File:  [LON-CAPA] / loncom / interface / domainprefs.pm
Revision 1.401: download - view: text, annotated - select for diffs
Thu Dec 30 02:39:01 2021 UTC (2 years, 10 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Bug 6914. Change needed in rev. 1.388

# The LearningOnline Network with CAPA
# Handler to set domain-wide configuration settings
#
# $Id: domainprefs.pm,v 1.401 2021/12/30 02:39:01 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
#
###############################################################
###############################################################

=pod

=head1 NAME

Apache::domainprefs.pm

=head1 SYNOPSIS

Handles configuration of a LON-CAPA domain.  

This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.


=head1 OVERVIEW

Each institution using LON-CAPA will typically have a single domain designated 
for use by individuals affiliated with the institution.  Accordingly, each domain
may define a default set of logos and a color scheme which can be used to "brand"
the LON-CAPA instance. In addition, an institution will typically have a language
and timezone which are used for the majority of courses.

LON-CAPA provides a mechanism to display and modify these defaults, as well as a 
host of other domain-wide settings which determine the types of functionality
available to users and courses in the domain.

There is also a mechanism to configure cataloging of courses in the domain, and
controls on the operation of automated processes which govern such things as
roster updates, user directory updates and processing of course requests.

The domain coordination manual which is built dynamically on install/update of 
LON-CAPA from the relevant help items provides more information about domain 
configuration.

Most of the domain settings are stored in the configuration.db GDBM file which is
housed on the primary library server for the domain in /home/httpd/lonUsers/$dom,
where $dom is the domain.  The configuration.db stores settings in a number of 
frozen hashes of hashes.  In a few cases, domain information must be uploaded to
the domain as files (e.g., image files for logos etc., or plain text files for
bubblesheet formats).  In this case the domainprefs.pm must be running in a user
session hosted on the primary library server in the domain, as these files are 
stored in author space belonging to a special $dom-domainconfig user.   

domainprefs.pm in combination with lonconfigsettings.pm will retrieve and display
the current settings, and provides an interface to make modifications.

=head1 SUBROUTINES

=over

=item print_quotas()

Inputs: 4 

$dom,$settings,$rowtotal,$action.

$dom is the domain, $settings is a reference to a hash of current settings for
the current context, $rowtotal is a reference to the scalar used to record the 
number of rows displayed on the page, and $action is the context (quotas, 
requestcourses or requestauthor).

The print_quotas routine was orginally created to display/store information
about default quota sizes for portfolio spaces for the different types of 
institutional affiliation in the domain (e.g., Faculty, Staff, Student etc.), 
but is now also used to manage availability of user tools: 
i.e., blogs, aboutme page, and portfolios, and the course request tool,
used by course owners to request creation of a course, and to display/store
default quota sizes for Authoring Spaces.

Outputs: 1

$datatable  - HTML containing form elements which allow settings to be changed. 

In the case of course requests, radio buttons are displayed for each institutional
affiliate type (and also default, and _LC_adv) for each of the course types 
(official, unofficial, community, textbook, placement, and lti).  
In each case the radio buttons allow the selection of one of four values:  

0, approval, validate, autolimit=N (where N is blank, or a positive integer).
which have the following effects:

0

=over

- course requests are not allowed for this course types/affiliation

=back

approval 

=over 

- course requests must be approved by a Doman Coordinator in the 
course's domain

=back

validate 

=over

- an institutional validation (e.g., check requestor is instructor
of record) needs to be passed before the course will be created.  The required
validation is in localenroll.pm on the primary library server for the course 
domain.

=back

autolimit 

=over
 
- course requests will be processed automatically up to a limit of
N requests for the course type for the particular requestor.
If N is undefined, there is no limit to the number of course requests
which a course owner may submit and have processed automatically. 

=back

=item modify_quotas() 

=back

=cut

package Apache::domainprefs;

use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet;
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::lonlocal;
use Apache::lonmsg();
use Apache::lonconfigsettings;
use Apache::lonuserutils();
use Apache::loncoursequeueadmin();
use LONCAPA qw(:DEFAULT :match);
use LONCAPA::Enrollment;
use LONCAPA::lonauthcgi();
use LONCAPA::SSL;
use File::Copy;
use Locale::Language;
use DateTime::TimeZone;
use DateTime::Locale;
use Time::HiRes qw( sleep );
use Net::CIDR;

my $registered_cleanup;
my $modified_urls;

sub handler {
    my $r=shift;
    if ($r->header_only) {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
        return OK;
    }

    my $context = 'domain';
    my $dom = $env{'request.role.domain'};
    my $domdesc = &Apache::lonnet::domain($dom,'description');
    if (&Apache::lonnet::allowed('mau',$dom)) {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
    } else {
        $env{'user.error.msg'}=
        "/adm/domainprefs:mau:0:0:Cannot modify domain settings";
        return HTTP_NOT_ACCEPTABLE;
    }

    $registered_cleanup=0;
    @{$modified_urls}=();

    &Apache::lonhtmlcommon::clear_breadcrumbs();
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                            ['phase','actions']);
    my $phase = 'pickactions';
    if ( exists($env{'form.phase'}) ) {
        $phase = $env{'form.phase'};
    }
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my %domconfig =
      &Apache::lonnet::get_dom('configuration',['login','rolecolors',
                'quotas','autoenroll','autoupdate','autocreate',
                'directorysrch','usercreation','usermodification',
                'contacts','defaults','scantron','coursecategories',
                'serverstatuses','requestcourses','helpsettings',
                'coursedefaults','usersessions','loadbalancing',
                'requestauthor','selfenrollment','inststatus',
                'ltitools','ssl','trust','lti','privacy','passwords',
                'proctoring','wafproxy','ipaccess'],$dom);
    my %encconfig =
        &Apache::lonnet::get_dom('encconfig',['ltitools','lti','proctoring'],$dom,undef,1);
    if (ref($domconfig{'ltitools'}) eq 'HASH') {
        if (ref($encconfig{'ltitools'}) eq 'HASH') {
            foreach my $id (keys(%{$domconfig{'ltitools'}})) {
                if ((ref($domconfig{'ltitools'}{$id}) eq 'HASH') &&
                    (ref($encconfig{'ltitools'}{$id}) eq 'HASH')) {
                    foreach my $item ('key','secret') {
                        $domconfig{'ltitools'}{$id}{$item} = $encconfig{'ltitools'}{$id}{$item};
                    }
                }
            }
        }
    }
    if (ref($domconfig{'lti'}) eq 'HASH') {
        if (ref($encconfig{'lti'}) eq 'HASH') {
            foreach my $id (keys(%{$domconfig{'lti'}})) {
                if ((ref($domconfig{'lti'}{$id}) eq 'HASH') &&
                    (ref($encconfig{'lti'}{$id}) eq 'HASH')) {
                    foreach my $item ('key','secret') {
                        $domconfig{'lti'}{$id}{$item} = $encconfig{'lti'}{$id}{$item};
                    }
                }
            }
        }
    }
    if (ref($domconfig{'proctoring'}) eq 'HASH') {
        if (ref($encconfig{'proctoring'}) eq 'HASH') {
            foreach my $provider (keys(%{$domconfig{'proctoring'}})) {
                if ((ref($domconfig{'proctoring'}{$provider}) eq 'HASH') &&
                    (ref($encconfig{'proctoring'}{$provider}) eq 'HASH')) {
                    foreach my $item ('key','secret') {
                        $domconfig{'proctoring'}{$provider}{$item} = $encconfig{'proctoring'}{$provider}{$item};
                    }
                }
            }
        }
    }
    my @prefs_order = ('rolecolors','login','ipaccess','defaults','wafproxy','passwords',
                       'quotas','autoenroll','autoupdate','autocreate','directorysrch',
                       'contacts','privacy','usercreation','selfcreation',
                       'usermodification','scantron','requestcourses','requestauthor',
                       'coursecategories','serverstatuses','helpsettings','coursedefaults',
                       'ltitools','proctoring','selfenrollment','usersessions','ssl',
                       'trust','lti');
    my %existing;
    if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
        %existing = %{$domconfig{'loadbalancing'}};
    }
    if ((keys(%servers) > 1) || (keys(%existing) > 0)) {
        push(@prefs_order,'loadbalancing');
    }
    my %prefs = (
        'rolecolors' =>
                   { text => 'Default color schemes',
                     help => 'Domain_Configuration_Color_Schemes',
                     header => [{col1 => 'Student Settings',
                                 col2 => '',},
                                {col1 => 'Coordinator Settings',
                                 col2 => '',},
                                {col1 => 'Author Settings',
                                 col2 => '',},
                                {col1 => 'Administrator Settings',
                                 col2 => '',}],
                      print => \&print_rolecolors,
                      modify => \&modify_rolecolors,
                    },
        'login' =>
                    { text => 'Log-in page options',
                      help => 'Domain_Configuration_Login_Page',
                      header => [{col1 => 'Log-in Page Items',
                                  col2 => '',},
                                 {col1 => 'Log-in Help',
                                  col2 => 'Value'},
                                 {col1 => 'Custom HTML in document head',
                                  col2 => 'Value'},
                                 {col1 => 'SSO',
                                  col2 => 'Dual login: SSO and non-SSO options'},
                                ],
                      print => \&print_login,
                      modify => \&modify_login,
                    },
        'defaults' => 
                    { text => 'Default authentication/language/timezone/portal/types',
                      help => 'Domain_Configuration_LangTZAuth',
                      header => [{col1 => 'Setting',
                                  col2 => 'Value'},
                                 {col1 => 'Institutional user types',
                                  col2 => 'Name displayed'}],
                      print => \&print_defaults,
                      modify => \&modify_defaults,
                    },
        'wafproxy' =>
                    { text => 'Web Application Firewall/Reverse Proxy',
                      help => 'Domain_Configuration_WAF_Proxy',
                      header => [{col1 => 'Domain(s)',
                                  col2 => 'Servers and WAF/Reverse Proxy alias(es)',
                                 },
                                 {col1 => 'Domain(s)',
                                  col2 => 'WAF Configuration',}],
                      print => \&print_wafproxy,
                      modify => \&modify_wafproxy,
                    },
        'passwords' =>
                    { text => 'Passwords (Internal authentication)',
                      help => 'Domain_Configuration_Passwords',
                      header => [{col1 => 'Resetting Forgotten Password',
                                  col2 => 'Settings'},
                                 {col1 => 'Encryption of Stored Passwords (Internal Auth)',
                                  col2 => 'Settings'},
                                 {col1 => 'Rules for LON-CAPA Passwords',
                                  col2 => 'Settings'},
                                 {col1 => 'Course Owner Changing Student Passwords',
                                  col2 => 'Settings'}],
                      print => \&print_passwords,
                      modify => \&modify_passwords,
                    },
        'quotas' => 
                    { text => 'Blogs, personal web pages, webDAV/quotas, portfolios',
                      help => 'Domain_Configuration_Quotas',
                      header => [{col1 => 'User affiliation',
                                  col2 => 'Available tools',
                                  col3 => 'Quotas, MB; (Authoring requires role)',}],
                      print => \&print_quotas,
                      modify => \&modify_quotas,
                    },
        'autoenroll' =>
                   { text => 'Auto-enrollment settings',
                     help => 'Domain_Configuration_Auto_Enrollment',
                     header => [{col1 => 'Configuration setting',
                                 col2 => 'Value(s)'}],
                     print => \&print_autoenroll,
                     modify => \&modify_autoenroll,
                   },
        'autoupdate' => 
                   { text => 'Auto-update settings',
                     help => 'Domain_Configuration_Auto_Updates',
                     header => [{col1 => 'Setting',
                                 col2 => 'Value',},
                                {col1 => 'Setting',
                                 col2 => 'Affiliation'},
                                {col1 => 'User population',
                                 col2 => 'Updatable user data'}],
                     print => \&print_autoupdate,
                     modify => \&modify_autoupdate,
                  },
        'autocreate' => 
                  { text => 'Auto-course creation settings',
                     help => 'Domain_Configuration_Auto_Creation',
                     header => [{col1 => 'Configuration Setting',
                                 col2 => 'Value',}],
                     print => \&print_autocreate,
                     modify => \&modify_autocreate,
                  },
        'directorysrch' => 
                  { text => 'Directory searches',
                    help => 'Domain_Configuration_InstDirectory_Search',
                    header => [{col1 => 'Institutional Directory Setting',
                                col2 => 'Value',},
                               {col1 => 'LON-CAPA Directory Setting',
                                col2 => 'Value',}],
                    print => \&print_directorysrch,
                    modify => \&modify_directorysrch,
                  },
        'contacts' =>
                  { text => 'E-mail addresses and helpform',
                    help => 'Domain_Configuration_Contact_Info',
                    header => [{col1 => 'Default e-mail addresses',
                                col2 => 'Value',},
                               {col1 => 'Recipient(s) for notifications',
                                col2 => 'Value',},
                               {col1 => 'Nightly status check e-mail',
                                col2 => 'Settings',},
                               {col1 => 'Ask helpdesk form settings',
                                col2 => 'Value',},],
                    print => \&print_contacts,
                    modify => \&modify_contacts,
                  },
        'usercreation' => 
                  { text => 'User creation',
                    help => 'Domain_Configuration_User_Creation',
                    header => [{col1 => 'Format rule type',
                                col2 => 'Format rules in force'},
                               {col1 => 'User account creation',
                                col2 => 'Usernames which may be created',},
                               {col1 => 'Context',
                                col2 => 'Assignable authentication types'}],
                    print => \&print_usercreation,
                    modify => \&modify_usercreation,
                  },
        'selfcreation' => 
                  { text => 'Users self-creating accounts',
                    help => 'Domain_Configuration_Self_Creation', 
                    header => [{col1 => 'Self-creation with institutional username',
                                col2 => 'Enabled?'},
                               {col1 => 'Institutional user type (login/SSO self-creation)',
                                col2 => 'Information user can enter'},
                               {col1 => 'Self-creation with e-mail verification',
                                col2 => 'Settings'}],
                    print => \&print_selfcreation,
                    modify => \&modify_selfcreation,
                  },
        'usermodification' =>
                  { text => 'User modification',
                    help => 'Domain_Configuration_User_Modification',
                    header => [{col1 => 'Target user has role',
                                col2 => 'User information updatable in author context'},
                               {col1 => 'Target user has role',
                                col2 => 'User information updatable in course context'}],
                    print => \&print_usermodification,
                    modify => \&modify_usermodification,
                  },
        'scantron' =>
                  { text => 'Bubblesheet format',
                    help => 'Domain_Configuration_Scantron_Format',
                    header => [ {col1 => 'Bubblesheet format file',
                                 col2 => ''},
                                {col1 => 'Bubblesheet data upload formats',
                                 col2 => 'Settings'}],
                    print => \&print_scantron,
                    modify => \&modify_scantron,
                  },
        'requestcourses' => 
                 {text => 'Request creation of courses',
                  help => 'Domain_Configuration_Request_Courses',
                  header => [{col1 => 'User affiliation',
                              col2 => 'Availability/Processing of requests',},
                             {col1 => 'Setting',
                              col2 => 'Value'},
                             {col1 => 'Available textbooks',
                              col2 => ''},
                             {col1 => 'Available templates',
                              col2 => ''},
                             {col1 => 'Validation (not official courses)',
                              col2 => 'Value'},],
                  print => \&print_quotas,
                  modify => \&modify_quotas,
                 },
        'requestauthor' =>
                 {text => 'Request Authoring Space',
                  help => 'Domain_Configuration_Request_Author',
                  header => [{col1 => 'User affiliation',
                              col2 => 'Availability/Processing of requests',},
                             {col1 => 'Setting',
                              col2 => 'Value'}],
                  print => \&print_quotas,
                  modify => \&modify_quotas,
                 },
        'coursecategories' =>
                  { text => 'Cataloging of courses/communities',
                    help => 'Domain_Configuration_Cataloging_Courses',
                    header => [{col1 => 'Catalog type/availability',
                                col2 => '',},
                               {col1 => 'Category settings for standard catalog',
                                col2 => '',},
                               {col1 => 'Categories',
                                col2 => '',
                               }],
                    print => \&print_coursecategories,
                    modify => \&modify_coursecategories,
                  },
        'serverstatuses' =>
                 {text   => 'Access to server status pages',
                  help   => 'Domain_Configuration_Server_Status',
                  header => [{col1 => 'Status Page',
                              col2 => 'Other named users',
                              col3 => 'Specific IPs',
                            }],
                  print => \&print_serverstatuses,
                  modify => \&modify_serverstatuses,
                 },
        'helpsettings' =>
                 {text   => 'Support settings',
                  help   => 'Domain_Configuration_Help_Settings',
                  header => [{col1 => 'Help Page Settings (logged-in users)',
                              col2 => 'Value'},
                             {col1 => 'Helpdesk Roles',
                              col2 => 'Settings'},],
                  print  => \&print_helpsettings,
                  modify => \&modify_helpsettings,
                 },
        'coursedefaults' => 
                 {text => 'Course/Community defaults',
                  help => 'Domain_Configuration_Course_Defaults',
                  header => [{col1 => 'Defaults which can be overridden in each course by a CC',
                              col2 => 'Value',},
                             {col1 => 'Defaults which can be overridden for each course by a DC',
                              col2 => 'Value',},],
                  print => \&print_coursedefaults,
                  modify => \&modify_coursedefaults,
                 },
        'selfenrollment' => 
                 {text   => 'Self-enrollment in Course/Community',
                  help   => 'Domain_Configuration_Selfenrollment',
                  header => [{col1 => 'Configuration Rights',
                              col2 => 'Configured by Course Personnel or Domain Coordinator?'},
                             {col1 => 'Defaults',
                              col2 => 'Value'},
                             {col1 => 'Self-enrollment validation (optional)',
                              col2 => 'Value'},],
                  print => \&print_selfenrollment,
                  modify => \&modify_selfenrollment,
                 },
        'privacy' => 
                 {text   => 'Availability of User Information',
                  help   => 'Domain_Configuration_User_Privacy',
                  header => [{col1 => 'Role assigned in different domain',
                              col2 => 'Approval options'},
                             {col1 => 'Role assigned in different domain to user of type',
                              col2 => 'User information available in that domain'},
                             {col1 => "Role assigned in user's domain",
                              col2 => 'Information viewable by privileged user'},
                             {col1 => "Role assigned in user's domain",
                              col2 => 'Information viewable by unprivileged user'}],
                  print => \&print_privacy,
                  modify => \&modify_privacy,
                 },
        'usersessions' =>
                 {text  => 'User session hosting/offloading',
                  help  => 'Domain_Configuration_User_Sessions',
                  header => [{col1 => 'Domain server',
                              col2 => 'Servers to offload sessions to when busy'},
                             {col1 => 'Hosting of users from other domains',
                              col2 => 'Rules'},
                             {col1 => "Hosting domain's own users elsewhere",
                              col2 => 'Rules'}],
                  print => \&print_usersessions,
                  modify => \&modify_usersessions,
                 },
        'loadbalancing' =>
                 {text  => 'Dedicated Load Balancer(s)',
                  help  => 'Domain_Configuration_Load_Balancing',
                  header => [{col1 => 'Balancers',
                              col2 => 'Default destinations',
                              col3 => 'User affiliation',
                              col4 => 'Overrides'},
                            ],
                  print => \&print_loadbalancing,
                  modify => \&modify_loadbalancing,
                 },
        'ltitools' => 
                 {text => 'External Tools (LTI)',
                  help => 'Domain_Configuration_LTI_Tools',
                  header => [{col1 => 'Setting',
                              col2 => 'Value',}],
                  print => \&print_ltitools,
                  modify => \&modify_ltitools,
                 },
        'proctoring' =>
                 {text => 'Remote Proctoring Integration',
                  help => 'Domain_Configuration_Proctoring',
                  header => [{col1 => 'Name',
                              col2 => 'Configuration'}],
                  print => \&print_proctoring,
                  modify => \&modify_proctoring,
                 },
        'ssl' =>
                 {text  => 'LON-CAPA Network (SSL)',
                  help  => 'Domain_Configuration_Network_SSL',
                  header => [{col1 => 'Server',
                              col2 => 'Certificate Status'},
                             {col1 => 'Connections to other servers',
                              col2 => 'Rules'},
                             {col1 => 'Connections from other servers',
                              col2 => 'Rules'},
                             {col1 => "Replicating domain's published content",
                              col2 => 'Rules'}],
                  print => \&print_ssl,
                  modify => \&modify_ssl,
                 },
        'trust' =>
                 {text   => 'Trust Settings',
                  help   => 'Domain_Configuration_Trust',
                  header => [{col1 => "Access to this domain's content by others",
                              col2 => 'Rules'},
                             {col1 => "Access to other domain's content by this domain",
                              col2 => 'Rules'},
                             {col1 => "Enrollment in this domain's courses by others",
                              col2 => 'Rules',},
                             {col1 => "Co-author roles in this domain for others",
                              col2 => 'Rules',},
                             {col1 => "Co-author roles for this domain's users elsewhere",
                              col2 => 'Rules',},
                             {col1 => "Domain roles in this domain assignable to others",
                              col2 => 'Rules'},
                             {col1 => "Course catalog for this domain displayed elsewhere",
                              col2 => 'Rules'},
                             {col1 => "Requests for creation of courses in this domain by others",
                              col2 => 'Rules'},
                             {col1 => "Users in other domains can send messages to this domain",
                              col2 => 'Rules'},],
                  print => \&print_trust,
                  modify => \&modify_trust,
                 },
          'lti' =>
                 {text => 'LTI Provider',
                  help => 'Domain_Configuration_LTI_Provider',
                  header => [{col1 => 'Setting',
                              col2 => 'Value',}],
                  print => \&print_lti,
                  modify => \&modify_lti,
                 },
           'ipaccess' =>
                       {text => 'IP-based access control',
                        help => 'Domain_Configuration_IP_Access',
                        header => [{col1 => 'Setting',
                                    col2 => 'Value'},],
                        print  => \&print_ipaccess,
                        modify => \&modify_ipaccess,
                       },
    );
    if (keys(%servers) > 1) {
        $prefs{'login'}  = { text   => 'Log-in page options',
                             help   => 'Domain_Configuration_Login_Page',
                            header => [{col1 => 'Log-in Service',
                                        col2 => 'Server Setting',},
                                       {col1 => 'Log-in Page Items',
                                        col2 => ''},
                                       {col1 => 'Log-in Help',
                                        col2 => 'Value'},
                                       {col1 => 'Custom HTML in document head',
                                        col2 => 'Value'},
                                       {col1 => 'SSO',
                                        col2 => 'Dual login: SSO and non-SSO options'},
                                      ],
                            print => \&print_login,
                            modify => \&modify_login,
                           };
    }

    my @roles = ('student','coordinator','author','admin');
    my @actions = &Apache::loncommon::get_env_multiple('form.actions');
    &Apache::lonhtmlcommon::add_breadcrumb
    ({href=>"javascript:changePage(document.$phase,'pickactions')",
      text=>"Settings to display/modify"});
    my $confname = $dom.'-domainconfig';

    if ($phase eq 'process') {
        my $result = &Apache::lonconfigsettings::make_changes($r,$dom,$phase,$context,\@prefs_order,
                                                              \%prefs,\%domconfig,$confname,\@roles);
        if ((ref($result) eq 'HASH') && (keys(%{$result}))) {
            $r->rflush();
            &devalidate_remote_domconfs($dom,$result);
        }
    } elsif ($phase eq 'display') {
        my $js = &recaptcha_js().
                 &toggle_display_js();
        if ((keys(%servers) > 1) || (keys(%existing) > 0)) {
            my ($othertitle,$usertypes,$types) =
                &Apache::loncommon::sorted_inst_types($dom);
            $js .= &lonbalance_targets_js($dom,$types,\%servers,
                                          $domconfig{'loadbalancing'}).
                   &new_spares_js().
                   &common_domprefs_js().
                   &Apache::loncommon::javascript_array_indexof();
        }
        if (grep(/^requestcourses$/,@actions)) {
            my $javascript_validations;
            my $coursebrowserjs=&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}); 
            $js .= <<END;
<script type="text/javascript">
$javascript_validations
</script>
$coursebrowserjs
END
        } elsif (grep(/^ipaccess$/,@actions)) {
            $js .= &Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'});
        }
        if (grep(/^selfcreation$/,@actions)) {
            $js .= &selfcreate_javascript();
        }
        if (grep(/^contacts$/,@actions)) {
            $js .= &contacts_javascript();
        }
        if (grep(/^scantron$/,@actions)) {
            $js .= &scantron_javascript();
        }
        &Apache::lonconfigsettings::display_settings($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,$js);
    } else {
# check if domconfig user exists for the domain.
        my $servadm = $r->dir_config('lonAdmEMail');
        my ($configuserok,$author_ok,$switchserver) =
            &config_check($dom,$confname,$servadm);
        unless ($configuserok eq 'ok') {
            &Apache::lonconfigsettings::print_header($r,$phase,$context);
            $r->print(&mt('The domain configuration user "[_1]" has yet to be created.',
                          $confname).
                      '<br />'
            );
            if ($switchserver) {
                $r->print(&mt('Ordinarily, that domain configuration user is created when the ./UPDATE script is run to install LON-CAPA for the first time.').
                          '<br />'.
                          &mt('However, that does not apply when new domains are added to a multi-domain server, and ./UPDATE has not been run recently.').
                          '<br />'.
                          &mt('The "[_1]" user can be created automatically when a Domain Coordinator visits the web-based "Set domain configuration" screen, in a session hosted on the primary library server.',$confname).
                          '<br />'.
                          &mt('To do that now, use the following link: [_1]',$switchserver)
                );
            } else {
                $r->print(&mt('To create that user from the command line run the ./UPDATE script found in the top level directory of the extracted LON-CAPA tarball.').
                          '<br />'.
                          &mt('Once that is done, you will be able to use the web-based "Set domain configuration" to configure the domain')
                );
            }
            $r->print(&Apache::loncommon::end_page());
            return OK;
        }
        if (keys(%domconfig) == 0) {
            my $primarylibserv = &Apache::lonnet::domain($dom,'primary');
            my @ids=&Apache::lonnet::current_machine_ids();
            if (!grep(/^\Q$primarylibserv\E$/,@ids)) {
                my %designhash = &Apache::loncommon::get_domainconf($dom);
                my @loginimages = ('img','logo','domlogo','login');
                my $custom_img_count = 0;
                foreach my $img (@loginimages) {
                    if ($designhash{$dom.'.login.'.$img} ne '') {
                        $custom_img_count ++;
                    }
                }
                foreach my $role (@roles) {
                    if ($designhash{$dom.'.'.$role.'.img'} ne '') {
                        $custom_img_count ++;
                    }
                }
                if ($custom_img_count > 0) {
                    &Apache::lonconfigsettings::print_header($r,$phase,$context);
                    my $switch_server = &check_switchserver($dom,$confname);
                    $r->print(
    &mt('Domain configuration settings have yet to be saved for this domain via the web-based domain preferences interface.').'<br />'.
    &mt("While this remains so, you must switch to the domain's primary library server in order to update settings.").'<br /><br />'.
    &mt("Thereafter, (with a Domain Coordinator role selected in the domain) you will be able to update settings when logged in to any server in the LON-CAPA network.").'<br />'.
    &mt("However, you will still need to switch to the domain's primary library server to upload new images or logos.").'<br /><br />');
                    if ($switch_server) {
                        $r->print($switch_server.' '.&mt('to primary library server for domain: [_1]',$dom));
                    }
                    $r->print(&Apache::loncommon::end_page());
                    return OK;
                }
            }
        }
        &Apache::lonconfigsettings::display_choices($r,$phase,$context,\@prefs_order,\%prefs);
    }
    return OK;
}

sub process_changes {
    my ($r,$dom,$confname,$action,$roles,$values,$lastactref) = @_;
    my %domconfig;
    if (ref($values) eq 'HASH') {
        %domconfig = %{$values};
    }
    my $output;
    if ($action eq 'login') {
        $output = &modify_login($r,$dom,$confname,$lastactref,%domconfig);
    } elsif ($action eq 'rolecolors') {
        $output = &modify_rolecolors($r,$dom,$confname,$roles,
                                     $lastactref,%domconfig);
    } elsif ($action eq 'quotas') {
        $output = &modify_quotas($r,$dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'autoenroll') {
        $output = &modify_autoenroll($dom,$lastactref,%domconfig);
    } elsif ($action eq 'autoupdate') {
        $output = &modify_autoupdate($dom,%domconfig);
    } elsif ($action eq 'autocreate') {
        $output = &modify_autocreate($dom,%domconfig);
    } elsif ($action eq 'directorysrch') {
        $output = &modify_directorysrch($dom,$lastactref,%domconfig);
    } elsif ($action eq 'usercreation') {
        $output = &modify_usercreation($dom,%domconfig);
    } elsif ($action eq 'selfcreation') {
        $output = &modify_selfcreation($dom,$lastactref,%domconfig);
    } elsif ($action eq 'usermodification') {
        $output = &modify_usermodification($dom,%domconfig);
    } elsif ($action eq 'contacts') {
        $output = &modify_contacts($dom,$lastactref,%domconfig);
    } elsif ($action eq 'defaults') {
        $output = &modify_defaults($dom,$lastactref,%domconfig);
    } elsif ($action eq 'scantron') {
        $output = &modify_scantron($r,$dom,$confname,$lastactref,%domconfig);
    } elsif ($action eq 'coursecategories') {
        $output = &modify_coursecategories($dom,$lastactref,%domconfig);
    } elsif ($action eq 'serverstatuses') {
        $output = &modify_serverstatuses($dom,%domconfig);
    } elsif ($action eq 'requestcourses') {
        $output = &modify_quotas($r,$dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'requestauthor') {
        $output = &modify_quotas($r,$dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'helpsettings') {
        $output = &modify_helpsettings($r,$dom,$confname,$lastactref,%domconfig);
    } elsif ($action eq 'coursedefaults') {
        $output = &modify_coursedefaults($dom,$lastactref,%domconfig);
    } elsif ($action eq 'selfenrollment') {
        $output = &modify_selfenrollment($dom,$lastactref,%domconfig)
    } elsif ($action eq 'usersessions') {
        $output = &modify_usersessions($dom,$lastactref,%domconfig);
    } elsif ($action eq 'loadbalancing') {
        $output = &modify_loadbalancing($dom,%domconfig);
    } elsif ($action eq 'ltitools') {
        $output = &modify_ltitools($r,$dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'proctoring') {
        $output = &modify_proctoring($r,$dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'ssl') {
        $output = &modify_ssl($dom,$lastactref,%domconfig);
    } elsif ($action eq 'trust') {
        $output = &modify_trust($dom,$lastactref,%domconfig);
    } elsif ($action eq 'lti') {
        $output = &modify_lti($r,$dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'privacy') {
        $output = &modify_privacy($dom,%domconfig);
    } elsif ($action eq 'passwords') {
        $output = &modify_passwords($r,$dom,$confname,$lastactref,%domconfig);
    } elsif ($action eq 'wafproxy') {
        $output = &modify_wafproxy($dom,$action,$lastactref,%domconfig);
    } elsif ($action eq 'ipaccess') {
        $output = &modify_ipaccess($dom,$lastactref,%domconfig);
    }
    return $output;
}

sub print_config_box {
    my ($r,$dom,$confname,$phase,$action,$item,$settings) = @_;
    my $rowtotal = 0;
    my $output;
    if ($action eq 'coursecategories') {
        $output = &coursecategories_javascript($settings);
    } elsif ($action eq 'defaults') {
        $output = &defaults_javascript($settings); 
    } elsif ($action eq 'passwords') {
        $output = &passwords_javascript();
    } elsif ($action eq 'helpsettings') {
        my (%privs,%levelscurrent);
        my %full=();
        my %levels=(
                     course => {},
                     domain => {},
                     system => {},
                   );
        my $context = 'domain';
        my $crstype = 'Course';
        my $formname = 'display';
        &Apache::lonuserutils::custom_role_privs(\%privs,\%full,\%levels,\%levelscurrent);
        my @templateroles = &Apache::lonuserutils::custom_template_roles($context,$crstype);
        $output =
            &Apache::lonuserutils::custom_roledefs_js($context,$crstype,$formname,\%full, 
                                                      \@templateroles);
    } elsif ($action eq 'ltitools') {
        $output .= &ltitools_javascript($settings);
    } elsif ($action eq 'lti') {
        $output .= &lti_javascript($settings);
    } elsif ($action eq 'proctoring') {
        $output .= &proctoring_javascript($settings);
    } elsif ($action eq 'wafproxy') {
        $output .= &wafproxy_javascript($dom);
    } elsif ($action eq 'autoupdate') {
        $output .= &autoupdate_javascript();
    } elsif ($action eq 'autoenroll') {
        $output .= &autoenroll_javascript();
    } elsif ($action eq 'login') {
        $output .= &saml_javascript();
    } elsif ($action eq 'ipaccess') {
        $output .= &ipaccess_javascript($settings);
    }
    $output .=
         '<table class="LC_nested_outer">
          <tr>
           <th class="LC_left_item LC_middle"><span class="LC_nobreak">'.
           &mt($item->{text}).'&nbsp;'.
           &Apache::loncommon::help_open_topic($item->{'help'}).'</span></th>'."\n".
          '</tr>';
    $rowtotal ++;
    my $numheaders = 1;
    if (ref($item->{'header'}) eq 'ARRAY') {
        $numheaders = scalar(@{$item->{'header'}});
    }
    if ($numheaders > 1) {
        my $colspan = '';
        my $rightcolspan = '';
        my $leftnobr = '';
        if (($action eq 'rolecolors') || ($action eq 'defaults') ||
            ($action eq 'directorysrch') ||
            (($action eq 'login') && ($numheaders < 5))) {
            $colspan = ' colspan="2"';
        }
        if ($action eq 'usersessions') {
            $rightcolspan = ' colspan="3"'; 
        }
        if ($action eq 'passwords') {
            $leftnobr = ' LC_nobreak';
        }
        $output .= '
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item'.$leftnobr.'"'.$colspan.'>'.&mt($item->{'header'}->[0]->{'col1'}).'</td>
              <td class="LC_right_item"'.$rightcolspan.'>'.&mt($item->{'header'}->[0]->{'col2'}).'</td>
             </tr>';
        $rowtotal ++;
        if (($action eq 'autoupdate') || ($action eq 'usercreation') || ($action eq 'selfcreation') ||
            ($action eq 'usermodification') || ($action eq 'defaults') || ($action eq 'coursedefaults') ||
            ($action eq 'selfenrollment') || ($action eq 'usersessions') || ($action eq 'ssl') ||
            ($action eq 'directorysrch') || ($action eq 'trust') || ($action eq 'helpsettings') ||
            ($action eq 'contacts') || ($action eq 'privacy') || ($action eq 'wafproxy')) {
            $output .= $item->{'print'}->('top',$dom,$settings,\$rowtotal);
        } elsif ($action eq 'passwords') {
            $output .= $item->{'print'}->('top',$dom,$confname,$settings,\$rowtotal);
        } elsif ($action eq 'coursecategories') {
            $output .= $item->{'print'}->('top',$dom,$item,$settings,\$rowtotal);
        } elsif ($action eq 'scantron') {
            $output .= $item->{'print'}->($r,'top',$dom,$confname,$settings,\$rowtotal);
        } elsif ($action eq 'login') {
            if ($numheaders == 5) {
                $colspan = ' colspan="2"';
                $output .= &print_login('service',$dom,$confname,$phase,$settings,\$rowtotal);
            } else {
                $output .= &print_login('page',$dom,$confname,$phase,$settings,\$rowtotal);
            }
        } elsif (($action eq 'requestcourses') || ($action eq 'requestauthor')) {
            $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
        } elsif ($action eq 'rolecolors') {
            $output .= &print_rolecolors($phase,'student',$dom,$confname,$settings,\$rowtotal);
        }
        $output .= '
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[1]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[1]->{'col2'}).'</td>
             </tr>';
            $rowtotal ++;
        if (($action eq 'autoupdate') || ($action eq 'usercreation') ||
            ($action eq 'selfcreation') || ($action eq 'selfenrollment') ||
            ($action eq 'usersessions') || ($action eq 'coursecategories') || 
            ($action eq 'trust') || ($action eq 'contacts') ||
            ($action eq 'privacy') || ($action eq 'passwords')) {
            if ($action eq 'coursecategories') {
                $output .= &print_coursecategories('middle',$dom,$item,$settings,\$rowtotal);
                $colspan = ' colspan="2"';
            } elsif ($action eq 'trust') {
                $output .= $item->{'print'}->('shared',$dom,$settings,\$rowtotal);
            } elsif ($action eq 'passwords') {
                $output .= $item->{'print'}->('middle',$dom,$confname,$settings,\$rowtotal);
            } else {
                $output .= $item->{'print'}->('middle',$dom,$settings,\$rowtotal);
            }
            if ($action eq 'trust') {
                $output .= '
            </table>
          </td>
         </tr>';
                my @trusthdrs = qw(2 3 4 5 6 7);
                my @prefixes = qw(enroll othcoau coaurem domroles catalog reqcrs);
                for (my $i=0; $i<@trusthdrs; $i++) {
                    $output .= '
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[$trusthdrs[$i]]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[$trusthdrs[$i]]->{'col2'}).'</td></tr>'.
                           $item->{'print'}->($prefixes[$i],$dom,$settings,\$rowtotal).'
            </table>
          </td>
         </tr>';
                }
                $output .= '
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[8]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[8]->{'col2'}).'</td></tr>'.
                           $item->{'print'}->('bottom',$dom,$settings,\$rowtotal);
            } else {
                $output .= '
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item">'.&mt($item->{'header'}->[2]->{'col2'}).'</td>
             </tr>'."\n";
                if ($action eq 'coursecategories') {
                    $output .= &print_coursecategories('bottom',$dom,$item,$settings,\$rowtotal);
                } elsif (($action eq 'contacts') || ($action eq 'privacy') || ($action eq 'passwords')) {
                    if ($action eq 'passwords') {
                        $output .= $item->{'print'}->('lower',$dom,$confname,$settings,\$rowtotal);
                    } else {
                        $output .= $item->{'print'}->('lower',$dom,$settings,\$rowtotal);
                    }
                    $output .= '
             </tr>
            </table>
           </td>
          </tr>
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item'.$leftnobr.'"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col2'}).'</td></tr>'."\n";
                    if ($action eq 'passwords') {
                        $output .= $item->{'print'}->('bottom',$dom,$confname,$settings,\$rowtotal);
                    } else {
                        $output .= $item->{'print'}->('bottom',$dom,$settings,\$rowtotal);
                    }
                    $output .= '
            </table>
          </td>
         </tr>
         <tr>';
                } else {
                    $output .= $item->{'print'}->('bottom',$dom,$settings,\$rowtotal);
                }
            }
            $rowtotal ++;
        } elsif (($action eq 'usermodification') || ($action eq 'coursedefaults') ||
                 ($action eq 'defaults') || ($action eq 'directorysrch') ||
                 ($action eq 'helpsettings') || ($action eq 'wafproxy')) {
            $output .= $item->{'print'}->('bottom',$dom,$settings,\$rowtotal);
        } elsif ($action eq 'scantron') {
            $output .= $item->{'print'}->($r,'bottom',$dom,$confname,$settings,\$rowtotal);
        } elsif ($action eq 'ssl') {
            $output .= $item->{'print'}->('connto',$dom,$settings,\$rowtotal).'
            </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col2'}).'</td></tr>'.
                           $item->{'print'}->('connfrom',$dom,$settings,\$rowtotal).'
            </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col2'}).'</td></tr>'.
                           $item->{'print'}->('bottom',$dom,$settings,\$rowtotal);
        } elsif ($action eq 'login') {
            if ($numheaders == 5) {
                $output .= &print_login('page',$dom,$confname,$phase,$settings,\$rowtotal).'
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col2'}).'</td></tr>'.
                       &print_login('help',$dom,$confname,$phase,$settings,\$rowtotal);
                $rowtotal ++;
            } else {
                $output .= &print_login('help',$dom,$confname,$phase,$settings,\$rowtotal);
            }
            $output .= '
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">';
            if ($numheaders == 5) {
                $output .= '
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col2'}).'</td>
             </tr>';
            } else {
                $output .= '
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col2'}).'</td>
             </tr>';
            }
            $rowtotal ++;
            $output .= &print_login('headtag',$dom,$confname,$phase,$settings,\$rowtotal).'
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">';
            if ($numheaders == 5) {
                $output .= '
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[4]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[4]->{'col2'}).'</td>
             </tr>';
            } else {
                $output .= '
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col1'}).'</td>
              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col2'}).'</td>
             </tr>';
            }
            $rowtotal ++;
            $output .= &print_login('saml',$dom,$confname,$phase,$settings,\$rowtotal);
        } elsif ($action eq 'requestcourses') {
            $output .= &print_requestmail($dom,$action,$settings,\$rowtotal);
            $rowtotal ++;
            $output .= &print_studentcode($settings,\$rowtotal).'
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item">'.&mt($item->{'header'}->[2]->{'col2'}).'</td> </tr>'.
                       &textbookcourses_javascript($settings).
                       &print_textbookcourses($dom,'textbooks',$settings,\$rowtotal).'
            </table>
           </td>
          </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col1'}).'</td>
              <td class="LC_right_item">'.&mt($item->{'header'}->[3]->{'col2'}).'</td> </tr>'.
                       &print_textbookcourses($dom,'templates',$settings,\$rowtotal).'
            </table>
           </td>
          </tr>
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.' style="vertical-align: top">'.&mt($item->{'header'}->[4]->{'col1'}).'</td>
              <td class="LC_right_item" style="vertical-align: top">'.&mt($item->{'header'}->[4]->{'col2'}).'</td>
             </tr>'.
            &print_validation_rows('requestcourses',$dom,$settings,\$rowtotal);
        } elsif ($action eq 'requestauthor') {
            $output .= &print_requestmail($dom,$action,$settings,\$rowtotal);
            $rowtotal ++;
        } elsif ($action eq 'rolecolors') {
            $output .= &print_rolecolors($phase,'coordinator',$dom,$confname,$settings,\$rowtotal).'
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.' style="vertical-align: top">'.
               &mt($item->{'header'}->[2]->{'col1'}).'</td>
              <td class="LC_right_item" style="vertical-align: top">'.
               &mt($item->{'header'}->[2]->{'col2'}).'</td>
             </tr>'.
            &print_rolecolors($phase,'author',$dom,$confname,$settings,\$rowtotal).'
           </table>
          </td>
         </tr>
         <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">
              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[3]->{'col1'}).'</td>
              <td class="LC_right_item">'.&mt($item->{'header'}->[3]->{'col2'}).'</td>
             </tr>'.
            &print_rolecolors($phase,'admin',$dom,$confname,$settings,\$rowtotal);
            $rowtotal += 2;
        }
    } else {
        $output .= '
          <tr>
           <td>
            <table class="LC_nested">
             <tr class="LC_info_row">';
        if ($action eq 'login') {
            $output .= '  
              <td class="LC_left_item" colspan="2">'.&mt($item->{'header'}->[0]->{'col1'}).'</td>';
        } elsif ($action eq 'serverstatuses') {
            $output .= '
              <td class="LC_left_item" style="vertical-align: top">'.&mt($item->{'header'}->[0]->{'col1'}).
              '<br />('.&mt('Automatic access for Dom. Coords.').')</td>';

        } else {
            $output .= '
              <td class="LC_left_item" style="vertical-align: top">'.&mt($item->{'header'}->[0]->{'col1'}).'</td>';
        }
        if (defined($item->{'header'}->[0]->{'col3'})) {
            $output .= '<td class="LC_left_item" style="vertical-align: top">'.
                       &mt($item->{'header'}->[0]->{'col2'});
            if ($action eq 'serverstatuses') {
                $output .= '<br />(<tt>'.&mt('user1:domain1,user2:domain2 etc.').'</tt>)';
            } 
        } else {
            $output .= '<td class="LC_right_item" style="vertical-align: top">'.
                       &mt($item->{'header'}->[0]->{'col2'});
        }
        $output .= '</td>';
        if ($item->{'header'}->[0]->{'col3'}) {
            if (defined($item->{'header'}->[0]->{'col4'})) {
                $output .= '<td class="LC_left_item" style="vertical-align: top">'.
                            &mt($item->{'header'}->[0]->{'col3'});
            } else {
                $output .= '<td class="LC_right_item" style="vertical-align: top">'.
                           &mt($item->{'header'}->[0]->{'col3'});
            }
            if ($action eq 'serverstatuses') {
                $output .= '<br />(<tt>'.&mt('IP1,IP2 etc.').'</tt>)';
            }
            $output .= '</td>';
        }
        if ($item->{'header'}->[0]->{'col4'}) {
            $output .= '<td class="LC_right_item" style="vertical-align: top">'.
                       &mt($item->{'header'}->[0]->{'col4'});
        }
        $output .= '</tr>';
        $rowtotal ++;
        if ($action eq 'quotas') {
            $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
        } elsif (($action eq 'autoenroll') || ($action eq 'autocreate') || 
                 ($action eq 'serverstatuses') || ($action eq 'loadbalancing') || 
                 ($action eq 'ltitools') || ($action eq 'lti') ||
                 ($action eq 'proctoring') || ($action eq 'ipaccess')) {
            $output .= $item->{'print'}->($dom,$settings,\$rowtotal);
        }
    }
    $output .= '
   </table>
  </td>
 </tr>
</table><br />';
    return ($output,$rowtotal);
}

sub print_login {
    my ($caller,$dom,$confname,$phase,$settings,$rowtotal) = @_;
    my ($css_class,$datatable,$switchserver,%lt);
    my %choices = &login_choices();
    if (($caller eq 'help') || ($caller eq 'headtag') || ($caller eq 'saml')) {
        %lt = &login_file_options();
        $switchserver = &check_switchserver($dom,$confname);
    }
    if ($caller eq 'service') {
        my %servers = &Apache::lonnet::internet_dom_servers($dom);
        my $choice = $choices{'disallowlogin'};
        $css_class = ' class="LC_odd_row"';
        $datatable .= '<tr'.$css_class.'><td>'.$choice.'</td>'.
                      '<td style="text-align: right"><table><tr><th>'.$choices{'hostid'}.'</th>'.
                      '<th>'.$choices{'server'}.'</th>'.
                      '<th>'.$choices{'serverpath'}.'</th>'.
                      '<th>'.$choices{'custompath'}.'</th>'.
                      '<th><span class="LC_nobreak">'.$choices{'exempt'}.'</span></th></tr>'."\n";
        my %disallowed;
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'loginvia'}) eq 'HASH') {
               %disallowed = %{$settings->{'loginvia'}};
            }
        }
        foreach my $lonhost (sort(keys(%servers))) {
            my $direct = 'selected="selected"';
            if (ref($disallowed{$lonhost}) eq 'HASH') {
                if ($disallowed{$lonhost}{'server'} ne '') {
                    $direct = '';
                }
            }
            $datatable .= '<tr><td>'.$servers{$lonhost}.'</td>'.
                          '<td><select name="'.$lonhost.'_server">'.
                          '<option value=""'.$direct.'>'.$choices{'directlogin'}.
                          '</option>';
            foreach my $hostid (sort(keys(%servers))) {
                next if ($servers{$hostid} eq $servers{$lonhost});
                my $selected = '';
                if (ref($disallowed{$lonhost}) eq 'HASH') {
                    if ($hostid eq $disallowed{$lonhost}{'server'}) {
                        $selected = 'selected="selected"';
                    }
                }
                $datatable .= '<option value="'.$hostid.'"'.$selected.'>'.
                              $servers{$hostid}.'</option>';
            }
            $datatable .= '</select></td>'.
                          '<td><select name="'.$lonhost.'_serverpath">';
            foreach my $path ('','/','/adm/login','/adm/roles','custom') {
                my $pathname = $path;
                if ($path eq 'custom') {
                    $pathname = &mt('Custom Path').' ->';
                }
                my $selected = '';
                if (ref($disallowed{$lonhost}) eq 'HASH') {
                    if ($path eq $disallowed{$lonhost}{'serverpath'}) {
                        $selected = 'selected="selected"';
                    }
                } elsif ($path eq '') {
                    $selected = 'selected="selected"';
                }
                $datatable .= '<option value="'.$path.'"'.$selected.'>'.$pathname.'</option>';
            }
            $datatable .= '</select></td>';
            my ($custom,$exempt);
            if (ref($disallowed{$lonhost}) eq 'HASH') {
                $custom = $disallowed{$lonhost}{'custompath'};
                $exempt = $disallowed{$lonhost}{'exempt'};
            }
            $datatable .= '<td><input type="text" name="'.$lonhost.'_custompath" size="6" value="'.$custom.'" /></td>'.
                          '<td><input type="text" name="'.$lonhost.'_exempt" size="8" value="'.$exempt.'" /></td>'.
                          '</tr>';
        }
        $datatable .= '</table></td></tr>';
        return $datatable;
    } elsif ($caller eq 'page') {
        my %defaultchecked = ( 
                               'coursecatalog' => 'on',
                               'helpdesk'      => 'on',
                               'adminmail'     => 'off',
                               'newuser'       => 'off',
                             );
        my @toggles = ('coursecatalog','adminmail','helpdesk','newuser');
        my (%checkedon,%checkedoff);
        foreach my $item (@toggles) {
            if ($defaultchecked{$item} eq 'on') { 
                $checkedon{$item} = ' checked="checked" ';
                $checkedoff{$item} = ' ';
            } elsif ($defaultchecked{$item} eq 'off') {
                $checkedoff{$item} = ' checked="checked" ';
                $checkedon{$item} = ' ';
            }
        }
        my @images = ('img','logo','domlogo','login');
        my @logintext = ('textcol','bgcol');
        my @bgs = ('pgbg','mainbg','sidebg');
        my @links = ('link','alink','vlink');
        my %designhash = &Apache::loncommon::get_domainconf($dom);
        my %defaultdesign = %Apache::loncommon::defaultdesign;
        my (%is_custom,%designs);
        my %defaults = (
                       font => $defaultdesign{'login.font'},
                       );
        foreach my $item (@images) {
            $defaults{$item} = $defaultdesign{'login.'.$item};
            $defaults{'showlogo'}{$item} = 1;
        }
        foreach my $item (@bgs) {
            $defaults{'bgs'}{$item} = $defaultdesign{'login.'.$item};
        }
        foreach my $item (@logintext) {
            $defaults{'logintext'}{$item} = $defaultdesign{'login.'.$item};
        }
        foreach my $item (@links) {
            $defaults{'links'}{$item} = $defaultdesign{'login.'.$item};
        }
        if (ref($settings) eq 'HASH') {
            foreach my $item (@toggles) {
                if ($settings->{$item} eq '1') {
                    $checkedon{$item} =  ' checked="checked" ';
                    $checkedoff{$item} = ' ';
                } elsif ($settings->{$item} eq '0') {
                    $checkedoff{$item} =  ' checked="checked" ';
                    $checkedon{$item} = ' ';
                }
            }
            foreach my $item (@images) {
                if (defined($settings->{$item})) {
                    $designs{$item} = $settings->{$item};
                    $is_custom{$item} = 1;
                }
                if (defined($settings->{'showlogo'}{$item})) {
                    $designs{'showlogo'}{$item} = $settings->{'showlogo'}{$item};
                }
            }
            foreach my $item (@logintext) {
                if ($settings->{$item} ne '') {
                    $designs{'logintext'}{$item} = $settings->{$item};
                    $is_custom{$item} = 1;
                }
            }
            if ($settings->{'font'} ne '') {
                $designs{'font'} = $settings->{'font'};
                $is_custom{'font'} = 1;
            }
            foreach my $item (@bgs) {
                if ($settings->{$item} ne '') {
                    $designs{'bgs'}{$item} = $settings->{$item};
                    $is_custom{$item} = 1;
                }
            }
            foreach my $item (@links) {
                if ($settings->{$item} ne '') {
                    $designs{'links'}{$item} = $settings->{$item};
                    $is_custom{$item} = 1;
                }
            }
        } else {
            if ($designhash{$dom.'.login.font'} ne '') {
                $designs{'font'} = $designhash{$dom.'.login.font'};
                $is_custom{'font'} = 1;
            }
            foreach my $item (@images) {
                if ($designhash{$dom.'.login.'.$item} ne '') {
                    $designs{$item} = $designhash{$dom.'.login.'.$item};
                    $is_custom{$item} = 1;
                }
            }
            foreach my $item (@bgs) {
                if ($designhash{$dom.'.login.'.$item} ne '') {
                    $designs{'bgs'}{$item} = $designhash{$dom.'.login.'.$item};
                    $is_custom{$item} = 1;
                }
            }
            foreach my $item (@links) {
                if ($designhash{$dom.'.login.'.$item} ne '') {
                    $designs{'links'}{$item} = $designhash{$dom.'.login.'.$item};
                    $is_custom{$item} = 1;
                }
            }
        }
        my %alt_text = &Apache::lonlocal::texthash  ( img => 'Log-in banner',
                                                      logo => 'Institution Logo',
                                                      domlogo => 'Domain Logo',
                                                      login => 'Login box');
        my $itemcount = 1;
        foreach my $item (@toggles) {
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            $datatable .=  
                '<tr'.$css_class.'><td colspan="2">'.$choices{$item}.
                '</td><td>'.
                '<span class="LC_nobreak"><label><input type="radio" name="'.
                $item.'"'.$checkedon{$item}.' value="1" />'.&mt('Yes').
                '</label>&nbsp;<label><input type="radio" name="'.$item.'"'.
                $checkedoff{$item}.' value="0" />'.&mt('No').'</label></span></td>'.
                '</tr>';
            $itemcount ++;
        }
        $datatable .= &display_color_options($dom,$confname,$phase,'login',$itemcount,\%choices,\%is_custom,\%defaults,\%designs,\@images,\@bgs,\@links,\%alt_text,$rowtotal,\@logintext);
        $datatable .= '</tr></table></td></tr>';
    } elsif ($caller eq 'help') {
        my ($defaulturl,$defaulttype,%url,%type,%langchoices);
        my $itemcount = 1;
        $defaulturl = '/adm/loginproblems.html';
        $defaulttype = 'default';
        %langchoices = &Apache::lonlocal::texthash(&get_languages_hash());
        my @currlangs;
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'helpurl'}) eq 'HASH') {
                foreach my $key (sort(keys(%{$settings->{'helpurl'}}))) {
                    next if ($settings->{'helpurl'}{$key} eq '');
                    $url{$key} = $settings->{'helpurl'}{$key}.'?inhibitmenu=yes';
                    $type{$key} = 'custom';
                    unless ($key eq 'nolang') {
                        push(@currlangs,$key);
                    }
                }
            } elsif ($settings->{'helpurl'} ne '') {
                $type{'nolang'} = 'custom';
                $url{'nolang'} = $settings->{'helpurl'}.'?inhibitmenu=yes';
            }
        }
        foreach my $lang ('nolang',sort(@currlangs)) {
            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
            $datatable .= '<tr'.$css_class.'>';
            if ($url{$lang} eq '') {
                $url{$lang} = $defaulturl;
            }
            if ($type{$lang} eq '') {
                $type{$lang} = $defaulttype;
            }
            $datatable .= '<td colspan="2"><span class="LC_nobreak">';
            if ($lang eq 'nolang') {
                $datatable .= &mt('Log-in help page if no specific language file: [_1]',
                                  &Apache::loncommon::modal_link($url{$lang},$lt{$type{$lang}},600,500));
            } else {
                $datatable .= &mt('Log-in help page for language: [_1] is [_2]',
                                  $langchoices{$lang},
                                  &Apache::loncommon::modal_link($url{$lang},$lt{$type{$lang}},600,500));
            }
            $datatable .= '</span></td>'."\n".
                          '<td class="LC_left_item">';
            if ($type{$lang} eq 'custom') {
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="loginhelpurl_del" value="'.$lang.'" />'.
                              $lt{'del'}.'</label>&nbsp;'.$lt{'rep'}.'</span>';
            } else {
                $datatable .= $lt{'upl'};
            }
            $datatable .='<br />';
            if ($switchserver) {
                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
            } else {
                $datatable .= '<input type="file" name="loginhelpurl_'.$lang.'" />';
            }
            $datatable .= '</td></tr>';
            $itemcount ++;
        }
        my @addlangs;
        foreach my $lang (sort(keys(%langchoices))) {
            next if ((grep(/^\Q$lang\E$/,@currlangs)) || ($lang eq 'x_chef'));
            push(@addlangs,$lang);
        }
        if (@addlangs > 0) {
            my %toadd;
            map { $toadd{$_} = $langchoices{$_} ; } @addlangs;
            $toadd{''} = &mt('Select');
            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
            $datatable .= '<tr'.$css_class.'><td class="LC_left_item" colspan="2">'.
                          &mt('Add log-in help page for a specific language:').'&nbsp;'.
                          &Apache::loncommon::select_form('','loginhelpurl_add_lang',\%toadd).
                          '</td><td class="LC_left_item">'.$lt{'upl'}.'<br />';
            if ($switchserver) {
                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
            } else {
                $datatable .= '<input type="file" name="loginhelpurl_add_file" />';
            }
            $datatable .= '</td></tr>';
            $itemcount ++;
        }
        $datatable .= &captcha_choice('login',$settings,$itemcount);
    } elsif ($caller eq 'headtag') {
        my %domservers = &Apache::lonnet::get_servers($dom);
        my $choice = $choices{'headtag'};
        $css_class = ' class="LC_odd_row"';
        $datatable .= '<tr'.$css_class.'><td colspan="2">'.$choice.'</td>'.
                      '<td style="text-align: left"><table><tr><th>'.$choices{'hostid'}.'</th>'.
                      '<th>'.$choices{'current'}.'</th>'.
                      '<th>'.$choices{'action'}.'</th>'.
                      '<th>'.$choices{'exempt'}.'</th></tr>'."\n";
        my (%currurls,%currexempt);
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'headtag'}) eq 'HASH') {
                foreach my $lonhost (keys(%{$settings->{'headtag'}})) {
                    if (ref($settings->{'headtag'}{$lonhost}) eq 'HASH') {
                        $currurls{$lonhost} = $settings->{'headtag'}{$lonhost}{'url'};
                        $currexempt{$lonhost} = $settings->{'headtag'}{$lonhost}{'exempt'};
                    }
                }
            }
        }
        foreach my $lonhost (sort(keys(%domservers))) {
            my $exempt = &check_exempt_addresses($currexempt{$lonhost});
            $datatable .= '<tr><td>'.$domservers{$lonhost}.'</td>';
            if ($currurls{$lonhost}) {
                $datatable .= '<td class="LC_right_item"><a href="'.
                              "javascript:void(open('$currurls{$lonhost}?inhibitmenu=yes','Custom_HeadTag',
                              'menubar=0,toolbar=1,scrollbars=1,width=600,height=500,resizable=yes'))".
                              '">'.$lt{'curr'}.'</a></td>'.
                              '<td><span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="loginheadtag_del" value="'.$lonhost.'" />'.
                              $lt{'del'}.'</label>&nbsp;'.$lt{'rep'}.'</span>';
            } else {
                $datatable .= '<td class="LC_right_item">'.$lt{'none'}.'</td><td>'.$lt{'upl'};
            }
            $datatable .='<br />';
            if ($switchserver) {
                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
            } else {
                $datatable .= '<input type="file" name="loginheadtag_'.$lonhost.'" />';
            }
            $datatable .= '</td><td><input type="text" name="loginheadtagexempt_'.$lonhost.'" value="'.$exempt.'" /></td></tr>';
        }
        $datatable .= '</table></td></tr>';
    } elsif ($caller eq 'saml') {
        my %domservers = &Apache::lonnet::get_servers($dom);
        $datatable .= '<tr><td colspan="3" style="text-align: left">'.
                      '<table><tr><th>'.$choices{'hostid'}.'</th>'.
                      '<th>'.$choices{'samllanding'}.'</th>'.
                      '<th>'.$choices{'samloptions'}.'</th></tr>'."\n";
        my (%saml,%samltext,%samlimg,%samlalt,%samlurl,%samltitle,%samlnotsso,%styleon,%styleoff);
        foreach my $lonhost (keys(%domservers)) {
            $samlurl{$lonhost} = '/adm/sso';
            $styleon{$lonhost} = 'display:none';
            $styleoff{$lonhost} = '';
        }
        if (ref($settings->{'saml'}) eq 'HASH') {
            foreach my $lonhost (keys(%{$settings->{'saml'}})) {
                if (ref($settings->{'saml'}{$lonhost}) eq 'HASH') {
                    $saml{$lonhost} = 1;
                    $samltext{$lonhost} = $settings->{'saml'}{$lonhost}{'text'};
                    $samlimg{$lonhost} = $settings->{'saml'}{$lonhost}{'img'};
                    $samlalt{$lonhost} = $settings->{'saml'}{$lonhost}{'alt'};
                    $samlurl{$lonhost} = $settings->{'saml'}{$lonhost}{'url'};
                    $samltitle{$lonhost} = $settings->{'saml'}{$lonhost}{'title'};
                    $samlnotsso{$lonhost} = $settings->{'saml'}{$lonhost}{'notsso'};
                    $styleon{$lonhost} = '';
                    $styleoff{$lonhost} = 'display:none';
                } else {
                    $styleon{$lonhost} = 'display:none';
                    $styleoff{$lonhost} = '';
                }
            }
        }
        my $itemcount = 1;
        foreach my $lonhost (sort(keys(%domservers))) {
            my $samlon = ' ';
            my $samloff = ' checked="checked" ';
            if ($saml{$lonhost}) {
                $samlon = $samloff;
                $samloff = ' ';
            }
            my $css_class = $itemcount%2?' class="LC_odd_row"':'';
            $datatable .= '<tr'.$css_class.'><td><span class="LC_nobreak">'.$domservers{$lonhost}.'</span></td>'.
                          '<td><span class="LC_nobreak"><label><input type="radio" name="saml_'.$lonhost.'"'.$samloff.
                          'onclick="toggleSamlOptions(this.form,'."'$lonhost'".');" value="0" />'.
                          &mt('No').'</label>'.('&nbsp;'x2).
                          '<label><input type="radio" name="saml_'.$lonhost.'"'.$samlon.
                          'onclick="toggleSamlOptions(this.form,'."'$lonhost'".');" value="1" />'.
                          &mt('Yes').'</label></span></td>'.
                          '<td id="samloptionson_'.$lonhost.'" style="'.$styleon{$lonhost}.'" width="100%">'.
                          '<table><tr><th colspan="5" align="center">'.&mt('SSO').'</th><th align="center">'.
                          '<span class="LC_nobreak">'.&mt('Non-SSO').'</span></th></tr>'.
                          '<tr><th>'.&mt('Text').'</th><th>'.&mt('Image').'</th>'.
                          '<th>'.&mt('Alt Text').'</th><th>'.&mt('URL').'</th>'.
                          '<th>'.&mt('Tool Tip').'</th><th>'.&mt('Text').'</th></tr>'.
                          '<tr'.$css_class.'><td><input type="text" name="saml_text_'.$lonhost.'" size="8" value="'.
                          $samltext{$lonhost}.'" /></td><td>';
            if ($samlimg{$lonhost}) {
                $datatable .= '<img src="'.$samlimg{$lonhost}.'" /><br />'.
                              '<span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="saml_img_del" value="'.$lonhost.'" />'.
                              $lt{'del'}.'</label>&nbsp;'.$lt{'rep'}.'</span>';
            } else {
                $datatable .= $lt{'upl'};
            }
            $datatable .='<br />';
            if ($switchserver) {
                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
            } else {
                $datatable .= '<input type="file" name="saml_img_'.$lonhost.'" />';
            }
            $datatable .= '</td>'.
                          '<td><input type="text" name="saml_alt_'.$lonhost.'" size="20" '.
                          'value="'.$samlalt{$lonhost}.'" /></td>'.
                          '<td><input type="text" name="saml_url_'.$lonhost.'" size="8" '.
                          'value="'.$samlurl{$lonhost}.'" /></td>'.
                          '<td><textarea name="saml_title_'.$lonhost.'" rows="3" cols="15">'.
                          $samltitle{$lonhost}.'</textarea></td>'.
                          '<td><input type="text" name="saml_notsso_'.$lonhost.'" size="8" '.
                          'value="'.$samlnotsso{$lonhost}.'" /></td></tr>'.
                          '</table></td>'.
                          '<td id="samloptionsoff_'.$lonhost.'" style="'.$styleoff{$lonhost}.'" width="100%">&nbsp;</td></tr>';
           $itemcount ++;
        }
        $datatable .= '</table></td></tr>';
    }
    return $datatable;
}

sub login_choices {
    my %choices =
        &Apache::lonlocal::texthash (
            coursecatalog => 'Display Course/Community Catalog link?',
            adminmail     => "Display Administrator's E-mail Address?",
            helpdesk      => 'Display "Contact Helpdesk" link',
            disallowlogin => "Login page requests redirected",
            hostid        => "Server",
            server        => "Redirect to:",
            serverpath    => "Path",
            custompath    => "Custom", 
            exempt        => "Exempt IP(s)",
            directlogin   => "No redirect",
            newuser       => "Link to create a user account",
            img           => "Header",
            logo          => "Main Logo",
            domlogo       => "Domain Logo",
            login         => "Log-in Header", 
            textcol       => "Text color",
            bgcol         => "Box color",
            bgs           => "Background colors",
            links         => "Link colors",
            font          => "Font color",
            pgbg          => "Header",
            mainbg        => "Page",
            sidebg        => "Login box",
            link          => "Link",
            alink         => "Active link",
            vlink         => "Visited link",
            headtag       => "Custom markup",
            action        => "Action",
            current       => "Current",
            samllanding   => "Dual login?",
            samloptions   => "Options",
        );
    return %choices;
}

sub login_file_options {
      return &Apache::lonlocal::texthash(
                                           del     => 'Delete?',
                                           rep     => 'Replace:',
                                           upl     => 'Upload:',
                                           curr    => 'View contents',
                                           default => 'Default',
                                           custom  => 'Custom',
                                           none    => 'None',
      );
}

sub print_ipaccess {
    my ($dom,$settings,$rowtotal) = @_;
    my $css_class;
    my $itemcount = 0;
    my $datatable;
    my %ordered;
    if (ref($settings) eq 'HASH') {
        foreach my $item (keys(%{$settings})) {
            if (ref($settings->{$item}) eq 'HASH') {
                my $num = $settings->{$item}{'order'};
                if ($num eq '') {
                    $num = scalar(keys(%{$settings}));
                }
                $ordered{$num} = $item;
            }
        }
    }
    my $maxnum = scalar(keys(%ordered));
    if (keys(%ordered)) {
        my @items = sort { $a <=> $b } keys(%ordered);
        for (my $i=0; $i<@items; $i++) {
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            my $item = $ordered{$items[$i]};
            my ($name,$ipranges,%commblocks,%courses);
            if (ref($settings->{$item}) eq 'HASH') {
                $name = $settings->{$item}->{'name'};
                $ipranges = $settings->{$item}->{'ip'};
                if (ref($settings->{$item}->{'commblocks'}) eq 'HASH') {
                    %commblocks = %{$settings->{$item}->{'commblocks'}};
                }
                if (ref($settings->{$item}->{'courses'}) eq 'HASH') {
                    %courses = %{$settings->{$item}->{'courses'}};
                }
            }
            my $chgstr = ' onchange="javascript:reorderIPaccess(this.form,'."'ipaccess_pos_".$item."'".');"';
            $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                         .'<select name="ipaccess_pos_'.$item.'"'.$chgstr.'>';
            for (my $k=0; $k<=$maxnum; $k++) {
                my $vpos = $k+1;
                my $selstr;
                if ($k == $i) {
                    $selstr = ' selected="selected" ';
                }
                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
            }
            $datatable .= '</select>'.('&nbsp;'x2).
                '<label><input type="checkbox" name="ipaccess_del" value="'.$item.'" />'.
                &mt('Delete?').'</label></span></td>'.
                '<td colspan="2"><input type="hidden" name="ipaccess_id_'.$i.'" value="'.$item.'" />'.
                &ipaccess_options($i,$itemcount,$dom,$name,$ipranges,\%commblocks,\%courses).
                '</td></tr>';
            $itemcount ++;
        }
    }
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    my $chgstr = ' onchange="javascript:reorderIPaccess(this.form,'."'ipaccess_pos_add'".');"';
    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'."\n".
                  '<input type="hidden" name="ipaccess_maxnum" value="'.$maxnum.'" />'."\n".
                  '<select name="ipaccess_pos_add"'.$chgstr.'>';
    for (my $k=0; $k<$maxnum+1; $k++) {
        my $vpos = $k+1;
        my $selstr;
        if ($k == $maxnum) {
            $selstr = ' selected="selected" ';
        }
        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
    }
    $datatable .= '</select>&nbsp;'."\n".
                  '<input type="checkbox" name="ipaccess_add" value="1" />'.&mt('Add').'</span></td>'."\n".
                  '<td colspan="2">'.
                  &ipaccess_options('add',$itemcount,$dom).
                  '</td>'."\n".
                  '</tr>'."\n";
    $$rowtotal ++;
    return $datatable;
}

sub ipaccess_options {
    my ($num,$itemcount,$dom,$name,$ipranges,$blocksref,$coursesref) = @_;
    my (%currblocks,%currcourses,$output);
    if (ref($blocksref) eq 'HASH') {
        %currblocks = %{$blocksref};
    }
    if (ref($coursesref) eq 'HASH') {
        %currcourses = %{$coursesref};
    }
    $output = '<fieldset><legend>'.&mt('Location(s)').'</legend>'.
              '<span class="LC_nobreak">'.&mt('Name').':&nbsp;'.
              '<input type="text" name="ipaccess_name_'.$num.'" value="'.$name.'" />'.
              '</span></fieldset>'.
              '<fieldset><legend>'.&mt('IP Range(s)').'</legend>'.
              &mt('Format for each IP range').': '.&mt('A.B.C.D/N or A.B.C.D-E.F.G.H').'<br />'.
              &mt('Range(s) will be stored as IP netblock(s) in CIDR notation (comma separated)').'<br />'.
              '<textarea name="ipaccess_range_'.$num.'" rows="3" cols="80">'.
              $ipranges.'</textarea></fieldset>'.
              '<fieldset><legend>'.&mt('Functionality Blocked?').'</legend>'.
              &blocker_checkboxes($num,$blocksref).'</fieldset>'.
              '<fieldset><legend>'.&mt('Courses/Communities allowed').'</legend>'.
              '<table>';
    foreach my $cid (sort(keys(%currcourses))) {
        my %courseinfo = &Apache::lonnet::coursedescription($cid,{'one_time' => 1});
        $output .= '<tr><td><span class="LC_nobreak">'.
                   '<label><input type="checkbox" name="ipaccess_course_delete_'.$num.'" value="'.$cid.'" />'.
                   &mt('Delete?').'&nbsp;<span class="LC_cusr_emph">'.$courseinfo{'description'}.'</span></label></span>'.
                   ' <span class="LC_fontsize_medium">('.$cid.')</span></td></tr>';
    }
    $output .= '<tr><td><span class="LC_nobreak">'.&mt('Add').':&nbsp;'.
               '<input type="text" name="ipaccess_cdesc_'.$num.'" value="" onfocus="this.blur();opencrsbrowser('."'display','ipaccess_cnum_$num','ipaccess_cdom_$num','ipaccess_cdesc_$num'".');" />'.
                &Apache::loncommon::selectcourse_link('display','ipaccess_cnum_'.$num,'ipaccess_cdom_'.$num,'ipaccess_cdesc_'.$num,$dom,undef,'Course/Community').
               '<input type="hidden" name="ipaccess_cnum_'.$num.'" value="" />'.
               '<input type="hidden" name="ipaccess_cdom_'.$num.'" value="" />'.
               '</span></td></tr></table>'."\n".
               '</fieldset>';
    return $output;
}

sub blocker_checkboxes {
    my ($num,$blocks) = @_;
    my ($typeorder,$types) = &commblocktype_text();
    my $numinrow = 6;
    my $output = '<table>';
    for (my $i=0; $i<@{$typeorder}; $i++) {
        my $block = $typeorder->[$i];
        my $blockstatus;
        if (ref($blocks) eq 'HASH') {
            if ($blocks->{$block} eq 'on') {
                $blockstatus = 'checked="checked"';
            }
        }
        my $rem = $i%($numinrow);
        if ($rem == 0) {
            if ($i > 0) {
                $output .= '</tr>';
            }
            $output .= '<tr>';
        }
        if ($i == scalar(@{$typeorder})-1) {
            my $colsleft = $numinrow-$rem;
            if ($colsleft > 1) {
                $output .= '<td colspan="'.$colsleft.'">';
            } else {
                $output .= '<td>';
            }
        } else {
            $output .= '<td>';
        }
        my $item = 'ipaccess_block_'.$num;
        if ($blockstatus) {
            $blockstatus = ' '.$blockstatus;
        }
        $output .= '<span class="LC_nobreak"><label>'."\n".
                   '<input type="checkbox" name="'.$item.'"'.
                   $blockstatus.' value="'.$block.'"'.' />'.
                   $types->{$block}.'</label></span>'."\n".
                   '<br /></td>';
    }
    $output .= '</tr></table>';
    return $output;
}

sub commblocktype_text {
    my %types = &Apache::lonlocal::texthash(
        'com' => 'Messaging',
        'chat' => 'Chat Room',
        'boards' => 'Discussion',
        'port' => 'Portfolio',
        'groups' => 'Groups',
        'blogs' => 'Blogs',
        'about' => 'User Information',
        'printout' => 'Printouts',
        'passwd' => 'Change Password',
        'grades' => 'Gradebook',
        'search' => 'Course search',
        'wishlist' => 'Stored links',
        'annotate' => 'Annotations',
    );
    my $typeorder = ['com','chat','boards','port','groups','blogs','about','wishlist','printout','grades','search','annotate','passwd'];
    return ($typeorder,\%types);
}

sub print_rolecolors {
    my ($phase,$role,$dom,$confname,$settings,$rowtotal) = @_;
    my %choices = &color_font_choices();
    my @bgs = ('pgbg','tabbg','sidebg');
    my @links = ('link','alink','vlink');
    my @images = ('img');
    my %alt_text = &Apache::lonlocal::texthash(img => "Banner for $role role");
    my %designhash = &Apache::loncommon::get_domainconf($dom);
    my %defaultdesign = %Apache::loncommon::defaultdesign;
    my (%is_custom,%designs);
    my %defaults = &role_defaults($role,\@bgs,\@links,\@images);
    if (ref($settings) eq 'HASH') {
        if (ref($settings->{$role}) eq 'HASH') {
            if ($settings->{$role}->{'img'} ne '') {
                $designs{'img'} = $settings->{$role}->{'img'};
                $is_custom{'img'} = 1;
            }
            if ($settings->{$role}->{'font'} ne '') {
                $designs{'font'} = $settings->{$role}->{'font'};
                $is_custom{'font'} = 1;
            }
            if ($settings->{$role}->{'fontmenu'} ne '') {
                $designs{'fontmenu'} = $settings->{$role}->{'fontmenu'};
                $is_custom{'fontmenu'} = 1;
            }
            foreach my $item (@bgs) {
                if ($settings->{$role}->{$item} ne '') {
                    $designs{'bgs'}{$item} = $settings->{$role}->{$item};
                    $is_custom{$item} = 1;
                }
            }
            foreach my $item (@links) {
                if ($settings->{$role}->{$item} ne '') {
                    $designs{'links'}{$item} = $settings->{$role}->{$item};
                    $is_custom{$item} = 1;
                }
            }
        }
    } else {
        if ($designhash{$dom.'.'.$role.'.img'} ne '') {
            $designs{img} = $designhash{$dom.'.'.$role.'.img'};
            $is_custom{'img'} = 1;
        }
        if ($designhash{$dom.'.'.$role.'.fontmenu'} ne '') {
            $designs{fontmenu} = $designhash{$dom.'.'.$role.'.fontmenu'};
            $is_custom{'fontmenu'} = 1; 
        }
        if ($designhash{$dom.'.'.$role.'.font'} ne '') {
            $designs{font} = $designhash{$dom.'.'.$role.'.font'};
            $is_custom{'font'} = 1;
        }
        foreach my $item (@bgs) {
            if ($designhash{$dom.'.'.$role.'.'.$item} ne '') {
                $designs{'bgs'}{$item} = $designhash{$dom.'.'.$role.'.'.$item};
                $is_custom{$item} = 1;
            
            }
        }
        foreach my $item (@links) {
            if ($designhash{$dom.'.'.$role.'.'.$item} ne '') {
                $designs{'links'}{$item} = $designhash{$dom.'.'.$role.'.'.$item};
                $is_custom{$item} = 1;
            }
        }
    }
    my $itemcount = 1;
    my $datatable = &display_color_options($dom,$confname,$phase,$role,$itemcount,\%choices,\%is_custom,\%defaults,\%designs,\@images,\@bgs,\@links,\%alt_text,$rowtotal);
    $datatable .= '</tr></table></td></tr>';
    return $datatable;
}

sub role_defaults {
    my ($role,$bgs,$links,$images,$logintext) = @_;
    my %defaults;
    unless ((ref($bgs) eq 'ARRAY') && (ref($links) eq 'ARRAY') && (ref($images) eq 'ARRAY')) {
        return %defaults;
    }
    my %defaultdesign = %Apache::loncommon::defaultdesign;
    if ($role eq 'login') {
        %defaults = (
                       font => $defaultdesign{$role.'.font'},
                    );
        if (ref($logintext) eq 'ARRAY') {
            foreach my $item (@{$logintext}) {
                $defaults{'logintext'}{$item} = $defaultdesign{$role.'.'.$item};
            }
        }
        foreach my $item (@{$images}) {
            $defaults{'showlogo'}{$item} = 1;
        }
    } else {
        %defaults = (
                       img => $defaultdesign{$role.'.img'},
                       font => $defaultdesign{$role.'.font'},
                       fontmenu => $defaultdesign{$role.'.fontmenu'},
                    );
    }
    foreach my $item (@{$bgs}) {
        $defaults{'bgs'}{$item} = $defaultdesign{$role.'.'.$item};
    }
    foreach my $item (@{$links}) {
        $defaults{'links'}{$item} = $defaultdesign{$role.'.'.$item};
    }
    foreach my $item (@{$images}) {
        $defaults{$item} = $defaultdesign{$role.'.'.$item};
    }
    return %defaults;
}

sub display_color_options {
    my ($dom,$confname,$phase,$role,$itemcount,$choices,$is_custom,$defaults,$designs,
        $images,$bgs,$links,$alt_text,$rowtotal,$logintext) = @_;
    my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
    my $css_class = $itemcount%2?' class="LC_odd_row"':'';
    my $datatable = '<tr'.$css_class.'>'.
        '<td>'.$choices->{'font'}.'</td>';
    if (!$is_custom->{'font'}) {
        $datatable .=  '<td>'.&mt('Default in use:').'&nbsp;<span class="css_default_'.$role.'_font" style="color: '.$defaults->{'font'}.';">'.$defaults->{'font'}.'</span></td>';
    } else {
        $datatable .= '<td>&nbsp;</td>';
    }
    my $current_color = $designs->{'font'} ? $designs->{'font'} : $defaults->{'font'};

    $datatable .= '<td><span class="LC_nobreak">'.
                  '<input type="text" class="colorchooser" size="10" name="'.$role.'_font"'.
                  ' value="'.$current_color.'" />&nbsp;'.
                  '&nbsp;</span></td></tr>';
    unless ($role eq 'login') { 
        $datatable .= '<tr'.$css_class.'>'.
                      '<td>'.$choices->{'fontmenu'}.'</td>';
        if (!$is_custom->{'fontmenu'}) {
            $datatable .=  '<td>'.&mt('Default in use:').'&nbsp;<span class="css_default_'.$role.'_font" style="color: '.$defaults->{'fontmenu'}.';">'.$defaults->{'fontmenu'}.'</span></td>';
        } else {
            $datatable .= '<td>&nbsp;</td>';
        }
	$current_color = $designs->{'fontmenu'} ?
	    $designs->{'fontmenu'} : $defaults->{'fontmenu'};
        $datatable .= '<td><span class="LC_nobreak">'.
                      '<input class="colorchooser" type="text" size="10" name="'
		      .$role.'_fontmenu"'.
                      ' value="'.$current_color.'" />&nbsp;'.
                      '&nbsp;</span></td></tr>';
    }
    my $switchserver = &check_switchserver($dom,$confname);
    foreach my $img (@{$images}) {
	$itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'>'.
                      '<td>'.$choices->{$img};
        my ($imgfile,$img_import,$login_hdr_pick,$logincolors);
        if ($role eq 'login') {
            if ($img eq 'login') {
                $login_hdr_pick =
                    &login_header_options($img,$role,$defaults,$is_custom,$choices);
                $logincolors =
                    &login_text_colors($img,$role,$logintext,$phase,$choices,
                                       $designs,$defaults);
            } elsif ($img ne 'domlogo') {
                $datatable.= &logo_display_options($img,$defaults,$designs);
            }
        }
        $datatable .= '</td>';
        if ($designs->{$img} ne '') {
            $imgfile = $designs->{$img};
	    $img_import = ($imgfile =~ m{^/adm/});
        } else {
            $imgfile = $defaults->{$img};
        }
        if ($imgfile) {
            my ($showfile,$fullsize);
            if ($imgfile =~ m-^(/res/\Q$dom\E/\Q$confname\E/\Q$img\E)/([^/]+)$-) {
                my $urldir = $1;
                my $filename = $2;
                my @info = &Apache::lonnet::stat_file($designs->{$img});
                if (@info) {
                    my $thumbfile = 'tn-'.$filename;
                    my @thumb=&Apache::lonnet::stat_file($urldir.'/'.$thumbfile);
                    if (@thumb) {
                        $showfile = $urldir.'/'.$thumbfile;
                    } else {
                        $showfile = $imgfile;
                    }
                } else {
                    $showfile = '';
                }
            } elsif ($imgfile =~ m-^/(adm/[^/]+)/([^/]+)$-) {
                $showfile = $imgfile;
                my $imgdir = $1;
                my $filename = $2;
                if (-e "$londocroot/$imgdir/tn-".$filename) {
                    $showfile = "/$imgdir/tn-".$filename;
                } else {
                    my $input = $londocroot.$imgfile;
                    my $output = "$londocroot/$imgdir/tn-".$filename;
                    if (!-e $output) {
                        my ($width,$height) = &thumb_dimensions();
                        my ($fullwidth,$fullheight) = &check_dimensions($input);
                        if ($fullwidth ne '' && $fullheight ne '') {
                            if ($fullwidth > $width && $fullheight > $height) { 
                                my $size = $width.'x'.$height;
                                my @args = ('convert','-sample',$size,$input,$output);
                                system({$args[0]} @args);
                                $showfile = "/$imgdir/tn-".$filename;
                            }
                        }
                    }
                }
            }
            if ($showfile) {
                if ($showfile =~ m{^/(adm|res)/}) {
                    if ($showfile =~ m{^/res/}) {
                        my $local_showfile =
                            &Apache::lonnet::filelocation('',$showfile);
                        &Apache::lonnet::repcopy($local_showfile);
                    }
                    $showfile = &Apache::loncommon::lonhttpdurl($showfile);
                }
                if ($imgfile) {
                    if ($imgfile  =~ m{^/(adm|res)/}) {
                        if ($imgfile =~ m{^/res/}) {
                            my $local_imgfile =
                                &Apache::lonnet::filelocation('',$imgfile);
                            &Apache::lonnet::repcopy($local_imgfile);
                        }
                        $fullsize = &Apache::loncommon::lonhttpdurl($imgfile);
                    } else {
                        $fullsize = $imgfile;
                    }
                }
                $datatable .= '<td>';
                if ($img eq 'login') {
                    $datatable .= $login_hdr_pick;
                } 
                $datatable .= &image_changes($is_custom->{$img},$alt_text->{$img},$img_import,
                                             $showfile,$fullsize,$role,$img,$imgfile,$logincolors);
            } else {
                $datatable .= '<td>&nbsp;</td><td class="LC_left_item">'.
                              &mt('Upload:').'<br />';
            }
        } else {
            $datatable .= '<td>&nbsp;</td><td class="LC_left_item">'.
                          &mt('Upload:').'<br />';
        }
        if ($switchserver) {
            $datatable .= &mt('Upload to library server: [_1]',$switchserver);
        } else {
            if ($img ne 'login') { # suppress file selection for Log-in header
                $datatable .='&nbsp;<input type="file" name="'.$role.'_'.$img.'" />';
            }
        }
        $datatable .= '</td></tr>';
    }
    $itemcount ++;
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    $datatable .= '<tr'.$css_class.'>'.
                  '<td>'.$choices->{'bgs'}.'</td>';
    my $bgs_def;
    foreach my $item (@{$bgs}) {
        if (!$is_custom->{$item}) {
            $bgs_def .= '<td><span class="LC_nobreak">'.$choices->{$item}.'</span>&nbsp;<span class="css_default_'.$role.'_'.$item.'" style="background-color: '.$defaults->{'bgs'}{$item}.';">&nbsp;&nbsp;&nbsp;</span><br />'.$defaults->{'bgs'}{$item}.'</td>';
        }
    }
    if ($bgs_def) {
        $datatable .= '<td>'.&mt('Default(s) in use:').'<br /><table border="0"><tr>'.$bgs_def.'</tr></table></td>';
    } else {
        $datatable .= '<td>&nbsp;</td>';
    }
    $datatable .= '<td class="LC_right_item">'.
                  '<table border="0"><tr>';

    foreach my $item (@{$bgs}) {
        $datatable .= '<td style="text-align: center">'.$choices->{$item};
	my $color = $designs->{'bgs'}{$item} ? $designs->{'bgs'}{$item} : $defaults->{'bgs'}{$item};
        if ($designs->{'bgs'}{$item}) {
            $datatable .= '&nbsp;';
        }
        $datatable .= '<br /><input type="text" class="colorchooser" size="8" name="'.$role.'_'.$item.'" value="'.$color.
                      '" onblur = "javascript:colchg_span('."'css_".$role.'_'.$item."'".',this);" /></td>';
    }
    $datatable .= '</tr></table></td></tr>';
    $itemcount ++;
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    $datatable .= '<tr'.$css_class.'>'.
                  '<td>'.$choices->{'links'}.'</td>';
    my $links_def;
    foreach my $item (@{$links}) {
        if (!$is_custom->{$item}) {
            $links_def .= '<td>'.$choices->{$item}.'<br /><span class="css_default_'.$role.'_'.$item.'" style="color: '.$defaults->{'links'}{$item}.';">'.$defaults->{'links'}{$item}.'</span></td>';
        }
    }
    if ($links_def) {
        $datatable .= '<td>'.&mt('Default(s) in use:').'<br /><table border="0"><tr>'.$links_def.'</tr></table></td>';
    } else {
        $datatable .= '<td>&nbsp;</td>';
    }
    $datatable .= '<td class="LC_right_item">'.
                  '<table border="0"><tr>';
    foreach my $item (@{$links}) {
	my $color = $designs->{'links'}{$item} ? $designs->{'links'}{$item} : $defaults->{'links'}{$item};
        $datatable .= '<td style="text-align: center">'.$choices->{$item}."\n";
        if ($designs->{'links'}{$item}) {
            $datatable.='&nbsp;';
        }
        $datatable .= '<br /><input type="text" size="8" class="colorchooser" name="'.$role.'_'.$item.'" value="'.$color.
                      '" /></td>';
    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub logo_display_options {
    my ($img,$defaults,$designs) = @_;
    my $checkedon;
    if (ref($defaults) eq 'HASH') {
        if (ref($defaults->{'showlogo'}) eq 'HASH') {
            if ($defaults->{'showlogo'}{$img}) {
                $checkedon = 'checked="checked" ';     
            }
        } 
    }
    if (ref($designs) eq 'HASH') {
        if (ref($designs->{'showlogo'}) eq 'HASH') {
            if (defined($designs->{'showlogo'}{$img})) {
                if ($designs->{'showlogo'}{$img} == 0) {
                    $checkedon = '';
                } elsif ($designs->{'showlogo'}{$img} == 1) {
                    $checkedon = 'checked="checked" ';
                }
            }
        }
    }
    return '<br /><label>&nbsp;&nbsp;<input type="checkbox" name="'.
           'login_showlogo_'.$img.'" value="1" '.$checkedon.'/>'.
           &mt('show').'</label>'."\n";
}

sub login_header_options  {
    my ($img,$role,$defaults,$is_custom,$choices) = @_;
    my $output = '';
    if ((!$is_custom->{'textcol'}) || (!$is_custom->{'bgcol'})) {
        $output .= &mt('Text default(s):').'<br />';
        if (!$is_custom->{'textcol'}) {
            $output .= $choices->{'textcol'}.':&nbsp;'.$defaults->{'logintext'}{'textcol'}.
                       '&nbsp;&nbsp;&nbsp;';
        }
        if (!$is_custom->{'bgcol'}) {
            $output .= $choices->{'bgcol'}.':&nbsp;'.
                       '<span id="css_'.$role.'_font" style="background-color: '.
                       $defaults->{'logintext'}{'bgcol'}.';">&nbsp;&nbsp;&nbsp;</span>';
        }
        $output .= '<br />';
    }
    $output .='<br />';
    return $output;
}

sub login_text_colors {
    my ($img,$role,$logintext,$phase,$choices,$designs,$defaults) = @_;
    my $color_menu = '<table border="0"><tr>';
    foreach my $item (@{$logintext}) {
        $color_menu .= '<td style="text-align: center">'.$choices->{$item};
        my $color = $designs->{'logintext'}{$item} ? $designs->{'logintext'}{$item} : $defaults->{'logintext'}{$item};
        $color_menu .= '<br /><input type="text" class="colorchooser" size="8" name="'.$role.'_'.$item.'" value="'.$color.
                      '" onblur = "javascript:colchg_span('."'css_".$role.'_'.$item."'".',this);" /></td>';
    }
    $color_menu .= '</tr></table><br />';
    return $color_menu;
}

sub image_changes {
    my ($is_custom,$alt_text,$img_import,$showfile,$fullsize,$role,$img,$imgfile,$logincolors) = @_;
    my $output;
    if ($img eq 'login') {
        $output = '</td><td>'.$logincolors; # suppress image for Log-in header
    } elsif (!$is_custom) {
        if ($img ne 'domlogo') {
            $output = &mt('Default image:').'<br />';
        } else {
            $output = &mt('Default in use:').'<br />';
        }
    }
    if ($img ne 'login') {
        if ($img_import) {
            $output .= '<input type="hidden" name="'.$role.'_import_'.$img.'" value="'.$imgfile.'" />';
        }
        $output .= '<a href="'.$fullsize.'" target="_blank"><img src="'.
                   $showfile.'" alt="'.$alt_text.'" border="0" /></a></td>';
        if ($is_custom) {
            $output .= '<td>'.$logincolors.'<span class="LC_nobreak"><label>'.
                       '<input type="checkbox" name="'.
                       $role.'_del_'.$img.'" value="1" />'.&mt('Delete?').
                       '</label>&nbsp;'.&mt('Replace:').'</span><br />';
        } else {
            $output .= '<td class="LC_middle">'.$logincolors.&mt('Upload:').'<br />';
        }
    }
    return $output;
}

sub print_quotas {
    my ($dom,$settings,$rowtotal,$action) = @_;
    my $context;
    if ($action eq 'quotas') {
        $context = 'tools';
    } else {
        $context = $action;
    }
    my ($datatable,$defaultquota,$authorquota,@usertools,@options,%validations);
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    my $typecount = 0;
    my ($css_class,%titles);
    if ($context eq 'requestcourses') {
        @usertools = ('official','unofficial','community','textbook','placement','lti');
        @options =('norequest','approval','validate','autolimit');
        %validations = &Apache::lonnet::auto_courserequest_checks($dom);
        %titles = &courserequest_titles();
    } elsif ($context eq 'requestauthor') {
        @usertools = ('author');
        @options = ('norequest','approval','automatic');
        %titles = &authorrequest_titles();
    } else {
        @usertools = ('aboutme','blog','webdav','portfolio');
        %titles = &tool_titles();
    }
    if (ref($types) eq 'ARRAY') {
        foreach my $type (@{$types}) {
            my ($currdefquota,$currauthorquota);
            unless (($context eq 'requestcourses') ||
                    ($context eq 'requestauthor')) {
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{defaultquota}) eq 'HASH') {
                        $currdefquota = $settings->{defaultquota}->{$type};
                    } else {
                        $currdefquota = $settings->{$type};
                    }
                    if (ref($settings->{authorquota}) eq 'HASH') {
                        $currauthorquota = $settings->{authorquota}->{$type};
                    }
                }
            }
            if (defined($usertypes->{$type})) {
                $typecount ++;
                $css_class = $typecount%2?' class="LC_odd_row"':'';
                $datatable .= '<tr'.$css_class.'>'.
                              '<td>'.$usertypes->{$type}.'</td>'.
                              '<td class="LC_left_item">';
                if ($context eq 'requestcourses') {
                    $datatable .= '<table><tr>';
                }
                my %cell;  
                foreach my $item (@usertools) {
                    if ($context eq 'requestcourses') {
                        my ($curroption,$currlimit);
                        if (ref($settings) eq 'HASH') {
                            if (ref($settings->{$item}) eq 'HASH') {
                                $curroption = $settings->{$item}->{$type};
                                if ($curroption =~ /^autolimit=(\d*)$/) {
                                    $currlimit = $1; 
                                }
                            }
                        }
                        if (!$curroption) {
                            $curroption = 'norequest';
                        }
                        $datatable .= '<th>'.$titles{$item}.'</th>';
                        foreach my $option (@options) {
                            my $val = $option;
                            if ($option eq 'norequest') {
                                $val = 0;  
                            }
                            if ($option eq 'validate') {
                                my $canvalidate = 0;
                                if (ref($validations{$item}) eq 'HASH') { 
                                    if ($validations{$item}{$type}) {
                                        $canvalidate = 1;
                                    }
                                }
                                next if (!$canvalidate);
                            }
                            my $checked = '';
                            if ($option eq $curroption) {
                                $checked = ' checked="checked"';
                            } elsif ($option eq 'autolimit') {
                                if ($curroption =~ /^autolimit/) {
                                    $checked = ' checked="checked"';
                                }                       
                            } 
                            $cell{$item} .= '<span class="LC_nobreak"><label>'.
                                  '<input type="radio" name="crsreq_'.$item.
                                  '_'.$type.'" value="'.$val.'"'.$checked.' />'.
                                  $titles{$option}.'</label>';
                            if ($option eq 'autolimit') {
                                $cell{$item} .= '&nbsp;<input type="text" name="crsreq_'.
                                                $item.'_limit_'.$type.'" size="1" '.
                                                'value="'.$currlimit.'" />';
                            }
                            $cell{$item} .= '</span> ';
                            if ($option eq 'autolimit') {
                                $cell{$item} .= $titles{'unlimited'};
                            }
                        }
                    } elsif ($context eq 'requestauthor') {
                        my $curroption;
                        if (ref($settings) eq 'HASH') {
                            $curroption = $settings->{$type};
                        }
                        if (!$curroption) {
                            $curroption = 'norequest';
                        }
                        foreach my $option (@options) {
                            my $val = $option;
                            if ($option eq 'norequest') {
                                $val = 0;
                            }
                            my $checked = '';
                            if ($option eq $curroption) {
                                $checked = ' checked="checked"';
                            }
                            $datatable .= '<span class="LC_nobreak"><label>'.
                                  '<input type="radio" name="authorreq_'.$type.
                                  '" value="'.$val.'"'.$checked.' />'.
                                  $titles{$option}.'</label></span>&nbsp; ';
                        }
                    } else {
                        my $checked = 'checked="checked" ';
                        if (ref($settings) eq 'HASH') {
                            if (ref($settings->{$item}) eq 'HASH') {
                                if ($settings->{$item}->{$type} == 0) {
                                    $checked = '';
                                } elsif ($settings->{$item}->{$type} == 1) {
                                    $checked =  'checked="checked" ';
                                }
                            }
                        }
                        $datatable .= '<span class="LC_nobreak"><label>'.
                                      '<input type="checkbox" name="'.$context.'_'.$item.
                                      '" value="'.$type.'" '.$checked.'/>'.$titles{$item}.
                                      '</label></span>&nbsp; ';
                    }
                }
                if ($context eq 'requestcourses') {
                    $datatable .= '</tr><tr>';
                    foreach my $item (@usertools) {
                        $datatable .= '<td style="vertical-align: top">'.$cell{$item}.'</td>';  
                    }
                    $datatable .= '</tr></table>';
                }
                $datatable .= '</td>';
                unless (($context eq 'requestcourses') ||
                        ($context eq 'requestauthor')) {
                    $datatable .= 
                              '<td class="LC_right_item">'.
                              '<span class="LC_nobreak">'.&mt('Portfolio').':&nbsp;'.
                              '<input type="text" name="quota_'.$type.
                              '" value="'.$currdefquota.
                              '" size="5" /></span>'.('&nbsp;' x 2).
                              '<span class="LC_nobreak">'.&mt('Authoring').':&nbsp;'.
                              '<input type="text" name="authorquota_'.$type.
                              '" value="'.$currauthorquota.
                              '" size="5" /></span></td>';
                }
                $datatable .= '</tr>';
            }
        }
    }
    unless (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
        $defaultquota = '20';
        $authorquota = '500';
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'defaultquota'}) eq 'HASH') {
                $defaultquota = $settings->{'defaultquota'}->{'default'};
            } elsif (defined($settings->{'default'})) {
                $defaultquota = $settings->{'default'};
            }
            if (ref($settings->{'authorquota'}) eq 'HASH') {
                $authorquota = $settings->{'authorquota'}->{'default'};
            }
        }
    }
    $typecount ++;
    $css_class = $typecount%2?' class="LC_odd_row"':'';
    $datatable .= '<tr'.$css_class.'>'.
                  '<td>'.$othertitle.'</td>'.
                  '<td class="LC_left_item">';
    if ($context eq 'requestcourses') {
        $datatable .= '<table><tr>';
    }
    my %defcell;
    foreach my $item (@usertools) {
        if ($context eq 'requestcourses') {
            my ($curroption,$currlimit);
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{$item}) eq 'HASH') {
                    $curroption = $settings->{$item}->{'default'};
                    if ($curroption =~ /^autolimit=(\d*)$/) {
                        $currlimit = $1;
                    }
                }
            }
            if (!$curroption) {
                $curroption = 'norequest';
            }
            $datatable .= '<th>'.$titles{$item}.'</th>';
            foreach my $option (@options) {
                my $val = $option;
                if ($option eq 'norequest') {
                    $val = 0;
                }
                if ($option eq 'validate') {
                    my $canvalidate = 0;
                    if (ref($validations{$item}) eq 'HASH') {
                        if ($validations{$item}{'default'}) {
                            $canvalidate = 1;
                        }
                    }
                    next if (!$canvalidate);
                }
                my $checked = '';
                if ($option eq $curroption) {
                    $checked = ' checked="checked"';
                } elsif ($option eq 'autolimit') {
                    if ($curroption =~ /^autolimit/) {
                        $checked = ' checked="checked"';
                    }
                }
                $defcell{$item} .= '<span class="LC_nobreak"><label>'.
                                  '<input type="radio" name="crsreq_'.$item.
                                  '_default" value="'.$val.'"'.$checked.' />'.
                                  $titles{$option}.'</label>';
                if ($option eq 'autolimit') {
                    $defcell{$item} .= '&nbsp;<input type="text" name="crsreq_'.
                                       $item.'_limit_default" size="1" '.
                                       'value="'.$currlimit.'" />';
                }
                $defcell{$item} .= '</span> ';
                if ($option eq 'autolimit') {
                    $defcell{$item} .= $titles{'unlimited'};
                }
            }
        } elsif ($context eq 'requestauthor') {
            my $curroption;
            if (ref($settings) eq 'HASH') {
                $curroption = $settings->{'default'};
            }
            if (!$curroption) {
                $curroption = 'norequest';
            }
            foreach my $option (@options) {
                my $val = $option;
                if ($option eq 'norequest') {
                    $val = 0;
                }
                my $checked = '';
                if ($option eq $curroption) {
                    $checked = ' checked="checked"';
                }
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="radio" name="authorreq_default"'.
                              ' value="'.$val.'"'.$checked.' />'.
                              $titles{$option}.'</label></span>&nbsp; ';
            }
        } else {
            my $checked = 'checked="checked" ';
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{$item}) eq 'HASH') {
                    if ($settings->{$item}->{'default'} == 0) {
                        $checked = '';
                    } elsif ($settings->{$item}->{'default'} == 1) {
                        $checked = 'checked="checked" ';
                    }
                }
            }
            $datatable .= '<span class="LC_nobreak"><label>'.
                          '<input type="checkbox" name="'.$context.'_'.$item.
                          '" value="default" '.$checked.'/>'.$titles{$item}.
                          '</label></span>&nbsp; ';
        }
    }
    if ($context eq 'requestcourses') {
        $datatable .= '</tr><tr>';
        foreach my $item (@usertools) {
            $datatable .= '<td style="vertical-align: top">'.$defcell{$item}.'</td>';
        }
        $datatable .= '</tr></table>';
    }
    $datatable .= '</td>';
    unless (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
        $datatable .= '<td class="LC_right_item">'.
                      '<span class="LC_nobreak">'.&mt('Portfolio').':&nbsp;'.
                      '<input type="text" name="defaultquota" value="'.
                      $defaultquota.'" size="5" /></span>'.('&nbsp;' x2).
                      '<span class="LC_nobreak">'.&mt('Authoring').':&nbsp;'.
                      '<input type="text" name="authorquota" value="'.
                      $authorquota.'" size="5" /></span></td>';
    }
    $datatable .= '</tr>';
    $typecount ++;
    $css_class = $typecount%2?' class="LC_odd_row"':'';
    $datatable .= '<tr'.$css_class.'>'.
                  '<td>'.&mt('LON-CAPA Advanced Users').'<br />';
    if ($context eq 'requestcourses') {
        $datatable .= &mt('(overrides affiliation, if set)').
                      '</td>'.
                      '<td class="LC_left_item">'.
                      '<table><tr>';
    } else {
        $datatable .= &mt('(overrides affiliation, if checked)').
                      '</td>'.
                      '<td class="LC_left_item" colspan="2">'.
                      '<br />';
    }
    my %advcell;
    foreach my $item (@usertools) {
        if ($context eq 'requestcourses') {
            my ($curroption,$currlimit);
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{$item}) eq 'HASH') {
                    $curroption = $settings->{$item}->{'_LC_adv'};
                    if ($curroption =~ /^autolimit=(\d*)$/) {
                        $currlimit = $1;
                    }
                }
            }
            $datatable .= '<th>'.$titles{$item}.'</th>';
            my $checked = '';
            if ($curroption eq '') {
                $checked = ' checked="checked"';
            }
            $advcell{$item} .= '<span class="LC_nobreak"><label>'.
                               '<input type="radio" name="crsreq_'.$item.
                               '__LC_adv" value=""'.$checked.' />'.
                               &mt('No override set').'</label></span>&nbsp; ';
            foreach my $option (@options) {
                my $val = $option;
                if ($option eq 'norequest') {
                    $val = 0;
                }
                if ($option eq 'validate') {
                    my $canvalidate = 0;
                    if (ref($validations{$item}) eq 'HASH') {
                        if ($validations{$item}{'_LC_adv'}) {
                            $canvalidate = 1;
                        }
                    }
                    next if (!$canvalidate);
                }
                my $checked = '';
                if ($val eq $curroption) {
                    $checked = ' checked="checked"';
                } elsif ($option eq 'autolimit') {
                    if ($curroption =~ /^autolimit/) {
                        $checked = ' checked="checked"';
                    }
                }
                $advcell{$item} .= '<span class="LC_nobreak"><label>'.
                                  '<input type="radio" name="crsreq_'.$item.
                                  '__LC_adv" value="'.$val.'"'.$checked.' />'.
                                  $titles{$option}.'</label>';
                if ($option eq 'autolimit') {
                    $advcell{$item} .= '&nbsp;<input type="text" name="crsreq_'.
                                       $item.'_limit__LC_adv" size="1" '.
                                       'value="'.$currlimit.'" />';
                }
                $advcell{$item} .= '</span> ';
                if ($option eq 'autolimit') {
                    $advcell{$item} .= $titles{'unlimited'};
                }
            }
        } elsif ($context eq 'requestauthor') {
            my $curroption;
            if (ref($settings) eq 'HASH') {
                $curroption = $settings->{'_LC_adv'};
            }
            my $checked = '';
            if ($curroption eq '') {
                $checked = ' checked="checked"';
            }
            $datatable .= '<span class="LC_nobreak"><label>'.
                          '<input type="radio" name="authorreq__LC_adv"'.
                          ' value=""'.$checked.' />'.
                          &mt('No override set').'</label></span>&nbsp; ';
            foreach my $option (@options) {
                my $val = $option;
                if ($option eq 'norequest') {
                    $val = 0;
                }
                my $checked = '';
                if ($val eq $curroption) {
                    $checked = ' checked="checked"';
                }
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="radio" name="authorreq__LC_adv"'.
                              ' value="'.$val.'"'.$checked.' />'.
                              $titles{$option}.'</label></span>&nbsp; ';
            }
        } else {
            my $checked = 'checked="checked" ';
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{$item}) eq 'HASH') {
                    if ($settings->{$item}->{'_LC_adv'} == 0) {
                        $checked = '';
                    } elsif ($settings->{$item}->{'_LC_adv'} == 1) {
                        $checked = 'checked="checked" ';
                    }
                }
            }
            $datatable .= '<span class="LC_nobreak"><label>'.
                          '<input type="checkbox" name="'.$context.'_'.$item.
                          '" value="_LC_adv" '.$checked.'/>'.$titles{$item}.
                          '</label></span>&nbsp; ';
        }
    }
    if ($context eq 'requestcourses') {
        $datatable .= '</tr><tr>';
        foreach my $item (@usertools) {
            $datatable .= '<td style="vertical-align: top">'.$advcell{$item}.'</td>';
        }
        $datatable .= '</tr></table>';
    }
    $datatable .= '</td></tr>';
    $$rowtotal += $typecount;
    return $datatable;
}

sub print_requestmail {
    my ($dom,$action,$settings,$rowtotal,$customcss,$rowstyle) = @_;
    my ($now,$datatable,%currapp);
    $now = time;
    if (ref($settings) eq 'HASH') {
        if (ref($settings->{'notify'}) eq 'HASH') {
            if ($settings->{'notify'}{'approval'} ne '') {
                map {$currapp{$_}=1;} split(/,/,$settings->{'notify'}{'approval'});
            }
        }
    }
    my $numinrow = 2;
    my $css_class;
    if ($$rowtotal%2) {
        $css_class = 'LC_odd_row';
    }
    if ($customcss) {
        $css_class .= " $customcss";
    }
    $css_class =~ s/^\s+//;
    if ($css_class) {
        $css_class = ' class="'.$css_class.'"';
    }
    if ($rowstyle) {
        $css_class .= ' style="'.$rowstyle.'"';
    }
    my $text;
    if ($action eq 'requestcourses') {
        $text = &mt('Receive notification of course requests requiring approval');
    } elsif ($action eq 'requestauthor') {
        $text = &mt('Receive notification of Authoring Space requests requiring approval');
    } else {
       $text = &mt('Receive notification of queued requests for self-created user accounts requiring approval');
    }
    $datatable = '<tr'.$css_class.'>'.
                 ' <td>'.$text.'</td>'.
                 ' <td class="LC_left_item">';
    my ($numdc,$table,$rows) = &active_dc_picker($dom,$numinrow,'checkbox',
                                                 $action.'notifyapproval',%currapp);
    if ($numdc > 0) {
        $datatable .= $table;
    } else {
        $datatable .= &mt('There are no active Domain Coordinators');
    }
    $datatable .='</td></tr>';
    return $datatable;
}

sub print_studentcode {
    my ($settings,$rowtotal) = @_;
    my $rownum = 0; 
    my ($output,%current);
    my @crstypes = ('official','unofficial','community','textbook','placement','lti');
    if (ref($settings) eq 'HASH') {
        if (ref($settings->{'uniquecode'}) eq 'HASH') {
            foreach my $type (@crstypes) {
                $current{$type} = $settings->{'uniquecode'}{$type};
            }
        }
    }
    $output .= '<tr>'.
               '<td class="LC_left_item">'.&mt('Generate unique six character code as course identifier?').'</td>'.
               '<td class="LC_left_item">';
    foreach my $type (@crstypes) {
        my $check = ' ';
        if ($current{$type}) {
            $check = ' checked="checked" ';
        }
        $output .= '<span class="LC_nobreak"><label>'.
                   '<input type="checkbox" name="uniquecode" value="'.$type.'"'.$check.'/>'.
                   &mt($type).'</label></span>'.('&nbsp;'x2).' ';
    }
    $output .= '</td></tr>';
    $$rowtotal ++;
    return $output;
}

sub print_textbookcourses {
    my ($dom,$type,$settings,$rowtotal) = @_;
    my $rownum = 0;
    my $css_class;
    my $itemcount = 1;
    my $maxnum = 0;
    my $bookshash;
    if (ref($settings) eq 'HASH') {
        $bookshash = $settings->{$type};
    }
    my %ordered;
    if (ref($bookshash) eq 'HASH') {
        foreach my $item (keys(%{$bookshash})) {
            if (ref($bookshash->{$item}) eq 'HASH') {
                my $num = $bookshash->{$item}{'order'};
                $ordered{$num} = $item;
            }
        }
    }
    my $confname = $dom.'-domainconfig';
    my $switchserver = &check_switchserver($dom,$confname);
    my $maxnum = scalar(keys(%ordered));
    my $datatable;
    if (keys(%ordered)) {
        my @items = sort { $a <=> $b } keys(%ordered);
        for (my $i=0; $i<@items; $i++) {
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            my $key = $ordered{$items[$i]};
            my %coursehash=&Apache::lonnet::coursedescription($key);
            my $coursetitle = $coursehash{'description'};
            my ($subject,$title,$author,$publisher,$image,$imgsrc,$cdom,$cnum);
            if (ref($bookshash->{$key}) eq 'HASH') {
                $subject = $bookshash->{$key}->{'subject'};
                $title = $bookshash->{$key}->{'title'};
                if ($type eq 'textbooks') {
                    $publisher = $bookshash->{$key}->{'publisher'};
                    $author = $bookshash->{$key}->{'author'};
                    $image = $bookshash->{$key}->{'image'};
                    if ($image ne '') {
                        my ($path,$imagefile) = ($image =~ m{^(.+)/([^/]+)$});
                        my $imagethumb = "$path/tn-".$imagefile;
                        $imgsrc = '<img src="'.$imagethumb.'" alt="'.&mt('Textbook image').'" />';
                    }
                }
            }
            my $chgstr = ' onchange="javascript:reorderBooks(this.form,'."'$type".'_'."$key','$type'".');"';
            $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                         .'<select name="'.$type.'_'.$key.'"'.$chgstr.'>';
            for (my $k=0; $k<=$maxnum; $k++) {
                my $vpos = $k+1;
                my $selstr;
                if ($k == $i) {
                    $selstr = ' selected="selected" ';
                }
                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
            }
            $datatable .= '</select>'.('&nbsp;'x2).
                '<label><input type="checkbox" name="'.$type.'_del" value="'.$key.'" />'.
                &mt('Delete?').'</label></span></td>'.
                '<td colspan="2">'.
                '<span class="LC_nobreak">'.&mt('Subject:').'<input type="text" size="15" name="'.$type.'_subject_'.$i.'" value="'.$subject.'" /></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.&mt('Title:').'<input type="text" size="30" name="'.$type.'_title_'.$i.'" value="'.$title.'" /></span> ';
            if ($type eq 'textbooks') {
                $datatable .= ('&nbsp;'x2).
                              '<span class="LC_nobreak">'.&mt('Publisher:').'<input type="text" size="10" name="'.$type.'_publisher_'.$i.'" value="'.$publisher.'" /></span> '.
                              ('&nbsp;'x2).
                              '<span class="LC_nobreak">'.&mt('Author(s):').'<input type="text" size="25" name="'.$type.'_author_'.$i.'" value="'.$author.'" /></span> '.
                              ('&nbsp;'x2).
                              '<span class="LC_nobreak">'.&mt('Thumbnail:');
                if ($image) {
                    $datatable .= $imgsrc.
                                  '<label><input type="checkbox" name="'.$type.'_image_del"'.
                                  ' value="'.$key.'" />'.&mt('Delete?').'</label></span> '.
                                  '<span class="LC_nobreak">&nbsp;'.&mt('Replace:').'&nbsp;';
                }
                if ($switchserver) {
                    $datatable .= &mt('Upload to library server: [_1]',$switchserver);
                } else {
                    $datatable .= '<input type="file" name="'.$type.'_image_'.$i.'" value="" />';
                }
            }
            $datatable .= '<input type="hidden" name="'.$type.'_id_'.$i.'" value="'.$type.'_'.$key.'" /></span> '.
                          '<span class="LC_nobreak">'.&mt('LON-CAPA course:').'&nbsp;'.
                          $coursetitle.'</span></td></tr>'."\n";
            $itemcount ++;
        }
    }
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    my $chgstr = ' onchange="javascript:reorderBooks(this.form,'."'$type"."_addbook_pos','$type'".');"';
    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'."\n".
                  '<input type="hidden" name="'.$type.'_maxnum" value="'.$maxnum.'" />'."\n".
                  '<select name="'.$type.'_addbook_pos"'.$chgstr.'>';
    for (my $k=0; $k<$maxnum+1; $k++) {
        my $vpos = $k+1;
        my $selstr;
        if ($k == $maxnum) {
            $selstr = ' selected="selected" ';
        }
        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
    }
    $datatable .= '</select>&nbsp;'."\n".
                  '<input type="checkbox" name="'.$type.'_addbook" value="1" />'.&mt('Add').'</span></td>'."\n".
                  '<td colspan="2">'.
                  '<span class="LC_nobreak">'.&mt('Subject:').'<input type="text" size="15" name="'.$type.'_addbook_subject" value="" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.&mt('Title:').'<input type="text" size="30" name="'.$type.'_addbook_title" value="" /></span> '."\n".
                  ('&nbsp;'x2);
    if ($type eq 'textbooks') {
        $datatable .= '<span class="LC_nobreak">'.&mt('Publisher:').'<input type="text" size="10" name="'.$type.'_addbook_publisher" value="" /></span> '."\n".
                      ('&nbsp;'x2).
                      '<span class="LC_nobreak">'.&mt('Author(s):').'<input type="text" size="25" name="'.$type.'_addbook_author" value="" /></span> '."\n".
                      ('&nbsp;'x2).
                      '<span class="LC_nobreak">'.&mt('Image:').'&nbsp;';
        if ($switchserver) {
            $datatable .= &mt('Upload to library server: [_1]',$switchserver);
        } else {
            $datatable .= '<input type="file" name="'.$type.'_addbook_image" value="" />';
        }
        $datatable .= '</span>'."\n";
    }
    $datatable .= '<span class="LC_nobreak">'.&mt('LON-CAPA course:').'&nbsp;'.
                  &Apache::loncommon::select_dom_form($env{'request.role.domain'},$type.'_addbook_cdom').
                  '<input type="text" size="25" name="'.$type.'_addbook_cnum" value="" />'.
                  &Apache::loncommon::selectcourse_link
                      ('display',$type.'_addbook_cnum',$type.'_addbook_cdom',undef,undef,undef,'Course').
                  '</span></td>'."\n".
                  '</tr>'."\n";
    $itemcount ++;
    return $datatable;
}

sub textbookcourses_javascript {
    my ($settings) = @_;
    return unless(ref($settings) eq 'HASH');
    my (%ordered,%total,%jstext);
    foreach my $type ('textbooks','templates') {
        $total{$type} = 0;
        if (ref($settings->{$type}) eq 'HASH') {
            foreach my $item (keys(%{$settings->{$type}})) {
                if (ref($settings->{$type}->{$item}) eq 'HASH') {
                    my $num = $settings->{$type}->{$item}{'order'};
                    $ordered{$type}{$num} = $item;
                }
            }
            $total{$type} = scalar(keys(%{$settings->{$type}}));
        }
        my @jsarray = ();
        foreach my $item (sort {$a <=> $b } (keys(%{$ordered{$type}}))) {
            push(@jsarray,$ordered{$type}{$item});
        }
        $jstext{$type} = '    var '.$type.' = Array('."'".join("','",@jsarray)."'".');'."\n";
    }
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderBooks(form,item,caller) {
    var changedVal;
$jstext{'textbooks'};
$jstext{'templates'};
    var newpos;
    var maxh;
    if (caller == 'textbooks') {  
        newpos = 'textbooks_addbook_pos';
        maxh = 1 + $total{'textbooks'};
    } else {
        newpos = 'templates_addbook_pos';
        maxh = 1 + $total{'templates'};
    }
    var current = new Array;
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    if (item == newpos) {
        changedVal = newitemVal;
    } else {
        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    if (caller == 'textbooks') {
        for (var i=0; i<textbooks.length; i++) {
            var elementName = 'textbooks_'+textbooks[i];
            if (elementName != item) {
                if (form.elements[elementName]) {
                    var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                    current[currVal] = elementName;
                }
            }
        }
    }
    if (caller == 'templates') {
        for (var i=0; i<templates.length; i++) {
            var elementName = 'templates_'+templates[i];
            if (elementName != item) {
                if (form.elements[elementName]) {
                    var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                    current[currVal] = elementName;
                }
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}

// ]]>
</script>

ENDSCRIPT
}

sub ltitools_javascript {
    my ($settings) = @_;
    my $togglejs = &ltitools_toggle_js();
    unless (ref($settings) eq 'HASH') {
        return $togglejs;
    }
    my (%ordered,$total,%jstext);
    $total = 0;
    foreach my $item (keys(%{$settings})) {
        if (ref($settings->{$item}) eq 'HASH') {
            my $num = $settings->{$item}{'order'};
            $ordered{$num} = $item;
        }
    }
    $total = scalar(keys(%{$settings}));
    my @jsarray = ();
    foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
        push(@jsarray,$ordered{$item});
    }
    my $jstext = '    var ltitools = Array('."'".join("','",@jsarray)."'".');'."\n";
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderLTITools(form,item) {
    var changedVal;
$jstext
    var newpos = 'ltitools_add_pos';
    var maxh = 1 + $total;
    var current = new Array;
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    if (item == newpos) {
        changedVal = newitemVal;
    } else {
        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    for (var i=0; i<ltitools.length; i++) {
        var elementName = 'ltitools_'+ltitools[i];
        if (elementName != item) {
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}

// ]]>
</script>

$togglejs

ENDSCRIPT
}

sub ltitools_toggle_js {
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[

function toggleLTITools(form,setting,item) {
    var radioname = '';
    var divid = '';
    if ((setting == 'passback') || (setting == 'roster')) {
        radioname = 'ltitools_'+setting+'_'+item;
        divid = 'ltitools_'+setting+'time_'+item;
        var num = form.elements[radioname].length;
        if (num) {
            var setvis = '';
            for (var i=0; i<num; i++) {
                if (form.elements[radioname][i].checked) {
                    if (form.elements[radioname][i].value == '1') {
                        if (document.getElementById(divid)) {
                            document.getElementById(divid).style.display = 'inline-block';
                        }
                        setvis = 1;
                    }
                    break;
                }
            }
        }
        if (!setvis) {
            if (document.getElementById(divid)) {
                document.getElementById(divid).style.display = 'none';
            }
        }
    }
    if (setting == 'user') {
        divid = 'ltitools_'+setting+'_div_'+item;
        var checkid = 'ltitools_'+setting+'_field_'+item;
        if (document.getElementById(divid)) {
            if (document.getElementById(checkid)) {
                if (document.getElementById(checkid).checked) {
                    document.getElementById(divid).style.display = 'inline-block';
                } else {
                    document.getElementById(divid).style.display = 'none';
                }
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub wafproxy_javascript {
    my ($dom) = @_;
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function updateWAF() {
    if (document.getElementById('wafproxy_remoteip')) {
        var wafremote = 0;
        if (document.display.wafproxy_remoteip.options[document.display.wafproxy_remoteip.selectedIndex].value == 'h') {
            wafremote = 1;
        }
        var fields = new Array('header','trust');
        for (var i=0; i<fields.length; i++) {
            if (document.getElementById('wafproxy_'+fields[i])) {
                if (wafremote == 1) {
                    document.getElementById('wafproxy_'+fields[i]).style.display = 'table-row';
                }
                else {
                    document.getElementById('wafproxy_'+fields[i]).style.display = 'none';
                }
            }
        }
        if (document.getElementById('wafproxyranges_$dom')) {
            if (wafremote == 1) {
                document.getElementById('wafproxyranges_$dom').style.display = 'inline-block';
            } else {
                for (var i=0; i<document.display.wafproxy_vpnaccess.length; i++) {
                    if (document.display.wafproxy_vpnaccess[i].checked) {
                        if (document.display.wafproxy_vpnaccess[i].value == 0) {
                            document.getElementById('wafproxyranges_$dom').style.display = 'none';
                        }
                    }
                }
            }
        }
    }
    return;
}

function checkWAF() {
    if (document.getElementById('wafproxy_remoteip')) {
        var wafvpn = 0;
        for (var i=0; i<document.display.wafproxy_vpnaccess.length; i++) {
            if (document.display.wafproxy_vpnaccess[i].checked) {
                if (document.display.wafproxy_vpnaccess[i].value == 1) {
                    wafvpn = 1;
                }
                break;
            }
        }
        var vpn = new Array('vpnint','vpnext');
        for (var i=0; i<vpn.length; i++) {
            if (document.getElementById('wafproxy_show_'+vpn[i])) {
                if (wafvpn == 1) {
                    document.getElementById('wafproxy_show_'+vpn[i]).style.display = 'table-row';
                }
                else {
                    document.getElementById('wafproxy_show_'+vpn[i]).style.display = 'none';
                }
            }
        }
        if (document.getElementById('wafproxyranges_$dom')) {
            if (wafvpn == 1) {
                document.getElementById('wafproxyranges_$dom').style.display = 'inline-block';
            }
            else if (document.display.wafproxy_remoteip.options[document.display.wafproxy_remoteip.selectedIndex].value != 'h') {
                document.getElementById('wafproxyranges_$dom').style.display = 'none';
            }
        }
    }
    return;
}

function toggleWAF() {
    if (document.getElementById('wafproxy_table')) {
        var wafproxy = 0;
        for (var i=0; i<document.display.wafproxy_${dom}.length; i++) {
             if (document.display.wafproxy_${dom}[i].checked) {
                 if (document.display.wafproxy_${dom}[i].value == 1) {
                     wafproxy = 1;
                     break;
                }
            }
        }
        if (wafproxy == 1) {
            document.getElementById('wafproxy_table').style.display='inline';
        }
        else {
           document.getElementById('wafproxy_table').style.display='none';
        }
        if (document.getElementById('wafproxyrow_${dom}')) {
            if (wafproxy == 1) {
                document.getElementById('wafproxyrow_${dom}').style.display = 'table-row';
            }
            else {
                document.getElementById('wafproxyrow_${dom}').style.display = 'none';
            }
        }
        if (document.getElementById('nowafproxyrow_$dom')) {
            if (wafproxy == 1) {
                document.getElementById('nowafproxyrow_${dom}').style.display = 'none';
            }
            else {
                document.getElementById('nowafproxyrow_${dom}').style.display = 'table-row';
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub proctoring_javascript {
    my ($settings) = @_;
    my (%ordered,$total,%jstext);
    $total = 0;
    if (ref($settings) eq 'HASH') {
        foreach my $item (keys(%{$settings})) {
            if (ref($settings->{$item}) eq 'HASH') {
                my $num = $settings->{$item}{'order'};
                $ordered{$num} = $item;
            }
        }
        $total = scalar(keys(%{$settings}));
    } else {
        %ordered = (
                       0 => 'proctorio',
                       1 => 'examity',
                   );
        $total = 2; 
    }
    my @jsarray = ();
    foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
        push(@jsarray,$ordered{$item});
    }
    my $jstext = '    var proctors = Array('."'".join("','",@jsarray)."'".');'."\n";
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderProctoring(form,item) {
    var changedVal;
$jstext
    var maxh = $total;
    var current = new Array;
    var changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
    for (var i=0; i<proctors.length; i++) {
        var elementName = 'proctoring_pos_'+proctors[i];
        if (elementName != item) {
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}

function toggleProctoring(form,item) {
    var fieldsets = document.getElementsByClassName('proctoring_'+item);
    if (fieldsets.length) {
        var radioname = 'proctoring_available_'+item;
        var num = form.elements[radioname].length;
        if (num) {
            var setvis = '';
            for (var i=0; i<num; i++) {
                if (form.elements[radioname][i].checked) {
                    if (form.elements[radioname][i].value == '1') {
                       setvis = 1;
                       break;
                    }
                }
            }
            for (var j=0; j<fieldsets.length; j++) {
                if (setvis) {
                    fieldsets[j].style.display = 'block';
                } else {
                    fieldsets[j].style.display = 'none';
                }
            }
        }
    }
    return;
}

// ]]>
</script>

ENDSCRIPT
}


sub lti_javascript {
    my ($settings) = @_;
    my $togglejs = &lti_toggle_js();
    unless (ref($settings) eq 'HASH') {
        return $togglejs;
    }
    my (%ordered,$total,%jstext);
    $total = scalar(keys(%{$settings}));
    foreach my $item (keys(%{$settings})) {
        if (ref($settings->{$item}) eq 'HASH') {
            my $num = $settings->{$item}{'order'};
            if ($num eq '') {
                $num = $total - 1;
            }
            $ordered{$num} = $item;
        }
    }
    my @jsarray = ();
    foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
        push(@jsarray,$ordered{$item});
    }
    my $jstext = '    var lti = Array('."'".join("','",@jsarray)."'".');'."\n";
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderLTI(form,item) {
    var changedVal;
$jstext
    var newpos = 'lti_pos_add';
    var maxh = 1 + $total;
    var current = new Array;
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    if (item == newpos) {
        changedVal = newitemVal;
    } else {
        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    for (var i=0; i<lti.length; i++) {
        var elementName = 'lti_pos_'+lti[i];
        if (elementName != item) {
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}
// ]]>
</script>

$togglejs

ENDSCRIPT
}

sub lti_toggle_js {
    my %lcauthparmtext = &Apache::lonlocal::texthash (
                            localauth => 'Local auth argument',
                            krb       => 'Kerberos domain',
                         );
    my $crsincalert = &mt('"User\'s identity sent" needs to be set to "Yes" first,[_1] before setting "Course\'s identity sent" to "Yes"',"\n");
    &js_escape(\$crsincalert);
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[

function toggleLTI(form,setting,item) {
    if ((setting == 'requser') || (setting == 'crsinc')) {
        var usrfieldsets = document.getElementsByClassName('ltioption_usr_'+item);
        var setvis = '';
        var radioname = 'lti_requser_'+item;
        var num = form.elements[radioname].length;
        if (num) {
            for (var i=0; i<num; i++) {
                if (form.elements[radioname][i].checked) {
                    if (form.elements[radioname][i].value == '1') {
                        setvis = 1;
                        break;
                    }
                }
            }
        }
        if (usrfieldsets.length) {
            for (var j=0; j<usrfieldsets.length; j++) {
                if (setvis) {
                    usrfieldsets[j].style.display = 'block';
                } else {
                    usrfieldsets[j].style.display = 'none';
                }
            }
        }
        var crsfieldsets = document.getElementsByClassName('ltioption_crs_'+item);
        if (crsfieldsets.length) {
            radioname = 'lti_crsinc_'+item;
            var num = form.elements[radioname].length;
            if (num) {
                var crsvis = '';
                for (var i=0; i<num; i++) {
                    if (form.elements[radioname][i].checked) {
                        if (form.elements[radioname][i].value == '1') {
                            if (setvis == '') {
                                if (setting == 'crsinc'){
                                    alert("$crsincalert");
                                    form.elements[radioname][0].checked = true;
                                }
                            } else {
                                crsvis = 1;
                            }
                            break;
                        }
                    }
                }
                setvis = crsvis;
            }
            for (var j=0; j<crsfieldsets.length; j++) {
                if (setvis) {
                    crsfieldsets[j].style.display = 'block';
                } else {
                    crsfieldsets[j].style.display = 'none';
                }
            }
        }
    } else if ((setting == 'user') || (setting == 'crs') || (setting == 'passback') || (setting == 'callback')) {
        var radioname = '';
        var divid = '';
        if (setting == 'user') {
            radioname = 'lti_mapuser_'+item;
            divid = 'lti_userfield_'+item;
        } else if (setting == 'crs') {
            radioname = 'lti_mapcrs_'+item;
            divid = 'lti_crsfield_'+item;
        } else if (setting == 'callback') {
            radioname = 'lti_callback_'+item;
            divid = 'lti_callbackfield_'+item;
        } else {
            radioname = 'lti_passback_'+item;
            divid =  'lti_passback_'+item;
        }
        var num = form.elements[radioname].length;
        if (num) {
            var setvis = '';
            for (var i=0; i<num; i++) {
               if (form.elements[radioname][i].checked) {
                   if ((setting == 'passback') || (setting == 'callback')) {
                       if (form.elements[radioname][i].value == '1') {
                           if (document.getElementById(divid)) {
                               document.getElementById(divid).style.display = 'inline-block';
                           }
                           setvis = 1;
                           break;
                       }
                   } else {
                       if (form.elements[radioname][i].value == 'other') {
                           if (document.getElementById(divid)) {
                               document.getElementById(divid).style.display = 'inline-block';
                           }
                           setvis = 1;
                           break;
                       }
                   }
               } 
            }
            if (!setvis) {
                if (document.getElementById(divid)) {
                    document.getElementById(divid).style.display = 'none';
                }
            }
        }
    } else if ((setting == 'sec') || (setting == 'secsrc')) {
        var numsec = form.elements['lti_crssec_'+item].length;
        if (numsec) {
            var setvis = '';
            for (var i=0; i<numsec; i++) {
                if (form.elements['lti_crssec_'+item][i].checked) {
                    if (form.elements['lti_crssec_'+item][i].value == '1') {
                        if (document.getElementById('lti_crssecfield_'+item)) {
                            document.getElementById('lti_crssecfield_'+item).style.display = 'inline-block';
                            setvis = 1;
                            var numsrcsec = form.elements['lti_crssecsrc_'+item].length;
                            if (numsrcsec) {
                                var setsrcvis = '';
                                for (var j=0; j<numsrcsec; j++) {
                                    if (form.elements['lti_crssecsrc_'+item][j].checked) {
                                        if (form.elements['lti_crssecsrc_'+item][j].value == 'other') {
                                            if (document.getElementById('lti_secsrcfield_'+item)) {
                                                document.getElementById('lti_secsrcfield_'+item).style.display = 'inline-block';
                                                setsrcvis = 1;
                                            }
                                        }
                                    }
                                }
                                if (!setsrcvis) {
                                    if (document.getElementById('lti_secsrcfield_'+item)) {
                                        document.getElementById('lti_secsrcfield_'+item).style.display = 'none';
                                    }
                                }
                            }
                        }
                    }
                }
            }
            if (!setvis) {
                if (document.getElementById('lti_crssecfield_'+item)) {
                    document.getElementById('lti_crssecfield_'+item).style.display = 'none';
                }
                if (document.getElementById('lti_secsrcfield_'+item)) {
                    document.getElementById('lti_secsrcfield_'+item).style.display = 'none';
                }
            }
        }
    } else if (setting == 'lcauth') {
        var numauth = form.elements['lti_lcauth_'+item].length;
        if (numauth) {
            for (var i=0; i<numauth; i++) {
                if (form.elements['lti_lcauth_'+item][i].checked) {
                    if (document.getElementById('lti_'+setting+'_parmrow_'+item)) {
                        if ((form.elements['lti_'+setting+'_'+item][i].value == 'internal') || (form.elements['lti_'+setting+'_'+item][i].value == 'lti')) {
                            document.getElementById('lti_'+setting+'_parmrow_'+item).style.display = 'none';
                        } else {
                            document.getElementById('lti_'+setting+'_parmrow_'+item).style.display = 'table-row';
                            if (document.getElementById('lti_'+setting+'_parmtext_'+item)) {
                                if (form.elements['lti_'+setting+'_'+item][i].value == 'localauth') {
                                    document.getElementById('lti_'+setting+'_parmtext_'+item).innerHTML = "$lcauthparmtext{'localauth'}";
                                } else {
                                    document.getElementById('lti_'+setting+'_parmtext_'+item).innerHTML = "$lcauthparmtext{'krb'}";
                                }
                            }
                        }
                    }
                }
            }
        }
    } else if (setting == 'lcmenu') {
        var menus = new Array('lti_topmenu_'+item,'lti_inlinemenu_'+item);
        var divid = 'lti_menufield_'+item;
        var setvis = '';
        for (var i=0; i<menus.length; i++) {
            var radioname = menus[i];  
            var num = form.elements[radioname].length;
            if (num) {
                for (var j=0; j<num; j++) {
                    if (form.elements[radioname][j].checked) {
                        if (form.elements[radioname][j].value == '1') {
                            if (document.getElementById(divid)) {
                                document.getElementById(divid).style.display = 'inline-block';
                            }
                            setvis = 1;
                            break;
                        }
                    }
                }
            }
            if (setvis == 1) {
                break;
            }
        }
        if (!setvis) {
            if (document.getElementById(divid)) {
                document.getElementById(divid).style.display = 'none';
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub autoupdate_javascript {
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function toggleLastActiveDays(form) {
    var radioname = 'lastactive';
    var divid = 'lastactive_div';
    var num = form.elements[radioname].length;
    if (num) {
        var setvis = '';
        for (var i=0; i<num; i++) {
            if (form.elements[radioname][i].checked) {
                if (form.elements[radioname][i].value == '1') {
                    if (document.getElementById(divid)) {
                        document.getElementById(divid).style.display = 'inline-block';
                    }
                    setvis = 1;
                }
                break;
            }
        }
        if (!setvis) {
            if (document.getElementById(divid)) {
                document.getElementById(divid).style.display = 'none';
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub autoenroll_javascript {
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function toggleFailsafe(form) {
    var radioname = 'autoenroll_failsafe';
    var divid = 'autoenroll_failsafe_div';
    var num = form.elements[radioname].length;
    if (num) {
        var setvis = '';
        for (var i=0; i<num; i++) {
            if (form.elements[radioname][i].checked) {
                if ((form.elements[radioname][i].value == 'zero') || (form.elements[radioname][i].value == 'any')) {
                    if (document.getElementById(divid)) {
                        document.getElementById(divid).style.display = 'inline-block';
                    }
                    setvis = 1;
                }
                break;
            }
        }
        if (!setvis) {
            if (document.getElementById(divid)) {
                document.getElementById(divid).style.display = 'none';
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub saml_javascript {
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function toggleSamlOptions(form,hostid) { 
    var radioname = 'saml_'+hostid;
    var tablecellon = 'samloptionson_'+hostid;
    var tablecelloff = 'samloptionsoff_'+hostid;
    var num = form.elements[radioname].length;
    if (num) {
        var setvis = ''; 
        for (var i=0; i<num; i++) {
            if (form.elements[radioname][i].checked) {
                if (form.elements[radioname][i].value == '1') { 
                    if (document.getElementById(tablecellon)) {
                        document.getElementById(tablecellon).style.display='';
                    }
                    if (document.getElementById(tablecelloff)) {
                        document.getElementById(tablecelloff).style.display='none';
                    }
                    setvis = 1;
                }
                break;
            }
        }
        if (!setvis) {
            if (document.getElementById(tablecellon)) {
                document.getElementById(tablecellon).style.display='none';
            }
            if (document.getElementById(tablecelloff)) {
                document.getElementById(tablecelloff).style.display='';
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub ipaccess_javascript {
    my ($settings) = @_;
    my (%ordered,$total,%jstext);
    $total = 0;
    if (ref($settings) eq 'HASH') {
        foreach my $item (keys(%{$settings})) {
            if (ref($settings->{$item}) eq 'HASH') {
                my $num = $settings->{$item}{'order'};
                $ordered{$num} = $item;
            }
        }
        $total = scalar(keys(%{$settings}));
    }
    my @jsarray = ();
    foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
        push(@jsarray,$ordered{$item});
    }
    my $jstext = '    var ipaccess = Array('."'".join("','",@jsarray)."'".');'."\n";
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderIPaccess(form,item) {
    var changedVal;
$jstext
    var newpos = 'ipaccess_pos_add';
    var maxh = 1 + $total;
    var current = new Array;
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    if (item == newpos) {
        changedVal = newitemVal;
    } else {
        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    for (var i=0; i<ipaccess.length; i++) {
        var elementName = 'ipaccess_pos_'+ipaccess[i];
        if (elementName != item) {
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT
}

sub print_autoenroll {
    my ($dom,$settings,$rowtotal) = @_;
    my $autorun = &Apache::lonnet::auto_run(undef,$dom),
    my ($defdom,$runon,$runoff,$coownerson,$coownersoff,
        $failsafe,$autofailsafe,$failsafesty,%failsafechecked);
    $failsafesty = 'none';
    %failsafechecked = (
        off => ' checked="checked"',
    );
    if (ref($settings) eq 'HASH') {
        if (exists($settings->{'run'})) {
            if ($settings->{'run'} eq '0') {
                $runoff = ' checked="checked" ';
                $runon = ' ';
            } else {
                $runon = ' checked="checked" ';
                $runoff = ' ';
            }
        } else {
            if ($autorun) {
                $runon = ' checked="checked" ';
                $runoff = ' ';
            } else {
                $runoff = ' checked="checked" ';
                $runon = ' ';
            }
        }
        if (exists($settings->{'co-owners'})) {
            if ($settings->{'co-owners'} eq '0') {
                $coownersoff = ' checked="checked" ';
                $coownerson = ' ';
            } else {
                $coownerson = ' checked="checked" ';
                $coownersoff = ' ';
            }
        } else {
            $coownersoff = ' checked="checked" ';
            $coownerson = ' ';
        }
        if (exists($settings->{'sender_domain'})) {
            $defdom = $settings->{'sender_domain'};
        }
        if (exists($settings->{'failsafe'})) {
            $failsafe = $settings->{'failsafe'};
            if ($failsafe eq 'zero') {
                $failsafechecked{'zero'} = ' checked="checked"';
                $failsafechecked{'off'} = '';
                $failsafesty = 'inline-block';
            } elsif ($failsafe eq 'any') {
                $failsafechecked{'any'} = ' checked="checked"';
                $failsafechecked{'off'} = '';
            }
            $autofailsafe = $settings->{'autofailsafe'};
        } elsif (exists($settings->{'autofailsafe'})) {
            $autofailsafe = $settings->{'autofailsafe'};
            if ($autofailsafe ne '') {
                $failsafechecked{'zero'} = ' checked="checked"';
                $failsafe = 'zero';
                $failsafechecked{'off'} = '';
            }
        }
    } else {
        if ($autorun) {
            $runon = ' checked="checked" ';
            $runoff = ' ';
        } else {
            $runoff = ' checked="checked" ';
            $runon = ' ';
        }
    }
    my $domform = &Apache::loncommon::select_dom_form($defdom,'sender_domain',1);
    my $notif_sender;
    if (ref($settings) eq 'HASH') {
        $notif_sender = $settings->{'sender_uname'};
    }
    my $datatable='<tr class="LC_odd_row">'.
                  '<td>'.&mt('Auto-enrollment active?').'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="autoenroll_run"'.
                  $runon.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                  '<label><input type="radio" name="autoenroll_run"'.
                  $runoff.' value="0" />'.&mt('No').'</label></span></td>'.
                  '</tr><tr>'.
                  '<td>'.&mt('Notification messages - sender').
                  '</td><td class="LC_right_item"><span class="LC_nobreak">'.
                  &mt('username').':&nbsp;'.
                  '<input type="text" name="sender_uname" value="'.
                  $notif_sender.'" size="10" />&nbsp;&nbsp;'.&mt('domain').
                  ':&nbsp;'.$domform.'</span></td></tr>'.
                  '<tr class="LC_odd_row">'.
                  '<td>'.&mt('Automatically assign co-ownership').'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="autoassign_coowners"'.
                  $coownerson.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                  '<label><input type="radio" name="autoassign_coowners"'.
                  $coownersoff.' value="0" />'.&mt('No').'</label></span></td>'.
                  '</tr><tr>'.
                  '<td>'.&mt('Failsafe for no drops when institutional data missing').'</td>'.
                  '<td class="LC_left_item"><span class="LC_nobreak">'.
                  '<span class="LC_nobreak"><label><input type="radio" name="autoenroll_failsafe" value="off" onclick="toggleFailsafe(this.form)"'.$failsafechecked{'off'}.' />'.&mt('Not in use').'</label></span>&nbsp;&nbsp;&nbsp; '.
                  '<span class="LC_nobreak"><label><input type="radio" name="autoenroll_failsafe" value="zero" onclick="toggleFailsafe(this.form)"'.$failsafechecked{'zero'}.' />'.&mt('Retrieved section enrollment is zero').'</label></span><br />'.
                  '<span class="LC_nobreak"><label><input type="radio" name="autoenroll_failsafe" value="any" onclick="toggleFailsafe(this.form)"'.$failsafechecked{'any'}.' />'.&mt('Retrieved section enrollment is zero or greater').'</label></span>'.
                  '<div class="LC_floatleft" style="display:'.$failsafesty.';" id="autoenroll_failsafe_div">'.
                  '<span class="LC_nobreak">'.
                  &mt('Threshold for number of students in section to drop: [_1]',
                      '<input type="text" name="autoenroll_autofailsafe" value="'.$autofailsafe.'" size="4" />').
                  '</span></div></td></tr>';
    $$rowtotal += 4;
    return $datatable;
}

sub print_autoupdate {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my ($enable,$datatable);
    if ($position eq 'top') {
        my %choices = &Apache::lonlocal::texthash (
                          run        => 'Auto-update active?',
                          classlists => 'Update information in classlists?',
                          unexpired  => 'Skip updates for users without active or future roles?',
                          lastactive => 'Skip updates for inactive users?',
        );
        my $itemcount = 0;
        my $updateon = ' ';
        my $updateoff = ' checked="checked" ';
        if (ref($settings) eq 'HASH') {
            if ($settings->{'run'} eq '1') {
                $updateon = $updateoff;
                $updateoff = ' ';
            }
        }
        $enable = '<tr class="LC_odd_row">'.
                  '<td>'.$choices{'run'}.'</td>'.
                  '<td class="LC_left_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="autoupdate_run"'.
                  $updateoff.'value="0" />'.&mt('No').'</label>&nbsp;'.
                  '<label><input type="radio" name="autoupdate_run"'.
                  $updateon.'value="1" />'.&mt('Yes').'</label></span></td>'.
                  '</tr>';
        my @toggles = ('classlists','unexpired');
        my %defaultchecked = ('classlists' => 'off',
                              'unexpired'  => 'off'
                              );
        $$rowtotal ++;
        ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
                                                     \%choices,$itemcount,'','','left','no');
        $datatable = $enable.$datatable;
        $$rowtotal += $itemcount;
        my $lastactiveon = ' ';
        my $lastactiveoff = ' checked="checked" ';
        my $lastactivestyle = 'none';
        my $lastactivedays;
        my $onclick = ' onclick="javascript:toggleLastActiveDays(this.form);"';
        if (ref($settings) eq 'HASH') {
            if ($settings->{'lastactive'} =~ /^\d+$/) {
                $lastactiveon = $lastactiveoff;
                $lastactiveoff = ' ';
                $lastactivestyle = 'inline-block';
                $lastactivedays = $settings->{'lastactive'};
            }
        }
        my $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'>'.
                      '<td>'.$choices{'lastactive'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak"><label>'.
                      '<input type="radio" name="lastactive"'.
                      $lastactiveoff.'value="0"'.$onclick.' />'.&mt('No').'</label>'.
                      '&nbsp;<label>'.
                      '<input type="radio" name="lastactive"'.
                      $lastactiveon.' value="1"'.$onclick.' />'.&mt('Yes').'</label>'.
                      '<div id="lastactive_div" style="display:'.$lastactivestyle.';">'.
                      ':&nbsp;'.&mt('inactive = no activity in last [_1] days',
                          '<input type="text" size="5" name="lastactivedays" value="'.
                          $lastactivedays.'" />').
                      '</span></td>'.
                      '</tr>';
        $$rowtotal ++;
    } elsif ($position eq 'middle') {
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        my $numinrow = 3;
        my $locknamesettings;
        $datatable .= &insttypes_row($settings,$types,$usertypes,
                                     $dom,$numinrow,$othertitle,
                                    'lockablenames',$rowtotal);
        $$rowtotal ++;
    } else {
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        my @fields = ('lastname','firstname','middlename','generation',
                      'permanentemail','id');
        my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
        my $numrows = 0;
        if (ref($types) eq 'ARRAY') {
            if (@{$types} > 0) {
                $datatable = 
                    &usertype_update_row($settings,$usertypes,\%fieldtitles,
                                         \@fields,$types,\$numrows);
                    $$rowtotal += @{$types}; 
            }
        }
        $datatable .= 
            &usertype_update_row($settings,{'default' => $othertitle},
                                 \%fieldtitles,\@fields,['default'],
                                 \$numrows);
        $$rowtotal ++;     
    }
    return $datatable;
}

sub print_autocreate {
    my ($dom,$settings,$rowtotal) = @_;
    my (%createon,%createoff,%currhash);
    my @types = ('xml','req');
    if (ref($settings) eq 'HASH') {
        foreach my $item (@types) {
            $createoff{$item} = ' checked="checked" ';
            $createon{$item} = ' ';
            if (exists($settings->{$item})) {
                if ($settings->{$item}) {
                    $createon{$item} = ' checked="checked" ';
                    $createoff{$item} = ' ';
                }
            }
        }
        if ($settings->{'xmldc'} ne '') {
            $currhash{$settings->{'xmldc'}} = 1;
        }
    } else {
        foreach my $item (@types) {
            $createoff{$item} = ' checked="checked" ';
            $createon{$item} = ' ';
        }
    }
    $$rowtotal += 2;
    my $numinrow = 2;
    my $datatable='<tr class="LC_odd_row">'.
                  '<td>'.&mt('Create pending official courses from XML files').'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="autocreate_xml"'.
                  $createon{'xml'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                  '<label><input type="radio" name="autocreate_xml"'.
                  $createoff{'xml'}.' value="0" />'.&mt('No').'</label></span>'.
                  '</td></tr><tr>'.
                  '<td>'.&mt('Create pending requests for official courses (if validated)').'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="autocreate_req"'.
                  $createon{'req'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                  '<label><input type="radio" name="autocreate_req"'.
                  $createoff{'req'}.' value="0" />'.&mt('No').'</label></span>';
    my ($numdc,$dctable,$rows) = &active_dc_picker($dom,$numinrow,'radio',
                                                   'autocreate_xmldc',%currhash);
    $datatable .= '</td></tr><tr class="LC_odd_row"><td>';
    if ($numdc > 1) {
        $datatable .= &mt('Course creation processed as: (choose Dom. Coord.)').
                      '</td><td class="LC_left_item">';
    } else {
        $datatable .= &mt('Course creation processed as:').
                      '</td><td class="LC_right_item">';
    }
    $datatable .= $dctable.'</td></tr>';
    $$rowtotal += $rows;
    return $datatable;
}

sub print_directorysrch {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $datatable;
    if ($position eq 'top') {
        my $instsrchon = ' ';
        my $instsrchoff = ' checked="checked" ';
        my ($exacton,$containson,$beginson);
        my $instlocalon = ' ';
        my $instlocaloff = ' checked="checked" ';
        if (ref($settings) eq 'HASH') {
            if ($settings->{'available'} eq '1') {
                $instsrchon = $instsrchoff;
                $instsrchoff = ' ';
            }
            if ($settings->{'localonly'} eq '1') {
                $instlocalon = $instlocaloff;
                $instlocaloff = ' ';
            }
            if (ref($settings->{'searchtypes'}) eq 'ARRAY') {
                foreach my $type (@{$settings->{'searchtypes'}}) {
                    if ($type eq 'exact') {
                        $exacton = ' checked="checked" ';
                    } elsif ($type eq 'contains') {
                        $containson = ' checked="checked" ';
                    } elsif ($type eq 'begins') {
                        $beginson = ' checked="checked" ';
                    }
                }
            } else {
                if ($settings->{'searchtypes'} eq 'exact') {
                    $exacton = ' checked="checked" ';
                } elsif ($settings->{'searchtypes'} eq 'contains') {
                    $containson = ' checked="checked" ';
                } elsif ($settings->{'searchtypes'} eq 'specify') {
                    $exacton = ' checked="checked" ';
                    $containson = ' checked="checked" ';
                }
            }
        }
        my ($searchtitles,$titleorder) = &sorted_searchtitles();
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);

        my $numinrow = 4;
        my $cansrchrow = 0;
        $datatable='<tr class="LC_odd_row">'.
                   '<td colspan="2"><span class ="LC_nobreak">'.&mt('Institutional directory search available?').'</span></td>'.
                   '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                   '<input type="radio" name="dirsrch_available"'.
                   $instsrchon.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                   '<label><input type="radio" name="dirsrch_available"'.
                   $instsrchoff.' value="0" />'.&mt('No').'</label></span></td>'.
                   '</tr><tr>'.
                   '<td colspan="2"><span class ="LC_nobreak">'.&mt('Other domains can search institution?').'</span></td>'.
                   '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                   '<input type="radio" name="dirsrch_instlocalonly"'.
                   $instlocaloff.' value="0" />'.&mt('Yes').'</label>&nbsp;'.
                   '<label><input type="radio" name="dirsrch_instlocalonly"'.
                   $instlocalon.' value="1" />'.&mt('No').'</label></span></td>'.
                   '</tr>';
        $$rowtotal += 2;
        if (ref($usertypes) eq 'HASH') {
            if (keys(%{$usertypes}) > 0) {
                $datatable .= &insttypes_row($settings,$types,$usertypes,$dom,
                                             $numinrow,$othertitle,'cansearch',
                                             $rowtotal);
                $cansrchrow = 1;
            }
        }
        if ($cansrchrow) {
            $$rowtotal ++;
            $datatable .= '<tr>';
        } else {
            $datatable .= '<tr class="LC_odd_row">';
        }
        $datatable .= '<td><span class ="LC_nobreak">'.&mt('Supported search methods').
                      '</span></td><td class="LC_left_item" colspan="2"><table><tr>';
        foreach my $title (@{$titleorder}) {
            if (defined($searchtitles->{$title})) {
                my $check = ' ';
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{'searchby'}) eq 'ARRAY') {
                        if (grep(/^\Q$title\E$/,@{$settings->{'searchby'}})) {
                            $check = ' checked="checked" ';
                        }
                    }
                }
                $datatable .= '<td class="LC_left_item">'.
                              '<span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="searchby" '.
                              'value="'.$title.'"'.$check.'/>'.
                              $searchtitles->{$title}.'</label></span></td>';
            }
        }
        $datatable .= '</tr></table></td></tr>';
        $$rowtotal ++;
        if ($cansrchrow) {
            $datatable .= '<tr class="LC_odd_row">';
        } else {
            $datatable .= '<tr>';
        }
        $datatable .= '<td><span class ="LC_nobreak">'.&mt('Search latitude').'</span></td>'.   
                      '<td class="LC_left_item" colspan="2">'.
                      '<span class="LC_nobreak"><label>'.
                      '<input type="checkbox" name="searchtypes" '.
                      $exacton.' value="exact" />'.&mt('Exact match').
                      '</label>&nbsp;'.
                      '<label><input type="checkbox" name="searchtypes" '.
                      $beginson.' value="begins" />'.&mt('Begins with').
                      '</label>&nbsp;'.
                      '<label><input type="checkbox" name="searchtypes" '.
                      $containson.' value="contains" />'.&mt('Contains').
                      '</label></span></td></tr>';
        $$rowtotal ++;
    } else {
        my $domsrchon = ' checked="checked" ';
        my $domsrchoff = ' ';
        my $domlocalon = ' ';
        my $domlocaloff = ' checked="checked" ';
        if (ref($settings) eq 'HASH') {
            if ($settings->{'lclocalonly'} eq '1') {
                $domlocalon = $domlocaloff;
                $domlocaloff = ' ';
            }
            if ($settings->{'lcavailable'} eq '0') {
                $domsrchoff = $domsrchon;
                $domsrchon = ' ';
            }
        }
        $datatable='<tr class="LC_odd_row">'.
                      '<td colspan="2"><span class ="LC_nobreak">'.&mt('LON-CAPA directory search available?').'</span></td>'.
                      '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                      '<input type="radio" name="dirsrch_domavailable"'.
                      $domsrchon.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                      '<label><input type="radio" name="dirsrch_domavailable"'.
                      $domsrchoff.' value="0" />'.&mt('No').'</label></span></td>'.
                      '</tr><tr>'.
                      '<td colspan="2"><span class ="LC_nobreak">'.&mt('Other domains can search LON-CAPA domain?').'</span></td>'.
                      '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                      '<input type="radio" name="dirsrch_domlocalonly"'.
                      $domlocaloff.' value="0" />'.&mt('Yes').'</label>&nbsp;'.
                      '<label><input type="radio" name="dirsrch_domlocalonly"'.
                      $domlocalon.' value="1" />'.&mt('No').'</label></span></td>'.
                      '</tr>';
        $$rowtotal += 2;
    }
    return $datatable;
}

sub print_contacts {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $datatable;
    my @contacts = ('adminemail','supportemail');
    my (%checked,%to,%otheremails,%bccemails,%includestr,%includeloc,%currfield,
        $maxsize,$fields,$fieldtitles,$fieldoptions,$possoptions,@mailings,%lonstatus);
    if ($position eq 'top') {
        if (ref($settings) eq 'HASH') {
            foreach my $item (@contacts) {
                if (exists($settings->{$item})) {
                    $to{$item} = $settings->{$item};
                }
            }
        }
    } elsif ($position eq 'middle') {
        @mailings = ('errormail','packagesmail','lonstatusmail','requestsmail',
                     'updatesmail','idconflictsmail','hostipmail');
        foreach my $type (@mailings) {
            $otheremails{$type} = '';
        }
    } elsif ($position eq 'lower') {
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'lonstatus'}) eq 'HASH') {
                %lonstatus = %{$settings->{'lonstatus'}};
            }
        }
    } else {
        @mailings = ('helpdeskmail','otherdomsmail');
        foreach my $type (@mailings) {
            $otheremails{$type} = '';
        }
        $bccemails{'helpdeskmail'} = '';
        $bccemails{'otherdomsmail'} = '';
        $includestr{'helpdeskmail'} = '';
        $includestr{'otherdomsmail'} = '';
        ($fields,$fieldtitles,$fieldoptions,$possoptions) = &helpform_fields();
    }
    if (ref($settings) eq 'HASH') {
        unless (($position eq 'top') || ($position eq 'lower')) {
            foreach my $type (@mailings) {
                if (exists($settings->{$type})) {
                    if (ref($settings->{$type}) eq 'HASH') {
                        foreach my $item (@contacts) {
                            if ($settings->{$type}{$item}) {
                                $checked{$type}{$item} = ' checked="checked" ';
                            }
                        }
                        $otheremails{$type} = $settings->{$type}{'others'};
                        if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                            $bccemails{$type} = $settings->{$type}{'bcc'};
                            if ($settings->{$type}{'include'} ne '') {
                                ($includeloc{$type},$includestr{$type}) = split(/:/,$settings->{$type}{'include'},2);
                                $includestr{$type} = &unescape($includestr{$type});
                            }
                        }
                    }
                } elsif ($type eq 'lonstatusmail') {
                    $checked{'lonstatusmail'}{'adminemail'} = ' checked="checked" ';
                }
            }
        }
        if ($position eq 'bottom') {
            foreach my $type (@mailings) {
                $bccemails{$type} = $settings->{$type}{'bcc'};
                if ($settings->{$type}{'include'} ne '') {
                    ($includeloc{$type},$includestr{$type}) = split(/:/,$settings->{$type}{'include'},2);
                    $includestr{$type} = &unescape($includestr{$type});
                }
            }
            if (ref($settings->{'helpform'}) eq 'HASH') {
                if (ref($fields) eq 'ARRAY') {
                    foreach my $field (@{$fields}) {
                        $currfield{$field} = $settings->{'helpform'}{$field};
                    }
                }
                if (exists($settings->{'helpform'}{'maxsize'})) {
                    $maxsize = $settings->{'helpform'}{'maxsize'};
                } else {
                    $maxsize = '1.0';
                }
            } else {
                if (ref($fields) eq 'ARRAY') {
                    foreach my $field (@{$fields}) {
                        $currfield{$field} = 'yes';
                    }
                }
                $maxsize = '1.0';
            }
        }
    } else {
        if ($position eq 'top') {
            $to{'supportemail'} = $Apache::lonnet::perlvar{'lonSupportEMail'};
            $to{'adminemail'} = $Apache::lonnet::perlvar{'lonAdmEMail'};
            $checked{'errormail'}{'adminemail'} = ' checked="checked" ';
            $checked{'packagesmail'}{'adminemail'} = ' checked="checked" ';
            $checked{'lonstatusmail'}{'adminemail'} = ' checked="checked" ';
            $checked{'requestsmail'}{'adminemail'} = ' checked="checked" ';
            $checked{'updatesmail'}{'adminemail'} = ' checked="checked" ';
            $checked{'idconflictsmail'}{'adminemail'} = ' checked="checked" ';
            $checked{'hostipmail'}{'adminemail'} = ' checked="checked" ';
        } elsif ($position eq 'bottom') {
            $checked{'helpdeskmail'}{'supportemail'} = ' checked="checked" ';
            $checked{'otherdomsmail'}{'supportemail'} = ' checked="checked" ';
            if (ref($fields) eq 'ARRAY') {
                foreach my $field (@{$fields}) {
                    $currfield{$field} = 'yes';
                }
            }
            $maxsize = '1.0';
        }
    }
    my ($titles,$short_titles) = &contact_titles();
    my $rownum = 0;
    my $css_class;
    if ($position eq 'top') {
        foreach my $item (@contacts) {
            $css_class = $rownum%2?' class="LC_odd_row"':'';
            $datatable .= '<tr'.$css_class.'>'. 
                          '<td><span class="LC_nobreak">'.$titles->{$item}.
                          '</span></td><td class="LC_right_item">'.
                          '<input type="text" name="'.$item.'" value="'.
                          $to{$item}.'" /></td></tr>';
            $rownum ++;
        }
    } elsif ($position eq 'bottom') {
        $css_class = $rownum%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'>'.
                      '<td>'.&mt('Extra helpdesk form fields:').'<br />'.
                      &mt('(e-mail, subject, and description always shown)').
                      '</td><td class="LC_left_item">';
        if ((ref($fields) eq 'ARRAY') && (ref($fieldtitles) eq 'HASH') &&
            (ref($fieldoptions) eq 'HASH') && (ref($possoptions) eq 'HASH')) {
            $datatable .= '<table><tr><th>'.&mt('Field').'</th><th>'.&mt('Status').'</th></tr>';
            foreach my $field (@{$fields}) {
                $datatable .= '<tr><td>'.$fieldtitles->{$field};
                if (($field eq 'screenshot') || ($field eq 'cc')) {
                    $datatable .= ' '.&mt('(logged-in users)');
                }
                $datatable .='</td><td>';
                my $clickaction;
                if ($field eq 'screenshot') {
                    $clickaction = ' onclick="screenshotSize(this);"';
                }
                if (ref($possoptions->{$field}) eq 'ARRAY') {
                    foreach my $option (@{$possoptions->{$field}}) {
                        my $checked;
                        if ($currfield{$field} eq $option) {
                            $checked = ' checked="checked"';
                        }
                        $datatable .= '<span class="LC_nobreak"><label>'.
                                      '<input type="radio" name="helpform_'.$field.'" '.
                                      'value="'.$option.'"'.$checked.$clickaction.' />'.$fieldoptions->{$option}.
                                      '</label></span>'.('&nbsp;'x2);
                    }
                }
                if ($field eq 'screenshot') {
                    my $display;
                    if ($currfield{$field} eq 'no') {
                        $display = ' style="display:none"';
                    }
                    $datatable .= '</td></tr><tr id="help_screenshotsize"'.$display.'>'.
                                  '<td>'.&mt('Maximum size for upload (MB)').'</td><td>'.
                                  '<input type="text" size="5" name="helpform_maxsize" value="'.$maxsize.'" />';
                }
                $datatable .= '</td></tr>';
            }
            $datatable .= '</table>';
        }
        $datatable .= '</td></tr>'."\n";
        $rownum ++;
    }
    unless (($position eq 'top') || ($position eq 'lower')) {
        foreach my $type (@mailings) {
            $css_class = $rownum%2?' class="LC_odd_row"':'';
            $datatable .= '<tr'.$css_class.'>'.
                          '<td><span class="LC_nobreak">'.
                          $titles->{$type}.': </span></td>'.
                          '<td class="LC_left_item">';
            if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                $datatable .= '<fieldset><legend>'.&mt('E-mail recipient(s)').'</legend>';
            }
            $datatable .= '<span class="LC_nobreak">';
            foreach my $item (@contacts) {
                $datatable .= '<label>'.
                              '<input type="checkbox" name="'.$type.'"'.
                              $checked{$type}{$item}.
                              ' value="'.$item.'" />'.$short_titles->{$item}.
                              '</label>&nbsp;';
            }
            $datatable .= '</span><br />'.&mt('Others').':&nbsp;&nbsp;'.
                          '<input type="text" name="'.$type.'_others" '.
                          'value="'.$otheremails{$type}.'"  />';
            my %locchecked;
            if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                foreach my $loc ('s','b') {
                    if ($includeloc{$type} eq $loc) {
                        $locchecked{$loc} = ' checked="checked"';
                        last;
                    }
                }
                $datatable .= '<br />'.&mt('Bcc:').('&nbsp;'x6).
                              '<input type="text" name="'.$type.'_bcc" '.
                              'value="'.$bccemails{$type}.'"  /></fieldset>'.
                              '<fieldset><legend>'.&mt('Optional added text').'</legend>'.
                              &mt('Text automatically added to e-mail:').' '.
                              '<input type="text" name="'.$type.'_includestr" value="'.$includestr{$type}.'" /><br />'.
                              '<span class="LC_nobreak">'.&mt('Location:').'&nbsp;'.
                              '<label><input type="radio" name="'.$type.'_includeloc" value="s"'.$locchecked{'s'}.' />'.&mt('in subject').'</label>'.
                              ('&nbsp;'x2).
                              '<label><input type="radio" name="'.$type.'_includeloc" value="b"'.$locchecked{'b'}.' />'.&mt('in body').'</label>'.
                              '</span></fieldset>';
            }
            $datatable .= '</td></tr>'."\n";
            $rownum ++;
        }
    }
    if ($position eq 'middle') {
        my %choices;
        my $corelink = &core_link_msu();
        $choices{'reporterrors'} = &mt('E-mail error reports to [_1]',$corelink);
        $choices{'reportupdates'} = &mt('E-mail record of completed LON-CAPA updates to [_1]',
                                        $corelink);
        $choices{'reportstatus'} = &mt('E-mail status if errors above threshold to [_1]',$corelink);
        my @toggles = ('reporterrors','reportupdates','reportstatus');
        my %defaultchecked = ('reporterrors'  => 'on',
                              'reportupdates' => 'on',
                              'reportstatus'  => 'on');
        (my $reports,$rownum) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
                                                   \%choices,$rownum);
        $datatable .= $reports;
    } elsif ($position eq 'lower') {
        my (%current,%excluded,%weights);
        my ($defaults,$names) = &Apache::loncommon::lon_status_items();
        if ($lonstatus{'threshold'} =~ /^\d+$/) {
            $current{'errorthreshold'} = $lonstatus{'threshold'};
        } else {
            $current{'errorthreshold'} = $defaults->{'threshold'};
        }
        if ($lonstatus{'sysmail'} =~ /^\d+$/) {
            $current{'errorsysmail'} = $lonstatus{'sysmail'};
        } else {
            $current{'errorsysmail'} = $defaults->{'sysmail'};
        }
        if (ref($lonstatus{'weights'}) eq 'HASH') {
            foreach my $type ('E','W','N','U') {
                if ($lonstatus{'weights'}{$type} =~ /^\d+$/) {
                    $weights{$type} = $lonstatus{'weights'}{$type};
                } else {
                    $weights{$type} = $defaults->{$type};
                }
            }
        } else {
            foreach my $type ('E','W','N','U') {
                $weights{$type} = $defaults->{$type};
            }
        }
        if (ref($lonstatus{'excluded'}) eq 'ARRAY') {
            if (@{$lonstatus{'excluded'}} > 0) {
                map {$excluded{$_} = 1; } @{$lonstatus{'excluded'}};
            }
        }
        foreach my $item ('errorthreshold','errorsysmail') { 
            $css_class = $rownum%2?' class="LC_odd_row"':'';
            $datatable .= '<tr'.$css_class.'>'.
                          '<td class="LC_left_item"><span class="LC_nobreak">'.
                          $titles->{$item}.
                          '</span></td><td class="LC_left_item">'.
                          '<input type="text" name="'.$item.'" value="'.
                          $current{$item}.'" size="5" /></td></tr>';
            $rownum ++;
        }
        $css_class = $rownum%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'>'.
                      '<td class="LC_left_item">'.
                      '<span class="LC_nobreak">'.$titles->{'errorweights'}.
                      '</span></td><td class="LC_left_item"><table><tr>';
        foreach my $type ('E','W','N','U') {
            $datatable .= '<td>'.$names->{$type}.'<br />'.
                          '<input type="text" name="errorweights_'.$type.'" value="'.
                          $weights{$type}.'" size="5" /></td>';
        }
        $datatable .= '</tr></table></tr>';
        $rownum ++;
        $css_class = $rownum%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td class="LC_left_item">'.
                      $titles->{'errorexcluded'}.'</td>'.
                      '<td class="LC_left_item"><table>';
        my $numinrow = 4;
        my @ids = sort(values(%Apache::lonnet::serverhomeIDs));
        for (my $i=0; $i<@ids; $i++) {
            my $rem = $i%($numinrow);
            if ($rem == 0) {
                if ($i > 0) {
                    $datatable .= '</tr>';
                }
                $datatable .= '<tr>';
            }
            my $check;
            if ($excluded{$ids[$i]}) {
                $check = ' checked="checked" ';
            }
            $datatable .= '<td class="LC_left_item">'.
                          '<span class="LC_nobreak"><label>'.
                          '<input type="checkbox" name="errorexcluded" '.
                          'value="'.$ids[$i].'"'.$check.' />'.
                          $ids[$i].'</label></span></td>';
        }
        my $colsleft = $numinrow - @ids%($numinrow);
        if ($colsleft > 1 ) {
            $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                          '&nbsp;</td>';
        } elsif ($colsleft == 1) {
            $datatable .= '<td class="LC_left_item">&nbsp;</td>';
        }
        $datatable .= '</tr></table></td></tr>';
        $rownum ++;
    } elsif ($position eq 'bottom') {
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        my (@posstypes,%usertypeshash);
        if (ref($types) eq 'ARRAY') {
            @posstypes = @{$types};
        }
        if (@posstypes) {
            if (ref($usertypes) eq 'HASH') {
                %usertypeshash = %{$usertypes};
            }
            my @overridden;
            my $numinrow = 4;
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{'overrides'}) eq 'HASH') {
                    foreach my $key (sort(keys(%{$settings->{'overrides'}}))) {
                        if (ref($settings->{'overrides'}{$key}) eq 'HASH') {
                            push(@overridden,$key);
                            foreach my $item (@contacts) {
                                if ($settings->{'overrides'}{$key}{$item}) {
                                    $checked{'override_'.$key}{$item} = ' checked="checked" ';
                                }
                            }
                            $otheremails{'override_'.$key} = $settings->{'overrides'}{$key}{'others'};
                            $bccemails{'override_'.$key} = $settings->{'overrides'}{$key}{'bcc'};
                            $includeloc{'override_'.$key} = '';
                            $includestr{'override_'.$key} = '';
                            if ($settings->{'overrides'}{$key}{'include'} ne '') {
                                ($includeloc{'override_'.$key},$includestr{'override_'.$key}) = 
                                    split(/:/,$settings->{'overrides'}{$key}{'include'},2);
                                $includestr{'override_'.$key} = &unescape($includestr{'override_'.$key});
                            }
                        }
                    }
                }
            }
            my $customclass = 'LC_helpdesk_override';
            my $optionsprefix = 'LC_options_helpdesk_';

            my $onclicktypes = "toggleHelpdeskRow(this.form,'overrides','$customclass','$optionsprefix');";
 
            $datatable .= &insttypes_row($settings,$types,$usertypes,$dom,
                                         $numinrow,$othertitle,'overrides',
                                         \$rownum,$onclicktypes,$customclass);
            $rownum ++;
            $usertypeshash{'default'} = $othertitle;
            foreach my $status (@posstypes) {
                my $css_class;
                if ($rownum%2) {
                    $css_class = 'LC_odd_row ';
                }
                $css_class .= $customclass;
                my $rowid = $optionsprefix.$status;
                my $hidden = 1;
                my $currstyle = 'display:none';
                if (grep(/^\Q$status\E$/,@overridden)) {
                    $currstyle = 'display:table-row';
                    $hidden = 0;
                }
                my $key = 'override_'.$status;
                $datatable .= &overridden_helpdesk($checked{$key},$otheremails{$key},$bccemails{$key},
                                                  $includeloc{$key},$includestr{$key},$status,$rowid,
                                                  $usertypeshash{$status},$css_class,$currstyle,
                                                  \@contacts,$short_titles);
                unless ($hidden) {
                    $rownum ++;
                }
            }
        }
    }
    $$rowtotal += $rownum;
    return $datatable;
}

sub core_link_msu {
    return &Apache::loncommon::modal_link('http://loncapa.org/core.html',
                                          &mt('LON-CAPA core group - MSU'),600,500);
}

sub overridden_helpdesk {
    my ($checked,$otheremails,$bccemails,$includeloc,$includestr,$type,$rowid,
        $typetitle,$css_class,$rowstyle,$contacts,$short_titles) = @_;
    my $class = 'LC_left_item';
    if ($css_class) {
        $css_class = ' class="'.$css_class.'"';
    }
    if ($rowid) {
        $rowid = ' id="'.$rowid.'"';
    }
    if ($rowstyle) {
        $rowstyle = ' style="'.$rowstyle.'"';
    }
    my ($output,$description);
    $description = &mt('Helpdesk requests from: [_1] in this domain (overrides default)',"<b>$typetitle</b>");
    $output = '<tr'.$css_class.$rowid.$rowstyle.'>'.
              "<td>$description</td>\n".
              '<td class="'.$class.'" colspan="2">'.
              '<fieldset><legend>'.&mt('E-mail recipient(s)').'</legend>'.
              '<span class="LC_nobreak">';
    if (ref($contacts) eq 'ARRAY') {
        foreach my $item (@{$contacts}) {
            my $check;
            if (ref($checked) eq 'HASH') {
               $check = $checked->{$item};
            }
            my $title;
            if (ref($short_titles) eq 'HASH') {
                $title = $short_titles->{$item}; 
            }
            $output .= '<label>'.
                       '<input type="checkbox" name="override_'.$type.'"'.$check.
                       ' value="'.$item.'" />'.$title.'</label>&nbsp;';
        }
    }
    $output .= '</span><br />'.&mt('Others').':&nbsp;&nbsp;'.
               '<input type="text" name="override_'.$type.'_others" '.
               'value="'.$otheremails.'"  />';
    my %locchecked;
    foreach my $loc ('s','b') {
        if ($includeloc eq $loc) {
            $locchecked{$loc} = ' checked="checked"';
            last;
        }
    }
    $output .= '<br />'.&mt('Bcc:').('&nbsp;'x6).
               '<input type="text" name="override_'.$type.'_bcc" '.
               'value="'.$bccemails.'"  /></fieldset>'.
               '<fieldset><legend>'.&mt('Optional added text').'</legend>'.
               &mt('Text automatically added to e-mail:').' '.
               '<input type="text" name="override_'.$type.'_includestr" value="'.$includestr.'" /><br />'.
               '<span class="LC_nobreak">'.&mt('Location:').'&nbsp;'.
               '<label><input type="radio" name="override_'.$type.'_includeloc" value="s"'.$locchecked{'s'}.' />'.&mt('in subject').'</label>'.
               ('&nbsp;'x2).
               '<label><input type="radio" name="override_'.$type.'_includeloc" value="b"'.$locchecked{'b'}.' />'.&mt('in body').'</label>'.
               '</span></fieldset>'.
               '</td></tr>'."\n";
    return $output;
}

sub contacts_javascript {
    return <<"ENDSCRIPT";

<script type="text/javascript">
// <![CDATA[

function screenshotSize(field) {
    if (document.getElementById('help_screenshotsize')) {
        if (field.value == 'no') {
            document.getElementById('help_screenshotsize').style.display="none";
        } else {
            document.getElementById('help_screenshotsize').style.display="";
        }
    }
    return;
}

function toggleHelpdeskRow(form,checkbox,target,prefix,docount) {
    if (form.elements[checkbox].length != undefined) {
        var count = 0;
        if (docount) {
            for (var i=0; i<form.elements[checkbox].length; i++) {
                if (form.elements[checkbox][i].checked) {
                    count ++;
                }
            }
        }
        for (var i=0; i<form.elements[checkbox].length; i++) {
            var type = form.elements[checkbox][i].value;
            if (document.getElementById(prefix+type)) {
                if (form.elements[checkbox][i].checked) {
                    document.getElementById(prefix+type).style.display = 'table-row';
                    if (count % 2 == 1) {
                        document.getElementById(prefix+type).className = target+' LC_odd_row';
                    } else {
                        document.getElementById(prefix+type).className = target;
                    }
                    count ++;
                } else {
                    document.getElementById(prefix+type).style.display = 'none';
                }
            }
        }
    }
    return;
}


// ]]>
</script>

ENDSCRIPT
}

sub print_helpsettings {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $confname = $dom.'-domainconfig';
    my $formname = 'display';
    my ($datatable,$itemcount);
    if ($position eq 'top') {
        $itemcount = 1;
        my (%choices,%defaultchecked,@toggles);
        $choices{'submitbugs'} = &mt('Display link to: [_1]?',
                                     &Apache::loncommon::modal_link('http://bugs.loncapa.org',
                                     &mt('LON-CAPA bug tracker'),600,500));
        %defaultchecked = ('submitbugs' => 'on');
        @toggles = ('submitbugs');
        ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
                                                     \%choices,$itemcount);
        $$rowtotal ++;
    } else {
        my $css_class;
        my %existing=&Apache::lonnet::dump('roles',$dom,$confname,'rolesdef_');
        my (%customroles,%ordered,%current);
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'adhoc'}) eq 'HASH') {
                %current = %{$settings->{'adhoc'}};
            }
        }
        my $count = 0;
        foreach my $key (sort(keys(%existing))) {
            if ($key=~/^rolesdef\_(\w+)$/) {
                my $rolename = $1;
                my (%privs,$order);
                ($privs{'system'},$privs{'domain'},$privs{'course'}) = split(/\_/,$existing{$key});
                $customroles{$rolename} = \%privs;
                if (ref($current{$rolename}) eq 'HASH') {
                    $order = $current{$rolename}{'order'};
                }
                if ($order eq '') {
                    $order = $count;
                }
                $ordered{$order} = $rolename;
                $count++;
            }
        }
        my $maxnum = scalar(keys(%ordered));
        my @roles_by_num = ();
        foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
            push(@roles_by_num,$item);
        }
        my $context = 'domprefs';
        my $crstype = 'Course';
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        my @accesstypes = ('all','dh','da','none');
        my ($numstatustypes,@jsarray);
        if (ref($types) eq 'ARRAY') {
            if (@{$types} > 0) {
                $numstatustypes = scalar(@{$types});
                push(@accesstypes,'status');
                @jsarray = ('bystatus');
            }
        }
        my %domhelpdesk = &Apache::lonnet::get_active_domroles($dom,['dh','da']);
        if (keys(%domhelpdesk)) {
            push(@accesstypes,('inc','exc'));
            push(@jsarray,('notinc','notexc'));
        }
        my $hiddenstr = join("','",@jsarray);
        my $context = 'domprefs';
        my $crstype = 'Course';
        my $prefix = 'helproles_';
        my $add_class = 'LC_hidden';
        foreach my $num (@roles_by_num) {
            my $role = $ordered{$num};
            my ($desc,$access,@statuses);
            if (ref($current{$role}) eq 'HASH') {
                $desc = $current{$role}{'desc'};
                $access = $current{$role}{'access'};
                if (ref($current{$role}{'insttypes'}) eq 'ARRAY') {
                    @statuses = @{$current{$role}{'insttypes'}};
                }
            }
            if ($desc eq '') {
                $desc = $role;
            }
            my $identifier = 'custhelp'.$num;
            my %full=();
            my %levels= (
                         course => {},
                         domain => {},
                         system => {},
                        );
            my %levelscurrent=(
                               course => {},
                               domain => {},
                               system => {},
                              );
            &Apache::lonuserutils::custom_role_privs($customroles{$role},\%full,\%levels,\%levelscurrent);
            my @templateroles = &Apache::lonuserutils::custom_template_roles($context,$crstype);
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            my $chgstr = ' onchange="javascript:reorderHelpRoles(this.form,'."'helproles_".$num."_pos'".');"';
            $datatable .= '<tr '.$css_class.'><td style="vertical-align: top"><b>'.$role.'</b><br />'.
                          '<select name="helproles_'.$num.'_pos"'.$chgstr.'>';
            for (my $k=0; $k<=$maxnum; $k++) {
                my $vpos = $k+1;
                my $selstr;
                if ($k == $num) {
                    $selstr = ' selected="selected" ';
                }
                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
            }
            $datatable .= '</select>'.('&nbsp;'x2).
                          '<input type="hidden" name="helproles_'.$num.'" value="'.$role.'" />'.
                          '</td>'.
                          '<td><fieldset><legend>'.&mt('Role name').'</legend>'.
                          &mt('Name shown to users:').
                          '<input type="text" name="helproles_'.$num.'_desc" value="'.$desc.'" />'.
                          '</fieldset>'.
                          &helpdeskroles_access($dom,$prefix,$num,$add_class,$current{$role},\@accesstypes,
                                                $othertitle,$usertypes,$types,\%domhelpdesk).
                          '<fieldset>'.
                          '<legend>'.&mt('Role privileges').&adhocbutton($prefix,$num,'privs','show').'</legend>'.
                          &Apache::lonuserutils::custom_role_table($crstype,\%full,\%levels,
                                                                   \%levelscurrent,$identifier,
                                                                   'LC_hidden',$prefix.$num.'_privs').
                          '</fieldset></td>';
            $itemcount ++;
        }
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        my $newcust = 'custhelp'.$count;
        my (%privs,%levelscurrent);
        my %full=();
        my %levels= (
                     course => {},
                     domain => {},
                     system => {},
                    );
        &Apache::lonuserutils::custom_role_privs(\%privs,\%full,\%levels,\%levelscurrent);
        my @templateroles = &Apache::lonuserutils::custom_template_roles($context,$crstype);
        my $chgstr = ' onchange="javascript:reorderHelpRoles(this.form,'."'helproles_".$count."_pos'".');"';
        $datatable .= '<tr '.$css_class.'><td style="vertical-align: top"><span class="LC_nobreak"><label>'.
                      '<input type="hidden" name="helproles_maxnum" value="'.$maxnum.'" />'."\n".
                      '<select name="helproles_'.$count.'_pos"'.$chgstr.'>';
        for (my $k=0; $k<$maxnum+1; $k++) {
            my $vpos = $k+1;
            my $selstr;
            if ($k == $maxnum) {
                $selstr = ' selected="selected" ';
            }
            $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
        }
        $datatable .= '</select>&nbsp;'."\n".
                      '<input type="checkbox" name="newcusthelp" value="'.$count.'" />'. &mt('Add').
                      '</label></span></td>'.
                      '<td><fieldset><legend>'.&mt('Role name').'</legend>'.
                      '<span class="LC_nobreak">'.
                      &mt('Internal name:').
                      '<input type="text" size="10" name="custhelpname'.$count.'" value="" />'.
                      '</span>'.('&nbsp;'x4).
                      '<span class="LC_nobreak">'.
                      &mt('Name shown to users:').
                      '<input type="text" size="20" name="helproles_'.$count.'_desc" value="" />'.
                      '</span></fieldset>'.
                       &helpdeskroles_access($dom,$prefix,$count,'',undef,\@accesstypes,$othertitle,
                                             $usertypes,$types,\%domhelpdesk).
                      '<fieldset><legend>'.&mt('Role privileges').'</legend>'.
                      &Apache::lonuserutils::custom_role_header($context,$crstype,
                                                                \@templateroles,$newcust).
                      &Apache::lonuserutils::custom_role_table('Course',\%full,\%levels,
                                                               \%levelscurrent,$newcust).
                      '</fieldset>'.
                      &helpsettings_javascript(\@roles_by_num,$maxnum,$hiddenstr,$formname).
                      '</td></tr>';
        $count ++;
        $$rowtotal += $count;
    }
    return $datatable;
}

sub adhocbutton {
    my ($prefix,$num,$field,$visibility) = @_;
    my %lt = &Apache::lonlocal::texthash(
                                          show => 'Show details',
                                          hide => 'Hide details',
                                        );
    return '<span style="text-decoration:line-through; font-weight: normal;">'.('&nbsp;'x10).
           '</span>'.('&nbsp;'x2).'<input type="button" id="'.$prefix.$num.'_'.$field.'_vis"'.
           ' value="'.$lt{$visibility}.'" style="height:20px;" '.
           'onclick="toggleHelpdeskItem('."'$num','$field'".');" />'.('&nbsp;'x2);
}

sub helpsettings_javascript {
    my ($roles_by_num,$total,$hiddenstr,$formname) = @_;
    return unless(ref($roles_by_num) eq 'ARRAY');
    my %html_js_lt = &Apache::lonlocal::texthash(
                                          show => 'Show details',
                                          hide => 'Hide details',
                                        );
    &html_escape(\%html_js_lt);
    my $jstext = '    var helproles = Array('."'".join("','",@{$roles_by_num})."'".');'."\n";
    return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[

function reorderHelpRoles(form,item) {
    var changedVal;
$jstext
    var newpos = 'helproles_${total}_pos';
    var maxh = 1 + $total;
    var current = new Array();
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    if (item == newpos) {
        changedVal = newitemVal;
    } else {
        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    for (var i=0; i<helproles.length; i++) {
        var elementName = 'helproles_'+helproles[i]+'_pos';
        if (elementName != item) {
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}

function helpdeskAccess(num) {
    var curraccess = null;
    if (document.$formname.elements['helproles_'+num+'_access'].length) {
        for (var i=0; i<document.$formname.elements['helproles_'+num+'_access'].length; i++) {
            if (document.$formname.elements['helproles_'+num+'_access'][i].checked) {
                curraccess = document.$formname.elements['helproles_'+num+'_access'][i].value;
            }
        }
    }
    var shown = Array();
    var hidden = Array();
    if (curraccess == 'none') {
        hidden = Array('$hiddenstr');
    } else {
        if (curraccess == 'status') {
            shown = Array('bystatus');
            hidden = Array('notinc','notexc');
        } else {
            if (curraccess == 'exc') {
                shown = Array('notexc');
                hidden = Array('notinc','bystatus');
            }
            if (curraccess == 'inc') {
                shown = Array('notinc');
                hidden = Array('notexc','bystatus');
            }
            if ((curraccess == 'all') || (curraccess == 'dh') || (curraccess == 'da')) {
                hidden = Array('notinc','notexc','bystatus');
            }
        }
    }
    if (hidden.length > 0) {
        for (var i=0; i<hidden.length; i++) {
            if (document.getElementById('helproles_'+num+'_'+hidden[i])) {
                document.getElementById('helproles_'+num+'_'+hidden[i]).style.display = 'none';
            }
        }
    }
    if (shown.length > 0) {
        for (var i=0; i<shown.length; i++) {
            if (document.getElementById('helproles_'+num+'_'+shown[i])) {
                if (shown[i] == 'privs') {
                    document.getElementById('helproles_'+num+'_'+shown[i]).style.display = 'block';
                } else {
                    document.getElementById('helproles_'+num+'_'+shown[i]).style.display = 'inline-block';
                }
            }
        }
    }
    return;
}

function toggleHelpdeskItem(num,field) {
    if (document.getElementById('helproles_'+num+'_'+field)) {
        if (document.getElementById('helproles_'+num+'_'+field).className.match(/(?:^|\\s)LC_hidden(?!\\S)/)) {
            document.getElementById('helproles_'+num+'_'+field).className =
                document.getElementById('helproles_'+num+'_'+field).className.replace(/(?:^|\\s)LC_hidden(?!\\S)/g ,'');
            if (document.getElementById('helproles_'+num+'_'+field+'_vis')) {
                document.getElementById('helproles_'+num+'_'+field+'_vis').value = '$html_js_lt{hide}';
            }
        } else {
            document.getElementById('helproles_'+num+'_'+field).className += ' LC_hidden';
            if (document.getElementById('helproles_'+num+'_'+field+'_vis')) {
                document.getElementById('helproles_'+num+'_'+field+'_vis').value = '$html_js_lt{show}';
            }
        }
    }
    return;
}

// ]]>
</script>

ENDSCRIPT
}

sub helpdeskroles_access {
    my ($dom,$prefix,$num,$add_class,$current,$accesstypes,$othertitle,
        $usertypes,$types,$domhelpdesk) = @_;
    return unless ((ref($accesstypes) eq 'ARRAY') && (ref($domhelpdesk) eq 'HASH'));
    my %lt = &Apache::lonlocal::texthash(
                    'rou'    => 'Role usage',
                    'whi'    => 'Which helpdesk personnel may use this role?',
                    'all'    => 'All with domain helpdesk or helpdesk assistant role',
                    'dh'     => 'All with domain helpdesk role',
                    'da'     => 'All with domain helpdesk assistant role',
                    'none'   => 'None',
                    'status' => 'Determined based on institutional status',
                    'inc'    => 'Include all, but exclude specific personnel',
                    'exc'    => 'Exclude all, but include specific personnel',
                  );
    my %usecheck = (
                     all => ' checked="checked"',
                   );
    my %displaydiv = (
                      status => 'none',
                      inc    => 'none',
                      exc    => 'none',
                      priv   => 'block',
                     );
    my $output;
    if (ref($current) eq 'HASH') {
        if (($current->{'access'} ne '') && ($current->{'access'} ne 'all')) {
            if (grep(/^\Q$current->{access}\E$/,@{$accesstypes})) {
                $usecheck{$current->{access}} = $usecheck{'all'};
                delete($usecheck{'all'});
                if ($current->{access} =~ /^(status|inc|exc)$/) {
                    my $access = $1;
                    $displaydiv{$access} = 'inline';
                } elsif ($current->{access} eq 'none') {
                    $displaydiv{'priv'} = 'none';
                }
            }
        }
    }
    $output = '<fieldset id="'.$prefix.$num.'_usage"><legend>'.$lt{'rou'}.'</legend>'.
              '<p>'.$lt{'whi'}.'</p>';
    foreach my $access (@{$accesstypes}) {
        $output .= '<p><label><input type="radio" name="'.$prefix.$num.'_access" value="'.$access.'" '.$usecheck{$access}.
                   ' onclick="helpdeskAccess('."'$num'".');" />'.
                   $lt{$access}.'</label>';
        if ($access eq 'status') {
            $output .= '<div id="'.$prefix.$num.'_bystatus" style="display:'.$displaydiv{$access}.'">'.
                       &Apache::lonuserutils::adhoc_status_types($dom,$prefix,$num,$current->{$access},
                                                                 $othertitle,$usertypes,$types).
                       '</div>';
        } elsif (($access eq 'inc') && (keys(%{$domhelpdesk}) > 0)) {
            $output .= '<div id="'.$prefix.$num.'_notinc" style="display:'.$displaydiv{$access}.'">'.
                       &Apache::lonuserutils::adhoc_staff($access,$prefix,$num,$current->{$access},$domhelpdesk).
                       '</div>';
        } elsif (($access eq 'exc') && (keys(%{$domhelpdesk}) > 0)) {
            $output .= '<div id="'.$prefix.$num.'_notexc" style="display:'.$displaydiv{$access}.'">'.
                       &Apache::lonuserutils::adhoc_staff($access,$prefix,$num,$current->{$access},$domhelpdesk).
                       '</div>';
        }
        $output .= '</p>';
    }
    $output .= '</fieldset>';
    return $output;
}

sub radiobutton_prefs {
    my ($settings,$toggles,$defaultchecked,$choices,$itemcount,$onclick,
        $additional,$align,$firstval) = @_;
    return unless ((ref($toggles) eq 'ARRAY') && (ref($defaultchecked) eq 'HASH') &&
                   (ref($choices) eq 'HASH'));

    my (%checkedon,%checkedoff,$datatable,$css_class);

    foreach my $item (@{$toggles}) {
        if ($defaultchecked->{$item} eq 'on') {
            $checkedon{$item} = ' checked="checked" ';
            $checkedoff{$item} = ' ';
        } elsif ($defaultchecked->{$item} eq 'off') {
            $checkedoff{$item} = ' checked="checked" ';
            $checkedon{$item} = ' ';
        }
    }
    if (ref($settings) eq 'HASH') {
        foreach my $item (@{$toggles}) {
            if ($settings->{$item} eq '1') {
                $checkedon{$item} =  ' checked="checked" ';
                $checkedoff{$item} = ' ';
            } elsif ($settings->{$item} eq '0') {
                $checkedoff{$item} =  ' checked="checked" ';
                $checkedon{$item} = ' ';
            }
        }
    }
    if ($onclick) {
        $onclick = ' onclick="'.$onclick.'"';
    }
    foreach my $item (@{$toggles}) {
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .=
            '<tr'.$css_class.'><td style="vertical-align: top">'.
            '<span class="LC_nobreak">'.$choices->{$item}.
            '</span></td>';
        if ($align eq 'left') {
            $datatable .= '<td class="LC_left_item">';
        } else {
            $datatable .= '<td class="LC_right_item">';
        }
        $datatable .= '<span class="LC_nobreak">';
        if ($firstval eq 'no') {
            $datatable .=
                '<label><input type="radio" name="'.
                $item.'" '.$checkedoff{$item}.' value="0"'.$onclick.' />'.&mt('No').
                '</label>&nbsp;<label><input type="radio" name="'.$item.'" '.
                $checkedon{$item}.' value="1"'.$onclick.' />'.&mt('Yes').'</label>';
        } else {
            $datatable .=
                '<label><input type="radio" name="'.
                $item.'" '.$checkedon{$item}.' value="1"'.$onclick.' />'.&mt('Yes').
                '</label>&nbsp;<label><input type="radio" name="'.$item.'" '.
                $checkedoff{$item}.' value="0"'.$onclick.' />'.&mt('No').'</label>';
        }
        $datatable .= '</span>'.$additional.'</td></tr>';
        $itemcount ++;
    }
    return ($datatable,$itemcount);
}

sub print_ltitools {
    my ($dom,$settings,$rowtotal) = @_;
    my $rownum = 0;
    my $css_class;
    my $itemcount = 1;
    my $maxnum = 0;
    my %ordered;
    if (ref($settings) eq 'HASH') {
        foreach my $item (keys(%{$settings})) {
            if (ref($settings->{$item}) eq 'HASH') {
                my $num = $settings->{$item}{'order'};
                $ordered{$num} = $item;
            }
        }
    }
    my $confname = $dom.'-domainconfig';
    my $switchserver = &check_switchserver($dom,$confname);
    my $maxnum = scalar(keys(%ordered));
    my $datatable;
    my %lt = &ltitools_names();
    my @courseroles = ('cc','in','ta','ep','st');
    my @ltiroles = qw(Instructor ContentDeveloper TeachingAssistant Learner);
    my @fields = ('fullname','firstname','lastname','email','roles','user');
    if (keys(%ordered)) {
        my @items = sort { $a <=> $b } keys(%ordered);
        for (my $i=0; $i<@items; $i++) {
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            my $item = $ordered{$items[$i]};
            my ($title,$key,$secret,$url,$lifetime,$imgsrc,%sigsel);
            if (ref($settings->{$item}) eq 'HASH') {
                $title = $settings->{$item}->{'title'};
                $url = $settings->{$item}->{'url'};
                $key = $settings->{$item}->{'key'};
                $secret = $settings->{$item}->{'secret'};
                $lifetime = $settings->{$item}->{'lifetime'};
                my $image = $settings->{$item}->{'image'};
                if ($image ne '') {
                    $imgsrc = '<img src="'.$image.'" alt="'.&mt('Tool Provider icon').'" />';
                }
                if ($settings->{$item}->{'sigmethod'} eq 'HMAC-256') {
                    $sigsel{'HMAC-256'} = ' selected="selected"';
                } else {
                    $sigsel{'HMAC-SHA1'} = ' selected="selected"';
                }
            }
            my $chgstr = ' onchange="javascript:reorderLTITools(this.form,'."'ltitools_".$item."'".');"';
            $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                         .'<select name="ltitools_'.$item.'"'.$chgstr.'>';
            for (my $k=0; $k<=$maxnum; $k++) {
                my $vpos = $k+1;
                my $selstr;
                if ($k == $i) {
                    $selstr = ' selected="selected" ';
                }
                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
            }
            $datatable .= '</select>'.('&nbsp;'x2).
                '<label><input type="checkbox" name="ltitools_del" value="'.$item.'" />'.
                &mt('Delete?').'</label></span></td>'.
                '<td colspan="2">'.
                '<fieldset><legend>'.&mt('Required settings').'</legend>'.
                '<span class="LC_nobreak">'.$lt{'title'}.':<input type="text" size="20" name="ltitools_title_'.$i.'" value="'.$title.'" /></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'version'}.':<select name="ltitools_version_'.$i.'">'.
                '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'msgtype'}.':<select name="ltitools_msgtype_'.$i.'">'.
                '<option value="basic-lti-launch-request" selected="selected">Launch</option></select></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'sigmethod'}.':<select name="ltitools_sigmethod_'.$i.'">'.
                '<option value="HMAC-SHA1"'.$sigsel{'HMAC-SHA1'}.'>HMAC-SHA1</option>'.
                '<option value="HMAC-SHA256"'.$sigsel{'HMAC-SHA256'}.'>HMAC-SHA256</option></select></span>'.
                '<br /><br />'.
                '<span class="LC_nobreak">'.$lt{'url'}.':<input type="text" size="40" name="ltitools_url_'.$i.'"'.
                ' value="'.$url.'" /></span>'.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'key'}.':'.
                '<input type="text" size="25" name="ltitools_key_'.$i.'" value="'.$key.'" /></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'lifetime'}.':'.
                '<input type="text" size="5" name="ltitools_lifetime_'.$i.'" value="'.$lifetime.'" /></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'secret'}.':'.
                '<input type="password" size="20" name="ltitools_secret_'.$i.'" value="'.$secret.'" />'.
                '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.ltitools_secret_'.$i.'.type='."'text'".' } else { this.form.ltitools_secret_'.$i.'.type='."'password'".' }" />'.&mt('Visible input').'</label>'.
                '<input type="hidden" name="ltitools_id_'.$i.'" value="'.$item.'" /></span>'.
                '</fieldset>'.
                '<fieldset><legend>'.&mt('Optional settings').'</legend>'.
                '<span class="LC_nobreak">'.&mt('Display target:');
            my %currdisp;
            if (ref($settings->{$item}->{'display'}) eq 'HASH') {
                if ($settings->{$item}->{'display'}->{'target'} eq 'window') {
                    $currdisp{'window'} = ' checked="checked"';
                } elsif ($settings->{$item}->{'display'}->{'target'} eq 'tab') {
                    $currdisp{'tab'} = ' checked="checked"';
                } else {
                    $currdisp{'iframe'} = ' checked="checked"';
                }
                if ($settings->{$item}->{'display'}->{'width'} =~ /^(\d+)$/) {
                    $currdisp{'width'} = $1;
                }
                if ($settings->{$item}->{'display'}->{'height'} =~ /^(\d+)$/) {
                     $currdisp{'height'} = $1;
                }
                $currdisp{'linktext'} = $settings->{$item}->{'display'}->{'linktext'};
                $currdisp{'explanation'} = $settings->{$item}->{'display'}->{'explanation'};
            } else {
                $currdisp{'iframe'} = ' checked="checked"';
            }
            foreach my $disp ('iframe','tab','window') {
                $datatable .= '<label><input type="radio" name="ltitools_target_'.$i.'" value="'.$disp.'"'.$currdisp{$disp}.' />'.
                              $lt{$disp}.'</label>'.('&nbsp;'x2);
            }
            $datatable .= ('&nbsp;'x4);
            foreach my $dimen ('width','height') {
                $datatable .= '<label>'.$lt{$dimen}.'&nbsp;'.
                              '<input type="text" name="ltitools_'.$dimen.'_'.$i.'" size="5" value="'.$currdisp{$dimen}.'" /></label>'.
                              ('&nbsp;'x2);
            }
            $datatable .= '</span><br />'.
                          '<div class="LC_left_float">'.$lt{'linktext'}.'<br />'.
                          '<input type="text" name="ltitools_linktext_'.$i.'" size="25" value="'.$currdisp{'linktext'}.'" /></div>'.
                          '<div class="LC_left_float">'.$lt{'explanation'}.'<br />'.
                          '<textarea name="ltitools_explanation_'.$i.'" rows="5" cols="40">'.$currdisp{'explanation'}.
                          '</textarea></div><div style=""></div><br />';
            my %units = (
                          'passback' => 'days',
                          'roster'   => 'seconds',
                        );
            foreach my $extra ('passback','roster') {
                my $validsty = 'none';
                my $currvalid;
                my $checkedon = '';
                my $checkedoff = ' checked="checked"';
                if ($settings->{$item}->{$extra}) {
                    $checkedon = $checkedoff;
                    $checkedoff = '';
                    $validsty = 'inline-block';
                    if ($settings->{$item}->{$extra.'valid'} =~ /^\d+\.?\d*$/) {
                        $currvalid = $settings->{$item}->{$extra.'valid'};
                    }
                }
                my $onclick = ' onclick="toggleLTITools(this.form,'."'$extra','$i'".');"';
                $datatable .= '<div class="LC_floatleft"><span class="LC_nobreak">'.$lt{$extra}.'&nbsp;'.
                              '<label><input type="radio" name="ltitools_'.$extra.'_'.$i.'" value="0"'.$checkedoff.$onclick.' />'.
                              &mt('No').'</label>'.('&nbsp;'x2).
                              '<label><input type="radio" name="ltitools_'.$extra.'_'.$i.'" value="1"'.$checkedon.$onclick.' />'.
                              &mt('Yes').'</label></span></div>'.
                              '<div class="LC_floatleft" style="display:'.$validsty.';" id="ltitools_'.$extra.'time_'.$i.'">'.
                              '<span class="LC_nobreak">'.
                              &mt("at least [_1] $units{$extra} after launch",
                                  '<input type="text" name="ltitools_'.$extra.'valid_'.$i.'" value="'.$currvalid.'" />').
                              '</span></div><div style="padding:0;clear:both;margin:0;border:0"></div>';
            }
            $datatable .= '<span class="LC_nobreak">'.$lt{'icon'}.':&nbsp;';
            if ($imgsrc) {
                $datatable .= $imgsrc.
                              '<label><input type="checkbox" name="ltitools_image_del"'.
                              ' value="'.$item.'" />'.&mt('Delete?').'</label></span> '.
                              '<span class="LC_nobreak">&nbsp;'.&mt('Replace:').'&nbsp;';
            } else {
                $datatable .= '('.&mt('if larger than 21x21 pixels, image will be scaled').')&nbsp;';
            }
            if ($switchserver) {
                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
            } else {
                $datatable .= '<input type="file" name="ltitools_image_'.$i.'" value="" />';
            }
            $datatable .= '</span></fieldset>';
            my (%checkedfields,%rolemaps,$userincdom);
            if (ref($settings->{$item}) eq 'HASH') {
                if (ref($settings->{$item}->{'fields'}) eq 'HASH') {
                    %checkedfields = %{$settings->{$item}->{'fields'}};
                }
                $userincdom = $settings->{$item}->{'incdom'};
                if (ref($settings->{$item}->{'roles'}) eq 'HASH') {
                    %rolemaps = %{$settings->{$item}->{'roles'}};
                    $checkedfields{'roles'} = 1;
                }
            }
            $datatable .= '<fieldset><legend>'.&mt('User data sent on launch').'</legend>'.
                          '<span class="LC_nobreak">';
            my $userfieldstyle = 'display:none;';
            my $seluserdom = '';
            my $unseluserdom = ' selected="selected"';
            foreach my $field (@fields) {
                my ($checked,$onclick,$id,$spacer);
                if ($checkedfields{$field}) {
                    $checked = ' checked="checked"';
                }
                if ($field eq 'user') {
                    $id = ' id="ltitools_user_field_'.$i.'"';
                    $onclick = ' onclick="toggleLTITools(this.form,'."'$field','$i'".')"';
                    if ($checked) {
                        $userfieldstyle = 'display:inline-block';
                        if ($userincdom) {
                            $seluserdom = $unseluserdom;
                            $unseluserdom = '';
                        }
                    }
                } else {
                    $spacer = ('&nbsp;' x2);
                }
                $datatable .= '<label>'.
                              '<input type="checkbox" name="ltitools_fields_'.$i.'" value="'.$field.'"'.$id.$checked.$onclick.' />'.
                              $lt{$field}.'</label>'.$spacer;
            }
            $datatable .= '</span>';
            $datatable .= '<div style="'.$userfieldstyle.'" id="ltitools_user_div_'.$i.'">'.
                          '<span class="LC_nobreak"> : '.
                          '<select name="ltitools_userincdom_'.$i.'">'.
                          '<option value="">'.&mt('Select').'</option>'.
                          '<option value="0"'.$unseluserdom.'>'.&mt('username').'</option>'.
                          '<option value="1"'.$seluserdom.'>'.&mt('username:domain').'</option>'.
                          '</select></span></div>';
            $datatable .= '</fieldset>'.
                          '<fieldset><legend>'.&mt('Role mapping').'</legend><table><tr>';
            foreach my $role (@courseroles) {
                my ($selected,$selectnone);
                if (!$rolemaps{$role}) {
                    $selectnone = ' selected="selected"';
                }
                $datatable .= '<td style="text-align: center">'. 
                              &Apache::lonnet::plaintext($role,'Course').'<br />'.
                              '<select name="ltitools_roles_'.$role.'_'.$i.'">'.
                              '<option value=""'.$selectnone.'>'.&mt('Select').'</option>';
                foreach my $ltirole (@ltiroles) {
                    unless ($selectnone) {
                        if ($rolemaps{$role} eq $ltirole) {
                            $selected = ' selected="selected"';
                        } else {
                            $selected = '';
                        }
                    }
                    $datatable .= '<option value="'.$ltirole.'"'.$selected.'>'.$ltirole.'</option>';
                }
                $datatable .= '</select></td>';
            }
            $datatable .= '</tr></table></fieldset>';
            my %courseconfig;
            if (ref($settings->{$item}) eq 'HASH') {
                if (ref($settings->{$item}->{'crsconf'}) eq 'HASH') {
                    %courseconfig = %{$settings->{$item}->{'crsconf'}};
                }
            }
            $datatable .= '<fieldset><legend>'.&mt('Configurable in course').'</legend><span class="LC_nobreak">';
            foreach my $item ('label','title','target','linktext','explanation','append') {
                my $checked;
                if ($courseconfig{$item}) {
                    $checked = ' checked="checked"';
                }
                $datatable .= '<label>'.
                       '<input type="checkbox" name="ltitools_courseconfig_'.$i.'" value="'.$item.'"'.$checked.' />'.
                       $lt{'crs'.$item}.'</label>&nbsp; '."\n";
            }
            $datatable .= '</span></fieldset>'.
                          '<fieldset><legend>'.&mt('Custom items sent on launch').'</legend>'.
                          '<table><tr><th>'.&mt('Action').'</th><th>'.&mt('Name').'</th><th>'.&mt('Value').'</th></tr>';
            if (ref($settings->{$item}->{'custom'}) eq 'HASH') {
                my %custom = %{$settings->{$item}->{'custom'}};
                if (keys(%custom) > 0) {
                    foreach my $key (sort(keys(%custom))) {
                        $datatable .= '<tr><td><span class="LC_nobreak">'.
                                      '<label><input type="checkbox" name="ltitools_customdel_'.$i.'" value="'.
                                      $key.'" />'.&mt('Delete').'</label></span></td><td>'.$key.'</td>'.
                                      '<td><input type="text" name="ltitools_customval_'.$key.'_'.$i.'"'.
                                      ' value="'.$custom{$key}.'" /></td></tr>';
                    }
                }
            }
            $datatable .= '<tr><td><span class="LC_nobreak">'.
                          '<label><input type="checkbox" name="ltitools_customadd" value="'.$i.'" />'.
                          &mt('Add').'</label></span></td><td><input type="text" name="ltitools_custom_name_'.$i.'" />'.
                          '</td><td><input type="text" name="ltitools_custom_value_'.$i.'" /></td></tr>';
            $datatable .= '</table></fieldset></td></tr>'."\n";
            $itemcount ++;
        }
    }
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    my $chgstr = ' onchange="javascript:reorderLTITools(this.form,'."'ltitools_add_pos'".');"';
    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'."\n".
                  '<input type="hidden" name="ltitools_maxnum" value="'.$maxnum.'" />'."\n".
                  '<select name="ltitools_add_pos"'.$chgstr.'>';
    for (my $k=0; $k<$maxnum+1; $k++) {
        my $vpos = $k+1;
        my $selstr;
        if ($k == $maxnum) {
            $selstr = ' selected="selected" ';
        }
        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
    }
    $datatable .= '</select>&nbsp;'."\n".
                  '<input type="checkbox" name="ltitools_add" value="1" />'.&mt('Add').'</span></td>'."\n".
                  '<td colspan="2">'.
                  '<fieldset><legend>'.&mt('Required settings').'</legend>'.
                  '<span class="LC_nobreak">'.$lt{'title'}.':<input type="text" size="20" name="ltitools_add_title" value="" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'version'}.':<select name="ltitools_add_version">'.
                  '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'msgtype'}.':<select name="ltitools_add_msgtype">'.
                  '<option value="basic-lti-launch-request" selected="selected">Launch</option></select></span> '.
                  '<span class="LC_nobreak">'.$lt{'sigmethod'}.':<select name="ltitools_add_sigmethod">'.
                  '<option value="HMAC-SHA1" selected="selected">HMAC-SHA1</option>'.
                  '<option value="HMAC-SHA256">HMAC-SHA256</option></select></span>'.
                  '<br />'.
                  '<span class="LC_nobreak">'.$lt{'url'}.':<input type="text" size="40" name="ltitools_add_url" value="" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'key'}.':<input type="text" size="25" name="ltitools_add_key" value="" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" size="5" name="ltitools_add_lifetime" value="300" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'secret'}.':<input type="password" size="20" name="ltitools_add_secret" value="" />'.
                  '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.ltitools_add_secret.type='."'text'".' } else { this.form.ltitools_add_secret.type='."'password'".' }" />'.&mt('Visible input').'</label></span> '."\n".
                  '</fieldset>'.
                  '<fieldset><legend>'.&mt('Optional settings').'</legend>'.
                  '<span class="LC_nobreak">'.&mt('Display target:');
    my %defaultdisp;
    $defaultdisp{'iframe'} = ' checked="checked"';
    foreach my $disp ('iframe','tab','window') {
        $datatable .= '<label><input type="radio" name="ltitools_add_target" value="'.$disp.'"'.$defaultdisp{$disp}.' />'.
                      $lt{$disp}.'</label>'.('&nbsp;'x2);
    }
    $datatable .= ('&nbsp;'x4);
    foreach my $dimen ('width','height') {
        $datatable .= '<label>'.$lt{$dimen}.'&nbsp;'.
                      '<input type="text" name="ltitools_add_'.$dimen.'" size="5" /></label>'.
                      ('&nbsp;'x2);
    }
    $datatable .= '</span><br />'.
                  '<div class="LC_left_float">'.$lt{'linktext'}.'<br />'.
                  '<input type="text" name="ltitools_add_linktext" size="5" /></div>'.
                  '<div class="LC_left_float">'.$lt{'explanation'}.'<br />'.
                  '<textarea name="ltitools_add_explanation" rows="5" cols="40"></textarea>'.
                  '</div><div style=""></div><br />';
    my %units = (
                  'passback' => 'days',
                  'roster'   => 'seconds',
                );
    my %defaulttimes = (
                     'passback' => '7',
                     'roster'   => '300',
                   );
    foreach my $extra ('passback','roster') {
        my $onclick = ' onclick="toggleLTITools(this.form,'."'$extra','add'".');"';
        $datatable .= '<div class="LC_floatleft"><span class="LC_nobreak">'.$lt{$extra}.'&nbsp;'.
                      '<label><input type="radio" name="ltitools_'.$extra.'_add" value="0" checked="checked"'.$onclick.' />'.
                      &mt('No').'</label></span>'.('&nbsp;'x2).'<span class="LC_nobreak">'.
                      '<label><input type="radio" name="ltitools_'.$extra.'_add" value="1"'.$onclick.' />'.
                      &mt('Yes').'</label></span></div>'.
                      '<div class="LC_floatleft" style="display:none;" id="ltitools_'.$extra.'time_add">'.
                      '<span class="LC_nobreak">'.
                      &mt("at least [_1] $units{$extra} after launch",
                          '<input type="text" name="ltitools_'.$extra.'valid_add" value="'.$defaulttimes{$extra}.'" />').
                      '</span></div><div style="padding:0;clear:both;margin:0;border:0"></div>';
    }
    $datatable .= '<span class="LC_nobreak">'.$lt{'icon'}.':&nbsp;'.
                  '('.&mt('if larger than 21x21 pixels, image will be scaled').')&nbsp;';
    if ($switchserver) {
        $datatable .= &mt('Upload to library server: [_1]',$switchserver);
    } else {
        $datatable .= '<input type="file" name="ltitools_add_image" value="" />';
    }
    $datatable .= '</span></fieldset>'.
                  '<fieldset><legend>'.&mt('User data sent on launch').'</legend>'.
                  '<span class="LC_nobreak">';
    foreach my $field (@fields) {
        my ($id,$onclick,$spacer);
        if ($field eq 'user') {
            $id = ' id="ltitools_user_field_add"';
            $onclick = ' onclick="toggleLTITools(this.form,'."'$field','add'".')"';
        } else {
            $spacer = ('&nbsp;' x2);
        }
        $datatable .= '<label>'.
                      '<input type="checkbox" name="ltitools_add_fields" value="'.$field.'"'.$id.$onclick.' />'.
                      $lt{$field}.'</label>'.$spacer;
    }
    $datatable .= '</span>'.
                  '<div style="display:none;" id="ltitools_user_div_add">'.
                  '<span class="LC_nobreak"> : '.
                  '<select name="ltitools_userincdom_add">'.
                  '<option value="" selected="selected">'.&mt('Select').'</option>'.
                  '<option value="0">'.&mt('username').'</option>'.
                  '<option value="1">'.&mt('username:domain').'</option>'.
                  '</select></span></div></fieldset>';
    $datatable .= '<fieldset><legend>'.&mt('Role mapping').'</legend><table><tr>';
    foreach my $role (@courseroles) {
        my ($checked,$checkednone);
        $datatable .= '<td style="text-align: center">'.
                      &Apache::lonnet::plaintext($role,'Course').'<br />'.
                      '<select name="ltitools_add_roles_'.$role.'">'.
                      '<option value="" selected="selected">'.&mt('Select').'</option>';
        foreach my $ltirole (@ltiroles) {
            $datatable .= '<option value="'.$ltirole.'">'.$ltirole.'</option>';
        }
        $datatable .= '</select></td>';
    }
    $datatable .= '</tr></table></fieldset>'.
                  '<fieldset><legend>'.&mt('Configurable in course').'</legend><span class="LC_nobreak">';
    foreach my $item ('label','title','target','linktext','explanation','append') {
        $datatable .= '<label>'.
                      '<input type="checkbox" name="ltitools_courseconfig" value="'.$item.'" checked="checked" />'.
                      $lt{'crs'.$item}.'</label>'.('&nbsp;' x2)."\n";
    }
    $datatable .= '</span></fieldset>'.
                  '<fieldset><legend>'.&mt('Custom items sent on launch').'</legend>'.
                  '<table><tr><th>'.&mt('Action').'</th><th>'.&mt('Name').'</th><th>'.&mt('Value').'</th></tr>'.
                  '<tr><td><span class="LC_nobreak">'.
                  '<label><input type="checkbox" name="ltitools_add_custom" value="1" />'.
                  &mt('Add').'</label></span></td><td><input type="text" name="ltitools_add_custom_name" />'.
                  '</td><td><input type="text" name="ltitools_add_custom_value" /></td></tr>'.
                  '</table></fieldset>'."\n".
                  '</td>'."\n".
                  '</tr>'."\n";
    $itemcount ++;
    return $datatable;
}

sub ltitools_names {
    my %lt = &Apache::lonlocal::texthash(
                                          'title'          => 'Title',
                                          'version'        => 'Version',
                                          'msgtype'        => 'Message Type',
                                          'sigmethod'      => 'Signature Method',
                                          'url'            => 'URL',
                                          'key'            => 'Key',
                                          'lifetime'       => 'Nonce lifetime (s)',
                                          'secret'         => 'Secret',
                                          'icon'           => 'Icon',   
                                          'user'           => 'User',
                                          'fullname'       => 'Full Name',
                                          'firstname'      => 'First Name',
                                          'lastname'       => 'Last Name',
                                          'email'          => 'E-mail',
                                          'roles'          => 'Role',
                                          'window'         => 'Window',
                                          'tab'            => 'Tab',
                                          'iframe'         => 'iFrame',
                                          'height'         => 'Height',
                                          'width'          => 'Width',
                                          'linktext'       => 'Default Link Text',
                                          'explanation'    => 'Default Explanation',
                                          'passback'       => 'Tool can return grades:',
                                          'roster'         => 'Tool can retrieve roster:',
                                          'crstarget'      => 'Display target',
                                          'crslabel'       => 'Course label',
                                          'crstitle'       => 'Course title', 
                                          'crslinktext'    => 'Link Text',
                                          'crsexplanation' => 'Explanation',
                                          'crsappend'      => 'Provider URL',
                                        );
    return %lt;
}

sub print_proctoring {
    my ($dom,$settings,$rowtotal) = @_;
    my $itemcount = 1;
    my (%ordered,%providernames,%current,%currentdef);
    my $confname = $dom.'-domainconfig';
    my $switchserver = &check_switchserver($dom,$confname);
    if (ref($settings) eq 'HASH') {
        foreach my $item (keys(%{$settings})) {
            if (ref($settings->{$item}) eq 'HASH') {
                my $num = $settings->{$item}{'order'};
                $ordered{$num} = $item;
            }
        }
    } else {
        %ordered = (
                     1 => 'proctorio',
                     2 => 'examity',
                   );
    }
    %providernames = &proctoring_providernames();
    my $maxnum = scalar(keys(%ordered));
    my (%requserfields,%optuserfields,%defaults,%extended,%crsconf,@courseroles,@ltiroles);
    my ($requref,$opturef,$defref,$extref,$crsref,$rolesref,$ltiref) = &proctoring_data();
    if (ref($requref) eq 'HASH') {
        %requserfields = %{$requref};
    }
    if (ref($opturef) eq 'HASH') {
        %optuserfields = %{$opturef};
    }
    if (ref($defref) eq 'HASH') {
        %defaults = %{$defref};
    }
    if (ref($extref) eq 'HASH') {
        %extended = %{$extref};
    }
    if (ref($crsref) eq 'HASH') {
        %crsconf = %{$crsref};
    }
    if (ref($rolesref) eq 'ARRAY') {
        @courseroles = @{$rolesref};
    }
    if (ref($ltiref) eq 'ARRAY') {
        @ltiroles = @{$ltiref};
    }
    my $datatable;
    my $css_class;
    if (keys(%ordered)) {
        my @items = sort { $a <=> $b } keys(%ordered);
        for (my $i=0; $i<@items; $i++) {
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            my $provider = $ordered{$items[$i]};
            my $optionsty = 'none';
            my ($available,$version,$lifetime,$imgsrc,$userincdom,$showroles,
                %checkedfields,%rolemaps,%inuse,%crsconfig,%current);
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{$provider}) eq 'HASH') {
                    %current = %{$settings->{$provider}};
                    if ($current{'available'}) {
                        $optionsty = 'block';
                        $available = 1;
                    }
                    if ($current{'lifetime'} =~ /^\d+$/) {
                        $lifetime = $current{'lifetime'};
                    }
                    if ($current{'version'} =~ /^\d+\.\d+$/) {
                        $version = $current{'version'};
                    }
                    if ($current{'image'} ne '') {
                        $imgsrc = '<img src="'.$current{'image'}.'" alt="'.&mt('Proctoring service icon').'" />';
                    }
                    if (ref($current{'fields'}) eq 'ARRAY') {
                        map { $checkedfields{$_} = 1; } @{$current{'fields'}};
                    }
                    $userincdom = $current{'incdom'};
                    if (ref($current{'roles'}) eq 'HASH') {
                        %rolemaps = %{$current{'roles'}};
                        $checkedfields{'roles'} = 1;
                    }
                    if (ref($current{'defaults'}) eq 'ARRAY') {
                        foreach my $val (@{$current{'defaults'}}) {
                            if (grep(/^\Q$val\E$/,@{$defaults{$provider}})) {
                                $inuse{$val} = 1;
                            } else {
                                foreach my $poss (keys(%{$extended{$provider}})) {
                                    if (ref($extended{$provider}{$poss}) eq 'ARRAY') {
                                        if (grep(/^\Q$val\E$/,@{$extended{$provider}{$poss}})) {
                                            $inuse{$poss} = $val;
                                            last;
                                        }
                                    }
                                }
                            }
                        }
                    } elsif (ref($current{'defaults'}) eq 'HASH') {
                        foreach my $key (keys(%{$current{'defaults'}})) {
                            my $currval = $current{'defaults'}{$key}; 
                            if (grep(/^\Q$key\E$/,@{$defaults{$provider}})) {
                                $inuse{$key} = 1;
                            } else {
                                my $match;
                                foreach my $poss (keys(%{$extended{$provider}})) {
                                    if (ref($extended{$provider}{$poss}) eq 'ARRAY') {
                                        if (grep(/^\Q$key\E$/,@{$extended{$provider}{$poss}})) {
                                            $inuse{$poss} = $key;
                                            last;
                                        }
                                    } elsif (ref($extended{$provider}{$poss}) eq 'HASH') {
                                        foreach my $inner (sort(keys(%{$extended{$provider}{$poss}}))) {
                                            if (ref($extended{$provider}{$poss}{$inner}) eq 'ARRAY') {
                                                if (grep(/^\Q$currval\E$/,@{$extended{$provider}{$poss}{$inner}})) {
                                                    $currentdef{$inner} = $currval;
                                                    $match = 1;
                                                    last;
                                                }
                                            } elsif ($inner eq $key) {
                                                $currentdef{$key} = $currval;
                                                $match = 1;
                                                last;
                                            }
                                        }
                                    }
                                    last if ($match);
                                }
                            }
                        }
                    }
                    if (ref($current{'crsconf'}) eq 'ARRAY') {
                        map { $crsconfig{$_} = 1; } @{$current{'crsconf'}};
                    }
                }
            }
            my %lt = &proctoring_titles($provider);
            my %fieldtitles = &proctoring_fieldtitles($provider);
            my $onclickavailable = ' onclick="toggleProctoring(this.form,'."'$provider'".');"';
            my %checkedavailable = (
                                   yes => '',
                                   no  => ' checked="checked"',
                                 );
            if ($available) {
                $checkedavailable{'yes'} = $checkedavailable{'no'};
                $checkedavailable{'no'} = '';
            }
            my $chgstr = ' onchange="javascript:reorderProctoring(this.form,'."'proctoring_pos_".$provider."'".');"';
            $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                         .'<select name="proctoring_pos_'.$provider.'"'.$chgstr.'>';
            for (my $k=0; $k<$maxnum; $k++) {
                my $vpos = $k+1;
                my $selstr;
                if ($k == $i) {
                    $selstr = ' selected="selected" ';
                }
                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
            }
            if ($version eq '') {
                if ($provider eq 'proctorio') {
                    $version = '1.0';
                } elsif ($provider eq 'examity') {
                    $version = '1.1';
                }
            }
            if ($lifetime eq '') {
                $lifetime = '300';
            }
            $datatable .=
                '</select>'.('&nbsp;'x2).'<b>'.$providernames{$provider}.'</b></span><br />'.
                '<span class="LC_nobreak">'.$lt{'avai'}.'&nbsp;'.
                '<label><input type="radio" name="proctoring_available_'.$provider.'" value="1"'.$onclickavailable.$checkedavailable{yes}.' />'.&mt('Yes').'</label>&nbsp;'."\n".
                '<label><input type="radio" name="proctoring_available_'.$provider.'" value="0"'.$onclickavailable.$checkedavailable{no}.' />'.&mt('No').'</label></span>'."\n".
                '</td>'.
                '<td colspan="2">'.
                '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'"><legend>'.$lt{'base'}.'</legend>'.
                '<span class="LC_nobreak">'.$lt{'version'}.':<select name="proctoring_'.$provider.'_version">'.
                '<option value="'.$version.'" selected="selected">'.$version.'</option></select></span> '."\n".
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'sigmethod'}.':<select name="proctoring_'.$provider.'_sigmethod">'.
                '<option value="HMAC-SHA1" selected="selected">HMAC-SHA1</option>'.
                '<option value="HMAC-SHA256">HMAC-SHA256</option></select></span>'.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" size="5" name="proctoring_'.$provider.'_lifetime" value="'.$lifetime.'" /></span> '."\n".
                '<br />'.
                '<span class="LC_nobreak">'.$lt{'url'}.':<input type="text" size="40" name="proctoring_'.$provider.'_url" value="'.$current{'url'}.'" /></span> '."\n".
                '<br />'.
                '<span class="LC_nobreak">'.$lt{'key'}.':<input type="text" size="25" name="proctoring_'.$provider.'_key" value="'.$current{'key'}.'" /></span> '."\n".
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'secret'}.':<input type="password" size="20" name="proctoring_'.$provider.'_secret" value="'.$current{'secret'}.'" />'.
                '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.proctoring_'.$provider.'_secret.type='."'text'".' } else { this.form.proctoring_'.$provider.'_secret.type='."'password'".' }" />'.$lt{'visible'}.'</label></span><br />'."\n";
            $datatable .= '<span class="LC_nobreak">'.$lt{'icon'}.':&nbsp;';
            if ($imgsrc) {
                $datatable .= $imgsrc.
                              '<label><input type="checkbox" name="proctoring_image_del"'.
                              ' value="'.$provider.'" />'.&mt('Delete?').'</label></span> '.
                              '<span class="LC_nobreak">&nbsp;'.&mt('Replace:');
            }
            $datatable .= '&nbsp;';
            if ($switchserver) {
                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
            } else {
                $datatable .= '<input type="file" name="proctoring_image_'.$provider.'" value="" />';
            }
            unless ($imgsrc) {
                $datatable .= '<br />('.&mt('if larger than 21x21 pixels, image will be scaled').')';
            }
            $datatable .= '</fieldset>'."\n";
            if (ref($requserfields{$provider}) eq 'ARRAY') {
                if (@{$requserfields{$provider}} > 0) {
                    $datatable .= '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'"><legend>'.$lt{'requ'}.'</legend>';
                    foreach my $field (@{$requserfields{$provider}}) {
                        $datatable .= '<span class="LC_nobreak">'.
                                      '<label><input type="checkbox" name="proctoring_reqd_'.$provider.'" value="'.$field.'" checked="checked" disabled="disabled" />'.
                                      $lt{$field}.'</label>';
                        if ($field eq 'user') {
                            my $seluserdom = '';
                            my $unseluserdom = ' selected="selected"';
                            if ($userincdom) {
                                $seluserdom = $unseluserdom;
                                $unseluserdom = '';
                            }
                            $datatable .= ':&nbsp;'.
                                '<select name="proctoring_userincdom_'.$provider.'">'.
                                '<option value="0"'.$unseluserdom.'>'.$lt{'username'}.'</option>'.
                                '<option value="1"'.$seluserdom.'>'.$lt{'uname:dom'}.'</option>'.
                                '</select>&nbsp;';
                        } else {
                            $datatable .= '&nbsp;';
                            if ($field eq 'roles') {
                                $showroles = 1; 
                            } 
                        }
                        $datatable .= '</span> ';
                    }
                }
                $datatable .= '</fieldset>'."\n";
            }
            if (ref($optuserfields{$provider}) eq 'ARRAY') {
                if (@{$optuserfields{$provider}} > 0) {
                    $datatable .= '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'"><legend>'.$lt{'optu'}.'</legend>'; 
                    foreach my $field (@{$optuserfields{$provider}}) {
                        my $checked;
                        if ($checkedfields{$field}) {
                            $checked = ' checked="checked"';
                        }
                        $datatable .= '<span class="LC_nobreak">'.
                                      '<label><input type="checkbox" name="proctoring_optional_'.$provider.'" value="'.$field.'"'.$checked.' />'.$lt{$field}.'</label></span>&nbsp; ';
                    }
                    $datatable .= '</fieldset>'."\n";
                }
            }
            if (ref($defaults{$provider}) eq 'ARRAY') {
                if (@{$defaults{$provider}}) {
                    my (%options,@selectboxes);
                    if (ref($extended{$provider}) eq 'HASH') {
                        %options = %{$extended{$provider}};
                    }
                    $datatable .= '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'"><legend>'.$lt{'defa'}.'</legend>';
                    my ($rem,$numinrow,$dropdowns);
                    if ($provider eq 'proctorio') { 
                        $datatable .= '<table>';
                        $numinrow = 4;
                    }
                    my $i = 0;
                    foreach my $field (@{$defaults{$provider}}) {
                        my $checked;
                        if ($inuse{$field}) {
                            $checked = ' checked="checked"';
                        }
                        if ($provider eq 'examity') {
                            if ($field eq 'display') {
                                $datatable .= '<span class="LC_nobreak">'.&mt('Display target:');
                                foreach my $option ('iframe','tab','window') {
                                    my $checkdisp;
                                    if ($currentdef{'target'} eq $option) {
                                        $checkdisp = ' checked="checked"';
                                    }
                                    $datatable .= '<label><input type="radio" name="proctoring_target_'.$provider.'" value="'.$option.'"'.$checkdisp.' />'.
                                    $fieldtitles{$option}.'</label>'.('&nbsp;'x2);
                                }
                                $datatable .= ('&nbsp;'x4);
                                foreach my $dimen ('width','height') {
                                    $datatable .= '<label>'.$fieldtitles{$dimen}.'&nbsp;'.
                                                  '<input type="text" name="proctoring_'.$dimen.'_'.$provider.'" size="5" '.
                                                  'value="'.$currentdef{$dimen}.'" /></label>'.
                                                  ('&nbsp;'x2);
                                }
                                $datatable .= '</span><br />'.
                                              '<div class="LC_left_float">'.$fieldtitles{'linktext'}.'<br />'.
                                              '<input type="text" name="proctoring_linktext_'.$provider.'" '.
                                              'size="25" value="'.$currentdef{'linktext'}.'" /></div>'.
                                              '<div class="LC_left_float">'.$fieldtitles{'explanation'}.'<br />'.
                                              '<textarea name="proctoring_explanation_'.$provider.'" rows="5" cols="40">'.
                                              $currentdef{'explanation'}.
                                              '</textarea></div><div style=""></div><br />';
                            }
                        } else {
                            if ((exists($options{$field})) && (ref($options{$field}) eq 'ARRAY')) {
                                my ($output,$selnone);
                                unless ($checked) {
                                    $selnone = ' selected="selected"';
                                }
                                $output .= '<span class="LC_nobreak">'.$fieldtitles{$field}.': '.
                                           '<select name="proctoring_defaults_'.$field.'_'.$provider.'">'.
                                           '<option value=""'.$selnone.'>'.&mt('Not in use').'</option>'; 
                                foreach my $option (@{$options{$field}}) {
                                    my $sel; 
                                    if ($inuse{$field} eq $option) {
                                        $sel = ' selected="selected"';
                                    }
                                    $output .= '<option value="'.$option.'"'.$sel.'>'.$fieldtitles{$option}.'</option>';
                                }
                                $output .= '</select></span>';
                                push(@selectboxes,$output);
                            } else {
                                $rem = $i%($numinrow);
                                if ($rem == 0) {
                                    if ($i > 0) {
                                        $datatable .= '</tr>';
                                    }
                                    $datatable .= '<tr>';
                                }
                                $datatable .= '<td class="LC_left_item">'.
                                              '<span class="LC_nobreak">'.
                                              '<label><input type="checkbox" name="proctoring_defaults_'.$provider.'" value="'.$field.'"'.$checked.' />'.
                                              $fieldtitles{$field}.'</label></span></td>';
                                $i++;
                            }
                        }
                    }
                    if ($provider eq 'proctorio') {
                        if ($numinrow) {
                            $rem = $i%$numinrow;
                        }
                        my $colsleft = $numinrow - $rem;
                        if ($colsleft > 1) {
                            $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">';
                        } else {
                            $datatable .= '<td class="LC_left_item">';
                        }
                        $datatable .= '&nbsp;'.
                                      '</td></tr></table>';
                        if (@selectboxes) {
                            $datatable .= '<hr /><table>';
                            $numinrow = 2;
                            for (my $i=0; $i<@selectboxes; $i++) {
                                $rem = $i%($numinrow);
                                if ($rem == 0) {
                                    if ($i > 0) {
                                        $datatable .= '</tr>';
                                    }
                                    $datatable .= '<tr>';
                                }
                                $datatable .= '<td class="LC_left_item">'.
                                              $selectboxes[$i].'</td>';
                            }
                            if ($numinrow) {
                                $rem = $i%$numinrow;
                            }
                            $colsleft = $numinrow - $rem;
                            if ($colsleft > 1) {
                                $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">';
                            } else {
                                $datatable .= '<td class="LC_left_item">';
                            }
                            $datatable .= '&nbsp;'.
                                          '</td></tr></table>';
                        }
                    }
                    $datatable .= '</fieldset>';
                }
                if (ref($crsconf{$provider}) eq 'ARRAY') {
                    $datatable .= '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'">'.
                                  '<legend>'.&mt('Configurable in course').'</legend>';
                    my ($rem,$numinrow);
                    if ($provider eq 'proctorio') {
                        $datatable .= '<table>';
                        $numinrow = 4;
                    }
                    my $i = 0;
                    foreach my $item (@{$crsconf{$provider}}) {
                        my $name;
                        if ($provider eq 'examity') {
                            $name = $lt{'crs'.$item};
                        } elsif ($provider eq 'proctorio') {
                            $name = $fieldtitles{$item};
                            $rem = $i%($numinrow);
                            if ($rem == 0) {
                                if ($i > 0) {
                                    $datatable .= '</tr>';
                                }
                                $datatable .= '<tr>';
                            }
                            $datatable .= '<td class="LC_left_item>';
                        }
                        my $checked;
                        if ($crsconfig{$item}) {
                            $checked = ' checked="checked"';
                        }
                        $datatable .= '<span class="LC_nobreak"><label>'.
                                      '<input type="checkbox" name="proctoring_crsconf_'.$provider.'" value="'.$item.'"'.$checked.' />'.
                                      $name.'</label></span>';
                        if ($provider eq 'examity') {
                            $datatable .= '&nbsp; ';
                        }
                        $datatable .= "\n";
                        $i++;
                    }
                    if ($provider eq 'proctorio') {
                        if ($numinrow) {
                            $rem = $i%$numinrow;
                        }
                        my $colsleft = $numinrow - $rem;
                        if ($colsleft > 1) {
                            $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">';
                        } else {
                            $datatable .= '<td class="LC_left_item">';
                        }
                        $datatable .= '&nbsp;'.
                                      '</td></tr></table>';
                    }
                    $datatable .= '</fieldset>';
                }
                if ($showroles) {
                    $datatable .= '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'">'.
                                  '<legend>'.&mt('Role mapping').'</legend><table><tr>';
                    foreach my $role (@courseroles) {
                        my ($selected,$selectnone);
                        if (!$rolemaps{$role}) {
                            $selectnone = ' selected="selected"';
                        }
                        $datatable .= '<td style="text-align: center">'.
                                      &Apache::lonnet::plaintext($role,'Course').'<br />'.
                                      '<select name="proctoring_roles_'.$role.'_'.$provider.'">'.
                                      '<option value=""'.$selectnone.'>'.&mt('Select').'</option>';
                        foreach my $ltirole (@ltiroles) {
                            unless ($selectnone) {
                                if ($rolemaps{$role} eq $ltirole) {
                                    $selected = ' selected="selected"';
                                } else {
                                    $selected = '';
                                }
                            }
                            $datatable .= '<option value="'.$ltirole.'"'.$selected.'>'.$ltirole.'</option>';
                        }
                        $datatable .= '</select></td>';
                    }
                    $datatable .= '</tr></table></fieldset>'.
                                  '<fieldset class="proctoring_'.$provider.'" style="display:'.$optionsty.'">'.
                                  '<legend>'.&mt('Custom items sent on launch').'</legend>'.
                                  '<table><tr><th>'.&mt('Action').'</th><th>'.&mt('Name').'</th><th>'.&mt('Value').'</th></tr>'.
                                  '<tr><td></td><td>lms</td>'.
                                  '<td><input type="text" name="proctoring_customval_lms_'.$provider.'"'.
                                  ' value="Loncapa" disabled="disabled"/></td></tr>';
                    if ((ref($settings) eq 'HASH') && (ref($settings->{$provider}) eq 'HASH') &&
                        (ref($settings->{$provider}->{'custom'}) eq 'HASH')) {
                        my %custom = %{$settings->{$provider}->{'custom'}};
                        if (keys(%custom) > 0) {
                            foreach my $key (sort(keys(%custom))) {
                                next if ($key eq 'lms');
                                $datatable .= '<tr><td><span class="LC_nobreak">'.
                                              '<label><input type="checkbox" name="proctoring_customdel_'.$provider.'" value="'.
                                              $key.'" />'.&mt('Delete').'</label></span></td><td>'.$key.'</td>'.
                                              '<td><input type="text" name="proctoring_customval_'.$key.'_'.$provider.'"'.
                                              ' value="'.$custom{$key}.'" /></td></tr>';
                            }
                        }
                    }
                    $datatable .= '<tr><td><span class="LC_nobreak">'.
                                  '<label><input type="checkbox" name="proctoring_customadd" value="'.$provider.'" />'.
                                  &mt('Add more').'</label></span></td><td><input type="text" name="proctoring_custom_name_'.$provider.'" />'.
                                  '</td><td><input type="text" name="proctoring_custom_value_'.$provider.'" /></td></tr>'.
                                  '</table></fieldset></td></tr>'."\n";
                }
                $datatable .= '</td></tr>';
            }
            $itemcount ++;
        }
    }
    return $datatable;
}

sub proctoring_data {
    my $requserfields = {
                      proctorio => ['user'],
                      examity   => ['roles','user'],
                     };
    my $optuserfields = {
                        proctorio => ['fullname'],
                        examity   => ['fullname','firstname','lastname','email'],
                     };
    my $defaults = {
                  proctorio => ['recordvideo','recordaudio','recordscreen','recordwebtraffic',
                                'recordroomstart','verifyvideo','verifyaudio','verifydesktop',
                                'verifyid','verifysignature','fullscreen','clipboard','tabslinks',
                                'closetabs','onescreen','print','downloads','cache','rightclick',
                                'reentry','calculator','whiteboard'],
                  examity   => ['display'],
                };
    my $extended = { 
                  proctorio => {
                                 verifyid => ['verifyidauto','verifyidlive'],
                                 fullscreen => ['fullscreenlenient','fullscreenmoderate','fullscreensever'],
                                 tabslinks => ['notabs','linksonly'],
                                 reentry => ['noreentry','agentreentry'],
                                 calculator => ['calculatorbasic','calculatorsci'],
                               },
                  examity => {
                               display => {
                                           target      => ['iframe','tab','window'],
                                           width       => '',
                                           height      => '',
                                           linktext    => '',
                                           explanation => '',
                                          },
                             },
                };
    my $crsconf = {
                 proctorio => ['recordvideo','recordaudio','recordscreen','recordwebtraffic',
                               'recordroomstart','verifyvideo','verifyaudio','verifydesktop',
                               'verifyid','verifysignature','fullscreen','clipboard','tabslinks',
                               'closetabs','onescreen','print','downloads','cache','rightclick',
                               'reentry','calculator','whiteboard'],
                 examity => ['label','title','target','linktext','explanation','append'],
               };
    my $courseroles = ['cc','in','ta','ep','st'];
    my $ltiroles = ['Instructor','ContentDeveloper','TeachingAssistant','Learner'];
    return ($requserfields,$optuserfields,$defaults,$extended,$crsconf,$courseroles,$ltiroles);
}

sub proctoring_titles {
    my ($item) = @_;
    my (%common_lt,%custom_lt);
    %common_lt = &Apache::lonlocal::texthash (
                     'avai'      => 'Available?',
                     'base'      => 'Basic Settings',
                     'requ'      => 'User data required to be sent on launch',
                     'optu'      => 'User data optionally sent on launch',
                     'udsl'      => 'User data sent on launch',
                     'defa'      => 'Defaults for items configurable in course',
                     'sigmethod' => 'Signature Method',
                     'key'       => 'Key',
                     'lifetime'  => 'Nonce lifetime (s)',
                     'secret'    => 'Secret',
                     'icon'      => 'Icon',
                     'fullname'  => 'Full Name',
                     'visible'   => 'Visible input',
                     'username'  => 'username',
                     'user'      => 'User',
                 );
    if ($item eq 'proctorio') {
        %custom_lt = &Apache::lonlocal::texthash (
                         'version'        => 'OAuth version',
                         'url'            => 'API URL',
                         'uname:dom'      => 'username-domain',
        );
    } elsif ($item eq 'examity') {
        %custom_lt = &Apache::lonlocal::texthash (
                         'version'        => 'LTI Version',
                         'url'            => 'URL',
                         'uname:dom'      => 'username:domain',
                         'msgtype'        => 'Message Type',
                         'firstname'      => 'First Name',
                         'lastname'       => 'Last Name',
                         'email'          => 'E-mail',
                         'roles'          => 'Role',
                         'crstarget'      => 'Display target',
                         'crslabel'       => 'Course label',
                         'crstitle'       => 'Course title', 
                         'crslinktext'    => 'Link Text',
                         'crsexplanation' => 'Explanation',
                         'crsappend'      => 'Provider URL',
        );
    }
    my %lt = (%common_lt,%custom_lt);
    return %lt;
}

sub proctoring_fieldtitles {
    my ($item) = @_;
    if ($item eq 'proctorio') {
        return &Apache::lonlocal::texthash (
                  'recordvideo' => 'Record video',
                  'recordaudio' => 'Record audio',
                  'recordscreen' => 'Record screen',
                  'recordwebtraffic' => 'Record web traffic',
                  'recordroomstart' => 'Record room scan',
                  'verifyvideo' => 'Verify webcam',
                  'verifyaudio' => 'Verify microphone',
                  'verifydesktop' => 'Verify desktop recording',
                  'verifyid' => 'Photo ID verification',
                  'verifysignature' => 'Require signature',
                  'fullscreen' => 'Fullscreen',
                  'clipboard' => 'Disable copy/paste',
                  'tabslinks' => 'New tabs/windows',
                  'closetabs' => 'Close other tabs',
                  'onescreen' => 'Limit to single screen',
                  'print' => 'Disable Printing',
                  'downloads' => 'Disable Downloads',
                  'cache' => 'Empty cache after exam',
                  'rightclick' => 'Disable right click',
                  'reentry' => 'Re-entry to exam',
                  'calculator' => 'Onscreen calculator',
                  'whiteboard' => 'Onscreen whiteboard',
                  'verifyidauto' => 'Automated verification',
                  'verifyidlive' => 'Live agent verification',
                  'fullscreenlenient' => 'Forced, but can navigate away for up to 30s',
                  'fullscreenmoderate' => 'Forced, but can navigate away for up to 15s',
                  'fullscreensever' => 'Forced, navigation away ends exam',
                  'notabs' => 'Disaallowed',
                  'linksonly' => 'Allowed from links in exam',
                  'noreentry' => 'Disallowed',
                  'agentreentry' => 'Agent required for re-entry',
                  'calculatorbasic' => 'Basic',
                  'calculatorsci' => 'Scientific',
        );
    } elsif ($item eq 'examity') {
        return &Apache::lonlocal::texthash (
                'target'         => 'Display target',   
                'window'         => 'Window',
                'tab'            => 'Tab',
                'iframe'         => 'iFrame',
                'height'         => 'Height (pixels)',
                'width'          => 'Width (pixels)',
                'linktext'       => 'Default Link Text',
                'explanation'    => 'Default Explanation',
                'append'         => 'Provider URL',
        );
    }
}

sub proctoring_providernames {
    return (
             proctorio => 'Proctorio',
             examity   => 'Examity',
           );
}

sub print_lti {
    my ($dom,$settings,$rowtotal) = @_;
    my $itemcount = 1;
    my $maxnum = 0;
    my $css_class;
    my %ordered;
    if (ref($settings) eq 'HASH') {
        foreach my $item (keys(%{$settings})) {
            if (ref($settings->{$item}) eq 'HASH') {
                my $num = $settings->{$item}{'order'};
                if ($num eq '') {
                    $num = scalar(keys(%{$settings}));
                }
                $ordered{$num} = $item;
            }
        }
    }
    my $maxnum = scalar(keys(%ordered));
    my $datatable;
    my %lt = &lti_names();
    if (keys(%ordered)) {
        my @items = sort { $a <=> $b } keys(%ordered);
        for (my $i=0; $i<@items; $i++) {
            $css_class = $itemcount%2?' class="LC_odd_row"':'';
            my $item = $ordered{$items[$i]};
            my ($key,$secret,$lifetime,$consumer,$requser,$crsinc,$current);
            if (ref($settings->{$item}) eq 'HASH') {
                $key = $settings->{$item}->{'key'};
                $secret = $settings->{$item}->{'secret'};
                $lifetime = $settings->{$item}->{'lifetime'};
                $consumer = $settings->{$item}->{'consumer'};
                $requser = $settings->{$item}->{'requser'};
                $crsinc = $settings->{$item}->{'crsinc'};
                $current = $settings->{$item};
            }
            my $onclickrequser = ' onclick="toggleLTI(this.form,'."'requser','$i'".');"';
            my %checkedrequser = (
                                   yes => ' checked="checked"',
                                   no  => '',
                                 );
            if (!$requser) {
                $checkedrequser{'no'} = $checkedrequser{'yes'};
                $checkedrequser{'yes'} = '';
            }
            my $onclickcrsinc = ' onclick="toggleLTI(this.form,'."'crsinc','$i'".');"';
            my %checkedcrsinc = (
                                      yes => ' checked="checked"',
                                      no  => '',
                                   );
            if (!$crsinc) {
                $checkedcrsinc{'no'} = $checkedcrsinc{'yes'};
                $checkedcrsinc{'yes'} = '';
            }
            my $chgstr = ' onchange="javascript:reorderLTI(this.form,'."'lti_pos_".$item."'".');"';
            $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                         .'<select name="lti_pos_'.$item.'"'.$chgstr.'>';
            for (my $k=0; $k<=$maxnum; $k++) {
                my $vpos = $k+1;
                my $selstr;
                if ($k == $i) {
                    $selstr = ' selected="selected" ';
                }
                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
            }
            $datatable .= '</select>'.('&nbsp;'x2).
                '<label><input type="checkbox" name="lti_del" value="'.$item.'" />'.
                &mt('Delete?').'</label></span></td>'.
                '<td colspan="2">'.
                '<fieldset><legend>'.&mt('Required settings').'</legend>'.
                '<span class="LC_nobreak">'.$lt{'consumer'}.
                ':<input type="text" size="15" name="lti_consumer_'.$i.'" value="'.$consumer.'" /></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'version'}.':<select name="lti_version_'.$i.'">'.
                '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" name="lti_lifetime_'.$i.'"'.
                'value="'.$lifetime.'" size="3" /></span>'.
                ('&nbsp;'x2).
                 '<span class="LC_nobreak">'.$lt{'requser'}.':'.
                 '<label><input type="radio" name="lti_requser_'.$i.'" value="1"'.$onclickrequser.$checkedrequser{yes}.' />'.&mt('Yes').'</label>&nbsp;'."\n".
                 '<label><input type="radio" name="lti_requser_'.$i.'" value="0"'.$onclickrequser.$checkedrequser{no}.' />'.&mt('No').'</label></span>'."\n".
                '<br /><br />'.
                '<span class="LC_nobreak">'.$lt{'crsinc'}.':'.
                '<label><input type="radio" name="lti_crsinc_'.$i.'" value="1"'.$onclickcrsinc.$checkedcrsinc{yes}.' />'.&mt('Yes').'</label>&nbsp;'."\n".
                '<label><input type="radio" name="lti_crsinc_'.$i.'" value="0"'.$onclickcrsinc.$checkedcrsinc{no}.' />'.&mt('No').'</label></span>'."\n".
                ('&nbsp;'x4).
                '<span class="LC_nobreak">'.$lt{'key'}.
                ':<input type="text" size="25" name="lti_key_'.$i.'" value="'.$key.'" /></span> '.
                ('&nbsp;'x2).
                '<span class="LC_nobreak">'.$lt{'secret'}.':'.
                '<input type="password" size="20" name="lti_secret_'.$i.'" value="'.$secret.'" />'.
                '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.lti_secret_'.$i.'.type='."'text'".' } else { this.form.lti_secret_'.$i.'.type='."'password'".' }" />'.&mt('Visible input').'</label>'.
                '<input type="hidden" name="lti_id_'.$i.'" value="'.$item.'" /></span>'.
                '</fieldset>'.&lti_options($i,$current,$itemcount,%lt).'</td></tr>';
            $itemcount ++;
        }
    }
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    my $chgstr = ' onchange="javascript:reorderLTI(this.form,'."'lti_pos_add'".');"';
    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'."\n".
                  '<input type="hidden" name="lti_maxnum" value="'.$maxnum.'" />'."\n".
                  '<select name="lti_pos_add"'.$chgstr.'>';
    for (my $k=0; $k<$maxnum+1; $k++) {
        my $vpos = $k+1;
        my $selstr;
        if ($k == $maxnum) {
            $selstr = ' selected="selected" ';
        }
        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
    }
    $datatable .= '</select>&nbsp;'."\n".
                  '<input type="checkbox" name="lti_add" value="1" />'.&mt('Add').'</span></td>'."\n".
                  '<td colspan="2">'.
                  '<fieldset><legend>'.&mt('Required settings').'</legend>'.
                  '<span class="LC_nobreak">'.$lt{'consumer'}.
                  ':<input type="text" size="15" name="lti_consumer_add" value="" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'version'}.':<select name="lti_version_add">'.
                  '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" size="3" name="lti_lifetime_add" value="300" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'requser'}.':'.
                  '<label><input type="radio" name="lti_requser_add" value="1" onclick="toggleLTI(this.form,'."'requser','add'".');" checked="checked" />'.&mt('Yes').'</label>&nbsp;'."\n".
                  '<label><input type="radio" name="lti_requser_add" value="0" onclick="toggleLTI(this.form,'."'requser','add'".');" />'.&mt('No').'</label></span>'."\n".
                  '<br /><br />'.
                  '<span class="LC_nobreak">'.$lt{'crsinc'}.':'.
                  '<label><input type="radio" name="lti_crsinc_add" value="1" onclick="toggleLTI(this.form,'."'crsinc','add'".');" checked="checked" />'.&mt('Yes').'</label>&nbsp;'."\n".
                  '<label><input type="radio" name="lti_crsinc_add" value="0" onclick="toggleLTI(this.form,'."'crsinc','add'".');" />'.&mt('No').'</label></span>'."\n".
                  ('&nbsp;'x4).
                  '<span class="LC_nobreak">'.$lt{'key'}.':<input type="text" size="25" name="lti_key_add" value="" /></span> '."\n".
                  ('&nbsp;'x2).
                  '<span class="LC_nobreak">'.$lt{'secret'}.':<input type="password" size="20" name="lti_secret_add" value="" />'.
                  '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.lti_secret_add.type='."'text'".' } else { this.form.lti_secret_add.type='."'password'".' }" />'.&mt('Visible input').'</label></span> '."\n".
                  '</fieldset>'.&lti_options('add',undef,$itemcount,%lt).
                  '</td>'."\n".
                  '</tr>'."\n";
    $$rowtotal ++;
    return $datatable;;
}

sub lti_names {
    my %lt = &Apache::lonlocal::texthash(
                                          'version'   => 'LTI Version',
                                          'url'       => 'URL',
                                          'key'       => 'Key',
                                          'lifetime'  => 'Nonce lifetime (s)',
                                          'consumer'  => 'Consumer',
                                          'secret'    => 'Secret',
                                          'requser'   => "User's identity sent",
                                          'crsinc'    => "Course's identity sent",
                                          'email'     => 'Email address',
                                          'sourcedid' => 'User ID',
                                          'other'     => 'Other',
                                          'passback'  => 'Can return grades to Consumer:',
                                          'roster'    => 'Can retrieve roster from Consumer:',
                                          'topmenu'   => 'Display LON-CAPA page header',
                                          'inlinemenu'=> 'Display LON-CAPA inline menu',
                                        );
    return %lt;
}

sub lti_options {
    my ($num,$current,$itemcount,%lt) = @_;
    my (%checked,%rolemaps,$crssecsrc,$userfield,$cidfield,$callback);
    $checked{'mapuser'}{'sourcedid'} = ' checked="checked"';
    $checked{'mapcrs'}{'course_offering_sourcedid'} = ' checked="checked"';
    $checked{'storecrs'}{'Y'} = ' checked="checked"';
    $checked{'makecrs'}{'N'} = ' checked="checked"';
    $checked{'mapcrstype'} = {};
    $checked{'makeuser'} = {};
    $checked{'selfenroll'} = {};
    $checked{'crssec'} = {};
    $checked{'crssecsrc'} = {};
    $checked{'lcauth'} = {};
    $checked{'menuitem'} = {};
    if ($num eq 'add') {
        $checked{'lcauth'}{'lti'} = ' checked="checked"';
    }
    my $userfieldsty = 'none';
    my $crsfieldsty = 'none';
    my $crssecfieldsty = 'none';
    my $secsrcfieldsty = 'none';
    my $callbacksty = 'none';
    my $passbacksty = 'none';
    my $optionsty = 'block';
    my $crssty = 'block';
    my $lcauthparm;
    my $lcauthparmstyle = 'display:none';
    my $lcauthparmtext;
    my $menusty;
    my $numinrow = 4;
    my %menutitles = &ltimenu_titles();

    if (ref($current) eq 'HASH') {
        if (!$current->{'requser'}) {
            $optionsty = 'none';
            $crssty = 'none';
        } elsif (!$current->{'crsinc'}) {
            $crssty = 'none';
        }
        if (($current->{'mapuser'} ne '') && ($current->{'mapuser'} ne 'lis_person_sourcedid')) {
            $checked{'mapuser'}{'sourcedid'} = '';
            if ($current->{'mapuser'} eq 'lis_person_contact_email_primary') {
                $checked{'mapuser'}{'email'} = ' checked="checked"'; 
            } else {
                $checked{'mapuser'}{'other'} = ' checked="checked"';
                $userfield = $current->{'mapuser'};
                $userfieldsty = 'inline-block';
            }
        }
        if (($current->{'mapcrs'} ne '') && ($current->{'mapcrs'} ne 'course_offering_sourcedid')) {
            $checked{'mapcrs'}{'course_offering_sourcedid'} = '';
            if ($current->{'mapcrs'} eq 'context_id') {
                $checked{'mapcrs'}{'context_id'} = ' checked="checked"'; 
            } else {
                $checked{'mapcrs'}{'other'} = ' checked="checked"';
                $cidfield = $current->{'mapcrs'};
                $crsfieldsty = 'inline-block';
            }
        }
        if (ref($current->{'mapcrstype'}) eq 'ARRAY') {
            foreach my $type (@{$current->{'mapcrstype'}}) {
                $checked{'mapcrstype'}{$type} = ' checked="checked"';
            }
        }
        if (!$current->{'storecrs'}) {
            $checked{'storecrs'}{'N'} = $checked{'storecrs'}{'Y'};
            $checked{'storecrs'}{'Y'} = '';
        }
        if ($current->{'makecrs'}) {
            $checked{'makecrs'}{'Y'} = '  checked="checked"';
        }
        if (ref($current->{'makeuser'}) eq 'ARRAY') {
            foreach my $role (@{$current->{'makeuser'}}) {
                $checked{'makeuser'}{$role} = ' checked="checked"';
            }
        }
        if ($current->{'lcauth'} =~ /^(internal|localauth|krb4|krb5|lti)$/) {
            $checked{'lcauth'}{$1} = ' checked="checked"';
            unless (($current->{'lcauth'} eq 'lti') || ($current->{'lcauth'} eq 'internal')) {
                $lcauthparm = $current->{'lcauthparm'};
                $lcauthparmstyle = 'display:table-row'; 
                if ($current->{'lcauth'} eq 'localauth') {
                    $lcauthparmtext = &mt('Local auth argument');
                } else {
                    $lcauthparmtext = &mt('Kerberos domain');
                }
            }
        }
        if (ref($current->{'selfenroll'}) eq 'ARRAY') {
            foreach my $role (@{$current->{'selfenroll'}}) {
                $checked{'selfenroll'}{$role} = ' checked="checked"';
            }
        }
        if (ref($current->{'maproles'}) eq 'HASH') {
            %rolemaps = %{$current->{'maproles'}};
        }
        if ($current->{'section'} ne '') {
            $checked{'crssec'}{'Y'} = '  checked="checked"'; 
            $crssecfieldsty = 'inline-block';
            if ($current->{'section'} eq 'course_section_sourcedid') {
                $checked{'crssecsrc'}{'sourcedid'} = ' checked="checked"';
            } else {
                $checked{'crssecsrc'}{'other'} = ' checked="checked"';
                $crssecsrc = $current->{'section'};
                $secsrcfieldsty = 'inline-block';
            }
        } else {
            $checked{'crssec'}{'N'} = ' checked="checked"';
        }
        if ($current->{'callback'} ne '') {
            $callback = $current->{'callback'};
            $checked{'callback'}{'Y'} = ' checked="checked"';
            $callbacksty = 'inline-block';
        } else {
            $checked{'callback'}{'N'} = ' checked="checked"';
        }
        if ($current->{'topmenu'}) {
            $checked{'topmenu'}{'Y'} = ' checked="checked"';
        } else {
            $checked{'topmenu'}{'N'} = ' checked="checked"';
        }
        if ($current->{'inlinemenu'}) {
            $checked{'inlinemenu'}{'Y'} = ' checked="checked"';
        } else {
            $checked{'inlinemenu'}{'N'} = ' checked="checked"';
        }
        if (($current->{'topmenu'}) || ($current->{'inlinemenu'})) {
            $menusty = 'inline-block';
            if (ref($current->{'lcmenu'}) eq 'ARRAY') {
                foreach my $item (@{$current->{'lcmenu'}}) {
                    if (exists($menutitles{$item})) {
                        $checked{'menuitem'}{$item} = ' checked="checked"';
                    }
                }
            }
        } else {
            $menusty = 'none';
        }
    } else {
        $checked{'makecrs'}{'N'} = ' checked="checked"';
        $checked{'crssec'}{'N'} = ' checked="checked"';
        $checked{'callback'}{'N'} = ' checked="checked"';
        $checked{'topmenu'}{'N'} = ' checked="checked"';
        $checked{'inlinemenu'}{'Y'} = ' checked="checked"'; 
        $checked{'menuitem'}{'grades'} = ' checked="checked"';
        $menusty = 'inline-block'; 
    }
    my @coursetypes = ('official','unofficial','community','textbook','placement','lti');
    my %coursetypetitles = &Apache::lonlocal::texthash (
                               official   => 'Official',
                               unofficial => 'Unofficial',
                               community  => 'Community',
                               textbook   => 'Textbook',
                               placement  => 'Placement Test',
                               lti        => 'LTI Provider',
    );
    my @authtypes = ('internal','krb4','krb5','localauth');
    my %shortauth = (
                     internal => 'int',
                     krb4 => 'krb4',
                     krb5 => 'krb5',
                     localauth  => 'loc'
                    );
    my %authnames = &authtype_names();
    my @ltiroles = qw(Learner Instructor ContentDeveloper TeachingAssistant Mentor Member Manager Administrator);
    my @lticourseroles = qw(Learner Instructor TeachingAssistant Mentor);
    my @courseroles = ('cc','in','ta','ep','st');
    my $onclickuser = ' onclick="toggleLTI(this.form,'."'user','$num'".');"';
    my $onclickcrs = ' onclick="toggleLTI(this.form,'."'crs','$num'".');"';
    my $onclicksec = ' onclick="toggleLTI(this.form,'."'sec','$num'".');"';
    my $onclickcallback = ' onclick="toggleLTI(this.form,'."'callback','$num'".');"';
    my $onclicksecsrc = ' onclick="toggleLTI(this.form,'."'secsrc','$num'".')"';
    my $onclicklcauth = ' onclick="toggleLTI(this.form,'."'lcauth','$num'".')"';
    my $onclickmenu = ' onclick="toggleLTI(this.form,'."'lcmenu','$num'".');"';
    my $output = '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('Logout options').'</legend>'.
                 '<div class="LC_floatleft"><span class="LC_nobreak">'.&mt('Callback to logout LON-CAPA on log out from Consumer').':&nbsp;'.
                 '<label><input type="radio" name="lti_callback_'.$num.'" value="0"'.
                 $checked{'callback'}{'N'}.$onclickcallback.' />'.&mt('No').'</label>'.('&nbsp;'x2).
                 '<label><input type="radio" name="lti_callback_'.$num.'" value="1"'.
                 $checked{'callback'}{'Y'}.$onclickcallback.' />'.&mt('Yes').'</label></span></div>'.
                 '<div class="LC_floatleft" style="display:'.$callbacksty.';" id="lti_callbackfield_'.$num.'">'.
                 '<span class="LC_nobreak">'.&mt('Parameter').': '.
                 '<input type="text" name="lti_callbackparam_'.$num.'" value="'.$callback.'" /></span>'.
                 '</div><div style="padding:0;clear:both;margin:0;border:0"></div></fieldset>'.
                 '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('Mapping users').'</legend>'.
                 '<div class="LC_floatleft"><span class="LC_nobreak">'.&mt('LON-CAPA username').':&nbsp;';
    foreach my $option ('sourcedid','email','other') {
        $output .= '<label><input type="radio" name="lti_mapuser_'.$num.'" value="'.$option.'"'.
                   $checked{'mapuser'}{$option}.$onclickuser.' />'.$lt{$option}.'</label>'.
                   ($option eq 'other' ? '' : ('&nbsp;'x2) );
    }
    $output .= '</span></div>'.
               '<div class="LC_floatleft" style="display:'.$userfieldsty.';" id="lti_userfield_'.$num.'">'.
               '<input type="text" name="lti_customuser_'.$num.'" '.
               'value="'.$userfield.'" /></div></fieldset>'.
               '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('Roles which may create user accounts').'</legend>';
    foreach my $ltirole (@ltiroles) {
        $output .= '<span class="LC_nobreak"><label><input type="checkbox" name="lti_makeuser_'.$num.'" value="'.$ltirole.'"'.
                   $checked{'makeuser'}{$ltirole}.' />'.$ltirole.'</label>&nbsp;</span> ';     
    }
    $output .= '</fieldset>'.
               '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('New user accounts created for LTI users').'</legend>'.
               '<table>'.
               &modifiable_userdata_row('lti','instdata_'.$num,$current,$numinrow,$itemcount).
               '</table>'.
               '<table class="LC_nested"><tr><td class="LC_left_item">LON-CAPA Authentication</td>'.
               '<td class="LC_left_item">';
    foreach my $auth ('lti',@authtypes) {
        my $authtext;
        if ($auth eq 'lti') {
            $authtext = &mt('None');
        } else {
            $authtext = $authnames{$shortauth{$auth}};
        }
        $output .= '<span class="LC_nobreak"><label><input type="radio" name="lti_lcauth_'.$num.
                   '" value="'.$auth.'"'.$checked{'lcauth'}{$auth}.$onclicklcauth.' />'.
                   $authtext.'</label></span> &nbsp;';
    }
    $output .= '</td></tr>'.
               '<tr id="lti_lcauth_parmrow_'.$num.'" style="'.$lcauthparmstyle.'">'.
               '<td class="LC_right_item" colspan="2"><span class="LC_nobreak">'.
               '<span id="lti_lcauth_parmtext_'.$num.'">'.$lcauthparmtext.'</span>'.
               '<input type="text" name="lti_lcauthparm_'.$num.'" value="" /></span></td></tr>'.
               '</table></fieldset>'.
               '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.
               &mt('LON-CAPA menu items (Course Coordinator can override)').'</legend>'.
               '<div class="LC_floatleft"><span class="LC_nobreak">'.$lt{'topmenu'}.':&nbsp;'.
               '<label><input type="radio" name="lti_topmenu_'.$num.'" value="0"'.
               $checked{'topmenu'}{'N'}.$onclickmenu.' />'.&mt('No').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_topmenu_'.$num.'" value="1"'.
               $checked{'topmenu'}{'Y'}.$onclickmenu.' />'.&mt('Yes').'</label></span></div>'.
               '<div style="padding:0;clear:both;margin:0;border:0"></div>'.
               '<div class="LC_floatleft"><span class="LC_nobreak">'.$lt{'inlinemenu'}.':&nbsp;'.
               '<label><input type="radio" name="lti_inlinemenu_'.$num.'" value="0"'.
               $checked{'inlinemenu'}{'N'}.$onclickmenu.' />'.&mt('No').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_inlinemenu_'.$num.'" value="1"'.
               $checked{'inlinemenu'}{'Y'}.$onclickmenu.' />'.&mt('Yes').'</label></span></div>';
     $output .='<div style="padding:0;clear:both;margin:0;border:0"></div>'.
               '<div class="LC_floatleft" style="display:'.$menusty.';" id="lti_menufield_'.$num.'">'.
               '<span class="LC_nobreak">'.&mt('Menu items').':&nbsp;';
    foreach my $type ('fullname','coursetitle','role','logout','grades') {
        $output .= '<label><input type="checkbox" name="lti_menuitem_'.$num.'" value="'.$type.'"'.
                   $checked{'menuitem'}{$type}.' />'.$menutitles{$type}.'</label>'.
                   ('&nbsp;'x2);
    }
    $output .= '</span></div></fieldset>'.
               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Mapping courses').'</legend>'.
               '<div class="LC_floatleft"><span class="LC_nobreak">'.
               &mt('Unique course identifier').':&nbsp;';
    foreach my $option ('course_offering_sourcedid','context_id','other') {
        $output .= '<label><input type="radio" name="lti_mapcrs_'.$num.'" value="'.$option.'"'.
                   $checked{'mapcrs'}{$option}.$onclickcrs.' />'.$option.'</label>'.
                   ($option eq 'other' ? '' : ('&nbsp;'x2) );
    }
    $output .= '</span></div><div class="LC_floatleft" style="display:'.$crsfieldsty.';" id="lti_crsfield_'.$num.'">'.
               '<input type="text" name="lti_mapcrsfield_'.$num.'" value="'.$cidfield.'" />'.
               '</div><div style="padding:0;clear:both;margin:0;border:0"></div>'.
               '<span class="LC_nobreak">'.&mt('LON-CAPA course type(s)').':&nbsp;';
    foreach my $type (@coursetypes) {
        $output .= '<label><input type="checkbox" name="lti_mapcrstype_'.$num.'" value="'.$type.'"'.
                   $checked{'mapcrstype'}{$type}.' />'.$coursetypetitles{$type}.'</label>'.
                   ('&nbsp;'x2);
    }
    $output .= '</span><br /><br />'.
               '<span class="LC_nobreak">'.&mt('Store mapping of course identifier to LON-CAPA CourseID').':&nbsp;'.
               '<label><input type="radio" name="lti_storecrs_'.$num.'" value="0"'.
               $checked{'storecrs'}{'N'}.' />'.&mt('No').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_storecrs_'.$num.'" value="1"'.
               $checked{'storecrs'}{'Y'}.' />'.&mt('Yes').'</label></span>'.
               '</fieldset>'.
               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Mapping course roles').'</legend><table><tr>';
    foreach my $ltirole (@lticourseroles) {
        my ($selected,$selectnone);
        if ($rolemaps{$ltirole} eq '') {
            $selectnone = ' selected="selected"';
        }
        $output .= '<td style="text-align: center">'.$ltirole.'<br />'.
                   '<select name="lti_maprole_'.$ltirole.'_'.$num.'">'.
                   '<option value=""'.$selectnone.'>'.&mt('Select').'</option>';
        foreach my $role (@courseroles) {
            unless ($selectnone) {
                if ($rolemaps{$ltirole} eq $role) {
                    $selected = ' selected="selected"';
                } else {
                    $selected = '';
                }
            }
            $output .= '<option value="'.$role.'"'.$selected.'>'.
                       &Apache::lonnet::plaintext($role,'Course').
                       '</option>';
        }
        $output .= '</select></td>';
    }
    $output .= '</tr></table></fieldset>'.
               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Creating courses').'</legend>'.
               '<span class="LC_nobreak">'.&mt('Course created (if absent) on Instructor access').':&nbsp;'.
               '<label><input type="radio" name="lti_makecrs_'.$num.'" value="0"'.
               $checked{'makecrs'}{'N'}.' />'.&mt('No').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_makecrs_'.$num.'" value="1"'.
               $checked{'makecrs'}{'Y'}.' />'.&mt('Yes').'</label></span>'.
               '</fieldset>'.
               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Roles which may self-enroll').'</legend>';
    foreach my $lticrsrole (@lticourseroles) {
        $output .= '<span class="LC_nobreak"><label><input type="checkbox" name="lti_selfenroll_'.$num.'" value="'.$lticrsrole.'"'.
                   $checked{'selfenroll'}{$lticrsrole}.' />'.$lticrsrole.'</label>&nbsp;</span> ';
    }
    $output .= '</fieldset>'.
               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Course options').'</legend>'.
               '<div class="LC_floatleft"><span class="LC_nobreak">'.&mt('Assign users to sections').':&nbsp;'.
               '<label><input type="radio" name="lti_crssec_'.$num.'" value="0"'.
               $checked{'crssec'}{'N'}.$onclicksec.' />'.&mt('No').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_crssec_'.$num.'" value="1"'.
               $checked{'crssec'}{'Y'}.$onclicksec.' />'.&mt('Yes').'</label></span></div>'.
               '<div class="LC_floatleft" style="display:'.$crssecfieldsty.';" id="lti_crssecfield_'.$num.'">'.
               '<span class="LC_nobreak">'.&mt('From').':<label>'.
               '<input type="radio" name="lti_crssecsrc_'.$num.'" value="course_section_sourcedid"'.
               $checked{'crssecsrc'}{'sourcedid'}.$onclicksecsrc.' />'.
               &mt('Standard field').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_crssecsrc_'.$num.'" value="other"'.
               $checked{'crssecsrc'}{'other'}.$onclicksecsrc.' />'.&mt('Other').
               '</label></span></div><div class="LC_floatleft" style="display:'.$secsrcfieldsty.';" id="lti_secsrcfield_'.$num.'">'.
               '<input type="text" name="lti_customsection_'.$num.'" value="'.$crssecsrc.'" />'.
               '</div><div style="padding:0;clear:both;margin:0;border:0"></div>';
    my ($pb1p1chk,$pb1p0chk,$onclickpb);
    foreach my $extra ('roster','passback') {
        my $checkedon = '';
        my $checkedoff = ' checked="checked"';
        if ($extra eq 'passback') {
            $pb1p1chk = ' checked="checked"';
            $pb1p0chk = '';
            $onclickpb = ' onclick="toggleLTI(this.form,'."'passback','$num'".');"'; 
        } else {
            $onclickpb = ''; 
        }
        if (ref($current) eq 'HASH') {
            if (($current->{$extra})) {
                $checkedon = $checkedoff;
                $checkedoff = '';
                if ($extra eq 'passback') {
                    $passbacksty = 'inline-block';
                }
                if ($current->{'passbackformat'} eq '1.0') {
                    $pb1p0chk =  ' checked="checked"';
                    $pb1p1chk = '';
                }
            }
        }
        $output .= $lt{$extra}.'&nbsp;'.
                   '<label><input type="radio" name="lti_'.$extra.'_'.$num.'" value="0"'.$checkedoff.$onclickpb.' />'.
                   &mt('No').'</label>'.('&nbsp;'x2).
                   '<label><input type="radio" name="lti_'.$extra.'_'.$num.'" value="1"'.$checkedon.$onclickpb.' />'.
                   &mt('Yes').'</label><br />';
    }
    $output .= '<div class="LC_floatleft" style="display:'.$passbacksty.';" id="lti_passback_'.$num.'">'.
               '<span class="LC_nobreak">'.&mt('Grade format').
               '<label><input type="radio" name="lti_passbackformat_'.$num.'" value="1.1"'.$pb1p1chk.' />'.
               &mt('Outcomes Service (1.1)').'</label>'.('&nbsp;'x2).
               '<label><input type="radio" name="lti_passbackformat_'.$num.'" value="1.0"'.$pb1p0chk.'/>'.
               &mt('Outcomes Extension (1.0)').'</label></span></div>'.
               '<div style="padding:0;clear:both;margin:0;border:0"></div></fieldset>';
    $output .= '</span></div></fieldset>';
#        '<fieldset><legend>'.&mt('Assigning author roles').'</legend>';
#
#    $output .= '</fieldset>'.
#        '<fieldset><legend>'.&mt('Assigning domain roles').'</legend>';
    return $output;
}

sub ltimenu_titles {
    return &Apache::lonlocal::texthash(
                                        fullname    => 'Full name',
                                        coursetitle => 'Course title',
                                        role        => 'Role',
                                        logout      => 'Logout',
                                        grades      => 'Grades',
    );
}

sub print_coursedefaults {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my ($css_class,$datatable,%checkedon,%checkedoff,%defaultchecked,@toggles);
    my $itemcount = 1;
    my %choices =  &Apache::lonlocal::texthash (
        canuse_pdfforms      => 'Course/Community users can create/upload PDF forms',
        uploadquota          => 'Default quota for files uploaded directly to course/community using Course Editor (MB)',
        anonsurvey_threshold => 'Responder count needed before showing submissions for anonymous surveys',
        coursecredits        => 'Credits can be specified for courses',
        uselcmath            => 'Math preview uses LON-CAPA previewer (javascript) in place of DragMath (Java)',
        usejsme              => 'Molecule editor uses JSME (HTML5) in place of JME (Java)',
        inline_chem          => 'Use inline previewer for chemical reaction response in place of pop-up',
        texengine            => 'Default method to display mathematics',
        postsubmit           => 'Disable submit button/keypress following student submission',
        canclone             => "People who may clone a course (besides course's owner and coordinators)",
        mysqltables          => 'Lifetime (s) of "Temporary" MySQL tables (student performance data) on homeserver',
    );
    my %staticdefaults = (
                           anonsurvey_threshold => 10,
                           uploadquota          => 500,
                           postsubmit           => 60,
                           mysqltables          => 172800,
                         );
    if ($position eq 'top') {
        %defaultchecked = (
                            'canuse_pdfforms' => 'off',
                            'uselcmath'       => 'on',
                            'usejsme'         => 'on',
                            'inline_chem'     => 'on',
                            'canclone'        => 'none',
                          );
        @toggles = ('canuse_pdfforms','uselcmath','usejsme','inline_chem');
        my $deftex = $Apache::lonnet::deftex;
        if (ref($settings) eq 'HASH') {
            if ($settings->{'texengine'}) {
                if ($settings->{'texengine'} =~ /^(MathJax|mimetex|tth)$/) {
                    $deftex = $settings->{'texengine'};
                }
            }
        }
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        my $mathdisp = '<tr'.$css_class.'><td style="vertical-align: top">'.
                       '<span class="LC_nobreak">'.$choices{'texengine'}.
                       '</span></td><td class="LC_right_item">'.
                       '<select name="texengine">'."\n";
        my %texoptions = (
                            MathJax  => 'MathJax',
                            mimetex  => &mt('Convert to Images'),
                            tth      => &mt('TeX to HTML'),
                         );
        foreach my $renderer ('MathJax','mimetex','tth') {
            my $selected = '';
            if ($renderer eq $deftex) {
                $selected = ' selected="selected"';
            }
            $mathdisp .= '<option value="'.$renderer.'"'.$selected.'>'.$texoptions{$renderer}.'</option>'."\n";
        }
        $mathdisp .= '</select></td></tr>'."\n";
        $itemcount ++;
        ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
                                                     \%choices,$itemcount);
        $datatable = $mathdisp.$datatable;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .=
            '<tr'.$css_class.'><td style="vertical-align: top">'.
            '<span class="LC_nobreak">'.$choices{'canclone'}.
            '</span></td><td class="LC_left_item">';
        my $currcanclone = 'none';
        my $onclick;
        my @cloneoptions = ('none','domain');
        my %clonetitles = &Apache::lonlocal::texthash (
                             none     => 'No additional course requesters',
                             domain   => "Any course requester in course's domain",
                             instcode => 'Course requests for official courses ...',
                          );
        my (%codedefaults,@code_order,@posscodes);
        if (&Apache::lonnet::auto_instcode_defaults($dom,\%codedefaults,
                                                    \@code_order) eq 'ok') {
            if (@code_order > 0) {
                push(@cloneoptions,'instcode');
                $onclick = ' onclick="toggleDisplay(this.form,'."'cloneinstcode'".');"';
            }
        }
        if (ref($settings) eq 'HASH') {
            if ($settings->{'canclone'}) {
                if (ref($settings->{'canclone'}) eq 'HASH') {
                    if (ref($settings->{'canclone'}{'instcode'}) eq 'ARRAY') {
                        if (@code_order > 0) {
                            $currcanclone = 'instcode';
                            @posscodes = @{$settings->{'canclone'}{'instcode'}};
                        }
                    }
                } elsif ($settings->{'canclone'} eq 'domain') {
                    $currcanclone = $settings->{'canclone'};
                }
            }
        }
        foreach my $option (@cloneoptions) {
            my ($checked,$additional);
            if ($currcanclone eq $option) {
                $checked = ' checked="checked"';
            }
            if ($option eq 'instcode') {
                if (@code_order) {
                    my $show = 'none';
                    if ($checked) {
                        $show = 'block';
                    }
                    $additional = '<div id="cloneinstcode" style="display:'.$show.';" />'.
                                  &mt('Institutional codes for new and cloned course have identical:').
                                  '<br />';
                    foreach my $item (@code_order) {
                        my $codechk;
                        if ($checked) {
                            if (grep(/^\Q$item\E$/,@posscodes)) {
                                $codechk = ' checked="checked"';
                            }
                        }
                        $additional .= '<label>'.
                                       '<input type="checkbox" name="clonecode" value="'.$item.'"'.$codechk.' />'.
                                       $item.'</label>';
                    }
                    $additional .= ('&nbsp;'x2).'('.&mt('check as many as needed').')</div>';
                }
            }
            $datatable .=
                '<span class="LC_nobreak"><label><input type="radio" name="canclone"'.$checked.
                ' value="'.$option.'"'.$onclick.' />'.$clonetitles{$option}.
                '</label>&nbsp;'.$additional.'</span><br />';
        }
        $datatable .= '</td>'.
                      '</tr>';
        $itemcount ++;
    } else {
        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
        my ($currdefresponder,%defcredits,%curruploadquota,%deftimeout,%currmysql);
        my $currusecredits = 0;
        my $postsubmitclient = 1;
        my @types = ('official','unofficial','community','textbook','placement');
        if (ref($settings) eq 'HASH') {
            $currdefresponder = $settings->{'anonsurvey_threshold'};
            if (ref($settings->{'uploadquota'}) eq 'HASH') {
                foreach my $type (keys(%{$settings->{'uploadquota'}})) {
                    $curruploadquota{$type} = $settings->{'uploadquota'}{$type};
                }
            }
            if (ref($settings->{'coursecredits'}) eq 'HASH') {
                foreach my $type (@types) {
                    next if ($type eq 'community');
                    $defcredits{$type} = $settings->{'coursecredits'}->{$type};
                    if ($defcredits{$type} ne '') {
                        $currusecredits = 1;
                    }
                }
            }
            if (ref($settings->{'postsubmit'}) eq 'HASH') {
                if ($settings->{'postsubmit'}->{'client'} eq 'off') {
                    $postsubmitclient = 0;
                    foreach my $type (@types) {
                        $deftimeout{$type} = $staticdefaults{'postsubmit'};
                    }
                } else {
                    foreach my $type (@types) {
                        if (ref($settings->{'postsubmit'}->{'timeout'}) eq 'HASH') {
                            if ($settings->{'postsubmit'}->{'timeout'}->{$type} =~ /^\d+$/) {
                                $deftimeout{$type} = $settings->{'postsubmit'}->{'timeout'}->{$type};
                            } else {
                                $deftimeout{$type} = $staticdefaults{'postsubmit'};
                            }
                        } else {
                            $deftimeout{$type} = $staticdefaults{'postsubmit'};
                        }
                    }
                }
            } else {
                foreach my $type (@types) {
                    $deftimeout{$type} = $staticdefaults{'postsubmit'};
                }
            }
            if (ref($settings->{'mysqltables'}) eq 'HASH') {
                foreach my $type (keys(%{$settings->{'mysqltables'}})) {
                    $currmysql{$type} = $settings->{'mysqltables'}{$type};
                }
            } else {
                foreach my $type (@types) {
                    $currmysql{$type} = $staticdefaults{'mysqltables'};
                }
            }
        } else {
            foreach my $type (@types) {
                $deftimeout{$type} = $staticdefaults{'postsubmit'};
            }
        }
        if (!$currdefresponder) {
            $currdefresponder = $staticdefaults{'anonsurvey_threshold'};
        } elsif ($currdefresponder < 1) {
            $currdefresponder = 1;
        }
        foreach my $type (@types) {
            if ($curruploadquota{$type} eq '') {
                $curruploadquota{$type} = $staticdefaults{'uploadquota'};
            }
        }
        $datatable .=
                '<tr'.$css_class.'><td><span class="LC_nobreak">'.
                $choices{'anonsurvey_threshold'}.
                '</span></td>'.
                '<td class="LC_right_item"><span class="LC_nobreak">'.
                '<input type="text" name="anonsurvey_threshold"'.
                ' value="'.$currdefresponder.'" size="5" /></span>'.
                '</td></tr>'."\n";
        $itemcount ++;
        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
        $datatable .= '<tr'.$css_class.'><td><span class="LC_nobreak">'.
                      $choices{'uploadquota'}.
                      '</span></td>'.
                      '<td style="text-align: right" class="LC_right_item">'.
                      '<table><tr>';
        foreach my $type (@types) {
            $datatable .= '<td style="text-align: center">'.&mt($type).'<br />'.
                           '<input type="text" name="uploadquota_'.$type.'"'.
                           ' value="'.$curruploadquota{$type}.'" size="5" /></td>';
        }
        $datatable .= '</tr></table></td></tr>'."\n";
        $itemcount ++;
        my $onclick = "toggleDisplay(this.form,'credits');";
        my $display = 'none';
        if ($currusecredits) {
            $display = 'block';
        }
        my $additional = '<div id="credits" style="display: '.$display.'">'.
                         '<i>'.&mt('Default credits').'</i><br /><table><tr>';
        foreach my $type (@types) {
            next if ($type eq 'community');
            $additional .= '<td style="text-align: center">'.&mt($type).'<br />'.
                           '<input type="text" name="'.$type.'_credits"'.
                           ' value="'.$defcredits{$type}.'" size="3" /></td>';
        }
        $additional .= '</tr></table></div>'."\n";
        %defaultchecked = ('coursecredits' => 'off');
        @toggles = ('coursecredits');
        my $current = {
                        'coursecredits' => $currusecredits,
                      };
        (my $table,$itemcount) =
            &radiobutton_prefs($current,\@toggles,\%defaultchecked,
                               \%choices,$itemcount,$onclick,$additional,'left');
        $datatable .= $table;
        $onclick = "toggleDisplay(this.form,'studentsubmission');";
        my $display = 'none';
        if ($postsubmitclient) {
            $display = 'block';
        }
        $additional = '<div id="studentsubmission" style="display: '.$display.'">'.
                      &mt('Number of seconds submit is disabled').'<br />'.
                      '<i>'.&mt('Enter 0 to remain disabled until page reload.').'</i><br />'.
                      '<table><tr>';
        foreach my $type (@types) {
            $additional .= '<td style="text-align: center">'.&mt($type).'<br />'.
                           '<input type="text" name="'.$type.'_timeout" value="'.
                           $deftimeout{$type}.'" size="5" /></td>';
        }
        $additional .= '</tr></table></div>'."\n";
        %defaultchecked = ('postsubmit' => 'on');
        @toggles = ('postsubmit');
        $current = {
                       'postsubmit' => $postsubmitclient,
                   };
        ($table,$itemcount) =
            &radiobutton_prefs($current,\@toggles,\%defaultchecked,
                               \%choices,$itemcount,$onclick,$additional,'left');
        $datatable .= $table;
        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
        $datatable .= '<tr'.$css_class.'><td><span class="LC_nobreak">'.
                      $choices{'mysqltables'}.
                      '</span></td>'.
                      '<td style="text-align: right" class="LC_right_item">'.
                      '<table><tr>';
        foreach my $type (@types) {
            $datatable .= '<td style="text-align: center">'.&mt($type).'<br />'.
                           '<input type="text" name="mysqltables_'.$type.'"'.
                           ' value="'.$currmysql{$type}.'" size="8" /></td>';
        }
        $datatable .= '</tr></table></td></tr>'."\n";
        $itemcount ++;

    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub print_selfenrollment {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my ($css_class,$datatable);
    my $itemcount = 1;
    my @types = ('official','unofficial','community','textbook','placement');
    if (($position eq 'top') || ($position eq 'middle')) {
        my ($rowsref,$titlesref) = &Apache::lonuserutils::get_selfenroll_titles();
        my %descs = &Apache::lonuserutils::selfenroll_default_descs();
        my @rows;
        my $key;
        if ($position eq 'top') {
            $key = 'admin'; 
            if (ref($rowsref) eq 'ARRAY') {
                @rows = @{$rowsref};
            }
        } elsif ($position eq 'middle') {
            $key = 'default';
            @rows = ('types','registered','approval','limit');
        }
        foreach my $row (@rows) {
            if (defined($titlesref->{$row})) {
                $itemcount ++;
                $css_class = $itemcount%2?' class="LC_odd_row"':'';
                $datatable .= '<tr'.$css_class.'>'.
                              '<td>'.$titlesref->{$row}.'</td>'.
                              '<td class="LC_left_item">'.
                              '<table><tr>';
                my (%current,%currentcap);
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{$key}) eq 'HASH') {
                        foreach my $type (@types) {
                            if (ref($settings->{$key}->{$type}) eq 'HASH') {
                                $current{$type} = $settings->{$key}->{$type}->{$row};
                            }
                            if (($row eq 'limit') && ($key eq 'default')) {
                                if (ref($settings->{$key}->{$type}) eq 'HASH') {
                                    $currentcap{$type} = $settings->{$key}->{$type}->{'cap'};
                                }
                            }
                        }
                    }
                }
                my %roles = (
                             '0' => &Apache::lonnet::plaintext('dc'),
                            ); 
            
                foreach my $type (@types) {
                    unless (($row eq 'registered') && ($key eq 'default')) {
                        $datatable .= '<th>'.&mt($type).'</th>';
                    }
                }
                unless (($row eq 'registered') && ($key eq 'default')) {
                    $datatable .= '</tr><tr>';
                }
                foreach my $type (@types) {
                    if ($type eq 'community') {
                        $roles{'1'} = &mt('Community personnel');
                    } else {
                        $roles{'1'} = &mt('Course personnel');
                    }
                    $datatable .= '<td style="vertical-align: top">';
                    if ($position eq 'top') {
                        my %checked;
                        if ($current{$type} eq '0') {
                            $checked{'0'} = ' checked="checked"';
                        } else {
                            $checked{'1'} = ' checked="checked"';
                        }
                        foreach my $role ('1','0') {
                            $datatable .= '<span class="LC_nobreak"><label>'.
                                          '<input type="radio" name="selfenrolladmin_'.$row.'_'.$type.'" '.
                                          'value="'.$role.'"'.$checked{$role}.' />'.
                                          $roles{$role}.'</label></span> ';
                        }
                    } else {
                        if ($row eq 'types') {
                            my %checked;
                            if ($current{$type} =~ /^(all|dom)$/) {
                                $checked{$1} = ' checked="checked"';
                            } else {
                                $checked{''} = ' checked="checked"';
                            }
                            foreach my $val ('','dom','all') {
                                $datatable .= '<span class="LC_nobreak"><label>'.
                                              '<input type ="radio" name="selfenrolldefault_'.$row.'_'.$type.'" '.
                                              'value="'.$val.'"'.$checked{$val}.' />'.$descs{$row}{$val}.'</label></span> ';
                            }
                        } elsif ($row eq 'registered') {
                            my %checked;
                            if ($current{$type} eq '1') {
                                $checked{'1'} = ' checked="checked"';
                            } else {
                                $checked{'0'} = ' checked="checked"';
                            }
                            foreach my $val ('0','1') {
                                $datatable .= '<span class="LC_nobreak"><label>'.
                                              '<input type ="radio" name="selfenrolldefault_'.$row.'_'.$type.'" '.
                                              'value="'.$val.'"'.$checked{$val}.' />'.$descs{$row}{$val}.'</label></span> ';
                            }
                        } elsif ($row eq 'approval') {
                            my %checked;
                            if ($current{$type} =~ /^([12])$/) {
                                $checked{$1} = ' checked="checked"';
                            } else {
                                $checked{'0'} = ' checked="checked"';
                            }
                            for my $val (0..2) {
                                $datatable .= '<span class="LC_nobreak"><label>'.
                                              '<input type="radio" name="selfenrolldefault_'.$row.'_'.$type.'" '.
                                              'value="'.$val.'"'.$checked{$val}.' />'.$descs{$row}{$val}.'</label></span> ';
                            }
                        } elsif ($row eq 'limit') {
                            my %checked;
                            if ($current{$type} =~ /^(allstudents|selfenrolled)$/) {
                                $checked{$1} = ' checked="checked"';
                            } else {
                                $checked{'none'} = ' checked="checked"';
                            }
                            my $cap;
                            if ($currentcap{$type} =~ /^\d+$/) {
                                $cap = $currentcap{$type};
                            }
                            foreach my $val ('none','allstudents','selfenrolled') {
                                $datatable .= '<span class="LC_nobreak"><label>'.
                                              '<input type="radio" name="selfenrolldefault_'.$row.'_'.$type.'" '.
                                              'value="'.$val.'"'.$checked{$val}.' />'.$descs{$row}{$val}.'</label></span> ';
                            }
                            $datatable .= '<br />'.
                                          '<span class="LC_nobreak">'.&mt('Maximum allowed: ').
                                          '<input type="text" name="selfenrolldefault_cap_'.$type.'" size = "5" value="'.$cap.'" />'.
                                          '</span>'; 
                        }
                    }
                    $datatable .= '</td>';
                }
                $datatable .= '</tr>';
            }
            $datatable .= '</table></td></tr>';
        }
    } elsif ($position eq 'bottom') {
        $datatable .= &print_validation_rows('selfenroll',$dom,$settings,\$itemcount);
    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub print_validation_rows {
    my ($caller,$dom,$settings,$rowtotal) = @_;
    my ($itemsref,$namesref,$fieldsref);
    if ($caller eq 'selfenroll') { 
        ($itemsref,$namesref,$fieldsref) = &Apache::lonuserutils::selfenroll_validation_types();
    } elsif ($caller eq 'requestcourses') {
        ($itemsref,$namesref,$fieldsref) = &Apache::loncoursequeueadmin::requestcourses_validation_types();
    }
    my %currvalidation;
    if (ref($settings) eq 'HASH') {
        if (ref($settings->{'validation'}) eq 'HASH') {
            %currvalidation = %{$settings->{'validation'}};
        }
    }
    my $datatable;
    my $itemcount = 0;
    foreach my $item (@{$itemsref}) {
        my $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
        $datatable .= '<tr'.$css_class.'><td><span class="LC_nobreak">'.
                      $namesref->{$item}.
                      '</span></td>'.
                      '<td class="LC_left_item">';
        if (($item eq 'url') || ($item eq 'button')) {
            $datatable .= '<span class="LC_nobreak">'.
                          '<input type="text" name="'.$caller.'_validation_'.$item.'"'.
                          ' value="'.$currvalidation{$item}.'" size="50" /></span>';
        } elsif ($item eq 'fields') {
            my @currfields;
            if (ref($currvalidation{$item}) eq 'ARRAY') {
                @currfields = @{$currvalidation{$item}};
            }
            foreach my $field (@{$fieldsref}) {
                my $check = '';
                if (grep(/^\Q$field\E$/,@currfields)) {
                    $check = ' checked="checked"';
                }
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="'.$caller.'_validation_fields"'.
                              ' value="'.$field.'"'.$check.' />'.$field.
                              '</label></span> ';
            }
        } elsif ($item eq 'markup') {
            $datatable .= '<textarea name="'.$caller.'_validation_markup" cols="50" rows="5">'.
                           $currvalidation{$item}.
                              '</textarea>';
        }
        $datatable .= '</td></tr>'."\n";
        if (ref($rowtotal)) {
            $itemcount ++;
        }
    }
    if ($caller eq 'requestcourses') {
        my %currhash;
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'validation'}) eq 'HASH') {
                if ($settings->{'validation'}{'dc'} ne '') {
                    $currhash{$settings->{'validation'}{'dc'}} = 1;
                }
            }
        }
        my $numinrow = 2;
        my ($numdc,$dctable,$rows) = &active_dc_picker($dom,$numinrow,'radio',
                                                       'validationdc',%currhash);
        my $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
        $datatable .= '<tr'.$css_class.'><td>';
        if ($numdc > 1) {
            $datatable .= &mt('Course creation processed as: (choose Dom. Coord.)');
        } else {
            $datatable .=  &mt('Course creation processed as: ');
        }
        $datatable .= '</td><td class="LC_left_item">'.$dctable.'</td></tr>';
        $itemcount ++;
    }
    if (ref($rowtotal)) {
        $$rowtotal += $itemcount;
    }
    return $datatable;
}

sub print_privacy {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my ($datatable,$css_class,$numinrow,@items,%names,$othertitle,$usertypes,$types);
    my $itemcount = 0;
    unless ($position eq 'top') {
        @items = ('domain','author','course','community');
        %names = &Apache::lonlocal::texthash (
                     domain => 'Assigned domain role(s)',
                     author => 'Assigned co-author role(s)',
                     course => 'Assigned course role(s)',
                     community => 'Assigned community role',
                 );
        $numinrow = 4;
        ($othertitle,$usertypes,$types) =
            &Apache::loncommon::sorted_inst_types($dom);
    }
    if (($position eq 'top') || ($position eq 'middle')) {
        my (%by_ip,%by_location,@intdoms,@instdoms);
        &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);
        if ($position eq 'top') {
            my %curr;
            my @options = ('none','user','domain','auto');
            my %titles = &Apache::lonlocal::texthash (
                none   => 'Not allowed',
                user   => 'User authorizes',
                domain => 'DC authorizes',
                auto   => 'Unrestricted',
                instdom => 'Other domain shares institution/provider',
                extdom => 'Other domain has different institution/provider',
            );
            my %names = &Apache::lonlocal::texthash (
                domain => 'Domain role',
                author => 'Co-author role',
                course => 'Course role',
                community => 'Community role',
            );
            my $primary_id = &Apache::lonnet::domain($dom,'primary');
            my $intdom = &Apache::lonnet::internet_dom($primary_id);
            foreach my $domtype ('instdom','extdom') {
                my (%checked,$skip);
                $css_class = $itemcount%2?' class="LC_odd_row"':'';
                $datatable .= '<tr'.$css_class.'><td>'.$titles{$domtype}.'</td>'.
                              '<td class="LC_left_item">';
                if ($domtype eq 'instdom') {
                    unless (@instdoms > 1) {
                        $datatable .= &mt('Nothing to set, as no domains besides [_1] are hosted by [_2]',$dom,$intdom);
                        $skip = 1;
                    }
                } elsif ($domtype eq 'extdom') {
                    if (keys(%by_location) == 0) {
                        $datatable .= &mt('Nothing to set, as no other hosts besides [_1]',$intdom);
                        $skip = 1;
                    }
                }
                unless ($skip) {
                    foreach my $roletype ('domain','author','course','community') {
                        $checked{'auto'} = ' checked="checked"';
                        if (ref($settings) eq 'HASH') {
                            if (ref($settings->{approval}) eq 'HASH') {
                                if (ref($settings->{approval}->{$domtype}) eq 'HASH') {
                                    if ($settings->{approval}->{$domtype}->{$roletype}=~ /^(none|user|domain)$/) {
                                        $checked{$1} = ' checked="checked"';
                                        $checked{'auto'} = '';
                                    }
                                }
                            }
                        }
                        $datatable .= '<fieldset><legend>'.$names{$roletype}.'</legend>';
                        foreach my $option (@options) {
                            $datatable .= '<span class="LC_nobreak"><label>'.
                                          '<input type="radio" name="privacy_approval_'.$domtype.'_'.$roletype.'" '.
                                          'value="'.$option.'"'.$checked{$option}.' />'.$titles{$option}.
                                          '</label></span>&nbsp; ';
                        }
                        $datatable .= '</fieldset>';
                    }
                }
                $datatable .= '</td></tr>';
                $itemcount ++;
            }
        } elsif ($position eq 'middle') {
            if ((@instdoms > 1) || (keys(%by_location) > 0)) {
                if ((ref($types) eq 'ARRAY') && (ref($usertypes) eq 'HASH')) {
                    foreach my $item (@{$types}) {
                        $datatable .= &modifiable_userdata_row('privacy','othdom_'.$item,$settings,
                                                               $numinrow,$itemcount,'','','','','',
                                                               '',$usertypes->{$item});
                        $itemcount ++;
                    }
                }
                $datatable .= &modifiable_userdata_row('privacy','othdom_default',$settings,
                                                       $numinrow,$itemcount,'','','','','',
                                                       '',$othertitle);
                $itemcount ++;
            } else {
                my (@insttypes,%insttitles);
                if ((ref($types) eq 'ARRAY') && (ref($usertypes) eq 'HASH')) {
                    @insttypes = @{$types};
                    %insttitles = %{$usertypes};
                }
                foreach my $item (@insttypes,'default') {
                    my $title;
                    if ($item eq 'default') {
                        $title = $othertitle;
                    } else {
                        $title = $insttitles{$item};
                    }
                    $css_class = $itemcount%2?' class="LC_odd_row"':'';
                    $datatable .= '<tr'.$css_class.'>'.
                                  '<td class="LC_left_item">'.$title.'</td>'.
                                  '<td class="LC_left_item">'.
                                  &mt('Nothing to set here, as there are no other domains').
                                  '</td></tr>';
                    $itemcount ++;
                }
            }
        }
    } else {
        my $prefix;
        if ($position eq 'lower') {
            $prefix = 'priv';
        } else {
            $prefix = 'unpriv';
        }
        foreach my $item (@items) {
            $datatable .= &modifiable_userdata_row('privacy',$prefix.'_'.$item,$settings,
                                                   $numinrow,$itemcount,'','','','','',
                                                   '',$names{$item});
            $itemcount ++;
        }
    }
    if (ref($rowtotal)) {
        $$rowtotal += $itemcount;
    }
    return $datatable;
}

sub print_passwords {
    my ($position,$dom,$confname,$settings,$rowtotal) = @_;
    my ($datatable,$css_class);
    my $itemcount = 0;
    my %titles = &Apache::lonlocal::texthash (
        captcha        => '"Forgot Password" CAPTCHA validation',
        link           => 'Reset link expiration (hours)',
        case           => 'Case-sensitive usernames/e-mail',
        prelink        => 'Information required (form 1)',
        postlink       => 'Information required (form 2)',
        emailsrc       => 'LON-CAPA e-mail address type(s)',
        customtext     => 'Domain specific text (HTML)',
        intauth_cost   => 'Encryption cost for bcrypt (positive integer)',
        intauth_check  => 'Check bcrypt cost if authenticated',
        intauth_switch => 'Existing crypt-based switched to bcrypt on authentication',
        permanent      => 'Permanent e-mail address',
        critical       => 'Critical notification address',
        notify         => 'Notification address',
        min            => 'Minimum password length',
        max            => 'Maximum password length',
        chars          => 'Required characters',
        expire         => 'Password expiration (days)',
        numsaved       => 'Number of previous passwords to save and disallow reuse',
    );
    if ($position eq 'top') {
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        my $shownlinklife = 2;
        my $prelink = 'both';
        my (%casesens,%postlink,%emailsrc,$nostdtext,$customurl);
        if (ref($settings) eq 'HASH') {
            if ($settings->{resetlink} =~ /^\d+(|\.\d*)$/) {
                $shownlinklife = $settings->{resetlink};
            }
            if (ref($settings->{resetcase}) eq 'ARRAY') {
                map { $casesens{$_} = 1; } (@{$settings->{resetcase}});
            }
            if ($settings->{resetprelink} =~ /^(both|either)$/) {
                $prelink = $settings->{resetprelink};
            }
            if (ref($settings->{resetpostlink}) eq 'HASH') {
                %postlink = %{$settings->{resetpostlink}};
            }
            if (ref($settings->{resetemail}) eq 'ARRAY') {
                map { $emailsrc{$_} = 1; } (@{$settings->{resetemail}});
            }
            if ($settings->{resetremove}) {
                $nostdtext = 1;
            }
            if ($settings->{resetcustom}) {
                $customurl = $settings->{resetcustom};
            }
        } else {
            if (ref($types) eq 'ARRAY') {
                foreach my $item (@{$types}) {
                    $casesens{$item} = 1;
                    $postlink{$item} = ['username','email'];
                }
            }
            $casesens{'default'} = 1;
            $postlink{'default'} = ['username','email'];
            $prelink = 'both';
            %emailsrc = (
                          permanent => 1,
                          critical  => 1,
                          notify    => 1,
            );
        }
        $datatable = &captcha_choice('passwords',$settings,$$rowtotal);
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'link'}.'</td>'.
                      '<td class="LC_left_item">'.
                      '<input type="textbox" value="'.$shownlinklife.'" '.
                      'name="passwords_link" size="3" /></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'case'}.'</td>'.
                      '<td class="LC_left_item">';
        if ((ref($types) eq 'ARRAY') && (ref($usertypes) eq 'HASH')) {
            foreach my $item (@{$types}) {
                my $checkedcase;
                if ($casesens{$item}) {
                    $checkedcase = ' checked="checked"';
                }
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="passwords_case_sensitive" value="'.
                              $item.'"'.$checkedcase.' />'.$usertypes->{$item}.'</label>'.
                              '</span>&nbsp;&nbsp; ';
            }
        }
        my $checkedcase;
        if ($casesens{'default'}) {
            $checkedcase = ' checked="checked"';
        }
        $datatable .= '<span class="LC_nobreak"><label><input type="checkbox" '.
                      'name="passwords_case_sensitive" value="default"'.$checkedcase.' />'.
                      $othertitle.'</label></span></td>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        my %checkedpre = (
                             both => ' checked="checked"',
                             either => '',
                         );
        if ($prelink eq 'either') {
            $checkedpre{either} = ' checked="checked"';
            $checkedpre{both} = '';
        }
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'prelink'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak">'.
                      '<label><input type="radio" name="passwords_prelink" value="both"'.$checkedpre{'both'}.' />'.
                      &mt('Both username and e-mail address').'</label></span>&nbsp;&nbsp; '.
                      '<span class="LC_nobreak"><label>'.
                      '<input type="radio" name="passwords_prelink" value="either"'.$checkedpre{'either'}.' />'.
                      &mt('Either username or e-mail address').'</label></span></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'postlink'}.'</td>'.
                      '<td class="LC_left_item">';
        my %postlinked;
        if ((ref($types) eq 'ARRAY') && (ref($usertypes) eq 'HASH')) {
            foreach my $item (@{$types}) {
                undef(%postlinked);
                $datatable .= '<fieldset style="display: inline-block;">'.
                              '<legend>'.$usertypes->{$item}.'</legend>';
                if (ref($postlink{$item}) eq 'ARRAY') {
                    map { $postlinked{$_} = 1; } (@{$postlink{$item}});
                }
                foreach my $field ('email','username') {
                    my $checked;
                    if ($postlinked{$field}) {
                        $checked = ' checked="checked"';
                    }
                    $datatable .= '<span class="LC_nobreak"><label>'.
                                  '<input type="checkbox" name="passwords_postlink_'.$item.'" value="'.
                                  $field.'"'.$checked.' />'.$field.'</label>'.
                                  '<span>&nbsp;&nbsp; ';
                }
                $datatable .= '</fieldset>';
            }
        }
        if (ref($postlink{'default'}) eq 'ARRAY') {
            map { $postlinked{$_} = 1; } (@{$postlink{'default'}});
        }
        $datatable .= '<fieldset style="display: inline-block;">'.
                      '<legend>'.$othertitle.'</legend>';
        foreach my $field ('email','username') {
            my $checked;
            if ($postlinked{$field}) {
                $checked = ' checked="checked"';
            }
            $datatable .= '<span class="LC_nobreak"><label>'.
                          '<input type="checkbox" name="passwords_postlink_default" value="'.
                          $field.'"'.$checked.' />'.$field.'</label>'.
                          '<span>&nbsp;&nbsp; ';
        }
        $datatable .= '</fieldset></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'emailsrc'}.'</td>'.
                      '<td class="LC_left_item">';
        foreach my $type ('permanent','critical','notify') {
            my $checkedemail;
            if ($emailsrc{$type}) {
                $checkedemail = ' checked="checked"';
            }
            $datatable .= '<span class="LC_nobreak"><label>'.
                          '<input type="checkbox" name="passwords_emailsrc" value="'.
                          $type.'"'.$checkedemail.' />'.$titles{$type}.'</label>'.
                          '<span>&nbsp;&nbsp; ';
        }
        $datatable .= '</td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        my $switchserver = &check_switchserver($dom,$confname);
        my ($showstd,$noshowstd);
        if ($nostdtext) {
            $noshowstd = ' checked="checked"';
        } else {
            $showstd = ' checked="checked"';
        }
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'customtext'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak">'.
                      &mt('Retain standard text:').
                      '<label><input type="radio" name="passwords_stdtext" value="1"'.$showstd.' />'.
                      &mt('Yes').'</label>'.'&nbsp;'.
                      '<label><input type="radio" name="passwords_stdtext" value="0"'.$noshowstd.' />'.
                      &mt('No').'</label></span><br />'.
                      '<span class="LC_fontsize_small">'.
                      &mt('(If you use the same account ...  reset a password from this page.)').'</span><br /><br />'.
                      &mt('Include custom text:');
        if ($customurl) {
            my $link =  &Apache::loncommon::modal_link($customurl,&mt('custom text'),600,500,
                                                       undef,undef,undef,undef,'background-color:#ffffff');
            $datatable .= '<span class="LC_nobreak">&nbsp;'.$link.
                          '<label><input type="checkbox" name="passwords_custom_del"'.
                          ' value="1" />'.&mt('Delete?').'</label></span>'.
                          ' <span class="LC_nobreak">&nbsp;'.&mt('Replace:').'</span>';
        }
        if ($switchserver) {
            $datatable .= '<span class="LC_nobreak">&nbsp;'.&mt('Upload to library server: [_1]',$switchserver).'</span>';
        } else {
            $datatable .='<span class="LC_nobreak">&nbsp;'.
                         '<input type="file" name="passwords_customfile" /></span>';
        }
        $datatable .= '</td></tr>';
    } elsif ($position eq 'middle') {
        my %domconf = &Apache::lonnet::get_dom('configuration',['defaults'],$dom);
        my @items = ('intauth_cost','intauth_check','intauth_switch');
        my %defaults;
        if (ref($domconf{'defaults'}) eq 'HASH') {
            %defaults = %{$domconf{'defaults'}};
            if ($defaults{'intauth_cost'} !~ /^\d+$/) {
                $defaults{'intauth_cost'} = 10;
            }
            if ($defaults{'intauth_check'} !~ /^(0|1|2)$/) {
                $defaults{'intauth_check'} = 0;
            }
            if ($defaults{'intauth_switch'} !~ /^(0|1|2)$/) {
                $defaults{'intauth_switch'} = 0;
            }
        } else {
            %defaults = (
                          'intauth_cost'   => 10,
                          'intauth_check'  => 0,
                          'intauth_switch' => 0,
                        );
        }
        foreach my $item (@items) {
            if ($itemcount%2) {
                $css_class = '';
            } else {
                $css_class = ' class="LC_odd_row" ';
            }
            $datatable .= '<tr'.$css_class.'>'.
                          '<td><span class="LC_nobreak">'.$titles{$item}.
                          '</span></td><td class="LC_left_item" colspan="3">';
            if ($item eq 'intauth_switch') {
                my @options = (0,1,2);
                my %optiondesc = &Apache::lonlocal::texthash (
                                   0 => 'No',
                                   1 => 'Yes',
                                   2 => 'Yes, and copy existing passwd file to passwd.bak file',
                                 );
                $datatable .= '<table width="100%">';
                foreach my $option (@options) {
                    my $checked = ' ';
                    if ($defaults{$item} eq $option) {
                        $checked = ' checked="checked"';
                    }
                    $datatable .= '<tr><td class="LC_left_item"><span class="LC_nobreak">'.
                                  '<label><input type="radio" name="'.$item.
                                  '" value="'.$option.'"'.$checked.' />'.
                                  $optiondesc{$option}.'</label></span></td></tr>';
                }
                $datatable .= '</table>';
            } elsif ($item eq 'intauth_check') {
                my @options = (0,1,2);
                my %optiondesc = &Apache::lonlocal::texthash (
                                   0 => 'No',
                                   1 => 'Yes, allow login then update passwd file using default cost (if higher)',
                                   2 => 'Yes, disallow login if stored cost is less than domain default',
                                 );
                $datatable .= '<table width="100%">';
                foreach my $option (@options) {
                    my $checked = ' ';
                    my $onclick;
                    if ($defaults{$item} eq $option) {
                        $checked = ' checked="checked"';
                    }
                    if ($option == 2) {
                        $onclick = ' onclick="javascript:warnIntAuth(this);"';
                    }
                    $datatable .= '<tr><td class="LC_left_item"><span class="LC_nobreak">'.
                                  '<label><input type="radio" name="'.$item.
                                  '" value="'.$option.'"'.$checked.$onclick.' />'.
                                  $optiondesc{$option}.'</label></span></td></tr>';
                }
                $datatable .= '</table>';
            } else {
                $datatable .= '<input type="text" name="'.$item.'" value="'.
                              $defaults{$item}.'" size="3" onblur="javascript:warnIntAuth(this);" />';
            }
            $datatable .= '</td></tr>';
            $itemcount ++;
        }
    } elsif ($position eq 'lower') {
        my ($min,$max,%chars,$expire,$numsaved);
        $min = $Apache::lonnet::passwdmin;
        if (ref($settings) eq 'HASH') {
            if ($settings->{min}) {
                $min = $settings->{min};
            }
            if ($settings->{max}) {
                $max = $settings->{max};
            }
            if (ref($settings->{chars}) eq 'ARRAY') {
                map { $chars{$_} = 1; } (@{$settings->{chars}});
            }
            if ($settings->{expire}) {
                $expire = $settings->{expire};
            }
            if ($settings->{numsaved}) {
                $numsaved = $settings->{numsaved};
            }
        }
        my %rulenames = &Apache::lonlocal::texthash(
                                                     uc => 'At least one upper case letter',
                                                     lc => 'At least one lower case letter',
                                                     num => 'At least one number',
                                                     spec => 'At least one non-alphanumeric',
                                                   );
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'min'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak">'.
                      '<input type="text" name="passwords_min" value="'.$min.'" size="3" '.
                      'onblur="javascript:warnIntPass(this);" />'.
                      '<span class="LC_fontsize_small"> '.&mt('(Enter an integer: 7 or larger)').'</span>'.
                      '</span></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'max'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak">'.
                      '<input type="text" name="passwords_max" value="'.$max.'" size="3" '.
                      'onblur="javascript:warnIntPass(this);" />'.
                      '<span class="LC_fontsize_small"> '.&mt('(Leave blank for no maximum)').'</span>'.
                      '</span></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'chars'}.'<br />'.
                      '<span class="LC_nobreak LC_fontsize_small">'.&mt('(Leave unchecked if not required)').
                      '</span></td>';
        my $numinrow = 2;
        my @possrules = ('uc','lc','num','spec');
        $datatable .= '<td class="LC_left_item"><table>';
        for (my $i=0; $i<@possrules; $i++) {
            my ($rem,$checked);
            if ($chars{$possrules[$i]}) {
                $checked = ' checked="checked"';
            }
            $rem = $i%($numinrow);
            if ($rem == 0) {
                if ($i > 0) {
                    $datatable .= '</tr>';
                }
                $datatable .= '<tr>';
            }
            $datatable .= '<td><span class="LC_nobreak"><label>'.
                          '<input type="checkbox" name="passwords_chars" value="'.$possrules[$i].'"'.$checked.' />'.
                          $rulenames{$possrules[$i]}.'</label></span></td>';
        }
        my $rem = @possrules%($numinrow);
        my $colsleft = $numinrow - $rem;
        if ($colsleft > 1 ) {
            $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                          '&nbsp;</td>';
        } elsif ($colsleft == 1) {
            $datatable .= '<td class="LC_left_item">&nbsp;</td>';
        }
        $datatable .='</table></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'expire'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak">'.
                      '<input type="text" name="passwords_expire" value="'.$expire.'" size="4" '.
                      'onblur="javascript:warnIntPass(this);" />'.
                      '<span class="LC_fontsize_small"> '.&mt('(Leave blank for no expiration)').'</span>'.
                      '</span></td></tr>';
        $itemcount ++;
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'><td>'.$titles{'numsaved'}.'</td>'.
                      '<td class="LC_left_item"><span class="LC_nobreak">'.
                      '<input type="text" name="passwords_numsaved" value="'.$numsaved.'" size="3" '.
                      'onblur="javascript:warnIntPass(this);" />'. 
                      '<span class="LC_fontsize_small"> '.&mt('(Leave blank to not save previous passwords)').'</span>'.
                      '</span></td></tr>';
    } else {
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        my %ownerchg = (
                          by  => {},
                          for => {},
                       );
        my %ownertitles = &Apache::lonlocal::texthash (
                            by  => 'Course owner status(es) allowed',
                            for => 'Student status(es) allowed',
                          );
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{crsownerchg}) eq 'HASH') {
                if (ref($settings->{crsownerchg}{'by'}) eq 'ARRAY') {
                    map { $ownerchg{by}{$_} = 1; } (@{$settings->{crsownerchg}{'by'}});
                }
                if (ref($settings->{crsownerchg}{'for'}) eq 'ARRAY') {
                    map { $ownerchg{for}{$_} = 1; } (@{$settings->{crsownerchg}{'for'}});
                }
            }
        }
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable .= '<tr '.$css_class.'>'.
                      '<td>'.
                      &mt('Requirements').'<ul>'.
                      '<li>'.&mt("Course 'type' is not a Community or Placement Test").'</li>'.
                      '<li>'.&mt('User is Course Coordinator and also course owner').'</li>'.
                      '<li>'.&mt("Student's only active roles are student role(s) in course(s) owned by this user").'</li>'.
                      '<li>'.&mt('User, course, and student share same domain').'</li>'.
                      '</ul>'.
                      '</td>'.
                      '<td class="LC_left_item">';
        foreach my $item ('by','for') {
            $datatable .= '<fieldset style="display: inline-block;">'.
                          '<legend>'.$ownertitles{$item}.'</legend>';
            if ((ref($types) eq 'ARRAY') && (ref($usertypes) eq 'HASH')) {
                foreach my $type (@{$types}) {
                    my $checked;
                    if ($ownerchg{$item}{$type}) {
                        $checked = ' checked="checked"';
                    }
                    $datatable .= '<span class="LC_nobreak"><label>'.
                                  '<input type="checkbox" name="passwords_crsowner_'.$item.'" value="'.
                                  $type.'"'.$checked.' />'.$usertypes->{$type}.'</label>'.
                                  '</span>&nbsp;&nbsp; ';
                }
            }
            my $checked;
            if ($ownerchg{$item}{'default'}) {
                $checked = ' checked="checked"';
            }
            $datatable .= '<span class="LC_nobreak"><label><input type="checkbox" '.
                          'name="passwords_crsowner_'.$item.'" value="default"'.$checked.' />'.
                          $othertitle.'</label></span></fieldset>';
        }
        $datatable .= '</td></tr>';
    }
    return $datatable;
}

sub print_wafproxy {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $css_class;
    my $itemcount = 0;
    my $datatable;
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my (%othercontrol,%otherdoms,%aliases,%saml,%values,$setdom,$showdom);
    my %lt = &wafproxy_titles();
    foreach my $server (sort(keys(%servers))) {
        my $serverhome = &Apache::lonnet::get_server_homeID($servers{$server});
        next if ($serverhome eq '');
        my $serverdom;
        if ($serverhome ne $server) {
            $serverdom = &Apache::lonnet::host_domain($serverhome);
            if (($serverdom ne '') && (&Apache::lonnet::domain($serverdom) ne '')) {
                $othercontrol{$server} = $serverdom;
            }
        } else {
            $serverdom = &Apache::lonnet::host_domain($server);
            next if (($serverdom eq '') || (&Apache::lonnet::domain($serverdom) eq ''));
            if ($serverdom ne $dom) {
                $othercontrol{$server} = $serverdom;
            } else {
                $setdom = 1;
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{'alias'}) eq 'HASH') {
                        $aliases{$dom} = $settings->{'alias'};
                        if ($aliases{$dom} ne '') {
                            $showdom = 1;
                        }
                    }
                    if (ref($settings->{'saml'}) eq 'HASH') {
                        $saml{$dom} = $settings->{'saml'};
                    }
                }
            }
        }
    }
    if ($setdom) {
        %{$values{$dom}} = ();
        if (ref($settings) eq 'HASH') {
            foreach my $item ('remoteip','ipheader','trusted','vpnint','vpnext') {
                $values{$dom}{$item} = $settings->{$item};
            }
        }
    }
    if (keys(%othercontrol)) {
        %otherdoms = reverse(%othercontrol);
        foreach my $domain (keys(%otherdoms)) {
            %{$values{$domain}} = ();
            my %config = &Apache::lonnet::get_dom('configuration',['wafproxy'],$domain);
            if (ref($config{'wafproxy'}) eq 'HASH') {
                $aliases{$domain} = $config{'wafproxy'}{'alias'};
                if (exists($config{'wafproxy'}{'saml'})) { 
                    $saml{$domain} = $config{'wafproxy'}{'saml'};
                }
                foreach my $item ('remoteip','ipheader','trusted','vpnint','vpnext') {
                    $values{$domain}{$item} = $config{'wafproxy'}{$item};
                }
            }
        }
    }
    if ($position eq 'top') {
        my %servers = &Apache::lonnet::internet_dom_servers($dom);
        my %aliasinfo;
        foreach my $server (sort(keys(%servers))) {
            $itemcount ++;
            my $dom_in_effect;
            my $aliasrows = '<tr>'.
                            '<td class="LC_left_item" style="vertical-align: baseline;">'.
                            &mt('Hostname').':&nbsp;'.
                            '<i>'.&Apache::lonnet::hostname($server).'</i></td><td>&nbsp;</td>';
            if ($othercontrol{$server}) {
                $dom_in_effect = $othercontrol{$server};
                my ($current,$forsaml);
                if (ref($aliases{$dom_in_effect}) eq 'HASH') {
                    $current = $aliases{$dom_in_effect}{$server};
                }
                if (ref($saml{$dom_in_effect}) eq 'HASH') {
                    if ($saml{$dom_in_effect}{$server}) {
                        $forsaml = 1;
                    }
                }
                $aliasrows .= '<td class="LC_left_item" style="vertical-align: baseline;">'.
                              &mt('Alias').':&nbsp';
                if ($current) {
                    $aliasrows .= $current;
                    if ($forsaml) {
                         $aliasrows .= '&nbsp;('.&mt('also for SSO Auth').')';
                    }
                } else {
                    $aliasrows .= &mt('None');
                }
                $aliasrows .= '&nbsp;<span class="LC_small">('.
                              &mt('controlled by domain: [_1]',
                                  '<b>'.$dom_in_effect.'</b>').')</span></td>';
            } else {
                $dom_in_effect = $dom;
                my ($current,$samlon,$samloff);
                $samloff = ' checked="checked"';
                if (ref($aliases{$dom}) eq 'HASH') {
                    if ($aliases{$dom}{$server}) {
                        $current = $aliases{$dom}{$server};
                    }
                }
                if (ref($saml{$dom}) eq 'HASH') {
                    if ($saml{$dom}{$server}) {
                        $samlon = $samloff;
                        undef($samloff);
                    }
                }
                $aliasrows .= '<td class="LC_left_item" style="vertical-align: baseline;">'.
                              &mt('Alias').':&nbsp;'.
                              '<input type="text" name="wafproxy_alias_'.$server.'" '.
                              'value="'.$current.'" size="30" />'.
                              ('&nbsp;'x2).'<span class="LC_nobreak">'.
                              &mt('Alias used for SSO Auth').':&nbsp;<label>'.
                              '<input type="radio" value="0"'.$samloff.' name="wafproxy_alias_saml_'.$server.'" />'.
                              &mt('No').'</label>&nbsp;<label>'. 
                              '<input type="radio" value="1"'.$samlon.' name="wafproxy_alias_saml_'.$server.'" />'.
                              &mt('Yes').'</label></span>'.
                              '</td>'; 
            }
            $aliasrows .= '</tr>';
            $aliasinfo{$dom_in_effect} .= $aliasrows;
        }
        if ($aliasinfo{$dom}) {
            my ($onclick,$wafon,$wafoff,$showtable);
            $onclick = ' onclick="javascript:toggleWAF();"';
            $wafoff = ' checked="checked"';
            $showtable = ' style="display:none";';
            if ($showdom) {
                $wafon = $wafoff;
                $wafoff = '';
                $showtable = ' style="display:inline;"';
            }
            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
            $datatable = '<tr'.$css_class.'>'.
                         '<td class="LC_left_item">'.&mt('Domain: [_1]','<b>'.$dom.'</b>').'<br />'.
                         '<span class="LC_nobreak">'.&mt('WAF in use?').'&nbsp;<label>'.
                         '<input type="radio" name="wafproxy_'.$dom.'" value="1"'.$wafon.$onclick.' />'.
                         &mt('Yes').'</label>'.('&nbsp;'x2).'<label>'.
                         '<input type="radio" name="wafproxy_'.$dom.'" value="0"'.$wafoff.$onclick.' />'.
                         &mt('No').'</label></span></td>'.
                         '<td class="LC_left_item">'.
                         '<table id="wafproxy_table"'.$showtable.'>'.$aliasinfo{$dom}.
                         '</table></td></tr>';
            $itemcount++;
        }
        if (keys(%otherdoms)) {
            foreach my $key (sort(keys(%otherdoms))) {
                $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
                $datatable .= '<tr'.$css_class.'>'.
                              '<td class="LC_left_item">'.&mt('Domain: [_1]','<b>'.$key.'</b>').'</td>'.
                              '<td class="LC_left_item"><table>'.$aliasinfo{$key}.
                              '</table></td></tr>';
                $itemcount++;
            }
        }
    } else {
        my %ip_methods = &remoteip_methods();
        if ($setdom) {
            $itemcount ++;
            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
            my ($nowafstyle,$wafstyle,$curr_remotip,$currwafdisplay,$vpndircheck,$vpnaliascheck,
                $currwafvpn,$wafrangestyle,$alltossl,$ssltossl);
            $wafstyle = ' style="display:none;"';
            $nowafstyle = ' style="display:table-row;"';
            $currwafdisplay = ' style="display: none"';
            $wafrangestyle = ' style="display: none"';
            $curr_remotip = 'n';
            $ssltossl = ' checked="checked"';
            if ($showdom) {
                $wafstyle = ' style="display:table-row;"';
                $nowafstyle =  ' style="display:none;"';
                if (keys(%{$values{$dom}})) {
                    if ($values{$dom}{remoteip} =~ /^[nmh]$/) {
                        $curr_remotip = $values{$dom}{remoteip};
                    }
                    if ($curr_remotip eq 'h') {
                        $currwafdisplay = ' style="display:table-row"';
                        $wafrangestyle = ' style="display:inline-block;"';
                    }
                    if ($values{$dom}{'sslopt'}) {
                        $alltossl = ' checked="checked"';
                        $ssltossl = '';
                    }
                }
                if (($values{$dom}{'vpnint'} ne '') || ($values{$dom}{'vpnext'} ne '')) {
                    $vpndircheck = ' checked="checked"';
                    $currwafvpn = ' style="display:table-row;"';
                    $wafrangestyle = ' style="display:inline-block;"';
                } else {
                    $vpnaliascheck = ' checked="checked"';
                    $currwafvpn = ' style="display:none;"';
                }
            }
            $datatable .= '<tr'.$css_class.' id="nowafproxyrow_'.$dom.'"'.$wafstyle.'>'.
                          '<td class="LC_left_item">'.&mt('Domain: [_1]','<b>'.$dom.'</b>').'</td>'.
                          '<td class="LC_right_item">'.&mt('WAF not in use, nothing to set').'</td>'.
                          '</tr>'.
                          '<tr'.$css_class.' id="wafproxyrow_'.$dom.'"'.$wafstyle.'>'.
                          '<td class="LC_left_item">'.&mt('Domain: [_1]','<b>'.$dom.'</b>').'<br /><br />'.
                          '<div id="wafproxyranges_'.$dom.'">'.&mt('Format for comma separated IP ranges').':<br />'.
                          &mt('A.B.C.D/N or A.B.C.D-E.F.G.H').'<br />'.
                          &mt('Range(s) stored in CIDR notation').'</div></td>'.
                          '<td class="LC_left_item"><table>'.
                          '<tr>'.
                          '<td valign="top">'.$lt{'remoteip'}.':&nbsp;'.
                          '<select name="wafproxy_remoteip" id="wafproxy_remoteip" onchange="javascript:updateWAF();">';
            foreach my $option ('m','h','n') {
                my $sel;
                if ($option eq $curr_remotip) {
                   $sel = ' selected="selected"';
                }
                $datatable .= '<option value="'.$option.'"'.$sel.'>'.
                              $ip_methods{$option}.'</option>';
            }
            $datatable .= '</select></td></tr>'."\n".
                          '<tr id="wafproxy_header"'.$currwafdisplay.'><td>'.
                          $lt{'ipheader'}.':&nbsp;'.
                          '<input type="text" value="'.$values{$dom}{'ipheader'}.'" '.
                          'name="wafproxy_ipheader" />'.
                          '</td></tr>'."\n".
                          '<tr id="wafproxy_trust"'.$currwafdisplay.'><td>'.
                          $lt{'trusted'}.':<br />'.
                          '<textarea name="wafproxy_trusted" rows="3" cols="80">'.
                          $values{$dom}{'trusted'}.'</textarea>'.
                          '</td></tr>'."\n".
                          '<tr><td><hr /></td></tr>'."\n".
                          '<tr>'.
                          '<td valign="top">'.$lt{'vpnaccess'}.':<br /><span class="LC_nobreak">'.
                          '<label><input type="radio" name="wafproxy_vpnaccess"'.$vpndircheck.' value="1" onclick="javascript:checkWAF();" />'.
                          $lt{'vpndirect'}.'</label>'.('&nbsp;'x2).
                          '<label><input type="radio" name="wafproxy_vpnaccess"'.$vpnaliascheck.' value="0" onclick="javascript:checkWAF();" />'.
                          $lt{'vpnaliased'}.'</label></span></td></tr>';
            foreach my $item ('vpnint','vpnext') {
                $datatable .= '<tr id="wafproxy_show_'.$item.'"'.$currwafvpn.'>'.
                              '<td valign="top">'.$lt{$item}.':<br />'.
                              '<textarea name="wafproxy_'.$item.'" rows="3" cols="80">'.
                              $values{$dom}{$item}.'</textarea>'.
                              '</td></tr>'."\n";
            }
            $datatable .= '<tr><td><hr /></td></tr>'."\n".
                          '<tr>'.
                          '<td valign="top">'.$lt{'sslopt'}.':<br /><span class="LC_nobreak">'.
                          '<label><input type="radio" name="wafproxy_sslopt"'.$alltossl.' value="1" />'.
                          $lt{'alltossl'}.'</label>'.('&nbsp;'x2).
                          '<label><input type="radio" name="wafproxy_sslopt"'.$ssltossl.' value="0" />'.
                          $lt{'ssltossl'}.'</label></span></td></tr>'."\n".
                          '</table></td></tr>';
        }
        if (keys(%otherdoms)) {
            foreach my $domain (sort(keys(%otherdoms))) {
                $itemcount ++;
                $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
                $datatable .= '<tr'.$css_class.'>'.
                              '<td class="LC_left_item">'.&mt('Domain: [_1]','<b>'.$domain.'</b>').'</td>'.
                              '<td class="LC_left_item"><table>';
                foreach my $item ('remoteip','ipheader','trusted','vpnint','vpnext','sslopt') {
                    my $showval = &mt('None');
                    if ($item eq 'ssl') {
                        $showval = $lt{'ssltossl'};
                    }
                    if ($values{$domain}{$item}) {
                        $showval = $values{$domain}{$item};
                        if ($item eq 'ssl') {
                            $showval = $lt{'alltossl'};
                        } elsif ($item eq 'remoteip') {
                            $showval = $ip_methods{$values{$domain}{$item}};
                        }
                    }
                    $datatable .= '<tr>'.
                                  '<td>'.$lt{$item}.':&nbsp;'.$showval.'</td></tr>';
                }
                $datatable .= '</table></td></tr>';
            }
        }
    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub wafproxy_titles {
    return &Apache::lonlocal::texthash(
               remoteip   => "Method for determining user's IP",
               ipheader   => 'Request header containing remote IP',
               trusted    => 'Trusted IP range(s)',
               vpnaccess  => 'Access from institutional VPN',
               vpndirect  => 'via regular hostname (no WAF)',
               vpnaliased => 'via aliased hostname (WAF)',
               vpnint     => 'Internal IP Range(s) for VPN sessions',
               vpnext     => 'IP Range(s) for backend WAF connections',
               sslopt     => 'Forwarding http/https',
               alltossl   => 'WAF forwards both http and https requests to https',
               ssltossl   => 'WAF forwards http requests to http and https to https',
           );
}

sub remoteip_methods {
    return &Apache::lonlocal::texthash(
              m => 'Use Apache mod_remoteip',
              h => 'Use headers parsed by LON-CAPA',
              n => 'Not in use',
           );
}

sub print_usersessions {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my ($css_class,$datatable,$itemcount,%checked,%choices);
    my (%by_ip,%by_location,@intdoms,@instdoms);
    &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);

    my @alldoms = &Apache::lonnet::all_domains();
    my %serverhomes = %Apache::lonnet::serverhomeIDs;
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my %altids = &id_for_thisdom(%servers);
    if ($position eq 'top') {
        if (keys(%serverhomes) > 1) {
            my %spareid = &current_offloads_to($dom,$settings,\%servers);
            my ($curroffloadnow,$curroffloadoth);
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{'offloadnow'}) eq 'HASH') {
                    $curroffloadnow = $settings->{'offloadnow'};
                }
                if (ref($settings->{'offloadoth'}) eq 'HASH') {
                    $curroffloadoth = $settings->{'offloadoth'};
                }
            }
            my $other_insts = scalar(keys(%by_location));
            $datatable .= &spares_row($dom,\%servers,\%spareid,\%serverhomes,\%altids,
                                      $other_insts,$curroffloadnow,$curroffloadoth,$rowtotal);
        } else {
            $datatable .= '<tr'.$css_class.'><td colspan="2">'.
                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one server.').
                          '</td></tr>';
        }
    } else {
        my %titles = &usersession_titles();
        my ($prefix,@types);
        if ($position eq 'bottom') {
            $prefix = 'remote';
            @types = ('version','excludedomain','includedomain');
        } else {
            $prefix = 'hosted';
            @types = ('excludedomain','includedomain');
        }
        ($datatable,$itemcount) = &rules_by_location($settings,$prefix,\%by_location,\%by_ip,\@types,\%titles);
    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub rules_by_location {
    my ($settings,$prefix,$by_location,$by_ip,$types,$titles) = @_; 
    my ($datatable,$itemcount,$css_class);
    if (keys(%{$by_location}) == 0) {
        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
        $datatable = '<tr'.$css_class.'><td colspan="2">'.
                     &mt('Nothing to set here, as the cluster to which this domain belongs only contains one institution.').
                     '</td></tr>';
        $itemcount = 1;
    } else {
        $itemcount = 0;
        my $numinrow = 5;
        my (%current,%checkedon,%checkedoff);
        my @locations = sort(keys(%{$by_location}));
        foreach my $type (@{$types}) {
            $checkedon{$type} = '';
            $checkedoff{$type} = ' checked="checked"';
        }
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{$prefix}) eq 'HASH') {
                foreach my $key (keys(%{$settings->{$prefix}})) {
                    $current{$key} = $settings->{$prefix}{$key};
                    if ($key eq 'version') {
                        if ($current{$key} ne '') {
                            $checkedon{$key} = ' checked="checked"';
                            $checkedoff{$key} = '';
                        }
                    } elsif (ref($current{$key}) eq 'ARRAY') {
                        $checkedon{$key} = ' checked="checked"';
                        $checkedoff{$key} = '';
                    }
                }
            }
        }
        foreach my $type (@{$types}) {
            next if ($type ne 'version' && !@locations);
            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
            $datatable .= '<tr'.$css_class.'>
                           <td><span class="LC_nobreak">'.$titles->{$type}.'</span><br />
                           <span class="LC_nobreak">&nbsp;
                           <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedoff{$type}.' value="0" />'.&mt('Not in use').'</label>&nbsp;
                           <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedon{$type}.' value="1" />'.&mt('In use').'</label></span></td><td>';
            if ($type eq 'version') {
                my @lcversions = &Apache::lonnet::all_loncaparevs();
                my $selector = '<select name="'.$prefix.'_version">';
                foreach my $version (@lcversions) {
                    my $selected = '';
                    if ($current{'version'} eq $version) {
                        $selected = ' selected="selected"';
                    }
                    $selector .= ' <option value="'.$version.'"'.
                                 $selected.'>'.$version.'</option>';
                }
                $selector .= '</select> ';
                $datatable .= &mt('remote server must be version: [_1] or later',$selector);
            } else {
                $datatable.= '<div><input type="button" value="'.&mt('check all').'" '.
                             'onclick="javascript:checkAll(document.display.'.$prefix.'_'.$type.')"'.
                             ' />'.('&nbsp;'x2).
                             '<input type="button" value="'.&mt('uncheck all').'" '.
                             'onclick="javascript:uncheckAll(document.display.'.$prefix.'_'.$type.')" />'.
                             "\n".
                             '</div><div><table>';
                my $rem;
                for (my $i=0; $i<@locations; $i++) {
                    my ($showloc,$value,$checkedtype);
                    if (ref($by_location->{$locations[$i]}) eq 'ARRAY') {
                        my $ip = $by_location->{$locations[$i]}->[0];
                        if (ref($by_ip->{$ip}) eq 'ARRAY') {
                            $value = join(':',@{$by_ip->{$ip}});
                            $showloc = join(', ',@{$by_ip->{$ip}});
                            if (ref($current{$type}) eq 'ARRAY') {
                                foreach my $loc (@{$by_ip->{$ip}}) {
                                    if (grep(/^\Q$loc\E$/,@{$current{$type}})) {
                                        $checkedtype = ' checked="checked"';
                                        last;
                                    }
                                }
                            }
                        }
                    }
                    $rem = $i%($numinrow);
                    if ($rem == 0) {
                        if ($i > 0) {
                            $datatable .= '</tr>';
                        }
                        $datatable .= '<tr>';
                    }
                    $datatable .= '<td class="LC_left_item">'.
                                  '<span class="LC_nobreak"><label>'.
                                  '<input type="checkbox" name="'.$prefix.'_'.$type.
                                  '" value="'.$value.'"'.$checkedtype.' />'.$showloc.
                                  '</label></span></td>';
                }
                $rem = @locations%($numinrow);
                my $colsleft = $numinrow - $rem;
                if ($colsleft > 1 ) {
                    $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                                  '&nbsp;</td>';
                } elsif ($colsleft == 1) {
                    $datatable .= '<td class="LC_left_item">&nbsp;</td>';
                }
                $datatable .= '</tr></table>';
            }
            $datatable .= '</td></tr>';
            $itemcount ++;
        }
    }
    return ($datatable,$itemcount);
}

sub print_ssl {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my ($css_class,$datatable);
    my $itemcount = 1;
    if ($position eq 'top') {
        my $primary_id = &Apache::lonnet::domain($dom,'primary');
        my $intdom = &Apache::lonnet::internet_dom($primary_id);
        my $same_institution;
        if ($intdom ne '') {
            my $internet_names = &Apache::lonnet::get_internet_names($Apache::lonnet::perlvar{'lonHostID'});
            if (ref($internet_names) eq 'ARRAY') {
                if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
                    $same_institution = 1;
                }
            }
        }
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $datatable = '<tr'.$css_class.'><td colspan="2">';
        if ($same_institution) {
            my %domservers = &Apache::lonnet::get_servers($dom);
            $datatable .= &LONCAPA::SSL::print_certstatus(\%domservers,'web','domprefs');
        } else {
            $datatable .= &mt("You need to be logged into one of your own domain's servers to display information about the status of LON-CAPA SSL certificates.");
        }
        $datatable .= '</td></tr>';
        $itemcount ++;
    } else {
        my %titles = &ssl_titles();
        my (%by_ip,%by_location,@intdoms,@instdoms);
        &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);
        my @alldoms = &Apache::lonnet::all_domains();
        my %serverhomes = %Apache::lonnet::serverhomeIDs;
        my @domservers = &Apache::lonnet::get_servers($dom);
        my %servers = &Apache::lonnet::internet_dom_servers($dom);
        my %altids = &id_for_thisdom(%servers);
        if (($position eq 'connto') || ($position eq 'connfrom')) {
            my $legacy;
            unless (ref($settings) eq 'HASH') {
                my $name;
                if ($position eq 'connto') {
                    $name = 'loncAllowInsecure';
                } else {
                    $name = 'londAllowInsecure';
                }
                my $primarylibserv = &Apache::lonnet::domain($dom,'primary');
                my @ids=&Apache::lonnet::current_machine_ids();
                if (($primarylibserv ne '') && (!grep(/^\Q$primarylibserv\E$/,@ids))) {
                    my %what = (
                                   $name => 1,
                               );
                    my ($result,$returnhash) =
                        &Apache::lonnet::get_remote_globals($primarylibserv,\%what);
                    if ($result eq 'ok') {
                        if (ref($returnhash) eq 'HASH') {
                            $legacy = $returnhash->{$name};
                        }
                    }
                } else {
                    $legacy = $Apache::lonnet::perlvar{$name};
                }
            }
            foreach my $type ('dom','intdom','other') {
                my %checked;
                $css_class = $itemcount%2?' class="LC_odd_row"':'';
                $datatable .= '<tr'.$css_class.'><td>'.$titles{$type}.'</td>'.
                              '<td class="LC_right_item">';
                my $skip; 
                if ($type eq 'dom') {
                    unless (keys(%servers) > 1) {
                        $datatable .= &mt('Nothing to set here, as there are no other servers/VMs');    
                        $skip = 1;
                    }
                }
                if ($type eq 'intdom') {
                    unless (@instdoms > 1) {
                        $datatable .= &mt('Nothing to set here, as there are no other domains for this institution');
                        $skip = 1;
                    } 
                } elsif ($type eq 'other') {
                    if (keys(%by_location) == 0) {
                        $datatable .= &mt('Nothing to set here, as there are no other institutions');
                        $skip = 1;
                    }
                }
                unless ($skip) {
                    $checked{'yes'} = ' checked="checked"'; 
                    if (ref($settings) eq 'HASH') {
                        if (ref($settings->{$position}) eq 'HASH') {
                            if ($settings->{$position}->{$type} =~ /^(no|req)$/) {
                                $checked{$1} = $checked{'yes'};
                                delete($checked{'yes'}); 
                            }
                        }
                    } else {
                        if ($legacy == 0) {
                            $checked{'req'} = $checked{'yes'};
                            delete($checked{'yes'});    
                        }
                    }
                    foreach my $option ('no','yes','req') {
                        $datatable .= '<span class="LC_nobreak"><label>'.
                                      '<input type="radio" name="'.$position.'_'.$type.'" '.
                                      'value="'.$option.'"'.$checked{$option}.' />'.$titles{$option}.
                                      '</label></span>'.('&nbsp;'x2);
                    }
                }
                $datatable .= '</td></tr>';
                $itemcount ++; 
            }
        } else {
            my $prefix = 'replication';
            my @types = ('certreq','nocertreq');
            if (keys(%by_location) == 0) {
                $datatable .= '<tr'.$css_class.'><td>'.
                              &mt('Nothing to set here, as there are no other institutions').
                              '</td></tr>';
                $itemcount ++;
            } else {
                ($datatable,$itemcount) = 
                    &rules_by_location($settings,$prefix,\%by_location,\%by_ip,\@types,\%titles);
            }
        }
    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub ssl_titles {
    return &Apache::lonlocal::texthash (
               dom           => 'LON-CAPA servers/VMs from same domain',
               intdom        => 'LON-CAPA servers/VMs from same "internet" domain',
               other         => 'External LON-CAPA servers/VMs',
               connto        => 'Connections to other servers',
               connfrom      => 'Connections from other servers',
               replication   => 'Replicating content to other institutions',
               certreq       => 'Client certificate required, but specific domains exempt',
               nocertreq     => 'No client certificate required, except for specific domains',
               no            => 'SSL not used',
               yes           => 'SSL Optional (used if available)',
               req           => 'SSL Required',
    );
}

sub print_trust {
    my ($prefix,$dom,$settings,$rowtotal) = @_;
    my ($css_class,$datatable,%checked,%choices);
    my (%by_ip,%by_location,@intdoms,@instdoms);
    &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);
    my $itemcount = 1;
    my %titles = &trust_titles();
    my @types = ('exc','inc');
    if ($prefix eq 'top') {
        $prefix = 'content';
    } elsif ($prefix eq 'bottom') {
        $prefix = 'msg';
    }
    ($datatable,$itemcount) = &rules_by_location($settings,$prefix,\%by_location,\%by_ip,\@types,\%titles);
    $$rowtotal += $itemcount;
    return $datatable;
}

sub trust_titles {
    return &Apache::lonlocal::texthash(
               content  => "Access to this domain's content by others",
               shared   => "Access to other domain's content by this domain",
               enroll   => "Enrollment in this domain's courses by others", 
               othcoau  => "Co-author roles in this domain for others",
               coaurem  => "Co-author roles for this domain's users elsewhere", 
               domroles => "Domain roles in this domain assignable to others",
               catalog  => "Course Catalog for this domain displayed elsewhere",
               reqcrs   => "Requests for creation of courses in this domain by others",
               msg      => "Users in other domains can send messages to this domain",
               exc      => "Allow all, but exclude specific domains",
               inc      => "Deny all, but include specific domains",
           );
} 

sub build_location_hashes {
    my ($intdoms,$by_ip,$by_location,$instdoms) = @_;
    return unless((ref($intdoms) eq 'ARRAY') && (ref($by_ip) eq 'HASH') &&
                  (ref($by_location) eq 'HASH') && (ref($instdoms) eq 'ARRAY'));
    my %iphost = &Apache::lonnet::get_iphost();
    my $primary_id = &Apache::lonnet::domain($env{'request.role.domain'},'primary');
    my $primary_ip = &Apache::lonnet::get_host_ip($primary_id);
    if (ref($iphost{$primary_ip}) eq 'ARRAY') {
        foreach my $id (@{$iphost{$primary_ip}}) {
            my $intdom = &Apache::lonnet::internet_dom($id);
            unless(grep(/^\Q$intdom\E$/,@{$intdoms})) {
                push(@{$intdoms},$intdom);
            }
        }
    }
    foreach my $ip (keys(%iphost)) {
        if (ref($iphost{$ip}) eq 'ARRAY') {
            foreach my $id (@{$iphost{$ip}}) {
                my $location = &Apache::lonnet::internet_dom($id);
                if ($location) {
                    if (grep(/^\Q$location\E$/,@{$intdoms})) {
                        my $dom = &Apache::lonnet::host_domain($id);
                        unless (grep(/^\Q$dom\E/,@{$instdoms})) {
                            push(@{$instdoms},$dom);
                        }
                        next;
                    }
                    if (ref($by_ip->{$ip}) eq 'ARRAY') {
                        unless(grep(/^\Q$location\E$/,@{$by_ip->{$ip}})) {
                            push(@{$by_ip->{$ip}},$location);
                        }
                    } else {
                        $by_ip->{$ip} = [$location];
                    }
                }
            }
        }
    }
    foreach my $ip (sort(keys(%{$by_ip}))) {
        if (ref($by_ip->{$ip}) eq 'ARRAY') {
            @{$by_ip->{$ip}} = sort(@{$by_ip->{$ip}});
            my $first = $by_ip->{$ip}->[0];
            if (ref($by_location->{$first}) eq 'ARRAY') {
                unless (grep(/^\Q$ip\E$/,@{$by_location->{$first}})) {
                    push(@{$by_location->{$first}},$ip);
                }
            } else {
                $by_location->{$first} = [$ip];
            }
        }
    }
    return;
}

sub current_offloads_to {
    my ($dom,$settings,$servers) = @_;
    my (%spareid,%otherdomconfigs);
    if (ref($servers) eq 'HASH') {
        foreach my $lonhost (sort(keys(%{$servers}))) {
            my $gotspares;
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{'spares'}) eq 'HASH') {
                    if (ref($settings->{'spares'}{$lonhost}) eq 'HASH') {
                        $spareid{$lonhost}{'primary'} = $settings->{'spares'}{$lonhost}{'primary'};
                        $spareid{$lonhost}{'default'} = $settings->{'spares'}{$lonhost}{'default'};
                        $gotspares = 1;
                    }
                }
            }
            unless ($gotspares) {
                my $gotspares;
                my $serverhomeID =
                    &Apache::lonnet::get_server_homeID($servers->{$lonhost});
                my $serverhomedom =
                    &Apache::lonnet::host_domain($serverhomeID);
                if ($serverhomedom ne $dom) {
                    if (ref($otherdomconfigs{$serverhomedom} eq 'HASH')) {
                        if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}) eq 'HASH') {
                            if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}) eq 'HASH') {
                                $spareid{$lonhost}{'primary'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'primary'};
                                $spareid{$lonhost}{'default'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'default'};
                                $gotspares = 1;
                            }
                        }
                    } else {
                        $otherdomconfigs{$serverhomedom} =
                            &Apache::lonnet::get_dom('configuration',['usersessions'],$serverhomedom);
                        if (ref($otherdomconfigs{$serverhomedom}) eq 'HASH') {
                            if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}) eq 'HASH') {
                                if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}) eq 'HASH') {
                                    if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{$lonhost}) eq 'HASH') {
                                        $spareid{$lonhost}{'primary'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'primary'};
                                        $spareid{$lonhost}{'default'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'default'};
                                        $gotspares = 1;
                                    }
                                }
                            }
                        }
                    }
                }
            }
            unless ($gotspares) {
                if ($lonhost eq $Apache::lonnet::perlvar{'lonHostID'}) {
                    $spareid{$lonhost}{'primary'} = $Apache::lonnet::spareid{'primary'};
                    $spareid{$lonhost}{'default'} = $Apache::lonnet::spareid{'default'};
               } else {
                    my $server_hostname = &Apache::lonnet::hostname($lonhost);
                    my $server_homeID = &Apache::lonnet::get_server_homeID($server_hostname);
                    if ($server_homeID eq $Apache::lonnet::perlvar{'lonHostID'}) {
                        $spareid{$lonhost}{'primary'} = $Apache::lonnet::spareid{'primary'};
                        $spareid{$lonhost}{'default'} = $Apache::lonnet::spareid{'default'};
                    } else {
                        my %what = (
                             spareid => 1,
                        );
                        my ($result,$returnhash) = 
                            &Apache::lonnet::get_remote_globals($lonhost,\%what);
                        if ($result eq 'ok') { 
                            if (ref($returnhash) eq 'HASH') {
                                if (ref($returnhash->{'spareid'}) eq 'HASH') {
                                    $spareid{$lonhost}{'primary'} = $returnhash->{'spareid'}->{'primary'};
                                    $spareid{$lonhost}{'default'} = $returnhash->{'spareid'}->{'default'};
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    return %spareid;
}

sub spares_row {
    my ($dom,$servers,$spareid,$serverhomes,$altids,$other_insts,
        $curroffloadnow,$curroffloadoth,$rowtotal) = @_;
    my $css_class;
    my $numinrow = 4;
    my $itemcount = 1;
    my $datatable;
    my %typetitles = &sparestype_titles();
    if ((ref($servers) eq 'HASH') && (ref($spareid) eq 'HASH') && (ref($altids) eq 'HASH')) {
        foreach my $server (sort(keys(%{$servers}))) {
            my $serverhome = &Apache::lonnet::get_server_homeID($servers->{$server});
            my ($othercontrol,$serverdom);
            if ($serverhome ne $server) {
                $serverdom = &Apache::lonnet::host_domain($serverhome);
                $othercontrol = &mt('Session offloading controlled by domain: [_1]','<b>'.$serverdom.'</b>');
            } else {
                $serverdom = &Apache::lonnet::host_domain($server);
                if ($serverdom ne $dom) {
                    $othercontrol = &mt('Session offloading controlled by domain: [_1]','<b>'.$serverdom.'</b>');
                }
            }
            next unless (ref($spareid->{$server}) eq 'HASH');
            my ($checkednow,$checkedoth);
            if (ref($curroffloadnow) eq 'HASH') {
                if ($curroffloadnow->{$server}) {
                    $checkednow = ' checked="checked"';
                }
            }
            if (ref($curroffloadoth) eq 'HASH') {
                if ($curroffloadoth->{$server}) {
                    $checkedoth = ' checked="checked"';
                }
            }
            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
            $datatable .= '<tr'.$css_class.'>
                           <td rowspan="2">
                            <span class="LC_nobreak">'.
                          &mt('[_1] when busy, offloads to:'
                              ,'<b>'.$server.'</b>').'</span><br />'.
                          '<span class="LC_nobreak">'."\n".
                          '<label><input type="checkbox" name="offloadnow" value="'.$server.'"'.$checkednow.' />'.
                          '&nbsp;'.&mt('Switch any active user on next access').'</label></span>'.
                          "\n";
            if ($other_insts) {
                $datatable .= '<br />'.
                              '<span class="LC_nobreak">'."\n".
                          '<label><input type="checkbox" name="offloadoth" value="'.$server.'"'.$checkedoth.' />'.
                          '&nbsp;'.&mt('Switch other institutions on next access').'</label></span>'.
                          "\n";
            }
            my (%current,%canselect);
            my @choices = 
                &possible_newspares($server,$spareid->{$server},$serverhomes,$altids);
            foreach my $type ('primary','default') {
                if (ref($spareid->{$server}) eq 'HASH') {
                    if (ref($spareid->{$server}{$type}) eq 'ARRAY') {
                        my @spares = @{$spareid->{$server}{$type}};
                        if (@spares > 0) {
                            if ($othercontrol) {
                                $current{$type} = join(', ',@spares);
                            } else {
                                $current{$type} .= '<table>';
                                my $numspares = scalar(@spares);
                                for (my $i=0;  $i<@spares; $i++) {
                                    my $rem = $i%($numinrow);
                                    if ($rem == 0) {
                                        if ($i > 0) {
                                            $current{$type} .= '</tr>';
                                        }
                                        $current{$type} .= '<tr>';
                                    }
                                    $current{$type} .= '<td><label><input type="checkbox" name="spare_'.$type.'_'.$server.'" id="spare_'.$type.'_'.$server.'_'.$i.'" checked="checked" value="'.$spareid->{$server}{$type}[$i].'" onclick="updateNewSpares(this.form,'."'$server'".');" />&nbsp;'.
                                                       $spareid->{$server}{$type}[$i].
                                                       '</label></td>'."\n";
                                }
                                my $rem = @spares%($numinrow);
                                my $colsleft = $numinrow - $rem;
                                if ($colsleft > 1 ) {
                                    $current{$type} .= '<td colspan="'.$colsleft.
                                                       '" class="LC_left_item">'.
                                                       '&nbsp;</td>';
                                } elsif ($colsleft == 1) {
                                    $current{$type} .= '<td class="LC_left_item">&nbsp;</td>'."\n";
                                }
                                $current{$type} .= '</tr></table>';
                            }
                        }
                    }
                    if ($current{$type} eq '') {
                        $current{$type} = &mt('None specified');
                    }
                    if ($othercontrol) {
                        if ($type eq 'primary') {
                            $canselect{$type} = $othercontrol;
                        }
                    } else {
                        $canselect{$type} = 
                            &mt('Add new [_1]'.$type.'[_2]:','<i>','</i>').'&nbsp;'.
                            '<select name="newspare_'.$type.'_'.$server.'" '.
                            'id="newspare_'.$type.'_'.$server.'" onchange="checkNewSpares('."'$server','$type'".');">'."\n".
                            '<option value="" selected ="selected">'.&mt('Select').'</option>'."\n";
                        if (@choices > 0) {
                            foreach my $lonhost (@choices) {
                                $canselect{$type} .= '<option value="'.$lonhost.'">'.$lonhost.'</option>'."\n";
                            }
                        }
                        $canselect{$type} .= '</select>'."\n";
                    }
                } else {
                    $current{$type} = &mt('Could not be determined');
                    if ($type eq 'primary') {
                        $canselect{$type} =  $othercontrol;
                    }
                }
                if ($type eq 'default') {
                    $datatable .= '<tr'.$css_class.'>';
                }
                $datatable .= '<td><i>'.$typetitles{$type}.'</i></td>'."\n".
                              '<td>'.$current{$type}.'</td>'."\n".
                              '<td>'.$canselect{$type}.'</td></tr>'."\n";
            }
            $itemcount ++;
        }
    }
    $$rowtotal += $itemcount;
    return $datatable;
}

sub possible_newspares {
    my ($server,$currspares,$serverhomes,$altids) = @_;
    my $serverhostname = &Apache::lonnet::hostname($server);
    my %excluded;
    if ($serverhostname ne '') {
        %excluded = (
                       $serverhostname => 1,
                    );
    }
    if (ref($currspares) eq 'HASH') {
        foreach my $type (keys(%{$currspares})) {
            if (ref($currspares->{$type}) eq 'ARRAY') {
                if (@{$currspares->{$type}} > 0) {
                    foreach my $curr (@{$currspares->{$type}}) {
                        my $hostname = &Apache::lonnet::hostname($curr);
                        $excluded{$hostname} = 1;
                    }
                }
            }
        }
    }
    my @choices;
    if ((ref($serverhomes) eq 'HASH') && (ref($altids) eq 'HASH')) {
        if (keys(%{$serverhomes}) > 1) {
            foreach my $name (sort(keys(%{$serverhomes}))) {
                unless ($excluded{$name}) {
                    if (exists($altids->{$serverhomes->{$name}})) {
                        push(@choices,$altids->{$serverhomes->{$name}});
                    } else {
                        push(@choices,$serverhomes->{$name});
                    }
                }
            }
        }
    }
    return sort(@choices);
}

sub print_loadbalancing {
    my ($dom,$settings,$rowtotal) = @_;
    my $primary_id = &Apache::lonnet::domain($dom,'primary');
    my $intdom = &Apache::lonnet::internet_dom($primary_id);
    my $numinrow = 1;
    my $datatable;
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my (%currbalancer,%currtargets,%currrules,%existing,%currcookies);
    if (ref($settings) eq 'HASH') {
        %existing = %{$settings};
    }
    if ((keys(%servers) > 1) || (keys(%existing) > 0)) {
        &get_loadbalancers_config(\%servers,\%existing,\%currbalancer,
                                  \%currtargets,\%currrules,\%currcookies);
    } else {
        return;
    }
    my ($othertitle,$usertypes,$types) =
        &Apache::loncommon::sorted_inst_types($dom);
    my $rownum = 8;
    if (ref($types) eq 'ARRAY') {
        $rownum += scalar(@{$types});
    }
    my @css_class = ('LC_odd_row','LC_even_row');
    my $balnum = 0;
    my $islast;
    my (@toshow,$disabledtext);
    if (keys(%currbalancer) > 0) {
        @toshow = sort(keys(%currbalancer));
        if (scalar(@toshow) < scalar(keys(%servers)) + 1) {
            push(@toshow,'');
        }
    } else {
        @toshow = ('');
        $disabledtext = &mt('No existing load balancer');
    }
    foreach my $lonhost (@toshow) {
        if ($balnum == scalar(@toshow)-1) {
            $islast = 1;
        } else {
            $islast = 0;
        }
        my $cssidx = $balnum%2;
        my $targets_div_style = 'display: none';
        my $disabled_div_style = 'display: block';
        my $homedom_div_style = 'display: none';
        $datatable .= '<tr class="'.$css_class[$cssidx].'">'.
                      '<td rowspan="'.$rownum.'" style="vertical-align: top">'.
                      '<p>';
        if ($lonhost eq '') {
            $datatable .= '<span class="LC_nobreak">';
            if (keys(%currbalancer) > 0) {
                $datatable .= &mt('Add balancer:');
            } else {
                $datatable .= &mt('Enable balancer:');
            }
            $datatable .= '&nbsp;'.
                          '<select name="loadbalancing_lonhost_'.$balnum.'"'.
                          ' id="loadbalancing_lonhost_'.$balnum.'"'.
                          ' onchange="toggleTargets('."'$balnum'".');">'."\n".
                          '<option value="" selected="selected">'.&mt('None').
                          '</option>'."\n";
            foreach my $server (sort(keys(%servers))) {
                next if ($currbalancer{$server});
                $datatable .= '<option value="'.$server.'">'.$server.'</option>'."\n";
            }
            $datatable .=
                '</select>'."\n".
                '<input type="hidden" name="loadbalancing_prevlonhost_'.$balnum.'" id="loadbalancing_prevlonhost_'.$balnum.'" value="" />&nbsp;</span>'."\n";
        } else {
            $datatable .= '<i>'.$lonhost.'</i><br /><span class="LC_nobreak">'.
                          '<label><input type="checkbox" name="loadbalancing_delete" value="'.$balnum.'" id="loadbalancing_delete_'.$balnum.'" onclick="javascript:balancerDeleteChange('."'$balnum'".');" />&nbsp;'.
                           &mt('Stop balancing').'</label>'.
                           '<input type="hidden" name="loadbalancing_lonhost_'.$balnum.'" value="'.$lonhost.'" id="loadbalancing_lonhost_'.$balnum.'" /></span>';
            $targets_div_style = 'display: block';
            $disabled_div_style = 'display: none';
            if ($dom eq &Apache::lonnet::host_domain($lonhost)) {
                $homedom_div_style = 'display: block';
            }
        }
        $datatable .= '</p></td><td rowspan="'.$rownum.'" style="vertical-align: top">'.
                  '<div id="loadbalancing_disabled_'.$balnum.'" style="'.
                  $disabled_div_style.'">'.$disabledtext.'</div>'."\n".
                  '<div id="loadbalancing_targets_'.$balnum.'" style="'.$targets_div_style.'">'.&mt('Offloads to:').'<br />';
        my ($numspares,@spares) = &count_servers($lonhost,%servers);
        my @sparestypes = ('primary','default');
        my %typetitles = &sparestype_titles();
        my %hostherechecked = (
                                  no => ' checked="checked"',
                              );
        my %balcookiechecked = (
                                  no => ' checked="checked"', 
                               );
        foreach my $sparetype (@sparestypes) {
            my $targettable;
            for (my $i=0; $i<$numspares; $i++) {
                my $checked;
                if (ref($currtargets{$lonhost}) eq 'HASH') {
                    if (ref($currtargets{$lonhost}{$sparetype}) eq 'ARRAY') {
                        if (grep(/^\Q$spares[$i]\E$/,@{$currtargets{$lonhost}{$sparetype}})) {
                            $checked = ' checked="checked"';
                        }
                    }
                }
                my ($chkboxval,$disabled);
                if (($lonhost ne '') && (exists($servers{$lonhost}))) {
                    $chkboxval = $spares[$i];
                }
                if (exists($currbalancer{$spares[$i]})) {
                    $disabled = ' disabled="disabled"';
                }
                $targettable .=
                    '<td><span class="LC_nobreak"><label>'.
                    '<input type="checkbox" name="loadbalancing_target_'.$balnum.'_'.$sparetype.'"'.
                    $checked.$disabled.' value="'.$chkboxval.'" id="loadbalancing_target_'.$balnum.'_'.$sparetype.'_'.$i.'" onclick="checkOffloads('."this,'$balnum','$sparetype'".');" /><span id="loadbalancing_targettxt_'.$balnum.'_'.$sparetype.'_'.$i.'">&nbsp;'.$chkboxval.
                    '</span></label></span></td>';
                my $rem = $i%($numinrow);
                if ($rem == 0) {
                    if (($i > 0) && ($i < $numspares-1)) {
                        $targettable .= '</tr>';
                    }
                    if ($i < $numspares-1) {
                        $targettable .= '<tr>';
                    }
                }
            }
            if ($targettable ne '') {
                my $rem = $numspares%($numinrow);
                my $colsleft = $numinrow - $rem;
                if ($colsleft > 1 ) {
                    $targettable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                                    '&nbsp;</td>';
                } elsif ($colsleft == 1) {
                    $targettable .= '<td class="LC_left_item">&nbsp;</td>';
                }
                $datatable .=  '<i>'.$typetitles{$sparetype}.'</i><br />'.
                               '<table><tr>'.$targettable.'</tr></table><br />';
            }
            $hostherechecked{$sparetype} = '';
            if (ref($currtargets{$lonhost}) eq 'HASH') {
                if (ref($currtargets{$lonhost}{$sparetype}) eq 'ARRAY') {
                    if (grep(/^\Q$lonhost\E$/,@{$currtargets{$lonhost}{$sparetype}})) {
                        $hostherechecked{$sparetype} = ' checked="checked"';
                        $hostherechecked{'no'} = '';
                    }
                }
            }
        }
        if ($currcookies{$lonhost}) {
            %balcookiechecked = (
                                    yes => ' checked="checked"',
                                );
        }
        $datatable .= &mt('Hosting on balancer itself').'<br />'.
                      '<label><input type="radio" name="loadbalancing_target_'.$balnum.'_hosthere" value="no"'.
                      $hostherechecked{'no'}.' />'.&mt('No').'</label><br />';
        foreach my $sparetype (@sparestypes) {
            $datatable .= '<label><input type="radio" name="loadbalancing_target_'.$balnum.'_hosthere" '.
                          'value="'.$sparetype.'"'.$hostherechecked{$sparetype}.' /><i>'.$typetitles{$sparetype}.
                          '</i></label><br />';
        }
        $datatable .= &mt('Use balancer cookie').'<br />'.
                      '<label><input type="radio" name="loadbalancing_cookie_'.$balnum.'" value="1"'.
                      $balcookiechecked{'yes'}.' />'.&mt('Yes').'</label><br />'.
                      '<label><input type="radio" name="loadbalancing_cookie_'.$balnum.'" value="0"'.
                      $balcookiechecked{'no'}.' />'.&mt('No').'</label><br />'.
                      '</div></td></tr>'.
                      &loadbalancing_rules($dom,$intdom,$currrules{$lonhost},
                                           $othertitle,$usertypes,$types,\%servers,
                                           \%currbalancer,$lonhost,
                                           $targets_div_style,$homedom_div_style,
                                           $css_class[$cssidx],$balnum,$islast);
        $$rowtotal += $rownum;
        $balnum ++;
    }
    $datatable .= '<input type="hidden" name="loadbalancing_total" id="loadbalancing_total" value="'.$balnum.'" />';
    return $datatable;
}

sub get_loadbalancers_config {
    my ($servers,$existing,$currbalancer,$currtargets,$currrules,$currcookies) = @_;
    return unless ((ref($servers) eq 'HASH') &&
                   (ref($existing) eq 'HASH') && (ref($currbalancer) eq 'HASH') &&
                   (ref($currtargets) eq 'HASH') && (ref($currrules) eq 'HASH') &&
                   (ref($currcookies) eq 'HASH'));
    if (keys(%{$existing}) > 0) {
        my $oldlonhost;
        foreach my $key (sort(keys(%{$existing}))) {
            if ($key eq 'lonhost') {
                $oldlonhost = $existing->{'lonhost'};
                $currbalancer->{$oldlonhost} = 1;
            } elsif ($key eq 'targets') {
                if ($oldlonhost) {
                    $currtargets->{$oldlonhost} = $existing->{'targets'};
                }
            } elsif ($key eq 'rules') {
                if ($oldlonhost) {
                    $currrules->{$oldlonhost} = $existing->{'rules'};
                }
            } elsif (ref($existing->{$key}) eq 'HASH') {
                $currbalancer->{$key} = 1;
                $currtargets->{$key} = $existing->{$key}{'targets'};
                $currrules->{$key} = $existing->{$key}{'rules'};
                if ($existing->{$key}{'cookie'}) {
                    $currcookies->{$key} = 1;
                }
            }
        }
    } else {
        my ($balancerref,$targetsref) =
                &Apache::lonnet::get_lonbalancer_config($servers);
        if ((ref($balancerref) eq 'HASH') && (ref($targetsref) eq 'HASH')) {
            foreach my $server (sort(keys(%{$balancerref}))) {
                $currbalancer->{$server} = 1;
                $currtargets->{$server} = $targetsref->{$server};
            }
        }
    }
    return;
}

sub loadbalancing_rules {
    my ($dom,$intdom,$currrules,$othertitle,$usertypes,$types,$servers,
        $currbalancer,$lonhost,$targets_div_style,$homedom_div_style,
        $css_class,$balnum,$islast) = @_;
    my $output;
    my $num = 0;
    my ($alltypes,$othertypes,$titles) =
        &loadbalancing_titles($dom,$intdom,$usertypes,$types);
    if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH'))  {
        foreach my $type (@{$alltypes}) {
            $num ++;
            my $current;
            if (ref($currrules) eq 'HASH') {
                $current = $currrules->{$type};
            }
            if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) {
                if ($dom ne &Apache::lonnet::host_domain($lonhost)) {
                    $current = '';
                }
            }
            $output .= &loadbalance_rule_row($type,$titles->{$type},$current,
                                             $servers,$currbalancer,$lonhost,$dom,
                                             $targets_div_style,$homedom_div_style,
                                             $css_class,$balnum,$num,$islast);
        }
    }
    return $output;
}

sub loadbalancing_titles {
    my ($dom,$intdom,$usertypes,$types) = @_;
    my %othertypes = (
           '_LC_adv'         => &mt('Advanced users from [_1]',$dom),
           '_LC_author'      => &mt('Users from [_1] with author role',$dom),
           '_LC_internetdom' => &mt('Users not from [_1], but from [_2]',$dom,$intdom),
           '_LC_external'    => &mt('Users not from [_1]',$intdom),
           '_LC_ipchangesso' => &mt('SSO users from [_1], with IP mismatch',$dom),
           '_LC_ipchange'    => &mt('Non-SSO users with IP mismatch'),
                     );
    my @alltypes = ('_LC_adv','_LC_author','_LC_internetdom','_LC_external','_LC_ipchangesso','_LC_ipchange');
    my @available;
    if (ref($types) eq 'ARRAY') {
        @available = @{$types};
    }
    unless (grep(/^default$/,@available)) {
        push(@available,'default');
    }
    unshift(@alltypes,@available);
    my %titles;
    foreach my $type (@alltypes) {
        if ($type =~ /^_LC_/) {
            $titles{$type} = $othertypes{$type};
        } elsif ($type eq 'default') {
            $titles{$type} = &mt('All users from [_1]',$dom);
            if (ref($types) eq 'ARRAY') {
                if (@{$types} > 0) {
                    $titles{$type} = &mt('Other users from [_1]',$dom);
                }
            }
        } elsif (ref($usertypes) eq 'HASH') {
            $titles{$type} = $usertypes->{$type};
        }
    }
    return (\@alltypes,\%othertypes,\%titles);
}

sub loadbalance_rule_row {
    my ($type,$title,$current,$servers,$currbalancer,$lonhost,$dom,
        $targets_div_style,$homedom_div_style,$css_class,$balnum,$num,$islast) = @_;
    my @rulenames;
    my %ruletitles = &offloadtype_text();
    if (($type eq '_LC_ipchangesso') || ($type eq '_LC_ipchange')) {
        @rulenames = ('balancer','offloadedto','specific');
    } else {
        @rulenames = ('default','homeserver');
        if ($type eq '_LC_external') {
            push(@rulenames,'externalbalancer');
        } else {
            push(@rulenames,'specific');
        }
        push(@rulenames,'none');
    }
    my $style = $targets_div_style;
    if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) {
        $style = $homedom_div_style;
    }
    my $space;
    if ($islast && $num == 1) {
        $space = '<div style="display:inline-block;">&nbsp;</div>';
    }
    my $output =
        '<tr class="'.$css_class.'" id="balanceruletr_'.$balnum.'_'.$num.'"><td style="vertical-align: top">'.$space.
        '<div id="balanceruletitle_'.$balnum.'_'.$type.'" style="'.$style.'">'.$title.'</div></td>'."\n".
        '<td valaign="top">'.$space.
        '<div id="balancerule_'.$balnum.'_'.$type.'" style="'.$style.'">'."\n";
    for (my $i=0; $i<@rulenames; $i++) {
        my $rule = $rulenames[$i];
        my ($checked,$extra);
        if ($rulenames[$i] eq 'default') {
            $rule = '';
        }
        if ($rulenames[$i] eq 'specific') {
            if (ref($servers) eq 'HASH') {
                my $default;
                if (($current ne '') && (exists($servers->{$current}))) {
                    $checked = ' checked="checked"';
                }
                unless ($checked) {
                    $default = ' selected="selected"';
                }
                $extra =
                    ':&nbsp;<select name="loadbalancing_singleserver_'.$balnum.'_'.$type.
                    '" id="loadbalancing_singleserver_'.$balnum.'_'.$type.
                    '" onchange="singleServerToggle('."'$balnum','$type'".')">'."\n".
                    '<option value=""'.$default.'></option>'."\n";
                foreach my $server (sort(keys(%{$servers}))) {
                    if (ref($currbalancer) eq 'HASH') {
                        next if (exists($currbalancer->{$server}));
                    }
                    my $selected;
                    if ($server eq $current) {
                        $selected = ' selected="selected"';
                    }
                    $extra .= '<option value="'.$server.'"'.$selected.'>'.$server.'</option>';
                }
                $extra .= '</select>';
            }
        } elsif ($rule eq $current) {
            $checked = ' checked="checked"';
        }
        $output .= '<span class="LC_nobreak"><label>'.
                   '<input type="radio" name="loadbalancing_rules_'.$balnum.'_'.$type.
                   '" id="loadbalancing_rules_'.$balnum.'_'.$type.'_'.$i.'" value="'.
                   $rule.'" onclick="balanceruleChange('."this.form,'$balnum','$type'".
                   ')"'.$checked.' />&nbsp;';
        if (($rulenames[$i] eq 'specific') && ($type =~ /^_LC_ipchange/)) {
            $output .= $ruletitles{'particular'};
        } else {
            $output .= $ruletitles{$rulenames[$i]};
        }
        $output .= '</label>'.$extra.'</span><br />'."\n";
    }
    $output .= '</div></td></tr>'."\n";
    return $output;
}

sub offloadtype_text {
    my %ruletitles = &Apache::lonlocal::texthash (
           'default'          => 'Offloads to default destinations',
           'homeserver'       => "Offloads to user's home server",
           'externalbalancer' => "Offloads to Load Balancer in user's domain",
           'specific'         => 'Offloads to specific server',
           'none'             => 'No offload',
           'balancer'         => 'Session hosted on Load Balancer, after re-authentication',
           'offloadedto'      => 'Session hosted on offload server, after re-authentication',
           'particular'       => 'Session hosted (after re-auth) on server:',
    );
    return %ruletitles;
}

sub sparestype_titles {
    my %typestitles = &Apache::lonlocal::texthash (
                          'primary' => 'primary',
                          'default' => 'default',
                      );
    return %typestitles;
}

sub contact_titles {
    my %titles = &Apache::lonlocal::texthash (
                   'supportemail'    => 'Support E-mail address',
                   'adminemail'      => 'Default Server Admin E-mail address',
                   'errormail'       => 'Error reports to be e-mailed to',
                   'packagesmail'    => 'Package update alerts to be e-mailed to',
                   'helpdeskmail'    => "Helpdesk requests from all users in this domain",
                   'otherdomsmail'   => 'Helpdesk requests from users in other (unconfigured) domains',
                   'lonstatusmail'   => 'E-mail from nightly status check (warnings/errors)',
                   'requestsmail'    => 'E-mail from course requests requiring approval',
                   'updatesmail'     => 'E-mail from nightly check of LON-CAPA module integrity/updates',
                   'idconflictsmail' => 'E-mail from bi-nightly check for multiple users sharing same student/employee ID',
                   'hostipmail'      => 'E-mail from nightly check of hostname/IP network changes',
                   'errorthreshold'  => 'Error count threshold for status e-mail to admin(s)',
                   'errorsysmail'    => 'Error count threshold for e-mail to developer group',
                   'errorweights'    => 'Weights used to compute error count',
                   'errorexcluded'   => 'Servers with unsent updates excluded from count',
                 );
    my %short_titles = &Apache::lonlocal::texthash (
                           adminemail   => 'Admin E-mail address',
                           supportemail => 'Support E-mail',
                       );   
    return (\%titles,\%short_titles);
}

sub helpform_fields {
    my %titles =  &Apache::lonlocal::texthash (
                       'username'   => 'Name',
                       'user'       => 'Username/domain',
                       'phone'      => 'Phone',
                       'cc'         => 'Cc e-mail',
                       'course'     => 'Course Details',
                       'section'    => 'Sections',
                       'screenshot' => 'File upload',
    );
    my @fields = ('username','phone','user','course','section','cc','screenshot');
    my %possoptions = (
                        username     => ['yes','no','req'],
                        phone        => ['yes','no','req'],
                        user         => ['yes','no'],
                        cc           => ['yes','no'],
                        course       => ['yes','no'],
                        section      => ['yes','no'],
                        screenshot   => ['yes','no'],
                      );
    my %fieldoptions = &Apache::lonlocal::texthash (
                         'yes'  => 'Optional',
                         'req'  => 'Required',
                         'no'   => "Not shown",
    );
    return (\@fields,\%titles,\%fieldoptions,\%possoptions);
}

sub tool_titles {
    my %titles = &Apache::lonlocal::texthash (
                     aboutme    => 'Personal web page',
                     blog       => 'Blog',
                     webdav     => 'WebDAV',
                     portfolio  => 'Portfolio',
                     official   => 'Official courses (with institutional codes)',
                     unofficial => 'Unofficial courses',
                     community  => 'Communities',
                     textbook   => 'Textbook courses',
                     placement  => 'Placement tests',
                 );
    return %titles;
}

sub courserequest_titles {
    my %titles = &Apache::lonlocal::texthash (
                                   official   => 'Official',
                                   unofficial => 'Unofficial',
                                   community  => 'Communities',
                                   textbook   => 'Textbook',
                                   placement  => 'Placement tests',
                                   lti        => 'LTI Provider',
                                   norequest  => 'Not allowed',
                                   approval   => 'Approval by DC',
                                   validate   => 'With validation',
                                   autolimit  => 'Numerical limit',
                                   unlimited  => '(blank for unlimited)',
                 );
    return %titles;
}

sub authorrequest_titles {
    my %titles = &Apache::lonlocal::texthash (
                                   norequest  => 'Not allowed',
                                   approval   => 'Approval by Dom. Coord.',
                                   automatic  => 'Automatic approval',
                 );
    return %titles;
}

sub courserequest_conditions {
    my %conditions = &Apache::lonlocal::texthash (
       approval    => '(Processing of request subject to approval by Domain Coordinator).',
       validate   => '(Processing of request subject to institutional validation).',
                 );
    return %conditions;
}


sub print_usercreation {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $numinrow = 4;
    my $datatable;
    if ($position eq 'top') {
        $$rowtotal ++;
        my $rowcount = 0;
        my ($rules,$ruleorder) = &Apache::lonnet::inst_userrules($dom,'username');
        if (ref($rules) eq 'HASH') {
            if (keys(%{$rules}) > 0) {
                $datatable .= &user_formats_row('username',$settings,$rules,
                                                $ruleorder,$numinrow,$rowcount);
                $$rowtotal ++;
                $rowcount ++;
            }
        }
        my ($idrules,$idruleorder) = &Apache::lonnet::inst_userrules($dom,'id');
        if (ref($idrules) eq 'HASH') {
            if (keys(%{$idrules}) > 0) {
                $datatable .= &user_formats_row('id',$settings,$idrules,
                                                $idruleorder,$numinrow,$rowcount);
                $$rowtotal ++;
                $rowcount ++;
            }
        }
        if ($rowcount == 0) {
            $datatable .= '<tr><td colspan="2">'.&mt('No format rules have been defined for usernames or IDs in this domain.').'</td></tr>';  
            $$rowtotal ++;
            $rowcount ++;
        }
    } elsif ($position eq 'middle') {
        my @creators = ('author','course','requestcrs');
        my ($rules,$ruleorder) =
            &Apache::lonnet::inst_userrules($dom,'username');
        my %lt = &usercreation_types();
        my %checked;
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'cancreate'}) eq 'HASH') {
                foreach my $item (@creators) {
                    $checked{$item} = $settings->{'cancreate'}{$item};
                }
            } elsif (ref($settings->{'cancreate'}) eq 'ARRAY') {
                foreach my $item (@creators) {
                    if (grep(/^\Q$item\E$/,@{$settings->{'cancreate'}})) {
                        $checked{$item} = 'none';
                    }
                }
            }
        }
        my $rownum = 0;
        foreach my $item (@creators) {
            $rownum ++;
            if ($checked{$item} eq '') {
                $checked{$item} = 'any';
            }
            my $css_class;
            if ($rownum%2) {
                $css_class = '';
            } else {
                $css_class = ' class="LC_odd_row" ';
            }
            $datatable .= '<tr'.$css_class.'>'.
                         '<td><span class="LC_nobreak">'.$lt{$item}.
                         '</span></td><td style="text-align: right">';
            my @options = ('any');
            if (ref($rules) eq 'HASH') {
                if (keys(%{$rules}) > 0) {
                    push(@options,('official','unofficial'));
                }
            }
            push(@options,'none');
            foreach my $option (@options) {
                my $type = 'radio';
                my $check = ' ';
                if ($checked{$item} eq $option) {
                    $check = ' checked="checked" ';
                } 
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="'.$type.'" name="can_createuser_'.
                              $item.'" value="'.$option.'"'.$check.'/>&nbsp;'.
                              $lt{$option}.'</label>&nbsp;&nbsp;</span>';
            }
            $datatable .= '</td></tr>';
        }
    } else {
        my @contexts = ('author','course','domain');
        my @authtypes = ('int','krb4','krb5','loc','lti');
        my %checked;
        if (ref($settings) eq 'HASH') {
            if (ref($settings->{'authtypes'}) eq 'HASH') {
                foreach my $item (@contexts) {
                    if (ref($settings->{'authtypes'}{$item}) eq 'HASH') {
                        foreach my $auth (@authtypes) {
                            if ($settings->{'authtypes'}{$item}{$auth}) {
                                $checked{$item}{$auth} = ' checked="checked" ';
                            }
                        }
                    }
                }
            }
        } else {
            foreach my $item (@contexts) {
                foreach my $auth (@authtypes) {
                    $checked{$item}{$auth} = ' checked="checked" ';
                }
            }
        }
        my %title = &context_names();
        my %authname = &authtype_names();
        my $rownum = 0;
        my $css_class; 
        foreach my $item (@contexts) {
            if ($rownum%2) {
                $css_class = '';
            } else {
                $css_class = ' class="LC_odd_row" ';
            }
            $datatable .=   '<tr'.$css_class.'>'.
                            '<td>'.$title{$item}.
                            '</td><td class="LC_left_item">'.
                            '<span class="LC_nobreak">';
            foreach my $auth (@authtypes) {
                $datatable .= '<label>'. 
                              '<input type="checkbox" name="'.$item.'_auth" '.
                              $checked{$item}{$auth}.' value="'.$auth.'" />'.
                              $authname{$auth}.'</label>&nbsp;';
            }
            $datatable .= '</span></td></tr>';
            $rownum ++;
        }
        $$rowtotal += $rownum;
    }
    return $datatable;
}

sub print_selfcreation {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my (@selfcreate,$createsettings,$processing,$emailoptions,$emailverified,
        $emaildomain,$datatable);
    if (ref($settings) eq 'HASH') {
        if (ref($settings->{'cancreate'}) eq 'HASH') {
            $createsettings = $settings->{'cancreate'};
            if (ref($createsettings) eq 'HASH') {
                if (ref($createsettings->{'selfcreate'}) eq 'ARRAY') {
                    @selfcreate = @{$createsettings->{'selfcreate'}};
                } elsif ($createsettings->{'selfcreate'} ne '') {
                    if ($settings->{'cancreate'}{'selfcreate'} eq 'any') {
                        @selfcreate = ('email','login','sso');
                    } elsif ($createsettings->{'selfcreate'} ne 'none') {
                        @selfcreate = ($createsettings->{'selfcreate'});
                    }
                }
                if (ref($createsettings->{'selfcreateprocessing'}) eq 'HASH') {
                    $processing = $createsettings->{'selfcreateprocessing'};
                }
                if (ref($createsettings->{'emailoptions'}) eq 'HASH') {
                    $emailoptions = $createsettings->{'emailoptions'};
                }
                if (ref($createsettings->{'emailverified'}) eq 'HASH') {
                    $emailverified = $createsettings->{'emailverified'};
                }
                if (ref($createsettings->{'emaildomain'}) eq 'HASH') {
                    $emaildomain = $createsettings->{'emaildomain'};
                }
            }
        }
    }
    my %radiohash;
    my $numinrow = 4;
    map { $radiohash{'cancreate_'.$_} = 1; } @selfcreate;
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    if ($position eq 'top') {
        my %choices = &Apache::lonlocal::texthash (
                                                      cancreate_login      => 'Institutional Login',
                                                      cancreate_sso        => 'Institutional Single Sign On',
                                                  );
        my @toggles = sort(keys(%choices));
        my %defaultchecked = (
                               'cancreate_login' => 'off',
                               'cancreate_sso'   => 'off',
                             );
        my ($onclick,$itemcount);
        ($datatable,$itemcount) = &radiobutton_prefs(\%radiohash,\@toggles,\%defaultchecked,
                                                     \%choices,$itemcount,$onclick);
        $$rowtotal += $itemcount;
        
        if (ref($usertypes) eq 'HASH') {
            if (keys(%{$usertypes}) > 0) {
                $datatable .= &insttypes_row($createsettings,$types,$usertypes,
                                             $dom,$numinrow,$othertitle,
                                             'statustocreate',$rowtotal);
                $$rowtotal ++;
            }
        }
        my @fields = ('lastname','firstname','middlename','permanentemail','id','inststatus');
        my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
        $fieldtitles{'inststatus'} = &mt('Institutional status');
        my $rem;
        my $numperrow = 2;
        my $css_class = $$rowtotal%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'>'.
                     '<td class="LC_left_item">'.&mt('Mapping of Shibboleth environment variable names to user data fields (SSO auth)').'</td>'.
                     '<td class="LC_left_item">'."\n".
                     '<table>'."\n";
        for (my $i=0; $i<@fields; $i++) {
            $rem = $i%($numperrow);
            if ($rem == 0) {
                if ($i > 0) {
                    $datatable .= '</tr>';
                }
                $datatable .= '<tr>';
            }
            my $currval;
            if (ref($createsettings) eq 'HASH') {
                if (ref($createsettings->{'shibenv'}) eq 'HASH') {
                    $currval = $createsettings->{'shibenv'}{$fields[$i]};
                }
            }
            $datatable .= '<td class="LC_left_item">'.
                          '<span class="LC_nobreak">'.
                          '<input type="text" name="shibenv_'.$fields[$i].'" '.
                          'value="'.$currval.'" size="10" />&nbsp;'.
                          $fieldtitles{$fields[$i]}.'</span></td>';
        }
        my $colsleft = $numperrow - $rem;
        if ($colsleft > 1 ) {
            $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                         '&nbsp;</td>';
        } elsif ($colsleft == 1) {
            $datatable .= '<td class="LC_left_item">&nbsp;</td>';
        }
        $datatable .= '</tr></table></td></tr>';
        $$rowtotal ++;
    } elsif ($position eq 'middle') {
        my %domconf = &Apache::lonnet::get_dom('configuration',['usermodification'],$dom);
        my @posstypes;
        if (ref($types) eq 'ARRAY') {
            @posstypes = @{$types};
        }
        unless (grep(/^default$/,@posstypes)) {
            push(@posstypes,'default');
        }
        my %usertypeshash;
        if (ref($usertypes) eq 'HASH') {
            %usertypeshash = %{$usertypes};
        }
        $usertypeshash{'default'} = $othertitle;
        foreach my $status (@posstypes) {
            $datatable .= &modifiable_userdata_row('selfcreate',$status,$domconf{'usermodification'},
                                                   $numinrow,$$rowtotal,\%usertypeshash);
            $$rowtotal ++;
        }
    } else {
        my %choices = &Apache::lonlocal::texthash (
                          'cancreate_email' => 'Non-institutional username (via e-mail verification)',
                                                  );
        my @toggles = sort(keys(%choices));
        my %defaultchecked = (
                               'cancreate_email' => 'off',
                             );
        my $customclass = 'LC_selfcreate_email';
        my $classprefix = 'LC_canmodify_emailusername_';
        my $optionsprefix = 'LC_options_emailusername_';
        my $display = 'none';
        my $rowstyle = 'display:none';
        if (grep(/^\Qemail\E$/,@selfcreate)) {
            $display = 'block';
            $rowstyle = 'display:table-row';
        }
        my $onclick = "toggleRows(this.form,'cancreate_email','selfassign','$customclass','$classprefix','$optionsprefix');";
        ($datatable,$$rowtotal) = &radiobutton_prefs(\%radiohash,\@toggles,\%defaultchecked,
                                                     \%choices,$$rowtotal,$onclick);
        $datatable .= &print_requestmail($dom,'selfcreation',$createsettings,$rowtotal,$customclass,
                                         $rowstyle);
        $$rowtotal ++;
        $datatable .= &captcha_choice('cancreate',$createsettings,$$rowtotal,$customclass,
                                      $rowstyle);
        $$rowtotal ++;
        my (@ordered,@posstypes,%usertypeshash);
        my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
        my ($emailrules,$emailruleorder) =
            &Apache::lonnet::inst_userrules($dom,'email');
        my $primary_id = &Apache::lonnet::domain($dom,'primary');
        my $intdom = &Apache::lonnet::internet_dom($primary_id);
        if (ref($types) eq 'ARRAY') {
            @posstypes = @{$types};
        }
        if (@posstypes) {
            unless (grep(/^default$/,@posstypes)) {
                push(@posstypes,'default');
            }
            if (ref($usertypes) eq 'HASH') {
                %usertypeshash = %{$usertypes};
            }
            my $currassign;
            if (ref($domdefaults{'inststatusguest'}) eq 'ARRAY') {
                $currassign = {
                                  selfassign => $domdefaults{'inststatusguest'},
                              };
                @ordered = @{$domdefaults{'inststatusguest'}};
            } else {
                $currassign = { selfassign => [] };
            }
            my $onclicktypes = "toggleDataRow(this.form,'selfassign','$customclass','$optionsprefix',);".
                               "toggleDataRow(this.form,'selfassign','$customclass','$classprefix',1);";
            $datatable .= &insttypes_row($currassign,$types,$usertypes,$dom,
                                         $numinrow,$othertitle,'selfassign',
                                         $rowtotal,$onclicktypes,$customclass,
                                         $rowstyle);
            $$rowtotal ++;
            $usertypeshash{'default'} = $othertitle;
            foreach my $status (@posstypes) {
                my $css_class;
                if ($$rowtotal%2) {
                    $css_class = 'LC_odd_row ';
                }
                $css_class .= $customclass;
                my $rowid = $optionsprefix.$status;
                my $hidden = 1;
                my $currstyle = 'display:none';
                if (grep(/^\Q$status\E$/,@ordered)) {
                    $currstyle = $rowstyle;
                    $hidden = 0; 
                }
                $datatable .= &noninst_users($processing,$emailverified,$emailoptions,$emaildomain,
                                             $emailrules,$emailruleorder,$settings,$status,$rowid,
                                             $usertypeshash{$status},$css_class,$currstyle,$intdom);
                unless ($hidden) {
                    $$rowtotal ++;
                }
            }
        } else {
            my $css_class;
            if ($$rowtotal%2) {
                $css_class = 'LC_odd_row ';
            }
            $css_class .= $customclass;
            $usertypeshash{'default'} = $othertitle;
            $datatable .= &noninst_users($processing,$emailverified,$emailoptions,$emaildomain,
                                         $emailrules,$emailruleorder,$settings,'default','',
                                         $othertitle,$css_class,$rowstyle,$intdom);
            $$rowtotal ++;
        }
        my ($infofields,$infotitles) = &Apache::loncommon::emailusername_info();
        $numinrow = 1;
        if (@posstypes) {
            foreach my $status (@posstypes) {
                my $rowid = $classprefix.$status;
                my $datarowstyle = 'display:none';
                if (grep(/^\Q$status\E$/,@ordered)) { 
                    $datarowstyle = $rowstyle; 
                }
                $datatable .= &modifiable_userdata_row('cancreate','emailusername_'.$status,$settings,
                                                       $numinrow,$$rowtotal,\%usertypeshash,$infofields,
                                                       $infotitles,$rowid,$customclass,$datarowstyle);
                unless ($datarowstyle eq 'display:none') {
                    $$rowtotal ++;
                }
            }
        } else {
            $datatable .= &modifiable_userdata_row('cancreate','emailusername_default',$settings,
                                                   $numinrow,$$rowtotal,\%usertypeshash,$infofields,
                                                   $infotitles,'',$customclass,$rowstyle);
        }
    }
    return $datatable;
}

sub selfcreate_javascript {
    return <<"ENDSCRIPT";

<script type="text/javascript">
// <![CDATA[

function toggleRows(form,radio,checkbox,target,prefix,altprefix) {
    var x = document.getElementsByClassName(target);
    var insttypes = 0;
    var insttypeRegExp = new RegExp(prefix);
    if ((x.length != undefined) && (x.length > 0)) {
        if (form.elements[radio].length != undefined) {
            for (var i=0; i<form.elements[radio].length; i++) {
                if (form.elements[radio][i].checked) {
                    if (form.elements[radio][i].value == 1) {
                        for (var j=0; j<x.length; j++) {
                            if (x[j].id == 'undefined') {
                                x[j].style.display = 'table-row';
                            } else if (insttypeRegExp.test(x[j].id)) {
                                insttypes ++;
                            } else {
                                x[j].style.display = 'table-row';
                            }
                        }
                    } else {
                        for (var j=0; j<x.length; j++) {
                            x[j].style.display = 'none';
                        }
                    }
                    break;
                }
            }
            if (insttypes > 0) {
                toggleDataRow(form,checkbox,target,altprefix);
                toggleDataRow(form,checkbox,target,prefix,1);
            }
        }
    }
    return;
}

function toggleDataRow(form,checkbox,target,prefix,docount) {
    if (form.elements[checkbox].length != undefined) {
        var count = 0;
        if (docount) {
            for (var i=0; i<form.elements[checkbox].length; i++) {
                if (form.elements[checkbox][i].checked) {
                    count ++;
                }
            }
        }
        for (var i=0; i<form.elements[checkbox].length; i++) {
            var type = form.elements[checkbox][i].value;
            if (document.getElementById(prefix+type)) {
                if (form.elements[checkbox][i].checked) {
                    document.getElementById(prefix+type).style.display = 'table-row';
                    if (count % 2 == 1) {
                        document.getElementById(prefix+type).className = target+' LC_odd_row';
                    } else {
                        document.getElementById(prefix+type).className = target;
                    }
                    count ++;
                } else {
                    document.getElementById(prefix+type).style.display = 'none';
                }
            }
        }
    }
    return;
}

function toggleEmailOptions(form,radio,prefix,altprefix,status) {
    var caller = radio+'_'+status;
    if (form.elements[caller].length != undefined) {
        for (var i=0; i<form.elements[caller].length; i++) {
            if (form.elements[caller][i].checked) {
                if (document.getElementById(altprefix+'_inst_'+status)) {
                    var curr = form.elements[caller][i].value;
                    if (prefix) {
                        document.getElementById(prefix+'_'+status).style.display = 'none';
                    }
                    document.getElementById(altprefix+'_inst_'+status).style.display = 'none';
                    document.getElementById(altprefix+'_noninst_'+status).style.display = 'none';
                    if (curr == 'custom') {
                        if (prefix) { 
                            document.getElementById(prefix+'_'+status).style.display = 'inline';
                        }
                    } else if (curr == 'inst') {
                        document.getElementById(altprefix+'_inst_'+status).style.display = 'inline';
                    } else if (curr == 'noninst') {
                        document.getElementById(altprefix+'_noninst_'+status).style.display = 'inline';
                    }
                    break;
                }
            }
        }
    }
}

// ]]>
</script>

ENDSCRIPT
}

sub noninst_users {
    my ($processing,$emailverified,$emailoptions,$emaildomain,$emailrules,
        $emailruleorder,$settings,$type,$rowid,$typetitle,$css_class,$rowstyle,$intdom) = @_; 
    my $class = 'LC_left_item';
    if ($css_class) {
        $css_class = ' class="'.$css_class.'"'; 
    }
    if ($rowid) {
        $rowid = ' id="'.$rowid.'"';
    }
    if ($rowstyle) {
        $rowstyle = ' style="'.$rowstyle.'"';
    }
    my ($output,$description);
    if ($type eq 'default') {
        $description = &mt('Requests for: [_1]',$typetitle);
    } else {
        $description = &mt('Requests for: [_1] (status self-reported)',$typetitle);
    }
    $output = '<tr'.$css_class.$rowid.$rowstyle.'>'.
              "<td>$description</td>\n".           
              '<td class="'.$class.'" colspan="2">'.
              '<table><tr>';
    my %headers = &Apache::lonlocal::texthash( 
              approve  => 'Processing',
              email    => 'E-mail',
              username => 'Username',
    );
    foreach my $item ('approve','email','username') {
        $output .= '<th>'.$headers{$item}.'</th>';
    }
    $output .= '</tr><tr>';
    foreach my $item ('approve','email','username') {
        $output .= '<td style="vertical-align: top">';
        my (%choices,@options,$hashref,$defoption,$name,$onclick,$hascustom);
        if ($item eq 'approve') {
            %choices = &Apache::lonlocal::texthash (
                                                     automatic => 'Automatically approved',
                                                     approval  => 'Queued for approval',
                                                   );
            @options = ('automatic','approval');
            $hashref = $processing;
            $defoption = 'automatic';
            $name = 'cancreate_emailprocess_'.$type;
        } elsif ($item eq 'email') {
            %choices = &Apache::lonlocal::texthash (
                                                     any     => 'Any e-mail',
                                                     inst    => 'Institutional only',
                                                     noninst => 'Non-institutional only',
                                                     custom  => 'Custom restrictions',
                                                   );
            @options = ('any','inst','noninst');
            my $showcustom;
            if (ref($emailrules) eq 'HASH') {
                if (keys(%{$emailrules}) > 0) {
                    push(@options,'custom');
                    $showcustom = 'cancreate_emailrule';
                    if (ref($settings) eq 'HASH') {
                        if (ref($settings->{'email_rule'}) eq 'ARRAY') {
                            foreach my $rule (@{$settings->{'email_rule'}}) {
                                if (exists($emailrules->{$rule})) {
                                    $hascustom ++;
                                }
                            }
                        } elsif (ref($settings->{'email_rule'}) eq 'HASH') {
                            if (ref($settings->{'email_rule'}{$type}) eq 'ARRAY') {
                                foreach my $rule (@{$settings->{'email_rule'}{$type}}) {
                                    if (exists($emailrules->{$rule})) {
                                        $hascustom ++;
                                    }
                                }
                            }
                        }
                    }
                }
            }
            $onclick = ' onclick="toggleEmailOptions(this.form,'."'cancreate_emailoptions','$showcustom',".
                                                     "'cancreate_emaildomain','$type'".');"';
            $hashref = $emailoptions;
            $defoption = 'any';
            $name = 'cancreate_emailoptions_'.$type;
        } elsif ($item eq 'username') {
            %choices = &Apache::lonlocal::texthash (
                                                     all    => 'Same as e-mail',
                                                     first  => 'Omit @domain',
                                                     free   => 'Free to choose',
                                                   );
            @options = ('all','first','free');
            $hashref = $emailverified;
            $defoption = 'all';
            $name = 'cancreate_usernameoptions_'.$type;
        }
        foreach my $option (@options) {
            my $checked;
            if (ref($hashref) eq 'HASH') {
                if ($type eq '') {
                    if (!exists($hashref->{'default'})) {
                        if ($option eq $defoption) {
                            $checked = ' checked="checked"';
                        }
                    } else {
                        if ($hashref->{'default'} eq $option) {
                            $checked = ' checked="checked"';
                        }
                    }
                } else {
                    if (!exists($hashref->{$type})) {
                        if ($option eq $defoption) {
                            $checked = ' checked="checked"';
                        }
                    } else {
                        if ($hashref->{$type} eq $option) {
                            $checked = ' checked="checked"';
                        }
                    }
                }
            } elsif (($item eq 'email') && ($hascustom)) {
                if ($option eq 'custom') {
                    $checked = ' checked="checked"';
                }
            } elsif ($option eq $defoption) {
                $checked = ' checked="checked"';
            }
            $output .= '<span class="LC_nobreak"><label>'.
                       '<input type="radio" name="'.$name.'"'.
                       $checked.' value="'.$option.'"'.$onclick.' />'.
                       $choices{$option}.'</label></span><br />';
            if ($item eq 'email') {
                if ($option eq 'custom') {
                    my $id = 'cancreate_emailrule_'.$type;
                    my $display = 'none';
                    if ($checked) {
                        $display = 'inline';
                    }
                    my $numinrow = 2;
                    $output .= '<fieldset id="'.$id.'" style="display:'.$display.';">'.
                               '<legend>'.&mt('Disallow').'</legend><table>'.
                               &user_formats_row('email',$settings,$emailrules,
                                                 $emailruleorder,$numinrow,'',$type);
                              '</table></fieldset>';
                } elsif (($option eq 'inst') || ($option eq 'noninst')) {
                    my %text = &Apache::lonlocal::texthash (
                                                             inst    => 'must end:',
                                                             noninst => 'cannot end:',
                                                           );
                    my $value;
                    if (ref($emaildomain) eq 'HASH') {
                        if (ref($emaildomain->{$type}) eq 'HASH') {
                            $value = $emaildomain->{$type}->{$option}; 
                        }
                    }
                    if ($value eq '') {
                        $value = '@'.$intdom;
                    }
                    my $condition = 'cancreate_emaildomain_'.$option.'_'.$type;
                    my $display = 'none';
                    if ($checked) {
                        $display = 'inline';
                    }
                    $output .= '<div id="'.$condition.'" style="display:'.$display.';">'.
                               '<span class="LC_domprefs_email">'.$text{$option}.'</span> '.
                               '<input type="text" name="'.$condition.'" value="'.$value.'" size="10" />'.
                               '</div>';
                }
            }
        }
        $output .= '</td>'."\n";
    }
    $output .= "</tr></table></td></tr>\n";
    return $output;
}

sub captcha_choice {
    my ($context,$settings,$itemcount,$customcss,$rowstyle) = @_;
    my ($keyentry,$currpub,$currpriv,%checked,$rowname,$pubtext,$privtext,
        $vertext,$currver);
    my %lt = &captcha_phrases();
    $keyentry = 'hidden';
    my $colspan=2;
    if ($context eq 'cancreate') {
        $rowname = &mt('CAPTCHA validation');
    } elsif ($context eq 'login') {
        $rowname =  &mt('"Contact helpdesk" CAPTCHA validation');
    } elsif ($context eq 'passwords') {
        $rowname = &mt('"Forgot Password" CAPTCHA validation');
        $colspan=1;
    }
    if (ref($settings) eq 'HASH') {
        if ($settings->{'captcha'}) {
            $checked{$settings->{'captcha'}} = ' checked="checked"';
        } else {
            $checked{'original'} = ' checked="checked"';
        }
        if ($settings->{'captcha'} eq 'recaptcha') {
            $pubtext = $lt{'pub'};
            $privtext = $lt{'priv'};
            $keyentry = 'text';
            $vertext = $lt{'ver'};
            $currver = $settings->{'recaptchaversion'};
            if ($currver ne '2') {
                $currver = 1;
            }
        }
        if (ref($settings->{'recaptchakeys'}) eq 'HASH') {
            $currpub = $settings->{'recaptchakeys'}{'public'};
            $currpriv = $settings->{'recaptchakeys'}{'private'};
        }
    } else {
        $checked{'original'} = ' checked="checked"';
    }
    my $css_class;
    if ($itemcount%2) {
        $css_class = 'LC_odd_row';
    }
    if ($customcss) {
        $css_class .= " $customcss";
    }
    $css_class =~ s/^\s+//;
    if ($css_class) {
        $css_class = ' class="'.$css_class.'"';
    }
    if ($rowstyle) {
        $css_class .= ' style="'.$rowstyle.'"';
    }
    my $output = '<tr'.$css_class.'>'.
                 '<td class="LC_left_item">'.$rowname.'</td><td class="LC_left_item" colspan="'.$colspan.'">'."\n".
                 '<table><tr><td>'."\n";
    foreach my $option ('original','recaptcha','notused') {
        $output .= '<span class="LC_nobreak"><label><input type="radio" name="'.$context.'_captcha" value="'.
                   $option.'" '.$checked{$option}.' onchange="javascript:updateCaptcha('."this,'$context'".');" />'.
                   $lt{$option}.'</label></span>';
        unless ($option eq 'notused') {
            $output .= ('&nbsp;'x2)."\n";
        }
    }
#
# Note: If reCAPTCHA is to be used for LON-CAPA servers in a domain, a domain coordinator should visit:
# https://www.google.com/recaptcha and generate a Public and Private key. For domains with multiple
# servers a single key pair will be used for all servers, so the internet domain (e.g., yourcollege.edu)
# specified for use with the key should be broad enough to accommodate all servers in the LON-CAPA domain.
#
    $output .= '</td></tr>'."\n".
               '<tr><td class="LC_zero_height">'."\n".
               '<span class="LC_nobreak"><span id="'.$context.'_recaptchapubtxt">'.$pubtext.'</span>&nbsp;'."\n".
               '<input type="'.$keyentry.'" id="'.$context.'_recaptchapub" name="'.$context.'_recaptchapub" value="'.
               $currpub.'" size="40" /></span><br />'."\n".
               '<span class="LC_nobreak"><span id="'.$context.'_recaptchaprivtxt">'.$privtext.'</span>&nbsp;'."\n".
               '<input type="'.$keyentry.'" id="'.$context.'_recaptchapriv" name="'.$context.'_recaptchapriv" value="'.
               $currpriv.'" size="40" /></span><br />'.
               '<span class="LC_nobreak"><span id="'.$context.'_recaptchavertxt">'.$vertext.'</span>&nbsp;'."\n".
               '<input type="'.$keyentry.'" id="'.$context.'_recaptchaversion" name="'.$context.'_recaptchaversion" value="'.
               $currver.'" size="3" /></span><br />'.
               '</td></tr></table>'."\n".
               '</td></tr>';
    return $output;
}

sub user_formats_row {
    my ($type,$settings,$rules,$ruleorder,$numinrow,$rowcount,$status) = @_;
    my $output;
    my %text = (
                   'username' => 'new usernames',
                   'id'       => 'IDs',
               );
    unless ($type eq 'email') {
        my $css_class = $rowcount%2?' class="LC_odd_row"':'';
        $output = '<tr '.$css_class.'>'.
                  '<td><span class="LC_nobreak">'.
                  &mt("Format rules to check for $text{$type}: ").
                  '</td><td class="LC_left_item" colspan="2"><table>';
    }
    my $rem;
    if (ref($ruleorder) eq 'ARRAY') {
        for (my $i=0; $i<@{$ruleorder}; $i++) {
            if (ref($rules->{$ruleorder->[$i]}) eq 'HASH') {
                my $rem = $i%($numinrow);
                if ($rem == 0) {
                    if ($i > 0) {
                        $output .= '</tr>';
                    }
                    $output .= '<tr>';
                }
                my $check = ' ';
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{$type.'_rule'}) eq 'ARRAY') {
                        if (grep(/^\Q$ruleorder->[$i]\E$/,@{$settings->{$type.'_rule'}})) {
                            $check = ' checked="checked" ';
                        }
                    } elsif ((ref($settings->{$type.'_rule'}) eq 'HASH') && ($status ne '')) {
                        if (ref($settings->{$type.'_rule'}->{$status}) eq 'ARRAY') {
                            if (grep(/^\Q$ruleorder->[$i]\E$/,@{$settings->{$type.'_rule'}->{$status}})) {
                                $check = ' checked="checked" ';
                            }
                        }
                    }
                }
                my $name = $type.'_rule';
                if ($type eq 'email') {
                    $name .= '_'.$status;
                }
                $output .= '<td class="LC_left_item">'.
                           '<span class="LC_nobreak"><label>'.
                           '<input type="checkbox" name="'.$name.'" '.
                           'value="'.$ruleorder->[$i].'"'.$check.'/>'.
                           $rules->{$ruleorder->[$i]}{'name'}.'</label></span></td>';
            }
        }
        $rem = @{$ruleorder}%($numinrow);
    }
    my $colsleft;
    if ($rem) {
        $colsleft = $numinrow - $rem;
    }
    if ($colsleft > 1 ) {
        $output .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                   '&nbsp;</td>';
    } elsif ($colsleft == 1) {
        $output .= '<td class="LC_left_item">&nbsp;</td>';
    }
    $output .= '</tr></table>';
    unless ($type eq 'email') {
        $output .= '</td></tr>';
    }
    return $output;
}

sub usercreation_types {
    my %lt = &Apache::lonlocal::texthash (
                    author     => 'When adding a co-author',
                    course     => 'When adding a user to a course',
                    requestcrs => 'When requesting a course',
                    any        => 'Any',
                    official   => 'Institutional only ',
                    unofficial => 'Non-institutional only',
                    none       => 'None',
    );
    return %lt;
}

sub selfcreation_types {
    my %lt = &Apache::lonlocal::texthash (
                    selfcreate => 'User creates own account',
                    any        => 'Any',
                    official   => 'Institutional only ',
                    unofficial => 'Non-institutional only',
                    email      => 'E-mail address',
                    login      => 'Institutional Login',
                    sso        => 'SSO',
             );
}

sub authtype_names {
    my %lt = &Apache::lonlocal::texthash(
                      int    => 'Internal',
                      krb4   => 'Kerberos 4',
                      krb5   => 'Kerberos 5',
                      loc    => 'Local',
                      lti    => 'LTI',
                  );
    return %lt;
}

sub context_names {
    my %context_title = &Apache::lonlocal::texthash(
       author => 'Creating users when an Author',
       course => 'Creating users when in a course',
       domain => 'Creating users when a Domain Coordinator',
    );
    return %context_title;
}

sub print_usermodification {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $numinrow = 4;
    my ($context,$datatable,$rowcount);
    if ($position eq 'top') {
        $rowcount = 0;
        $context = 'author'; 
        foreach my $role ('ca','aa') {
            $datatable .= &modifiable_userdata_row($context,$role,$settings,
                                                   $numinrow,$rowcount);
            $$rowtotal ++;
            $rowcount ++;
        }
    } elsif ($position eq 'bottom') {
        $context = 'course';
        $rowcount = 0;
        foreach my $role ('st','ep','ta','in','cr') {
            $datatable .= &modifiable_userdata_row($context,$role,$settings,
                                                   $numinrow,$rowcount);
            $$rowtotal ++;
            $rowcount ++;
        }
    }
    return $datatable;
}

sub print_defaults {
    my ($position,$dom,$settings,$rowtotal) = @_;
    my $rownum = 0;
    my ($datatable,$css_class,$titles);
    unless ($position eq 'bottom') {
        $titles = &defaults_titles($dom);
    }
    if ($position eq 'top') {
        my @items = ('auth_def','auth_arg_def','lang_def','timezone_def',
                     'datelocale_def','portal_def');
        my %defaults;
        if (ref($settings) eq 'HASH') {
            %defaults = %{$settings};
        } else {
            my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
            foreach my $item (@items) {
                $defaults{$item} = $domdefaults{$item};
            }
        }
        foreach my $item (@items) {
            if ($rownum%2) {
                $css_class = '';
            } else {
                $css_class = ' class="LC_odd_row" ';
            }
            $datatable .= '<tr'.$css_class.'>'.
                          '<td><span class="LC_nobreak">'.$titles->{$item}.
                          '</span></td><td class="LC_right_item" colspan="3">';
            if ($item eq 'auth_def') {
                my @authtypes = ('internal','krb4','krb5','localauth','lti');
                my %shortauth = (
                                 internal => 'int',
                                 krb4 => 'krb4',
                                 krb5 => 'krb5',
                                 localauth  => 'loc',
                                 lti => 'lti',
                                );
                my %authnames = &authtype_names();
                foreach my $auth (@authtypes) {
                    my $checked = ' ';
                    if ($defaults{$item} eq $auth) {
                        $checked = ' checked="checked" ';
                    }
                    $datatable .= '<label><input type="radio" name="'.$item.
                                  '" value="'.$auth.'"'.$checked.'/>'.
                                  $authnames{$shortauth{$auth}}.'</label>&nbsp;&nbsp;';
                }
            } elsif ($item eq 'timezone_def') {
                my $includeempty = 1;
                $datatable .= &Apache::loncommon::select_timezone($item,$defaults{$item},undef,$includeempty);
            } elsif ($item eq 'datelocale_def') {
                my $includeempty = 1;
                $datatable .= &Apache::loncommon::select_datelocale($item,$defaults{$item},undef,$includeempty);
            } elsif ($item eq 'lang_def') {
                my $includeempty = 1;
                $datatable .= &Apache::loncommon::select_language($item,$defaults{$item},$includeempty);
            } else {
                my $size;
                if ($item eq 'portal_def') {
                    $size = ' size="25"';
                }
                $datatable .= '<input type="text" name="'.$item.'" value="'.
                              $defaults{$item}.'"'.$size.' />';
            }
            $datatable .= '</td></tr>';
            $rownum ++;
        }
    } else {
        my %defaults;
        if (ref($settings) eq 'HASH') {
            if ((ref($settings->{'inststatusorder'}) eq 'ARRAY') && (ref($settings->{'inststatustypes'}) eq 'HASH')) {
                my $maxnum = @{$settings->{'inststatusorder'}};
                for (my $i=0; $i<$maxnum; $i++) {
                    $css_class = $rownum%2?' class="LC_odd_row"':'';
                    my $item = $settings->{'inststatusorder'}->[$i];
                    my $title = $settings->{'inststatustypes'}->{$item};
                    my $chgstr = ' onchange="javascript:reorderTypes(this.form,'."'$item'".');"';
                    $datatable .= '<tr'.$css_class.'>'.
                                  '<td><span class="LC_nobreak">'.
                                  '<select name="inststatus_pos_'.$item.'"'.$chgstr.'>';
                    for (my $k=0; $k<=$maxnum; $k++) {
                        my $vpos = $k+1;
                        my $selstr;
                        if ($k == $i) {
                            $selstr = ' selected="selected" ';
                        }
                        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
                    }
                    $datatable .= '</select>&nbsp;'.&mt('Internal ID:').'&nbsp;<b>'.$item.'</b>&nbsp;'.
                                  '<input type="checkbox" name="inststatus_delete" value="'.$item.'" />'.
                                  &mt('delete').'</span></td>'.
                                  '<td class="LC_left_item" colspan="2"><span class="LC_nobreak">'.&mt('Name displayed').':'.
                                  '<input type="text" size="20" name="inststatus_title_'.$item.'" value="'.$title.'" />'.
                                  '</span></td></tr>';
                }
                $css_class = $rownum%2?' class="LC_odd_row"':'';
                my $chgstr = ' onchange="javascript:reorderTypes(this.form,'."'addinststatus_pos'".');"';
                $datatable .= '<tr '.$css_class.'>'.
                              '<td><span class="LC_nobreak"><select name="addinststatus_pos"'.$chgstr.'>';
                for (my $k=0; $k<=$maxnum; $k++) {
                    my $vpos = $k+1;
                    my $selstr;
                    if ($k == $maxnum) {
                        $selstr = ' selected="selected" ';
                    }
                    $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
                }
                $datatable .= '</select>&nbsp;'.&mt('Internal ID:').
                              '<input type="text" size="10" name="addinststatus" value="" />'.
                              '&nbsp;'.&mt('(new)').
                              '</span></td><td class="LC_left_item" colspan="2"><span class="LC_nobreak">'.
                              &mt('Name displayed').':'.
                              '<input type="text" size="20" name="addinststatus_title" value="" /></span></td>'.
                              '</tr>'."\n";
                $rownum ++;
            }
        }
    }
    $$rowtotal += $rownum;
    return $datatable;
}

sub get_languages_hash {
    my %langchoices;
    foreach my $id (&Apache::loncommon::languageids()) {
        my $code = &Apache::loncommon::supportedlanguagecode($id);
        if ($code ne '') {
            $langchoices{$code} =  &Apache::loncommon::plainlanguagedescription($id);
        }
    }
    return %langchoices;
}

sub defaults_titles {
    my ($dom) = @_;
    my %titles = &Apache::lonlocal::texthash (
                   'auth_def'      => 'Default authentication type',
                   'auth_arg_def'  => 'Default authentication argument',
                   'lang_def'      => 'Default language',
                   'timezone_def'  => 'Default timezone',
                   'datelocale_def' => 'Default locale for dates',
                   'portal_def'     => 'Portal/Default URL',
                   'intauth_cost'   => 'Encryption cost for bcrypt (positive integer)',
                   'intauth_check'  => 'Check bcrypt cost if authenticated',
                   'intauth_switch' => 'Existing crypt-based switched to bcrypt on authentication',
                 );
    if ($dom) {
        my $uprimary_id = &Apache::lonnet::domain($dom,'primary');
        my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
        my $protocol = $Apache::lonnet::protocol{$uprimary_id};
        $protocol = 'http' if ($protocol ne 'https');
        if ($uint_dom) {
            $titles{'portal_def'} .= ' '.&mt('(for example: [_1])',$protocol.'://loncapa.'.
                                         $uint_dom);
        }
    }
    return (\%titles);
}

sub print_scantron {
    my ($r,$position,$dom,$confname,$settings,$rowtotal) = @_;
    if ($position eq 'top') {
        return &print_scantronformat($r,$dom,$confname,$settings,\$rowtotal);
    } else {
        return &print_scantronconfig($dom,$settings,\$rowtotal);
    }
}

sub scantron_javascript {
    return <<"ENDSCRIPT";

<script type="text/javascript">
// <![CDATA[

function toggleScantron(form) {
    var csvfieldset = new Array();
    if (document.getElementById('scantroncsv_cols')) {
        csvfieldset.push(document.getElementById('scantroncsv_cols'));
    }
    if (document.getElementById('scantroncsv_options')) {
        csvfieldset.push(document.getElementById('scantroncsv_options'));
    }
    if (csvfieldset.length) {
        if (document.getElementById('scantronconfcsv')) {
            var scantroncsv = document.getElementById('scantronconfcsv');
            if (scantroncsv.checked) {
                for (var i=0; i<csvfieldset.length; i++) {
                    csvfieldset[i].style.display = 'block';
                }
            } else {
                for (var i=0; i<csvfieldset.length; i++) {
                    csvfieldset[i].style.display = 'none';
                }
                var csvselects = document.getElementsByClassName('scantronconfig_csv');
                if (csvselects.length) {
                    for (var j=0; j<csvselects.length; j++) {
                        csvselects[j].selectedIndex = 0;
                    }
                }
            }
        }
    }
    return;
}
// ]]>
</script>

ENDSCRIPT

}

sub print_scantronformat {
    my ($r,$dom,$confname,$settings,$rowtotal) = @_;
    my $itemcount = 1;
    my ($datatable,$css_class,$scantronurl,$is_custom,%error,%scantronurls,
        %confhash);
    my $switchserver = &check_switchserver($dom,$confname);
    my %lt = &Apache::lonlocal::texthash (
                default => 'Default bubblesheet format file error',
                custom  => 'Custom bubblesheet format file error',
             );
    my %scantronfiles = (
        default => 'default.tab',
        custom => 'custom.tab',
    );
    foreach my $key (keys(%scantronfiles)) {
        $scantronurls{$key} = '/res/'.$dom.'/'.$confname.'/scantron/'
                              .$scantronfiles{$key};
    }
    my @defaultinfo = &Apache::lonnet::stat_file($scantronurls{'default'});
    if ((!@defaultinfo) || ($defaultinfo[0] eq 'no_such_dir')) {
        if (!$switchserver) {
            my $servadm = $r->dir_config('lonAdmEMail');
            my ($configuserok,$author_ok) = &config_check($dom,$confname,$servadm);
            if ($configuserok eq 'ok') {
                if ($author_ok eq 'ok') {
                    my %legacyfile = (
 default => $Apache::lonnet::perlvar{'lonTabDir'}.'/default_scantronformat.tab',
 custom  => $Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab',
                    );
                    my %md5chk;
                    foreach my $type (keys(%legacyfile)) {
                        ($md5chk{$type}) = split(/ /,`md5sum $legacyfile{$type}`);
                        chomp($md5chk{$type});
                    }
                    if ($md5chk{'default'} ne $md5chk{'custom'}) {
                        foreach my $type (keys(%legacyfile)) {
                            ($scantronurls{$type},my $error) =
                                &legacy_scantronformat($r,$dom,$confname,
                                                 $type,$legacyfile{$type},
                                                 $scantronurls{$type},
                                                 $scantronfiles{$type});
                            if ($error ne '') {
                                $error{$type} = $error;
                            }
                        }
                        if (keys(%error) == 0) {
                            $is_custom = 1;
                            $confhash{'scantron'}{'scantronformat'} =
                                $scantronurls{'custom'};
                            my $putresult =
                                &Apache::lonnet::put_dom('configuration',
                                                         \%confhash,$dom);
                            if ($putresult ne 'ok') {
                                $error{'custom'} =
                                    '<span class="LC_error">'.
                                    &mt('An error occurred updating the domain configuration: [_1]',$putresult).'</span>';
                            }
                        }
                    } else {
                        ($scantronurls{'default'},my $error) =
                            &legacy_scantronformat($r,$dom,$confname,
                                          'default',$legacyfile{'default'},
                                          $scantronurls{'default'},
                                          $scantronfiles{'default'});
                        if ($error eq '') {
                            $confhash{'scantron'}{'scantronformat'} = ''; 
                            my $putresult =
                                &Apache::lonnet::put_dom('configuration',
                                                         \%confhash,$dom);
                            if ($putresult ne 'ok') {
                                $error{'default'} =
                                    '<span class="LC_error">'.
                                    &mt('An error occurred updating the domain configuration: [_1]',$putresult).'</span>';
                            }
                        } else {
                            $error{'default'} = $error;
                        }
                    }
                }
            }
        } else {
            $error{'default'} = &mt("Unable to copy default bubblesheet formatfile to domain's RES space: [_1]",$switchserver);
        }
    }
    if (ref($settings) eq 'HASH') {
        if ($settings->{'scantronformat'} eq "/res/$dom/$confname/scantron/custom.tab") {
            my @info = &Apache::lonnet::stat_file($settings->{'scantronformat'});
            if ((!@info) || ($info[0] eq 'no_such_dir')) {
                $scantronurl = '';
            } else {
                $scantronurl = $settings->{'scantronformat'};
            }
            $is_custom = 1;
        } else {
            $scantronurl = $scantronurls{'default'};
        }
    } else {
        if ($is_custom) {
            $scantronurl = $scantronurls{'custom'};
        } else {
            $scantronurl = $scantronurls{'default'};
        }
    }
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    $datatable .= '<tr'.$css_class.'>';
    if (!$is_custom) {
        $datatable .= '<td>'.&mt('Default in use:').'<br />'.
                      '<span class="LC_nobreak">';
        if ($scantronurl) {
            $datatable .= &Apache::loncommon::modal_link($scantronurl,&mt('Default bubblesheet format file'),600,500,
                                                         undef,undef,undef,undef,'background-color:#ffffff');
        } else {
            $datatable = &mt('File unavailable for display');
        }
        $datatable .= '</span></td>';
        if (keys(%error) == 0) { 
            $datatable .= '<td style="vertical-align: bottom">';
            if (!$switchserver) {
                $datatable .= &mt('Upload:').'<br />';
            }
        } else {
            my $errorstr;
            foreach my $key (sort(keys(%error))) {
                $errorstr .= $lt{$key}.': '.$error{$key}.'<br />';
            }
            $datatable .= '<td>'.$errorstr;
        }
    } else {
        if (keys(%error) > 0) {
            my $errorstr;
            foreach my $key (sort(keys(%error))) {
                $errorstr .= $lt{$key}.': '.$error{$key}.'<br />';
            } 
            $datatable .= '<td>'.$errorstr.'</td><td>&nbsp;';
        } elsif ($scantronurl) {
            my $link =  &Apache::loncommon::modal_link($scantronurl,&mt('Custom bubblesheet format file'),600,500,
                                                       undef,undef,undef,undef,'background-color:#ffffff');
            $datatable .= '<td><span class="LC_nobreak">'.
                          $link.
                          '<label><input type="checkbox" name="scantronformat_del"'.
                          ' value="1" />'.&mt('Delete?').'</label></span></td>'.
                          '<td><span class="LC_nobreak">&nbsp;'.
                          &mt('Replace:').'</span><br />';
        }
    }
    if (keys(%error) == 0) {
        if ($switchserver) {
            $datatable .= &mt('Upload to library server: [_1]',$switchserver);
        } else {
            $datatable .='<span class="LC_nobreak">&nbsp;'.
                         '<input type="file" name="scantronformat" /></span>';
        }
    }
    $datatable .= '</td></tr>';
    $$rowtotal ++;
    return $datatable;
}

sub legacy_scantronformat {
    my ($r,$dom,$confname,$file,$legacyfile,$newurl,$newfile) = @_;
    my ($url,$error);
    my @statinfo = &Apache::lonnet::stat_file($newurl);
    if ((!@statinfo) || ($statinfo[0] eq 'no_such_dir')) {
        (my $result,$url) =
            &publishlogo($r,'copy',$legacyfile,$dom,$confname,'scantron',
                         '','',$newfile);
        if ($result ne 'ok') {
            $error = &mt("An error occurred publishing the [_1] bubblesheet format file in RES space. Error was: [_2].",$newfile,$result);
        }
    }
    return ($url,$error);
}

sub print_scantronconfig {
    my ($dom,$settings,$rowtotal) = @_;
    my $itemcount = 2;
    my $is_checked = ' checked="checked"';
    my %optionson = (
                     hdr => ' checked="checked"',
                     pad => ' checked="checked"',
                     rem => ' checked="checked"',
                    );
    my %optionsoff = (
                      hdr => '',
                      pad => '',
                      rem => '',
                     );
    my $currcsvsty = 'none';
    my ($datatable,%csvfields,%checked,%onclick,%csvoptions);
    my @fields = &scantroncsv_fields();
    my %titles = &scantronconfig_titles();
    if (ref($settings) eq 'HASH') {
        if (ref($settings->{config}) eq 'HASH') {
            if ($settings->{config}->{dat}) {
                $checked{'dat'} = $is_checked;
            }
            if (ref($settings->{config}->{csv}) eq 'HASH') {
                if (ref($settings->{config}->{csv}->{fields}) eq 'HASH') {
                    %csvfields = %{$settings->{config}->{csv}->{fields}};
                    if (keys(%csvfields) > 0) {
                        $checked{'csv'} = $is_checked;
                        $currcsvsty = 'block';
                    }
                }
                if (ref($settings->{config}->{csv}->{options}) eq 'HASH') {
                    %csvoptions = %{$settings->{config}->{csv}->{options}};
                    foreach my $option (keys(%optionson)) {
                        unless ($csvoptions{$option}) {
                            $optionsoff{$option} = $optionson{$option};
                            $optionson{$option} = '';
                        }
                    }
                }
            }
        } else {
            $checked{'dat'} = $is_checked;
        }
    } else {
        $checked{'dat'} = $is_checked;
    }
    $onclick{'csv'} = ' onclick="toggleScantron(this.form);"';
    my $css_class = $itemcount%2? ' class="LC_odd_row"':'';
    $datatable = '<tr '.$css_class.'><td>'.&mt('Supported formats').'</td>'.
                 '<td class="LC_left_item" valign="top"><span class="LC_nobreak">';
    foreach my $item ('dat','csv') {
        my $id;
        if ($item eq 'csv') {
            $id = 'id="scantronconfcsv" ';
        }
        $datatable .= '<label><input type="checkbox" name="scantronconfig" '.$id.'value="'.$item.'"'.$checked{$item}.$onclick{$item}.' />'.
                      $titles{$item}.'</label>'.('&nbsp;'x3);
        if ($item eq 'csv') {
            $datatable .= '<fieldset style="display:'.$currcsvsty.'" id="scantroncsv_cols">'.
                          '<legend>'.&mt('CSV Column Mapping').'</legend>'.
                          '<table><tr><th>'.&mt('Field').'</th><th>'.&mt('Location').'</th></tr>'."\n";
            foreach my $col (@fields) {
                my $selnone;
                if ($csvfields{$col} eq '') {
                    $selnone = ' selected="selected"';
                }
                $datatable .= '<tr><td>'.$titles{$col}.'</td>'.
                              '<td><select name="scantronconfig_csv_'.$col.'" class="scantronconfig_csv">'.
                              '<option value=""'.$selnone.'></option>';
                for (my $i=0; $i<20; $i++) {
                    my $shown = $i+1;
                    my $sel;
                    unless ($selnone) {
                        if (exists($csvfields{$col})) {
                            if ($csvfields{$col} == $i) {
                                $sel = ' selected="selected"';
                            }
                        }
                    }
                    $datatable .= '<option value="'.$i.'"'.$sel.'>'.$shown.'</option>';
                }
                $datatable .= '</select></td></tr>';
           }
           $datatable .= '</table></fieldset>'.
                         '<fieldset style="display:'.$currcsvsty.'" id="scantroncsv_options">'.
                         '<legend>'.&mt('CSV Options').'</legend>';
           foreach my $option ('hdr','pad','rem') {
               $datatable .= '<span class="LC_nobreak">'.$titles{$option}.':'.
                         '<label><input type="radio" name="scantroncsv_'.$option.'" value="1"'.$optionson{$option}.' />'.
                         &mt('Yes').'</label>'.('&nbsp;'x2)."\n".
                         '<label><input type="radio" name="scantroncsv_'.$option.'" value="0"'.$optionsoff{$option}.' />'.&mt('No').'</label></span><br />';
           }
           $datatable .= '</fieldset>';
           $itemcount ++;
        }
    }
    $datatable .= '</td></tr>';
    $$rowtotal ++;
    return $datatable;
}

sub scantronconfig_titles {
    return &Apache::lonlocal::texthash(
                                          dat => 'Standard format (.dat)',
                                          csv => 'Comma separated values (.csv)',
                                          hdr => 'Remove first line in file (contains column titles)',
                                          pad => 'Prepend 0s to PaperID',
                                          rem => 'Remove leading spaces (except Question Response columns)',
                                          CODE => 'CODE',
                                          ID   => 'Student ID',
                                          PaperID => 'Paper ID',
                                          FirstName => 'First Name',
                                          LastName => 'Last Name',
                                          FirstQuestion => 'First Question Response',
                                          Section => 'Section',
    );
}

sub scantroncsv_fields {
    return ('PaperID','LastName','FirstName','ID','Section','CODE','FirstQuestion');
}

sub print_coursecategories {
    my ($position,$dom,$hdritem,$settings,$rowtotal) = @_;
    my $datatable;
    if ($position eq 'top') {
        my (%checked);
        my @catitems = ('unauth','auth');
        my @cattypes = ('std','domonly','codesrch','none');
        $checked{'unauth'} = 'std';
        $checked{'auth'} = 'std';
        if (ref($settings) eq 'HASH') {
            foreach my $type (@cattypes) {
                if ($type eq $settings->{'unauth'}) {
                    $checked{'unauth'} = $type;
                }
                if ($type eq $settings->{'auth'}) {
                    $checked{'auth'} = $type;
                }
            }
        }
        my %lt = &Apache::lonlocal::texthash (
                                               unauth   => 'Catalog type for unauthenticated users',
                                               auth     => 'Catalog type for authenticated users',
                                               none     => 'No catalog',
                                               std      => 'Standard catalog',
                                               domonly  => 'Domain-only catalog',
                                               codesrch => "Code search form",
                                             );
       my $itemcount = 0;
       foreach my $item (@catitems) {
           my $css_class = $itemcount%2? ' class="LC_odd_row"':'';
           $datatable .= '<tr '.$css_class.'>'.
                         '<td>'.$lt{$item}.'</td>'.
                         '<td class="LC_right_item"><span class="LC_nobreak">';
           foreach my $type (@cattypes) {
               my $ischecked;
               if ($checked{$item} eq $type) {
                   $ischecked=' checked="checked"';
               }
               $datatable .= '<label>'.
                             '<input type="radio" name="coursecat_'.$item.'" value="'.$type.'"'.$ischecked.
                             ' />'.$lt{$type}.'</label>&nbsp;';
           }
           $datatable .= '</span></td></tr>';
           $itemcount ++;
        }
        $$rowtotal += $itemcount;
    } elsif ($position eq 'middle') {
        my $toggle_cats_crs = ' ';
        my $toggle_cats_dom = ' checked="checked" ';
        my $can_cat_crs = ' ';
        my $can_cat_dom = ' checked="checked" ';
        my $toggle_catscomm_comm = ' ';
        my $toggle_catscomm_dom = ' checked="checked" ';
        my $can_catcomm_comm = ' ';
        my $can_catcomm_dom = ' checked="checked" ';
        my $toggle_catsplace_place = ' ';
        my $toggle_catsplace_dom = ' checked="checked" ';
        my $can_catplace_place = ' ';
        my $can_catplace_dom = ' checked="checked" ';

        if (ref($settings) eq 'HASH') {
            if ($settings->{'togglecats'} eq 'crs') {
                $toggle_cats_crs = $toggle_cats_dom;
                $toggle_cats_dom = ' ';
            }
            if ($settings->{'categorize'} eq 'crs') {
                $can_cat_crs = $can_cat_dom;
                $can_cat_dom = ' ';
            }
            if ($settings->{'togglecatscomm'} eq 'comm') {
                $toggle_catscomm_comm = $toggle_catscomm_dom;
                $toggle_catscomm_dom = ' ';
            }
            if ($settings->{'categorizecomm'} eq 'comm') {
                $can_catcomm_comm = $can_catcomm_dom;
                $can_catcomm_dom = ' ';
            }
            if ($settings->{'togglecatsplace'} eq 'place') {
                $toggle_catsplace_place = $toggle_catsplace_dom;
                $toggle_catsplace_dom = ' ';
            }
            if ($settings->{'categorizeplace'} eq 'place') {
                $can_catplace_place = $can_catplace_dom;
                $can_catplace_dom = ' ';
            }
        }
        my %title = &Apache::lonlocal::texthash (
                     togglecats      => 'Show/Hide a course in catalog',
                     togglecatscomm  => 'Show/Hide a community in catalog',
                     togglecatsplace => 'Show/Hide a placement test in catalog',
                     categorize      => 'Assign a category to a course',
                     categorizecomm  => 'Assign a category to a community',
                     categorizeplace => 'Assign a category to a placement test',
                    );
        my %level = &Apache::lonlocal::texthash (
                     dom   => 'Set in Domain',
                     crs   => 'Set in Course',
                     comm  => 'Set in Community',
                     place => 'Set in Placement Test',
                    );
        $datatable = '<tr class="LC_odd_row">'.
                  '<td>'.$title{'togglecats'}.'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="togglecats"'.
                  $toggle_cats_dom.' value="dom" />'.$level{'dom'}.'</label>&nbsp;'.
                  '<label><input type="radio" name="togglecats"'.
                  $toggle_cats_crs.' value="crs" />'.$level{'crs'}.'</label></span></td>'.
                  '</tr><tr>'.
                  '<td>'.$title{'categorize'}.'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak">'.
                  '<label><input type="radio" name="categorize"'.
                  $can_cat_dom.' value="dom" />'.$level{'dom'}.'</label>&nbsp;'.
                  '<label><input type="radio" name="categorize"'.
                  $can_cat_crs.'value="crs" />'.$level{'crs'}.'</label></span></td>'.
                  '</tr><tr class="LC_odd_row">'.
                  '<td>'.$title{'togglecatscomm'}.'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="togglecatscomm"'.
                  $toggle_catscomm_dom.' value="dom" />'.$level{'dom'}.'</label>&nbsp;'.
                  '<label><input type="radio" name="togglecatscomm"'.
                  $toggle_catscomm_comm.' value="comm" />'.$level{'comm'}.'</label></span></td>'.
                  '</tr><tr>'.
                  '<td>'.$title{'categorizecomm'}.'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak">'.
                  '<label><input type="radio" name="categorizecomm"'.
                  $can_catcomm_dom.' value="dom" />'.$level{'dom'}.'</label>&nbsp;'.
                  '<label><input type="radio" name="categorizecomm"'.
                  $can_catcomm_comm.'value="comm" />'.$level{'comm'}.'</label></span></td>'.
                  '</tr><tr class="LC_odd_row">'.
                  '<td>'.$title{'togglecatsplace'}.'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                  '<input type="radio" name="togglecatsplace"'.
                  $toggle_catsplace_dom.' value="dom" />'.$level{'dom'}.'</label>&nbsp;'.
                  '<label><input type="radio" name="togglecatscomm"'.
                  $toggle_catsplace_place.' value="comm" />'.$level{'place'}.'</label></span></td>'.
                  '</tr><tr>'.
                  '<td>'.$title{'categorizeplace'}.'</td>'.
                  '<td class="LC_right_item"><span class="LC_nobreak">'.
                  '<label><input type="radio" name="categorizeplace"'.
                  $can_catplace_dom.' value="dom" />'.$level{'dom'}.'</label>&nbsp;'.
                  '<label><input type="radio" name="categorizeplace"'.
                  $can_catplace_place.'value="place" />'.$level{'place'}.'</label></span></td>'.
                  '</tr>';
        $$rowtotal += 6;
    } else {
        my $css_class;
        my $itemcount = 1;
        my $cathash; 
        if (ref($settings) eq 'HASH') {
            $cathash = $settings->{'cats'};
        }
        if (ref($cathash) eq 'HASH') {
            my (@cats,@trails,%allitems,%idx,@jsarray);
            &Apache::loncommon::extract_categories($cathash,\@cats,\@trails,
                                                   \%allitems,\%idx,\@jsarray);
            my $maxdepth = scalar(@cats);
            my $colattrib = '';
            if ($maxdepth > 2) {
                $colattrib = ' colspan="2" ';
            }
            my @path;
            if (@cats > 0) {
                if (ref($cats[0]) eq 'ARRAY') {
                    my $numtop = @{$cats[0]};
                    my $maxnum = $numtop;
                    my %default_names = (
                          instcode    => &mt('Official courses'),
                          communities => &mt('Communities'),
                          placement   => &mt('Placement Tests'),
                    );

                    if ((!grep(/^instcode$/,@{$cats[0]})) || 
                        ($cathash->{'instcode::0'} eq '') ||
                        (!grep(/^communities$/,@{$cats[0]})) || 
                        ($cathash->{'communities::0'} eq '') ||
                        (!grep(/^placement$/,@{$cats[0]})) ||
                        ($cathash->{'placement::0'} eq '')) {
                        $maxnum ++;
                    }
                    my $lastidx;
                    for (my $i=0; $i<$numtop; $i++) {
                        my $parent = $cats[0][$i];
                        $css_class = $itemcount%2?' class="LC_odd_row"':'';
                        my $item = &escape($parent).'::0';
                        my $chgstr = ' onchange="javascript:reorderCats(this.form,'."'','$item','$idx{$item}'".');"';
                        $lastidx = $idx{$item};
                        $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                                      .'<select name="'.$item.'"'.$chgstr.'>';
                        for (my $k=0; $k<=$maxnum; $k++) {
                            my $vpos = $k+1;
                            my $selstr;
                            if ($k == $i) {
                                $selstr = ' selected="selected" ';
                            }
                            $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
                        }
                        $datatable .= '</select></span></td><td>';
                        if ($parent eq 'instcode' || $parent eq 'communities' || $parent eq 'placement') {
                            $datatable .=  '<span class="LC_nobreak">'
                                           .$default_names{$parent}.'</span>';
                            if ($parent eq 'instcode') {
                                $datatable .= '<br /><span class="LC_nobreak">('
                                              .&mt('with institutional codes')
                                              .')</span></td><td'.$colattrib.'>';
                            } else {
                                $datatable .= '<table><tr><td>';
                            }
                            $datatable .= '<span class="LC_nobreak">'
                                          .'<label><input type="radio" name="'
                                          .$parent.'" value="1" checked="checked" />'
                                          .&mt('Display').'</label>';
                            if ($parent eq 'instcode') {
                                $datatable .= '&nbsp;';
                            } else {
                                $datatable .= '</span></td></tr><tr><td>'
                                              .'<span class="LC_nobreak">';
                            }
                            $datatable .= '<label><input type="radio" name="'
                                          .$parent.'" value="0" />'
                                          .&mt('Do not display').'</label></span>';
                            if (($parent eq 'communities') || ($parent eq 'placement')) {
                                $datatable .= '</td></tr></table>';
                            }
                            $datatable .= '</td>';
                        } else {
                            $datatable .= $parent
                                          .'&nbsp;<span class="LC_nobreak"><label>'
                                          .'<input type="checkbox" name="deletecategory" '
                                          .'value="'.$item.'" />'.&mt('Delete').'</label></span></td>';
                        }
                        my $depth = 1;
                        push(@path,$parent);
                        $datatable .= &build_category_rows($itemcount,\@cats,$depth,$parent,\@path,\%idx);
                        pop(@path);
                        $datatable .= '</tr><tr><td colspan="'.$maxdepth.'" class="LC_row_separator"></td></tr>';
                        $itemcount ++;
                    }
                    $css_class = $itemcount%2?' class="LC_odd_row"':'';
                    my $chgstr = ' onchange="javascript:reorderCats(this.form,'."'','addcategory_pos','$lastidx'".');"';
                    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak"><select name="addcategory_pos"'.$chgstr.'>';
                    for (my $k=0; $k<=$maxnum; $k++) {
                        my $vpos = $k+1;
                        my $selstr;
                        if ($k == $numtop) {
                            $selstr = ' selected="selected" ';
                        }
                        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
                    }
                    $datatable .= '</select></span></td><td colspan="2">'.&mt('Add category:').'&nbsp;'
                                  .'<input type="text" size="20" name="addcategory_name" value="" /></td>'
                                  .'</tr>'."\n";
                    $itemcount ++;
                    foreach my $default ('instcode','communities','placement') {
                        if ((!grep(/^\Q$default\E$/,@{$cats[0]})) || ($cathash->{$default.'::0'} eq '')) {
                            $css_class = $itemcount%2?' class="LC_odd_row"':'';
                            my $chgstr = ' onchange="javascript:reorderCats(this.form,'."'','$default"."_pos','$lastidx'".');"';
                            $datatable .= '<tr><td colspan="'.$maxdepth.'" class="LC_row_separator"></td></tr><tr '.$css_class.'><td>'.
                                          '<span class="LC_nobreak"><select name="'.$default.'_pos"'.$chgstr.'>';
                            for (my $k=0; $k<=$maxnum; $k++) {
                                my $vpos = $k+1;
                                my $selstr;
                                if ($k == $maxnum) {
                                    $selstr = ' selected="selected" ';
                                }
                                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
                            }
                            $datatable .= '</select></span></td>'.
                                          '<td><span class="LC_nobreak">'.
                                          $default_names{$default}.'</span>';
                            if ($default eq 'instcode') {
                                $datatable .= '<br /><span class="LC_nobreak">(' 
                                              .&mt('with institutional codes').')</span>';
                            }
                            $datatable .= '</td>'
                                          .'<td><span class="LC_nobreak"><label><input type="radio" name="'.$default.'" value="1" />'
                                          .&mt('Display').'</label>&nbsp;'
                                          .'<label><input type="radio" name="'.$default.'" value="0" checked="checked"/>'
                                          .&mt('Do not display').'</label></span></td></tr>';
                        }
                    }
                }
            } else {
                $datatable .= &initialize_categories($itemcount);
            }
        } else {
            $datatable .= '<tr><td class="LC_right_item">'.$hdritem->{'header'}->[1]->{'col2'}.'</td></tr>'
                          .&initialize_categories($itemcount);
        }
        $$rowtotal += $itemcount;
    }
    return $datatable;
}

sub print_serverstatuses {
    my ($dom,$settings,$rowtotal) = @_;
    my $datatable;
    my @pages = &serverstatus_pages();
    my (%namedaccess,%machineaccess);
    foreach my $type (@pages) {
        $namedaccess{$type} = '';
        $machineaccess{$type}= '';
    }
    if (ref($settings) eq 'HASH') {
        foreach my $type (@pages) {
            if (exists($settings->{$type})) {
                if (ref($settings->{$type}) eq 'HASH') {
                    foreach my $key (keys(%{$settings->{$type}})) {
                        if ($key eq 'namedusers') {
                            $namedaccess{$type} = $settings->{$type}->{$key};
                        } elsif ($key eq 'machines') {
                            $machineaccess{$type} = $settings->{$type}->{$key};
                        }
                    }
                }
            }
        }
    }
    my $titles= &LONCAPA::lonauthcgi::serverstatus_titles();
    my $rownum = 0;
    my $css_class;
    foreach my $type (@pages) {
        $rownum ++;
        $css_class = $rownum%2?' class="LC_odd_row"':'';
        $datatable .= '<tr'.$css_class.'>'.
                      '<td><span class="LC_nobreak">'.
                      $titles->{$type}.'</span></td>'.
                      '<td class="LC_left_item">'.
                      '<input type="text" name="'.$type.'_namedusers" '.
                      'value="'.$namedaccess{$type}.'" size="30" /></td>'.
                      '<td class="LC_right_item">'.
                      '<span class="LC_nobreak">'.
                      '<input type="text" name="'.$type.'_machines" '.
                      'value="'.$machineaccess{$type}.'" size="10" />'.
                      '</span></td></tr>'."\n";
    }
    $$rowtotal += $rownum;
    return $datatable;
}

sub serverstatus_pages {
    return ('userstatus','lonstatus','loncron','server-status','codeversions',
            'checksums','clusterstatus','certstatus','metadata_keywords',
            'metadata_harvest','takeoffline','takeonline','showenv','toggledebug',
            'ping','domconf','uniquecodes','diskusage','coursecatalog');
}

sub defaults_javascript {
    my ($settings) = @_;
    return unless (ref($settings) eq 'HASH');
    if ((ref($settings->{'inststatusorder'}) eq 'ARRAY') && (ref($settings->{'inststatustypes'}) eq 'HASH')) {
        my $maxnum = scalar(@{$settings->{'inststatusorder'}});
        if ($maxnum eq '') {
            $maxnum = 0;
        }
        $maxnum ++;
        my $jstext = '    var inststatuses = Array('."'".join("','",@{$settings->{'inststatusorder'}})."'".');';  
        return <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderTypes(form,caller) {
    var changedVal;
$jstext 
    var newpos = 'addinststatus_pos';
    var current = new Array;
    var maxh = $maxnum;
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    var oldVal;
    if (caller == newpos) {
        changedVal = newitemVal;
    } else {
        var curritem = 'inststatus_pos_'+caller;
        changedVal = form.elements[curritem].options[form.elements[curritem].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    for (var i=0; i<inststatuses.length; i++) {
        if (inststatuses[i] != caller) {
            var elementName = 'inststatus_pos_'+inststatuses[i];
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}

// ]]>
</script>

ENDSCRIPT
    }
    return;
}

sub passwords_javascript {
    my %intalert = &Apache::lonlocal::texthash (
        authcheck => 'Warning: disallowing login for an authenticated user if the stored cost is less than the default will require a password reset by/for the user.',
        authcost => 'Warning: bcrypt encryption cost for internal authentication must be an integer.',
        passmin => 'Warning: minimum password length must be a positive integer greater than 6.',
        passmax => 'Warning: maximum password length must be a positive integer (or blank).',
        passexp => 'Warning: days before password expiration must be a positive integer (or blank).',
        passnum => 'Warning: number of previous passwords to save must be a positive integer (or blank).',
    );
    &js_escape(\%intalert);
    my $defmin = $Apache::lonnet::passwdmin;
    my $intauthjs = <<"ENDSCRIPT";

function warnIntAuth(field) {
    if (field.name == 'intauth_check') {
        if (field.value == '2') {
            alert('$intalert{authcheck}');
        }
    }
    if (field.name == 'intauth_cost') {
        field.value.replace(/\s/g,'');
        if (field.value != '') {
            var regexdigit=/^\\d+\$/;
            if (!regexdigit.test(field.value)) {
                alert('$intalert{authcost}');
            }
        }
    }
    return;
}

function warnIntPass(field) {
    field.value.replace(/^\s+/,'');
    field.value.replace(/\s+\$/,'');
    var regexdigit=/^\\d+\$/;
    if (field.name == 'passwords_min') {
        if (field.value == '') {
            alert('$intalert{passmin}');
            field.value = '$defmin';
        } else {
            if (!regexdigit.test(field.value)) {
                alert('$intalert{passmin}');
                field.value = '$defmin';
            }
            var minval = parseInt(field.value,10);
            if (minval < $defmin) {
                alert('$intalert{passmin}');
                field.value = '$defmin';
            }
        }
    } else {
        if (field.value == '0') {
            field.value = '';
        }
        if (field.value != '') {
            if (field.name == 'passwords_expire') {
                var regexpposnum=/^\\d+(|\\.\\d*)\$/; 
                if (!regexpposnum.test(field.value)) {
                    alert('$intalert{passexp}');
                    field.value = '';
                } else {
                    var expval = parseFloat(field.value);
                    if (expval == 0) {
                        alert('$intalert{passexp}');
                        field.value = '';
                    }
                }
            } else {
                if (!regexdigit.test(field.value)) {
                    if (field.name == 'passwords_max') {
                        alert('$intalert{passmax}');
                    } else {
                        if (field.name == 'passwords_numsaved') {
                            alert('$intalert{passnum}');
                        }
                    }
                    field.value = '';
                }
            }
        }
    }
    return;
}

ENDSCRIPT
    return &Apache::lonhtmlcommon::scripttag($intauthjs);
}

sub coursecategories_javascript {
    my ($settings) = @_;
    my ($output,$jstext,$cathash);
    if (ref($settings) eq 'HASH') {
        $cathash = $settings->{'cats'};
    }
    if (ref($cathash) eq 'HASH') {
        my (@cats,@jsarray,%idx);
        &Apache::loncommon::gather_categories($cathash,\@cats,\%idx,\@jsarray);
        if (@jsarray > 0) {
            $jstext = '    var categories = Array('.scalar(@jsarray).');'."\n";
            for (my $i=0; $i<@jsarray; $i++) {
                if (ref($jsarray[$i]) eq 'ARRAY') {
                    my $catstr = join('","',@{$jsarray[$i]});
                    $jstext .= '    categories['.$i.'] = Array("'.$catstr.'");'."\n";
                }
            }
        }
    } else {
        $jstext  = '    var categories = Array(1);'."\n".
                   '    categories[0] = Array("instcode_pos");'."\n"; 
    }
    my $instcode_reserved = &mt('The name: [_1] is a reserved category.','"instcode"');
    my $communities_reserved = &mt('The name: [_1] is a reserved category.','"communities"');
    my $placement_reserved = &mt('The name: [_1] is a reserved category.','"placement"');
    my $choose_again = "\n".&mt('Please use a different name for the new top level category.'); 
    &js_escape(\$instcode_reserved);
    &js_escape(\$communities_reserved);
    &js_escape(\$placement_reserved);
    &js_escape(\$choose_again);
    $output = <<"ENDSCRIPT";
<script type="text/javascript">
// <![CDATA[
function reorderCats(form,parent,item,idx) {
    var changedVal;
$jstext
    var newpos = 'addcategory_pos';
    if (parent == '') {
        var has_instcode = 0;
        var maxtop = categories[idx].length;
        for (var j=0; j<maxtop; j++) {
            if (categories[idx][j] == 'instcode::0') {
                has_instcode == 1;
            }
        }
        if (has_instcode == 0) {
            categories[idx][maxtop] = 'instcode_pos';
        }
    } else {
        newpos += '_'+parent;
    }
    var maxh = 1 + categories[idx].length;
    var current = new Array;
    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
    if (item == newpos) {
        changedVal = newitemVal;
    } else {
        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
        current[newitemVal] = newpos;
    }
    for (var i=0; i<categories[idx].length; i++) {
        var elementName = categories[idx][i];
        if (elementName != item) {
            if (form.elements[elementName]) {
                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
                current[currVal] = elementName;
            }
        }
    }
    var oldVal;
    for (var j=0; j<maxh; j++) {
        if (current[j] == undefined) {
            oldVal = j;
        }
    }
    if (oldVal < changedVal) {
        for (var k=oldVal+1; k<=changedVal ; k++) {
           var elementName = current[k];
           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
        }
    } else {
        for (var k=changedVal; k<oldVal; k++) {
            var elementName = current[k];
            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
        }
    }
    return;
}

function categoryCheck(form) {
    if (form.elements['addcategory_name'].value == 'instcode') {
        alert('$instcode_reserved\\n$choose_again');
        return false;
    }
    if (form.elements['addcategory_name'].value == 'communities') {
        alert('$communities_reserved\\n$choose_again');
        return false;
    }
    if (form.elements['addcategory_name'].value == 'placement') {
        alert('$placement_reserved\\n$choose_again');
        return false;
    }
    return true;
}

// ]]>
</script>

ENDSCRIPT
    return $output;
}

sub initialize_categories {
    my ($itemcount) = @_;
    my ($datatable,$css_class,$chgstr);
    my %default_names = &Apache::lonlocal::texthash (
                      instcode    => 'Official courses (with institutional codes)',
                      communities => 'Communities',
                      placement   => 'Placement Tests',
                        );
    my %selnum = (
                   instcode    => '0',
                   communities => '1',
                   placement   => '2',
                 );
    my %selected;
    foreach my $default ('instcode','communities','placement') {
        $css_class = $itemcount%2?' class="LC_odd_row"':'';
        $chgstr = ' onchange="javascript:reorderCats(this.form,'."'','$default"."_pos','0'".');"';
        map { $selected{$selnum{$_}} = '' } keys(%selnum);
        $selected{$selnum{$default}} = ' selected="selected"';
        $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                     .'<select name="'.$default.'_pos"'.$chgstr.'>'
                     .'<option value="0"'.$selected{'0'}.'>1</option>'
                     .'<option value="1"'.$selected{'1'}.'>2</option>'
                     .'<option value="2"'.$selected{'2'}.'>3</option>'
                     .'<option value="3">4</option></select>&nbsp;'
                     .$default_names{$default}
                     .'</span></td><td><span class="LC_nobreak">'
                     .'<label><input type="radio" name="'.$default.'" value="1" checked="checked" />'
                     .&mt('Display').'</label>&nbsp;<label>'
                     .'<input type="radio" name="'.$default.'" value="0" />'.&mt('Do not display')
                 .'</label></span></td></tr>';
        $itemcount ++;
    }
    $css_class = $itemcount%2?' class="LC_odd_row"':'';
    $chgstr = ' onchange="javascript:reorderCats(this.form,'."'','addcategory_pos','0'".');"';
    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
                  .'<select name="addcategory_pos"'.$chgstr.'>'
                  .'<option value="0">1</option>'
                  .'<option value="1">2</option>'
                  .'<option value="2">3</option>'
                  .'<option value="3" selected="selected">4</option></select>&nbsp;'
                  .&mt('Add category').'</span></td><td><span class="LC_nobreak">'.&mt('Name:')
                  .'&nbsp;<input type="text" size="20" name="addcategory_name" value="" /></span>'
                  .'</td></tr>';
    return $datatable;
}

sub build_category_rows {
    my ($itemcount,$cats,$depth,$parent,$path,$idx) = @_;
    my ($text,$name,$item,$chgstr);
    if (ref($cats) eq 'ARRAY') {
        my $maxdepth = scalar(@{$cats});
        if (ref($cats->[$depth]) eq 'HASH') {
            if (ref($cats->[$depth]{$parent}) eq 'ARRAY') {
                my $numchildren = @{$cats->[$depth]{$parent}};
                my $css_class = $itemcount%2?' class="LC_odd_row"':'';
                $text .= '<td><table class="LC_data_table">';
                my ($idxnum,$parent_name,$parent_item);
                my $higher = $depth - 1;
                if ($higher == 0) {
                    $parent_name = &escape($parent).'::'.$higher;
                } else {
                    if (ref($path) eq 'ARRAY') {
                        $parent_name = &escape($parent).':'.&escape($path->[-2]).':'.$higher;
                    }
                }
                $parent_item = 'addcategory_pos_'.$parent_name;
                for (my $j=0; $j<=$numchildren; $j++) {
                    if ($j < $numchildren) {
                        $name = $cats->[$depth]{$parent}[$j];
                        $item = &escape($name).':'.&escape($parent).':'.$depth;
                        $idxnum = $idx->{$item};
                    } else {
                        $name = $parent_name;
                        $item = $parent_item;
                    }
                    $chgstr = ' onchange="javascript:reorderCats(this.form,'."'$parent_name','$item','$idxnum'".');"';
                    $text .= '<tr '.$css_class.'><td><span class="LC_nobreak"><select name="'.$item.'"'.$chgstr.'>';
                    for (my $i=0; $i<=$numchildren; $i++) {
                        my $vpos = $i+1;
                        my $selstr;
                        if ($j == $i) {
                            $selstr = ' selected="selected" ';
                        }
                        $text .= '<option value="'.$i.'"'.$selstr.'>'.$vpos.'</option>';
                    }
                    $text .= '</select>&nbsp;';
                    if ($j < $numchildren) {
                        my $deeper = $depth+1;
                        $text .= $name.'&nbsp;'
                                 .'<label><input type="checkbox" name="deletecategory" value="'
                                 .$item.'" />'.&mt('Delete').'</label></span></td><td>';
                        if(ref($path) eq 'ARRAY') {
                            push(@{$path},$name);
                            $text .= &build_category_rows($itemcount,$cats,$deeper,$name,$path,$idx);
                            pop(@{$path});
                        }
                    } else {
                        $text .= &mt('Add subcategory:').'&nbsp;</span><input type="text" size="20" name="addcategory_name_';
                        if ($j == $numchildren) {
                            $text .= $name;
                        } else {
                            $text .= $item;
                        }
                        $text .= '" value="" />';
                    }
                    $text .= '</td></tr>';
                }
                $text .= '</table></td>';
            } else {
                my $higher = $depth-1;
                if ($higher == 0) {
                    $name = &escape($parent).'::'.$higher;
                } else {
                    if (ref($path) eq 'ARRAY') {
                        $name = &escape($parent).':'.&escape($path->[-2]).':'.$higher;
                    }
                }
                my $colspan;
                if ($parent ne 'instcode') {
                    $colspan = $maxdepth - $depth - 1;
                    $text .= '<td colspan="'.$colspan.'">'.&mt('Add subcategory:').'<input type="text" size="20" name="subcat_'.$name.'" value="" /></td>';
                }
            }
        }
    }
    return $text;
}

sub modifiable_userdata_row {
    my ($context,$item,$settings,$numinrow,$rowcount,$usertypes,$fieldsref,$titlesref,
        $rowid,$customcss,$rowstyle,$itemdesc) = @_;
    my ($role,$rolename,$statustype);
    $role = $item;
    if ($context eq 'cancreate') {
        if ($item =~ /^(emailusername)_(.+)$/) {
            $role = $1;
            $statustype = $2;
            if (ref($usertypes) eq 'HASH') {
                if ($usertypes->{$statustype}) {
                    $rolename = &mt('Data provided by [_1]',$usertypes->{$statustype});
                } else {
                    $rolename = &mt('Data provided by user');
                }
            }
        }
    } elsif ($context eq 'selfcreate') {
        if (ref($usertypes) eq 'HASH') {
            $rolename = $usertypes->{$role};
        } else {
            $rolename = $role;
        }
    } elsif ($context eq 'lti') {
        $rolename = &mt('Institutional data used (if available)');
    } elsif ($context eq 'privacy') {
        $rolename = $itemdesc;
    } else {
        if ($role eq 'cr') {
            $rolename = &mt('Custom role');
        } else {
            $rolename = &Apache::lonnet::plaintext($role);
        }
    }
    my (@fields,%fieldtitles);
    if (ref($fieldsref) eq 'ARRAY') {
        @fields = @{$fieldsref};
    } else {
        @fields = ('lastname','firstname','middlename','generation',
                   'permanentemail','id');
    }
    if ((ref($titlesref) eq 'HASH')) {
        %fieldtitles = %{$titlesref};
    } else {
        %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
    }
    my $output;
    my $css_class;
    if ($rowcount%2) {
        $css_class = 'LC_odd_row';
    }
    if ($customcss) {
        $css_class .= " $customcss";
    }
    $css_class =~ s/^\s+//;
    if ($css_class) {
        $css_class = ' class="'.$css_class.'"';
    }
    if ($rowstyle) {
        $css_class .= ' style="'.$rowstyle.'"';
    }
    if ($rowid) {
        $rowid = ' id="'.$rowid.'"';
    }
    $output = '<tr '.$css_class.$rowid.'>'.
              '<td><span class="LC_nobreak">'.$rolename.'</span></td>'.
              '<td class="LC_left_item" colspan="2"><table>';
    my $rem;
    my %checks;
    my %current;
    if (ref($settings) eq 'HASH') {
        my $hashref;
        if ($context eq 'lti') {
            if (ref($settings) eq 'HASH') {
                $hashref = $settings->{'instdata'};
            }
        } elsif ($context eq 'privacy') {
            my ($key,$inner) = split(/_/,$role);
            if (ref($settings) eq 'HASH') {
                if (ref($settings->{$key}) eq 'HASH') {
                    $hashref = $settings->{$key}->{$inner};
                }
            }
        } elsif (ref($settings->{$context}) eq 'HASH') {
            if (ref($settings->{$context}->{$role}) eq 'HASH') {
                $hashref = $settings->{'lti_instdata'};
            }
            if ($role eq 'emailusername') {
                if ($statustype) {
                    if (ref($settings->{$context}->{$role}->{$statustype}) eq 'HASH') {
                        $hashref = $settings->{$context}->{$role}->{$statustype};
                    }
                }
            }
        }
        if (ref($hashref) eq 'HASH') { 
            foreach my $field (@fields) {
                if ($hashref->{$field}) {
                    if ($role eq 'emailusername') {
                        $checks{$field} = $hashref->{$field};
                    } else {
                        $checks{$field} = ' checked="checked" ';
                    }
                }
            }
        }
    }
 
    my $total = scalar(@fields);
    for (my $i=0; $i<$total; $i++) {
        $rem = $i%($numinrow);
        if ($rem == 0) {
            if ($i > 0) {
                $output .= '</tr>';
            }
            $output .= '<tr>';
        }
        my $check = ' ';
        unless ($role eq 'emailusername') {
            if (exists($checks{$fields[$i]})) {
                $check = $checks{$fields[$i]};
            } elsif ($context eq 'privacy') {
                if ($role =~ /^priv_(domain|course)$/) {
                    if (ref($settings) ne 'HASH') {
                        $check = ' checked="checked" ';
                    }
                } elsif ($role =~ /^priv_(author|community)$/) {
                    if (ref($settings) ne 'HASH') {
                        unless ($fields[$i] eq 'id') {
                            $check = ' checked="checked" ';
                        }
                    }
                } elsif ($role =~ /^(unpriv|othdom)_/) {
                    if (ref($settings) ne 'HASH') {
                        if (($fields[$i] eq 'lastname') || ($fields[$i] eq 'firstname')) {
                            $check = ' checked="checked" ';
                        }
                    }
                }
            } elsif ($context ne 'lti') {
                if ($role eq 'st') {
                    if (ref($settings) ne 'HASH') {
                        $check = ' checked="checked" '; 
                    }
                }
            }
        }
        $output .= '<td class="LC_left_item">'.
                   '<span class="LC_nobreak">';
        my $prefix = 'canmodify';
        if ($role eq 'emailusername') {
            unless ($checks{$fields[$i]} =~ /^(required|optional)$/) {
                $checks{$fields[$i]} = 'omit';
            }
            foreach my $option ('required','optional','omit') {
                my $checked='';
                if ($checks{$fields[$i]} eq $option) {
                    $checked='checked="checked" ';
                }
                $output .= '<label>'.
                           '<input type="radio" name="'.$prefix.'_'.$item.'_'.$fields[$i].'" value="'.$option.'" '.$checked.'/>'.
                           &mt($option).'</label>'.('&nbsp;' x2);
            }
            $output .= '<i>'.$fieldtitles{$fields[$i]}.'</i>';
        } else {
            if ($context eq 'lti') {
                $prefix = 'lti';
            } elsif ($context eq 'privacy') {
                $prefix = 'privacy';
            }
            $output .= '<label>'.
                       '<input type="checkbox" name="'.$prefix.'_'.$role.'" '.
                       'value="'.$fields[$i].'"'.$check.'/>'.$fieldtitles{$fields[$i]}.
                       '</label>';
        }
        $output .= '</span></td>';
    }
    $rem = $total%$numinrow;
    my $colsleft;
    if ($rem) {
        $colsleft = $numinrow - $rem;
    }
    if ($colsleft > 1) {
        $output .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
                   '&nbsp;</td>';
    } elsif ($colsleft == 1) {
        $output .= '<td class="LC_left_item">&nbsp;</td>';
    }
    $output .= '</tr></table></td></tr>';
    return $output;
}

sub insttypes_row {
    my ($settings,$types,$usertypes,$dom,$numinrow,$othertitle,$context,$rowtotal,$onclick,
        $customcss,$rowstyle) = @_;
    my %lt = &Apache::lonlocal::texthash (
                      cansearch => 'Users allowed to search',
                      statustocreate => 'Institutional affiliation(s) able to create own account (login/SSO)',
                      lockablenames => 'User preference to lock name',
                      selfassign    => 'Self-reportable affiliations',
                      overrides     => "Override domain's helpdesk settings based on requester's affiliation",
             );
    my $showdom;
    if ($context eq 'cansearch') {
        $showdom = ' ('.$dom.')';
    }
    my $class = 'LC_left_item';
    if ($context eq 'statustocreate') {
        $class = 'LC_right_item';
    }
    my $css_class;
    if ($$rowtotal%2) {
        $css_class = 'LC_odd_row';
    }
    if ($customcss) {
        $css_class .= ' '.$customcss;
    }
    $css_class =~ s/^\s+//;
    if ($css_class) {
        $css_class = ' class="'.$css_class.'"';
    }
    if ($rowstyle) {
        $css_class .= ' style="'.$rowstyle.'"';
    }
    if ($onclick) {
        $onclick = 'onclick="'.$onclick.'" ';
    }
    my $output = '<tr'.$css_class.'>'.
                 '<td>'.$lt{$context}.$showdom.
                 '</td><td class="'.$class.'" colspan="2"><table>';
    my $rem;
    if (ref($types) eq 'ARRAY') {
        for (my $i=0; $i<@{$types}; $i++) {
            if (defined($usertypes->{$types->[$i]})) {
                my $rem = $i%($numinrow);
                if ($rem == 0) {
                    if ($i > 0) {
                        $output .= '</tr>';
                    }
                    $output .= '<tr>';
                }
                my $check = ' ';
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{$context}) eq 'ARRAY') {
                        if (grep(/^\Q$types->[$i]\E$/,@{$settings->{$context}})) {
                            $check = ' checked="checked" ';
                        }
                    } elsif (ref($settings->{$context}) eq 'HASH') {
                        if (ref($settings->{$context}->{$types->[$i]}) eq 'HASH') {
                            $check = ' checked="checked" ';
                        }
                    } elsif ($context eq 'statustocreate') {
                        $check = ' checked="checked" ';
                    }
                }
                $output .= '<td class="LC_left_item">'.
                           '<span class="LC_nobreak"><label>'.
                           '<input type="checkbox" name="'.$context.'" '.
                           'value="'.$types->[$i].'"'.$check.$onclick.' />'.
                           $usertypes->{$types->[$i]}.'</label></span></td>';
            }
        }
        $rem = @{$types}%($numinrow);
    }
    my $colsleft = $numinrow - $rem;
    if ($context eq 'overrides') {
        if ($colsleft > 1) {
            $output .= '<td colspan="'.$colsleft.'" class="LC_left_item">';
        } else {
            $output .= '<td class="LC_left_item">';
        }
        $output .= '&nbsp;';  
    } else {
        if ($rem == 0) {
            $output .= '<tr>';
        }
        if ($colsleft > 1) {
            $output .= '<td colspan="'.$colsleft.'" class="LC_left_item">';
        } else {
            $output .= '<td class="LC_left_item">';
        }
        my $defcheck = ' ';
        if (ref($settings) eq 'HASH') {  
            if (ref($settings->{$context}) eq 'ARRAY') {
                if (grep(/^default$/,@{$settings->{$context}})) {
                    $defcheck = ' checked="checked" ';
                }
            } elsif ($context eq 'statustocreate') {
                $defcheck = ' checked="checked" ';
            }
        }
        $output .= '<span class="LC_nobreak"><label>'.
                   '<input type="checkbox" name="'.$context.'" '.
                   'value="default"'.$defcheck.$onclick.' />'.
                   $othertitle.'</label></span>';
    }
    $output .= '</td></tr></table></td></tr>';
    return $output;
}

sub sorted_searchtitles {
    my %searchtitles = &Apache::lonlocal::texthash(
                         'uname' => 'username',
                         'lastname' => 'last name',
                         'lastfirst' => 'last name, first name',
                     );
    my @titleorder = ('uname','lastname','lastfirst');
    return (\%searchtitles,\@titleorder);
}

sub sorted_searchtypes {
    my %srchtypes_desc = (
                           exact    => 'is exact match',
                           contains => 'contains ..',
                           begins   => 'begins with ..',
                         );
    my @srchtypeorder = ('exact','begins','contains');
    return (\%srchtypes_desc,\@srchtypeorder);
}

sub usertype_update_row {
    my ($settings,$usertypes,$fieldtitles,$fields,$types,$rownums) = @_;
    my $datatable;
    my $numinrow = 4;
    foreach my $type (@{$types}) {
        if (defined($usertypes->{$type})) {
            $$rownums ++;
            my $css_class = $$rownums%2?' class="LC_odd_row"':'';
            $datatable .= '<tr'.$css_class.'><td>'.$usertypes->{$type}.
                          '</td><td class="LC_left_item"><table>';
            for (my $i=0; $i<@{$fields}; $i++) {
                my $rem = $i%($numinrow);
                if ($rem == 0) {
                    if ($i > 0) {
                        $datatable .= '</tr>';
                    }
                    $datatable .= '<tr>';
                }
                my $check = ' ';
                if (ref($settings) eq 'HASH') {
                    if (ref($settings->{'fields'}) eq 'HASH') {
                        if (ref($settings->{'fields'}{$type}) eq 'ARRAY') {
                            if (grep(/^\Q$fields->[$i]\E$/,@{$settings->{'fields'}{$type}})) {
                                $check = ' checked="checked" ';
                            }
                        }
                    }
                }

                if ($i == @{$fields}-1) {
                    my $colsleft = $numinrow - $rem;
                    if ($colsleft > 1) {
                        $datatable .= '<td colspan="'.$colsleft.'">';
                    } else {
                        $datatable .= '<td>';
                    }
                } else {
                    $datatable .= '<td>';
                }
                $datatable .= '<span class="LC_nobreak"><label>'.
                              '<input type="checkbox" name="updateable_'.$type.
                              '_'.$fields->[$i].'" value="1"'.$check.'/>'.
                              $fieldtitles->{$fields->[$i]}.'</label></span></td>';
            }
            $datatable .= '</tr></table></td></tr>';
        }
    }
    return $datatable;
}

sub modify_login {
    my ($r,$dom,$confname,$lastactref,%domconfig) = @_;
    my ($resulttext,$errors,$colchgtext,%changes,%colchanges,%newfile,%newurl,
        %curr_loginvia,%loginhash,@currlangs,@newlangs,$addedfile,%title,@offon,
        %currsaml,%saml,%samltext,%samlimg,%samlalt,%samlurl,%samltitle,%samlnotsso);
    %title = ( coursecatalog => 'Display course catalog',
               adminmail => 'Display administrator E-mail address',
               helpdesk  => 'Display "Contact Helpdesk" link',
               newuser => 'Link for visitors to create a user account',
               loginheader => 'Log-in box header',
               saml => 'Dual SSO and non-SSO login');
    @offon = ('off','on');
    if (ref($domconfig{login}) eq 'HASH') {
        if (ref($domconfig{login}{loginvia}) eq 'HASH') {
            foreach my $lonhost (keys(%{$domconfig{login}{loginvia}})) {
                $curr_loginvia{$lonhost} = $domconfig{login}{loginvia}{$lonhost};
            }
        }
        if (ref($domconfig{login}{'saml'}) eq 'HASH') {
            foreach my $lonhost (keys(%{$domconfig{login}{'saml'}})) {
                if (ref($domconfig{login}{'saml'}{$lonhost}) eq 'HASH') {
                    $currsaml{$lonhost} = $domconfig{login}{'saml'}{$lonhost};
                    $saml{$lonhost} = 1;
                    $samltext{$lonhost} = $domconfig{login}{'saml'}{$lonhost}{'text'};
                    $samlurl{$lonhost} = $domconfig{login}{'saml'}{$lonhost}{'url'};
                    $samlalt{$lonhost} = $domconfig{login}{'saml'}{$lonhost}{'alt'};
                    $samlimg{$lonhost} = $domconfig{login}{'saml'}{$lonhost}{'img'};
                    $samltitle{$lonhost} = $domconfig{login}{'saml'}{$lonhost}{'title'};
                    $samlnotsso{$lonhost} = $domconfig{login}{'saml'}{$lonhost}{'notsso'};
                }
            }
        }
    }
    ($errors,%colchanges) = &modify_colors($r,$dom,$confname,['login'],
                                           \%domconfig,\%loginhash);
    my @toggles = ('coursecatalog','adminmail','helpdesk','newuser');
    foreach my $item (@toggles) {
        $loginhash{login}{$item} = $env{'form.'.$item};
    }
    $loginhash{login}{loginheader} = $env{'form.loginheader'};
    if (ref($colchanges{'login'}) eq 'HASH') {  
        $colchgtext = &display_colorchgs($dom,\%colchanges,['login'],
                                         \%loginhash);
    }

    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my %domservers = &Apache::lonnet::get_servers($dom);
    my @loginvia_attribs = ('serverpath','custompath','exempt');
    if (keys(%servers) > 1) {
        foreach my $lonhost (keys(%servers)) {
            next if ($env{'form.'.$lonhost.'_server'} eq $lonhost);
            if (ref($curr_loginvia{$lonhost}) eq 'HASH') {
                if ($env{'form.'.$lonhost.'_server'} eq $curr_loginvia{$lonhost}{'server'}) {
                    $loginhash{login}{loginvia}{$lonhost}{'server'} = $curr_loginvia{$lonhost}{'server'};
                } elsif ($curr_loginvia{$lonhost}{'server'} ne '') {
                    if (defined($servers{$env{'form.'.$lonhost.'_server'}})) {
                        $loginhash{login}{loginvia}{$lonhost}{'server'} = $env{'form.'.$lonhost.'_server'};
                        $changes{'loginvia'}{$lonhost} = 1;
                    } else {
                        $loginhash{login}{loginvia}{$lonhost}{'server'} = '';
                        $changes{'loginvia'}{$lonhost} = 1;
                    }
                } else {
                    if (defined($servers{$env{'form.'.$lonhost.'_server'}})) {
                        $loginhash{login}{loginvia}{$lonhost}{'server'} = $env{'form.'.$lonhost.'_server'};
                        $changes{'loginvia'}{$lonhost} = 1;
                    }
                }
                if ($loginhash{login}{loginvia}{$lonhost}{'server'} eq '') {
                    foreach my $item (@loginvia_attribs) {
                        $loginhash{login}{loginvia}{$lonhost}{$item} = '';
                    }
                } else {
                    foreach my $item (@loginvia_attribs) {
                        my $new = $env{'form.'.$lonhost.'_'.$item};
                        if (($item eq 'serverpath') && ($new eq 'custom')) {
                            $env{'form.'.$lonhost.'_custompath'} =~ s/\s+//g;
                            if ($env{'form.'.$lonhost.'_custompath'} eq '') {
                                $new = '/';
                            }
                        }
                        if (($item eq 'custompath') && 
                            ($env{'form.'.$lonhost.'_serverpath'} ne 'custom')) {
                            $new = '';
                        }
                        if ($new ne $curr_loginvia{$lonhost}{$item}) {
                            $changes{'loginvia'}{$lonhost} = 1;
                        }
                        if ($item eq 'exempt') {
                            $new = &check_exempt_addresses($new);
                        }
                        $loginhash{login}{loginvia}{$lonhost}{$item} = $new;
                    }
                }
            } else {
                if (defined($servers{$env{'form.'.$lonhost.'_server'}})) {
                    $loginhash{login}{loginvia}{$lonhost}{'server'} = $env{'form.'.$lonhost.'_server'};
                    $changes{'loginvia'}{$lonhost} = 1;
                    foreach my $item (@loginvia_attribs) {
                        my $new = $env{'form.'.$lonhost.'_'.$item};
                        if (($item eq 'serverpath') && ($new eq 'custom')) {
                            if ($env{'form.'.$lonhost.'_custompath'} eq '') {
                                $new = '/';
                            }
                        }
                        if (($item eq 'custompath') && 
                            ($env{'form.'.$lonhost.'_serverpath'} ne 'custom')) {
                            $new = '';
                        }
                        $loginhash{login}{loginvia}{$lonhost}{$item} = $new;
                    }
                }
            }
        }
    }

    my $servadm = $r->dir_config('lonAdmEMail');
    my %langchoices = &Apache::lonlocal::texthash(&get_languages_hash());
    if (ref($domconfig{'login'}) eq 'HASH') {
        if (ref($domconfig{'login'}{'helpurl'}) eq 'HASH') {
            foreach my $lang (sort(keys(%{$domconfig{'login'}{'helpurl'}}))) {
                if ($lang eq 'nolang') {
                    push(@currlangs,$lang);
                } elsif (defined($langchoices{$lang})) {
                    push(@currlangs,$lang);
                } else {
                    next;
                }
            }
        }
    }
    my @delurls = &Apache::loncommon::get_env_multiple('form.loginhelpurl_del');
    if (@currlangs > 0) {
        foreach my $lang (@currlangs) {
            if (grep(/^\Q$lang\E$/,@delurls)) {
                $changes{'helpurl'}{$lang} = 1;
            } elsif ($env{'form.loginhelpurl_'.$lang.'.filename'}) {
                $changes{'helpurl'}{$lang} = 1;
                $newfile{$lang} = $env{'form.loginhelpurl_'.$lang.'.filename'};
                push(@newlangs,$lang);
            } else {
                $loginhash{'login'}{'helpurl'}{$lang} = $domconfig{'login'}{'helpurl'}{$lang};
            }
        }
    }
    unless (grep(/^nolang$/,@currlangs)) {
        if ($env{'form.loginhelpurl_nolang.filename'}) {
            $changes{'helpurl'}{'nolang'} = 1;
            $newfile{'nolang'} = $env{'form.loginhelpurl_nolang.filename'};
            push(@newlangs,'nolang');
        }
    }
    if ($env{'form.loginhelpurl_add_lang'}) {
        if ((defined($langchoices{$env{'form.loginhelpurl_add_lang'}})) &&
            ($env{'form.loginhelpurl_add_file.filename'})) {
            $newfile{$env{'form.loginhelpurl_add_lang'}} = $env{'form.loginhelpurl_add_file.filename'};
            $addedfile = $env{'form.loginhelpurl_add_lang'};
        }
    }
    if ((@newlangs > 0) || ($addedfile)) {
        my $error;
        my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
        if ($configuserok eq 'ok') {
            if ($switchserver) {
                $error = &mt("Upload of custom help file is not permitted to this server: [_1]",$switchserver);
            } elsif ($author_ok eq 'ok') {
                my @allnew = @newlangs;
                if ($addedfile ne '') {
                    push(@allnew,$addedfile);
                }
                foreach my $lang (@allnew) {
                    my $formelem = 'loginhelpurl_'.$lang;
                    if ($lang eq $env{'form.loginhelpurl_add_lang'}) {
                        $formelem = 'loginhelpurl_add_file';
                    }
                    (my $result,$newurl{$lang}) = &publishlogo($r,'upload',$formelem,$dom,$confname,
                                                               "help/$lang",'','',$newfile{$lang});
                    if ($result eq 'ok') {
                        $loginhash{'login'}{'helpurl'}{$lang} = $newurl{$lang};
                        $changes{'helpurl'}{$lang} = 1;
                    } else {
                        my $puberror = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$newfile{$lang},$result);
                        $errors .= '<li><span class="LC_error">'.$puberror.'</span></li>';
                        if ((grep(/^\Q$lang\E$/,@currlangs)) &&
                            (!grep(/^\Q$lang\E$/,@delurls))) {
                            $loginhash{'login'}{'helpurl'}{$lang} = $domconfig{'login'}{'helpurl'}{$lang};
                        }
                    }
                }
            } else {
                $error = &mt("Upload of custom log-in help file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
            }
        } else {
            $error = &mt("Upload of custom log-in help file(s) failed because a Domain Configuration user ([_1]) could not be created in domain: [_2].  Error was: [_3].",$confname,$dom,$configuserok);
        }
        if ($error) {
            &Apache::lonnet::logthis($error);
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }

    my (%currheadtagurls,%currexempt,@newhosts,%newheadtagurls,%possexempt);
    if (ref($domconfig{'login'}) eq 'HASH') {
        if (ref($domconfig{'login'}{'headtag'}) eq 'HASH') {
            foreach my $lonhost (keys(%{$domconfig{'login'}{'headtag'}})) {
                if ($domservers{$lonhost}) {
                    if (ref($domconfig{'login'}{'headtag'}{$lonhost}) eq 'HASH') {
                        $currheadtagurls{$lonhost} = $domconfig{'login'}{'headtag'}{$lonhost}{'url'};
                        $currexempt{$lonhost} = $domconfig{'login'}{'headtag'}{$lonhost}{'exempt'};
                    }
                }
            }
        }
    }
    my @delheadtagurls = &Apache::loncommon::get_env_multiple('form.loginheadtag_del');
    foreach my $lonhost (sort(keys(%domservers))) {
        if (grep(/^\Q$lonhost\E$/,@delheadtagurls)) {
            $changes{'headtag'}{$lonhost} = 1;
        } else {
            if ($env{'form.loginheadtagexempt_'.$lonhost}) {
                $possexempt{$lonhost} = &check_exempt_addresses($env{'form.loginheadtagexempt_'.$lonhost});
            }
            if ($env{'form.loginheadtag_'.$lonhost.'.filename'}) {
                push(@newhosts,$lonhost);
            } elsif ($currheadtagurls{$lonhost}) {
                $loginhash{'login'}{'headtag'}{$lonhost}{'url'} = $currheadtagurls{$lonhost};
                if ($currexempt{$lonhost}) {
                    if ((!exists($possexempt{$lonhost})) || ($possexempt{$lonhost} ne $currexempt{$lonhost})) {
                        $changes{'headtag'}{$lonhost} = 1;
                    }
                } elsif ($possexempt{$lonhost}) {
                    $changes{'headtag'}{$lonhost} = 1;
                }
                if ($possexempt{$lonhost}) {
                    $loginhash{'login'}{'headtag'}{$lonhost}{'exempt'} = $possexempt{$lonhost};
                }
            }
        }
    }
    if (@newhosts) {
        my $error;
        my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
        if ($configuserok eq 'ok') {
            if ($switchserver) {
                $error = &mt("Upload of custom markup is not permitted to this server: [_1]",$switchserver);
            } elsif ($author_ok eq 'ok') {
                foreach my $lonhost (@newhosts) {
                    my $formelem = 'loginheadtag_'.$lonhost;
                    (my $result,$newheadtagurls{$lonhost}) = &publishlogo($r,'upload',$formelem,$dom,$confname,
                                                                          "login/headtag/$lonhost",'','',
                                                                          $env{'form.loginheadtag_'.$lonhost.'.filename'});
                    if ($result eq 'ok') {
                        $loginhash{'login'}{'headtag'}{$lonhost}{'url'} = $newheadtagurls{$lonhost};
                        $changes{'headtag'}{$lonhost} = 1;
                        if ($possexempt{$lonhost}) {
                            $loginhash{'login'}{'headtag'}{$lonhost}{'exempt'} = $possexempt{$lonhost};
                        }
                    } else {
                        my $puberror = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",
                                           $newheadtagurls{$lonhost},$result);
                        $errors .= '<li><span class="LC_error">'.$puberror.'</span></li>';
                        if ((grep(/^\Q$lonhost\E$/,keys(%currheadtagurls))) &&
                            (!grep(/^\Q$lonhost\E$/,@delheadtagurls))) {
                            $loginhash{'login'}{'headtag'}{$lonhost} = $currheadtagurls{$lonhost};
                        }
                    }
                }
            } else {
                $error = &mt("Upload of custom markup file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
            }
        } else {
            $error = &mt("Upload of custom markup file(s) failed because a Domain Configuration user ([_1]) could not be created in domain: [_2].  Error was: [_3].",$confname,$dom,$configuserok);
        }
        if ($error) {
            &Apache::lonnet::logthis($error);
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }
    my @delsamlimg = &Apache::loncommon::get_env_multiple('form.saml_img_del');
    my @newsamlimgs;
    foreach my $lonhost (keys(%domservers)) {
        if ($env{'form.saml_'.$lonhost}) {
            if ($env{'form.saml_img_'.$lonhost.'.filename'}) {
                push(@newsamlimgs,$lonhost);
            }
            foreach my $item ('text','alt','url','title','notsso') {
                $env{'form.saml_'.$item.'_'.$lonhost} =~ s/^\s+|\s+$//g;
            }
            if ($saml{$lonhost}) {
                if (grep(/^\Q$lonhost\E$/,@delsamlimg)) {
#FIXME Need to obsolete published image
                    delete($currsaml{$lonhost}{'img'});
                    $changes{'saml'}{$lonhost} = 1;
                }
                if ($env{'form.saml_alt_'.$lonhost} ne $samlalt{$lonhost}) {
                    $changes{'saml'}{$lonhost} = 1;
                }
                if ($env{'form.saml_text_'.$lonhost} ne $samltext{$lonhost}) {
                    $changes{'saml'}{$lonhost} = 1;
                }
                if ($env{'form.saml_url_'.$lonhost} ne $samlurl{$lonhost}) {
                    $changes{'saml'}{$lonhost} = 1;
                }
                if ($env{'form.saml_title_'.$lonhost} ne $samltitle{$lonhost}) {
                    $changes{'saml'}{$lonhost} = 1;
                }
                if ($env{'form.saml_notsso_'.$lonhost} ne $samlnotsso{$lonhost}) {
                    $changes{'saml'}{$lonhost} = 1;
                }
            } else {
                $changes{'saml'}{$lonhost} = 1;
            }
            foreach my $item ('text','alt','url','title','notsso') {
                $currsaml{$lonhost}{$item} = $env{'form.saml_'.$item.'_'.$lonhost};
            }
        } else {
            if ($saml{$lonhost}) {  
                $changes{'saml'}{$lonhost} = 1;
                delete($currsaml{$lonhost});
            }
        }
    }
    foreach my $posshost (keys(%currsaml)) {
        unless (exists($domservers{$posshost})) { 
            delete($currsaml{$posshost}); 
        }
    }
    %{$loginhash{'login'}{'saml'}} = %currsaml;
    if (@newsamlimgs) {
        my $error;
        my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
        if ($configuserok eq 'ok') {
            if ($switchserver) {
                $error = &mt("Upload of SSO Button Image is not permitted to this server: [_1].",$switchserver);
            } elsif ($author_ok eq 'ok') {
                foreach my $lonhost (@newsamlimgs) {
                    my $formelem = 'saml_img_'.$lonhost;
                    my ($result,$imgurl) = &publishlogo($r,'upload',$formelem,$dom,$confname,
                                                        "login/saml/$lonhost",'','',
                                                        $env{'form.saml_img_'.$lonhost.'.filename'});
                    if ($result eq 'ok') {
                        $currsaml{$lonhost}{'img'} = $imgurl;
                        $loginhash{'login'}{'saml'}{$lonhost}{'img'} = $imgurl;
                        $changes{'saml'}{$lonhost} = 1;
                    } else {
                        my $puberror = &mt("Upload of SSO button image failed for [_1] because an error occurred publishing the file in RES space. Error was: [_2].",
                                           $lonhost,$result);
                        $errors .= '<li><span class="LC_error">'.$puberror.'</span></li>';
                    }
                }
            } else {
                $error = &mt("Upload of SSO button image file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
            }
        } else {
            $error = &mt("Upload of SSO button image file(s) failed because a Domain Configuration user ([_1]) could not be created in domain: [_2].  Error was: [_3].",$confname,$dom,$configuserok);
        }
        if ($error) {
            &Apache::lonnet::logthis($error);
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }
    &process_captcha('login',\%changes,$loginhash{'login'},$domconfig{'login'});

    my $defaulthelpfile = '/adm/loginproblems.html';
    my $defaulttext = &mt('Default in use');

    my $putresult = &Apache::lonnet::put_dom('configuration',\%loginhash,
                                             $dom);
    if ($putresult eq 'ok') {
        my @toggles = ('coursecatalog','adminmail','helpdesk','newuser');
        my %defaultchecked = (
                    'coursecatalog' => 'on',
                    'helpdesk'      => 'on',
                    'adminmail'     => 'off',
                    'newuser'       => 'off',
        );
        if (ref($domconfig{'login'}) eq 'HASH') {
            foreach my $item (@toggles) {
                if ($defaultchecked{$item} eq 'on') { 
                    if (($domconfig{'login'}{$item} eq '0') &&
                        ($env{'form.'.$item} eq '1')) {
                        $changes{$item} = 1;
                    } elsif (($domconfig{'login'}{$item} eq '' ||
                              $domconfig{'login'}{$item} eq '1') &&
                             ($env{'form.'.$item} eq '0')) {
                        $changes{$item} = 1;
                    }
                } elsif ($defaultchecked{$item} eq 'off') {
                    if (($domconfig{'login'}{$item} eq '1') &&
                        ($env{'form.'.$item} eq '0')) {
                        $changes{$item} = 1;
                    } elsif (($domconfig{'login'}{$item} eq '' ||
                              $domconfig{'login'}{$item} eq '0') &&
                             ($env{'form.'.$item} eq '1')) {
                        $changes{$item} = 1;
                    }
                }
            }
        }
        if (keys(%changes) > 0 || $colchgtext) {
            &Apache::loncommon::devalidate_domconfig_cache($dom);
            if (exists($changes{'saml'})) {
                my $hostid_in_use;
                my @hosts = &Apache::lonnet::current_machine_ids();
                if (@hosts > 1) {
                    foreach my $hostid (@hosts) {
                        if (&Apache::lonnet::host_domain($hostid) eq $dom) {
                            $hostid_in_use = $hostid;
                            last;
                        }
                    }
                } else {
                    $hostid_in_use = $r->dir_config('lonHostID');
                }
                if (($hostid_in_use) &&
                    (&Apache::lonnet::host_domain($hostid_in_use) eq $dom)) {
                    &Apache::lonnet::devalidate_cache_new('samllanding',$hostid_in_use);
                }
                if (ref($lastactref) eq 'HASH') {
                    if (ref($changes{'saml'}) eq 'HASH') {
                        my %updates;
                        map { $updates{$_} = 1; } keys(%{$changes{'saml'}});
                        $lastactref->{'samllanding'} = \%updates;
                    }
                }
            }
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domainconfig'} = 1;
            }
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $item (sort(keys(%changes))) {
                if ($item eq 'loginvia') {
                    if (ref($changes{$item}) eq 'HASH') {
                        $resulttext .= '<li>'.&mt('Log-in page availability:').'<ul>';
                        foreach my $lonhost (sort(keys(%{$changes{$item}}))) {
                            if (defined($servers{$loginhash{login}{loginvia}{$lonhost}{'server'}})) {
                                if (ref($loginhash{login}{loginvia}{$lonhost}) eq 'HASH') {
                                    my $protocol = $Apache::lonnet::protocol{$env{'form.'.$lonhost.'_server'}};
                                    $protocol = 'http' if ($protocol ne 'https');
                                    my $target = $protocol.'://'.$servers{$env{'form.'.$lonhost.'_server'}};

                                    if ($loginhash{login}{loginvia}{$lonhost}{'serverpath'} eq 'custom') {
                                        $target .= $loginhash{login}{loginvia}{$lonhost}{'custompath'};
                                    } else {
                                        $target .= $loginhash{login}{loginvia}{$lonhost}{'serverpath'}; 
                                    }
                                    $resulttext .= '<li>'.&mt('Server: [_1] log-in page redirects to [_2].',$servers{$lonhost},'<a href="'.$target.'">'.$target.'</a>');
                                    if ($loginhash{login}{loginvia}{$lonhost}{'exempt'} ne '') {
                                        $resulttext .= '&nbsp;'.&mt('No redirection for clients from following IPs:').'&nbsp;'.$loginhash{login}{loginvia}{$lonhost}{'exempt'};
                                    }
                                    $resulttext .= '</li>';
                                } else {
                                    $resulttext .= '<li>'.&mt('Server: [_1] has standard log-in page.',$lonhost).'</li>';
                                }
                            } else {
                                $resulttext .= '<li>'.&mt('Server: [_1] has standard log-in page.',$servers{$lonhost}).'</li>';
                            }
                        }
                        $resulttext .= '</ul></li>';
                    }
                } elsif ($item eq 'helpurl') {
                    if (ref($changes{$item}) eq 'HASH') {
                        foreach my $lang (sort(keys(%{$changes{$item}}))) {
                            if (grep(/^\Q$lang\E$/,@delurls)) {
                                my ($chg,$link);
                                $link = &Apache::loncommon::modal_link($defaulthelpfile,$defaulttext,600,500);
                                if ($lang eq 'nolang') {
                                    $chg = &mt('custom log-in help file removed for no preferred language; [_1]',$link);
                                } else {
                                    $chg = &mt('custom log-in help file removed for specific language: [_1]; [_2]',$langchoices{$lang},$link);
                                }
                                $resulttext .= '<li>'.$chg.'</li>';
                            } else {
                                my $chg;
                                if ($lang eq 'nolang') {
                                    $chg = &mt('custom log-in help file for no preferred language');
                                } else {
                                    $chg = &mt('custom log-in help file for specific language: [_1]',$langchoices{$lang});
                                }
                                $resulttext .= '<li>'.&Apache::loncommon::modal_link(
                                                      $loginhash{'login'}{'helpurl'}{$lang}.
                                                      '?inhibitmenu=yes',$chg,600,500).
                                               '</li>';
                            }
                        }
                    }
                } elsif ($item eq 'headtag') {
                    if (ref($changes{$item}) eq 'HASH') {
                        foreach my $lonhost (sort(keys(%{$changes{$item}}))) {
                            if (grep(/^\Q$lonhost\E$/,@delheadtagurls)) {
                                $resulttext .= '<li>'.&mt('custom markup file removed for [_1]',$domservers{$lonhost}).'</li>';
                            } elsif (ref($loginhash{'login'}{'headtag'}{$lonhost}) eq 'HASH') {
                                $resulttext .= '<li><a href="'.
                                               "javascript:void(open('$loginhash{'login'}{'headtag'}{$lonhost}{'url'}?inhibitmenu=yes','Custom_HeadTag',
                                               'menubar=0,toolbar=1,scrollbars=1,width=600,height=500,resizable=yes'))".
                                               '">'.&mt('custom markup').'</a> '.&mt('(for [_1])',$servers{$lonhost}).' ';
                                if ($possexempt{$lonhost}) {
                                    $resulttext .= &mt('not included for client IP(s): [_1]',$possexempt{$lonhost});
                                } else {
                                    $resulttext .= &mt('included for any client IP');
                                }
                                $resulttext .= '</li>';
                            }
                        }
                    }
                } elsif ($item eq 'saml') {
                    if (ref($changes{$item}) eq 'HASH') {
                        my %notlt = (
                                       text   => 'Text for log-in by SSO',
                                       img    => 'SSO button image',
                                       alt    => 'Alt text for button image',
                                       url    => 'SSO URL',
                                       title  => 'Tooltip for SSO link',
                                       notsso => 'Text for non-SSO log-in',
                                    );
                        foreach my $lonhost (sort(keys(%{$changes{$item}}))) {
                            if (ref($currsaml{$lonhost}) eq 'HASH') {
                                $resulttext .= '<li>'.&mt("$title{$item} in use for [_1]","<b>$lonhost</b>").
                                               '<ul>';
                                foreach my $key ('text','img','alt','url','title','notsso') {
                                    if ($currsaml{$lonhost}{$key} eq '') {
                                        $resulttext .= '<li>'.&mt("$notlt{$key} not in use").'</li>';
                                    } else {
                                        my $value = "'$currsaml{$lonhost}{$key}'";
                                        if ($key eq 'img') {
                                            $value = '<img src="'.$currsaml{$lonhost}{$key}.'" />';
                                        }
                                        $resulttext .= '<li>'.&mt("$notlt{$key} set to: [_1]",
                                                                  $value).'</li>';
                                    }
                                }
                                $resulttext .= '</ul></li>';
                            } else {
                                $resulttext .= '<li>'.&mt("$title{$item} not in use for [_1]",$lonhost).'</li>';
                            }
                        }
                    }
                } elsif ($item eq 'captcha') {
                    if (ref($loginhash{'login'}) eq 'HASH') {
                        my $chgtxt;
                        if ($loginhash{'login'}{$item} eq 'notused') {
                            $chgtxt .= &mt('No CAPTCHA validation in use for helpdesk form.');
                        } else {
                            my %captchas = &captcha_phrases();
                            if ($captchas{$loginhash{'login'}{$item}}) {
                                $chgtxt .= &mt("Validation for helpdesk form set to $captchas{$loginhash{'login'}{$item}}.");
                            } else {
                                $chgtxt .= &mt('Validation for helpdesk form set to unknown type.');
                            }
                        }
                        $resulttext .= '<li>'.$chgtxt.'</li>';
                    }
                } elsif ($item eq 'recaptchakeys') {
                    if (ref($loginhash{'login'}) eq 'HASH') {
                        my ($privkey,$pubkey);
                        if (ref($loginhash{'login'}{$item}) eq 'HASH') {
                            $pubkey = $loginhash{'login'}{$item}{'public'};
                            $privkey = $loginhash{'login'}{$item}{'private'};
                        }
                        my $chgtxt .= &mt('ReCAPTCHA keys changes').'<ul>';
                        if (!$pubkey) {
                            $chgtxt .= '<li>'.&mt('Public key deleted').'</li>';
                        } else {
                            $chgtxt .= '<li>'.&mt('Public key set to [_1]',$pubkey).'</li>';
                        }
                        if (!$privkey) {
                            $chgtxt .= '<li>'.&mt('Private key deleted').'</li>';
                        } else {
                            $chgtxt .= '<li>'.&mt('Private key set to [_1]',$privkey).'</li>';
                        }
                        $chgtxt .= '</ul>';
                        $resulttext .= '<li>'.$chgtxt.'</li>';
                    }
                } elsif ($item eq 'recaptchaversion') {
                    if (ref($loginhash{'login'}) eq 'HASH') {
                        if ($loginhash{'login'}{'captcha'} eq 'recaptcha') {
                            $resulttext .= '<li>'.&mt('ReCAPTCHA for helpdesk form set to version [_1]',$loginhash{'login'}{'recaptchaversion'}).
                                           '</li>';
                        }
                    }
                } else {
                    $resulttext .= '<li>'.&mt("$title{$item} set to $offon[$env{'form.'.$item}]").'</li>';
                }
            }
            $resulttext .= $colchgtext.'</ul>';
        } else {
            $resulttext = &mt('No changes made to log-in page settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
	    &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if ($errors) {
        $resulttext .= '<br />'.&mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul>';
    }
    return $resulttext;
}

sub check_exempt_addresses {
    my ($iplist) = @_;
    $iplist =~ s/^\s+//;
    $iplist =~ s/\s+$//;
    my @poss_ips = split(/\s*[,:]\s*/,$iplist);
    my (@okips,$new);
    foreach my $ip (@poss_ips) {
        if ($ip =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/) {
            if (($1 <= 255) && ($2 <= 255) && ($3 <= 255) && ($4 <= 255)) {
                push(@okips,$ip);
            }
        }
    }
    if (@okips > 0) {
        $new = join(',',@okips);
    } else {
        $new = '';
    }
    return $new;
}

sub color_font_choices {
    my %choices =
        &Apache::lonlocal::texthash (
            img => "Header",
            bgs => "Background colors",
            links => "Link colors",
            images => "Images",
            font => "Font color",
            fontmenu => "Font menu",
            pgbg => "Page",
            tabbg => "Header",
            sidebg => "Border",
            link => "Link",
            alink => "Active link",
            vlink => "Visited link",
        );
    return %choices;
}

sub modify_ipaccess {
    my ($dom,$lastactref,%domconfig) = @_;
    my (@allpos,%changes,%confhash,$errors,$resulttext);
    my (@items,%deletions,%itemids,@warnings);
    my ($typeorder,$types) = &commblocktype_text();
    if ($env{'form.ipaccess_add'}) {
        my $name = $env{'form.ipaccess_name_add'};
        my ($newid,$error) = &get_ipaccess_id($dom,$name);
        if ($newid) {
            $itemids{'add'} = $newid;
            push(@items,'add');
            $changes{$newid} = 1;
        } else {
            $error = &mt('Failed to acquire unique ID for new IP access control item');
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }
    if (ref($domconfig{'ipaccess'}) eq 'HASH') {
        my @todelete = &Apache::loncommon::get_env_multiple('form.ipaccess_del');
        if (@todelete) {
            map { $deletions{$_} = 1; } @todelete;
        }
        my $maxnum = $env{'form.ipaccess_maxnum'};
        for (my $i=0; $i<$maxnum; $i++) {
            my $itemid = $env{'form.ipaccess_id_'.$i};
            $itemid =~ s/\D+//g;
            if (ref($domconfig{'ipaccess'}{$itemid}) eq 'HASH') {
                if ($deletions{$itemid}) {
                    $changes{$itemid} = $domconfig{'ipaccess'}{$itemid}{'name'};
                } else {
                    push(@items,$i);
                    $itemids{$i} = $itemid;
                }
            }
        }
    }
    foreach my $idx (@items) {
        my $itemid = $itemids{$idx};
        next unless ($itemid);
        my %current;
        unless ($idx eq 'add') {
            if (ref($domconfig{'ipaccess'}{$itemid}) eq 'HASH') {
                %current = %{$domconfig{'ipaccess'}{$itemid}};
            }
        }
        my $position = $env{'form.ipaccess_pos_'.$itemid};
        $position =~ s/\D+//g;
        if ($position ne '') {
            $allpos[$position] = $itemid;
        }
        my $name = $env{'form.ipaccess_name_'.$idx};
        $name =~ s/^\s+|\s+$//g;
        $confhash{$itemid}{'name'} = $name;
        my $possrange = $env{'form.ipaccess_range_'.$idx};
        $possrange =~ s/^\s+|\s+$//g;
        unless ($possrange eq '') {
            $possrange =~ s/[\r\n]+/\s/g;
            $possrange =~ s/\s*-\s*/-/g;
            $possrange =~ s/\s+/,/g;
            $possrange =~ s/,+/,/g;
            if ($possrange ne '') {
                my (@ok,$count);
                $count = 0; 
                foreach my $poss (split(/\,/,$possrange)) {
                    $count ++;
                    $poss = &validate_ip_pattern($poss);
                    if ($poss ne '') {
                        push(@ok,$poss);
                    }
                }
                my $diff = $count - scalar(@ok);
                if ($diff) {
                    $errors .= '<li><span class="LC_error">'.
                               &mt('[quant,_1,IP] invalid and excluded from saved value for IP range(s) for [_2]',
                                   $diff,$name).
                               '</span></li>';
                }
                if (@ok) {
                    my @cidr_list;
                    foreach my $item (@ok) {
                        @cidr_list = &Net::CIDR::cidradd($item,@cidr_list);
                    }
                    $confhash{$itemid}{'ip'} = join(',',@cidr_list);
                }
            }
        }
        foreach my $field ('name','ip') {
            unless (($idx eq 'add') || ($changes{$itemid})) {
                if ($current{$field} ne $confhash{$itemid}{$field}) {
                    $changes{$itemid} = 1;
                    last;
                }
            }
        }
        $confhash{$itemid}{'commblocks'} = {};
         
        my %commblocks;
        map { $commblocks{$_} = 1; } &Apache::loncommon::get_env_multiple('form.ipaccess_block_'.$idx);  
        foreach my $type (@{$typeorder}) {
            if ($commblocks{$type}) {
                $confhash{$itemid}{'commblocks'}{$type} = 'on';
            }
            unless (($idx eq 'add') || ($changes{$itemid})) {
                if (ref($current{'commblocks'}) eq 'HASH') {
                    if ($confhash{$itemid}{'commblocks'}{$type} ne $current{'commblocks'}{$type}) {
                        $changes{$itemid} = 1;
                    }
                } elsif ($confhash{$itemid}{'commblocks'}{$type}) {
                    $changes{$itemid} = 1;
                }
            }
        }
        $confhash{$itemid}{'courses'} = {};
        my %crsdeletions;
        my @delcrs = &Apache::loncommon::get_env_multiple('form.ipaccess_course_delete_'.$idx);
        if (@delcrs) {
            map { $crsdeletions{$_} = 1; } @delcrs;
        }
        if (ref($current{'courses'}) eq 'HASH') {
            foreach my $cid (sort(keys(%{$current{'courses'}}))) {
                if ($crsdeletions{$cid}) {
                    $changes{$itemid} = 1;
                } else {
                    $confhash{$itemid}{'courses'}{$cid} = 1;
                }
            }
        }
        $env{'form.ipaccess_cnum_'.$idx} =~ s/^\s+|\s+$//g;
        $env{'form.ipaccess_cdom_'.$idx} =~ s/^\s+|\s+$//g;
        if (($env{'form.ipaccess_cnum_'.$idx} =~ /^$match_courseid$/) && 
            ($env{'form.ipaccess_cdom_'.$idx} =~ /^$match_domain$/)) {
            if (&Apache::lonnet::homeserver($env{'form.ipaccess_cnum_'.$idx},
                                            $env{'form.ipaccess_cdom_'.$idx}) eq 'no_host') {
                $errors .= '<li><span class="LC_error">'.
                           &mt('Invalid courseID [_1] omitted from list of allowed courses',
                               $env{'form.ipaccess_cdom_'.$idx}.'_'.$env{'form.ipaccess_cnum_'.$idx}).
                           '</span></li>';
            } else {
                $confhash{$itemid}{'courses'}{$env{'form.ipaccess_cdom_'.$idx}.'_'.$env{'form.ipaccess_cnum_'.$idx}} = 1;
                $changes{$itemid} = 1;
            }
        }
    }
    if (@allpos > 0) {
        my $idx = 0;
        foreach my $itemid (@allpos) {
            if ($itemid ne '') {
                $confhash{$itemid}{'order'} = $idx;
                unless ($changes{$itemid}) {
                    if (ref($domconfig{'ipaccess'}) eq 'HASH') {
                        if (ref($domconfig{'ipaccess'}{$itemid}) eq 'HASH') {
                            if ($domconfig{'ipaccess'}{$itemid}{'order'} ne $idx) {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                }
                $idx ++;
            }
        }
    }
    if (keys(%changes)) {
        my %defaultshash = (
                              ipaccess => \%confhash,
                           );
        my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                                 $dom);
        if ($putresult eq 'ok') {
            my $cachetime = 1800;
            &Apache::lonnet::do_cache_new('ipaccess',$dom,\%confhash,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'ipaccess'} = 1;
            }
            $resulttext = &mt('Changes made:').'<ul>';
            my %bynum;
            foreach my $itemid (sort(keys(%changes))) {
                if (ref($confhash{$itemid}) eq 'HASH') {
                    my $position = $confhash{$itemid}{'order'};
                    if ($position =~ /^\d+$/) {
                        $bynum{$position} = $itemid;
                    }
                }
            }
            if (keys(%deletions)) {
                foreach my $itemid (sort { $a <=> $b } keys(%deletions)) {
                    $resulttext .= '<li>'.&mt('Deleted: [_1]',$changes{$itemid}).'</li>';
                }
            }
            foreach my $pos (sort { $a <=> $b } keys(%bynum)) {
                my $itemid = $bynum{$pos};
                if (ref($confhash{$itemid}) eq 'HASH') {
                    $resulttext .= '<li><b>'.$confhash{$itemid}{'name'}.'</b><ul>';
                    my $position = $pos + 1;
                    $resulttext .= '<li>'.&mt('Order: [_1]',$position).'</li>';
                    if ($confhash{$itemid}{'ip'} eq '') {
                        $resulttext .= '<li>'.&mt('No IP Range(s) set').'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('IP Range(s): [_1]',$confhash{$itemid}{'ip'}).'</li>';
                    }
                    if (keys(%{$confhash{$itemid}{'commblocks'}})) {
                        $resulttext .= '<li>'.&mt('Functionality Blocked: [_1]',
                                                  join(', ', map { $types->{$_}; } sort(keys(%{$confhash{$itemid}{'commblocks'}})))).
                                       '</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('No functionality blocked').'</li>';
                    }
                    if (keys(%{$confhash{$itemid}{'courses'}})) {
                        my @courses;
                        foreach my $cid (sort(keys(%{$confhash{$itemid}{'courses'}}))) {
                            my %courseinfo = &Apache::lonnet::coursedescription($cid,{'one_time' => 1}); 
                            push(@courses,$courseinfo{'description'}.' ('.$cid.')');
                        }
                        $resulttext .= '<li>'.&mt('Courses/Communities allowed').':<ul><li>'.
                                             join('</li><li>',@courses).'</li></ul>';
                    } else {
                        $resulttext .= '<li>'.&mt('No courses allowed').'</li>';
                    }
                    $resulttext .= '</ul></li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
        }
    } else {
        $resulttext = &mt('No changes made');
    }
    if ($errors) {
        $resulttext .= '<p>'.&mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul></p>';
    }
    return $resulttext;
}

sub get_ipaccess_id {
    my ($domain,$location) = @_;
    # get lock on ipaccess db
    my $lockhash = {
                      lock => $env{'user.name'}.
                              ':'.$env{'user.domain'},
                   };
    my $tries = 0;
    my $gotlock = &Apache::lonnet::newput_dom('ipaccess',$lockhash,$domain);
    my ($id,$error);

    while (($gotlock ne 'ok') && ($tries<10)) {
        $tries ++;
        sleep (0.1);
        $gotlock = &Apache::lonnet::newput_dom('ipaccess',$lockhash,$domain);
    }
    if ($gotlock eq 'ok') {
        my %currids = &Apache::lonnet::dump_dom('ipaccess',$domain);
        if ($currids{'lock'}) {
            delete($currids{'lock'});
            if (keys(%currids)) {
                my @curr = sort { $a <=> $b } keys(%currids);
                if ($curr[-1] =~ /^\d+$/) {
                    $id = 1 + $curr[-1];
                }
            } else {
                $id = 1;
            }
            if ($id) {
                unless (&Apache::lonnet::newput_dom('ipaccess',{ $id => $location },$domain) eq 'ok') {
                    $error = 'nostore';
                }
            } else {
                $error = 'nonumber';
            }
        }
        my $dellockoutcome = &Apache::lonnet::del_dom('ipaccess',['lock'],$domain);
    } else {
        $error = 'nolock';
    }
    return ($id,$error);
}

sub modify_rolecolors {
    my ($r,$dom,$confname,$roles,$lastactref,%domconfig) = @_;
    my ($resulttext,%rolehash);
    $rolehash{'rolecolors'} = {};
    if (ref($domconfig{'rolecolors'}) ne 'HASH') {
        if ($domconfig{'rolecolors'} eq '') {
            $domconfig{'rolecolors'} = {};
        }
    }
    my ($errors,%changes) = &modify_colors($r,$dom,$confname,$roles,
                         $domconfig{'rolecolors'},$rolehash{'rolecolors'});
    my $putresult = &Apache::lonnet::put_dom('configuration',\%rolehash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            &Apache::loncommon::devalidate_domconfig_cache($dom);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domainconfig'} = 1;
            }
            $resulttext = &display_colorchgs($dom,\%changes,$roles,
                                             $rolehash{'rolecolors'});
        } else {
            $resulttext = &mt('No changes made to default color schemes');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
	    &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if ($errors) {
        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul>';
    }
    return $resulttext;
}

sub modify_colors {
    my ($r,$dom,$confname,$roles,$domconfig,$confhash) = @_;
    my (%changes,%choices);
    my @bgs;
    my @links = ('link','alink','vlink');
    my @logintext;
    my @images;
    my $servadm = $r->dir_config('lonAdmEMail');
    my $errors;
    my %defaults;
    foreach my $role (@{$roles}) {
        if ($role eq 'login') {
            %choices = &login_choices();
            @logintext = ('textcol','bgcol');
        } else {
            %choices = &color_font_choices();
        }
        if ($role eq 'login') {
            @images = ('img','logo','domlogo','login');
            @bgs = ('pgbg','mainbg','sidebg');
        } else {
            @images = ('img');
            @bgs = ('pgbg','tabbg','sidebg');
        }
        my %defaults = &role_defaults($role,\@bgs,\@links,\@images,\@logintext);
        unless ($env{'form.'.$role.'_font'} eq $defaults{'font'}) {
            $confhash->{$role}{'font'} = $env{'form.'.$role.'_font'};
        }
        if ($role eq 'login') {
            foreach my $item (@logintext) {
                $env{'form.'.$role.'_'.$item} = lc($env{'form.'.$role.'_'.$item});
                if ($env{'form.'.$role.'_'.$item} =~ /^\w+/) {
                    $env{'form.'.$role.'_'.$item} = '#'.$env{'form.'.$role.'_'.$item};
                }
                unless ($env{'form.'.$role.'_'.$item} eq lc($defaults{'logintext'}{$item})) {
                    $confhash->{$role}{$item} = $env{'form.'.$role.'_'.$item};
                }
            }
        } else {
            $env{'form.'.$role.'_fontmenu'} = lc($env{'form.'.$role.'_fontmenu'});
            if ($env{'form.'.$role.'_fontmenu'} =~ /^\w+/) {
                $env{'form.'.$role.'_fontmenu'} = '#'.$env{'form.'.$role.'_fontmenu'};
            }
            unless($env{'form.'.$role.'_fontmenu'} eq lc($defaults{'fontmenu'})) {
                $confhash->{$role}{'fontmenu'} = $env{'form.'.$role.'_fontmenu'};
            }
        }
        foreach my $item (@bgs) {
            $env{'form.'.$role.'_'.$item} = lc($env{'form.'.$role.'_'.$item});
            if ($env{'form.'.$role.'_'.$item} =~ /^\w+/) {
                $env{'form.'.$role.'_'.$item} = '#'.$env{'form.'.$role.'_'.$item};
            }
            unless ($env{'form.'.$role.'_'.$item} eq lc($defaults{'bgs'}{$item})) {
                $confhash->{$role}{$item} = $env{'form.'.$role.'_'.$item};
            }
        }
        foreach my $item (@links) {
            $env{'form.'.$role.'_'.$item} = lc($env{'form.'.$role.'_'.$item});
            if ($env{'form.'.$role.'_'.$item} =~ /^\w+/) {
                $env{'form.'.$role.'_'.$item} = '#'.$env{'form.'.$role.'_'.$item};
            }
            unless ($env{'form.'.$role.'_'.$item} eq lc($defaults{'links'}{$item})) {
                $confhash->{$role}{$item} = $env{'form.'.$role.'_'.$item};
            }
        }
        my ($configuserok,$author_ok,$switchserver) = 
            &config_check($dom,$confname,$servadm);
        my ($width,$height) = &thumb_dimensions();
        if (ref($domconfig->{$role}) ne 'HASH') {
            $domconfig->{$role} = {};
        }
        foreach my $img (@images) {
            if (($role eq 'login') && (($img eq 'img') || ($img eq 'logo'))) {  
                if (defined($env{'form.login_showlogo_'.$img})) {
                    $confhash->{$role}{'showlogo'}{$img} = 1;
                } else { 
                    $confhash->{$role}{'showlogo'}{$img} = 0;
                }
            } 
	    if ( ! $env{'form.'.$role.'_'.$img.'.filename'} 
		 && !defined($domconfig->{$role}{$img})
		 && !$env{'form.'.$role.'_del_'.$img}
		 && $env{'form.'.$role.'_import_'.$img}) {
		# import the old configured image from the .tab setting
		# if they haven't provided a new one 
		$domconfig->{$role}{$img} = 
		    $env{'form.'.$role.'_import_'.$img};
	    }
            if ($env{'form.'.$role.'_'.$img.'.filename'} ne '') {
                my $error;
                if ($configuserok eq 'ok') {
                    if ($switchserver) {
                        $error = &mt("Upload of [_1] image for $role page(s) is not permitted to this server: [_2]",$choices{$img},$switchserver);
                    } else {
                        if ($author_ok eq 'ok') {
                            my ($result,$logourl) = 
                                &publishlogo($r,'upload',$role.'_'.$img,
                                           $dom,$confname,$img,$width,$height);
                            if ($result eq 'ok') {
                                $confhash->{$role}{$img} = $logourl;
                                $changes{$role}{'images'}{$img} = 1;
                            } else {
                                $error = &mt("Upload of [_1] image for $role page(s) failed because an error occurred publishing the file in RES space. Error was: [_2].",$choices{img},$result);
                            }
                        } else {
                            $error = &mt("Upload of [_1] image for $role page(s) failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$choices{$img},$confname,$dom,$author_ok);
                        }
                    }
                } else {
                    $error = &mt("Upload of [_1] image for $role page(s) failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$choices{$img},$confname,$dom,$configuserok);
                }
                if ($error) {
                    &Apache::lonnet::logthis($error);
                    $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                }
            } elsif ($domconfig->{$role}{$img} ne '') {
                if ($domconfig->{$role}{$img} !~ m-^(/res/\Q$dom\E/\Q$confname\E/\Q$img\E)/([^/]+)$-) {
                    my $error;
                    if ($configuserok eq 'ok') {
# is confname an author?
                        if ($switchserver eq '') {
                            if ($author_ok eq 'ok') {
                                my ($result,$logourl) = 
                               &publishlogo($r,'copy',$domconfig->{$role}{$img},
                                            $dom,$confname,$img,$width,$height);
                                if ($result eq 'ok') {
                                    $confhash->{$role}{$img} = $logourl;
				    $changes{$role}{'images'}{$img} = 1;
                                }
                            }
                        }
                    }
                }
            }
        }
        if (ref($domconfig) eq 'HASH') {
            if (ref($domconfig->{$role}) eq 'HASH') {
                foreach my $img (@images) {
                    if ($domconfig->{$role}{$img} ne '') {
                        if ($env{'form.'.$role.'_del_'.$img}) {
                            $confhash->{$role}{$img} = '';
                            $changes{$role}{'images'}{$img} = 1;
                        } else {
                            if ($confhash->{$role}{$img} eq '') {
                                $confhash->{$role}{$img} = $domconfig->{$role}{$img};
                            }
                        }
                    } else {
                        if ($env{'form.'.$role.'_del_'.$img}) {
                            $confhash->{$role}{$img} = '';
                            $changes{$role}{'images'}{$img} = 1;
                        } 
                    }
                    if (($role eq 'login') && (($img eq 'logo') || ($img eq 'img'))) {
                        if (ref($domconfig->{'login'}{'showlogo'}) eq 'HASH') {
                            if ($confhash->{$role}{'showlogo'}{$img} ne 
                                $domconfig->{$role}{'showlogo'}{$img}) {
                                $changes{$role}{'showlogo'}{$img} = 1; 
                            }
                        } else {
                            if ($confhash->{$role}{'showlogo'}{$img} == 0) {
                                $changes{$role}{'showlogo'}{$img} = 1;
                            }
                        }
                    }
                }
                if ($domconfig->{$role}{'font'} ne '') {
                    if ($confhash->{$role}{'font'} ne $domconfig->{$role}{'font'}) {
                        $changes{$role}{'font'} = 1;
                    }
                } else {
                    if ($confhash->{$role}{'font'}) {
                        $changes{$role}{'font'} = 1;
                    }
                }
                if ($role ne 'login') {
                    if ($domconfig->{$role}{'fontmenu'} ne '') {
                        if ($confhash->{$role}{'fontmenu'} ne $domconfig->{$role}{'fontmenu'}) {
                            $changes{$role}{'fontmenu'} = 1;
                        }
                    } else {
                        if ($confhash->{$role}{'fontmenu'}) {
                            $changes{$role}{'fontmenu'} = 1;
                        }
                    }
                }
                foreach my $item (@bgs) {
                    if ($domconfig->{$role}{$item} ne '') {
                        if ($confhash->{$role}{$item} ne $domconfig->{$role}{$item}) {
                            $changes{$role}{'bgs'}{$item} = 1;
                        } 
                    } else {
                        if ($confhash->{$role}{$item}) {
                            $changes{$role}{'bgs'}{$item} = 1;
                        }
                    }
                }
                foreach my $item (@links) {
                    if ($domconfig->{$role}{$item} ne '') {
                        if ($confhash->{$role}{$item} ne $domconfig->{$role}{$item}) {
                            $changes{$role}{'links'}{$item} = 1;
                        }
                    } else {
                        if ($confhash->{$role}{$item}) {
                            $changes{$role}{'links'}{$item} = 1;
                        }
                    }
                }
                foreach my $item (@logintext) {
                    if ($domconfig->{$role}{$item} ne '') {
                        if ($confhash->{$role}{$item} ne $domconfig->{$role}{$item}) {
                            $changes{$role}{'logintext'}{$item} = 1;
                        }
                    } else {
                        if ($confhash->{$role}{$item}) {
                            $changes{$role}{'logintext'}{$item} = 1;
                        }
                    }
                }
            } else {
                &default_change_checker($role,\@images,\@links,\@bgs,
                                        \@logintext,$confhash,\%changes); 
            }
        } else {
            &default_change_checker($role,\@images,\@links,\@bgs,
                                    \@logintext,$confhash,\%changes); 
        }
    }
    return ($errors,%changes);
}

sub config_check {
    my ($dom,$confname,$servadm) = @_;
    my ($configuserok,$author_ok,$switchserver,%currroles);
    my $uhome = &Apache::lonnet::homeserver($confname,$dom,1);
    ($configuserok,%currroles) = &check_configuser($uhome,$dom,
                                                   $confname,$servadm);
    if ($configuserok eq 'ok') {
        $switchserver = &check_switchserver($dom,$confname);
        if ($switchserver eq '') {
            $author_ok = &check_authorstatus($dom,$confname,%currroles);
        }
    }
    return ($configuserok,$author_ok,$switchserver);
}

sub default_change_checker {
    my ($role,$images,$links,$bgs,$logintext,$confhash,$changes) = @_;
    foreach my $item (@{$links}) {
        if ($confhash->{$role}{$item}) {
            $changes->{$role}{'links'}{$item} = 1;
        }
    }
    foreach my $item (@{$bgs}) {
        if ($confhash->{$role}{$item}) {
            $changes->{$role}{'bgs'}{$item} = 1;
        }
    }
    foreach my $item (@{$logintext}) {
        if ($confhash->{$role}{$item}) {
            $changes->{$role}{'logintext'}{$item} = 1;
        }
    }
    foreach my $img (@{$images}) {
        if ($env{'form.'.$role.'_del_'.$img}) {
            $confhash->{$role}{$img} = '';
            $changes->{$role}{'images'}{$img} = 1;
        }
        if ($role eq 'login') {
            if ($confhash->{$role}{'showlogo'}{$img} == 0) {
                $changes->{$role}{'showlogo'}{$img} = 1;
            }
        }
    }
    if ($confhash->{$role}{'font'}) {
        $changes->{$role}{'font'} = 1;
    }
}

sub display_colorchgs {
    my ($dom,$changes,$roles,$confhash) = @_;
    my (%choices,$resulttext);
    if (!grep(/^login$/,@{$roles})) {
        $resulttext = &mt('Changes made:').'<br />';
    }
    foreach my $role (@{$roles}) {
        if ($role eq 'login') {
            %choices = &login_choices();
        } else {
            %choices = &color_font_choices();
        }
        if (ref($changes->{$role}) eq 'HASH') {
            if ($role ne 'login') {
                $resulttext .= '<h4>'.&mt($role).'</h4>';
            }
            foreach my $key (sort(keys(%{$changes->{$role}}))) {
                if ($role ne 'login') {
                    $resulttext .= '<ul>';
                }
                if (ref($changes->{$role}{$key}) eq 'HASH') {
                    if ($role ne 'login') {
                        $resulttext .= '<li>'.&mt($choices{$key}).':<ul>';
                    }
                    foreach my $item (sort(keys(%{$changes->{$role}{$key}}))) {
                        if (($role eq 'login') && ($key eq 'showlogo')) {
                            if ($confhash->{$role}{$key}{$item}) {
                                $resulttext .= '<li>'.&mt("$choices{$item} set to be displayed").'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt("$choices{$item} set to not be displayed").'</li>';
                            }
                        } elsif ($confhash->{$role}{$item} eq '') {
                            $resulttext .= '<li>'.&mt("$choices{$item} set to default").'</li>';
                        } else {
                            my $newitem = $confhash->{$role}{$item};
                            if ($key eq 'images') {
                                $newitem = '<img src="'.$confhash->{$role}{$item}.'" alt="'.$choices{$item}.'" style="vertical-align: bottom" />';
                            }
                            $resulttext .= '<li>'.&mt("$choices{$item} set to [_1]",$newitem).'</li>';
                        }
                    }
                    if ($role ne 'login') {
                        $resulttext .= '</ul></li>';
                    }
                } else {
                    if ($confhash->{$role}{$key} eq '') {
                        $resulttext .= '<li>'.&mt("$choices{$key} set to default").'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt("$choices{$key} set to [_1]",$confhash->{$role}{$key}).'</li>';
                    }
                }
                if ($role ne 'login') {
                    $resulttext .= '</ul>';
                }
            }
        }
    }
    return $resulttext;
}

sub thumb_dimensions {
    return ('200','50');
}

sub check_dimensions {
    my ($inputfile) = @_;
    my ($fullwidth,$fullheight);
    if ($inputfile =~ m|^[/\w.\-]+$|) {
        if (open(PIPE,"identify $inputfile 2>&1 |")) {
            my $imageinfo = <PIPE>;
            if (!close(PIPE)) {
                &Apache::lonnet::logthis("Failed to close PIPE opened to retrieve image information for $inputfile");
            }
            chomp($imageinfo);
            my ($fullsize) = 
                ($imageinfo =~ /^\Q$inputfile\E\s+\w+\s+(\d+x\d+)/);
            if ($fullsize) {
                ($fullwidth,$fullheight) = split(/x/,$fullsize);
            }
        }
    }
    return ($fullwidth,$fullheight);
}

sub check_configuser {
    my ($uhome,$dom,$confname,$servadm) = @_;
    my ($configuserok,%currroles);
    if ($uhome eq 'no_host') {
        srand( time() ^ ($$ + ($$ << 15))  ); # Seed rand.
        my $configpass = &LONCAPA::Enrollment::create_password($dom);
        $configuserok = 
            &Apache::lonnet::modifyuser($dom,$confname,'','internal',
                             $configpass,'','','','','',undef,$servadm);
    } else {
        $configuserok = 'ok';
        %currroles = 
            &Apache::lonnet::get_my_roles($confname,$dom,'userroles');
    }
    return ($configuserok,%currroles);
}

sub check_authorstatus {
    my ($dom,$confname,%currroles) = @_;
    my $author_ok;
    if (!$currroles{':'.$dom.':au'}) {
        my $start = time;
        my $end = 0;
        $author_ok = 
            &Apache::lonnet::assignrole($dom,$confname,'/'.$dom.'/',
                                        'au',$end,$start,'','','domconfig');
    } else {
        $author_ok = 'ok';
    }
    return $author_ok;
}

sub publishlogo {
    my ($r,$action,$formname,$dom,$confname,$subdir,$thumbwidth,$thumbheight,$savefileas) = @_;
    my ($output,$fname,$logourl,$madethumb);
    if ($action eq 'upload') {
        $fname=$env{'form.'.$formname.'.filename'};
        chop($env{'form.'.$formname});
    } else {
        ($fname) = ($formname =~ /([^\/]+)$/);
    }
    if ($savefileas ne '') {
        $fname = $savefileas;
    }
    $fname=&Apache::lonnet::clean_filename($fname);
# See if there is anything left
    unless ($fname) { return ('error: no uploaded file'); }
    $fname="$subdir/$fname";
    my $docroot=$r->dir_config('lonDocRoot');
    my $filepath="$docroot/priv";
    my $relpath = "$dom/$confname";
    my ($fnamepath,$file,$fetchthumb);
    $file=$fname;
    if ($fname=~m|/|) {
        ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
    }
    my @parts=split(/\//,"$filepath/$relpath/$fnamepath");
    my $count;
    for ($count=5;$count<=$#parts;$count++) {
        $filepath.="/$parts[$count]";
        if ((-e $filepath)!=1) {
            mkdir($filepath,02770);
        }
    }
    # Check for bad extension and disallow upload
    if ($file=~/\.(\w+)$/ &&
        (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
        $output = 
            &mt('Invalid file extension ([_1]) - reserved for internal use.',$1); 
    } elsif ($file=~/\.(\w+)$/ &&
        !defined(&Apache::loncommon::fileembstyle($1))) {
        $output = &mt('Unrecognized file extension ([_1]) - rename the file with a proper extension and re-upload.',$1);
    } elsif ($file=~/\.(\d+)\.(\w+)$/) {
        $output = &mt('Filename not allowed - rename the file to remove the number immediately before the file extension([_1]) and re-upload.',$2);
    } elsif (-d "$filepath/$file") {
        $output = &mt('Filename is a directory name - rename the file and re-upload');
    } else {
        my $source = $filepath.'/'.$file;
        my $logfile;
        if (!open($logfile,">>",$source.'.log')) {
            return (&mt('No write permission to Authoring Space'));
        }
        print $logfile
"\n================= Publish ".localtime()." ================\n".
$env{'user.name'}.':'.$env{'user.domain'}."\n";
# Save the file
        if (!open(FH,">",$source)) {
            &Apache::lonnet::logthis('Failed to create '.$source);
            return (&mt('Failed to create file'));
        }
        if ($action eq 'upload') {
            if (!print FH ($env{'form.'.$formname})) {
                &Apache::lonnet::logthis('Failed to write to '.$source);
                return (&mt('Failed to write file'));
            }
        } else {
            my $original = &Apache::lonnet::filelocation('',$formname);
            if(!copy($original,$source)) {
                &Apache::lonnet::logthis('Failed to copy '.$original.' to '.$source);
                return (&mt('Failed to write file'));
            }
        }
        close(FH);
        chmod(0660, $source); # Permissions to rw-rw---.

        my $targetdir=$docroot.'/res/'.$dom.'/'.$confname .'/'.$fnamepath;
        my $copyfile=$targetdir.'/'.$file;

        my @parts=split(/\//,$targetdir);
        my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
        for (my $count=5;$count<=$#parts;$count++) {
            $path.="/$parts[$count]";
            if (!-e $path) {
                print $logfile "\nCreating directory ".$path;
                mkdir($path,02770);
            }
        }
        my $versionresult;
        if (-e $copyfile) {
            $versionresult = &logo_versioning($targetdir,$file,$logfile);
        } else {
            $versionresult = 'ok';
        }
        if ($versionresult eq 'ok') {
            if (copy($source,$copyfile)) {
                print $logfile "\nCopied original source to ".$copyfile."\n";
                $output = 'ok';
                $logourl = '/res/'.$dom.'/'.$confname.'/'.$fname;
                push(@{$modified_urls},[$copyfile,$source]);
                my $metaoutput = 
                    &write_metadata($dom,$confname,$formname,$targetdir,$file,$logfile);
                unless ($registered_cleanup) {
                    my $handlers = $r->get_handlers('PerlCleanupHandler');
                    $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
                    $registered_cleanup=1;
                }
            } else {
                print $logfile "\nUnable to write ".$copyfile.':'.$!."\n";
                $output = &mt('Failed to copy file to RES space').", $!";
            }
            if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
                my $inputfile = $filepath.'/'.$file;
                my $outfile = $filepath.'/'.'tn-'.$file;
                my ($fullwidth,$fullheight) = &check_dimensions($inputfile);
                if ($fullwidth ne '' && $fullheight ne '') { 
                    if ($fullwidth > $thumbwidth && $fullheight > $thumbheight) {
                        my $thumbsize = $thumbwidth.'x'.$thumbheight;
                        my @args = ('convert','-sample',$thumbsize,$inputfile,$outfile);
                        system({$args[0]} @args);
                        chmod(0660, $filepath.'/tn-'.$file);
                        if (-e $outfile) {
                            my $copyfile=$targetdir.'/tn-'.$file;
                            if (copy($outfile,$copyfile)) {
                                print $logfile "\nCopied source to ".$copyfile."\n";
                                my $thumb_metaoutput = 
                                    &write_metadata($dom,$confname,$formname,
                                                    $targetdir,'tn-'.$file,$logfile);
                                push(@{$modified_urls},[$copyfile,$outfile]);
                                unless ($registered_cleanup) {
                                    my $handlers = $r->get_handlers('PerlCleanupHandler');
                                    $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
                                    $registered_cleanup=1;
                                }
                                $madethumb = 1;
                            } else {
                                print $logfile "\nUnable to write ".$copyfile.
                                               ':'.$!."\n";
                            }
                        }
                    }
                }
            }
        } else {
            $output = $versionresult;
        }
    }
    return ($output,$logourl,$madethumb);
}

sub logo_versioning {
    my ($targetdir,$file,$logfile) = @_;
    my $target = $targetdir.'/'.$file;
    my ($maxversion,$fn,$extn,$output);
    $maxversion = 0;
    if ($file =~ /^(.+)\.(\w+)$/) {
        $fn=$1;
        $extn=$2;
    }
    opendir(DIR,$targetdir);
    while (my $filename=readdir(DIR)) {
        if ($filename=~/\Q$fn\E\.(\d+)\.\Q$extn\E$/) {
            $maxversion=($1>$maxversion)?$1:$maxversion;
        }
    }
    $maxversion++;
    print $logfile "\nCreating old version ".$maxversion."\n";
    my $copyfile=$targetdir.'/'.$fn.'.'.$maxversion.'.'.$extn;
    if (copy($target,$copyfile)) {
        print $logfile "Copied old target to ".$copyfile."\n";
        $copyfile=$copyfile.'.meta';
        if (copy($target.'.meta',$copyfile)) {
            print $logfile "Copied old target metadata to ".$copyfile."\n";
            $output = 'ok';
        } else {
            print $logfile "Unable to write metadata ".$copyfile.':'.$!."\n";
            $output = &mt('Failed to copy old meta').", $!, ";
        }
    } else {
        print $logfile "Unable to write ".$copyfile.':'.$!."\n";
        $output = &mt('Failed to copy old target').", $!, ";
    }
    return $output;
}

sub write_metadata {
    my ($dom,$confname,$formname,$targetdir,$file,$logfile) = @_;
    my (%metadatafields,%metadatakeys,$output);
    $metadatafields{'title'}=$formname;
    $metadatafields{'creationdate'}=time;
    $metadatafields{'lastrevisiondate'}=time;
    $metadatafields{'copyright'}='public';
    $metadatafields{'modifyinguser'}=$env{'user.name'}.':'.
                                         $env{'user.domain'};
    $metadatafields{'authorspace'}=$confname.':'.$dom;
    $metadatafields{'domain'}=$dom;
    {
        print $logfile "\nWrite metadata file for ".$targetdir.'/'.$file;
        my $mfh;
        if (open($mfh,">",$targetdir.'/'.$file.'.meta')) {
            foreach (sort(keys(%metadatafields))) {
                unless ($_=~/\./) {
                    my $unikey=$_;
                    $unikey=~/^([A-Za-z]+)/;
                    my $tag=$1;
                    $tag=~tr/A-Z/a-z/;
                    print $mfh "\n\<$tag";
                    foreach (split(/\,/,$metadatakeys{$unikey})) {
                        my $value=$metadatafields{$unikey.'.'.$_};
                        $value=~s/\"/\'\'/g;
                        print $mfh ' '.$_.'="'.$value.'"';
                    }
                    print $mfh '>'.
                        &HTML::Entities::encode($metadatafields{$unikey},'<>&"')
                            .'</'.$tag.'>';
                }
            }
            $output = 'ok';
            print $logfile "\nWrote metadata";
            close($mfh);
        } else {
            print $logfile "\nFailed to open metadata file";
            $output = &mt('Could not write metadata');
        }
    }
    return $output;
}

sub notifysubscribed {
    foreach my $targetsource (@{$modified_urls}){
        next unless (ref($targetsource) eq 'ARRAY');
        my ($target,$source)=@{$targetsource};
        if ($source ne '') {
            if (open(my $logfh,">>",$source.'.log')) {
                print $logfh "\nCleanup phase: Notifications\n";
                my @subscribed=&subscribed_hosts($target);
                foreach my $subhost (@subscribed) {
                    print $logfh "\nNotifying host ".$subhost.':';
                    my $reply=&Apache::lonnet::critical('update:'.$target,$subhost);
                    print $logfh $reply;
                }
                my @subscribedmeta=&subscribed_hosts("$target.meta");
                foreach my $subhost (@subscribedmeta) {
                    print $logfh "\nNotifying host for metadata only ".$subhost.':';
                    my $reply=&Apache::lonnet::critical('update:'.$target.'.meta',
                                                        $subhost);
                    print $logfh $reply;
                }
                print $logfh "\n============ Done ============\n";
                close($logfh);
            }
        }
    }
    return OK;
}

sub subscribed_hosts {
    my ($target) = @_;
    my @subscribed;
    if (open(my $fh,"<","$target.subscription")) {
        while (my $subline=<$fh>) {
            if ($subline =~ /^($match_lonid):/) {
                my $host = $1;
                if ($host ne $Apache::lonnet::perlvar{'lonHostID'}) {
                    unless (grep(/^\Q$host\E$/,@subscribed)) {
                        push(@subscribed,$host);
                    }
                }
            }
        }
    }
    return @subscribed;
}

sub check_switchserver {
    my ($dom,$confname) = @_;
    my ($allowed,$switchserver);
    my $home = &Apache::lonnet::homeserver($confname,$dom);
    if ($home eq 'no_host') {
        $home = &Apache::lonnet::domain($dom,'primary');
    }
    my @ids=&Apache::lonnet::current_machine_ids();
    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
    if (!$allowed) {
	$switchserver='<a href="/adm/switchserver?otherserver='.$home.'&amp;role=dc./'.$dom.'/&amp;destinationurl=/adm/domainprefs">'.&mt('Switch Server').'</a>';
    }
    return $switchserver;
}

sub modify_quotas {
    my ($r,$dom,$action,$lastactref,%domconfig) = @_;
    my ($context,@usertools,@options,%validations,%titles,%confhash,%toolshash,
        %limithash,$toolregexp,%conditions,$resulttext,%changes,$confname,$configuserok,
        $author_ok,$switchserver,$errors,$validationitemsref,$validationnamesref,
        $validationfieldsref);
    if ($action eq 'quotas') {
        $context = 'tools'; 
    } else {
        $context = $action;
    }
    if ($context eq 'requestcourses') {
        @usertools = ('official','unofficial','community','textbook','placement','lti');
        @options =('norequest','approval','validate','autolimit');
        %validations = &Apache::lonnet::auto_courserequest_checks($dom);
        %titles = &courserequest_titles();
        $toolregexp = join('|',@usertools);
        %conditions = &courserequest_conditions();
        $confname = $dom.'-domainconfig';
        my $servadm = $r->dir_config('lonAdmEMail');
        ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
        ($validationitemsref,$validationnamesref,$validationfieldsref) = 
            &Apache::loncoursequeueadmin::requestcourses_validation_types();
    } elsif ($context eq 'requestauthor') {
        @usertools = ('author');
        %titles = &authorrequest_titles();
    } else {
        @usertools = ('aboutme','blog','webdav','portfolio');
        %titles = &tool_titles();
    }
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    foreach my $key (keys(%env)) {
        if ($context eq 'requestcourses') {
            if ($key =~ /^form\.crsreq_($toolregexp)_(.+)$/) {
                my $item = $1;
                my $type = $2;
                if ($type =~ /^limit_(.+)/) {
                    $limithash{$item}{$1} = $env{$key};
                } else {
                    $confhash{$item}{$type} = $env{$key};
                }
            }
        } elsif ($context eq 'requestauthor') {
            if ($key =~ /^\Qform.authorreq_\E(.+)$/) {
                $confhash{$1} = $env{$key};
            }
        } else {
            if ($key =~ /^form\.quota_(.+)$/) {
                $confhash{'defaultquota'}{$1} = $env{$key};
            } elsif ($key =~ /^form\.authorquota_(.+)$/) {
                $confhash{'authorquota'}{$1} = $env{$key};
            } elsif ($key =~ /^form\.\Q$context\E_(.+)$/) {
                @{$toolshash{$1}} = &Apache::loncommon::get_env_multiple($key);
            }
        }
    }
    if (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
        my @approvalnotify = &Apache::loncommon::get_env_multiple('form.'.$context.'notifyapproval');
        @approvalnotify = sort(@approvalnotify);
        $confhash{'notify'}{'approval'} = join(',',@approvalnotify);
        my @crstypes = ('official','unofficial','community','textbook','placement','lti');
        my @hasuniquecode = &Apache::loncommon::get_env_multiple('form.uniquecode');
        foreach my $type (@hasuniquecode) {
            if (grep(/^\Q$type\E$/,@crstypes)) {
                $confhash{'uniquecode'}{$type} = 1;
            }
        }
        my (%newbook,%allpos);
        if ($context eq 'requestcourses') {
            foreach my $type ('textbooks','templates') {
                @{$allpos{$type}} = (); 
                my $invalid;
                if ($type eq 'textbooks') {
                    $invalid = &mt('Invalid LON-CAPA course for textbook');
                } else {
                    $invalid = &mt('Invalid LON-CAPA course for template');
                }
                if ($env{'form.'.$type.'_addbook'}) {
                    if (($env{'form.'.$type.'_addbook_cnum'} =~ /^$match_courseid$/) &&
                        ($env{'form.'.$type.'_addbook_cdom'} =~ /^$match_domain$/)) {
                        if (&Apache::lonnet::homeserver($env{'form.'.$type.'_addbook_cnum'},
                                                        $env{'form.'.$type.'_addbook_cdom'}) eq 'no_host') {
                            $errors .= '<li><span class="LC_error">'.$invalid.'</span></li>';
                        } else {
                            $newbook{$type} = $env{'form.'.$type.'_addbook_cdom'}.'_'.$env{'form.'.$type.'_addbook_cnum'};
                            my $position = $env{'form.'.$type.'_addbook_pos'};
                            $position =~ s/\D+//g;
                            if ($position ne '') {
                                $allpos{$type}[$position] = $newbook{$type};
                            }
                        }
                    } else {
                        $errors .= '<li><span class="LC_error">'.$invalid.'</span></li>';
                    }
                }
            } 
        }
        if (ref($domconfig{$action}) eq 'HASH') {
            if (ref($domconfig{$action}{'notify'}) eq 'HASH') {
                if ($domconfig{$action}{'notify'}{'approval'} ne $confhash{'notify'}{'approval'}) {
                    $changes{'notify'}{'approval'} = 1;
                }
            } else {
                if ($confhash{'notify'}{'approval'}) {
                    $changes{'notify'}{'approval'} = 1;
                }
            }
            if (ref($domconfig{$action}{'uniquecode'}) eq 'HASH') {
                if (ref($confhash{'uniquecode'}) eq 'HASH') {
                    foreach my $crstype (keys(%{$domconfig{$action}{'uniquecode'}})) {
                        unless ($confhash{'uniquecode'}{$crstype}) {
                            $changes{'uniquecode'} = 1;
                        }
                    }
                    unless ($changes{'uniquecode'}) {
                        foreach my $crstype (keys(%{$confhash{'uniquecode'}})) {
                            unless ($domconfig{$action}{'uniquecode'}{$crstype}) {
                                $changes{'uniquecode'} = 1;
                            }
                        }
                    }
               } else {
                   $changes{'uniquecode'} = 1;
               }
            } elsif (ref($confhash{'uniquecode'}) eq 'HASH') {
                $changes{'uniquecode'} = 1;
            }
            if ($context eq 'requestcourses') {
                foreach my $type ('textbooks','templates') {
                    if (ref($domconfig{$action}{$type}) eq 'HASH') {
                        my %deletions;
                        my @todelete = &Apache::loncommon::get_env_multiple('form.'.$type.'_del');
                        if (@todelete) {
                            map { $deletions{$_} = 1; } @todelete;
                        }
                        my %imgdeletions;
                        my @todeleteimages = &Apache::loncommon::get_env_multiple('form.'.$type.'_image_del');
                        if (@todeleteimages) {
                            map { $imgdeletions{$_} = 1; } @todeleteimages;
                        }
                        my $maxnum = $env{'form.'.$type.'_maxnum'};
                        for (my $i=0; $i<=$maxnum; $i++) {
                            my $itemid = $env{'form.'.$type.'_id_'.$i};
                            my ($key) = ($itemid =~ /^\Q$type\E_(\w+)$/); 
                            if (ref($domconfig{$action}{$type}{$key}) eq 'HASH') {
                                if ($deletions{$key}) {
                                    if ($domconfig{$action}{$type}{$key}{'image'}) {
                                        #FIXME need to obsolete item in RES space
                                    }
                                    next;
                                } else {
                                    my $newpos = $env{'form.'.$itemid};
                                    $newpos =~ s/\D+//g;
                                    foreach my $item ('subject','title','publisher','author') {
                                        next if ((($item eq 'author') || ($item eq 'publisher')) &&
                                                 ($type eq 'templates'));
                                        $confhash{$type}{$key}{$item} = $env{'form.'.$type.'_'.$item.'_'.$i};
                                        if ($domconfig{$action}{$type}{$key}{$item} ne $confhash{$type}{$key}{$item}) {
                                            $changes{$type}{$key} = 1;
                                        }
                                    }
                                    $allpos{$type}[$newpos] = $key;
                                }
                                if ($imgdeletions{$key}) {
                                    $changes{$type}{$key} = 1;
                                    #FIXME need to obsolete item in RES space
                                } elsif ($env{'form.'.$type.'_image_'.$i.'.filename'}) {
                                    my ($cdom,$cnum) = split(/_/,$key);
                                    if (&Apache::lonnet::homeserver($cnum,$cdom) eq 'no_host') {
                                        $errors .= '<li><span class="LC_error">'.&mt('Image not saved: could not find textbook course').'</li>';
                                    } else {
                                        my ($imgurl,$error) = &process_textbook_image($r,$dom,$confname,$type.'_image_'.$i,
                                                                                      $cdom,$cnum,$type,$configuserok,
                                                                                      $switchserver,$author_ok);
                                        if ($imgurl) {
                                            $confhash{$type}{$key}{'image'} = $imgurl;
                                            $changes{$type}{$key} = 1; 
                                        }
                                        if ($error) {
                                            &Apache::lonnet::logthis($error);
                                            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                                        }
                                    }
                                } elsif ($domconfig{$action}{$type}{$key}{'image'}) {
                                    $confhash{$type}{$key}{'image'} = 
                                        $domconfig{$action}{$type}{$key}{'image'};
                                }
                            }
                        }
                    }
                }
            }
        } else {
            if ($confhash{'notify'}{'approval'}) {
                $changes{'notify'}{'approval'} = 1;
            }
            if (ref($confhash{'uniquecode'} eq 'HASH')) {
                $changes{'uniquecode'} = 1;
            }
        }
        if ($context eq 'requestcourses') {
            foreach my $type ('textbooks','templates') {
                if ($newbook{$type}) {
                    $changes{$type}{$newbook{$type}} = 1;
                    foreach my $item ('subject','title','publisher','author') {
                        next if ((($item eq 'author') || ($item eq 'publisher')) &&
                                 ($type eq 'template'));
                        $env{'form.'.$type.'_addbook_'.$item} =~ s/(`)/'/g;
                        if ($env{'form.'.$type.'_addbook_'.$item}) {
                            $confhash{$type}{$newbook{$type}}{$item} = $env{'form.'.$type.'_addbook_'.$item};
                        }
                    }
                    if ($type eq 'textbooks') {
                        if ($env{'form.'.$type.'_addbook_image.filename'} ne '') {
                            my ($cdom,$cnum) = split(/_/,$newbook{$type});
                            if (&Apache::lonnet::homeserver($cnum,$cdom) eq 'no_host') {
                                $errors .= '<li><span class="LC_error">'.&mt('Image not saved: could not find textbook course').'</li>';
                            } else {
                                my ($imageurl,$error) =
                                    &process_textbook_image($r,$dom,$confname,$type.'_addbook_image',$cdom,$cnum,$type,
                                                            $configuserok,$switchserver,$author_ok);
                                if ($imageurl) {
                                    $confhash{$type}{$newbook{$type}}{'image'} = $imageurl;
                                }
                                if ($error) {
                                    &Apache::lonnet::logthis($error);
                                    $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                                }
                            }
                        }
                    }
                }
                if (@{$allpos{$type}} > 0) {
                    my $idx = 0;
                    foreach my $item (@{$allpos{$type}}) {
                        if ($item ne '') {
                            $confhash{$type}{$item}{'order'} = $idx;
                            if (ref($domconfig{$action}) eq 'HASH') {
                                if (ref($domconfig{$action}{$type}) eq 'HASH') {
                                    if (ref($domconfig{$action}{$type}{$item}) eq 'HASH') {
                                        if ($domconfig{$action}{$type}{$item}{'order'} ne $idx) {
                                            $changes{$type}{$item} = 1;
                                        }
                                    }
                                }
                            }
                            $idx ++;
                        }
                    }
                }
            }
            if (ref($validationitemsref) eq 'ARRAY') {
                foreach my $item (@{$validationitemsref}) {
                    if ($item eq 'fields') {
                        my @changed;
                        @{$confhash{'validation'}{$item}} = &Apache::loncommon::get_env_multiple('form.requestcourses_validation_'.$item);
                        if (@{$confhash{'validation'}{$item}} > 0) {
                            @{$confhash{'validation'}{$item}} = sort(@{$confhash{'validation'}{$item}});
                        }
                        if (ref($domconfig{'requestcourses'}) eq 'HASH') {
                            if (ref($domconfig{'requestcourses'}{'validation'}) eq 'HASH') {
                                if (ref($domconfig{'requestcourses'}{'validation'}{$item}) eq 'ARRAY') {
                                    @changed = &Apache::loncommon::compare_arrays($confhash{'validation'}{$item},
                                                                                  $domconfig{'requestcourses'}{'validation'}{$item});
                                } else {
                                    @changed = @{$confhash{'validation'}{$item}};
                                }
                            } else {
                                @changed = @{$confhash{'validation'}{$item}};
                            }
                        } else {
                            @changed = @{$confhash{'validation'}{$item}};
                        }
                        if (@changed) {
                            if ($confhash{'validation'}{$item}) {
                                $changes{'validation'}{$item} = join(', ',@{$confhash{'validation'}{$item}});
                            } else {
                                $changes{'validation'}{$item} = &mt('None');
                            }
                        }
                    } else {
                        $confhash{'validation'}{$item} = $env{'form.requestcourses_validation_'.$item};
                        if ($item eq 'markup') {
                            if ($env{'form.requestcourses_validation_'.$item}) {
                                $env{'form.requestcourses_validation_'.$item} =~ s/[\n\r\f]+/\s/gs;
                            }
                        }
                        if (ref($domconfig{'requestcourses'}) eq 'HASH') {
                            if (ref($domconfig{'requestcourses'}{'validation'}) eq 'HASH') {
                                if ($domconfig{'requestcourses'}{'validation'}{$item} ne $confhash{'validation'}{$item}) {
                                    $changes{'validation'}{$item} = $confhash{'validation'}{$item};
                                }
                            } else {
                                if ($confhash{'validation'}{$item} ne '') {
                                    $changes{'validation'}{$item} = $confhash{'validation'}{$item};
                                }
                            }
                        } else {
                            if ($confhash{'validation'}{$item} ne '') {
                                $changes{'validation'}{$item} = $confhash{'validation'}{$item};
                            }
                        }
                    }
                }
            }
            if ($env{'form.validationdc'}) {
                my $newval = $env{'form.validationdc'};
                my %domcoords = &Apache::lonnet::get_active_domroles($dom,['dc']);
                if (exists($domcoords{$newval})) {
                    $confhash{'validation'}{'dc'} = $newval;
                }
            }
            if (ref($confhash{'validation'}) eq 'HASH') {
                if (ref($domconfig{'requestcourses'}) eq 'HASH') {
                    if (ref($domconfig{'requestcourses'}{'validation'}) eq 'HASH') {
                        if ($domconfig{'requestcourses'}{'validation'}{'dc'}) {
                            unless ($confhash{'validation'}{'dc'} eq $domconfig{'requestcourses'}{'validation'}{'dc'}) {
                                if ($confhash{'validation'}{'dc'} eq '') {
                                    $changes{'validation'}{'dc'} = &mt('None');
                                } else {
                                    $changes{'validation'}{'dc'} = $confhash{'validation'}{'dc'};
                                }
                            }
                        } elsif ($confhash{'validation'}{'dc'} ne '') {
                            $changes{'validation'}{'dc'} = $confhash{'validation'}{'dc'};
                        }
                    } elsif ($confhash{'validation'}{'dc'} ne '') {
                        $changes{'validation'}{'dc'} = $confhash{'validation'}{'dc'};
                    }
                } elsif ($confhash{'validation'}{'dc'} ne '') {
                    $changes{'validation'}{'dc'} = $confhash{'validation'}{'dc'};
                }
            } else {
                if (ref($domconfig{'requestcourses'}) eq 'HASH') {
                    if (ref($domconfig{'requestcourses'}{'validation'}) eq 'HASH') {
                        if ($domconfig{'requestcourses'}{'validation'}{'dc'}) {
                            $changes{'validation'}{'dc'} = &mt('None');
                        }
                    }
                }
            }
        }
    } else {
        $confhash{'defaultquota'}{'default'} = $env{'form.defaultquota'};
        $confhash{'authorquota'}{'default'} = $env{'form.authorquota'};
    }
    foreach my $item (@usertools) {
        foreach my $type (@{$types},'default','_LC_adv') {
            my $unset; 
            if ($context eq 'requestcourses') {
                $unset = '0';
                if ($type eq '_LC_adv') {
                    $unset = '';
                }
                if ($confhash{$item}{$type} eq 'autolimit') {
                    $confhash{$item}{$type} .= '=';
                    unless ($limithash{$item}{$type} =~ /\D/) {
                        $confhash{$item}{$type} .= $limithash{$item}{$type};
                    }
                }
            } elsif ($context eq 'requestauthor') {
                $unset = '0';
                if ($type eq '_LC_adv') {
                    $unset = '';
                }
            } else {
                if (grep(/^\Q$type\E$/,@{$toolshash{$item}})) {
                    $confhash{$item}{$type} = 1;
                } else {
                    $confhash{$item}{$type} = 0;
                }
            }
            if (ref($domconfig{$action}) eq 'HASH') {
                if ($action eq 'requestauthor') {
                    if ($domconfig{$action}{$type} ne $confhash{$type}) {
                        $changes{$type} = 1;
                    }
                } elsif (ref($domconfig{$action}{$item}) eq 'HASH') {
                    if ($domconfig{$action}{$item}{$type} ne $confhash{$item}{$type}) {
                        $changes{$item}{$type} = 1;
                    }
                } else {
                    if ($context eq 'requestcourses') {
                        if ($confhash{$item}{$type} ne $unset) {
                            $changes{$item}{$type} = 1;
                        }
                    } else {
                        if (!$confhash{$item}{$type}) {
                            $changes{$item}{$type} = 1;
                        }
                    }
                }
            } else {
                if ($context eq 'requestcourses') {
                    if ($confhash{$item}{$type} ne $unset) {
                        $changes{$item}{$type} = 1;
                    }
                } elsif ($context eq 'requestauthor') {
                    if ($confhash{$type} ne $unset) {
                        $changes{$type} = 1;
                    }
                } else {
                    if (!$confhash{$item}{$type}) {
                        $changes{$item}{$type} = 1;
                    }
                }
            }
        }
    }
    unless (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
        if (ref($domconfig{'quotas'}) eq 'HASH') {
            if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
                foreach my $key (keys(%{$domconfig{'quotas'}{'defaultquota'}})) {
                    if (exists($confhash{'defaultquota'}{$key})) {
                        if ($confhash{'defaultquota'}{$key} ne $domconfig{'quotas'}{'defaultquota'}{$key}) {
                            $changes{'defaultquota'}{$key} = 1;
                        }
                    } else {
                        $confhash{'defaultquota'}{$key} = $domconfig{'quotas'}{'defaultquota'}{$key};
                    }
                }
            } else {
                foreach my $key (keys(%{$domconfig{'quotas'}})) {
                    if (exists($confhash{'defaultquota'}{$key})) {
                        if ($confhash{'defaultquota'}{$key} ne $domconfig{'quotas'}{$key}) {
                            $changes{'defaultquota'}{$key} = 1;
                        }
                    } else {
                        $confhash{'defaultquota'}{$key} = $domconfig{'quotas'}{$key};
                    }
                }
            }
            if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
                foreach my $key (keys(%{$domconfig{'quotas'}{'authorquota'}})) {
                    if (exists($confhash{'authorquota'}{$key})) {
                        if ($confhash{'authorquota'}{$key} ne $domconfig{'quotas'}{'authorquota'}{$key}) {
                            $changes{'authorquota'}{$key} = 1;
                        }
                    } else {
                        $confhash{'authorquota'}{$key} = $domconfig{'quotas'}{'authorquota'}{$key};
                    }
                }
            }
        }
        if (ref($confhash{'defaultquota'}) eq 'HASH') {
            foreach my $key (keys(%{$confhash{'defaultquota'}})) {
                if (ref($domconfig{'quotas'}) eq 'HASH') {
                    if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
                        if (!exists($domconfig{'quotas'}{'defaultquota'}{$key})) {
                            $changes{'defaultquota'}{$key} = 1;
                        }
                    } else {
                        if (!exists($domconfig{'quotas'}{$key})) {
                            $changes{'defaultquota'}{$key} = 1;
                        }
                    }
                } else {
                    $changes{'defaultquota'}{$key} = 1;
                }
            }
        }
        if (ref($confhash{'authorquota'}) eq 'HASH') {
            foreach my $key (keys(%{$confhash{'authorquota'}})) {
                if (ref($domconfig{'quotas'}) eq 'HASH') {
                    if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
                        if (!exists($domconfig{'quotas'}{'authorquota'}{$key})) {
                            $changes{'authorquota'}{$key} = 1;
                        }
                    } else {
                        $changes{'authorquota'}{$key} = 1;
                    }
                } else {
                    $changes{'authorquota'}{$key} = 1;
                }
            }
        }
    }

    if ($context eq 'requestauthor') {
        $domdefaults{'requestauthor'} = \%confhash;
    } else {
        foreach my $key (keys(%confhash)) {
            unless (($context eq 'requestcourses') && (($key eq 'textbooks') || ($key eq 'templates'))) {
                $domdefaults{$key} = $confhash{$key};
            }
        }
    }

    my %quotahash = (
                      $action => { %confhash }
                    );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%quotahash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            my $cachetime = 24*60*60;
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
            $resulttext = &mt('Changes made:').'<ul>';
            unless (($context eq 'requestcourses') ||
                    ($context eq 'requestauthor')) {
                if (ref($changes{'defaultquota'}) eq 'HASH') {
                    $resulttext .= '<li>'.&mt('Portfolio default quotas').'<ul>';
                    foreach my $type (@{$types},'default') {
                        if (defined($changes{'defaultquota'}{$type})) {
                            my $typetitle = $usertypes->{$type};
                            if ($type eq 'default') {
                                $typetitle = $othertitle;
                            }
                            $resulttext .= '<li>'.&mt('[_1] set to [_2] MB',$typetitle,$confhash{'defaultquota'}{$type}).'</li>';
                        }
                    }
                    $resulttext .= '</ul></li>';
                }
                if (ref($changes{'authorquota'}) eq 'HASH') {
                    $resulttext .= '<li>'.&mt('Authoring Space default quotas').'<ul>';
                    foreach my $type (@{$types},'default') {
                        if (defined($changes{'authorquota'}{$type})) {
                            my $typetitle = $usertypes->{$type};
                            if ($type eq 'default') {
                                $typetitle = $othertitle;
                            }
                            $resulttext .= '<li>'.&mt('[_1] set to [_2] MB',$typetitle,$confhash{'authorquota'}{$type}).'</li>';
                        }
                    }
                    $resulttext .= '</ul></li>';
                }
            }
            my %newenv;
            foreach my $item (@usertools) {
                my (%haschgs,%inconf);
                if ($context eq 'requestauthor') {
                    %haschgs = %changes;
                    %inconf = %confhash;
                } else {
                    if (ref($changes{$item}) eq 'HASH') {
                        %haschgs = %{$changes{$item}};
                    }
                    if (ref($confhash{$item}) eq 'HASH') {
                        %inconf = %{$confhash{$item}};
                    }
                }
                if (keys(%haschgs) > 0) {
                    my $newacc = 
                        &Apache::lonnet::usertools_access($env{'user.name'},
                                                          $env{'user.domain'},
                                                          $item,'reload',$context);
                    if (($context eq 'requestcourses') ||
                        ($context eq 'requestauthor')) {
                        if ($env{'environment.canrequest.'.$item} ne $newacc) {
                            $newenv{'environment.canrequest.'.$item} = $newacc;
                        }
                    } else {
                        if ($env{'environment.availabletools.'.$item} ne $newacc) { 
                            $newenv{'environment.availabletools.'.$item} = $newacc;
                        }
                    }
                    unless ($context eq 'requestauthor') {
                        $resulttext .= '<li>'.$titles{$item}.'<ul>';
                    }
                    foreach my $type (@{$types},'default','_LC_adv') {
                        if ($haschgs{$type}) {
                            my $typetitle = $usertypes->{$type};
                            if ($type eq 'default') {
                                $typetitle = $othertitle;
                            } elsif ($type eq '_LC_adv') {
                                $typetitle = 'LON-CAPA Advanced Users'; 
                            }
                            if ($inconf{$type}) {
                                if ($context eq 'requestcourses') {
                                    my $cond;
                                    if ($inconf{$type} =~ /^autolimit=(\d*)$/) {
                                        if ($1 eq '') {
                                            $cond = &mt('(Automatic processing of any request).');
                                        } else {
                                            $cond = &mt('(Automatic processing of requests up to limit of [quant,_1,request] per user).',$1);
                                        }
                                    } else { 
                                        $cond = $conditions{$inconf{$type}};
                                    }
                                    $resulttext .= '<li>'.&mt('Set to be available to [_1].',$typetitle).' '.$cond.'</li>';
                                } elsif ($context eq 'requestauthor') {
                                    $resulttext .= '<li>'.&mt('Set to "[_1]" for "[_2]".',
                                                             $titles{$inconf{$type}},$typetitle);

                                } else {
                                    $resulttext .= '<li>'.&mt('Set to be available to [_1]',$typetitle).'</li>';
                                }
                            } else {
                                if ($type eq '_LC_adv') {
                                    if ($inconf{$type} eq '0') {
                                        $resulttext .= '<li>'.&mt('Set to be unavailable to [_1]',$typetitle).'</li>';
                                    } else { 
                                        $resulttext .= '<li>'.&mt('No override set for [_1]',$typetitle).'</li>';
                                    }
                                } else {
                                    $resulttext .= '<li>'.&mt('Set to be unavailable to [_1]',$typetitle).'</li>';
                                }
                            }
                        }
                    }
                    unless ($context eq 'requestauthor') {
                        $resulttext .= '</ul></li>';
                    }
                }
            }
            if (($action eq 'requestcourses') || ($action eq 'requestauthor')) {
                if (ref($changes{'notify'}) eq 'HASH') {
                    if ($changes{'notify'}{'approval'}) {
                        if (ref($confhash{'notify'}) eq 'HASH') {
                            if ($confhash{'notify'}{'approval'}) {
                                $resulttext .= '<li>'.&mt('Notification of requests requiring approval will be sent to: ').$confhash{'notify'}{'approval'}.'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('No Domain Coordinators will receive notification of requests requiring approval.').'</li>';
                            }
                        }
                    }
                }
            }
            if ($action eq 'requestcourses') {
                my @offon = ('off','on');
                if ($changes{'uniquecode'}) {
                    if (ref($confhash{'uniquecode'}) eq 'HASH') {
                        my $codestr = join(' ',map{ &mt($_); } sort(keys(%{$confhash{'uniquecode'}})));
                        $resulttext .= '<li>'.
                                       &mt('Generation of six character code as course identifier for distribution to students set to on for: [_1].','<b>'.$codestr.'</b>').
                                       '</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Generation of six character code as course identifier for distribution to students set to off.').
                                       '</li>';
                    }
                }
                foreach my $type ('textbooks','templates') {
                    if (ref($changes{$type}) eq 'HASH') {
                        $resulttext .= '<li>'.&mt("Available $type updated").'<ul>';
                        foreach my $key (sort(keys(%{$changes{$type}}))) {
                            my %coursehash = &Apache::lonnet::coursedescription($key);
                            my $coursetitle = $coursehash{'description'};
                            my $position = $confhash{$type}{$key}{'order'} + 1;
                            $resulttext .= '<li>';
                            foreach my $item ('subject','title','publisher','author') {
                                next if ((($item eq 'author') || ($item eq 'publisher')) &&
                                         ($type eq 'templates'));
                                my $name = $item.':';
                                $name =~ s/^(\w)/\U$1/;
                                $resulttext .= &mt($name).' '.$confhash{$type}{$key}{$item}.'<br />';
                            }
                            $resulttext .= ' '.&mt('Order: [_1]',$position).'<br />';
                            if ($type eq 'textbooks') {
                                if ($confhash{$type}{$key}{'image'}) {
                                    $resulttext .= ' '.&mt('Image: [_1]',
                                                   '<img src="'.$confhash{$type}{$key}{'image'}.'"'.
                                                   ' alt="Textbook cover" />').'<br />';
                                }
                            }
                            $resulttext .= ' '.&mt('LON-CAPA Course: [_1]',$coursetitle).'</li>';
                        }
                        $resulttext .= '</ul></li>';
                    }
                }
                if (ref($changes{'validation'}) eq 'HASH') {
                    if ((ref($validationitemsref) eq 'ARRAY') && (ref($validationnamesref) eq 'HASH')) {
                        $resulttext .= '<li>'.&mt('Validation of courses/communities updated').'<ul>';
                        foreach my $item (@{$validationitemsref}) {
                            if (exists($changes{'validation'}{$item})) {
                                if ($item eq 'markup') {
                                    $resulttext .= '<li>'.&mt('[_1] set to: [_2]',$validationnamesref->{$item},
                                                              '<br /><pre>'.$changes{'validation'}{$item}.'</pre>').'</li>';
                                } else {
                                    $resulttext .= '<li>'.&mt('[_1] set to: [_2]',$validationnamesref->{$item},
                                                              '<b>'.$changes{'validation'}{$item}.'</b>').'</li>';
                                }
                            }
                        }
                        if (exists($changes{'validation'}{'dc'})) {
                            $resulttext .= '<li>'.&mt('Validated course requests identified as processed by: [_1]',
                                                     '<b>'.$changes{'validation'}{'dc'}.'</b>').'</li>';
                        }
                    }
                }
            }
            $resulttext .= '</ul>';
            if (keys(%newenv)) {
                &Apache::lonnet::appenv(\%newenv);
            }
        } else {
            if ($context eq 'requestcourses') {
                $resulttext = &mt('No changes made to rights to request creation of courses.');
            } elsif ($context eq 'requestauthor') {
                $resulttext = &mt('No changes made to rights to request author space.');
            } else {
                $resulttext = &mt('No changes made to availability of personal information pages, blogs, portfolios or default quotas');
            }
        }
    } else {
        $resulttext = '<span class="LC_error">'.
	    &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if ($errors) {
        $resulttext .= '<p>'.&mt('The following errors occurred when modifying Textbook settings.').
                       '<ul>'.$errors.'</ul></p>';
    }
    return $resulttext;
}

sub process_textbook_image {
    my ($r,$dom,$confname,$caller,$cdom,$cnum,$type,$configuserok,$switchserver,$author_ok) = @_;
    my $filename = $env{'form.'.$caller.'.filename'};
    my ($error,$url);
    my ($width,$height) = (50,50);
    if ($configuserok eq 'ok') {
        if ($switchserver) {
            $error = &mt('Upload of textbook image is not permitted to this server: [_1]',
                         $switchserver);
        } elsif ($author_ok eq 'ok') {
            my ($result,$imageurl) =
                &publishlogo($r,'upload',$caller,$dom,$confname,
                             "$type/$cdom/$cnum/cover",$width,$height);
            if ($result eq 'ok') {
                $url = $imageurl;
            } else {
                $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$filename,$result);
            }
        } else {
            $error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$author_ok);
        }
    } else {
        $error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$configuserok);
    }
    return ($url,$error);
}

sub modify_ltitools {
    my ($r,$dom,$action,$lastactref,%domconfig) = @_;
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my ($newid,@allpos,%changes,%confhash,%encconfig,$errors,$resulttext);
    my $confname = $dom.'-domainconfig';
    my $servadm = $r->dir_config('lonAdmEMail');
    my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
    my (%posslti,%possfield);
    my @courseroles = ('cc','in','ta','ep','st');
    my @ltiroles = qw(Instructor ContentDeveloper TeachingAssistant Learner);
    map { $posslti{$_} = 1; } @ltiroles;
    my @allfields = ('fullname','firstname','lastname','email','user','roles');
    map { $possfield{$_} = 1; } @allfields;
    my %lt = &ltitools_names(); 
    if ($env{'form.ltitools_add'}) {
        my $title = $env{'form.ltitools_add_title'};
        $title =~ s/(`)/'/g;
        ($newid,my $error) = &get_ltitools_id($dom,$title);
        if ($newid) {
            my $position = $env{'form.ltitools_add_pos'};
            $position =~ s/\D+//g;
            if ($position ne '') {
                $allpos[$position] = $newid;
            }
            $changes{$newid} = 1;
            foreach my $item ('title','url','key','secret','lifetime') {
                $env{'form.ltitools_add_'.$item} =~ s/(`)/'/g;
                if ($item eq 'lifetime') {
                    $env{'form.ltitools_add_'.$item} =~ s/[^\d.]//g;
                }
                if ($env{'form.ltitools_add_'.$item}) {
                    if (($item eq 'key') || ($item eq 'secret')) {
                        $encconfig{$newid}{$item} = $env{'form.ltitools_add_'.$item};
                    } else {
                        $confhash{$newid}{$item} = $env{'form.ltitools_add_'.$item};
                    }
                }
            }
            if ($env{'form.ltitools_add_version'} eq 'LTI-1p0') {
                $confhash{$newid}{'version'} = $env{'form.ltitools_add_version'};
            }
            if ($env{'form.ltitools_add_msgtype'} eq 'basic-lti-launch-request') {
                $confhash{$newid}{'msgtype'} = $env{'form.ltitools_add_msgtype'};
            }
            if ($env{'form.ltitools_add_sigmethod'} eq 'HMAC-SHA256') {
                $confhash{$newid}{'sigmethod'} = $env{'form.ltitools_add_sigmethod'};
            } else {
                $confhash{$newid}{'sigmethod'} = 'HMAC-SHA1';
            }
            foreach my $item ('width','height','linktext','explanation') {
                $env{'form.ltitools_add_'.$item} =~ s/^\s+//;
                $env{'form.ltitools_add_'.$item} =~ s/\s+$//;
                if (($item eq 'width') || ($item eq 'height')) {
                    if ($env{'form.ltitools_add_'.$item} =~ /^\d+$/) {
                        $confhash{$newid}{'display'}{$item} = $env{'form.ltitools_add_'.$item};
                    }
                } else {
                    if ($env{'form.ltitools_add_'.$item} ne '') {
                        $confhash{$newid}{'display'}{$item} = $env{'form.ltitools_add_'.$item}; 
                    }
                }
            }
            if ($env{'form.ltitools_add_target'} eq 'window') {
                $confhash{$newid}{'display'}{'target'} = $env{'form.ltitools_add_target'};
            } elsif ($env{'form.ltitools_add_target'} eq 'tab') {
                $confhash{$newid}{'display'}{'target'} = $env{'form.ltitools_add_target'};
            } else {
                $confhash{$newid}{'display'}{'target'} = 'iframe';
            }
            foreach my $item ('passback','roster') {
                if ($env{'form.ltitools_'.$item.'_add'}) {
                    $confhash{$newid}{$item} = 1;
                    if ($env{'form.ltitools_'.$item.'valid_add'} ne '') {
                        my $lifetime = $env{'form.ltitools_'.$item.'valid_add'};
                        $lifetime =~ s/^\s+|\s+$//g;
                        if ($lifetime =~ /^\d+\.?\d*$/) {
                            $confhash{$newid}{$item.'valid'} = $lifetime;
                        }
                    }
                }
            }
            if ($env{'form.ltitools_add_image.filename'} ne '') {
                my ($imageurl,$error) =
                    &process_ltitools_image($r,$dom,$confname,'ltitools_add_image',$newid,
                                            $configuserok,$switchserver,$author_ok);
                if ($imageurl) {
                    $confhash{$newid}{'image'} = $imageurl;
                }
                if ($error) {
                    &Apache::lonnet::logthis($error);
                    $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                }
            }
            my @fields = &Apache::loncommon::get_env_multiple('form.ltitools_add_fields');
            foreach my $field (@fields) {
                if ($possfield{$field}) {
                    if ($field eq 'roles') {
                        foreach my $role (@courseroles) {
                            my $choice = $env{'form.ltitools_add_roles_'.$role};
                            if (($choice ne '') && ($posslti{$choice})) {
                                $confhash{$newid}{'roles'}{$role} = $choice;
                                if ($role eq 'cc') {
                                    $confhash{$newid}{'roles'}{'co'} = $choice; 
                                }
                            }
                        }
                    } else {
                        $confhash{$newid}{'fields'}{$field} = 1;
                    }
                }
            }
            if (ref($confhash{$newid}{'fields'}) eq 'HASH') {
                if ($confhash{$newid}{'fields'}{'user'}) {
                    if ($env{'form.ltitools_userincdom_add'}) {
                        $confhash{$newid}{'incdom'} = 1;
                    }
                }
            }
            my @courseconfig = &Apache::loncommon::get_env_multiple('form.ltitools_courseconfig');
            foreach my $item (@courseconfig) {
                $confhash{$newid}{'crsconf'}{$item} = 1;
            }
            if ($env{'form.ltitools_add_custom'}) {
                my $name = $env{'form.ltitools_add_custom_name'};
                my $value = $env{'form.ltitools_add_custom_value'};
                $value =~ s/(`)/'/g;
                $name =~ s/(`)/'/g;
                $confhash{$newid}{'custom'}{$name} = $value;
            }
        } else {
            my $error = &mt('Failed to acquire unique ID for new external tool');   
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }
    if (ref($domconfig{$action}) eq 'HASH') {
        my %deletions;
        my @todelete = &Apache::loncommon::get_env_multiple('form.ltitools_del');
        if (@todelete) {
            map { $deletions{$_} = 1; } @todelete;
        }
        my %customadds;
        my @newcustom = &Apache::loncommon::get_env_multiple('form.ltitools_customadd');
        if (@newcustom) {
            map { $customadds{$_} = 1; } @newcustom;
        } 
        my %imgdeletions;
        my @todeleteimages = &Apache::loncommon::get_env_multiple('form.ltitools_image_del');
        if (@todeleteimages) {
            map { $imgdeletions{$_} = 1; } @todeleteimages;
        }
        my $maxnum = $env{'form.ltitools_maxnum'};
        for (my $i=0; $i<=$maxnum; $i++) {
            my $itemid = $env{'form.ltitools_id_'.$i};
            $itemid =~ s/\D+//g;
            if (ref($domconfig{$action}{$itemid}) eq 'HASH') {
                if ($deletions{$itemid}) {
                    if ($domconfig{$action}{$itemid}{'image'}) {
                        #FIXME need to obsolete item in RES space
                    }
                    $changes{$itemid} = $domconfig{$action}{$itemid}{'title'};
                    next;
                } else {
                    my $newpos = $env{'form.ltitools_'.$itemid};
                    $newpos =~ s/\D+//g;
                    foreach my $item ('title','url','lifetime') {
                        $confhash{$itemid}{$item} = $env{'form.ltitools_'.$item.'_'.$i};
                        if ($domconfig{$action}{$itemid}{$item} ne $confhash{$itemid}{$item}) {
                            $changes{$itemid} = 1;
                        }
                    }
                    foreach my $item ('key','secret') {
                        $encconfig{$itemid}{$item} = $env{'form.ltitools_'.$item.'_'.$i};
                        if ($domconfig{$action}{$itemid}{$item} ne $encconfig{$itemid}{$item}) {
                            $changes{$itemid} = 1;
                        }
                    }
                    if ($env{'form.ltitools_version_'.$i} eq 'LTI-1p0') {
                        $confhash{$itemid}{'version'} = $env{'form.ltitools_version_'.$i};
                    }
                    if ($env{'form.ltitools_msgtype_'.$i} eq 'basic-lti-launch-request') {
                        $confhash{$itemid}{'msgtype'} = $env{'form.ltitools_msgtype_'.$i};
                    }
                    if ($env{'form.ltitools_sigmethod_'.$i} eq 'HMAC-SHA256') {
                        $confhash{$itemid}{'sigmethod'} = $env{'form.ltitools_sigmethod_'.$i};
                    } else {
                        $confhash{$itemid}{'sigmethod'} = 'HMAC-SHA1'; 
                    }
                    if ($domconfig{$action}{$itemid}{'sigmethod'} eq '') {
                        if ($confhash{$itemid}{'sigmethod'} ne 'HMAC-SHA1') {
                            $changes{$itemid} = 1;
                        }
                    } elsif ($domconfig{$action}{$itemid}{'sigmethod'} ne $confhash{$itemid}{'sigmethod'}) {
                        $changes{$itemid} = 1;
                    }
                    foreach my $size ('width','height') {
                        $env{'form.ltitools_'.$size.'_'.$i} =~ s/^\s+//;
                        $env{'form.ltitools_'.$size.'_'.$i} =~ s/\s+$//;
                        if ($env{'form.ltitools_'.$size.'_'.$i} =~ /^\d+$/) {
                            $confhash{$itemid}{'display'}{$size} = $env{'form.ltitools_'.$size.'_'.$i};
                            if (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
                                if ($domconfig{$action}{$itemid}{'display'}{$size} ne $confhash{$itemid}{'display'}{$size}) {
                                    $changes{$itemid} = 1;
                                }
                            } else {
                                $changes{$itemid} = 1;
                            }
                        } elsif (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
                            if ($domconfig{$action}{$itemid}{'display'}{$size} ne '') {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                    foreach my $item ('linktext','explanation') {
                        $env{'form.ltitools_'.$item.'_'.$i} =~ s/^\s+//;
                        $env{'form.ltitools_'.$item.'_'.$i} =~ s/\s+$//;
                        if ($env{'form.ltitools_'.$item.'_'.$i} ne '') {
                            $confhash{$itemid}{'display'}{$item} = $env{'form.ltitools_'.$item.'_'.$i};
                            if (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
                                if ($domconfig{$action}{$itemid}{'display'}{$item} ne $confhash{$itemid}{'display'}{$item}) {
                                    $changes{$itemid} = 1;
                                }
                            } else {
                                $changes{$itemid} = 1;
                            }
                        } elsif (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
                            if ($domconfig{$action}{$itemid}{'display'}{$item} ne '') {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                    if ($env{'form.ltitools_target_'.$i} eq 'window') {
                        $confhash{$itemid}{'display'}{'target'} = $env{'form.ltitools_target_'.$i};
                    } elsif ($env{'form.ltitools_target_'.$i} eq 'tab') {
                        $confhash{$itemid}{'display'}{'target'} = $env{'form.ltitools_target_'.$i};
                    } else {
                        $confhash{$itemid}{'display'}{'target'} = 'iframe';
                    }
                    if (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
                        if ($domconfig{$action}{$itemid}{'display'}{'target'} ne $confhash{$itemid}{'display'}{'target'}) {
                            $changes{$itemid} = 1;
                        }
                    } else {
                        $changes{$itemid} = 1;
                    }
                    foreach my $extra ('passback','roster') {
                        if ($env{'form.ltitools_'.$extra.'_'.$i}) {
                            $confhash{$itemid}{$extra} = 1;
                            if ($env{'form.ltitools_'.$extra.'valid_'.$i} ne '') {
                                my $lifetime = $env{'form.ltitools_'.$extra.'valid_'.$i};
                                $lifetime =~ s/^\s+|\s+$//g;
                                if ($lifetime =~ /^\d+\.?\d*$/) {
                                    $confhash{$itemid}{$extra.'valid'} = $lifetime;
                                }
                            }
                        }
                        if ($domconfig{$action}{$itemid}{$extra} ne $confhash{$itemid}{$extra}) {
                            $changes{$itemid} = 1;
                        }
                        if ($domconfig{$action}{$itemid}{$extra.'valid'} ne $confhash{$itemid}{$extra.'valid'}) {
                            $changes{$itemid} = 1;
                        }
                    }
                    my @courseconfig = &Apache::loncommon::get_env_multiple('form.ltitools_courseconfig_'.$i);
                    foreach my $item ('label','title','target','linktext','explanation','append') {
                        if (grep(/^\Q$item\E$/,@courseconfig)) {
                            $confhash{$itemid}{'crsconf'}{$item} = 1;
                            if (ref($domconfig{$action}{$itemid}{'crsconf'}) eq 'HASH') {
                                if ($domconfig{$action}{$itemid}{'crsconf'}{$item} ne $confhash{$itemid}{'crsconf'}{$item}) {
                                    $changes{$itemid} = 1;
                                }
                            } else {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                    my @fields = &Apache::loncommon::get_env_multiple('form.ltitools_fields_'.$i);
                    foreach my $field (@fields) {
                        if ($possfield{$field}) {
                            if ($field eq 'roles') {
                                foreach my $role (@courseroles) {
                                    my $choice = $env{'form.ltitools_roles_'.$role.'_'.$i};
                                    if (($choice ne '') && ($posslti{$choice})) {
                                        $confhash{$itemid}{'roles'}{$role} = $choice;
                                        if ($role eq 'cc') {
                                            $confhash{$itemid}{'roles'}{'co'} = $choice;
                                        }
                                    }
                                    if (ref($domconfig{$action}{$itemid}{'roles'}) eq 'HASH') {
                                        if ($domconfig{$action}{$itemid}{'roles'}{$role} ne $confhash{$itemid}{'roles'}{$role}) {
                                            $changes{$itemid} = 1;
                                        }
                                    } elsif ($confhash{$itemid}{'roles'}{$role}) {
                                        $changes{$itemid} = 1;
                                    }
                                }
                            } else {
                                $confhash{$itemid}{'fields'}{$field} = 1;
                                if (ref($domconfig{$action}{$itemid}{'fields'}) eq 'HASH') {
                                    if ($domconfig{$action}{$itemid}{'fields'}{$field} ne $confhash{$itemid}{'fields'}{$field}) {
                                        $changes{$itemid} = 1;
                                    }
                                } else {
                                    $changes{$itemid} = 1;
                                }
                            }
                        }
                    }
                    if (ref($confhash{$itemid}{'fields'}) eq 'HASH') {
                        if ($confhash{$itemid}{'fields'}{'user'}) {
                            if ($env{'form.ltitools_userincdom_'.$i}) {
                                $confhash{$itemid}{'incdom'} = 1;
                            }
                            if ($domconfig{$action}{$itemid}{'incdom'} ne $confhash{$itemid}{'incdom'}) {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                    $allpos[$newpos] = $itemid;
                }
                if ($imgdeletions{$itemid}) {
                    $changes{$itemid} = 1;
                    #FIXME need to obsolete item in RES space
                } elsif ($env{'form.ltitools_image_'.$i.'.filename'}) {
                    my ($imgurl,$error) = &process_ltitools_image($r,$dom,$confname,'ltitools_image_'.$i,
                                                                 $itemid,$configuserok,$switchserver,
                                                                 $author_ok);
                    if ($imgurl) {
                        $confhash{$itemid}{'image'} = $imgurl;
                        $changes{$itemid} = 1;
                    }
                    if ($error) {
                        &Apache::lonnet::logthis($error);
                        $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                    }
                } elsif ($domconfig{$action}{$itemid}{'image'}) {
                    $confhash{$itemid}{'image'} =
                       $domconfig{$action}{$itemid}{'image'};
                }
                if ($customadds{$i}) {
                    my $name = $env{'form.ltitools_custom_name_'.$i};
                    $name =~ s/(`)/'/g;
                    $name =~ s/^\s+//;
                    $name =~ s/\s+$//;
                    my $value = $env{'form.ltitools_custom_value_'.$i};
                    $value =~ s/(`)/'/g;
                    $value =~ s/^\s+//;
                    $value =~ s/\s+$//;
                    if ($name ne '') {
                        $confhash{$itemid}{'custom'}{$name} = $value;
                        $changes{$itemid} = 1;
                    }
                }
                my %customdels;
                my @customdeletions = &Apache::loncommon::get_env_multiple('form.ltitools_customdel_'.$i); 
                if (@customdeletions) {
                    $changes{$itemid} = 1;
                }
                map { $customdels{$_} = 1; } @customdeletions;
                if (ref($domconfig{$action}{$itemid}{'custom'}) eq 'HASH') {
                    foreach my $key (keys(%{$domconfig{$action}{$itemid}{'custom'}})) {
                        unless ($customdels{$key}) {
                            if ($env{'form.ltitools_customval_'.$key.'_'.$i} ne '') {
                                $confhash{$itemid}{'custom'}{$key} = $env{'form.ltitools_customval_'.$key.'_'.$i}; 
                            }
                            if ($domconfig{$action}{$itemid}{'custom'}{$key} ne $env{'form.ltitools_customval_'.$key.'_'.$i}) {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                }
                unless ($changes{$itemid}) {
                    foreach my $key (keys(%{$domconfig{$action}{$itemid}})) {
                        if (ref($domconfig{$action}{$itemid}{$key}) eq 'HASH') {
                            if (ref($confhash{$itemid}{$key}) eq 'HASH') {
                                foreach my $innerkey (keys(%{$domconfig{$action}{$itemid}{$key}})) {
                                    unless (exists($confhash{$itemid}{$key}{$innerkey})) {
                                        $changes{$itemid} = 1;
                                        last;
                                    }
                                }
                            } elsif (keys(%{$domconfig{$action}{$itemid}{$key}}) > 0) {
                                $changes{$itemid} = 1;
                            }
                        }
                        last if ($changes{$itemid});
                    }
                }
            }
        }
    }
    if (@allpos > 0) {
        my $idx = 0;
        foreach my $itemid (@allpos) {
            if ($itemid ne '') {
                $confhash{$itemid}{'order'} = $idx;
                if (ref($domconfig{$action}) eq 'HASH') {
                    if (ref($domconfig{$action}{$itemid}) eq 'HASH') {
                        if ($domconfig{$action}{$itemid}{'order'} ne $idx) {
                            $changes{$itemid} = 1;
                        }
                    }
                }
                $idx ++;
            }
        }
    }
    my %ltitoolshash = (
                          $action => { %confhash }
                       );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%ltitoolshash,
                                             $dom);
    if ($putresult eq 'ok') {
        my %ltienchash = (
                             $action => { %encconfig }
                         );
        &Apache::lonnet::put_dom('encconfig',\%ltienchash,$dom,undef,1);
        if (keys(%changes) > 0) {
            my $cachetime = 24*60*60;
            my %ltiall = %confhash;
            foreach my $id (keys(%ltiall)) {
                if (ref($encconfig{$id}) eq 'HASH') {
                    foreach my $item ('key','secret') {
                        $ltiall{$id}{$item} = $encconfig{$id}{$item};
                    }
                }
            }
            &Apache::lonnet::do_cache_new('ltitools',$dom,\%ltiall,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'ltitools'} = 1;
            }
            $resulttext = &mt('Changes made:').'<ul>';
            my %bynum;
            foreach my $itemid (sort(keys(%changes))) {
                my $position = $confhash{$itemid}{'order'};
                $bynum{$position} = $itemid;
            }
            foreach my $pos (sort { $a <=> $b } keys(%bynum)) {
                my $itemid = $bynum{$pos}; 
                if (ref($confhash{$itemid}) ne 'HASH') {
                    $resulttext .= '<li>'.&mt('Deleted: [_1]',$changes{$itemid}).'</li>';
                } else {
                    $resulttext .= '<li><b>'.$confhash{$itemid}{'title'}.'</b>';
                    if ($confhash{$itemid}{'image'}) {
                        $resulttext .= '&nbsp;'.
                                       '<img src="'.$confhash{$itemid}{'image'}.'"'.
                                       ' alt="'.&mt('Tool Provider icon').'" />';
                    }
                    $resulttext .= '</li><ul>';
                    my $position = $pos + 1;
                    $resulttext .= '<li>'.&mt('Order: [_1]',$position).'</li>';
                    foreach my $item ('version','msgtype','sigmethod','url','lifetime') {
                        if ($confhash{$itemid}{$item} ne '') {
                            $resulttext .= '<li>'.$lt{$item}.':&nbsp;'.$confhash{$itemid}{$item}.'</li>';
                        }
                    }
                    if ($encconfig{$itemid}{'key'} ne '') {
                        $resulttext .= '<li>'.$lt{'key'}.':&nbsp;'.$encconfig{$itemid}{'key'}.'</li>';
                    }
                    if ($encconfig{$itemid}{'secret'} ne '') {
                        $resulttext .= '<li>'.$lt{'secret'}.':&nbsp;';
                        my $num = length($encconfig{$itemid}{'secret'});
                        $resulttext .= ('*'x$num).'</li>';
                    }
                    $resulttext .= '<li>'.&mt('Configurable in course:');
                    my @possconfig = ('label','title','target','linktext','explanation','append');
                    my $numconfig = 0; 
                    if (ref($confhash{$itemid}{'crsconf'}) eq 'HASH') { 
                        foreach my $item (@possconfig) {
                            if ($confhash{$itemid}{'crsconf'}{$item}) {
                                $numconfig ++;
                                $resulttext .= ' "'.$lt{'crs'.$item}.'"';
                            }
                        }
                    }
                    if (!$numconfig) {
                        $resulttext .= '&nbsp;'.&mt('None');
                    }
                    $resulttext .= '</li>';
                    foreach my $item ('passback','roster') {
                        $resulttext .= '<li>'.$lt{$item}.'&nbsp;';
                        if ($confhash{$itemid}{$item}) {
                            $resulttext .= &mt('Yes');
                            if ($confhash{$itemid}{$item.'valid'}) {
                                if ($item eq 'passback') {
                                    $resulttext .= ' '.&mt('valid for at least [quant,_1,day] after launch',
                                                           $confhash{$itemid}{$item.'valid'});
                                } else {
                                    $resulttext .= ' '.&mt('valid for at least [quant,_1,second] after launch',
                                                           $confhash{$itemid}{$item.'valid'});
                                }
                            }
                        } else {
                            $resulttext .= &mt('No');
                        }
                        $resulttext .= '</li>';
                    }
                    if (ref($confhash{$itemid}{'display'}) eq 'HASH') {
                        my $displaylist;
                        if ($confhash{$itemid}{'display'}{'target'}) {
                            $displaylist = &mt('Display target').':&nbsp;'.
                                           $confhash{$itemid}{'display'}{'target'}.',';
                        }
                        foreach my $size ('width','height') { 
                            if ($confhash{$itemid}{'display'}{$size}) {
                                $displaylist .= ('&nbsp;'x2).$lt{$size}.':&nbsp;'.
                                                $confhash{$itemid}{'display'}{$size}.',';
                            }
                        }
                        if ($displaylist) {
                            $displaylist =~ s/,$//;
                            $resulttext .= '<li>'.$displaylist.'</li>';
                        }
                        foreach my $item ('linktext','explanation') {
                            if ($confhash{$itemid}{'display'}{$item}) {
                                $resulttext .= '<li>'.$lt{$item}.':&nbsp;'.$confhash{$itemid}{'display'}{$item}.'</li>';
                            }
                        }
                    }
                    if (ref($confhash{$itemid}{'fields'}) eq 'HASH') {
                        my $fieldlist;
                        foreach my $field (@allfields) {
                            if ($confhash{$itemid}{'fields'}{$field}) {
                                $fieldlist .= ('&nbsp;'x2).$lt{$field}.',';
                            }
                        }
                        if ($fieldlist) {
                            $fieldlist =~ s/,$//;
                            if ($confhash{$itemid}{'fields'}{'user'}) {
                                if ($confhash{$itemid}{'incdom'}) {
                                    $fieldlist .= ' ('.&mt('username:domain').')';
                                } else {
                                    $fieldlist .= ' ('.&mt('username').')';
                                }
                            }
                            $resulttext .= '<li>'.&mt('Data sent').':'.$fieldlist.'</li>';
                        }
                    }
                    if (ref($confhash{$itemid}{'roles'}) eq 'HASH') {
                        my $rolemaps;
                        foreach my $role (@courseroles) {
                            if ($confhash{$itemid}{'roles'}{$role}) {
                                $rolemaps .= ('&nbsp;'x2).&Apache::lonnet::plaintext($role,'Course').'='.
                                             $confhash{$itemid}{'roles'}{$role}.',';
                            }
                        }
                        if ($rolemaps) {
                            $rolemaps =~ s/,$//; 
                            $resulttext .= '<li>'.&mt('Role mapping:').$rolemaps.'</li>';
                        }
                    }
                    if (ref($confhash{$itemid}{'custom'}) eq 'HASH') {
                        my $customlist;
                        if (keys(%{$confhash{$itemid}{'custom'}})) {
                            foreach my $key (sort(keys(%{$confhash{$itemid}{'custom'}}))) {
                                $customlist .= $key.':'.$confhash{$itemid}{'custom'}{$key}.('&nbsp;'x2);
                            } 
                        }
                        if ($customlist) {
                            $resulttext .= '<li>'.&mt('Custom items').': '.$customlist.'</li>';
                        }
                    } 
                    $resulttext .= '</ul></li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made.');
        }
    } else {
        $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
    }
    if ($errors) {
        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul>';
    }
    return $resulttext;
}

sub process_ltitools_image {
    my ($r,$dom,$confname,$caller,$itemid,$configuserok,$switchserver,$author_ok) = @_;
    my $filename = $env{'form.'.$caller.'.filename'};
    my ($error,$url);
    my ($width,$height) = (21,21);
    if ($configuserok eq 'ok') {
        if ($switchserver) {
            $error = &mt('Upload of Tool Provider (LTI) icon is not permitted to this server: [_1]',
                         $switchserver);
        } elsif ($author_ok eq 'ok') {
            my ($result,$imageurl,$madethumb) =
                &publishlogo($r,'upload',$caller,$dom,$confname,
                             "ltitools/$itemid/icon",$width,$height);
            if ($result eq 'ok') {
                if ($madethumb) {
                    my ($path,$imagefile) = ($imageurl =~ m{^(.+)/([^/]+)$});
                    my $imagethumb = "$path/tn-".$imagefile;
                    $url = $imagethumb;
                } else {
                    $url = $imageurl;
                }
            } else {
                $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$filename,$result);
            }
        } else {
            $error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$author_ok);
        }
    } else {
        $error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$configuserok);
    }
    return ($url,$error);
}

sub get_ltitools_id {
    my ($cdom,$title) = @_;
    # get lock on ltitools db
    my $lockhash = {
                      lock => $env{'user.name'}.
                              ':'.$env{'user.domain'},
                   };
    my $tries = 0;
    my $gotlock = &Apache::lonnet::newput_dom('ltitools',$lockhash,$cdom);
    my ($id,$error);
 
    while (($gotlock ne 'ok') && ($tries<10)) {
        $tries ++;
        sleep (0.1);
        $gotlock = &Apache::lonnet::newput_dom('ltitools',$lockhash,$cdom);
    }
    if ($gotlock eq 'ok') {
        my %currids = &Apache::lonnet::dump_dom('ltitools',$cdom);
        if ($currids{'lock'}) {
            delete($currids{'lock'});
            if (keys(%currids)) {
                my @curr = sort { $a <=> $b } keys(%currids);
                if ($curr[-1] =~ /^\d+$/) {
                    $id = 1 + $curr[-1];
                }
            } else {
                $id = 1;
            }
            if ($id) {
                unless (&Apache::lonnet::newput_dom('ltitools',{ $id => $title },$cdom) eq 'ok') {
                    $error = 'nostore';
                }
            } else {
                $error = 'nonumber';
            }
        }
        my $dellockoutcome = &Apache::lonnet::del_dom('ltitools',['lock'],$cdom);
    } else {
        $error = 'nolock';
    }
    return ($id,$error);
}

sub modify_proctoring {
    my ($r,$dom,$action,$lastactref,%domconfig) = @_;
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my (@allpos,%changes,%confhash,%encconfhash,$errors,$resulttext,%imgdeletions);
    my $confname = $dom.'-domainconfig';
    my $servadm = $r->dir_config('lonAdmEMail');
    my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
    my %providernames = &proctoring_providernames();
    my $maxnum = scalar(keys(%providernames));

    my (%requserfields,%optuserfields,%defaults,%extended,%crsconf,@courseroles,@ltiroles);
    my ($requref,$opturef,$defref,$extref,$crsref,$rolesref,$ltiref) = &proctoring_data();
    if (ref($requref) eq 'HASH') {
        %requserfields = %{$requref};
    }
    if (ref($opturef) eq 'HASH') {
        %optuserfields = %{$opturef};
    }
    if (ref($defref) eq 'HASH') {
        %defaults = %{$defref};
    }
    if (ref($extref) eq 'HASH') {
        %extended = %{$extref};
    }
    if (ref($crsref) eq 'HASH') {
        %crsconf = %{$crsref};
    }
    if (ref($rolesref) eq 'ARRAY') {
        @courseroles = @{$rolesref};
    }
    if (ref($ltiref) eq 'ARRAY') {
        @ltiroles = @{$ltiref};
    }

    if (ref($domconfig{$action}) eq 'HASH') {
        my @todeleteimages = &Apache::loncommon::get_env_multiple('form.proctoring_image_del');
        if (@todeleteimages) {
            map { $imgdeletions{$_} = 1; } @todeleteimages;
        }
    }
    my %customadds;
    my @newcustom = &Apache::loncommon::get_env_multiple('form.proctoring_customadd');
    if (@newcustom) {
        map { $customadds{$_} = 1; } @newcustom;
    }
    foreach my $provider (sort(keys(%providernames))) {
        $confhash{$provider} = {};
        my $pos = $env{'form.proctoring_pos_'.$provider};
        $pos =~ s/\D+//g;
        $allpos[$pos] = $provider;
        my (%current,%currentenc);
        my $showroles = 0;
        if (ref($domconfig{$action}) eq 'HASH') {
            if (ref($domconfig{$action}{$provider}) eq 'HASH') {
                %current = %{$domconfig{$action}{$provider}};
                foreach my $item ('key','secret') { 
                    $currentenc{$item} = $current{$item};
                    delete($current{$item});
                }
            }
        }
        if ($env{'form.proctoring_available_'.$provider}) {
            $confhash{$provider}{'available'} = 1;
            unless ($current{'available'}) {
                $changes{$provider} = 1;
            }
        } else {
            %{$confhash{$provider}} = %current;
            %{$encconfhash{$provider}} = %currentenc;
            $confhash{$provider}{'available'} = 0;
            if ($current{'available'}) {
                $changes{$provider} = 1;
            }
        }
        if ($confhash{$provider}{'available'}) {
            foreach my $field ('lifetime','version','sigmethod','url','key','secret') {
                my $possval = $env{'form.proctoring_'.$provider.'_'.$field};
                if ($field eq 'lifetime') {
                    if ($possval =~ /^\d+$/) {
                        $confhash{$provider}{$field} = $possval;
                    }
                } elsif ($field eq 'version') {
                    if ($possval =~ /^\d+\.\d+$/) {
                        $confhash{$provider}{$field} = $possval;
                    }
                } elsif ($field eq 'sigmethod') {
                    if ($possval =~ /^\QHMAC-SHA\E(1|256)$/) {
                        $confhash{$provider}{$field} = $possval;
                    }
                } elsif ($field eq 'url') {
                    $confhash{$provider}{$field} = $possval;
                } elsif (($field eq 'key') || ($field eq 'secret')) {
                    $encconfhash{$provider}{$field} = $possval;
                    unless ($currentenc{$field} eq $possval) {
                        $changes{$provider} = 1;
                    }
                }
                unless (($field eq 'key') || ($field eq 'secret')) {
                    unless ($current{$field} eq $confhash{$provider}{$field}) {
                        $changes{$provider} = 1;
                    }
                }
            }
            if ($imgdeletions{$provider}) {
                $changes{$provider} = 1;
            } elsif ($env{'form.proctoring_image_'.$provider.'.filename'} ne '') {
                my ($imageurl,$error) =
                    &process_proctoring_image($r,$dom,$confname,'proctoring_image_'.$provider,$provider,
                                              $configuserok,$switchserver,$author_ok);
                if ($imageurl) {
                    $confhash{$provider}{'image'} = $imageurl;
                    $changes{$provider} = 1; 
                }
                if ($error) {
                    &Apache::lonnet::logthis($error);
                    $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                }
            } elsif (exists($current{'image'})) {
                $confhash{$provider}{'image'} = $current{'image'};
            }
            if (ref($requserfields{$provider}) eq 'ARRAY') {
                if (@{$requserfields{$provider}} > 0) {
                    if (grep(/^user$/,@{$requserfields{$provider}})) {
                        if ($env{'form.proctoring_userincdom_'.$provider}) {
                            $confhash{$provider}{'incdom'} = 1;
                        }
                        unless ($current{'incdom'} eq $confhash{$provider}{'incdom'}) {
                            $changes{$provider} = 1;
                        }
                    }
                    if (grep(/^roles$/,@{$requserfields{$provider}})) {
                        $showroles = 1;
                    }
                }
            }
            $confhash{$provider}{'fields'} = [];
            if (ref($optuserfields{$provider}) eq 'ARRAY') {
                if (@{$optuserfields{$provider}} > 0) {
                    my @optfields = &Apache::loncommon::get_env_multiple('form.proctoring_optional_'.$provider);
                    foreach my $field (@{$optuserfields{$provider}}) {
                        if (grep(/^\Q$field\E$/,@optfields)) {
                            push(@{$confhash{$provider}{'fields'}},$field);
                        }
                    }
                }
                if (ref($current{'fields'}) eq 'ARRAY') {
                    unless ($changes{$provider}) {
                        my @new = sort(@{$confhash{$provider}{'fields'}});
                        my @old = sort(@{$current{'fields'}}); 
                        my @diffs = &Apache::loncommon::compare_arrays(\@new,\@old);
                        if (@diffs) {
                            $changes{$provider} = 1;
                        }
                    }
                } elsif (@{$confhash{$provider}{'fields'}}) {
                    $changes{$provider} = 1;
                }
            }
            if (ref($defaults{$provider}) eq 'ARRAY') {  
                if (@{$defaults{$provider}} > 0) {
                    my %options;
                    if (ref($extended{$provider}) eq 'HASH') {
                        %options = %{$extended{$provider}};
                    }
                    my @checked = &Apache::loncommon::get_env_multiple('form.proctoring_defaults_'.$provider);
                    foreach my $field (@{$defaults{$provider}}) {
                        if ((exists($options{$field})) && (ref($options{$field}) eq 'ARRAY')) {
                            my $poss = $env{'form.proctoring_defaults_'.$field.'_'.$provider};
                            if (grep(/^\Q$poss\E$/,@{$options{$field}})) {
                                push(@{$confhash{$provider}{'defaults'}},$poss); 
                            }
                        } elsif ((exists($options{$field})) && (ref($options{$field}) eq 'HASH')) {
                            foreach my $inner (keys(%{$options{$field}})) {
                                if (ref($options{$field}{$inner}) eq 'ARRAY') {
                                    my $poss = $env{'form.proctoring_'.$inner.'_'.$provider};
                                    if (grep(/^\Q$poss\E$/,@{$options{$field}{$inner}})) {
                                        $confhash{$provider}{'defaults'}{$inner} = $poss;
                                    }
                                } else {
                                    $confhash{$provider}{'defaults'}{$inner} = $env{'form.proctoring_'.$inner.'_'.$provider};
                                }
                            }
                        } else {
                            if (grep(/^\Q$field\E$/,@checked)) {
                                push(@{$confhash{$provider}{'defaults'}},$field);
                            }
                        }
                    }
                    if (ref($confhash{$provider}{'defaults'}) eq 'ARRAY') {
                        if (ref($current{'defaults'}) eq 'ARRAY') {
                            unless ($changes{$provider}) {
                                my @new = sort(@{$confhash{$provider}{'defaults'}});
                                my @old = sort(@{$current{'defaults'}});
                                my @diffs = &Apache::loncommon::compare_arrays(\@new,\@old);
                                if (@diffs) {
                                    $changes{$provider} = 1; 
                                }
                            }
                        } elsif (ref($current{'defaults'}) eq 'ARRAY') {
                            if (@{$current{'defaults'}}) {
                                $changes{$provider} = 1;
                            }
                        }
                    } elsif (ref($confhash{$provider}{'defaults'}) eq 'HASH') {
                        if (ref($current{'defaults'}) eq 'HASH') {
                            unless ($changes{$provider}) {
                                foreach my $key (keys(%{$confhash{$provider}{'defaults'}})) {
                                    unless ($confhash{$provider}{'defaults'}{$key} eq $current{'defaults'}{$key}) {
                                        $changes{$provider} = 1;
                                        last;
                                    }
                                }
                            }
                            unless ($changes{$provider}) {
                                foreach my $key (keys(%{$current{'defaults'}})) {
                                    unless ($current{'defaults'}{$key} eq $confhash{$provider}{'defaults'}{$key}) {
                                        $changes{$provider} = 1;
                                        last;
                                    }
                                }
                            }
                        } elsif (keys(%{$confhash{$provider}{'defaults'}})) {
                            $changes{$provider} = 1;
                        }
                    }
                }
            }
            if (ref($crsconf{$provider}) eq 'ARRAY') {
                if (@{$crsconf{$provider}} > 0) {
                    $confhash{$provider}{'crsconf'} = [];
                    my @checked = &Apache::loncommon::get_env_multiple('form.proctoring_crsconf_'.$provider);
                    foreach my $crsfield (@{$crsconf{$provider}}) {
                        if (grep(/^\Q$crsfield\E$/,@checked)) {
                            push(@{$confhash{$provider}{'crsconf'}},$crsfield);
                        }
                    }
                    if (ref($current{'crsconf'}) eq 'ARRAY') {
                        unless ($changes{$provider}) {  
                            my @new = sort(@{$confhash{$provider}{'crsconf'}});
                            my @old = sort(@{$current{'crsconf'}});
                            my @diffs = &Apache::loncommon::compare_arrays(\@new,\@old);
                            if (@diffs) {
                                $changes{$provider} = 1;
                            }
                        }
                    } elsif (@{$confhash{$provider}{'crsconf'}}) {
                        $changes{$provider} = 1;
                    }
                }
            }
            if ($showroles) {
                $confhash{$provider}{'roles'} = {};
                foreach my $role (@courseroles) {
                    my $poss = $env{'form.proctoring_roles_'.$role.'_'.$provider};
                    if (grep(/^\Q$poss\E$/,@ltiroles)) {
                        $confhash{$provider}{'roles'}{$role} = $poss;
                    }
                }
                unless ($changes{$provider}) {
                    if (ref($current{'roles'}) eq 'HASH') {
                        foreach my $role (keys(%{$current{'roles'}})) {
                            unless ($current{'roles'}{$role} eq $confhash{$provider}{'roles'}{$role}) {
                                $changes{$provider} = 1;
                                last
                            }
                        }
                        unless ($changes{$provider}) {
                            foreach my $role (keys(%{$confhash{$provider}{'roles'}})) {
                                unless ($confhash{$provider}{'roles'}{$role} eq $current{'roles'}{$role}) {
                                    $changes{$provider} = 1;
                                    last;
                                }
                            }
                        }
                    } elsif (keys(%{$confhash{$provider}{'roles'}})) {
                        $changes{$provider} = 1;
                    }
                }
            }
            if (ref($current{'custom'}) eq 'HASH') {
                my @customdels = &Apache::loncommon::get_env_multiple('form.proctoring_customdel_'.$provider);
                foreach my $key (keys(%{$current{'custom'}})) {
                    if (grep(/^\Q$key\E$/,@customdels)) {
                        $changes{$provider} = 1;
                    } else {
                        $confhash{$provider}{'custom'}{$key} = $env{'form.proctoring_customval_'.$key.'_'.$provider};
                        if ($confhash{$provider}{'custom'}{$key} ne $current{'custom'}{$key}) {
                            $changes{$provider} = 1;
                        }
                    }
                }
            }
            if ($customadds{$provider}) {
                my $name = $env{'form.proctoring_custom_name_'.$provider};
                $name =~ s/(`)/'/g;
                $name =~ s/^\s+//;
                $name =~ s/\s+$//;
                my $value = $env{'form.proctoring_custom_value_'.$provider};
                $value =~ s/(`)/'/g;
                $value =~ s/^\s+//;
                $value =~ s/\s+$//;
                if ($name ne '') {
                    $confhash{$provider}{'custom'}{$name} = $value;
                    $changes{$provider} = 1;
                }
            }
        }
    }
    if (@allpos > 0) {
        my $idx = 0;
        foreach my $provider (@allpos) {
            if ($provider ne '') {
                $confhash{$provider}{'order'} = $idx;
                unless ($changes{$provider}) {
                    if (ref($domconfig{$action}) eq 'HASH') {
                        if (ref($domconfig{$action}{$provider}) eq 'HASH') {
                            if ($domconfig{$action}{$provider}{'order'} ne $idx) {
                                $changes{$provider} = 1;
                            }
                        }
                    }
                }
                $idx ++;
            }
        }
    }
    my %proc_hash = (
                          $action => { %confhash }
                       );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%proc_hash,
                                             $dom);
    if ($putresult eq 'ok') {
        my %proc_enchash = (
                             $action => { %encconfhash }
                         );
        &Apache::lonnet::put_dom('encconfig',\%proc_enchash,$dom,undef,1);
        if (keys(%changes) > 0) {
            my $cachetime = 24*60*60;
            my %procall = %confhash;
            foreach my $provider (keys(%procall)) {
                if (ref($encconfhash{$provider}) eq 'HASH') {
                    foreach my $key ('key','secret') {
                        $procall{$provider}{$key} = $encconfhash{$provider}{$key};
                    }
                }
            }
            &Apache::lonnet::do_cache_new('proctoring',$dom,\%procall,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'proctoring'} = 1;
            }
            $resulttext = &mt('Configuration for Provider(s) with changes:').'<ul>';
            my %bynum;
            foreach my $provider (sort(keys(%changes))) {
                my $position = $confhash{$provider}{'order'};
                $bynum{$position} = $provider;
            }
            foreach my $pos (sort { $a <=> $b } keys(%bynum)) {
                my $provider = $bynum{$pos};
                my %lt = &proctoring_titles($provider);
                my %fieldtitles = &proctoring_fieldtitles($provider);
                if (!$confhash{$provider}{'available'}) {
                    $resulttext .= '<li>'.&mt('Proctoring integration unavailable for: [_1]','<b>'.$providernames{$provider}.'</b>').'</li>';
                } else {
                    $resulttext .= '<li>'.&mt('Proctoring integration available for: [_1]','<b>'.$providernames{$provider}.'</b>');
                    if ($confhash{$provider}{'image'}) {
                        $resulttext .= '&nbsp;'.
                                       '<img src="'.$confhash{$provider}{'image'}.'"'.
                                       ' alt="'.&mt('Proctoring icon').'" />';
                    }
                    $resulttext .= '<ul>';
                    my $position = $pos + 1;
                    $resulttext .= '<li>'.&mt('Order: [_1]',$position).'</li>';
                    foreach my $key ('version','sigmethod','url','lifetime') {
                        if ($confhash{$provider}{$key} ne '') {
                            $resulttext .= '<li>'.$lt{$key}.':&nbsp;'.$confhash{$provider}{$key}.'</li>';
                        }
                    }
                    if ($encconfhash{$provider}{'key'} ne '') {
                        $resulttext .= '<li>'.$lt{'key'}.':&nbsp;'.$encconfhash{$provider}{'key'}.'</li>';
                    }
                    if ($encconfhash{$provider}{'secret'} ne '') {
                        $resulttext .= '<li>'.$lt{'secret'}.':&nbsp;';
                        my $num = length($encconfhash{$provider}{'secret'});
                        $resulttext .= ('*'x$num).'</li>';
                    }
                    my (@fields,$showroles);
                    if (ref($requserfields{$provider}) eq 'ARRAY') {
                        push(@fields,@{$requserfields{$provider}});
                    }
                    if (ref($confhash{$provider}{'fields'}) eq 'ARRAY') {
                        push(@fields,@{$confhash{$provider}{'fields'}});
                    } elsif (ref($confhash{$provider}{'fields'}) eq 'HASH') {
                        push(@fields,(keys(%{$confhash{$provider}{'fields'}})));
                    }
                    if (@fields) {
                        if (grep(/^roles$/,@fields)) {
                            $showroles = 1;
                        }
                        $resulttext .= '<li>'.$lt{'udsl'}.':&nbsp;"'.
                                       join('", "', map { $lt{$_}; } @fields).'"</li>';
                    }
                    if (ref($requserfields{$provider}) eq 'ARRAY') {
                        if (grep(/^user$/,@{$requserfields{$provider}})) {
                            if ($confhash{$provider}{'incdom'}) {
                                $resulttext .= '<li>'.&mt('[_1] sent as [_2]',$lt{'user'},$lt{'uname:dom'}).'</li>';
                            } else { 
                                $resulttext .= '<li>'.&mt('[_1] sent as [_2]',$lt{'user'},$lt{'username'}).'</li>';
                            }
                        }
                    }
                    if (ref($confhash{$provider}{'defaults'}) eq 'ARRAY') {
                        if (@{$confhash{$provider}{'defaults'}} > 0) {
                            $resulttext .= '<li>'.$lt{'defa'};
                            foreach my $field (@{$confhash{$provider}{'defaults'}}) {
                                $resulttext .= ' "'.$fieldtitles{$field}.'",';
                            }
                            $resulttext =~ s/,$//;
                            $resulttext .= '</li>';
                        }
                    } elsif (ref($confhash{$provider}{'defaults'}) eq 'HASH') {
                        if (keys(%{$confhash{$provider}{'defaults'}})) {
                            $resulttext .= '<li>'.$lt{'defa'}.':&nbsp;<ul>';
                            foreach my $key (sort(keys(%{$confhash{$provider}{'defaults'}}))) {
                                if ($confhash{$provider}{'defaults'}{$key} ne '') {
                                    $resulttext .= '<li>'.$fieldtitles{$key}.' = '.$confhash{$provider}{'defaults'}{$key}.'</li>';
                                }
                            }
                            $resulttext .= '</ul></li>';
                        }
                    }
                    if (ref($crsconf{$provider}) eq 'ARRAY') {
                        if (@{$crsconf{$provider}} > 0) {
                            $resulttext .= '<li>'.&mt('Configurable in course:');
                            my $numconfig = 0;
                            if (ref($confhash{$provider}{'crsconf'}) eq 'ARRAY') {
                                if (@{$confhash{$provider}{'crsconf'}} > 0) {
                                    foreach my $field (@{$confhash{$provider}{'crsconf'}}) {
                                        $numconfig ++;
                                        if ($provider eq 'examity') {
                                            $resulttext .= ' "'.$lt{'crs'.$field}.'",';
                                        } else {
                                            $resulttext .= ' "'.$fieldtitles{$field}.'",';
                                        }
                                    }
                                    $resulttext =~ s/,$//;
                                }
                            }
                            if (!$numconfig) {
                                $resulttext .= '&nbsp;'.&mt('None');
                            }
                            $resulttext .= '</li>';
                        }
                    }
                    if ($showroles) {
                        if (ref($confhash{$provider}{'roles'}) eq 'HASH') {
                            my $rolemaps;
                            foreach my $role (@courseroles) {
                                if ($confhash{$provider}{'roles'}{$role}) {
                                    $rolemaps .= ('&nbsp;'x2).&Apache::lonnet::plaintext($role,'Course').'='.
                                                 $confhash{$provider}{'roles'}{$role}.',';
                                }
                            }
                            if ($rolemaps) {
                                $rolemaps =~ s/,$//;
                                $resulttext .= '<li>'.&mt('Role mapping:').$rolemaps.'</li>';
                            }
                        }
                    }
                    if (ref($confhash{$provider}{'custom'}) eq 'HASH') {
                        my $customlist;
                        if (keys(%{$confhash{$provider}{'custom'}})) {
                            foreach my $key (sort(keys(%{$confhash{$provider}{'custom'}}))) {
                                $customlist .= $key.'='.$confhash{$provider}{'custom'}{$key}.', ';
                            }
                            $customlist =~ s/,$//;
                        }
                        if ($customlist) {
                            $resulttext .= '<li>'.&mt('Custom items').': '.$customlist.'</li>';
                        }
                    } 
                    $resulttext .= '</ul></li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made.');
        }
    } else {
        $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
    }
    if ($errors) {
        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul>';
    }
    return $resulttext;
}

sub process_proctoring_image {
    my ($r,$dom,$confname,$caller,$provider,$configuserok,$switchserver,$author_ok) = @_;
    my $filename = $env{'form.'.$caller.'.filename'};
    my ($error,$url);
    my ($width,$height) = (21,21);
    if ($configuserok eq 'ok') {
        if ($switchserver) {
            $error = &mt('Upload of Remote Proctoring Provider icon is not permitted to this server: [_1]',
                         $switchserver);
        } elsif ($author_ok eq 'ok') {
            my ($result,$imageurl,$madethumb) =
                &publishlogo($r,'upload',$caller,$dom,$confname,
                             "proctoring/$provider/icon",$width,$height);
            if ($result eq 'ok') {
                if ($madethumb) {
                    my ($path,$imagefile) = ($imageurl =~ m{^(.+)/([^/]+)$});
                    my $imagethumb = "$path/tn-".$imagefile;
                    $url = $imagethumb;
                } else {
                    $url = $imageurl;
                }
            } else {
                $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$filename,$result);
            }
        } else {
            $error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$author_ok);
        }
    } else {
        $error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$configuserok);
    }
    return ($url,$error);
}

sub modify_lti {
    my ($r,$dom,$action,$lastactref,%domconfig) = @_;
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my ($newid,@allpos,%changes,%confhash,%encconfig,$errors,$resulttext);
    my (%posslti,%posslticrs,%posscrstype);
    my @courseroles = ('cc','in','ta','ep','st');
    my @ltiroles = qw(Learner Instructor ContentDeveloper TeachingAssistant Mentor Member Manager Administrator);
    my @lticourseroles = qw(Instructor TeachingAssistant Mentor Learner);
    my @coursetypes = ('official','unofficial','community','textbook','placement','lti');
    my %coursetypetitles = &Apache::lonlocal::texthash (
                               official   => 'Official',
                               unofficial => 'Unofficial',
                               community  => 'Community',
                               textbook   => 'Textbook',
                               placement  => 'Placement Test',
                               lti        => 'LTI Provider',
    );
    my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
    my %lt = &lti_names();
    map { $posslti{$_} = 1; } @ltiroles;
    map { $posslticrs{$_} = 1; } @lticourseroles;
    map { $posscrstype{$_} = 1; } @coursetypes;

    my %menutitles = &ltimenu_titles();

    my (@items,%deletions,%itemids);
    if ($env{'form.lti_add'}) {
        my $consumer = $env{'form.lti_consumer_add'};
        $consumer =~ s/(`)/'/g;
        ($newid,my $error) = &get_lti_id($dom,$consumer);
        if ($newid) {
            $itemids{'add'} = $newid;
            push(@items,'add');
            $changes{$newid} = 1;
        } else {
            my $error = &mt('Failed to acquire unique ID for new LTI configuration');
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }
    if (ref($domconfig{$action}) eq 'HASH') {
        my @todelete = &Apache::loncommon::get_env_multiple('form.lti_del');
        if (@todelete) {
            map { $deletions{$_} = 1; } @todelete;
        }
        my $maxnum = $env{'form.lti_maxnum'};
        for (my $i=0; $i<$maxnum; $i++) {
            my $itemid = $env{'form.lti_id_'.$i};
            $itemid =~ s/\D+//g;
            if (ref($domconfig{$action}{$itemid}) eq 'HASH') {
                if ($deletions{$itemid}) {
                    $changes{$itemid} = $domconfig{$action}{$itemid}{'consumer'};
                } else {
                    push(@items,$i);
                    $itemids{$i} = $itemid;
                }
            }
        }
    }
    foreach my $idx (@items) {
        my $itemid = $itemids{$idx};
        next unless ($itemid);
        my $position = $env{'form.lti_pos_'.$itemid};
        $position =~ s/\D+//g;
        if ($position ne '') {
            $allpos[$position] = $itemid;
        }
        foreach my $item ('consumer','key','secret','lifetime','requser','crsinc') {
            my $formitem = 'form.lti_'.$item.'_'.$idx;
            $env{$formitem} =~ s/(`)/'/g;
            if ($item eq 'lifetime') {
                $env{$formitem} =~ s/[^\d.]//g;
            }
            if ($env{$formitem} ne '') {
                if (($item eq 'key') || ($item eq 'secret')) {
                    $encconfig{$itemid}{$item} = $env{$formitem};
                } else {
                    $confhash{$itemid}{$item} = $env{$formitem};
                    unless (($idx eq 'add') || ($changes{$itemid})) {
                        if ($domconfig{$action}{$itemid}{$item} ne $confhash{$itemid}{$item}) {
                            $changes{$itemid} = 1;
                        }
                    }
                }
            }
        }
        if ($env{'form.lti_version_'.$idx} eq 'LTI-1p0') {
            $confhash{$itemid}{'version'} = $env{'form.lti_version_'.$idx};
        }
        if ($confhash{$itemid}{'requser'}) {
            if ($env{'form.lti_mapuser_'.$idx} eq 'sourcedid') {
                $confhash{$itemid}{'mapuser'} = 'lis_person_sourcedid'; 
            } elsif ($env{'form.lti_mapuser_'.$idx} eq 'email') {
                $confhash{$itemid}{'mapuser'} = 'lis_person_contact_email_primary';
            } elsif ($env{'form.lti_mapuser_'.$idx} eq 'other') {
                my $mapuser = $env{'form.lti_customuser_'.$idx};
                $mapuser =~ s/(`)/'/g;
                $mapuser =~ s/^\s+|\s+$//g; 
                $confhash{$itemid}{'mapuser'} = $mapuser; 
            }
            my @possmakeuser = &Apache::loncommon::get_env_multiple('form.lti_makeuser_'.$idx);
            my @makeuser;
            foreach my $ltirole (sort(@possmakeuser)) {
                if ($posslti{$ltirole}) {
                    push(@makeuser,$ltirole);
                }
            }
            $confhash{$itemid}{'makeuser'} = \@makeuser;
            if (@makeuser) {
                my $lcauth = $env{'form.lti_lcauth_'.$idx};
                if ($lcauth =~ /^(internal|krb4|krb5|localauth)$/) {
                    $confhash{$itemid}{'lcauth'} = $lcauth;
                    if ($lcauth ne 'internal') {
                        my $lcauthparm = $env{'form.lti_lcauthparm_'.$idx};
                        $lcauthparm =~ s/^(\s+|\s+)$//g;
                        $lcauthparm =~ s/`//g;
                        if ($lcauthparm ne '') {
                            $confhash{$itemid}{'lcauthparm'} = $lcauthparm;
                        }
                    }
                } else {
                    $confhash{$itemid}{'lcauth'} = 'lti';
                }
            }
            my @possinstdata =  &Apache::loncommon::get_env_multiple('form.lti_instdata_'.$idx);
            if (@possinstdata) {
                foreach my $field (@possinstdata) {
                    if (exists($fieldtitles{$field})) {
                        push(@{$confhash{$itemid}{'instdata'}});
                    }
                }
            }
            if ($env{'form.lti_callback_'.$idx}) {
                if ($env{'form.lti_callbackparam_'.$idx}) {
                    my $callback = $env{'form.lti_callbackparam_'.$idx};
                    $callback =~ s/^\s+|\s+$//g;
                    $confhash{$itemid}{'callback'} = $callback;
                }
            }
            foreach my $field ('topmenu','inlinemenu') {
                if ($env{'form.lti_'.$field.'_'.$idx}) {
                    $confhash{$itemid}{$field} = 1;
                }
            }
            if ($env{'form.lti_topmenu_'.$idx} || $env{'form.lti_inlinemenu_'.$idx}) {
                $confhash{$itemid}{lcmenu} = [];
                my @possmenu = &Apache::loncommon::get_env_multiple('form.lti_menuitem_'.$idx);
                foreach my $field (@possmenu) {
                    if (exists($menutitles{$field})) {
                        if ($field eq 'grades') {
                            next unless ($env{'form.lti_inlinemenu_'.$idx});
                        }
                        push(@{$confhash{$itemid}{lcmenu}},$field);
                    }
                }
            }
            if ($confhash{$itemid}{'crsinc'}) {
                if (($env{'form.lti_mapcrs_'.$idx} eq 'course_offering_sourcedid') ||
                    ($env{'form.lti_mapcrs_'.$idx} eq 'context_id'))  {
                    $confhash{$itemid}{'mapcrs'} = $env{'form.lti_mapcrs_'.$idx};
                } elsif ($env{'form.lti_mapcrs_'.$idx} eq 'other') {
                    my $mapcrs = $env{'form.lti_mapcrsfield_'.$idx}; 
                    $mapcrs =~ s/(`)/'/g;
                    $mapcrs =~ s/^\s+|\s+$//g;
                    $confhash{$itemid}{'mapcrs'} = $mapcrs;
                }
                my @posstypes = &Apache::loncommon::get_env_multiple('form.lti_mapcrstype_'.$idx);
                my @crstypes;
                foreach my $type (sort(@posstypes)) {
                    if ($posscrstype{$type}) {
                        push(@crstypes,$type);
                    }
                }
                $confhash{$itemid}{'mapcrstype'} = \@crstypes;
                if ($env{'form.lti_storecrs_'.$idx}) {
                    $confhash{$itemid}{'storecrs'} = 1;
                }       
                if ($env{'form.lti_makecrs_'.$idx}) {
                    $confhash{$itemid}{'makecrs'} = 1;
                }
                foreach my $ltirole (@lticourseroles) {
                    my $possrole = $env{'form.lti_maprole_'.$ltirole.'_'.$idx};
                    if (grep(/^\Q$possrole\E$/,@courseroles)) {
                        $confhash{$itemid}{'maproles'}{$ltirole} = $possrole;
                    }
                }
                my @possenroll = &Apache::loncommon::get_env_multiple('form.lti_selfenroll_'.$idx);
                my @selfenroll;
                foreach my $type (sort(@possenroll)) {
                    if ($posslticrs{$type}) {
                        push(@selfenroll,$type);
                    }
                }
                $confhash{$itemid}{'selfenroll'} = \@selfenroll;
                if ($env{'form.lti_crssec_'.$idx}) {
                    if ($env{'form.lti_crssecsrc_'.$idx} eq 'course_section_sourcedid') {
                        $confhash{$itemid}{'section'} = $env{'form.lti_crssecsrc_'.$idx};
                    } elsif ($env{'form.lti_crssecsrc_'.$idx} eq 'other') {
                        my $section = $env{'form.lti_customsection_'.$idx};
                        $section =~ s/(`)/'/g;
                        $section =~ s/^\s+|\s+$//g;
                        if ($section ne '') {
                            $confhash{$itemid}{'section'} = $section;
                        }
                    }
                }
                foreach my $field ('passback','roster') {
                    if ($env{'form.lti_'.$field.'_'.$idx}) {
                        $confhash{$itemid}{$field} = 1;
                    }
                }
                if ($env{'form.lti_passback_'.$idx}) {
                    if ($env{'form.lti_passbackformat_'.$idx} eq '1.0') {
                        $confhash{$itemid}{'passbackformat'} = '1.0';
                    } else {
                        $confhash{$itemid}{'passbackformat'} = '1.1';
                    }
                }
            }
            unless (($idx eq 'add') || ($changes{$itemid})) {
                if ($confhash{$itemid}{'crsinc'}) {
                    foreach my $field ('mapcrs','storecrs','makecrs','section','passback','roster') {
                        if ($domconfig{$action}{$itemid}{$field} ne $confhash{$itemid}{$field}) {
                            $changes{$itemid} = 1;
                        }
                    }
                    unless ($changes{$itemid}) {
                        if ($domconfig{$action}{$itemid}{'passback'} eq $confhash{$itemid}{'passback'}) {
                            if ($domconfig{$action}{$itemid}{'passbackformat'} ne $confhash{$itemid}{'passbackformat'}) {
                                $changes{$itemid} = 1;
                            }
                        }
                    }
                    foreach my $field ('mapcrstype','selfenroll') {
                        unless ($changes{$itemid}) {
                            if (ref($domconfig{$action}{$itemid}{$field}) eq 'ARRAY') {
                                if (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
                                    my @diffs = &Apache::loncommon::compare_arrays($domconfig{$action}{$itemid}{$field},
                                                                                   $confhash{$itemid}{$field});
                                    if (@diffs) {
                                        $changes{$itemid} = 1;
                                    }
                                } elsif (@{$domconfig{$action}{$itemid}{$field}} > 0) {
                                    $changes{$itemid} = 1;
                                }
                            } elsif (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
                                if (@{$confhash{$itemid}{$field}} > 0) {
                                    $changes{$itemid} = 1;
                                }
                            }
                        }
                    }
                    unless ($changes{$itemid}) {
                        if (ref($domconfig{$action}{$itemid}{'maproles'}) eq 'HASH') {
                            if (ref($confhash{$itemid}{'maproles'}) eq 'HASH') {
                                foreach my $ltirole (keys(%{$domconfig{$action}{$itemid}{'maproles'}})) {
                                    if ($domconfig{$action}{$itemid}{'maproles'}{$ltirole} ne 
                                        $confhash{$itemid}{'maproles'}{$ltirole}) {
                                        $changes{$itemid} = 1;
                                        last;
                                    }
                                }
                                unless ($changes{$itemid}) {
                                    foreach my $ltirole (keys(%{$confhash{$itemid}{'maproles'}})) {
                                        if ($confhash{$itemid}{'maproles'}{$ltirole} ne 
                                            $domconfig{$action}{$itemid}{'maproles'}{$ltirole}) {
                                            $changes{$itemid} = 1;
                                            last;
                                        }
                                    }
                                }
                            } elsif (keys(%{$domconfig{$action}{$itemid}{'maproles'}}) > 0) {
                                $changes{$itemid} = 1;
                            }
                        } elsif (ref($confhash{$itemid}{'maproles'}) eq 'HASH') {
                            unless ($changes{$itemid}) {
                                if (keys(%{$confhash{$itemid}{'maproles'}}) > 0) {
                                    $changes{$itemid} = 1;
                                }
                            }
                        }
                    }
                }
                unless ($changes{$itemid}) {
                    foreach my $field ('mapuser','lcauth','lcauthparm','topmenu','inlinemenu','callback') {
                        if ($domconfig{$action}{$itemid}{$field} ne $confhash{$itemid}{$field}) {
                            $changes{$itemid} = 1;
                        }
                    }
                    unless ($changes{$itemid}) {
                        foreach my $field ('makeuser','lcmenu') {
                            if (ref($domconfig{$action}{$itemid}{$field}) eq 'ARRAY') {
                                if (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
                                    my @diffs = &Apache::loncommon::compare_arrays($domconfig{$action}{$itemid}{$field},
                                                                                   $confhash{$itemid}{$field});
                                    if (@diffs) {
                                        $changes{$itemid} = 1;
                                    }
                                } elsif (@{$domconfig{$action}{$itemid}{$field}} > 0) {
                                    $changes{$itemid} = 1;
                                }
                            } elsif (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
                                if (@{$confhash{$itemid}{$field}} > 0) {
                                    $changes{$itemid} = 1;
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    if (@allpos > 0) {
        my $idx = 0;
        foreach my $itemid (@allpos) {
            if ($itemid ne '') {
                $confhash{$itemid}{'order'} = $idx;
                if (ref($domconfig{$action}) eq 'HASH') {
                    if (ref($domconfig{$action}{$itemid}) eq 'HASH') {
                        if ($domconfig{$action}{$itemid}{'order'} ne $idx) {
                            $changes{$itemid} = 1;
                        }
                    }
                }
                $idx ++;
            }
        }
    }
    my %ltihash = (
                          $action => { %confhash }
                       );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%ltihash,
                                             $dom);
    if ($putresult eq 'ok') {
        my %ltienchash = (
                             $action => { %encconfig }
                         );
        &Apache::lonnet::put_dom('encconfig',\%ltienchash,$dom,undef,1);
        if (keys(%changes) > 0) {
            my $cachetime = 24*60*60;
            my %ltiall = %confhash;
            foreach my $id (keys(%ltiall)) {
                if (ref($encconfig{$id}) eq 'HASH') {
                    foreach my $item ('key','secret') {
                        $ltiall{$id}{$item} = $encconfig{$id}{$item};
                    }
                }
            }
            &Apache::lonnet::do_cache_new('lti',$dom,\%ltiall,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'lti'} = 1;
            }
            $resulttext = &mt('Changes made:').'<ul>';
            my %bynum;
            foreach my $itemid (sort(keys(%changes))) {
                my $position = $confhash{$itemid}{'order'};
                $bynum{$position} = $itemid;
            }
            foreach my $pos (sort { $a <=> $b } keys(%bynum)) {
                my $itemid = $bynum{$pos};
                if (ref($confhash{$itemid}) ne 'HASH') {
                    $resulttext .= '<li>'.&mt('Deleted: [_1]',$changes{$itemid}).'</li>';
                } else {
                    $resulttext .= '<li><b>'.$confhash{$itemid}{'consumer'}.'</b><ul>';
                    my $position = $pos + 1;
                    $resulttext .= '<li>'.&mt('Order: [_1]',$position).'</li>';
                    foreach my $item ('version','lifetime') {
                        if ($confhash{$itemid}{$item} ne '') {
                            $resulttext .= '<li>'.$lt{$item}.':&nbsp;'.$confhash{$itemid}{$item}.'</li>';
                        }
                    }
                    if ($encconfig{$itemid}{'key'} ne '') {
                        $resulttext .= '<li>'.$lt{'key'}.':&nbsp;'.$encconfig{$itemid}{'key'}.'</li>';
                    }
                    if ($encconfig{$itemid}{'secret'} ne '') {
                        $resulttext .= '<li>'.$lt{'secret'}.':&nbsp;';
                        my $num = length($encconfig{$itemid}{'secret'});
                        $resulttext .= ('*'x$num).'</li>';
                    }
                    if ($confhash{$itemid}{'requser'}) {
                        if ($confhash{$itemid}{'callback'}) {
                            $resulttext .= '<li>'.&mt('Callback setting').': '.$confhash{$itemid}{'callback'}.'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('Callback to logout LON-CAPA on log out from Consumer').'</li>';
                        }
                        if ($confhash{$itemid}{'mapuser'}) {
                            my $shownmapuser;
                            if ($confhash{$itemid}{'mapuser'} eq 'lis_person_sourcedid') {
                                $shownmapuser = $lt{'sourcedid'}.' (lis_person_sourcedid)';
                            } elsif ($confhash{$itemid}{'mapuser'} eq 'lis_person_contact_email_primary') {
                                $shownmapuser = $lt{'email'}.' (lis_person_contact_email_primary)';
                            } else {
                                $shownmapuser = &mt('Other').' ('.$confhash{$itemid}{'mapuser'}.')';
                            }
                            $resulttext .= '<li>'.&mt('LON-CAPA username').': '.$shownmapuser.'</li>';
                        }
                        if (ref($confhash{$itemid}{'makeuser'}) eq 'ARRAY') {
                            if (@{$confhash{$itemid}{'makeuser'}} > 0) { 
                                $resulttext .= '<li>'.&mt('Following roles may create user accounts: [_1]',
                                                          join(', ',@{$confhash{$itemid}{'makeuser'}})).'<br />';
                                if ($confhash{$itemid}{'lcauth'} eq 'lti') {
                                    $resulttext .= &mt('New users will only be able to authenticate via LTI').'</li>';
                                } else {
                                    $resulttext .= &mt('New users will be assigned LON-CAPA authentication: [_1]',
                                                       $confhash{$itemid}{'lcauth'});
                                    if ($confhash{$itemid}{'lcauth'} eq 'internal') {
                                        $resulttext .= '; '.&mt('a randomly generated password will be created');
                                    } elsif ($confhash{$itemid}{'lcauth'} eq 'localauth') {
                                        if ($confhash{$itemid}{'lcauthparm'} ne '') {
                                            $resulttext .= ' '.&mt('with argument: [_1]',$confhash{$itemid}{'lcauthparm'});
                                        }
                                    } else {
                                        $resulttext .= '; '.&mt('Kerberos domain: [_1]',$confhash{$itemid}{'lcauthparm'});
                                    }
                                }
                                $resulttext .= '</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('User account creation not permitted.').'</li>';
                            }
                        }
                        if (ref($confhash{$itemid}{'instdata'}) eq 'ARRAY') {
                            if (@{$confhash{$itemid}{'instdata'}} > 0) {
                                $resulttext .= '<li>'.&mt('Institutional data will be used when creating a new user for: [_1]',
                                                          join(', ',map { $fieldtitles{$_}; } @{$confhash{$itemid}{'instdata'}})).'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('No institutional data used when creating a new user.').'</li>';
                            }
                        }
                        foreach my $item ('topmenu','inlinemenu') {
                            $resulttext .= '<li>'.$lt{$item}.':&nbsp;';
                            if ($confhash{$itemid}{$item}) {
                                $resulttext .= &mt('Yes');
                            } else {
                                $resulttext .= &mt('No');
                            }
                            $resulttext .= '</li>';
                        }
                        if (ref($confhash{$itemid}{'lcmenu'}) eq 'ARRAY') {
                            if (@{$confhash{$itemid}{'lcmenu'}} > 0) {
                                $resulttext .= '<li>'.&mt('Menu items:').' '.
                                               join(', ', map { $menutitles{$_}; } (@{$confhash{$itemid}{'lcmenu'}})).'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('No menu items displayed in header or online menu').'</li>';
                            }
                        }
                        if ($confhash{$itemid}{'crsinc'}) {
                            if (ref($confhash{$itemid}{'maproles'}) eq 'HASH') {
                                my $rolemaps;
                                foreach my $role (@ltiroles) {
                                    if ($confhash{$itemid}{'maproles'}{$role}) {
                                        $rolemaps .= ('&nbsp;'x2).$role.'='.
                                                     &Apache::lonnet::plaintext($confhash{$itemid}{'maproles'}{$role},
                                                                                'Course').',';
                                    }
                                }
                                if ($rolemaps) {
                                    $rolemaps =~ s/,$//;
                                    $resulttext .= '<li>'.&mt('Role mapping:').$rolemaps.'</li>';
                                }
                            }
                            if ($confhash{$itemid}{'mapcrs'}) {
                                $resulttext .= '<li>'.&mt('Unique course identifier').': '.$confhash{$itemid}{'mapcrs'}.'</li>';
                            }
                            if (ref($confhash{$itemid}{'mapcrstype'}) eq 'ARRAY') {
                                if (@{$confhash{$itemid}{'mapcrstype'}} > 0) {
                                    $resulttext .= '<li>'.&mt('Mapping for the following LON-CAPA course types: [_1]',
                                                   join(', ',map { $coursetypetitles{$_}; } @coursetypes)).
                                                   '</li>';
                                } else {
                                    $resulttext .= '<li>'.&mt('No mapping to LON-CAPA courses').'</li>';
                                }
                            }
                            if ($confhash{$itemid}{'storecrs'}) {
                                $resulttext .= '<li>'.&mt('Store mapping of course identifier to LON-CAPA CourseID').': '.$confhash{$itemid}{'storecrs'}.'</li>';
                            }
                            if ($confhash{$itemid}{'makecrs'}) {
                                $resulttext .= '<li>'.&mt('Instructor may create course (if absent).').'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('Instructor may not create course (if absent).').'</li>';
                            }
                            if (ref($confhash{$itemid}{'selfenroll'}) eq 'ARRAY') {
                                if (@{$confhash{$itemid}{'selfenroll'}} > 0) {
                                    $resulttext .= '<li>'.&mt('Self-enrollment for following roles: [_1]',
                                                              join(', ',@{$confhash{$itemid}{'selfenroll'}})).
                                                   '</li>';
                                } else {
                                    $resulttext .= '<li>'.&mt('Self-enrollment not permitted').'</li>';
                                }
                            }
                            if ($confhash{$itemid}{'section'}) {
                                if ($confhash{$itemid}{'section'} eq 'course_section_sourcedid') {
                                    $resulttext .= '<li>'.&mt('User section from standard field:').
                                                         ' (course_section_sourcedid)'.'</li>';  
                                } else {
                                    $resulttext .= '<li>'.&mt('User section from:').' '.
                                                          $confhash{$itemid}{'section'}.'</li>';
                                }
                            } else {
                                $resulttext .= '<li>'.&mt('No section assignment').'</li>';
                            }
                            foreach my $item ('passback','roster','topmenu','inlinemenu') {
                                $resulttext .= '<li>'.$lt{$item}.':&nbsp;';
                                if ($confhash{$itemid}{$item}) {
                                    $resulttext .= &mt('Yes');
                                    if ($item eq 'passback') {
                                        if ($confhash{$itemid}{'passbackformat'} eq '1.0') {
                                            $resulttext .= '&nbsp;('.&mt('Outcomes Extension (1.0)').')';
                                        } elsif ($confhash{$itemid}{'passbackformat'} eq '1.1') {
                                            $resulttext .= '&nbsp;('.&mt('Outcomes Service (1.1)').')';
                                        }
                                    }
                                } else {
                                    $resulttext .= &mt('No');
                                }
                                $resulttext .= '</li>';
                            }
                            if (ref($confhash{$itemid}{'lcmenu'}) eq 'ARRAY') {
                                if (@{$confhash{$itemid}{'lcmenu'}} > 0) {
                                    $resulttext .= '<li>'.&mt('Menu items:').' '.
                                                   join(', ', map { $menutitles{$_}; } (@{$confhash{$itemid}{'lcmenu'}})).'</li>'; 
                                } else {
                                    $resulttext .= '<li>'.&mt('No menu items displayed in header or online menu').'</li>'; 
                                }
                            }
                        }
                    }
                    $resulttext .= '</ul></li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made.');
        }
    } else {
        $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
    }
    if ($errors) {
        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul>';
    }
    return $resulttext;
}

sub get_lti_id {
    my ($domain,$consumer) = @_;
    # get lock on lti db
    my $lockhash = {
                      lock => $env{'user.name'}.
                              ':'.$env{'user.domain'},
                   };
    my $tries = 0;
    my $gotlock = &Apache::lonnet::newput_dom('lti',$lockhash,$domain);
    my ($id,$error);

    while (($gotlock ne 'ok') && ($tries<10)) {
        $tries ++;
        sleep (0.1);
        $gotlock = &Apache::lonnet::newput_dom('lti',$lockhash,$domain);
    }
    if ($gotlock eq 'ok') {
        my %currids = &Apache::lonnet::dump_dom('lti',$domain);
        if ($currids{'lock'}) {
            delete($currids{'lock'});
            if (keys(%currids)) {
                my @curr = sort { $a <=> $b } keys(%currids);
                if ($curr[-1] =~ /^\d+$/) {
                    $id = 1 + $curr[-1];
                }
            } else {
                $id = 1;
            }
            if ($id) {
                unless (&Apache::lonnet::newput_dom('lti',{ $id => $consumer },$domain) eq 'ok') {
                    $error = 'nostore';
                }
            } else {
                $error = 'nonumber';
            }
        }
        my $dellockoutcome = &Apache::lonnet::del_dom('lti',['lock'],$domain);
    } else {
        $error = 'nolock';
    }
    return ($id,$error);
}

sub modify_autoenroll {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,%changes);
    my %currautoenroll;
    if (ref($domconfig{'autoenroll'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autoenroll'}})) {
            $currautoenroll{$key} = $domconfig{'autoenroll'}{$key};
        }
    }
    my $autorun = &Apache::lonnet::auto_run(undef,$dom),
    my %title = ( run => 'Auto-enrollment active',
                  sender => 'Sender for notification messages',
                  coowners => 'Automatic assignment of co-ownership to instructors of record (institutional data)',
                  autofailsafe => 'Failsafe for no drops if institutional data missing for a section');
    my @offon = ('off','on');
    my $sender_uname = $env{'form.sender_uname'};
    my $sender_domain = $env{'form.sender_domain'};
    if ($sender_domain eq '') {
        $sender_uname = '';
    } elsif ($sender_uname eq '') {
        $sender_domain = '';
    }
    my $coowners = $env{'form.autoassign_coowners'};
    my $autofailsafe = $env{'form.autoenroll_autofailsafe'};
    $autofailsafe =~ s{^\s+|\s+$}{}g;
    if ($autofailsafe =~ /\D/) {
        undef($autofailsafe);
    }
    my $failsafe = $env{'form.autoenroll_failsafe'};
    unless (($failsafe eq 'zero') || ($failsafe eq 'any')) {
        $failsafe = 'off';
        undef($autofailsafe);
    }
    my %autoenrollhash =  (
                       autoenroll => { 'run' => $env{'form.autoenroll_run'},
                                       'sender_uname' => $sender_uname,
                                       'sender_domain' => $sender_domain,
                                       'co-owners' => $coowners,
                                       'autofailsafe' => $autofailsafe,
                                       'failsafe' => $failsafe,
                                }
                     );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%autoenrollhash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (exists($currautoenroll{'run'})) {
             if ($currautoenroll{'run'} ne $env{'form.autoenroll_run'}) {
                 $changes{'run'} = 1;
             }
        } elsif ($autorun) {
            if ($env{'form.autoenroll_run'} ne '1') {
                 $changes{'run'} = 1;
            }
        }
        if ($currautoenroll{'sender_uname'} ne $sender_uname) {
            $changes{'sender'} = 1;
        }
        if ($currautoenroll{'sender_domain'} ne $sender_domain) {
            $changes{'sender'} = 1;
        }
        if ($currautoenroll{'co-owners'} ne '') {
            if ($currautoenroll{'co-owners'} ne $coowners) {
                $changes{'coowners'} = 1;
            }
        } elsif ($coowners) {
            $changes{'coowners'} = 1;
        }
        if ($currautoenroll{'autofailsafe'} ne $autofailsafe) {
            $changes{'autofailsafe'} = 1;
        }
        if ($currautoenroll{'failsafe'} ne $failsafe) {
            $changes{'failsafe'} = 1;
        }
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            if ($changes{'run'}) {
                $resulttext .= '<li>'.&mt("$title{'run'} set to $offon[$env{'form.autoenroll_run'}]").'</li>';
            }
            if ($changes{'sender'}) {
                if ($sender_uname eq '' || $sender_domain eq '') {
                    $resulttext .= '<li>'.&mt("$title{'sender'} set to default (course owner).").'</li>';
                } else {
                    $resulttext .= '<li>'.&mt("$title{'sender'} set to [_1]",$sender_uname.':'.$sender_domain).'</li>';
                }
            }
            if ($changes{'coowners'}) {
                $resulttext .= '<li>'.&mt("$title{'coowners'} set to $offon[$env{'form.autoassign_coowners'}]").'</li>';
                &Apache::loncommon::devalidate_domconfig_cache($dom);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domainconfig'} = 1;
                }
            }
            if ($changes{'autofailsafe'}) {
                if ($autofailsafe ne '') {
                    $resulttext .= '<li>'.&mt('Failsafe for no drops if institutional data missing for a section set to: [_1]',$autofailsafe).'</li>';
                } else {
                    $resulttext .= '<li>'.&mt('Failsafe for no drops if institutional data missing for a section not in use').'</li>';
                }
            }
            if ($changes{'failsafe'}) {
                if ($failsafe eq 'off') {
                    unless ($changes{'autofailsafe'}) {
                        $resulttext .= '<li>'.&mt('Failsafe for no drops if institutional data missing for a section not in use').'</li>';
                    }
                } elsif ($failsafe eq 'zero') {
                    $resulttext .= '<li>'.&mt('Failsafe applies if retrieved section enrollment is zero').'</li>';
                } else {
                    $resulttext .= '<li>'.&mt('Failsafe applies if retrieved section enrollment is zero or greater').'</li>';
                }
            }
            if (($changes{'autofailsafe'}) || ($changes{'failsafe'})) {
                &Apache::lonnet::get_domain_defaults($dom,1);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domdefaults'} = 1;
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to auto-enrollment settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
	    &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_autoupdate {
    my ($dom,%domconfig) = @_;
    my ($resulttext,%currautoupdate,%fields,%changes);
    if (ref($domconfig{'autoupdate'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autoupdate'}})) {
            $currautoupdate{$key} = $domconfig{'autoupdate'}{$key};
        }
    }
    my @offon = ('off','on');
    my %title = &Apache::lonlocal::texthash (
                    run        => 'Auto-update:',
                    classlists => 'Updates to user information in classlists?',
                    unexpired  => 'Skip updates for users without active or future roles?',
                    lastactive => 'Skip updates for inactive users?',
                );
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    my %fieldtitles = &Apache::lonlocal::texthash (
                        id => 'Student/Employee ID',
                        permanentemail => 'E-mail address',
                        lastname => 'Last Name',
                        firstname => 'First Name',
                        middlename => 'Middle Name',
                        generation => 'Generation',
                      );
    $othertitle = &mt('All users');
    if (keys(%{$usertypes}) >  0) {
        $othertitle = &mt('Other users');
    }
    foreach my $key (keys(%env)) {
        if ($key =~ /^form\.updateable_(.+)_([^_]+)$/) {
            my ($usertype,$item) = ($1,$2);
            if (grep(/^\Q$item\E$/,keys(%fieldtitles))) {
                if ($usertype eq 'default') {   
                    push(@{$fields{$1}},$2);
                } elsif (ref($types) eq 'ARRAY') {
                    if (grep(/^\Q$usertype\E$/,@{$types})) {
                        push(@{$fields{$1}},$2);
                    }
                }
            }
        }
    }
    my @lockablenames = &Apache::loncommon::get_env_multiple('form.lockablenames');
    @lockablenames = sort(@lockablenames);
    if (ref($currautoupdate{'lockablenames'}) eq 'ARRAY') {
        my @changed = &Apache::loncommon::compare_arrays($currautoupdate{'lockablenames'},\@lockablenames);
        if (@changed) {
            $changes{'lockablenames'} = 1;
        }
    } else {
        if (@lockablenames) {
            $changes{'lockablenames'} = 1;
        }
    }
    my %updatehash = (
                      autoupdate => { run => $env{'form.autoupdate_run'},
                                      classlists => $env{'form.classlists'},
                                      unexpired  => $env{'form.unexpired'},
                                      fields => {%fields},
                                      lockablenames => \@lockablenames,
                                    }
                     );
    my $lastactivedays;
    if ($env{'form.lastactive'}) {
        $lastactivedays = $env{'form.lastactivedays'};
        $lastactivedays =~ s/^\s+|\s+$//g;
        unless ($lastactivedays =~ /^\d+$/) {
            undef($lastactivedays);
            $env{'form.lastactive'} = 0;
        }
    }
    $updatehash{'autoupdate'}{'lastactive'} = $lastactivedays;
    foreach my $key (keys(%currautoupdate)) {
        if (($key eq 'run') || ($key eq 'classlists') || ($key eq 'unexpired') || ($key eq 'lastactive')) {
            if (exists($updatehash{autoupdate}{$key})) {
                if ($currautoupdate{$key} ne $updatehash{autoupdate}{$key}) {
                    $changes{$key} = 1;
                }
            }
        } elsif ($key eq 'fields') {
            if (ref($currautoupdate{$key}) eq 'HASH') {
                foreach my $item (@{$types},'default') {
                    if (ref($currautoupdate{$key}{$item}) eq 'ARRAY') {
                        my $change = 0;
                        foreach my $type (@{$currautoupdate{$key}{$item}}) {
                            if (!exists($fields{$item})) {
                                $change = 1;
                                last;
                            } elsif (ref($fields{$item}) eq 'ARRAY') {
                                if (!grep(/^\Q$type\E$/,@{$fields{$item}})) {
                                    $change = 1;
                                    last;
                                }
                            }
                        }
                        if ($change) {
                            push(@{$changes{$key}},$item);
                        }
                    } 
                }
            }
        } elsif ($key eq 'lockablenames') {
            if (ref($currautoupdate{$key}) eq 'ARRAY') {
                my @changed = &Apache::loncommon::compare_arrays($currautoupdate{'lockablenames'},\@lockablenames);
                if (@changed) {
                    $changes{'lockablenames'} = 1;
                }
            } else {
                if (@lockablenames) {
                    $changes{'lockablenames'} = 1;
                }
            }
        }
    }
    unless (grep(/^\Qlockablenames\E$/,keys(%currautoupdate))) {
        if (@lockablenames) {
            $changes{'lockablenames'} = 1;
        }
    }
    unless (grep(/^unexpired$/,keys(%currautoupdate))) {
        if ($updatehash{'autoupdate'}{'unexpired'}) {
            $changes{'unexpired'} = 1;
        }
    }
    unless (grep(/^lastactive$/,keys(%currautoupdate))) {
        if ($updatehash{'autoupdate'}{'lastactive'} ne '') {
            $changes{'lastactive'} = 1;
        }
    }
    foreach my $item (@{$types},'default') {
        if (defined($fields{$item})) {
            if (ref($currautoupdate{'fields'}) eq 'HASH') {
                if (ref($currautoupdate{'fields'}{$item}) eq 'ARRAY') {
                    my $change = 0;
                    if (ref($fields{$item}) eq 'ARRAY') {
                        foreach my $type (@{$fields{$item}}) {
                            if (!grep(/^\Q$type\E$/,@{$currautoupdate{'fields'}{$item}})) {
                                $change = 1;
                                last;
                            }
                        }
                    }
                    if ($change) {
                        push(@{$changes{'fields'}},$item);
                    }
                } else {
                    push(@{$changes{'fields'}},$item);
                }
            } else {
                push(@{$changes{'fields'}},$item);
            }
        }
    }
    my $putresult = &Apache::lonnet::put_dom('configuration',\%updatehash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $key (sort(keys(%changes))) {
                if ($key eq 'lockablenames') {
                    $resulttext .= '<li>';
                    if (@lockablenames) {
                        $usertypes->{'default'} = $othertitle;
                        $resulttext .= &mt("User preference to disable replacement of user's name with institutional data (by auto-update), available for the following affiliations:").' '.
                                   join(', ', map { $usertypes->{$_}; } @lockablenames).'</li>';
                    } else {
                        $resulttext .= &mt("User preference to disable replacement of user's name with institutional data (by auto-update) is unavailable.");
                    }
                    $resulttext .= '</li>';
                } elsif (ref($changes{$key}) eq 'ARRAY') {
                    foreach my $item (@{$changes{$key}}) {
                        my @newvalues;
                        foreach my $type (@{$fields{$item}}) {
                            push(@newvalues,$fieldtitles{$type});
                        }
                        my $newvaluestr;
                        if (@newvalues > 0) {
                            $newvaluestr = join(', ',@newvalues);
                        } else {
                            $newvaluestr = &mt('none');
                        }
                        if ($item eq 'default') {
                            $resulttext .= '<li>'.&mt("Updates for '[_1]' set to: '[_2]'",$othertitle,$newvaluestr).'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt("Updates for '[_1]' set to: '[_2]'",$usertypes->{$item},$newvaluestr).'</li>';
                        }
                    }
                } else {
                    my $newvalue;
                    if ($key eq 'run') {
                        $newvalue = $offon[$env{'form.autoupdate_run'}];
                    } elsif ($key eq 'lastactive') {
                        $newvalue = $offon[$env{'form.lastactive'}];
                        unless ($lastactivedays eq '') {
                            $newvalue .= '; '.&mt('inactive = no activity in last [quant,_1,day]',$lastactivedays);
                        }
                    } else {
                        $newvalue = $offon[$env{'form.'.$key}];
                    }
                    $resulttext .= '<li>'.&mt("[_1] set to $newvalue",$title{$key}).'</li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to autoupdates');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
	    &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_autocreate {
    my ($dom,%domconfig) = @_;
    my ($resulttext,%changes,%currautocreate,%newvals,%autocreatehash);
    if (ref($domconfig{'autocreate'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autocreate'}})) {
            $currautocreate{$key} = $domconfig{'autocreate'}{$key};
        }
    }
    my %title= ( xml => 'Auto-creation of courses in XML course description files',
                 req => 'Auto-creation of validated requests for official courses',
                 xmldc => 'Identity of course creator of courses from XML files',
               );
    my @types = ('xml','req');
    foreach my $item (@types) {
        $newvals{$item} = $env{'form.autocreate_'.$item};
        $newvals{$item} =~ s/\D//g;
        $newvals{$item} = 0 if ($newvals{$item} eq '');
    }
    $newvals{'xmldc'} = $env{'form.autocreate_xmldc'};
    my %domcoords = &Apache::lonnet::get_active_domroles($dom,['dc']);
    unless (exists($domcoords{$newvals{'xmldc'}})) {
        $newvals{'xmldc'} = '';
    } 
    %autocreatehash =  (
                        autocreate => { xml => $newvals{'xml'},
                                        req => $newvals{'req'},
                                      }
                       );
    if ($newvals{'xmldc'} ne '') {
        $autocreatehash{'autocreate'}{'xmldc'} = $newvals{'xmldc'};
    }
    my $putresult = &Apache::lonnet::put_dom('configuration',\%autocreatehash,
                                             $dom);
    if ($putresult eq 'ok') {
        my @items = @types;
        if ($newvals{'xml'}) {
            push(@items,'xmldc');
        }
        foreach my $item (@items) {
            if (exists($currautocreate{$item})) {
                if ($currautocreate{$item} ne $newvals{$item}) {
                    $changes{$item} = 1;
                }
            } elsif ($newvals{$item}) {
                $changes{$item} = 1;
            }
        }
        if (keys(%changes) > 0) {
            my @offon = ('off','on'); 
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $item (@types) {
                if ($changes{$item}) {
                    my $newtxt = $offon[$newvals{$item}];
                    $resulttext .= '<li>'.
                                   &mt("$title{$item} set to [_1]$newtxt [_2]",
                                       '<b>','</b>').
                                   '</li>';
                }
            }
            if ($changes{'xmldc'}) {
                my ($dcname,$dcdom) = split(':',$newvals{'xmldc'});
                my $newtxt = &Apache::loncommon::plainname($dcname,$dcdom);
                $resulttext .= '<li>'.&mt("$title{'xmldc'} set to [_1]",'<b>'.$newtxt.'</b>').'</li>'; 
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to auto-creation settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_directorysrch {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,%changes);
    my %currdirsrch;
    if (ref($domconfig{'directorysrch'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'directorysrch'}})) {
            $currdirsrch{$key} = $domconfig{'directorysrch'}{$key};
        }
    }
    my %title = ( available => 'Institutional directory search available',
                  localonly => 'Other domains can search institution',
                  lcavailable => 'LON-CAPA directory search available',
                  lclocalonly => 'Other domains can search LON-CAPA domain',
                  searchby => 'Search types',
                  searchtypes => 'Search latitude');
    my @offon = ('off','on');
    my @otherdoms = ('Yes','No');

    my @searchtypes = &Apache::loncommon::get_env_multiple('form.searchtypes');  
    my @cansearch = &Apache::loncommon::get_env_multiple('form.cansearch');
    my @searchby = &Apache::loncommon::get_env_multiple('form.searchby');

    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    if (keys(%{$usertypes}) == 0) {
        @cansearch = ('default');
    } else {
        if (ref($currdirsrch{'cansearch'}) eq 'ARRAY') {
            foreach my $type (@{$currdirsrch{'cansearch'}}) {
                if (!grep(/^\Q$type\E$/,@cansearch)) {
                    push(@{$changes{'cansearch'}},$type);
                }
            }
            foreach my $type (@cansearch) {
                if (!grep(/^\Q$type\E$/,@{$currdirsrch{'cansearch'}})) {
                    push(@{$changes{'cansearch'}},$type);
                }
            }
        } else {
            push(@{$changes{'cansearch'}},@cansearch);
        }
    }

    if (ref($currdirsrch{'searchby'}) eq 'ARRAY') {
        foreach my $by (@{$currdirsrch{'searchby'}}) {
            if (!grep(/^\Q$by\E$/,@searchby)) {
                push(@{$changes{'searchby'}},$by);
            }
        }
        foreach my $by (@searchby) {
            if (!grep(/^\Q$by\E$/,@{$currdirsrch{'searchby'}})) {
                push(@{$changes{'searchby'}},$by);
            }
        }
    } else {
        push(@{$changes{'searchby'}},@searchby);
    }

    if (ref($currdirsrch{'searchtypes'}) eq 'ARRAY') {
        foreach my $type (@{$currdirsrch{'searchtypes'}}) {
            if (!grep(/^\Q$type\E$/,@searchtypes)) {
                push(@{$changes{'searchtypes'}},$type);
            }
        }
        foreach my $type (@searchtypes) {
            if (!grep(/^\Q$type\E$/,@{$currdirsrch{'searchtypes'}})) {
                push(@{$changes{'searchtypes'}},$type);
            }
        }
    } else {
        if (exists($currdirsrch{'searchtypes'})) {
            foreach my $type (@searchtypes) {  
                if ($type ne $currdirsrch{'searchtypes'}) { 
                    push(@{$changes{'searchtypes'}},$type);
                }
            }
            if (!grep(/^\Q$currdirsrch{'searchtypes'}\E/,@searchtypes)) {
                push(@{$changes{'searchtypes'}},$currdirsrch{'searchtypes'});
            }   
        } else {
            push(@{$changes{'searchtypes'}},@searchtypes); 
        }
    }

    my %dirsrch_hash =  (
            directorysrch => { available => $env{'form.dirsrch_available'},
                               cansearch => \@cansearch,
                               localonly => $env{'form.dirsrch_instlocalonly'},
                               lclocalonly => $env{'form.dirsrch_domlocalonly'},
                               lcavailable => $env{'form.dirsrch_domavailable'},
                               searchby => \@searchby,
                               searchtypes => \@searchtypes,
                             }
            );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%dirsrch_hash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (exists($currdirsrch{'available'})) {
             if ($currdirsrch{'available'} ne $env{'form.dirsrch_available'}) {
                 $changes{'available'} = 1;
             }
        } else {
            if ($env{'form.dirsrch_available'} eq '1') {
                $changes{'available'} = 1;
            }
        }
        if (exists($currdirsrch{'lcavailable'})) {
            if ($currdirsrch{'lcavailable'} ne $env{'form.dirsrch_domavailable'}) {
                $changes{'lcavailable'} = 1;
            }
        } else {
            if ($env{'form.dirsrch_lcavailable'} eq '1') {
                $changes{'lcavailable'} = 1;
            }
        }
        if (exists($currdirsrch{'localonly'})) {
            if ($currdirsrch{'localonly'} ne $env{'form.dirsrch_instlocalonly'}) {
                $changes{'localonly'} = 1;
            }
        } else {
            if ($env{'form.dirsrch_instlocalonly'} eq '1') {
                $changes{'localonly'} = 1;
            }
        }
        if (exists($currdirsrch{'lclocalonly'})) {
            if ($currdirsrch{'lclocalonly'} ne $env{'form.dirsrch_domlocalonly'}) {
                $changes{'lclocalonly'} = 1;
            }
        } else {
            if ($env{'form.dirsrch_domlocalonly'} eq '1') {
                $changes{'lclocalonly'} = 1;
            }
        }
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            if ($changes{'available'}) {
                $resulttext .= '<li>'.&mt("$title{'available'} set to: $offon[$env{'form.dirsrch_available'}]").'</li>';
            }
            if ($changes{'lcavailable'}) {
                $resulttext .= '<li>'.&mt("$title{'lcavailable'} set to: $offon[$env{'form.dirsrch_domavailable'}]").'</li>';
            }
            if ($changes{'localonly'}) {
                $resulttext .= '<li>'.&mt("$title{'localonly'} set to: $otherdoms[$env{'form.dirsrch_instlocalonly'}]").'</li>';
            }
            if ($changes{'lclocalonly'}) {
                $resulttext .= '<li>'.&mt("$title{'lclocalonly'} set to: $otherdoms[$env{'form.dirsrch_domlocalonly'}]").'</li>';
            }
            if (ref($changes{'cansearch'}) eq 'ARRAY') {
                my $chgtext;
                if (ref($usertypes) eq 'HASH') {
                    if (keys(%{$usertypes}) > 0) {
                        foreach my $type (@{$types}) {
                            if (grep(/^\Q$type\E$/,@cansearch)) {
                                $chgtext .= $usertypes->{$type}.'; ';
                            }
                        }
                        if (grep(/^default$/,@cansearch)) {
                            $chgtext .= $othertitle;
                        } else {
                            $chgtext =~ s/\; $//;
                        }
                        $resulttext .=
                            '<li>'.
                            &mt("Users from domain '[_1]' permitted to search the institutional directory set to: [_2]",
                                '<span class="LC_cusr_emph">'.$dom.'</span>',$chgtext).
                            '</li>';
                    }
                }
            }
            if (ref($changes{'searchby'}) eq 'ARRAY') {
                my ($searchtitles,$titleorder) = &sorted_searchtitles();
                my $chgtext;
                foreach my $type (@{$titleorder}) {
                    if (grep(/^\Q$type\E$/,@searchby)) {
                        if (defined($searchtitles->{$type})) {
                            $chgtext .= $searchtitles->{$type}.'; ';
                        }
                    }
                }
                $chgtext =~ s/\; $//;
                $resulttext .= '<li>'.&mt("$title{'searchby'} set to: [_1]",$chgtext).'</li>';
            }
            if (ref($changes{'searchtypes'}) eq 'ARRAY') {
                my ($srchtypes_desc,$srchtypeorder) = &sorted_searchtypes(); 
                my $chgtext;
                foreach my $type (@{$srchtypeorder}) {
                    if (grep(/^\Q$type\E$/,@searchtypes)) {
                        if (defined($srchtypes_desc->{$type})) {
                            $chgtext .= $srchtypes_desc->{$type}.'; ';
                        }
                    }
                }
                $chgtext =~ s/\; $//;
                $resulttext .= '<li>'.&mt($title{'searchtypes'}.' set to: "[_1]"',$chgtext).'</li>';
            }
            $resulttext .= '</ul>';
            &Apache::lonnet::do_cache_new('directorysrch',$dom,$dirsrch_hash{'directorysrch'},3600);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'directorysrch'} = 1;
            }
        } else {
            $resulttext = &mt('No changes made to directory search settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
                      &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_contacts {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,%currsetting,%newsetting,%changes,%contacts_hash);
    if (ref($domconfig{'contacts'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'contacts'}})) {
            $currsetting{$key} = $domconfig{'contacts'}{$key};
        }
    }
    my (%others,%to,%bcc,%includestr,%includeloc);
    my @contacts = ('supportemail','adminemail');
    my @mailings = ('errormail','packagesmail','helpdeskmail','otherdomsmail',
                    'lonstatusmail','requestsmail','updatesmail','idconflictsmail','hostipmail');
    my @toggles = ('reporterrors','reportupdates','reportstatus');
    my @lonstatus = ('threshold','sysmail','weights','excluded');
    my ($fields,$fieldtitles,$fieldoptions,$possoptions) = &helpform_fields();
    foreach my $type (@mailings) {
        @{$newsetting{$type}} = 
            &Apache::loncommon::get_env_multiple('form.'.$type);
        foreach my $item (@contacts) {
            if (grep(/^\Q$item\E$/,@{$newsetting{$type}})) {
                $contacts_hash{contacts}{$type}{$item} = 1;
            } else {
                $contacts_hash{contacts}{$type}{$item} = 0;
            }
        }
        $others{$type} = $env{'form.'.$type.'_others'};
        $contacts_hash{contacts}{$type}{'others'} = $others{$type};
        if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
            $bcc{$type} = $env{'form.'.$type.'_bcc'};
            $contacts_hash{contacts}{$type}{'bcc'} = $bcc{$type};
            if (($env{'form.'.$type.'_includestr'} ne '') && ($env{'form.'.$type.'_includeloc'} =~ /^s|b$/)) {
                $includestr{$type} = $env{'form.'.$type.'_includestr'};
                $includeloc{$type} = $env{'form.'.$type.'_includeloc'};
                $contacts_hash{contacts}{$type}{'include'} = $includeloc{$type}.':'.&escape($includestr{$type});
            }
        }
    }
    foreach my $item (@contacts) {
        $to{$item} = $env{'form.'.$item};
        $contacts_hash{'contacts'}{$item} = $to{$item};
    }
    foreach my $item (@toggles) {
        if ($env{'form.'.$item} =~ /^(0|1)$/) {
            $contacts_hash{'contacts'}{$item} = $env{'form.'.$item};
        }
    }
    my ($lonstatus_defs,$lonstatus_names) = &Apache::loncommon::lon_status_items();
    foreach my $item (@lonstatus) {
        if ($item eq 'excluded') {
            my (%serverhomes,@excluded);
            map { $serverhomes{$_} = 1; } values(%Apache::lonnet::serverhomeIDs);
            my @possexcluded = &Apache::loncommon::get_env_multiple('form.errorexcluded');
            if (@possexcluded) {
                foreach my $id (sort(@possexcluded)) {
                    if ($serverhomes{$id}) {
                        push(@excluded,$id);
                    }
                }
            }
            if (@excluded) {
                $contacts_hash{'contacts'}{'lonstatus'}{$item} = \@excluded;
            }
        } elsif ($item eq 'weights') {
            foreach my $type ('E','W','N','U') {
                $env{'form.error'.$item.'_'.$type} =~ s/^\s+|\s+$//g;
                if ($env{'form.error'.$item.'_'.$type} =~ /^\d+$/) {
                    unless ($env{'form.error'.$item.'_'.$type} == $lonstatus_defs->{$type}) {
                        $contacts_hash{'contacts'}{'lonstatus'}{$item}{$type} =
                            $env{'form.error'.$item.'_'.$type};
                    }
                }
            }
        } elsif (($item eq 'threshold') || ($item eq 'sysmail')) {
            $env{'form.error'.$item} =~ s/^\s+|\s+$//g;
            if ($env{'form.error'.$item} =~ /^\d+$/) {
                unless ($env{'form.error'.$item} == $lonstatus_defs->{$item}) {
                    $contacts_hash{'contacts'}{'lonstatus'}{$item} = $env{'form.error'.$item};
                }
            }
        }
    }
    if ((ref($fields) eq 'ARRAY') && (ref($possoptions) eq 'HASH')) {
        foreach my $field (@{$fields}) {
            if (ref($possoptions->{$field}) eq 'ARRAY') {
                my $value = $env{'form.helpform_'.$field};
                $value =~ s/^\s+|\s+$//g;
                if (grep(/^\Q$value\E$/,@{$possoptions->{$field}})) {
                    $contacts_hash{'contacts'}{'helpform'}{$field} = $value;
                    if ($field eq 'screenshot') {
                        $env{'form.helpform_maxsize'} =~ s/^\s+|\s+$//g;
                        if ($env{'form.helpform_maxsize'} =~ /^\d+\.?\d*$/) {
                            $contacts_hash{'contacts'}{'helpform'}{'maxsize'} = $env{'form.helpform_maxsize'};
                        }
                    }
                }
            }
        }
    }
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    my (@statuses,%usertypeshash,@overrides);
    if ((ref($types) eq 'ARRAY') && (@{$types} > 0)) {
        @statuses = @{$types};
        if (ref($usertypes) eq 'HASH') {
            %usertypeshash = %{$usertypes};
        }
    }
    if (@statuses) {
        my @possoverrides = &Apache::loncommon::get_env_multiple('form.overrides');
        foreach my $type (@possoverrides) {
            if (($type ne '') && (grep(/^\Q$type\E$/,@statuses))) {
                push(@overrides,$type);
            }
        }
        if (@overrides) {
            foreach my $type (@overrides) {
                my @standard = &Apache::loncommon::get_env_multiple('form.override_'.$type);
                foreach my $item (@contacts) {
                    if (grep(/^\Q$item\E$/,@standard)) {
                        $contacts_hash{'contacts'}{'overrides'}{$type}{$item} = 1;
                        $newsetting{'override_'.$type}{$item} = 1;
                    } else {
                        $contacts_hash{'contacts'}{'overrides'}{$type}{$item} = 0;
                        $newsetting{'override_'.$type}{$item} = 0;
                    }
                }
                $contacts_hash{'contacts'}{'overrides'}{$type}{'others'} = $env{'form.override_'.$type.'_others'};
                $contacts_hash{'contacts'}{'overrides'}{$type}{'bcc'} = $env{'form.override_'.$type.'_bcc'};
                $newsetting{'override_'.$type}{'others'} = $env{'form.override_'.$type.'_others'};
                $newsetting{'override_'.$type}{'bcc'} = $env{'form.override_'.$type.'_bcc'};
                if (($env{'form.override_'.$type.'_includestr'} ne '') && ($env{'form.override_'.$type.'_includeloc'} =~ /^s|b$/)) {
                    $includestr{$type} = $env{'form.override_'.$type.'_includestr'};
                    $includeloc{$type} = $env{'form.override_'.$type.'_includeloc'};
                    $contacts_hash{'contacts'}{'overrides'}{$type}{'include'} = $includeloc{$type}.':'.&escape($includestr{$type});
                    $newsetting{'override_'.$type}{'include'} = $contacts_hash{'contacts'}{'overrides'}{$type}{'include'};
                }
            }     
        }
    }
    if (keys(%currsetting) > 0) {
        foreach my $item (@contacts) {
            if ($to{$item} ne $currsetting{$item}) {
                $changes{$item} = 1;
            }
        }
        foreach my $type (@mailings) {
            foreach my $item (@contacts) {
                if (ref($currsetting{$type}) eq 'HASH') {
                    if ($currsetting{$type}{$item} ne $contacts_hash{contacts}{$type}{$item}) {
                        push(@{$changes{$type}},$item);
                    }
                } else {
                    push(@{$changes{$type}},@{$newsetting{$type}});
                }
            }
            if ($others{$type} ne $currsetting{$type}{'others'}) {
                push(@{$changes{$type}},'others');
            }
            if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                if ($bcc{$type} ne $currsetting{$type}{'bcc'}) {
                    push(@{$changes{$type}},'bcc'); 
                }
                my ($currloc,$currstr) = split(/:/,$currsetting{$type}{'include'},2);
                if (($includeloc{$type} ne $currloc) || (&escape($includestr{$type}) ne $currstr)) {
                    push(@{$changes{$type}},'include');
                }
            }
        }
        if (ref($fields) eq 'ARRAY') {
            if (ref($currsetting{'helpform'}) eq 'HASH') {
                foreach my $field (@{$fields}) {
                    if ($currsetting{'helpform'}{$field} ne $contacts_hash{'contacts'}{'helpform'}{$field}) {
                        push(@{$changes{'helpform'}},$field);
                    }
                    if (($field eq 'screenshot') && ($contacts_hash{'contacts'}{'helpform'}{'screenshot'} ne 'no')) {
                        if ($currsetting{'helpform'}{'maxsize'} ne $contacts_hash{'contacts'}{'helpform'}{'maxsize'}) {
                            push(@{$changes{'helpform'}},'maxsize');
                        }
                    }
                }
            } else {
                foreach my $field (@{$fields}) {
                    if ($contacts_hash{'contacts'}{'helpform'}{$field} ne 'yes') {
                        push(@{$changes{'helpform'}},$field);
                    }
                    if (($field eq 'screenshot') && ($contacts_hash{'contacts'}{'helpform'}{'screenshot'} ne 'no')) {
                        if ($contacts_hash{'contacts'}{'helpform'}{'maxsize'} != 1) {
                            push(@{$changes{'helpform'}},'maxsize');
                        }
                    }
                }
            }
        }
        if (@statuses) {
            if (ref($currsetting{'overrides'}) eq 'HASH') { 
                foreach my $key (keys(%{$currsetting{'overrides'}})) {
                    if (ref($currsetting{'overrides'}{$key}) eq 'HASH') {
                        if (ref($newsetting{'override_'.$key}) eq 'HASH') {
                            foreach my $item (@contacts,'bcc','others','include') {
                                if ($currsetting{'overrides'}{$key}{$item} ne $newsetting{'override_'.$key}{$item}) { 
                                    push(@{$changes{'overrides'}},$key);
                                    last;
                                }
                            }
                        } else {
                            push(@{$changes{'overrides'}},$key);
                        }
                    }
                }
                foreach my $key (@overrides) {
                    unless (exists($currsetting{'overrides'}{$key})) {
                        push(@{$changes{'overrides'}},$key);
                    }
                }
            } else {
                foreach my $key (@overrides) {
                    push(@{$changes{'overrides'}},$key); 
                }
            }
        }
        if (ref($currsetting{'lonstatus'}) eq 'HASH') {
            foreach my $key ('excluded','weights','threshold','sysmail') {
                if ($key eq 'excluded') {
                    if ((ref($contacts_hash{contacts}{lonstatus}) eq 'HASH') &&
                        (ref($contacts_hash{contacts}{lonstatus}{excluded}) eq 'ARRAY')) {
                        if ((ref($currsetting{'lonstatus'}{$key}) eq 'ARRAY') &&
                            (@{$currsetting{'lonstatus'}{$key}})) {
                            my @diffs =
                                &Apache::loncommon::compare_arrays($contacts_hash{contacts}{lonstatus}{excluded},
                                                                   $currsetting{'lonstatus'}{$key});
                            if (@diffs) {
                                push(@{$changes{'lonstatus'}},$key);
                            }
                        } elsif (@{$contacts_hash{contacts}{lonstatus}{excluded}}) {
                            push(@{$changes{'lonstatus'}},$key);
                        }
                    } elsif ((ref($currsetting{'lonstatus'}{$key}) eq 'ARRAY') &&
                             (@{$currsetting{'lonstatus'}{$key}})) {
                        push(@{$changes{'lonstatus'}},$key);
                    }
                } elsif ($key eq 'weights') {
                    if ((ref($contacts_hash{contacts}{lonstatus}) eq 'HASH') &&
                        (ref($contacts_hash{contacts}{lonstatus}{$key}) eq 'HASH')) {
                        if (ref($currsetting{'lonstatus'}{$key}) eq 'HASH') {
                            foreach my $type ('E','W','N','U') {
                                unless ($contacts_hash{contacts}{lonstatus}{$key}{$type} eq
                                        $currsetting{'lonstatus'}{$key}{$type}) {
                                    push(@{$changes{'lonstatus'}},$key);
                                    last;
                                }
                            }
                        } else {
                            foreach my $type ('E','W','N','U') {
                                if ($contacts_hash{contacts}{lonstatus}{$key}{$type} ne '') {
                                    push(@{$changes{'lonstatus'}},$key);
                                    last;
                                }
                            }
                        }
                    } elsif (ref($currsetting{'lonstatus'}{$key}) eq 'HASH') {
                        foreach my $type ('E','W','N','U') {
                            if ($currsetting{'lonstatus'}{$key}{$type} ne '') {
                                push(@{$changes{'lonstatus'}},$key);
                                last;
                            }
                        }
                    }
                } elsif (($key eq 'threshold') || ($key eq 'sysmail')) {
                    if (ref($contacts_hash{contacts}{lonstatus}) eq 'HASH') {
                        if ($currsetting{'lonstatus'}{$key} =~ /^\d+$/) {
                            if ($currsetting{'lonstatus'}{$key} != $contacts_hash{contacts}{lonstatus}{$key}) {
                                push(@{$changes{'lonstatus'}},$key);
                            }
                        } elsif ($contacts_hash{contacts}{lonstatus}{$key} =~ /^\d+$/) {
                            push(@{$changes{'lonstatus'}},$key);
                        }
                    } elsif ($currsetting{'lonstatus'}{$key} =~ /^\d+$/) {
                        push(@{$changes{'lonstatus'}},$key);
                    }
                }
            }
        } else {
            if (ref($contacts_hash{contacts}{lonstatus}) eq 'HASH') {
                foreach my $key ('excluded','weights','threshold','sysmail') {
                    if (exists($contacts_hash{contacts}{lonstatus}{$key})) {
                        push(@{$changes{'lonstatus'}},$key);
                    }
                }
            }
        }
    } else {
        my %default;
        $default{'supportemail'} = $Apache::lonnet::perlvar{'lonSupportEMail'};
        $default{'adminemail'} = $Apache::lonnet::perlvar{'lonAdmEMail'};
        $default{'errormail'} = 'adminemail';
        $default{'packagesmail'} = 'adminemail';
        $default{'helpdeskmail'} = 'supportemail';
        $default{'otherdomsmail'} = 'supportemail';
        $default{'lonstatusmail'} = 'adminemail';
        $default{'requestsmail'} = 'adminemail';
        $default{'updatesmail'} = 'adminemail';
        $default{'hostipmail'} = 'adminemail';
        foreach my $item (@contacts) {
           if ($to{$item} ne $default{$item}) {
               $changes{$item} = 1;
           }
        }
        foreach my $type (@mailings) {
            if ((@{$newsetting{$type}} != 1) || ($newsetting{$type}[0] ne $default{$type})) {
                push(@{$changes{$type}},@{$newsetting{$type}});
            }
            if ($others{$type} ne '') {
                push(@{$changes{$type}},'others');
            }
            if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                if ($bcc{$type} ne '') {
                    push(@{$changes{$type}},'bcc');
                }
                if (($includeloc{$type} =~ /^b|s$/) && ($includestr{$type} ne '')) {
                    push(@{$changes{$type}},'include');
                }
            }
        }
        if (ref($fields) eq 'ARRAY') {
            foreach my $field (@{$fields}) {
                if ($contacts_hash{'contacts'}{'helpform'}{$field} ne 'yes') {
                    push(@{$changes{'helpform'}},$field);
                }
                if (($field eq 'screenshot') && ($contacts_hash{'contacts'}{'helpform'}{'screenshot'} ne 'no')) {
                    if ($contacts_hash{'contacts'}{'helpform'}{'maxsize'} != 1) {
                        push(@{$changes{'helpform'}},'maxsize');
                    }
                }
            }
        }
        if (ref($contacts_hash{contacts}{lonstatus}) eq 'HASH') {
            foreach my $key ('excluded','weights','threshold','sysmail') {
                if (exists($contacts_hash{contacts}{lonstatus}{$key})) {
                    push(@{$changes{'lonstatus'}},$key);
                }
            }
        }
    }
    foreach my $item (@toggles) {
        if (($env{'form.'.$item} == 1) && ($currsetting{$item} == 0)) {
            $changes{$item} = 1;
        } elsif ((!$env{'form.'.$item}) &&
                 (($currsetting{$item} eq '') || ($currsetting{$item} == 1))) {
            $changes{$item} = 1;
        }
    }
    my $putresult = &Apache::lonnet::put_dom('configuration',\%contacts_hash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            &Apache::loncommon::devalidate_domconfig_cache($dom);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domainconfig'} = 1;
            }
            my ($titles,$short_titles)  = &contact_titles();
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $item (@contacts) {
                if ($changes{$item}) {
                    $resulttext .= '<li>'.$titles->{$item}.
                                    &mt(' set to: ').
                                    '<span class="LC_cusr_emph">'.
                                    $to{$item}.'</span></li>';
                }
            }
            foreach my $type (@mailings) {
                if (ref($changes{$type}) eq 'ARRAY') {
                    if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                        $resulttext .= '<li>'.$titles->{$type}.' -- '.&mt('sent to').': ';
                    } else {
                        $resulttext .= '<li>'.$titles->{$type}.': ';
                    }
                    my @text;
                    foreach my $item (@{$newsetting{$type}}) {
                        push(@text,$short_titles->{$item});
                    }
                    if ($others{$type} ne '') {
                        push(@text,$others{$type});
                    }
                    if (@text) {
                        $resulttext .= '<span class="LC_cusr_emph">'.
                                       join(', ',@text).'</span>';
                    }
                    if (($type eq 'helpdeskmail') || ($type eq 'otherdomsmail')) {
                        if ($bcc{$type} ne '') {
                            my $bcctext;
                            if (@text) {
                                $bcctext = '&nbsp;'.&mt('with Bcc to');
                            } else {
                                $bcctext = '(Bcc)';
                            }
                            $resulttext .= $bcctext.': <span class="LC_cusr_emph">'.$bcc{$type}.'</span>';
                        } elsif (!@text) {
                            $resulttext .= &mt('No one');
                        }   
                        if ($includestr{$type} ne '') {
                            if ($includeloc{$type} eq 'b') {
                                $resulttext .= '<br />'.&mt('Text automatically added to e-mail body:').' '.$includestr{$type};
                            } elsif ($includeloc{$type} eq 's') {
                                $resulttext .= '<br />'.&mt('Text automatically added to e-mail subject:').' '.$includestr{$type};
                            }
                        }
                    } elsif (!@text) {
                        $resulttext .= &mt('No recipients');
                    }
                    $resulttext .= '</li>';
                }
            }
            if (ref($changes{'overrides'}) eq 'ARRAY') {
                my @deletions;
                foreach my $type (@{$changes{'overrides'}}) {
                    if ($usertypeshash{$type}) {
                        if (grep(/^\Q$type\E/,@overrides)) {
                            $resulttext .= '<li>'.&mt("Overrides based on requester's affiliation set for [_1]",
                                                      $usertypeshash{$type}).'<ul><li>';
                            if (ref($newsetting{'override_'.$type}) eq 'HASH') {
                                my @text;
                                foreach my $item (@contacts) {
                                    if ($newsetting{'override_'.$type}{$item}) { 
                                        push(@text,$short_titles->{$item});
                                    }
                                }
                                if ($newsetting{'override_'.$type}{'others'} ne '') {
                                    push(@text,$newsetting{'override_'.$type}{'others'});
                                }
  
                                if (@text) {
                                    $resulttext .= &mt('Helpdesk e-mail sent to: [_1]',
                                                       '<span class="LC_cusr_emph">'.join(', ',@text).'</span>');
                                }
                                if ($newsetting{'override_'.$type}{'bcc'} ne '') {
                                    my $bcctext;
                                    if (@text) {
                                        $bcctext = '&nbsp;'.&mt('with Bcc to');
                                    } else {
                                        $bcctext = '(Bcc)';
                                    }
                                    $resulttext .= $bcctext.': <span class="LC_cusr_emph">'.$newsetting{'override_'.$type}{'bcc'}.'</span>';
                                } elsif (!@text) {
                                     $resulttext .= &mt('Helpdesk e-mail sent to no one');
                                }
                                $resulttext .= '</li>';
                                if ($newsetting{'override_'.$type}{'include'} ne '') {
                                    my ($loc,$str) = split(/:/,$newsetting{'override_'.$type}{'include'});
                                    if ($loc eq 'b') {
                                        $resulttext .= '<li>'.&mt('Text automatically added to e-mail body:').' '.&unescape($str).'</li>';
                                    } elsif ($loc eq 's') {
                                        $resulttext .= '<li>'.&mt('Text automatically added to e-mail subject:').' '.&unescape($str).'</li>';
                                    }
                                }
                            }
                            $resulttext .= '</li></ul></li>';
                        } else {
                            push(@deletions,$usertypeshash{$type});
                        }
                    }
                }
                if (@deletions) {
                    $resulttext .= '<li>'.&mt("Overrides based on requester's affiliation discontinued for: [_1]",
                                              join(', ',@deletions)).'</li>';
                }
            }
            my @offon = ('off','on');
            my $corelink = &core_link_msu();
            if ($changes{'reporterrors'}) {
                $resulttext .= '<li>'.
                               &mt('E-mail error reports to [_1] set to "'.
                                   $offon[$env{'form.reporterrors'}].'".',
                                   $corelink).
                               '</li>';
            }
            if ($changes{'reportupdates'}) {
                $resulttext .= '<li>'.
                                &mt('E-mail record of completed LON-CAPA updates to [_1] set to "'.
                                    $offon[$env{'form.reportupdates'}].'".',
                                    $corelink).
                                '</li>';
            }
            if ($changes{'reportstatus'}) {
                $resulttext .= '<li>'.
                                &mt('E-mail status if errors above threshold to [_1] set to "'.
                                    $offon[$env{'form.reportstatus'}].'".',
                                    $corelink).
                                '</li>';
            }
            if (ref($changes{'lonstatus'}) eq 'ARRAY') {
                $resulttext .= '<li>'.
                               &mt('Nightly status check e-mail settings').':<ul>';
                my (%defval,%use_def,%shown);
                $defval{'threshold'} = $lonstatus_defs->{'threshold'};
                $defval{'sysmail'} = $lonstatus_defs->{'sysmail'};
                $defval{'weights'} =
                    join(', ',map { $lonstatus_names->{$_}.'='.$lonstatus_defs->{$_}; } ('E','W','N','U'));
                $defval{'excluded'} = &mt('None');
                if (ref($contacts_hash{'contacts'}{'lonstatus'}) eq 'HASH') {
                    foreach my $item ('threshold','sysmail','weights','excluded') {
                        if (exists($contacts_hash{'contacts'}{'lonstatus'}{$item})) {
                            if (($item eq 'threshold') || ($item eq 'sysmail')) {
                                $shown{$item} = $contacts_hash{'contacts'}{'lonstatus'}{$item};
                            } elsif ($item eq 'weights') {
                                if (ref($contacts_hash{'contacts'}{'lonstatus'}{$item}) eq 'HASH') {
                                    foreach my $type ('E','W','N','U') {
                                        $shown{$item} .= $lonstatus_names->{$type}.'=';
                                        if (exists($contacts_hash{'contacts'}{'lonstatus'}{$item}{$type})) {
                                            $shown{$item} .= $contacts_hash{'contacts'}{'lonstatus'}{$item}{$type};
                                        } else {
                                            $shown{$item} .= $lonstatus_defs->{$type};
                                        }
                                        $shown{$item} .= ', ';
                                    }
                                    $shown{$item} =~ s/, $//;
                                } else {
                                    $shown{$item} = $defval{$item};
                                }
                            } elsif ($item eq 'excluded') {
                                if (ref($contacts_hash{'contacts'}{'lonstatus'}{$item}) eq 'ARRAY') {
                                    $shown{$item} = join(', ',@{$contacts_hash{'contacts'}{'lonstatus'}{$item}});
                                } else {
                                    $shown{$item} = $defval{$item};
                                }
                            }
                        } else {
                            $shown{$item} = $defval{$item};
                        }
                    }
                } else {
                    foreach my $item ('threshold','weights','excluded','sysmail') {
                        $shown{$item} = $defval{$item};
                    }
                }
                foreach my $item ('threshold','weights','excluded','sysmail') {
                    $resulttext .= '<li>'.&mt($titles->{'error'.$item}.' -- [_1]',
                                          $shown{$item}).'</li>';
                }
                $resulttext .= '</ul></li>';
            }
            if ((ref($changes{'helpform'}) eq 'ARRAY') && (ref($fields) eq 'ARRAY')) {
                my (@optional,@required,@unused,$maxsizechg);
                foreach my $field (@{$changes{'helpform'}}) {
                    if ($field eq 'maxsize') {
                        $maxsizechg = 1;
                        next;
                    }
                    if ($contacts_hash{'contacts'}{'helpform'}{$field} eq 'yes') {
                        push(@optional,$field);
                    } elsif ($contacts_hash{'contacts'}{'helpform'}{$field} eq 'no') {
                        push(@unused,$field);
                    } elsif ($contacts_hash{'contacts'}{'helpform'}{$field} eq 'req') {
                        push(@required,$field);
                    }
                }
                if (@optional) {
                    $resulttext .= '<li>'.
                                   &mt('Help form fields changed to "Optional": [_1].',
                                       '<span class="LC_cusr_emph">'.join(', ',map { $fieldtitles->{$_}; } @optional)).'</span>'.
                                   '</li>';
                }
                if (@required) {
                    $resulttext .= '<li>'.
                                   &mt('Help form fields changed to "Required": [_1].',
                                       '<span class="LC_cusr_emph">'.join(', ',map { $fieldtitles->{$_}; } @required)).'</span>'.
                                   '</li>';
                }
                if (@unused) {
                    $resulttext .= '<li>'.
                                   &mt('Help form fields changed to "Not shown": [_1].',
                                       '<span class="LC_cusr_emph">'.join(', ',map { $fieldtitles->{$_}; } @unused)).'</span>'.
                                   '</li>';
                }
                if ($maxsizechg) {
                    $resulttext .= '<li>'.
                                   &mt('Max size for file uploaded to help form by logged-in user set to [_1] MB.',
                                       $contacts_hash{'contacts'}{'helpform'}{'maxsize'}).
                                   '</li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to contacts and form settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1].',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_privacy {
    my ($dom,%domconfig) = @_;
    my ($resulttext,%current,%changes);
    if (ref($domconfig{'privacy'}) eq 'HASH') {
        %current = %{$domconfig{'privacy'}};
    }
    my @fields = ('lastname','firstname','middlename','generation','permanentemail','id');
    my @items = ('domain','author','course','community');
    my %names = &Apache::lonlocal::texthash (
                   domain => 'Assigned domain role(s)',
                   author => 'Assigned co-author role(s)',
                   course => 'Assigned course role(s)',
                   community => 'Assigned community role',
                );
    my %roles = &Apache::lonlocal::texthash (
                   domain => 'Domain role',
                   author => 'Co-author role',
                   course => 'Course role',
                   community => 'Community role',
                );
    my %titles = &Apache::lonlocal::texthash (
                  approval => 'Approval for role in different domain',
                  othdom   => 'User information available in other domain',
                  priv     => 'Information viewable by privileged user in same domain',
                  unpriv   => 'Information viewable by unprivileged user in same domain',
                  instdom  => 'Other domain shares institution/provider',
                  extdom   => 'Other domain has different institution/provider',
                  none     => 'Not allowed',
                  user     => 'User authorizes',
                  domain   => 'Domain Coordinator authorizes',
                  auto     => 'Unrestricted',
    );
    my %fieldnames = &Apache::lonlocal::texthash (
                        id => 'Student/Employee ID',
                        permanentemail => 'E-mail address',
                        lastname => 'Last Name',
                        firstname => 'First Name',
                        middlename => 'Middle Name',
                        generation => 'Generation',
    );
    my ($othertitle,$usertypes,$types) =
        &Apache::loncommon::sorted_inst_types($dom);
    my (%by_ip,%by_location,@intdoms,@instdoms);
    &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);

    my %privacyhash = (
                       'approval' => {
                                       instdom => {},
                                       extdom  => {},
                                     },
                       'othdom'   => {},
                       'priv'     => {},
                       'unpriv'   => {},
                      );
    foreach my $item (@items) {
        if (@instdoms > 1) {
            if ($env{'form.privacy_approval_instdom'.$item} =~ /^(none|user|domain|auto)$/) {
                $privacyhash{'approval'}{'instdom'}{$item} = $env{'form.privacy_approval_instdom_'.$item};
            }
            if (ref($current{'approval'}) eq 'HASH') {
                if (ref($current{'approval'}{'instdom'}) eq 'HASH') {
                    unless ($privacyhash{'approval'}{'instdom'}{$item} eq $current{'approval'}{'instdom'}{$item}) {
                        $changes{'approval'} = 1;
                    }
                }
            } elsif ($privacyhash{'approval'}{'instdom'}{$item} ne 'auto') {
                $changes{'approval'} = 1;
            }
        }
        if (keys(%by_location) > 0) {
            if ($env{'form.privacy_approval_extdom_'.$item} =~ /^(none|user|domain|auto)$/) {
                $privacyhash{'approval'}{'extdom'}{$item} = $env{'form.privacy_approval_extdom_'.$item};
            }
            if (ref($current{'approval'}) eq 'HASH') {
                if (ref($current{'approval'}{'extdom'}) eq 'HASH') {
                    unless ($privacyhash{'approval'}{'extdom'}{$item} eq $current{'approval'}{'extdom'}{$item}) {
                        $changes{'approval'} = 1;
                    }
                }
            } elsif ($privacyhash{'approval'}{'extdom'}{$item} ne 'auto') {
                $changes{'approval'} = 1;
            }
        }
        foreach my $status ('priv','unpriv') {
            my @possibles = sort(&Apache::loncommon::get_env_multiple('form.privacy_'.$status.'_'.$item));
            my @newvalues;
            foreach my $field (@possibles) {
                if (grep(/^\Q$field\E$/,@fields)) {
                    $privacyhash{$status}{$item}{$field} = 1;
                    push(@newvalues,$field);
                }
            }
            @newvalues = sort(@newvalues);
            if (ref($current{$status}) eq 'HASH') {
                if (ref($current{$status}{$item}) eq 'HASH') {
                    my @currvalues = sort(keys(%{$current{$status}{$item}}));
                    my @diffs = &Apache::loncommon::compare_arrays(\@currvalues,\@newvalues);
                    if (@diffs > 0) {
                        $changes{$status} = 1;
                    }
                }
            } else {
                my @stdfields;
                foreach my $field (@fields) {
                    if ($field eq 'id') {
                        next if ($status eq 'unpriv');
                        next if (($status eq 'priv') && ($item eq 'community'));
                    }
                    push(@stdfields,$field);
                }
                my @diffs = &Apache::loncommon::compare_arrays(\@stdfields,\@newvalues);
                if (@diffs > 0) {
                    $changes{$status} = 1;
                }
            }
        }
    }
    if ((@instdoms > 1) || (keys(%by_location) > 0)) {
        my @statuses;
        if (ref($types) eq 'ARRAY') {
            @statuses = @{$types};
        }
        foreach my $type (@statuses,'default') {
            my @possfields = &Apache::loncommon::get_env_multiple('form.privacy_othdom_'.$type);
            my @newvalues;
            foreach my $field (sort(@possfields)) {
                if (grep(/^\Q$field\E$/,@fields)) {
                    $privacyhash{'othdom'}{$type}{$field} = 1;
                    push(@newvalues,$field);
                }
            }
            @newvalues = sort(@newvalues);
            if (ref($current{'othdom'}) eq 'HASH') {
                if (ref($current{'othdom'}{$type}) eq 'HASH') {
                    my @currvalues = sort(keys(%{$current{'othdom'}{$type}}));
                    my @diffs = &Apache::loncommon::compare_arrays(\@currvalues,\@newvalues);
                    if (@diffs > 0) {
                        $changes{'othdom'} = 1;
                    }
                }
            } else {
                my @stdfields = ('lastname','firstname','middlename','generation','permanentemail');
                my @diffs = &Apache::loncommon::compare_arrays(\@stdfields,\@newvalues);
                if (@diffs > 0) {
                    $changes{'othdom'} = 1;
                }
            }
        }
    }
    my %confighash = (
                        privacy => \%privacyhash,
                     );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%confighash,$dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made: ').'<ul>';
            foreach my $key ('approval','othdom','priv','unpriv') {
                if ($changes{$key}) {
                    $resulttext .= '<li>'.$titles{$key}.':<ul>';
                    if ($key eq 'approval') {
                        if (keys(%{$privacyhash{$key}{instdom}})) {
                            $resulttext .= '<li>'.$titles{'instdom'}.'<ul>';
                            foreach my $item (@items) {
                                $resulttext .=  '<li>'.$roles{$item}.': '.$titles{$privacyhash{$key}{instdom}{$item}}.'</li>';
                            }
                            $resulttext .= '</ul></li>';
                        }
                        if (keys(%{$privacyhash{$key}{extdom}})) {
                            $resulttext .= '<li>'.$titles{'extdom'}.'<ul>';
                            foreach my $item (@items) {
                                $resulttext .=  '<li>'.$roles{$item}.': '.$titles{$privacyhash{$key}{extdom}{$item}}.'</li>';
                            }
                            $resulttext .= '</ul></li>';
                        }
                    } elsif ($key eq 'othdom') {
                        my @statuses;
                        if (ref($types) eq 'ARRAY') {
                            @statuses = @{$types};
                        }
                        if (ref($privacyhash{$key}) eq 'HASH') {
                            foreach my $status (@statuses,'default') {
                                if ($status eq 'default') {
                                    $resulttext .= '<li>'.$othertitle.': ';
                                } elsif (ref($usertypes) eq 'HASH') {
                                    $resulttext .= '<li>'.$usertypes->{$status}.': ';
                                } else {
                                    next;
                                }
                                if (ref($privacyhash{$key}{$status}) eq 'HASH') {
                                    if (keys(%{$privacyhash{$key}{$status}})) {
                                        $resulttext .= join(', ', map { $fieldnames{$_}; } (sort(keys(%{$privacyhash{$key}{$status}}))));
                                    } else {
                                        $resulttext .= &mt('none');
                                    }
                                }
                                $resulttext .= '</li>';
                            }
                        }
                    } else {
                        foreach my $item (@items) {
                            if (ref($privacyhash{$key}{$item}) eq 'HASH') {
                                $resulttext .= '<li>'.$names{$item}.': ';
                                if (keys(%{$privacyhash{$key}{$item}})) {
                                    $resulttext .= join(', ', map { $fieldnames{$_}; } (sort(keys(%{$privacyhash{$key}{$item}}))));
                                } else {
                                    $resulttext .= &mt('none');
                                }
                                $resulttext .= '</li>';
                            }
                        }
                    }
                    $resulttext .= '</ul></li>';
                }
            }
        } else {
            $resulttext = &mt('No changes made to user information settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_passwords {
    my ($r,$dom,$confname,$lastactref,%domconfig) = @_;
    my ($resulttext,%current,%changes,%newvalues,@oktypes,$errors,
        $updatedefaults,$updateconf);
    my $customfn = 'resetpw.html';
    if (ref($domconfig{'passwords'}) eq 'HASH') {
        %current = %{$domconfig{'passwords'}};
    }
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    if (ref($types) eq 'ARRAY') {
        @oktypes = @{$types};
    }
    push(@oktypes,'default');

    my %titles = &Apache::lonlocal::texthash (
        intauth_cost   => 'Encryption cost for bcrypt (positive integer)',
        intauth_check  => 'Check bcrypt cost if authenticated',
        intauth_switch => 'Existing crypt-based switched to bcrypt on authentication',
        permanent      => 'Permanent e-mail address',
        critical       => 'Critical notification address',
        notify         => 'Notification address',
        min            => 'Minimum password length',
        max            => 'Maximum password length',
        chars          => 'Required characters',
        expire         => 'Password expiration (days)',
        numsaved       => 'Number of previous passwords to save',
        reset          => 'Resetting Forgotten Password',
        intauth        => 'Encryption of Stored Passwords (Internal Auth)',
        rules          => 'Rules for LON-CAPA Passwords',
        crsownerchg    => 'Course Owner Changing Student Passwords',
        username       => 'Username',
        email          => 'E-mail address',
    );

#
# Retrieve current domain configuration for internal authentication from $domconfig{'defaults'}.
#
    my (%curr_defaults,%save_defaults);
    if (ref($domconfig{'defaults'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'defaults'}})) {
            if ($key =~ /^intauth_(cost|check|switch)$/) {
                $curr_defaults{$key} = $domconfig{'defaults'}{$key};
            } else {
                $save_defaults{$key} = $domconfig{'defaults'}{$key};
            }
        }
    }
    my %staticdefaults = (
        'resetlink'      => 2,
        'resetcase'      => \@oktypes,
        'resetprelink'   => 'both',
        'resetemail'     => ['critical','notify','permanent'],
        'intauth_cost'   => 10,
        'intauth_check'  => 0,
        'intauth_switch' => 0,
    );
    $staticdefaults{'min'} = $Apache::lonnet::passwdmin;
    foreach my $type (@oktypes) {
        $staticdefaults{'resetpostlink'}{$type} = ['email','username'];
    }
    my $linklife = $env{'form.passwords_link'};
    $linklife =~ s/^\s+|\s+$//g;
    if (($linklife =~ /^\d+(|\.\d*)$/) && ($linklife > 0)) {
        $newvalues{'resetlink'} = $linklife;
        if ($current{'resetlink'}) {
            if ($current{'resetlink'} ne $linklife) {
                $changes{'reset'} = 1;
            }
        } elsif (!ref($domconfig{passwords}) eq 'HASH') {
            if ($staticdefaults{'resetlink'} ne $linklife) {
                $changes{'reset'} = 1;
            }
        }
    } elsif ($current{'resetlink'}) {
        $changes{'reset'} = 1;
    }
    my @casesens;
    my @posscase = &Apache::loncommon::get_env_multiple('form.passwords_case_sensitive');
    foreach my $case (sort(@posscase)) {
        if (grep(/^\Q$case\E$/,@oktypes)) {
            push(@casesens,$case);
        }
    }
    $newvalues{'resetcase'} = \@casesens;
    if (ref($current{'resetcase'}) eq 'ARRAY') {
        my @diffs = &Apache::loncommon::compare_arrays($current{'resetcase'},\@casesens);
        if (@diffs > 0) {
            $changes{'reset'} = 1;
        }
    } elsif (!ref($domconfig{passwords}) eq 'HASH') {
        my @diffs = &Apache::loncommon::compare_arrays($staticdefaults{'resetcase'},\@casesens);
        if (@diffs > 0) {
            $changes{'reset'} = 1;
        }
    }
    if ($env{'form.passwords_prelink'} =~ /^(both|either)$/) {
        $newvalues{'resetprelink'} = $env{'form.passwords_prelink'};
        if (exists($current{'resetprelink'})) {
            if ($current{'resetprelink'} ne $newvalues{'resetprelink'}) {
                $changes{'reset'} = 1;
            }
        } elsif (!ref($domconfig{passwords}) eq 'HASH') {
            if ($staticdefaults{'resetprelink'} ne $newvalues{'resetprelink'}) {
                $changes{'reset'} = 1;
            }
        }
    } elsif ($current{'resetprelink'}) {
        $changes{'reset'} = 1;
    }
    foreach my $type (@oktypes) {
        my @possplink = &Apache::loncommon::get_env_multiple('form.passwords_postlink_'.$type);
        my @postlink;
        foreach my $item (sort(@possplink)) {
            if ($item =~ /^(email|username)$/) {
                push(@postlink,$item);
            }
        }
        $newvalues{'resetpostlink'}{$type} = \@postlink;
        unless ($changes{'reset'}) {
            if (ref($current{'resetpostlink'}) eq 'HASH') {
                if (ref($current{'resetpostlink'}{$type}) eq 'ARRAY') {
                    my @diffs = &Apache::loncommon::compare_arrays($current{'resetpostlink'}{$type},\@postlink);
                    if (@diffs > 0) {
                        $changes{'reset'} = 1;
                    }
                } else {
                    $changes{'reset'} = 1;
                }
            } elsif (!ref($domconfig{passwords}) eq 'HASH') {
                my @diffs = &Apache::loncommon::compare_arrays($staticdefaults{'resetpostlink'}{$type},\@postlink);
                if (@diffs > 0) {
                    $changes{'reset'} = 1;
                }
            }
        }
    }
    my @possemailsrc = &Apache::loncommon::get_env_multiple('form.passwords_emailsrc');
    my @resetemail;
    foreach my $item (sort(@possemailsrc)) {
        if ($item =~ /^(permanent|critical|notify)$/) {
            push(@resetemail,$item);
        }
    }
    $newvalues{'resetemail'} = \@resetemail;
    unless ($changes{'reset'}) {
        if (ref($current{'resetemail'}) eq 'ARRAY') {
            my @diffs = &Apache::loncommon::compare_arrays($current{'resetemail'},\@resetemail);
            if (@diffs > 0) {
                $changes{'reset'} = 1;
            }
        } elsif (!ref($domconfig{passwords}) eq 'HASH') {
            my @diffs = &Apache::loncommon::compare_arrays($staticdefaults{'resetemail'},\@resetemail);
            if (@diffs > 0) {
                $changes{'reset'} = 1;
            }
        }
    }
    if ($env{'form.passwords_stdtext'} == 0) {
        $newvalues{'resetremove'} = 1;
        unless ($current{'resetremove'}) {
            $changes{'reset'} = 1;
        }
    } elsif ($current{'resetremove'}) {
        $changes{'reset'} = 1;
    }
    if ($env{'form.passwords_customfile.filename'} ne '') {
        my $servadm = $r->dir_config('lonAdmEMail');
        my ($configuserok,$author_ok,$switchserver) =
            &config_check($dom,$confname,$servadm);
        my $error;
        if ($configuserok eq 'ok') {
            if ($switchserver) {
                $error = &mt("Upload of file containing domain-specific text is not permitted to this server: [_1]",$switchserver);
            } else {
                if ($author_ok eq 'ok') {
                    my ($result,$customurl) =
                        &publishlogo($r,'upload','passwords_customfile',$dom,
                                     $confname,'customtext/resetpw','','',$customfn);
                    if ($result eq 'ok') {
                        $newvalues{'resetcustom'} = $customurl;
                        $changes{'reset'} = 1;
                    } else {
                        $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$customfn,$result);
                    }
                } else {
                    $error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$customfn,$confname,$dom,$author_ok);
                }
            }
        } else {
            $error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$customfn,$confname,$dom,$configuserok);
        }
        if ($error) {
            &Apache::lonnet::logthis($error);
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    } elsif ($current{'resetcustom'}) {
        if ($env{'form.passwords_custom_del'}) {
            $changes{'reset'} = 1;
        } else {
            $newvalues{'resetcustom'} = $current{'resetcustom'};
        }
    }
    $env{'form.intauth_cost'} =~ s/^\s+|\s+$//g;
    if (($env{'form.intauth_cost'} ne '') && ($env{'form.intauth_cost'} =~ /^\d+$/)) {
        $save_defaults{'intauth_cost'} = $env{'form.intauth_cost'};
        if ($save_defaults{'intauth_cost'} ne $curr_defaults{'intauth_cost'}) {
            $changes{'intauth'} = 1;
        }
    } else {
        $save_defaults{'intauth_cost'} = $curr_defaults{'intauth_cost'};
    }
    if ($env{'form.intauth_check'} =~ /^(0|1|2)$/) {
        $save_defaults{'intauth_check'} = $env{'form.intauth_check'};
        if ($save_defaults{'intauth_check'} ne $curr_defaults{'intauth_check'}) {
            $changes{'intauth'} = 1;
        }
    } else {
        $save_defaults{'intauth_check'} = $curr_defaults{'intauth_check'};
    }
    if ($env{'form.intauth_switch'} =~ /^(0|1|2)$/) {
        $save_defaults{'intauth_switch'} = $env{'form.intauth_switch'};
        if ($save_defaults{'intauth_switch'} ne $curr_defaults{'intauth_switch'}) {
            $changes{'intauth'} = 1;
        }
    } else {
        $save_defaults{'intauth_check'} = $curr_defaults{'intauth_check'};
    }
    foreach my $item ('cost','check','switch') {
        if ($save_defaults{'intauth_'.$item} ne $domdefaults{'intauth_'.$item}) {
            $domdefaults{'intauth_'.$item} = $save_defaults{'intauth_'.$item};
            $updatedefaults = 1;
        }
    }
    foreach my $rule ('min','max','expire','numsaved') {
        $env{'form.passwords_'.$rule} =~ s/^\s+|\s+$//g;
        my $ruleok;
        if ($rule eq 'expire') {
            if (($env{'form.passwords_'.$rule} =~ /^\d+(|\.\d*)$/) &&
                ($env{'form.passwords_'.$rule} ne '0')) {
                $ruleok = 1;
            }
        } elsif ($rule eq 'min') {
            if ($env{'form.passwords_'.$rule} =~ /^\d+$/) {
                if ($env{'form.passwords_'.$rule} >= $Apache::lonnet::passwdmin) {
                    $ruleok = 1;
                }
            }
        } elsif (($env{'form.passwords_'.$rule} =~ /^\d+$/) &&
                 ($env{'form.passwords_'.$rule} ne '0')) {
            $ruleok = 1;
        }
        if ($ruleok) {
            $newvalues{$rule} = $env{'form.passwords_'.$rule};
            if (exists($current{$rule})) {
                if ($newvalues{$rule} ne $current{$rule}) {
                    $changes{'rules'} = 1;
                }
            } elsif ($rule eq 'min') {
                if ($staticdefaults{$rule} ne $newvalues{$rule}) {
                    $changes{'rules'} = 1;
                }
            } else {
                $changes{'rules'} = 1;
            }
        } elsif (exists($current{$rule})) {
            $changes{'rules'} = 1;
        }
    }
    my @posschars = &Apache::loncommon::get_env_multiple('form.passwords_chars');
    my @chars;
    foreach my $item (sort(@posschars)) {
        if ($item =~ /^(uc|lc|num|spec)$/) {
            push(@chars,$item);
        }
    }
    $newvalues{'chars'} = \@chars;
    unless ($changes{'rules'}) {
        if (ref($current{'chars'}) eq 'ARRAY') {
            my @diffs = &Apache::loncommon::compare_arrays($current{'chars'},\@chars);
            if (@diffs > 0) {
                $changes{'rules'} = 1;
            }
        } else {
            if (@chars > 0) {
                $changes{'rules'} = 1;
            }
        }
    }
    my %crsownerchg = (
                        by => [],
                        for => [],
                      );
    foreach my $item ('by','for') {
        my @posstypes = &Apache::loncommon::get_env_multiple('form.passwords_crsowner_'.$item);
        foreach my $type (sort(@posstypes)) {
            if (grep(/^\Q$type\E$/,@oktypes)) {
                push(@{$crsownerchg{$item}},$type);
            }
        }
    }
    $newvalues{'crsownerchg'} = \%crsownerchg;
    if (ref($current{'crsownerchg'}) eq 'HASH') {
        foreach my $item ('by','for') {
            if (ref($current{'crsownerchg'}{$item}) eq 'ARRAY') {
                my @diffs = &Apache::loncommon::compare_arrays($current{'crsownerchg'}{$item},$crsownerchg{$item});
                if (@diffs > 0) {
                    $changes{'crsownerchg'} = 1;
                    last;
                }
            }
        }
    } elsif (!(ref($domconfig{passwords}) eq 'HASH')) {
        foreach my $item ('by','for') {
            if (@{$crsownerchg{$item}} > 0) {
                $changes{'crsownerchg'} = 1;
                last;
            }
        }
    }

    my %confighash = (
                        defaults  => \%save_defaults,
                        passwords => \%newvalues,
                     );
    &process_captcha('passwords',\%changes,$confighash{'passwords'},$domconfig{'passwords'});

    my $putresult = &Apache::lonnet::put_dom('configuration',\%confighash,$dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made: ').'<ul>';
            foreach my $key ('reset','intauth','rules','crsownerchg') {
                if ($changes{$key}) {
                    unless ($key eq 'intauth') {
                        $updateconf = 1;
                    }
                    $resulttext .= '<li>'.$titles{$key}.':<ul>';
                    if ($key eq 'reset') {
                        if ($confighash{'passwords'}{'captcha'} eq 'original') {
                            $resulttext .= '<li>'.&mt('CAPTCHA validation set to use: original CAPTCHA').'</li>';
                        } elsif ($confighash{'passwords'}{'captcha'} eq 'recaptcha') {
                            $resulttext .= '<li>'.&mt('CAPTCHA validation set to use: reCAPTCHA').' '.
                                           &mt('version: [_1]',$confighash{'passwords'}{'recaptchaversion'}).'<br />';
                            if (ref($confighash{'passwords'}{'recaptchakeys'}) eq 'HASH') {
                                $resulttext .= &mt('Public key: [_1]',$confighash{'passwords'}{'recaptchakeys'}{'public'}).'</br>'.
                                               &mt('Private key: [_1]',$confighash{'passwords'}{'recaptchakeys'}{'private'}).'</li>';
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('No CAPTCHA validation').'</li>';
                        }
                        if ($confighash{'passwords'}{'resetlink'}) {
                            $resulttext .= '<li>'.&mt('Reset link expiration set to [quant,_1,hour]',$confighash{'passwords'}{'resetlink'}).'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('No reset link expiration set.').' '.
                                                  &mt('Will default to 2 hours').'</li>';
                        }
                        if (ref($confighash{'passwords'}{'resetcase'}) eq 'ARRAY') {
                            if (@{$confighash{'passwords'}{'resetcase'}} == 0) {
                                $resulttext .= '<li>'.&mt('User input for username and/or e-mail address not case sensitive for "Forgot Password" web form').'</li>';
                            } else {
                                my $casesens;
                                foreach my $type (@{$confighash{'passwords'}{'resetcase'}}) {
                                    if ($type eq 'default') {
                                        $casesens .= $othertitle.', ';
                                    } elsif ($usertypes->{$type} ne '') {
                                        $casesens .= $usertypes->{$type}.', ';
                                    }
                                }
                                $casesens =~ s/\Q, \E$//;
                                $resulttext .= '<li>'.&mt('"Forgot Password" web form input for username and/or e-mail address is case-sensitive for: [_1]',$casesens).'</li>';
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('Case-sensitivity not set for "Forgot Password" web form').' '.&mt('Will default to case-sensitive for username and/or e-mail address for all').'</li>';
                        }
                        if ($confighash{'passwords'}{'resetprelink'} eq 'either') {
                            $resulttext .= '<li>'.&mt('Users can enter either a username or an e-mail address in "Forgot Password" web form').'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('Users can enter both a username and an e-mail address in "Forgot Password" web form').'</li>';
                        }
                        if (ref($confighash{'passwords'}{'resetpostlink'}) eq 'HASH') {
                            my $output;
                            if (ref($types) eq 'ARRAY') {
                                foreach my $type (@{$types}) {
                                    if (ref($confighash{'passwords'}{'resetpostlink'}{$type}) eq 'ARRAY') {
                                        if (@{$confighash{'passwords'}{'resetpostlink'}{$type}} == 0) {
                                            $output .= $usertypes->{$type}.' -- '.&mt('none');
                                        } else {
                                            $output .= $usertypes->{$type}.' -- '.
                                                       join(', ',map { $titles{$_}; } (@{$confighash{'passwords'}{'resetpostlink'}{$type}})).'; ';
                                        }
                                    }
                                }
                            }
                            if (ref($confighash{'passwords'}{'resetpostlink'}{'default'}) eq 'ARRAY') {
                                if (@{$confighash{'passwords'}{'resetpostlink'}{'default'}} == 0) {
                                    $output .= $othertitle.' -- '.&mt('none');
                                } else {
                                    $output .= $othertitle.' -- '.
                                               join(', ',map { $titles{$_}; } (@{$confighash{'passwords'}{'resetpostlink'}{'default'}}));
                                }
                            }
                            if ($output) {
                                $resulttext .= '<li>'.&mt('Information required for new password form (by user type) set to: [_1]',$output).'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('Information required for new password form not set.').' '.&mt('Will default to requiring both the username and an e-mail address').'</li>';
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('Information required for new password form not set.').' '.&mt('Will default to requiring both the username and an e-mail address').'</li>';
                        }
                        if (ref($confighash{'passwords'}{'resetemail'}) eq 'ARRAY') {
                            if (@{$confighash{'passwords'}{'resetemail'}} > 0) {
                                $resulttext .= '<li>'.&mt('E-mail address(es) in LON-CAPA used for verification will include: [_1]',join(', ',map { $titles{$_}; } @{$confighash{'passwords'}{'resetemail'}})).'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('E-mail address(es) in LON-CAPA used for verification will include: [_1]',join(', ',map { $titles{$_}; } @{$staticdefaults{'resetemail'}})).'</li>';
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('E-mail address(es) in LON-CAPA used for verification will include: [_1]',join(', ',map { $titles{$_}; } @{$staticdefaults{'resetemail'}})).'</li>';
                        }
                        if ($confighash{'passwords'}{'resetremove'}) {
                            $resulttext .= '<li>'.&mt('Preamble to "Forgot Password" web form not shown').'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('Preamble to "Forgot Password" web form is shown').'</li>';
                        }
                        if ($confighash{'passwords'}{'resetcustom'}) {
                            my $customlink = &Apache::loncommon::modal_link($confighash{'passwords'}{'resetcustom'},
                                                                            &mt('custom text'),600,500,undef,undef,
                                                                            undef,undef,'background-color:#ffffff');
                            $resulttext .= '<li>'.&mt('Preamble to "Forgot Password" form includes: [_1]',$customlink).'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('No custom text included in preamble to "Forgot Password" form').'</li>';
                        }
                    } elsif ($key eq 'intauth') {
                        foreach my $item ('cost','switch','check') {
                            my $value = $save_defaults{$key.'_'.$item};
                            if ($item eq 'switch') {
                                my %optiondesc = &Apache::lonlocal::texthash (
                                                     0 => 'No',
                                                     1 => 'Yes',
                                                     2 => 'Yes, and copy existing passwd file to passwd.bak file',
                                                 );
                                if ($value =~ /^(0|1|2)$/) {
                                    $value = $optiondesc{$value};
                                } else {
                                    $value = &mt('none -- defaults to No');
                                }
                            } elsif ($item eq 'check') {
                                my %optiondesc = &Apache::lonlocal::texthash (
                                                     0 => 'No',
                                                     1 => 'Yes, allow login then update passwd file using default cost (if higher)',
                                                     2 => 'Yes, disallow login if stored cost is less than domain default',
                                                 );
                                if ($value =~ /^(0|1|2)$/) {
                                    $value = $optiondesc{$value};
                                } else {
                                    $value = &mt('none -- defaults to No');
                                }
                            }
                            $resulttext .= '<li>'.&mt('[_1] set to "[_2]"',$titles{$key.'_'.$item},$value).'</li>';
                        }
                    } elsif ($key eq 'rules') {
                        foreach my $rule ('min','max','expire','numsaved') {
                            if ($confighash{'passwords'}{$rule} eq '') {
                                if ($rule eq 'min') {
                                    $resulttext .= '<li>'.&mt('[_1] not set.',$titles{$rule});
                                                   ' '.&mt('Default of [_1] will be used',
                                                           $Apache::lonnet::passwdmin).'</li>';
                                } else {
                                    $resulttext .= '<li>'.&mt('[_1] set to none',$titles{$rule}).'</li>';
                                }
                            } else {
                                $resulttext .= '<li>'.&mt('[_1] set to [_2]',$titles{$rule},$confighash{'passwords'}{$rule}).'</li>';
                            }
                        }
                        if (ref($confighash{'passwords'}{'chars'}) eq 'ARRAY') {
                            if (@{$confighash{'passwords'}{'chars'}} > 0) {
                                my %rulenames = &Apache::lonlocal::texthash(
                                                     uc => 'At least one upper case letter',
                                                     lc => 'At least one lower case letter',
                                                     num => 'At least one number',
                                                     spec => 'At least one non-alphanumeric',
                                                   );
                                my $needed = '<ul><li>'.
                                             join('</li><li>',map {$rulenames{$_} } @{$confighash{'passwords'}{'chars'}}).
                                             '</li></ul>'; 
                                $resulttext .= '<li>'.&mt('[_1] set to: [_2]',$titles{'chars'},$needed).'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('[_1] set to none',$titles{'chars'}).'</li>';
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('[_1] set to none',$titles{'chars'}).'</li>';
                        }
                    } elsif ($key eq 'crsownerchg') {
                        if (ref($confighash{'passwords'}{'crsownerchg'}) eq 'HASH') {
                            if ((@{$confighash{'passwords'}{'crsownerchg'}{'by'}} == 0) ||
                                (@{$confighash{'passwords'}{'crsownerchg'}{'for'}} == 0)) {
                                $resulttext .= '<li>'.&mt('Course owner may not change student passwords.').'</li>';
                            } else {
                                my %crsownerstr;
                                foreach my $item ('by','for') {
                                    if (ref($confighash{'passwords'}{'crsownerchg'}{$item}) eq 'ARRAY') {
                                        foreach my $type (@{$confighash{'passwords'}{'crsownerchg'}{$item}}) {
                                            if ($type eq 'default') {
                                                $crsownerstr{$item} .= $othertitle.', ';
                                            } elsif ($usertypes->{$type} ne '') {
                                                $crsownerstr{$item} .= $usertypes->{$type}.', ';
                                            }
                                        }
                                        $crsownerstr{$item} =~ s/\Q, \E$//;
                                    }
                                }
                                $resulttext .= '<li>'.&mt('Course owner (with status: [_1]) may change passwords for students (with status: [_2]).',
                                           $crsownerstr{'by'},$crsownerstr{'for'}).'</li>';
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('Course owner may not change student passwords.').'</li>';
                        }
                    }
                    $resulttext .= '</ul></li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to password settings');
        }
        my $cachetime = 24*60*60;
        if ($updatedefaults) {
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
        }
        if ($updateconf) {
            &Apache::lonnet::do_cache_new('passwdconf',$dom,$confighash{'passwords'},$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'passwdconf'} = 1;
            }
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if ($errors) {
        $resulttext .= '<p>'.&mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul></p>';
    }
    return $resulttext;
}

sub modify_usercreation {
    my ($dom,%domconfig) = @_;
    my ($resulttext,%curr_usercreation,%changes,%authallowed,%cancreate,%save_usercreate);
    my $warningmsg;
    if (ref($domconfig{'usercreation'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'usercreation'}})) {
            if ($key eq 'cancreate') {
                if (ref($domconfig{'usercreation'}{$key}) eq 'HASH') {
                    foreach my $item (keys(%{$domconfig{'usercreation'}{$key}})) {
                        if (($item eq 'requestcrs') || ($item eq 'course') || ($item eq 'author')) {
                            $curr_usercreation{$key}{$item} = $domconfig{'usercreation'}{$key}{$item};
                        } else {
                            $save_usercreate{$key}{$item} = $domconfig{'usercreation'}{$key}{$item};
                        }
                    }
                }
            } elsif ($key eq 'email_rule') {
                $save_usercreate{$key} = $domconfig{'usercreation'}{$key};
            } else {
                $curr_usercreation{$key} = $domconfig{'usercreation'}{$key};
            }
        }
    }
    my @username_rule = &Apache::loncommon::get_env_multiple('form.username_rule');
    my @id_rule = &Apache::loncommon::get_env_multiple('form.id_rule');
    my @contexts = ('author','course','requestcrs');
    foreach my $item(@contexts) {
        $cancreate{$item} = $env{'form.can_createuser_'.$item};
    }
    if (ref($curr_usercreation{'cancreate'}) eq 'HASH') {
        foreach my $item (@contexts) {
            if ($curr_usercreation{'cancreate'}{$item} ne $cancreate{$item}) {
                push(@{$changes{'cancreate'}},$item);
            }
        }
    } elsif (ref($curr_usercreation{'cancreate'}) eq 'ARRAY') {
        foreach my $item (@contexts) {
            if (!grep(/^\Q$item\E$/,@{$curr_usercreation{'cancreate'}})) {
                if ($cancreate{$item} ne 'any') {
                    push(@{$changes{'cancreate'}},$item);
                }
            } else {
                if ($cancreate{$item} ne 'none') {
                    push(@{$changes{'cancreate'}},$item);
                }
            }
        }
    } else {
        foreach my $item (@contexts)  {
            push(@{$changes{'cancreate'}},$item);
        }
    }

    if (ref($curr_usercreation{'username_rule'}) eq 'ARRAY') {
        foreach my $type (@{$curr_usercreation{'username_rule'}}) {
            if (!grep(/^\Q$type\E$/,@username_rule)) {
                push(@{$changes{'username_rule'}},$type);
            }
        }
        foreach my $type (@username_rule) {
            if (!grep(/^\Q$type\E$/,@{$curr_usercreation{'username_rule'}})) {
                push(@{$changes{'username_rule'}},$type);
            }
        }
    } else {
        push(@{$changes{'username_rule'}},@username_rule);
    }

    if (ref($curr_usercreation{'id_rule'}) eq 'ARRAY') {
        foreach my $type (@{$curr_usercreation{'id_rule'}}) {
            if (!grep(/^\Q$type\E$/,@id_rule)) {
                push(@{$changes{'id_rule'}},$type);
            }
        }
        foreach my $type (@id_rule) {
            if (!grep(/^\Q$type\E$/,@{$curr_usercreation{'id_rule'}})) {
                push(@{$changes{'id_rule'}},$type);
            }
        }
    } else {
        push(@{$changes{'id_rule'}},@id_rule);
    }

    my @authen_contexts = ('author','course','domain');
    my @authtypes = ('int','krb4','krb5','loc','lti');
    my %authhash;
    foreach my $item (@authen_contexts) {
        my @authallowed =  &Apache::loncommon::get_env_multiple('form.'.$item.'_auth');
        foreach my $auth (@authtypes) {
            if (grep(/^\Q$auth\E$/,@authallowed)) {
                $authhash{$item}{$auth} = 1;
            } else {
                $authhash{$item}{$auth} = 0;
            }
        }
    }
    if (ref($curr_usercreation{'authtypes'}) eq 'HASH') {
        foreach my $item (@authen_contexts) {
            if (ref($curr_usercreation{'authtypes'}{$item}) eq 'HASH') {
                foreach my $auth (@authtypes) {
                    if ($authhash{$item}{$auth} ne $curr_usercreation{'authtypes'}{$item}{$auth}) {
                        push(@{$changes{'authtypes'}},$item);
                        last;
                    }
                }
            }
        }
    } else {
        foreach my $item (@authen_contexts) {
            push(@{$changes{'authtypes'}},$item);
        }
    }

    $save_usercreate{'cancreate'}{'course'} = $cancreate{'course'}; 
    $save_usercreate{'cancreate'}{'author'} = $cancreate{'author'};
    $save_usercreate{'cancreate'}{'requestcrs'} = $cancreate{'requestcrs'};
    $save_usercreate{'id_rule'} = \@id_rule;
    $save_usercreate{'username_rule'} = \@username_rule,
    $save_usercreate{'authtypes'} = \%authhash;

    my %usercreation_hash =  (
        usercreation     => \%save_usercreate,
    );

    my $putresult = &Apache::lonnet::put_dom('configuration',\%usercreation_hash,
                                             $dom);

    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            if (ref($changes{'cancreate'}) eq 'ARRAY') {
                my %lt = &usercreation_types();
                foreach my $type (@{$changes{'cancreate'}}) {
                    my $chgtext = $lt{$type}.', ';
                    if ($cancreate{$type} eq 'none') {
                        $chgtext .= &mt('creation of new users is not permitted, except by a Domain Coordinator.');
                    } elsif ($cancreate{$type} eq 'any') {
                        $chgtext .= &mt('creation of new users is permitted for both institutional and non-institutional usernames.');
                    } elsif ($cancreate{$type} eq 'official') {
                        $chgtext .= &mt('creation of new users is only permitted for institutional usernames.');
                    } elsif ($cancreate{$type} eq 'unofficial') {
                        $chgtext .= &mt('creation of new users is only permitted for non-institutional usernames.');
                    }
                    $resulttext .= '<li>'.$chgtext.'</li>';
                }
            }
            if (ref($changes{'username_rule'}) eq 'ARRAY') {
                my ($rules,$ruleorder) = 
                    &Apache::lonnet::inst_userrules($dom,'username');
                my $chgtext = '<ul>';
                foreach my $type (@username_rule) {
                    if (ref($rules->{$type}) eq 'HASH') {
                        $chgtext .= '<li>'.$rules->{$type}{'name'}.'</li>';
                    }
                }
                $chgtext .= '</ul>';
                if (@username_rule > 0) {
                    $resulttext .= '<li>'.&mt('Usernames with the following formats are restricted to verified users in the institutional directory: ').$chgtext.'</li>';     
                } else {
                    $resulttext .= '<li>'.&mt('There are now no username formats restricted to verified users in the institutional directory.').'</li>'; 
                }
            }
            if (ref($changes{'id_rule'}) eq 'ARRAY') {
                my ($idrules,$idruleorder) = 
                    &Apache::lonnet::inst_userrules($dom,'id');
                my $chgtext = '<ul>';
                foreach my $type (@id_rule) {
                    if (ref($idrules->{$type}) eq 'HASH') {
                        $chgtext .= '<li>'.$idrules->{$type}{'name'}.'</li>';
                    }
                }
                $chgtext .= '</ul>';
                if (@id_rule > 0) {
                    $resulttext .= '<li>'.&mt('IDs with the following formats are restricted to verified users in the institutional directory: ').$chgtext.'</li>';
                } else {
                    $resulttext .= '<li>'.&mt('There are now no ID formats restricted to verified users in the institutional directory.').'</li>';
                }
            }
            my %authname = &authtype_names();
            my %context_title = &context_names();
            if (ref($changes{'authtypes'}) eq 'ARRAY') {
                my $chgtext = '<ul>';
                foreach my $type (@{$changes{'authtypes'}}) {
                    my @allowed;
                    $chgtext .= '<li><span class="LC_cusr_emph">'.$context_title{$type}.'</span> - '.&mt('assignable authentication types: ');
                    foreach my $auth (@authtypes) {
                        if ($authhash{$type}{$auth}) {
                            push(@allowed,$authname{$auth});
                        }
                    }
                    if (@allowed > 0) {
                        $chgtext .= join(', ',@allowed).'</li>';
                    } else {
                        $chgtext .= &mt('none').'</li>';
                    }
                }
                $chgtext .= '</ul>';
                $resulttext .= '<li>'.&mt('Authentication types available for assignment to new users').'<br />'.$chgtext;
                $resulttext .= '</li>';
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to user creation settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if ($warningmsg ne '') {
        $resulttext .= '<br /><span class="LC_warning">'.$warningmsg.'</span><br />';
    }
    return $resulttext;
}

sub modify_selfcreation {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,$warningmsg,%curr_usercreation,%curr_usermodify,%curr_inststatus,%changes,%cancreate);
    my (%save_usercreate,%save_usermodify,%save_inststatus,@types,%usertypes);
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my ($othertitle,$usertypesref,$typesref) = &Apache::loncommon::sorted_inst_types($dom);
    if (ref($typesref) eq 'ARRAY') {
        @types = @{$typesref};
    }
    if (ref($usertypesref) eq 'HASH') {
        %usertypes = %{$usertypesref};
    }
    $usertypes{'default'} = $othertitle;
#
# Retrieve current domain configuration for self-creation of usernames from $domconfig{'usercreation'}.
#
    if (ref($domconfig{'usercreation'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'usercreation'}})) {
            if ($key eq 'cancreate') {
                if (ref($domconfig{'usercreation'}{$key}) eq 'HASH') {
                    foreach my $item (keys(%{$domconfig{'usercreation'}{$key}})) {
                        if (($item eq 'selfcreate') || ($item eq 'statustocreate') ||
                            ($item eq 'captcha') || ($item eq 'recaptchakeys') ||
                            ($item eq 'recaptchaversion') || ($item eq 'notify') ||
                            ($item eq 'emailusername') || ($item eq 'shibenv') ||
                            ($item eq 'selfcreateprocessing') || ($item eq 'emailverified') ||
                            ($item eq 'emailoptions') || ($item eq 'emaildomain')) {
                            $curr_usercreation{$key}{$item} = $domconfig{'usercreation'}{$key}{$item};
                        } else {
                            $save_usercreate{$key}{$item} = $domconfig{'usercreation'}{$key}{$item};
                        }
                    }
                }
            } elsif ($key eq 'email_rule') {
                $curr_usercreation{$key} = $domconfig{'usercreation'}{$key};
            } else {
                $save_usercreate{$key} = $domconfig{'usercreation'}{$key};
            }
        }
    }
#
# Retrieve current domain configuration for self-creation of usernames from $domconfig{'usermodification'}.
#
    if (ref($domconfig{'usermodification'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'usermodification'}})) {
            if ($key eq 'selfcreate') {
                $curr_usermodify{$key} = $domconfig{'usermodification'}{$key};
            } else {
                $save_usermodify{$key} = $domconfig{'usermodification'}{$key};
            }
        }
    }
#
# Retrieve current domain configuration for institutional status types from $domconfig{'inststatus'}.
#
    if (ref($domconfig{'inststatus'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'inststatus'}})) {
            if ($key eq 'inststatusguest') {
                $curr_inststatus{$key} = $domconfig{'inststatus'}{$key};
            } else {
                $save_inststatus{$key} = $domconfig{'inststatus'}{$key};
            }
        }
    }

    my @contexts = ('selfcreate');
    @{$cancreate{'selfcreate'}} = ();
    %{$cancreate{'emailusername'}} = ();
    if (@types) {
        @{$cancreate{'statustocreate'}} = ();
    }
    %{$cancreate{'selfcreateprocessing'}} = ();
    %{$cancreate{'shibenv'}} = ();
    %{$cancreate{'emailverified'}} = ();
    %{$cancreate{'emailoptions'}} = ();
    %{$cancreate{'emaildomain'}} = ();
    my %selfcreatetypes = (
                             sso   => 'users authenticated by institutional single sign on',
                             login => 'users authenticated by institutional log-in',
                             email => 'users verified by e-mail',
                          );
#
# Populate $cancreate{'selfcreate'} array reference with types of user, for which self-creation of user accounts
# is permitted.
#
    my ($emailrules,$emailruleorder) = &Apache::lonnet::inst_userrules($dom,'email');

    my (@statuses,%email_rule);
    foreach my $item ('login','sso','email') {
        if ($item eq 'email') {
            if ($env{'form.cancreate_email'}) {
                if (@types) {
                    my @poss_statuses = &Apache::loncommon::get_env_multiple('form.selfassign');
                    foreach my $status (@poss_statuses) {
                        if (grep(/^\Q$status\E$/,(@types,'default'))) {
                            push(@statuses,$status);
                        }
                    }
                    $save_inststatus{'inststatusguest'} = \@statuses;
                } else {
                    push(@statuses,'default');
                }
                if (@statuses) {
                    my %curr_rule;
                    if (ref($curr_usercreation{'email_rule'}) eq 'ARRAY') {
                        foreach my $type (@statuses) {
                            $curr_rule{$type} = $curr_usercreation{'email_rule'};
                        }
                    } elsif (ref($curr_usercreation{'email_rule'}) eq 'HASH') {
                        foreach my $type (@statuses) {
                            $curr_rule{$type} = $curr_usercreation{'email_rule'}{$type};
                        }
                    }
                    push(@{$cancreate{'selfcreate'}},'email');
                    push(@contexts,('selfcreateprocessing','emailverified','emailoptions'));
                    my %curremaildom;
                    if (ref($curr_usercreation{'cancreate'}{'emaildomain'}) eq 'HASH') {
                        %curremaildom = %{$curr_usercreation{'cancreate'}{'emaildomain'}};
                    }
                    foreach my $type (@statuses) {
                        if ($env{'form.cancreate_emailprocess_'.$type} =~ /^(?:approval|automatic)$/) {
                            $cancreate{'selfcreateprocessing'}{$type} = $env{'form.cancreate_emailprocess_'.$type};
                        }
                        if ($env{'form.cancreate_usernameoptions_'.$type} =~ /^(?:all|first|free)$/) {
                            $cancreate{'emailverified'}{$type} = $env{'form.cancreate_usernameoptions_'.$type};
                        }
                        if ($env{'form.cancreate_emailoptions_'.$type} =~ /^(any|inst|noninst|custom)$/) {
#
# Retrieve rules (if any) governing types of e-mail address which may be used to verify a username.
#
                            my $chosen = $1;
                            if (($chosen eq 'inst') || ($chosen eq 'noninst')) {
                                my $emaildom;
                                if ($env{'form.cancreate_emaildomain_'.$chosen.'_'.$type} =~ /^\@[^\@]+$/) {
                                    $emaildom = $env{'form.cancreate_emaildomain_'.$chosen.'_'.$type}; 
                                    $cancreate{'emaildomain'}{$type}{$chosen} = $emaildom;
                                    if (ref($curremaildom{$type}) eq 'HASH') {
                                        if (exists($curremaildom{$type}{$chosen})) {
                                            if ($curremaildom{$type}{$chosen} ne $emaildom) {
                                                push(@{$changes{'cancreate'}},'emaildomain');
                                            }
                                        } elsif ($emaildom ne '') {
                                            push(@{$changes{'cancreate'}},'emaildomain');
                                        }
                                    } elsif ($emaildom ne '') {
                                        push(@{$changes{'cancreate'}},'emaildomain');
                                    } 
                                }
                                $cancreate{'emailoptions'}{$type} = $env{'form.cancreate_emailoptions_'.$type};
                            } elsif ($chosen eq 'custom') {
                                my @possemail_rules = &Apache::loncommon::get_env_multiple('form.email_rule_'.$type);
                                $email_rule{$type} = [];
                                if (ref($emailrules) eq 'HASH') {
                                    foreach my $rule (@possemail_rules) {
                                        if (exists($emailrules->{$rule})) {
                                            push(@{$email_rule{$type}},$rule);
                                        }
                                    }
                                }
                                if (@{$email_rule{$type}}) {
                                    $cancreate{'emailoptions'}{$type} = 'custom';
                                    if (ref($curr_rule{$type}) eq 'ARRAY') {
                                        if (@{$curr_rule{$type}} > 0) {
                                            foreach my $rule (@{$curr_rule{$type}}) {
                                                if (!grep(/^\Q$rule\E$/,@{$email_rule{$type}})) {
                                                    push(@{$changes{'email_rule'}},$type);
                                                }
                                            }
                                        }
                                        foreach my $type (@{$email_rule{$type}}) {
                                            if (!grep(/^\Q$type\E$/,@{$curr_rule{$type}})) {
                                                push(@{$changes{'email_rule'}},$type);
                                            }
                                        }
                                    } else {
                                        push(@{$changes{'email_rule'}},$type);
                                    }
                                }
                            } else {
                                $cancreate{'emailoptions'}{$type} = $env{'form.cancreate_emailoptions_'.$type};
                            }
                        }
                    }
                    if (@types) {
                        if (ref($curr_inststatus{'inststatusguest'}) eq 'ARRAY') {
                            my @changed = &Apache::loncommon::compare_arrays(\@statuses,$curr_inststatus{'inststatusguest'});
                            if (@changed) {
                                push(@{$changes{'inststatus'}},'inststatusguest');
                            }
                        } else {
                            push(@{$changes{'inststatus'}},'inststatusguest');
                        }
                    }
                } else {
                    delete($env{'form.cancreate_email'});
                    if (ref($curr_inststatus{'inststatusguest'}) eq 'ARRAY') {
                        if (@{$curr_inststatus{'inststatusguest'}} > 0) {
                            push(@{$changes{'inststatus'}},'inststatusguest');
                        }
                    }
                }
            } else {
                $save_inststatus{'inststatusguest'} = [];
                if (ref($curr_inststatus{'inststatusguest'}) eq 'ARRAY') {
                    if (@{$curr_inststatus{'inststatusguest'}} > 0) {
                        push(@{$changes{'inststatus'}},'inststatusguest');
                    }
                }
            }
        } else {
            if ($env{'form.cancreate_'.$item}) {
                push(@{$cancreate{'selfcreate'}},$item);
            }
        }
    }
    my (%userinfo,%savecaptcha);
    my ($infofields,$infotitles) = &Apache::loncommon::emailusername_info();
#
# Populate $cancreate{'emailusername'}{$type} hash ref with information fields (if new user will provide data
# value set to one), if self-creation with e-mail address permitted, where $type is user type: faculty, staff, student etc.
#

    if ($env{'form.cancreate_email'}) {
        push(@contexts,'emailusername');
        if (@statuses) {
            foreach my $type (@statuses) {
                if (ref($infofields) eq 'ARRAY') {
                    foreach my $field (@{$infofields}) {
                        if ($env{'form.canmodify_emailusername_'.$type.'_'.$field} =~ /^(required|optional)$/) {
                            $cancreate{'emailusername'}{$type}{$field} = $1;
                        }
                    }
                }
            }
        }
#
# Populate $cancreate{'notify'} hash ref with names of Domain Coordinators who are to be notified of
# queued requests for self-creation of account verified by e-mail.
#

        my @approvalnotify = &Apache::loncommon::get_env_multiple('form.selfcreationnotifyapproval');
        @approvalnotify = sort(@approvalnotify);
        $cancreate{'notify'}{'approval'} = join(',',@approvalnotify);
        if (ref($curr_usercreation{'cancreate'}) eq 'HASH') {
            if (ref($curr_usercreation{'cancreate'}{'notify'}) eq 'HASH') {
                if ($curr_usercreation{'cancreate'}{'notify'}{'approval'} ne $cancreate{'notify'}{'approval'}) {
                    push(@{$changes{'cancreate'}},'notify');
                }
            } else {
                if ($cancreate{'notify'}{'approval'}) {
                    push(@{$changes{'cancreate'}},'notify');
                }
            }
        } elsif ($cancreate{'notify'}{'approval'}) {
            push(@{$changes{'cancreate'}},'notify');
        }

        &process_captcha('cancreate',\%changes,\%savecaptcha,$curr_usercreation{'cancreate'});
    }
#  
# Check if domain default is set appropriately, if self-creation of accounts is to be available for
# institutional log-in.
#
    if (grep(/^login$/,@{$cancreate{'selfcreate'}})) {
        if (!((($domdefaults{'auth_def'} =~/^krb/) && ($domdefaults{'auth_arg_def'} ne '')) || 
               ($domdefaults{'auth_def'} eq 'localauth'))) {
            $warningmsg = &mt('Although account creation has been set to be available for institutional logins, currently default authentication in this domain has not been set to support this.').' '.
                          &mt('You need to set the default authentication type to Kerberos 4 or 5 (with a Kerberos domain specified), or to Local authentication, if the localauth module has been customized in your domain to authenticate institutional logins.');
        }
    }
    my @fields = ('lastname','firstname','middlename','generation',
                  'permanentemail','id');
    my @shibfields = (@fields,'inststatus');
    my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
#
# Where usernames may created for institutional log-in and/or institutional single sign on:
# (a) populate $cancreate{'statustocreate'} array reference with institutional status types who
# may self-create accounts 
# (b) populate $save_usermodify{'selfcreate'} hash reference with status types, and information fields
# which the user may supply, if institutional data is unavailable.
#
    if (($env{'form.cancreate_login'}) || ($env{'form.cancreate_sso'})) {
        if (@types) {
            @{$cancreate{'statustocreate'}} = &Apache::loncommon::get_env_multiple('form.statustocreate');
            push(@contexts,'statustocreate');
            foreach my $type (@types) {
                my @modifiable =  &Apache::loncommon::get_env_multiple('form.canmodify_'.$type);
                foreach my $field (@fields) {
                    if (grep(/^\Q$field\E$/,@modifiable)) {
                        $save_usermodify{'selfcreate'}{$type}{$field} = 1;
                    } else {
                        $save_usermodify{'selfcreate'}{$type}{$field} = 0;
                    }
                }
            }
            if (ref($curr_usermodify{'selfcreate'}) eq 'HASH') {
                foreach my $type (@types) {
                    if (ref($curr_usermodify{'selfcreate'}{$type}) eq 'HASH') {
                        foreach my $field (@fields) {
                            if ($save_usermodify{'selfcreate'}{$type}{$field} ne
                                $curr_usermodify{'selfcreate'}{$type}{$field}) {
                                push(@{$changes{'selfcreate'}},$type);
                                last;
                            }
                        }
                    }
                }
            } else {
                foreach my $type (@types) {
                    push(@{$changes{'selfcreate'}},$type);
                }
            }
        }
        foreach my $field (@shibfields) {
            if ($env{'form.shibenv_'.$field} ne '') {
                $cancreate{'shibenv'}{$field} = $env{'form.shibenv_'.$field};
            }
        }
        if (ref($curr_usercreation{'cancreate'}) eq 'HASH') {
            if (ref($curr_usercreation{'cancreate'}{'shibenv'}) eq 'HASH') {
                foreach my $field (@shibfields) {
                    if ($env{'form.shibenv_'.$field} ne $curr_usercreation{'cancreate'}{'shibenv'}{$field}) {
                        push(@{$changes{'cancreate'}},'shibenv');
                    }
                }
            } else {
                foreach my $field (@shibfields) {
                    if ($env{'form.shibenv_'.$field}) {
                        push(@{$changes{'cancreate'}},'shibenv');
                        last;
                    }
                }
            }
        }
    }
    foreach my $item (@contexts) {
        if (ref($curr_usercreation{'cancreate'}{$item}) eq 'ARRAY') {
            foreach my $curr (@{$curr_usercreation{'cancreate'}{$item}}) {
                if (ref($cancreate{$item}) eq 'ARRAY') {
                    if (!grep(/^$curr$/,@{$cancreate{$item}})) {
                        if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                            push(@{$changes{'cancreate'}},$item);
                        }
                    }
                }
            }
            if (ref($cancreate{$item}) eq 'ARRAY') {
                foreach my $type (@{$cancreate{$item}}) {
                    if (!grep(/^$type$/,@{$curr_usercreation{'cancreate'}{$item}})) {
                        if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                            push(@{$changes{'cancreate'}},$item);
                        }
                    }
                }
            }
        } elsif (ref($curr_usercreation{'cancreate'}{$item}) eq 'HASH') {
            if (ref($cancreate{$item}) eq 'HASH') {
                foreach my $type (keys(%{$curr_usercreation{'cancreate'}{$item}})) {
                    if (ref($curr_usercreation{'cancreate'}{$item}{$type}) eq 'HASH') {
                        foreach my $field (keys(%{$curr_usercreation{'cancreate'}{$item}{$type}})) {
                            unless ($curr_usercreation{'cancreate'}{$item}{$type}{$field} eq $cancreate{$item}{$type}{$field}) {
                                if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                                    push(@{$changes{'cancreate'}},$item);
                                }
                            }
                        }
                    } elsif (($item eq 'selfcreateprocessing') || ($item eq 'emailverified') || ($item eq 'emailoptions')) {
                        if ($cancreate{$item}{$type} ne $curr_usercreation{'cancreate'}{$item}{$type}) {
                            if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                                push(@{$changes{'cancreate'}},$item);
                            }
                        }
                    }
                }
                foreach my $type (keys(%{$cancreate{$item}})) {
                    if (ref($cancreate{$item}{$type}) eq 'HASH') {
                        foreach my $field (keys(%{$cancreate{$item}{$type}})) {
                            if (ref($curr_usercreation{'cancreate'}{$item}{$type}) eq 'HASH') {
                                unless ($curr_usercreation{'cancreate'}{$item}{$type}{$field} eq $cancreate{$item}{$type}{$field}) {
                                    if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                                        push(@{$changes{'cancreate'}},$item);
                                    }
                                }
                            } else {
                                if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                                    push(@{$changes{'cancreate'}},$item);
                                }
                            }
                        }
                    } elsif (($item eq 'selfcreateprocessing') || ($item eq 'emailverified') || ($item eq 'emailoptions')) {
                        if ($cancreate{$item}{$type} ne $curr_usercreation{'cancreate'}{$item}{$type}) {
                            if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                                push(@{$changes{'cancreate'}},$item);
                            }
                        }
                    }
                }
            }
        } elsif ($curr_usercreation{'cancreate'}{$item}) {
            if (ref($cancreate{$item}) eq 'ARRAY') {
                if (!grep(/^\Q$curr_usercreation{'cancreate'}{$item}\E$/,@{$cancreate{$item}})) {
                    if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                        push(@{$changes{'cancreate'}},$item);
                    }
                }
            }
        } elsif (($item eq 'selfcreateprocessing') || ($item eq 'emailverified') || ($item eq 'emailoptions')) {
            if (ref($cancreate{$item}) eq 'HASH') {
                if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                    push(@{$changes{'cancreate'}},$item);
                }
            }
        } elsif ($item eq 'emailusername') {
            if (ref($cancreate{$item}) eq 'HASH') {
                foreach my $type (keys(%{$cancreate{$item}})) {
                    if (ref($cancreate{$item}{$type}) eq 'HASH') {
                        foreach my $field (keys(%{$cancreate{$item}{$type}})) {
                            if ($cancreate{$item}{$type}{$field}) {
                                if (!grep(/^$item$/,@{$changes{'cancreate'}})) {
                                    push(@{$changes{'cancreate'}},$item);
                                }
                                last;
                            }
                        }
                    }
                }
            }
        }
    }
#
# Populate %save_usercreate hash with updates to self-creation configuration.
#
    $save_usercreate{'cancreate'}{'captcha'} = $savecaptcha{'captcha'};
    $save_usercreate{'cancreate'}{'recaptchakeys'} = $savecaptcha{'recaptchakeys'};
    $save_usercreate{'cancreate'}{'recaptchaversion'} = $savecaptcha{'recaptchaversion'};
    $save_usercreate{'cancreate'}{'selfcreate'} = $cancreate{'selfcreate'};
    if (ref($cancreate{'notify'}) eq 'HASH') {
        $save_usercreate{'cancreate'}{'notify'} = $cancreate{'notify'};
    }
    if (ref($cancreate{'selfcreateprocessing'}) eq 'HASH') {
        $save_usercreate{'cancreate'}{'selfcreateprocessing'} = $cancreate{'selfcreateprocessing'};
    }
    if (ref($cancreate{'emailverified'}) eq 'HASH') {
        $save_usercreate{'cancreate'}{'emailverified'} = $cancreate{'emailverified'};
    }
    if (ref($cancreate{'emailoptions'}) eq 'HASH') {
        $save_usercreate{'cancreate'}{'emailoptions'} = $cancreate{'emailoptions'};
    }
    if (ref($cancreate{'emaildomain'}) eq 'HASH') {
        $save_usercreate{'cancreate'}{'emaildomain'} = $cancreate{'emaildomain'};
    }
    if (ref($cancreate{'statustocreate'}) eq 'ARRAY') {
        $save_usercreate{'cancreate'}{'statustocreate'} = $cancreate{'statustocreate'};
    }
    if (ref($cancreate{'shibenv'}) eq 'HASH') {
        $save_usercreate{'cancreate'}{'shibenv'} = $cancreate{'shibenv'};
    }
    $save_usercreate{'cancreate'}{'emailusername'} = $cancreate{'emailusername'};
    $save_usercreate{'email_rule'} = \%email_rule;

    my %userconfig_hash = (
            usercreation     => \%save_usercreate,
            usermodification => \%save_usermodify,
            inststatus       => \%save_inststatus,
    );

    my $putresult = &Apache::lonnet::put_dom('configuration',\%userconfig_hash,
                                             $dom);
#
# Accumulate details of changes to domain configuration for self-creation of usernames in $resulttext
#
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            if (ref($changes{'cancreate'}) eq 'ARRAY') {
                my %lt = &selfcreation_types();
                foreach my $type (@{$changes{'cancreate'}}) {
                    my $chgtext = '';
                    if ($type eq 'selfcreate') {
                        if (@{$cancreate{$type}} == 0) {
                            $chgtext .= &mt('Self creation of a new user account is not permitted.');
                        } else {
                            $chgtext .= &mt('Self-creation of a new account is permitted for:').
                                        '<ul>';
                            foreach my $case (@{$cancreate{$type}}) {
                                $chgtext .= '<li>'.$selfcreatetypes{$case}.'</li>';
                            }
                            $chgtext .= '</ul>';
                            if (ref($cancreate{$type}) eq 'ARRAY') {
                                if (grep(/^(login|sso)$/,@{$cancreate{$type}})) {
                                    if (ref($cancreate{'statustocreate'}) eq 'ARRAY') {
                                        if (@{$cancreate{'statustocreate'}} == 0) {
                                            $chgtext .= '<span class="LC_warning">'.
                                                        &mt("However, no institutional affiliations (including 'other') are currently permitted to create accounts via log-in or single sign-on.").
                                                        '</span><br />';
                                        }
                                    }
                                }
                                if (grep(/^email$/,@{$cancreate{$type}})) {
                                    if (!@statuses) {
                                        $chgtext .= '<span class="LC_warning">'.
                                                    &mt("However, e-mail verification is currently set to 'unavailable' for all user types (including 'other'), so self-creation of accounts is not possible for non-institutional log-in.").
                                                    '</span><br />';

                                    }
                                }
                            }
                        }
                    } elsif ($type eq 'shibenv') {
                        if (keys(%{$cancreate{$type}}) == 0) {
                            $chgtext .= &mt('Shibboleth-autheticated user does not use environment variables to set user information').'<br />'; 
                        } else {
                            $chgtext .= &mt('Shibboleth-autheticated user information set from environment variables, as follows:').
                                        '<ul>';
                            foreach my $field (@shibfields) {
                                next if ($cancreate{$type}{$field} eq '');
                                if ($field eq 'inststatus') {
                                    $chgtext .= '<li>'.&mt('Institutional status').' -- '.$cancreate{$type}{$field}.'</li>';
                                } else {
                                    $chgtext .= '<li>'.$fieldtitles{$field}.' -- '.$cancreate{$type}{$field}.'</li>';
                                }
                            }
                            $chgtext .= '</ul>';
                        }
                    } elsif ($type eq 'statustocreate') {
                        if ((ref($cancreate{'selfcreate'}) eq 'ARRAY') &&
                            (ref($cancreate{'statustocreate'}) eq 'ARRAY')) {
                            if (@{$cancreate{'selfcreate'}} > 0) {
                                if (@{$cancreate{'statustocreate'}} == 0) {
                                    $chgtext .= &mt("Institutional affiliations permitted to create accounts set to 'None'.");
                                    if (!grep(/^email$/,@{$cancreate{'selfcreate'}})) {
                                        $chgtext .= '<br />'.
                                                    '<span class="LC_warning">'.
                                                    &mt("However, no institutional affiliations (including 'other') are currently permitted to create accounts.").
                                                    '</span>';
                                    }
                                } elsif (keys(%usertypes) > 0) {
                                    if (grep(/^(login|sso)$/,@{$cancreate{'selfcreate'}})) {
                                        $chgtext .= &mt('Creation of a new account for an institutional user is restricted to the following institutional affiliation(s):');
                                    } else {
                                        $chgtext .= &mt('Institutional affiliations permitted to create accounts with institutional authentication were set as follows:');
                                    }
                                    $chgtext .= '<ul>';
                                    foreach my $case (@{$cancreate{$type}}) {
                                        if ($case eq 'default') {
                                            $chgtext .= '<li>'.$othertitle.'</li>';
                                        } else {
                                            $chgtext .= '<li>'.$usertypes{$case}.'</li>';
                                        }
                                    }
                                    $chgtext .= '</ul>';
                                    if (!grep(/^(login|sso)$/,@{$cancreate{'selfcreate'}})) {
                                        $chgtext .= '<span class="LC_warning">'.
                                                    &mt('However, users authenticated by institutional login/single sign on are not currently permitted to create accounts.').
                                                    '</span>';
                                    }
                                }
                            } else {
                                if (@{$cancreate{$type}} == 0) {
                                    $chgtext .= &mt("Institutional affiliations permitted to create accounts were set to 'none'.");
                                } else {
                                    $chgtext .= &mt('Although institutional affiliations permitted to create accounts were changed, self creation of accounts is not currently permitted for any authentication types.');
                                }
                            }
                            $chgtext .= '<br />';
                        }
                    } elsif ($type eq 'selfcreateprocessing') {
                        my %choices = &Apache::lonlocal::texthash (
                                                                    automatic => 'Automatic approval',
                                                                    approval  => 'Queued for approval',
                                                                  );
                        if (@types) {
                            if (@statuses) {
                                $chgtext .= &mt('Processing of requests to create account with e-mail verification set as follows:'). 
                                            '<ul>';
                                foreach my $status (@statuses) {
                                    if ($status eq 'default') {
                                        $chgtext .= '<li>'.$othertitle.' -- '.$choices{$cancreate{'selfcreateprocessing'}{$status}}.'</li>';
                                    } else {
                                        $chgtext .= '<li>'.$usertypes{$status}.' -- '.$choices{$cancreate{'selfcreateprocessing'}{$status}}.'</li>';
                                    }
                                }
                                $chgtext .= '</ul>';
                            }
                        } else {
                            $chgtext .= &mt('Processing of requests to create account with e-mail verification set to: "[_1]"',
                                            $choices{$cancreate{'selfcreateprocessing'}{'default'}});
                        }
                    } elsif ($type eq 'emailverified') {
                        my %options = &Apache::lonlocal::texthash (
                                                                    all   => 'Same as e-mail',
                                                                    first => 'Omit @domain',
                                                                    free  => 'Free to choose',
                                                                  );
                        if (@types) {
                            if (@statuses) {
                                $chgtext .= &mt('For self-created accounts verified by e-mail address, username is set as follows:').
                                            '<ul>';
                                foreach my $status (@statuses) {
                                    if ($status eq 'default') {
                                        $chgtext .= '<li>'.$othertitle.' -- '.$options{$cancreate{'emailverified'}{$status}}.'</li>';
                                    } else {
                                        $chgtext .= '<li>'.$usertypes{$status}.' -- '.$options{$cancreate{'emailverified'}{$status}}.'</li>';
                                    }
                                }
                                $chgtext .= '</ul>';
                            }
                        } else {
                            $chgtext .= &mt("For self-created accounts verified by e-mail address, user's username is: '[_1]'",
                                            $options{$cancreate{'emailverified'}{'default'}});
                        }
                    } elsif ($type eq 'emailoptions') {
                        my %options = &Apache::lonlocal::texthash (
                                                                    any     => 'Any e-mail',
                                                                    inst    => 'Institutional only',
                                                                    noninst => 'Non-institutional only',
                                                                    custom  => 'Custom restrictions',
                                                                  );
                        if (@types) {
                            if (@statuses) {
                                $chgtext .= &mt('For self-created accounts verified by e-mail address, requirements for e-mail address are as follows:').
                                            '<ul>';
                                foreach my $status (@statuses) {
                                    if ($type eq 'default') {
                                        $chgtext .= '<li>'.$othertitle.' -- '.$options{$cancreate{'emailoptions'}{$status}}.'</li>';
                                    } else {
                                        $chgtext .= '<li>'.$usertypes{$status}.' -- '.$options{$cancreate{'emailoptions'}{$status}}.'</li>';
                                    }
                                }
                                $chgtext .= '</ul>';
                            }
                        } else {
                            if ($cancreate{'emailoptions'}{'default'} eq 'any') {
                                $chgtext .= &mt('For self-created accounts verified by e-mail address, any e-mail may be used');
                            } else {
                                $chgtext .= &mt('For self-created accounts verified by e-mail address, e-mail restricted to: "[_1]"',
                                                $options{$cancreate{'emailoptions'}{'default'}});
                            }
                        }
                    } elsif ($type eq 'emaildomain') {
                        my $output;
                        if (@statuses) {
                            foreach my $type (@statuses) {
                                if (ref($cancreate{'emaildomain'}{$type}) eq 'HASH') {
                                    if ($cancreate{'emailoptions'}{$type} eq 'inst') {
                                        if ($type eq 'default') {
                                            if ((ref($cancreate{'emaildomain'}{$type}) ne 'HASH') ||
                                                ($cancreate{'emaildomain'}{$type}{'inst'} eq '')) {
                                                $output = '<li>'.$othertitle.' -- '.&mt('No restriction on e-mail domain').'</li>';
                                            } else {
                                                $output = '<li>'.$othertitle.' -- '.&mt("User's e-mail address needs to end: [_1]",
                                                                                        $cancreate{'emaildomain'}{$type}{'inst'}).'</li>';
                                            }
                                        } else {
                                            if ((ref($cancreate{'emaildomain'}{$type}) ne 'HASH') ||
                                                ($cancreate{'emaildomain'}{$type}{'inst'} eq '')) {
                                                $output = '<li>'.$usertypes{$type}.' -- '.&mt('No restriction on e-mail domain').'</li>';
                                            } else {
                                                $output = '<li>'.$usertypes{$type}.' -- '.&mt("User's e-mail address needs to end: [_1]",
                                                                                              $cancreate{'emaildomain'}{$type}{'inst'}).'</li>'; 
                                            }
                                        }
                                    } elsif ($cancreate{'emailoptions'}{$type} eq 'noninst') {
                                        if ($type eq 'default') {
                                            if ((ref($cancreate{'emaildomain'}{$type}) ne 'HASH') ||
                                                ($cancreate{'emaildomain'}{$type}{'noninst'} eq '')) {
                                                $output = '<li>'.$othertitle.' -- '.&mt('No restriction on e-mail domain').'</li>';
                                            } else {
                                                $output = '<li>'.$othertitle.' -- '.&mt("User's e-mail address must not end: [_1]",
                                                                                        $cancreate{'emaildomain'}{$type}{'noninst'}).'</li>';
                                            }
                                        } else {
                                            if ((ref($cancreate{'emaildomain'}{$type}) ne 'HASH') ||
                                                ($cancreate{'emaildomain'}{$type}{'noninst'} eq '')) {
                                                $output = '<li>'.$usertypes{$type}.' -- '.&mt('No restriction on e-mail domain').'</li>';
                                            } else {
                                                $output = '<li>'.$usertypes{$type}.' -- '.&mt("User's e-mail address must not end: [_1]",
                                                                                                $cancreate{'emaildomain'}{$type}{'noninst'}).'</li>';   
                                            }
                                        }
                                    }
                                }
                            }
                        }
                        if ($output ne '') {
                            $chgtext .= &mt('For self-created accounts verified by e-mail address:').
                                        '<ul>'.$output.'</ul>';
                        }
                    } elsif ($type eq 'captcha') {
                        if ($savecaptcha{$type} eq 'notused') {
                            $chgtext .= &mt('No CAPTCHA validation in use for self-creation screen.');
                        } else {
                            my %captchas = &captcha_phrases();
                            if ($captchas{$savecaptcha{$type}}) {
                                $chgtext .= &mt("Validation for self-creation screen set to $captchas{$savecaptcha{$type}}.");
                            } else {
                                $chgtext .= &mt('Validation for self-creation screen set to unknown type.');
                            }
                        }
                    } elsif ($type eq 'recaptchakeys') {
                        my ($privkey,$pubkey);
                        if (ref($savecaptcha{$type}) eq 'HASH') {
                            $pubkey = $savecaptcha{$type}{'public'};
                            $privkey = $savecaptcha{$type}{'private'};
                        }
                        $chgtext .= &mt('ReCAPTCHA keys changes').'<ul>';
                        if (!$pubkey) {
                            $chgtext .= '<li>'.&mt('Public key deleted').'</li>';
                        } else {
                            $chgtext .= '<li>'.&mt('Public key set to [_1]',$pubkey).'</li>';
                        }
                        if (!$privkey) {
                            $chgtext .= '<li>'.&mt('Private key deleted').'</li>';
                        } else {
                            $chgtext .= '<li>'.&mt('Private key set to [_1]',$pubkey).'</li>';
                        }
                        $chgtext .= '</ul>';
                    } elsif ($type eq 'recaptchaversion') {
                        if ($savecaptcha{'captcha'} eq 'recaptcha') {
                            $chgtext .= &mt('ReCAPTCHA set to version [_1]',$savecaptcha{$type});
                        }
                    } elsif ($type eq 'emailusername') {
                        if (ref($cancreate{'emailusername'}) eq 'HASH') {
                            if (@statuses) {
                                foreach my $type (@statuses) {
                                    if (ref($cancreate{'emailusername'}{$type}) eq 'HASH') {
                                        if (keys(%{$cancreate{'emailusername'}{$type}}) > 0) {
                                            $chgtext .= &mt('When self-creating account with e-mail verification, the following information will be provided by [_1]:',"'$usertypes{$type}'").
                                                    '<ul>';
                                            foreach my $field (@{$infofields}) {
                                                if ($cancreate{'emailusername'}{$type}{$field}) {
                                                    $chgtext .= '<li>'.$infotitles->{$field}.'</li>';
                                                }
                                            }
                                            $chgtext .= '</ul>';
                                        } else {
                                            $chgtext .= &mt('When self creating account with e-mail verification, no information besides e-mail address will be provided by [_1].',"'$usertypes{$type}'").'<br />';
                                        }
                                    } else {
                                        $chgtext .= &mt('When self creating account with e-mail verification, no information besides e-mail address will be provided by [_1].',"'$usertypes{$type}'").'<br />';
                                    }
                                }
                            }
                        }
                    } elsif ($type eq 'notify') {
                        my $numapprove = 0;
                        if (ref($changes{'cancreate'}) eq 'ARRAY') {
                            if ((grep(/^notify$/,@{$changes{'cancreate'}})) && (ref($cancreate{'notify'}) eq 'HASH')) {
                                if ($cancreate{'notify'}{'approval'}) {
                                    $chgtext .= &mt('Notification of username requests requiring approval will be sent to: ').$cancreate{'notify'}{'approval'};
                                    $numapprove ++;
                                }
                            }
                        }
                        unless ($numapprove) {
                            $chgtext .= &mt('No Domain Coordinators will receive notification of username requests requiring approval.');
                        }
                    }
                    if ($chgtext) {
                        $resulttext .= '<li>'.$chgtext.'</li>';
                    }
                }
            }
            if ((ref($changes{'email_rule'}) eq 'ARRAY') && (@{$changes{'email_rule'}} > 0)) {
                my ($emailrules,$emailruleorder) =
                    &Apache::lonnet::inst_userrules($dom,'email');
                foreach my $type (@{$changes{'email_rule'}}) {
                    if (ref($email_rule{$type}) eq 'ARRAY') {
                        my $chgtext = '<ul>';
                        foreach my $rule (@{$email_rule{$type}}) {
                            if (ref($emailrules->{$rule}) eq 'HASH') {
                                $chgtext .= '<li>'.$emailrules->{$rule}{'name'}.'</li>';
                            }
                        }
                        $chgtext .= '</ul>';
                        my $typename;
                        if (@types) {
                            if ($type eq 'default') {
                                $typename = $othertitle;
                            } else {
                                $typename = $usertypes{$type};
                            } 
                            $chgtext .= &mt('(Affiliation: [_1])',$typename);
                        }
                        if (@{$email_rule{$type}} > 0) {
                            $resulttext .= '<li>'.
                                           &mt('Accounts may not be created by users verified by e-mail, for e-mail addresses of the following types: ',
                                               $usertypes{$type}).
                                           $chgtext.
                                           '</li>';
                        } else {
                            $resulttext .= '<li>'.
                                           &mt('There are now no restrictions on e-mail addresses which may be used for verification when a user requests an account.').
                                           '</li>'.
                                           &mt('(Affiliation: [_1])',$typename);
                        }
                    }
                }
            }
            if (ref($changes{'inststatus'}) eq 'ARRAY') {
                if (ref($save_inststatus{'inststatusguest'}) eq 'ARRAY') {
                    if (@{$save_inststatus{'inststatusguest'}} > 0) {
                        my $chgtext = '<ul>';
                        foreach my $type (@{$save_inststatus{'inststatusguest'}}) {
                            $chgtext .= '<li>'.$usertypes{$type}.'</li>';
                        }
                        $chgtext .= '</ul>';
                        $resulttext .= '<li>'.
                                       &mt('A user will self-report one of the following affiliations when requesting an account verified by e-mail: ').
                                          $chgtext.
                                       '</li>';
                    } else {
                        $resulttext .= '<li>'.
                                       &mt('No affiliations available for self-reporting when requesting an account verified by e-mail.').
                                       '</li>';
                    }
                }
            }
            if (ref($changes{'selfcreate'}) eq 'ARRAY') {
                $resulttext .= '<li>'.&mt('When self-creating institutional account:').'<ul>';
                my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
                foreach my $type (@{$changes{'selfcreate'}}) {
                    my $typename = $type;
                    if (keys(%usertypes) > 0) {
                        if ($usertypes{$type} ne '') {
                            $typename = $usertypes{$type};
                        }
                    }
                    my @modifiable;
                    $resulttext .= '<li>'.
                                    &mt('Self-creation of account by users with status: [_1]',
                                        '<span class="LC_cusr_emph">'.$typename.'</span>').
                                    ' - '.&mt('modifiable fields (if institutional data blank): ');
                    foreach my $field (@fields) {
                        if ($save_usermodify{'selfcreate'}{$type}{$field}) {
                            push(@modifiable,'<b>'.$fieldtitles{$field}.'</b>');
                        }
                    }
                    if (@modifiable > 0) {
                        $resulttext .= join(', ',@modifiable);
                    } else {
                        $resulttext .= &mt('none');
                    }
                    $resulttext .= '</li>';
                }
                $resulttext .= '</ul></li>';
            }
            $resulttext .= '</ul>';
            my $cachetime = 24*60*60;
            $domdefaults{'inststatusguest'} = $save_inststatus{'inststatusguest'};
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
        } else {
            $resulttext = &mt('No changes made to self-creation settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if ($warningmsg ne '') {
        $resulttext .= '<br /><span class="LC_warning">'.$warningmsg.'</span><br />';
    }
    return $resulttext;
}

sub process_captcha {
    my ($container,$changes,$newsettings,$currsettings) = @_;
    return unless ((ref($changes) eq 'HASH') && (ref($newsettings) eq 'HASH'));
    $newsettings->{'captcha'} = $env{'form.'.$container.'_captcha'};
    unless ($newsettings->{'captcha'} eq 'recaptcha' || $newsettings->{'captcha'} eq 'notused') {
        $newsettings->{'captcha'} = 'original';
    }
    my %current;
    if (ref($currsettings) eq 'HASH') {
        %current = %{$currsettings};
    }
    if ($current{'captcha'} ne $newsettings->{'captcha'}) {
        if ($container eq 'cancreate') {
            if (ref($changes->{'cancreate'}) eq 'ARRAY') {
                push(@{$changes->{'cancreate'}},'captcha');
            } elsif (!defined($changes->{'cancreate'})) {
                $changes->{'cancreate'} = ['captcha'];
            }
        } elsif ($container eq 'passwords') {
            $changes->{'reset'} = 1;
        } else {
            $changes->{'captcha'} = 1;
        }
    }
    my ($newpub,$newpriv,$currpub,$currpriv,$newversion,$currversion);
    if ($newsettings->{'captcha'} eq 'recaptcha') {
        $newpub = $env{'form.'.$container.'_recaptchapub'};
        $newpriv = $env{'form.'.$container.'_recaptchapriv'};
        $newpub =~ s/[^\w\-]//g;
        $newpriv =~ s/[^\w\-]//g;
        $newsettings->{'recaptchakeys'} = {
                                             public  => $newpub,
                                             private => $newpriv,
                                          };
        $newversion = $env{'form.'.$container.'_recaptchaversion'};
        $newversion =~ s/\D//g;
        if ($newversion ne '2') {
            $newversion = 1;
        }
        $newsettings->{'recaptchaversion'} = $newversion;
    }
    if (ref($current{'recaptchakeys'}) eq 'HASH') {
        $currpub = $current{'recaptchakeys'}{'public'};
        $currpriv = $current{'recaptchakeys'}{'private'};
        unless ($newsettings->{'captcha'} eq 'recaptcha') {
            $newsettings->{'recaptchakeys'} = {
                                                 public  => '',
                                                 private => '',
                                              }
        }
    }
    if ($current{'captcha'} eq 'recaptcha') {
        $currversion = $current{'recaptchaversion'};
        if ($currversion ne '2') {
            $currversion = 1;
        }
    }
    if ($currversion ne $newversion) {
        if ($container eq 'cancreate') {
            if (ref($changes->{'cancreate'}) eq 'ARRAY') {
                push(@{$changes->{'cancreate'}},'recaptchaversion');
            } elsif (!defined($changes->{'cancreate'})) {
                $changes->{'cancreate'} = ['recaptchaversion'];
            }
        } elsif ($container eq 'passwords') {
            $changes->{'reset'} = 1;
        } else {
            $changes->{'recaptchaversion'} = 1;
        }
    }
    if (($newpub ne $currpub) || ($newpriv ne $currpriv)) {
        if ($container eq 'cancreate') {
            if (ref($changes->{'cancreate'}) eq 'ARRAY') {
                push(@{$changes->{'cancreate'}},'recaptchakeys');
            } elsif (!defined($changes->{'cancreate'})) {
                $changes->{'cancreate'} = ['recaptchakeys'];
            }
        } elsif ($container eq 'passwords') {
            $changes->{'reset'} = 1;
        } else {
            $changes->{'recaptchakeys'} = 1;
        }
    }
    return;
}

sub modify_usermodification {
    my ($dom,%domconfig) = @_;
    my ($resulttext,%curr_usermodification,%changes,%modifyhash);
    if (ref($domconfig{'usermodification'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'usermodification'}})) {
            if ($key eq 'selfcreate') {
                $modifyhash{$key} = $domconfig{'usermodification'}{$key};
            } else {  
                $curr_usermodification{$key} = $domconfig{'usermodification'}{$key};
            }
        }
    }
    my @contexts = ('author','course');
    my %context_title = (
                           author => 'In author context',
                           course => 'In course context',
                        );
    my @fields = ('lastname','firstname','middlename','generation',
                  'permanentemail','id');
    my %roles = (
                  author => ['ca','aa'],
                  course => ['st','ep','ta','in','cr'],
                );
    my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
    foreach my $context (@contexts) {
        foreach my $role (@{$roles{$context}}) {
            my @modifiable =  &Apache::loncommon::get_env_multiple('form.canmodify_'.$role);
            foreach my $item (@fields) {
                if (grep(/^\Q$item\E$/,@modifiable)) {
                    $modifyhash{$context}{$role}{$item} = 1;
                } else {
                    $modifyhash{$context}{$role}{$item} = 0;
                }
            }
        }
        if (ref($curr_usermodification{$context}) eq 'HASH') {
            foreach my $role (@{$roles{$context}}) {
                if (ref($curr_usermodification{$context}{$role}) eq 'HASH') {
                    foreach my $field (@fields) {
                        if ($modifyhash{$context}{$role}{$field} ne 
                                $curr_usermodification{$context}{$role}{$field}) {
                            push(@{$changes{$context}},$role);
                            last;
                        }
                    }
                }
            }
        } else {
            foreach my $context (@contexts) {
                foreach my $role (@{$roles{$context}}) {
                    push(@{$changes{$context}},$role);
                }
            }
        }
    }
    my %usermodification_hash =  (
                                   usermodification => \%modifyhash,
                                 );
    my $putresult = &Apache::lonnet::put_dom('configuration',
                                             \%usermodification_hash,$dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made: ').'<ul>';
            foreach my $context (@contexts) {
                if (ref($changes{$context}) eq 'ARRAY') {
                    $resulttext .= '<li>'.$context_title{$context}.':<ul>';
                    if (ref($changes{$context}) eq 'ARRAY') {
                        foreach my $role (@{$changes{$context}}) {
                            my $rolename;
                            if ($role eq 'cr') {
                                $rolename = &mt('Custom');
                            } else {
                                $rolename = &Apache::lonnet::plaintext($role);
                            }
                            my @modifiable;
                            $resulttext .= '<li><span class="LC_cusr_emph">'.&mt('Target user with [_1] role',$rolename).'</span> - '.&mt('modifiable fields: ');
                            foreach my $field (@fields) {
                                if ($modifyhash{$context}{$role}{$field}) {
                                    push(@modifiable,$fieldtitles{$field});
                                }
                            }
                            if (@modifiable > 0) {
                                $resulttext .= join(', ',@modifiable);
                            } else {
                                $resulttext .= &mt('none'); 
                            }
                            $resulttext .= '</li>';
                        }
                        $resulttext .= '</ul></li>';
                    }
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to user modification settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_defaults {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,$mailmsgtxt,%newvalues,%changes,@errors);
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my @items = ('auth_def','auth_arg_def','lang_def','timezone_def','datelocale_def',
                 'portal_def');
    my @authtypes = ('internal','krb4','krb5','localauth','lti');
    foreach my $item (@items) {
        $newvalues{$item} = $env{'form.'.$item};
        if ($item eq 'auth_def') {
            if ($newvalues{$item} ne '') {
                if (!grep(/^\Q$newvalues{$item}\E$/,@authtypes)) {
                    push(@errors,$item);
                }
            }
        } elsif ($item eq 'lang_def') {
            if ($newvalues{$item} ne '') {
                if ($newvalues{$item} =~ /^(\w+)/) {
                    my $langcode = $1;
                    if ($langcode ne 'x_chef') {
                        if (code2language($langcode) eq '') {
                            push(@errors,$item);
                        }
                    }
                } else {
                    push(@errors,$item);
                }
            }
        } elsif ($item eq 'timezone_def') {
            if ($newvalues{$item} ne '') {
                if (!DateTime::TimeZone->is_valid_name($newvalues{$item})) {
                    push(@errors,$item);   
                }
            }
        } elsif ($item eq 'datelocale_def') {
            if ($newvalues{$item} ne '') {
                my @datelocale_ids = DateTime::Locale->ids();
                if (!grep(/^\Q$newvalues{$item}\E$/,@datelocale_ids)) {
                    push(@errors,$item);
                }
            }
        } elsif ($item eq 'portal_def') {
            if ($newvalues{$item} ne '') {
                unless ($newvalues{$item} =~ /^https?\:\/\/(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z]|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])\/?$/) {
                    push(@errors,$item);
                }
            }
        }
        if (grep(/^\Q$item\E$/,@errors)) {
            $newvalues{$item} = $domdefaults{$item};
        } elsif ($domdefaults{$item} ne $newvalues{$item}) {
            $changes{$item} = 1;
        }
        $domdefaults{$item} = $newvalues{$item};
    }
    my %staticdefaults = (
                           'intauth_cost'   => 10,
                           'intauth_check'  => 0,
                           'intauth_switch' => 0,
                         );
    foreach my $item ('intauth_cost','intauth_check','intauth_switch') {
        if (exists($domdefaults{$item})) {
            $newvalues{$item} = $domdefaults{$item};
        } else {
            $newvalues{$item} = $staticdefaults{$item};
        }
    }
    my %defaults_hash = (
                         defaults => \%newvalues,
                        );
    my $title = &defaults_titles();

    my $currinststatus;
    if (ref($domconfig{'inststatus'}) eq 'HASH') {
        $currinststatus = $domconfig{'inststatus'};
    } else {
        my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
        $currinststatus = {
                             inststatustypes => $usertypes,
                             inststatusorder => $types,
                             inststatusguest => [],
                          };
    }
    my @todelete = &Apache::loncommon::get_env_multiple('form.inststatus_delete');
    my @allpos;
    my %alltypes;
    my @inststatusguest;
    if (ref($currinststatus->{'inststatusguest'}) eq 'ARRAY') {
        foreach my $type (@{$currinststatus->{'inststatusguest'}}) {
            unless (grep(/^\Q$type\E$/,@todelete)) {
                push(@inststatusguest,$type);
            }
        }
    }
    my ($currtitles,$currorder);
    if (ref($currinststatus) eq 'HASH') {
        if (ref($currinststatus->{'inststatusorder'}) eq 'ARRAY') {
            foreach my $type (@{$currinststatus->{'inststatusorder'}}) {
                if (ref($currinststatus->{inststatustypes}) eq 'HASH') {
                    if ($currinststatus->{inststatustypes}->{$type} ne '') {
                        $currtitles .= $currinststatus->{inststatustypes}->{$type}.',';
                    }
                }
                unless (grep(/^\Q$type\E$/,@todelete)) { 
                    my $position = $env{'form.inststatus_pos_'.$type};
                    $position =~ s/\D+//g;
                    $allpos[$position] = $type;
                    $alltypes{$type} = $env{'form.inststatus_title_'.$type};
                    $alltypes{$type} =~ s/`//g;
                }
            }
            $currorder = join(',',@{$currinststatus->{'inststatusorder'}});
            $currtitles =~ s/,$//;
        }
    }
    if ($env{'form.addinststatus'}) {
        my $newtype = $env{'form.addinststatus'};
        $newtype =~ s/\W//g;
        unless (exists($alltypes{$newtype})) {
            $alltypes{$newtype} = $env{'form.addinststatus_title'};
            $alltypes{$newtype} =~ s/`//g; 
            my $position = $env{'form.addinststatus_pos'};
            $position =~ s/\D+//g;
            if ($position ne '') {
                $allpos[$position] = $newtype;
            }
        }
    }
    my @orderedstatus;
    foreach my $type (@allpos) {
        unless (($type eq '') || (grep(/^\Q$type\E$/,@orderedstatus))) {
            push(@orderedstatus,$type);
        }
    }
    foreach my $type (keys(%alltypes)) {
        unless (grep(/^\Q$type\E$/,@orderedstatus)) {
            delete($alltypes{$type});
        }
    }
    $defaults_hash{'inststatus'} = {
                                     inststatustypes => \%alltypes,
                                     inststatusorder => \@orderedstatus,
                                     inststatusguest => \@inststatusguest,
                                   };
    if (ref($defaults_hash{'inststatus'}) eq 'HASH') {
        foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
            $domdefaults{$item} = $defaults_hash{'inststatus'}{$item};
        }
    }
    if ($currorder ne join(',',@orderedstatus)) {
        $changes{'inststatus'}{'inststatusorder'} = 1;
    }
    my $newtitles;
    foreach my $item (@orderedstatus) {
        $newtitles .= $alltypes{$item}.',';
    }
    $newtitles =~ s/,$//;
    if ($currtitles ne $newtitles) {
        $changes{'inststatus'}{'inststatustypes'} = 1;
    }
    my $putresult = &Apache::lonnet::put_dom('configuration',\%defaults_hash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            my $version = &Apache::lonnet::get_server_loncaparev($dom);
            my $mailmsgtext = "Changes made to domain settings in a LON-CAPA installation - domain: $dom (running version: $version) - dns_domain.tab needs to be updated with the following changes, to support legacy 2.4, 2.5 and 2.6 versions of LON-CAPA.\n\n";
            foreach my $item (sort(keys(%changes))) {
                if ($item eq 'inststatus') {
                    if (ref($changes{'inststatus'}) eq 'HASH') {
                        if (@orderedstatus) {
                            $resulttext .= '<li>'.&mt('Institutional user status types set to:').' ';
                            foreach my $type (@orderedstatus) { 
                                $resulttext .= $alltypes{$type}.', ';
                            }
                            $resulttext =~ s/, $//;
                            $resulttext .= '</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('Institutional user status types deleted').'</li>'; 
                        }
                    }
                } else {
                    my $value = $env{'form.'.$item};
                    if ($value eq '') {
                        $value = &mt('none');
                    } elsif ($item eq 'auth_def') {
                        my %authnames = &authtype_names();
                        my %shortauth = (
                                          internal   => 'int',
                                          krb4       => 'krb4',
                                          krb5       => 'krb5',
                                          localauth  => 'loc',
                                          lti        => 'lti',
                        );
                        $value = $authnames{$shortauth{$value}};
                    }
                    $resulttext .= '<li>'.&mt('[_1] set to "[_2]"',$title->{$item},$value).'</li>';
                    $mailmsgtext .= "$title->{$item} set to $value\n";  
                }
            }
            $resulttext .= '</ul>';
            $mailmsgtext .= "\n";
            my $cachetime = 24*60*60;
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
            if ($changes{'auth_def'} || $changes{'auth_arg_def'} || $changes{'lang_def'} || $changes{'datelocale_def'}) {
                my $notify = 1;
                if (ref($domconfig{'contacts'}) eq 'HASH') {
                    if ($domconfig{'contacts'}{'reportupdates'} == 0) {
                        $notify = 0;
                    }
                }
                if ($notify) {
                    &Apache::lonmsg::sendemail('installrecord@loncapa.org',
                                               "LON-CAPA Domain Settings Change - $dom",
                                               $mailmsgtext);
                }
            }
        } else {
            $resulttext = &mt('No changes made to default authentication/language/timezone settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    if (@errors > 0) {
        $resulttext .= '<br />'.&mt('The following were left unchanged because the values entered were invalid:');
        foreach my $item (@errors) {
            $resulttext .= ' "'.$title->{$item}.'",';
        }
        $resulttext =~ s/,$//;
    }
    return $resulttext;
}

sub modify_scantron {
    my ($r,$dom,$confname,$lastactref,%domconfig) = @_;
    my ($resulttext,%confhash,%changes,$errors);
    my $custom = 'custom.tab';
    my $default = 'default.tab';
    my $servadm = $r->dir_config('lonAdmEMail');
    my ($configuserok,$author_ok,$switchserver) =
        &config_check($dom,$confname,$servadm);
    if ($env{'form.scantronformat.filename'} ne '') {
        my $error;
        if ($configuserok eq 'ok') {
            if ($switchserver) {
                $error = &mt("Upload of bubblesheet format file is not permitted to this server: [_1]",$switchserver);
            } else {
                if ($author_ok eq 'ok') {
                    my ($result,$scantronurl) =
                        &publishlogo($r,'upload','scantronformat',$dom,
                                     $confname,'scantron','','',$custom);
                    if ($result eq 'ok') {
                        $confhash{'scantron'}{'scantronformat'} = $scantronurl;
                        $changes{'scantronformat'} = 1;
                    } else {
                        $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$custom,$result);
                    }
                } else {
                    $error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$custom,$confname,$dom,$author_ok);
                }
            }
        } else {
            $error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$custom,$confname,$dom,$configuserok);
        }
        if ($error) {
            &Apache::lonnet::logthis($error);
            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
        }
    }
    if (ref($domconfig{'scantron'}) eq 'HASH') {
        if ($domconfig{'scantron'}{'scantronformat'} ne '') {
            if ($env{'form.scantronformat_del'}) {
                $confhash{'scantron'}{'scantronformat'} = '';
                $changes{'scantronformat'} = 1;
            } else {
                $confhash{'scantron'}{'scantronformat'} = $domconfig{'scantron'}{'scantronformat'};
            }
        }
    }
    my @options = ('hdr','pad','rem');
    my @fields = &scantroncsv_fields();
    my %titles = &scantronconfig_titles();
    my @formats = &Apache::loncommon::get_env_multiple('form.scantronconfig');
    my ($newdat,$currdat,%newcol,%currcol);
    if (grep(/^dat$/,@formats)) {
        $confhash{'scantron'}{config}{dat} = 1;
        $newdat = 1;
    } else {
        $newdat = 0;
    }
    if (grep(/^csv$/,@formats)) {
        my %bynum;
        foreach my $field (@fields) {
            if ($env{'form.scantronconfig_csv_'.$field} =~ /^(\d+)$/) {
                my $posscol = $1;
                if (($posscol < 20) && (!$bynum{$posscol})) {
                    $confhash{'scantron'}{config}{csv}{fields}{$field} = $posscol;
                    $bynum{$posscol} = $field;
                    $newcol{$field} = $posscol;
                }
            }
        }
        if (keys(%newcol)) {
            foreach my $option (@options) {
                if ($env{'form.scantroncsv_'.$option}) {
                    $confhash{'scantron'}{config}{csv}{options}{$option} = 1;
                }
            }
        }
    }
    $currdat = 1;
    if (ref($domconfig{'scantron'}) eq 'HASH') {
        if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
            unless (exists($domconfig{'scantron'}{'config'}{'dat'})) {
                $currdat = 0;
            }
            if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
                if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
                    %currcol = %{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}};
                }
            }
        }
    }
    if ($currdat != $newdat) {
        $changes{'config'} = 1;
    } else {
        foreach my $field (@fields) {
            if ($currcol{$field} ne '') {
                if ($currcol{$field} ne $newcol{$field}) {
                    $changes{'config'} = 1;
                    last;
                }
            } elsif ($newcol{$field} ne '') {
                $changes{'config'} = 1;
                last;
            }
        }
    }
    if (keys(%confhash) > 0) {
        my $putresult = &Apache::lonnet::put_dom('configuration',\%confhash,
                                                 $dom);
        if ($putresult eq 'ok') {
            if (keys(%changes) > 0) {
                if (ref($confhash{'scantron'}) eq 'HASH') {
                    $resulttext = &mt('Changes made:').'<ul>';
                    if ($changes{'scantronformat'}) {
                        if ($confhash{'scantron'}{'scantronformat'} eq '') {
                            $resulttext .= '<li>'.&mt('[_1] bubblesheet format file removed; [_2] file will be used for courses in this domain.',$custom,$default).'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('Custom bubblesheet format file ([_1]) uploaded for use with courses in this domain.',$custom).'</li>';
                        }
                    }
                    if ($changes{'config'}) {
                        if (ref($confhash{'scantron'}{'config'}) eq 'HASH') {
                            if ($confhash{'scantron'}{'config'}{'dat'}) {
                                $resulttext .= '<li>'.&mt('Bubblesheet data upload formats includes .dat format').'</li>';
                            }
                            if (ref($confhash{'scantron'}{'config'}{'csv'}) eq 'HASH') {
                                if (ref($confhash{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
                                    if (keys(%{$confhash{'scantron'}{'config'}{'csv'}{'fields'}})) {
                                        $resulttext .= '<li>'.&mt('Bubblesheet data upload formats includes .csv format, with following fields/column numbers supported:').'<ul>';
                                        foreach my $field (@fields) {
                                            if ($confhash{'scantron'}{'config'}{'csv'}{'fields'}{$field} ne '') {
                                                my $showcol = $confhash{'scantron'}{'config'}{'csv'}{'fields'}{$field} + 1;
                                                $resulttext .= '<li>'.$titles{$field}.': '.$showcol.'</li>';
                                            }
                                        }
                                        $resulttext .= '</ul></li>';
                                        if (ref($confhash{'scantron'}{'config'}{'csv'}{'options'}) eq 'HASH') {
                                            if (keys(%{$confhash{'scantron'}{'config'}{'csv'}{'options'}})) {
                                                $resulttext .= '<li>'.&mt('Bubblesheet data upload formats includes .csv format, with following options:').'<ul>';
                                                foreach my $option (@options) {
                                                    if ($confhash{'scantron'}{'config'}{'csv'}{'options'}{$option} ne '') {
                                                        $resulttext .= '<li>'.$titles{$option}.'</li>';
                                                    }
                                                }
                                                $resulttext .= '</ul></li>';
                                            }
                                        }
                                    }
                                }
                            }
                        } else {
                            $resulttext .= '<li>'.&mt('No bubblesheet data upload formats set -- will default to assuming .dat format').'</li>';
                        }
                    }
                    $resulttext .= '</ul>';
                } else {
                    $resulttext = &mt('Changes made to bubblesheet format file.');
                }
                &Apache::loncommon::devalidate_domconfig_cache($dom);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domainconfig'} = 1;
                }
            } else {
                $resulttext = &mt('No changes made to bubblesheet format settings');
            }
        } else {
            $resulttext = '<span class="LC_error">'.
                &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } else {
        $resulttext = &mt('No changes made to bubblesheet format file'); 
    }
    if ($errors) {
        $resulttext .= '<p>'.&mt('The following errors occurred: ').'<ul>'.
                       $errors.'</ul></p>';
    }
    return $resulttext;
}

sub modify_coursecategories {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,%deletions,%reorderings,%needreordering,%adds,%changes,$errors,
        $cathash);
    my @deletecategory = &Apache::loncommon::get_env_multiple('form.deletecategory');
    my @catitems = ('unauth','auth');
    my @cattypes = ('std','domonly','codesrch','none');
    if (ref($domconfig{'coursecategories'}) eq 'HASH') {
        $cathash = $domconfig{'coursecategories'}{'cats'};
        if ($domconfig{'coursecategories'}{'togglecats'} ne $env{'form.togglecats'}) {
            $changes{'togglecats'} = 1;
            $domconfig{'coursecategories'}{'togglecats'} = $env{'form.togglecats'};
        }
        if ($domconfig{'coursecategories'}{'categorize'} ne $env{'form.categorize'}) {
            $changes{'categorize'} = 1;
            $domconfig{'coursecategories'}{'categorize'} = $env{'form.categorize'};
        }
        if ($domconfig{'coursecategories'}{'togglecatscomm'} ne $env{'form.togglecatscomm'}) {
            $changes{'togglecatscomm'} = 1;
            $domconfig{'coursecategories'}{'togglecatscomm'} = $env{'form.togglecatscomm'};
        }
        if ($domconfig{'coursecategories'}{'categorizecomm'} ne $env{'form.categorizecomm'}) {
            $changes{'categorizecomm'} = 1;
            $domconfig{'coursecategories'}{'categorizecomm'} = $env{'form.categorizecomm'};

        }
        if ($domconfig{'coursecategories'}{'togglecatsplace'} ne $env{'form.togglecatsplace'}) {
            $changes{'togglecatsplace'} = 1;
            $domconfig{'coursecategories'}{'togglecatsplace'} = $env{'form.togglecatsplace'};
        }
        if ($domconfig{'coursecategories'}{'categorizeplace'} ne $env{'form.categorizeplace'}) {
            $changes{'categorizeplace'} = 1;
            $domconfig{'coursecategories'}{'categorizeplace'} = $env{'form.categorizeplace'};
        }
        foreach my $item (@catitems) {
            if (grep(/^\Q$env{'form.coursecat_'.$item}\E$/,@cattypes)) {
                if ($domconfig{'coursecategories'}{$item} ne $env{'form.coursecat_'.$item}) {
                    $changes{$item} = 1;
                    $domconfig{'coursecategories'}{$item} = $env{'form.coursecat_'.$item};
                }
            }
        }
    } else {
        $changes{'togglecats'} = 1;
        $changes{'categorize'} = 1;
        $changes{'togglecatscomm'} = 1;
        $changes{'categorizecomm'} = 1;
        $changes{'togglecatsplace'} = 1;
        $changes{'categorizeplace'} = 1;
        $domconfig{'coursecategories'} = {
                                             togglecats => $env{'form.togglecats'},
                                             categorize => $env{'form.categorize'},
                                             togglecatscomm => $env{'form.togglecatscomm'},
                                             categorizecomm => $env{'form.categorizecomm'},
                                             togglecatsplace => $env{'form.togglecatsplace'},
                                             categorizeplace => $env{'form.categorizeplace'},
                                         };
        foreach my $item (@catitems) {
            if ($env{'form.coursecat_'.$item} ne 'std') {
                $changes{$item} = 1;
            }
            if (grep(/^\Q$env{'form.coursecat_'.$item}\E$/,@cattypes)) {
                $domconfig{'coursecategories'}{$item} = $env{'form.coursecat_'.$item};
            }
        }
    }
    if (ref($cathash) eq 'HASH') {
        if (($domconfig{'coursecategories'}{'cats'}{'instcode::0'} ne '')  && ($env{'form.instcode'} == 0)) {
            push (@deletecategory,'instcode::0');
        }
        if (($domconfig{'coursecategories'}{'cats'}{'communities::0'} ne '')  && ($env{'form.communities'} == 0)) {
            push(@deletecategory,'communities::0');
        }
        if (($domconfig{'coursecategories'}{'cats'}{'placement::0'} ne '')  && ($env{'form.placement'} == 0)) {
            push(@deletecategory,'placement::0');
        }
    }
    my (@predelcats,@predeltrails,%predelallitems,%sort_by_deltrail);
    if (ref($cathash) eq 'HASH') {
        if (@deletecategory > 0) {
            #FIXME Need to remove category from all courses using a deleted category 
            &Apache::loncommon::extract_categories($cathash,\@predelcats,\@predeltrails,\%predelallitems);
            foreach my $item (@deletecategory) {
                if ($domconfig{'coursecategories'}{'cats'}{$item} ne '') {
                    delete($domconfig{'coursecategories'}{'cats'}{$item});
                    $deletions{$item} = 1;
                    &recurse_cat_deletes($item,$cathash,\%deletions);
                }
            }
        }
        foreach my $item (keys(%{$cathash})) {
            my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$item);
            if ($cathash->{$item} ne $env{'form.'.$item}) {
                $reorderings{$item} = 1;
                $domconfig{'coursecategories'}{'cats'}{$item} = $env{'form.'.$item};
            }
            if ($env{'form.addcategory_name_'.$item} ne '') {
                my $newcat = $env{'form.addcategory_name_'.$item};
                my $newdepth = $depth+1;
                my $newitem = &escape($newcat).':'.&escape($cat).':'.$newdepth;
                $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.addcategory_pos_'.$item};
                $adds{$newitem} = 1; 
            }
            if ($env{'form.subcat_'.$item} ne '') {
                my $newcat = $env{'form.subcat_'.$item};
                my $newdepth = $depth+1;
                my $newitem = &escape($newcat).':'.&escape($cat).':'.$newdepth;
                $domconfig{'coursecategories'}{'cats'}{$newitem} = 0;
                $adds{$newitem} = 1;
            }
        }
    }
    if ($env{'form.instcode'} eq '1') {
        if (ref($cathash) eq 'HASH') {
            my $newitem = 'instcode::0';
            if ($cathash->{$newitem} eq '') {  
                $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.instcode_pos'};
                $adds{$newitem} = 1;
            }
        } else {
            my $newitem = 'instcode::0';
            $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.instcode_pos'};
            $adds{$newitem} = 1;
        }
    }
    if ($env{'form.communities'} eq '1') {
        if (ref($cathash) eq 'HASH') {
            my $newitem = 'communities::0';
            if ($cathash->{$newitem} eq '') {
                $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.communities_pos'};
                $adds{$newitem} = 1;
            }
        } else {
            my $newitem = 'communities::0';
            $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.communities_pos'};
            $adds{$newitem} = 1;
        }
    }
    if ($env{'form.placement'} eq '1') {
        if (ref($cathash) eq 'HASH') {
            my $newitem = 'placement::0';
            if ($cathash->{$newitem} eq '') {
                $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.placement_pos'};
                $adds{$newitem} = 1;
            }
        } else {
            my $newitem = 'placement::0';
            $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.placement_pos'};
            $adds{$newitem} = 1;
        }
    }
    if ($env{'form.addcategory_name'} ne '') {
        if (($env{'form.addcategory_name'} ne 'instcode') &&
            ($env{'form.addcategory_name'} ne 'communities') &&
            ($env{'form.addcategory_name'} ne 'placement')) {
            my $newitem = &escape($env{'form.addcategory_name'}).'::0';
            $domconfig{'coursecategories'}{'cats'}{$newitem} = $env{'form.addcategory_pos'};
            $adds{$newitem} = 1;
        }
    }
    my $putresult;
    if ((keys(%deletions) > 0) || (keys(%reorderings) > 0) || (keys(%adds) > 0)) {
        if (keys(%deletions) > 0) {
            foreach my $key (keys(%deletions)) {
                if ($predelallitems{$key} ne '') {
                    $sort_by_deltrail{$predelallitems{$key}} = $predeltrails[$predelallitems{$key}];
                }
            }
        }
        my (@chkcats,@chktrails,%chkallitems);
        &Apache::loncommon::extract_categories($domconfig{'coursecategories'}{'cats'},\@chkcats,\@chktrails,\%chkallitems);
        if (ref($chkcats[0]) eq 'ARRAY') {
            my $depth = 0;
            my $chg = 0;
            for (my $i=0; $i<@{$chkcats[0]}; $i++) {
                my $name = $chkcats[0][$i];
                my $item;
                if ($name eq '') {
                    $chg ++;
                } else {
                    $item = &escape($name).'::0';
                    if ($chg) {
                        $domconfig{'coursecategories'}{'cats'}{$item} -= $chg;
                    }
                    $depth ++; 
                    &recurse_check(\@chkcats,$domconfig{'coursecategories'}{'cats'},$depth,$name);
                    $depth --;
                }
            }
        }
    }
    if ((keys(%changes) > 0) || (keys(%deletions) > 0) || (keys(%reorderings) > 0) || (keys(%adds) > 0)) {
        $putresult = &Apache::lonnet::put_dom('configuration',\%domconfig,$dom);
        if ($putresult eq 'ok') {
            my %title = (
                         togglecats     => 'Show/Hide a course in catalog',
                         categorize     => 'Assign a category to a course',
                         togglecatscomm => 'Show/Hide a community in catalog',
                         categorizecomm => 'Assign a category to a community',
                        );
            my %level = (
                         dom  => 'set in Domain ("Modify Course/Community")',
                         crs  => 'set in Course ("Course Configuration")',
                         comm => 'set in Community ("Community Configuration")',
                         none     => 'No catalog',
                         std      => 'Standard catalog',
                         domonly  => 'Domain-only catalog',
                         codesrch => 'Code search form',
                        );
            $resulttext = &mt('Changes made:').'<ul>';
            if ($changes{'togglecats'}) {
                $resulttext .= '<li>'.&mt("$title{'togglecats'} $level{$env{'form.togglecats'}}").'</li>'; 
            }
            if ($changes{'categorize'}) {
                $resulttext .= '<li>'.&mt("$title{'categorize'} $level{$env{'form.categorize'}}").'</li>';
            }
            if ($changes{'togglecatscomm'}) {
                $resulttext .= '<li>'.&mt("$title{'togglecatscomm'} $level{$env{'form.togglecatscomm'}}").'</li>';
            }
            if ($changes{'categorizecomm'}) {
                $resulttext .= '<li>'.&mt("$title{'categorizecomm'} $level{$env{'form.categorizecomm'}}").'</li>';
            }
            if ($changes{'unauth'}) {
                $resulttext .= '<li>'.&mt('Catalog type for unauthenticated users set to "'.$level{$env{'form.coursecat_unauth'}}.'"').'</li>';
            }
            if ($changes{'auth'}) {
                $resulttext .= '<li>'.&mt('Catalog type for authenticated users set to "'.$level{$env{'form.coursecat_auth'}}.'"').'</li>';
            }
            if ((keys(%deletions) > 0) || (keys(%reorderings) > 0) || (keys(%adds) > 0)) {
                my $cathash;
                if (ref($domconfig{'coursecategories'}) eq 'HASH') {
                    $cathash = $domconfig{'coursecategories'}{'cats'};
                } else {
                    $cathash = {};
                } 
                my (@cats,@trails,%allitems);
                    &Apache::loncommon::extract_categories($cathash,\@cats,\@trails,\%allitems);
                if (keys(%deletions) > 0) {
                    $resulttext .= '<li>'.&mt('Deleted categories:').'<ul>';
                    foreach my $predeltrail (sort {$a <=> $b } (keys(%sort_by_deltrail))) { 
                        $resulttext .= '<li>'.$predeltrails[$predeltrail].'</li>';
                    }
                    $resulttext .= '</ul></li>';
                }
                if (keys(%reorderings) > 0) {
                    my %sort_by_trail;
                    $resulttext .= '<li>'.&mt('Reordered categories:').'<ul>';
                    foreach my $key (keys(%reorderings)) {
                        if ($allitems{$key} ne '') {
                            $sort_by_trail{$allitems{$key}} = $trails[$allitems{$key}];
                        }
                    }
                    foreach my $trail (sort {$a <=> $b } (keys(%sort_by_trail))) {
                        $resulttext .= '<li>'.$trails[$trail].'</li>';
                    }
                    $resulttext .= '</ul></li>';
                }
                if (keys(%adds) > 0) {
                    my %sort_by_trail;
                    $resulttext .= '<li>'.&mt('Added categories:').'<ul>';
                    foreach my $key (keys(%adds)) {
                        if ($allitems{$key} ne '') {
                            $sort_by_trail{$allitems{$key}} = $trails[$allitems{$key}];
                        }
                    }
                    foreach my $trail (sort {$a <=> $b } (keys(%sort_by_trail))) {
                        $resulttext .= '<li>'.$trails[$trail].'</li>';
                    }
                    $resulttext .= '</ul></li>';
                }
                &Apache::lonnet::do_cache_new('cats',$dom,$cathash,3600);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'cats'} = 1;
                }
            }
            $resulttext .= '</ul>';
            if ($changes{'unauth'} || $changes{'auth'}) {
                my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
                if ($changes{'auth'}) {
                    $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
                }
                if ($changes{'unauth'}) {
                    $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
                }
                my $cachetime = 24*60*60;
                &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domdefaults'} = 1;
                }
            }
        } else {
            $resulttext = '<span class="LC_error">'.
                          &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } else {
        $resulttext = &mt('No changes made to course and community categories');
    }
    return $resulttext;
}

sub modify_serverstatuses {
    my ($dom,%domconfig) = @_;
    my ($resulttext,%changes,%currserverstatus,%newserverstatus);
    if (ref($domconfig{'serverstatuses'}) eq 'HASH') {
        %currserverstatus = %{$domconfig{'serverstatuses'}};
    }
    my @pages = &serverstatus_pages();
    foreach my $type (@pages) {
        $newserverstatus{$type}{'namedusers'} = '';
        $newserverstatus{$type}{'machines'} = '';
        if (defined($env{'form.'.$type.'_namedusers'})) {
            my @users = split(/,/,$env{'form.'.$type.'_namedusers'});
            my @okusers;
            foreach my $user (@users) {
                my ($uname,$udom) = split(/:/,$user);
                if (($udom =~ /^$match_domain$/) &&   
                    (&Apache::lonnet::domain($udom)) &&
                    ($uname =~ /^$match_username$/)) {
                    if (!grep(/^\Q$user\E/,@okusers)) {
                        push(@okusers,$user);
                    }
                }
            }
            if (@okusers > 0) {
                 @okusers = sort(@okusers);
                 $newserverstatus{$type}{'namedusers'} = join(',',@okusers);
            }
        }
        if (defined($env{'form.'.$type.'_machines'})) {
            my @machines = split(/,/,$env{'form.'.$type.'_machines'});
            my @okmachines;
            foreach my $ip (@machines) {
                my @parts = split(/\./,$ip);
                next if (@parts < 4);
                my $badip = 0;
                for (my $i=0; $i<4; $i++) {
                    if (!(($parts[$i] >= 0) && ($parts[$i] <= 255))) {
                        $badip = 1;
                        last;
                    }
                }
                if (!$badip) {
                    push(@okmachines,$ip);     
                }
            }
            @okmachines = sort(@okmachines);
            $newserverstatus{$type}{'machines'} = join(',',@okmachines);
        }
    }
    my %serverstatushash =  (
                                serverstatuses => \%newserverstatus,
                            );
    foreach my $type (@pages) {
        foreach my $setting ('namedusers','machines') {
            my (@current,@new);
            if (ref($currserverstatus{$type}) eq 'HASH') {
                if ($currserverstatus{$type}{$setting} ne '') { 
                    @current = split(/,/,$currserverstatus{$type}{$setting});
                }
            }
            if ($newserverstatus{$type}{$setting} ne '') {
                @new = split(/,/,$newserverstatus{$type}{$setting});
            }
            if (@current > 0) {
                if (@new > 0) {
                    foreach my $item (@current) {
                        if (!grep(/^\Q$item\E$/,@new)) {
                            $changes{$type}{$setting} = 1;
                            last;
                        }
                    }
                    foreach my $item (@new) {
                        if (!grep(/^\Q$item\E$/,@current)) {
                            $changes{$type}{$setting} = 1;
                            last;
                        }
                    }
                } else {
                    $changes{$type}{$setting} = 1;
                }
            } elsif (@new > 0) {
                $changes{$type}{$setting} = 1;
            }
        }
    }
    if (keys(%changes) > 0) {
        my $titles= &LONCAPA::lonauthcgi::serverstatus_titles();
        my $putresult = &Apache::lonnet::put_dom('configuration',
                                                 \%serverstatushash,$dom);
        if ($putresult eq 'ok') {
            $resulttext .= &mt('Changes made:').'<ul>';
            foreach my $type (@pages) {
                if (ref($changes{$type}) eq 'HASH') {
                    $resulttext .= '<li>'.$titles->{$type}.'<ul>';
                    if ($changes{$type}{'namedusers'}) {
                        if ($newserverstatus{$type}{'namedusers'} eq '') {
                            $resulttext .= '<li>'.&mt("Access terminated for all specific (named) users").'</li>'."\n";
                        } else {
                            $resulttext .= '<li>'.&mt("Access available for the following specified users: ").$newserverstatus{$type}{'namedusers'}.'</li>'."\n";
                        }
                    }
                    if ($changes{$type}{'machines'}) {
                        if ($newserverstatus{$type}{'machines'} eq '') {
                            $resulttext .= '<li>'.&mt("Access terminated for all specific IP addresses").'</li>'."\n";
                        } else {
                            $resulttext .= '<li>'.&mt("Access available for the following specified IP addresses: ").$newserverstatus{$type}{'machines'}.'</li>'."\n";
                        }

                    }
                    $resulttext .= '</ul></li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = '<span class="LC_error">'.
                          &mt('An error occurred saving access settings for server status pages: [_1].',$putresult).'</span>';

        }
    } else {
        $resulttext = &mt('No changes made to access to server status pages');
    }
    return $resulttext;
}

sub modify_helpsettings {
    my ($r,$dom,$confname,$lastactref,%domconfig) = @_;
    my ($resulttext,$errors,%changes,%helphash);
    my %defaultchecked = ('submitbugs' => 'on');
    my @offon = ('off','on');
    my @toggles = ('submitbugs');
    my %current = ('submitbugs' => '',
                   'adhoc'      => {},
                  );
    if (ref($domconfig{'helpsettings'}) eq 'HASH') {
        %current = %{$domconfig{'helpsettings'}};
    }
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    foreach my $item (@toggles) {
        if ($defaultchecked{$item} eq 'on') { 
            if ($current{$item} eq '') {
                if ($env{'form.'.$item} eq '0') {
                    $changes{$item} = 1;
                }
            } elsif ($current{$item} ne $env{'form.'.$item}) {
                $changes{$item} = 1;
            }
        } elsif ($defaultchecked{$item} eq 'off') {
            if ($current{$item} eq '') {
                if ($env{'form.'.$item} eq '1') {
                    $changes{$item} = 1;
                }
            } elsif ($current{$item} ne $env{'form.'.$item}) {
                $changes{$item} = 1;
            }
        }
        if (($env{'form.'.$item} eq '0') || ($env{'form.'.$item} eq '1')) {
            $helphash{'helpsettings'}{$item} = $env{'form.'.$item};
        }
    }
    my $maxnum = $env{'form.helproles_maxnum'};
    my $confname = $dom.'-domainconfig';
    my %existing=&Apache::lonnet::dump('roles',$dom,$confname,'rolesdef_');
    my (@allpos,%newsettings,%changedprivs,$newrole);
    my ($othertitle,$usertypes,$types) = &Apache::loncommon::sorted_inst_types($dom);
    my @accesstypes = ('all','dh','da','none','status','inc','exc');
    my %domhelpdesk = &Apache::lonnet::get_active_domroles($dom,['dh','da']);
    my %lt = &Apache::lonlocal::texthash(
                    s      => 'system',
                    d      => 'domain',
                    order  => 'Display order',
                    access => 'Role usage',
                    all    => 'All with domain helpdesk or helpdesk assistant role',
                    dh     => 'All with domain helpdesk role',
                    da     => 'All with domain helpdesk assistant role',
                    none   => 'None',
                    status => 'Determined based on institutional status',
                    inc    => 'Include all, but exclude specific personnel',
                    exc    => 'Exclude all, but include specific personnel',
    );
    for (my $num=0; $num<=$maxnum; $num++) {
        my ($prefix,$identifier,$rolename,%curr);
        if ($num == $maxnum) {
            next unless ($env{'form.newcusthelp'} == $maxnum);
            $identifier = 'custhelp'.$num;
            $prefix = 'helproles_'.$num;
            $rolename = $env{'form.custhelpname'.$num};
            $rolename=~s/[^A-Za-z0-9]//gs;
            next if ($rolename eq '');
            next if (exists($existing{'rolesdef_'.$rolename}));
            my %newprivs = &Apache::lonuserutils::custom_role_update($rolename,$identifier);
            my $result = &Apache::lonnet::definerole($rolename,$newprivs{'s'},$newprivs{'d'},
                                                     $newprivs{'c'},$confname,$dom);
            if ($result ne 'ok') {
                $errors .= '<li><span class="LC_error">'.
                           &mt('An error occurred storing the new custom role: [_1]',
                           $result).'</span></li>';
                next;
            } else {
                $changedprivs{$rolename} = \%newprivs;
                $newrole = $rolename;
            }
        } else {
            $prefix = 'helproles_'.$num;
            $rolename = $env{'form.'.$prefix};
            next if ($rolename eq '');
            next unless (exists($existing{'rolesdef_'.$rolename}));
            $identifier = 'custhelp'.$num;
            my %newprivs = &Apache::lonuserutils::custom_role_update($rolename,$identifier);
            my %currprivs;
            ($currprivs{'s'},$currprivs{'d'},$currprivs{'c'}) =
                split(/\_/,$existing{'rolesdef_'.$rolename});
            foreach my $level ('c','d','s') {
                if ($newprivs{$level} ne $currprivs{$level}) {
                    my $result = &Apache::lonnet::definerole($rolename,$newprivs{'s'},$newprivs{'d'},
                                                             $newprivs{'c'},$confname,$dom);
                    if ($result ne 'ok') {
                        $errors .= '<li><span class="LC_error">'.
                                   &mt('An error occurred storing privileges for existing role [_1]: [_2]',
                                       $rolename,$result).'</span></li>';
                    } else {
                        $changedprivs{$rolename} = \%newprivs;
                    }
                    last;
                }
            }
            if (ref($current{'adhoc'}) eq 'HASH') {
                if (ref($current{'adhoc'}{$rolename}) eq 'HASH') {
                    %curr = %{$current{'adhoc'}{$rolename}};
                }
            }
        }
        my $newpos = $env{'form.'.$prefix.'_pos'};
        $newpos =~ s/\D+//g;
        $allpos[$newpos] = $rolename;
        my $newdesc = $env{'form.'.$prefix.'_desc'};
        $helphash{'helpsettings'}{'adhoc'}{$rolename}{'desc'} = $newdesc;
        if ($curr{'desc'}) {
            if ($curr{'desc'} ne $newdesc) {
                $changes{'customrole'}{$rolename}{'desc'} = 1;
                $newsettings{$rolename}{'desc'} = $newdesc;
            }
        } elsif ($newdesc ne '') {
            $changes{'customrole'}{$rolename}{'desc'} = 1;
            $newsettings{$rolename}{'desc'} = $newdesc;
        }
        my $access = $env{'form.'.$prefix.'_access'};
        if (grep(/^\Q$access\E$/,@accesstypes)) {
            $helphash{'helpsettings'}{'adhoc'}{$rolename}{'access'} = $access;
            if ($access eq 'status') {
                my @statuses = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_status');
                if (scalar(@statuses) == 0) {
                    $helphash{'helpsettings'}{'adhoc'}{$rolename}{'access'} = 'none';
                } else {
                    my (@shownstatus,$numtypes);
                    $helphash{'helpsettings'}{'adhoc'}{$rolename}{$access} = [];
                    if (ref($types) eq 'ARRAY') {
                        $numtypes = scalar(@{$types});
                        foreach my $type (sort(@statuses)) {
                            if ($type eq 'default') {
                                push(@{$helphash{'helpsettings'}{'adhoc'}{$rolename}{$access}},$type);
                            } elsif (grep(/^\Q$type\E$/,@{$types})) {
                                push(@{$helphash{'helpsettings'}{'adhoc'}{$rolename}{$access}},$type);
                                push(@shownstatus,$usertypes->{$type});
                            }
                        }
                    }
                    if (grep(/^default$/,@statuses)) {
                        push(@shownstatus,$othertitle);
                    }
                    if (scalar(@shownstatus) == 1+$numtypes) {
                        $helphash{'helpsettings'}{'adhoc'}{$rolename}{'access'} = 'all';
                        delete($helphash{'helpsettings'}{'adhoc'}{$rolename}{'status'});
                    } else {
                        $newsettings{$rolename}{'status'} = join(' '.&mt('or').' ',@shownstatus);
                        if (ref($curr{'status'}) eq 'ARRAY') {
                            my @diffs = &Apache::loncommon::compare_arrays($helphash{'helpsettings'}{'adhoc'}{$rolename}{$access},$curr{$access});
                            if (@diffs) {
                                $changes{'customrole'}{$rolename}{$access} = 1;
                            }
                        } elsif (@{$helphash{'helpsettings'}{'adhoc'}{$rolename}{$access}}) {
                            $changes{'customrole'}{$rolename}{$access} = 1;
                        }
                    }
                }
            } elsif (($access eq 'inc') || ($access eq 'exc')) {
                my @personnel = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_staff_'.$access);
                my @newspecstaff;
                $helphash{'helpsettings'}{'adhoc'}{$rolename}{$access} = [];
                foreach my $person (sort(@personnel)) {
                    if ($domhelpdesk{$person}) {
                        push(@{$helphash{'helpsettings'}{'adhoc'}{$rolename}{$access}},$person);
                    }
                }
                if (ref($curr{$access}) eq 'ARRAY') {
                    my @diffs = &Apache::loncommon::compare_arrays($helphash{'helpsettings'}{'adhoc'}{$rolename}{$access},$curr{$access});
                    if (@diffs) {
                        $changes{'customrole'}{$rolename}{$access} = 1;
                    }
                } elsif (@{$helphash{'helpsettings'}{'adhoc'}{$rolename}{$access}}) {
                    $changes{'customrole'}{$rolename}{$access} = 1;
                }
                foreach my $person (@{$helphash{'helpsettings'}{'adhoc'}{$rolename}{$access}}) {
                    my ($uname,$udom) = split(/:/,$person);
                        push(@newspecstaff,&Apache::loncommon::aboutmewrapper(&Apache::loncommon::plainname($uname,$udom,'lastname'),$uname,$udom));
                }
                $newsettings{$rolename}{$access} = join(', ',sort(@newspecstaff));
            }
        } else {
            $helphash{'helpsettings'}{'adhoc'}{$rolename}{'access'}= 'all';
        }
        unless ($curr{'access'} eq $access) {
            $changes{'customrole'}{$rolename}{'access'} = 1;
            $newsettings{$rolename}{'access'} = $lt{$helphash{'helpsettings'}{'adhoc'}{$rolename}{'access'}};
        }
    }
    if (@allpos > 0) {
        my $idx = 0;
        foreach my $rolename (@allpos) {
            if ($rolename ne '') {
                $helphash{'helpsettings'}{'adhoc'}{$rolename}{'order'} = $idx;
                if (ref($current{'adhoc'}) eq 'HASH') {
                    if (ref($current{'adhoc'}{$rolename}) eq 'HASH') {
                        if ($current{'adhoc'}{$rolename}{'order'} ne $idx) {
                            $changes{'customrole'}{$rolename}{'order'} = 1;
                            $newsettings{$rolename}{'order'} = $idx+1;
                        }
                    }
                }
                $idx ++;
            }
        }
    }
    my $putresult;
    if (keys(%changes) > 0) {
        $putresult = &Apache::lonnet::put_dom('configuration',\%helphash,$dom);
        if ($putresult eq 'ok') {
            if (ref($helphash{'helpsettings'}) eq 'HASH') {
                $domdefaults{'submitbugs'} = $helphash{'helpsettings'}{'submitbugs'};
                if (ref($helphash{'helpsettings'}{'adhoc'}) eq 'HASH') {
                    $domdefaults{'adhocroles'} = $helphash{'helpsettings'}{'adhoc'};
                }
            }
            my $cachetime = 24*60*60;
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
        } else {
            $errors .= '<li><span class="LC_error">'.
                       &mt('An error occurred storing the settings: [_1]',
                           $putresult).'</span></li>';
        }
    }
    if ((keys(%changes) && ($putresult eq 'ok')) || (keys(%changedprivs))) {
        $resulttext = &mt('Changes made:').'<ul>';
        my (%shownprivs,@levelorder);
        @levelorder = ('c','d','s');
        if ((keys(%changes)) && ($putresult eq 'ok')) {
            foreach my $item (sort(keys(%changes))) {
                if ($item eq 'submitbugs') {
                    $resulttext .= '<li>'.&mt('Display link to: [_1] set to "'.$offon[$env{'form.'.$item}].'".',
                                              &Apache::loncommon::modal_link('http://bugs.loncapa.org',
                                              &mt('LON-CAPA bug tracker'),600,500)).'</li>';
                } elsif ($item eq 'customrole') {
                    if (ref($changes{'customrole'}) eq 'HASH') {
                        my @keyorder = ('order','desc','access','status','exc','inc');
                        my %keytext = &Apache::lonlocal::texthash(
                                                                   order  => 'Order',
                                                                   desc   => 'Role description',
                                                                   access => 'Role usage',
                                                                   status => 'Allowed institutional types',
                                                                   exc    => 'Allowed personnel',
                                                                   inc    => 'Disallowed personnel',
                        );
                        foreach my $role (sort(keys(%{$changes{'customrole'}}))) {
                            if (ref($changes{'customrole'}{$role}) eq 'HASH') {
                                if ($role eq $newrole) {
                                    $resulttext .= '<li>'.&mt('New custom role added: [_1]',
                                                              $role).'<ul>';
                                } else {
                                    $resulttext .= '<li>'.&mt('Existing custom role modified: [_1]',
                                                              $role).'<ul>';
                                }
                                foreach my $key (@keyorder) {
                                    if ($changes{'customrole'}{$role}{$key}) {
                                        $resulttext .= '<li>'.&mt("[_1] set to: [_2]",
                                                                  $keytext{$key},$newsettings{$role}{$key}).
                                                       '</li>';
                                    }
                                }
                                if (ref($changedprivs{$role}) eq 'HASH') {
                                    $shownprivs{$role} = 1;
                                    $resulttext .= '<li>'.&mt('Privileges set to :').'<ul>';
                                    foreach my $level (@levelorder) {
                                        foreach my $item (split(/\:/,$changedprivs{$role}{$level})) {
                                            next if ($item eq '');
                                            my ($priv) = split(/\&/,$item,2);
                                            if (&Apache::lonnet::plaintext($priv)) {
                                                $resulttext .= '<li>'.&Apache::lonnet::plaintext($priv);
                                                unless ($level eq 'c') {
                                                    $resulttext .= ' ('.$lt{$level}.')';
                                                }
                                                $resulttext .= '</li>';
                                            }
                                        }
                                    }
                                    $resulttext .= '</ul>';
                                }
                                $resulttext .= '</ul></li>';
                            }
                        }
                    }
                }
            }
        }
        if (keys(%changedprivs)) {
            foreach my $role (sort(keys(%changedprivs))) {
                unless ($shownprivs{$role}) {
                    $resulttext .= '<li>'.&mt('Existing custom role modified: [_1]',
                                              $role).'<ul>'.
                                   '<li>'.&mt('Privileges set to :').'<ul>';
                    foreach my $level (@levelorder) {
                        foreach my $item (split(/\:/,$changedprivs{$role}{$level})) {
                            next if ($item eq '');
                            my ($priv) = split(/\&/,$item,2);
                            if (&Apache::lonnet::plaintext($priv)) {
                                $resulttext .= '<li>'.&Apache::lonnet::plaintext($priv);
                                unless ($level eq 'c') {
                                    $resulttext .= ' ('.$lt{$level}.')';
                                }
                                $resulttext .= '</li>';
                            }
                        }
                    }
                    $resulttext .= '</ul></li></ul></li>';
                }
            }
        }
        $resulttext .= '</ul>';
    } else {
        $resulttext = &mt('No changes made to help settings');
    }
    if ($errors) {
        $resulttext .= '<br />'.&mt('The following errors occurred: ').'<ul>'.
                                    $errors.'</ul>';
    }
    return $resulttext;
}

sub modify_coursedefaults {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,$errors,%changes,%defaultshash);
    my %defaultchecked = (
                           'canuse_pdfforms' => 'off',
                           'uselcmath'       => 'on',
                           'usejsme'         => 'on',
                           'inline_chem'     => 'on',
                         );
    my @toggles = ('canuse_pdfforms','uselcmath','usejsme','inline_chem');
    my @numbers = ('anonsurvey_threshold','uploadquota_official','uploadquota_unofficial',
                   'uploadquota_community','uploadquota_textbook','uploadquota_placement',
                   'mysqltables_official','mysqltables_unofficial','mysqltables_community',
                   'mysqltables_textbook','mysqltables_placement');
    my @types = ('official','unofficial','community','textbook','placement');
    my %staticdefaults = (
                           anonsurvey_threshold => 10,
                           uploadquota          => 500,
                           postsubmit           => 60,
                           mysqltables          => 172800,
                         );
    my %texoptions = (
                        MathJax  => 'MathJax',
                        mimetex  => &mt('Convert to Images'),
                        tth      => &mt('TeX to HTML'),
                     );
    $defaultshash{'coursedefaults'} = {};

    if (ref($domconfig{'coursedefaults'}) ne 'HASH') {
        if ($domconfig{'coursedefaults'} eq '') {
            $domconfig{'coursedefaults'} = {};
        }
    }

    if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
        foreach my $item (@toggles) {
            if ($defaultchecked{$item} eq 'on') {
                if (($domconfig{'coursedefaults'}{$item} eq '') &&
                    ($env{'form.'.$item} eq '0')) {
                    $changes{$item} = 1;
                } elsif ($domconfig{'coursedefaults'}{$item} ne $env{'form.'.$item}) {
                    $changes{$item} = 1;
                }
            } elsif ($defaultchecked{$item} eq 'off') {
                if (($domconfig{'coursedefaults'}{$item} eq '') &&
                    ($env{'form.'.$item} eq '1')) {
                    $changes{$item} = 1;
                } elsif ($domconfig{'coursedefaults'}{$item} ne $env{'form.'.$item}) {
                    $changes{$item} = 1;
                }
            }
            $defaultshash{'coursedefaults'}{$item} = $env{'form.'.$item};
        }
        foreach my $item (@numbers) {
            my ($currdef,$newdef);
            $newdef = $env{'form.'.$item};
            if ($item eq 'anonsurvey_threshold') {
                $currdef = $domconfig{'coursedefaults'}{$item};
                $newdef =~ s/\D//g;
                if ($newdef eq '' || $newdef < 1) {
                    $newdef = 1;
                }
                $defaultshash{'coursedefaults'}{$item} = $newdef;
            } else {
                my ($setting,$type) = ($item =~ /^(uploadquota|mysqltables)_(\w+)$/);
                if (ref($domconfig{'coursedefaults'}{$setting}) eq 'HASH') {
                    $currdef = $domconfig{'coursedefaults'}{$setting}{$type};
                }
                $newdef =~ s/[^\w.\-]//g;
                $defaultshash{'coursedefaults'}{$setting}{$type} = $newdef;
            }
            if ($currdef ne $newdef) {
                if ($item eq 'anonsurvey_threshold') {
                    unless (($currdef eq '') && ($newdef == $staticdefaults{$item})) {
                        $changes{$item} = 1;
                    }
                } elsif ($item =~ /^(uploadquota|mysqltables)_/) {
                    my $setting = $1;
                    unless (($currdef eq '') && ($newdef == $staticdefaults{$setting})) {
                        $changes{$setting} = 1;
                    }
                }
            }
        }
        my $texengine;
        if ($env{'form.texengine'} =~ /^(MathJax|mimetex|tth)$/) {
            $texengine = $env{'form.texengine'};
            my $currdef = $domconfig{'coursedefaults'}{'texengine'};
            if ($currdef eq '') {
                unless ($texengine eq $Apache::lonnet::deftex) {
                    $changes{'texengine'} = 1;
                }
            } elsif ($currdef ne $texengine) {
                $changes{'texengine'} = 1;
            }
        }
        if ($texengine ne '') {
            $defaultshash{'coursedefaults'}{'texengine'} = $texengine;
        }
        my $currclone = $domconfig{'coursedefaults'}{'canclone'};
        my @currclonecode;
        if (ref($currclone) eq 'HASH') {
            if (ref($currclone->{'instcode'}) eq 'ARRAY') {
                @currclonecode = @{$currclone->{'instcode'}};
            }
        }
        my $newclone;
        if ($env{'form.canclone'} =~ /^(none|domain|instcode)$/) {
            $newclone = $env{'form.canclone'};
        }
        if ($newclone eq 'instcode') {
            my @newcodes = &Apache::loncommon::get_env_multiple('form.clonecode');
            my (%codedefaults,@code_order,@clonecode);
            &Apache::lonnet::auto_instcode_defaults($dom,\%codedefaults,
                                                    \@code_order);
            foreach my $item (@code_order) {
                if (grep(/^\Q$item\E$/,@newcodes)) {
                    push(@clonecode,$item);
                }
            }
            if (@clonecode) {
                $defaultshash{'coursedefaults'}{'canclone'} = { $newclone => \@clonecode };
                my @diffs = &Apache::loncommon::compare_arrays(\@currclonecode,\@clonecode);
                if (@diffs) {
                    $changes{'canclone'} = 1;
                }
            } else {
                $newclone eq '';
            }
        } elsif ($newclone ne '') {
            $defaultshash{'coursedefaults'}{'canclone'} = $newclone;
        }
        if ($newclone ne $currclone) {
            $changes{'canclone'} = 1;
        }
        my %credits;
        foreach my $type (@types) {
            unless ($type eq 'community') {
                $credits{$type} = $env{'form.'.$type.'_credits'};
                $credits{$type} =~ s/[^\d.]+//g;
            }
        }
        if ((ref($domconfig{'coursedefaults'}{'coursecredits'}) ne 'HASH') &&
            ($env{'form.coursecredits'} eq '1')) {
            $changes{'coursecredits'} = 1;
            foreach my $type (keys(%credits)) {
                $defaultshash{'coursedefaults'}{'coursecredits'}{$type} = $credits{$type};
            }
        } else {
            if ($env{'form.coursecredits'} eq '1') {
                foreach my $type (@types) {
                    unless ($type eq 'community') {
                        if ($domconfig{'coursedefaults'}{'coursecredits'}{$type} ne $credits{$type}) {
                            $changes{'coursecredits'} = 1;
                        }
                        $defaultshash{'coursedefaults'}{'coursecredits'}{$type} = $credits{$type};
                    }
                }
            } elsif (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
                foreach my $type (@types) {
                    unless ($type eq 'community') {
                        if ($domconfig{'coursedefaults'}{'coursecredits'}{$type}) {
                            $changes{'coursecredits'} = 1;
                            last;
                        }
                    }
                }
            }
        }
        if ($env{'form.postsubmit'} eq '1') {
            $defaultshash{'coursedefaults'}{'postsubmit'}{'client'} = 'on';
            my %currtimeout;
            if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
                if ($domconfig{'coursedefaults'}{'postsubmit'}{'client'} eq 'off') {
                    $changes{'postsubmit'} = 1;
                }
                if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
                    %currtimeout = %{$domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}};
                }
            } else {
                $changes{'postsubmit'} = 1;
            }
            foreach my $type (@types) {
                my $timeout = $env{'form.'.$type.'_timeout'};
                $timeout =~ s/\D//g;
                if ($timeout == $staticdefaults{'postsubmit'}) {
                    $timeout = '';
                } elsif (($timeout eq '') || ($timeout =~ /^0+$/)) {
                    $timeout = '0';
                }
                unless ($timeout eq '') {
                    $defaultshash{'coursedefaults'}{'postsubmit'}{'timeout'}{$type} = $timeout;
                }
                if (exists($currtimeout{$type})) {
                    if ($timeout ne $currtimeout{$type}) {
                        $changes{'postsubmit'} = 1;
                    }
                } elsif ($timeout ne '') {
                    $changes{'postsubmit'} = 1;
                }
            }
        } else {
            $defaultshash{'coursedefaults'}{'postsubmit'}{'client'} = 'off';
            if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
                if ($domconfig{'coursedefaults'}{'postsubmit'}{'client'} eq 'on') {
                    $changes{'postsubmit'} = 1;
                }
            } else {
                $changes{'postsubmit'} = 1;
            }
        }
    }
    my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
            if (($changes{'canuse_pdfforms'}) || ($changes{'uploadquota'}) || ($changes{'postsubmit'}) ||
                ($changes{'coursecredits'}) || ($changes{'uselcmath'}) || ($changes{'usejsme'}) ||
                ($changes{'canclone'}) || ($changes{'mysqltables'}) || ($changes{'texengine'}) ||
                ($changes{'inline_chem'})) {
                foreach my $item ('canuse_pdfforms','uselcmath','usejsme','inline_chem','texengine') {
                    if ($changes{$item}) {
                        $domdefaults{$item}=$defaultshash{'coursedefaults'}{$item};
                    }
                }
                if ($changes{'coursecredits'}) {
                    if (ref($defaultshash{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
                        foreach my $type (keys(%{$defaultshash{'coursedefaults'}{'coursecredits'}})) {
                            $domdefaults{$type.'credits'} =
                                $defaultshash{'coursedefaults'}{'coursecredits'}{$type};
                        }
                    }
                }
                if ($changes{'postsubmit'}) {
                    if (ref($defaultshash{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
                        $domdefaults{'postsubmit'} = $defaultshash{'coursedefaults'}{'postsubmit'}{'client'};
                        if (ref($defaultshash{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
                            foreach my $type (keys(%{$defaultshash{'coursedefaults'}{'postsubmit'}{'timeout'}})) {
                                $domdefaults{$type.'postsubtimeout'} =
                                    $defaultshash{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
                            }
                        }
                    }
                }
                if ($changes{'uploadquota'}) {
                    if (ref($defaultshash{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
                        foreach my $type (@types) {
                            $domdefaults{$type.'quota'}=$defaultshash{'coursedefaults'}{'uploadquota'}{$type};
                        }
                    }
                }
                if ($changes{'canclone'}) {
                    if (ref($defaultshash{'coursedefaults'}{'canclone'}) eq 'HASH') {
                        if (ref($defaultshash{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
                            my @clonecodes = @{$defaultshash{'coursedefaults'}{'canclone'}{'instcode'}};
                            if (@clonecodes) {
                                $domdefaults{'canclone'} = join('+',@clonecodes);
                            }
                        }
                    } else {
                        $domdefaults{'canclone'}=$defaultshash{'coursedefaults'}{'canclone'};
                    }
                }
                my $cachetime = 24*60*60;
                &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domdefaults'} = 1;
                }
            }
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $item (sort(keys(%changes))) {
                if ($item eq 'canuse_pdfforms') {
                    if ($env{'form.'.$item} eq '1') {
                        $resulttext .= '<li>'.&mt("Course/Community users can create/upload PDF forms set to 'on'").'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Course/Community users can create/upload PDF forms set to "off"').'</li>';
                    }
                } elsif ($item eq 'uselcmath') {
                    if ($env{'form.'.$item} eq '1') {
                        $resulttext .= '<li>'.&mt('Math preview uses LON-CAPA previewer (javascript), if supported by browser.').'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Math preview uses DragMath (Java), if supported by client OS.').'</li>';
                    }
                } elsif ($item eq 'usejsme') {
                    if ($env{'form.'.$item} eq '1') {
                        $resulttext .= '<li>'.&mt('Molecule editor uses JSME (HTML5), if supported by browser.').'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Molecule editor uses JME (Java), if supported by client OS.').'</li>';
                    }
                } elsif ($item eq 'inline_chem') {
                    if ($env{'form.'.$item} eq '1') {
                        $resulttext .= '<li>'.&mt('Chemical Reaction Response uses inline previewer').'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Chemical Reaction Response uses pop-up previewer').'</li>';
                    }
                } elsif ($item eq 'texengine') {
                    if ($defaultshash{'coursedefaults'}{'texengine'} ne '') {
                        $resulttext .= '<li>'.&mt('Default method to display mathematics set to: "[_1]"',
                                                  $texoptions{$defaultshash{'coursedefaults'}{'texengine'}}).'</li>';
                    }
                } elsif ($item eq 'anonsurvey_threshold') {
                    $resulttext .= '<li>'.&mt('Responder count required for display of anonymous survey submissions set to [_1].',$defaultshash{'coursedefaults'}{'anonsurvey_threshold'}).'</li>';
                } elsif ($item eq 'uploadquota') {
                    if (ref($defaultshash{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
                        $resulttext .= '<li>'.&mt('Default quota for content uploaded to a course/community via Course Editor set as follows:').'<ul>'.
                                       '<li>'.&mt('Official courses: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'official'}.'</b>').'</li>'.
                                       '<li>'.&mt('Unofficial courses: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'unofficial'}.'</b>').'</li>'.
                                       '<li>'.&mt('Textbook courses: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'textbook'}.'</b>').'</li>'.
                                       '<li>'.&mt('Placement tests: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'placement'}.'</b>').'</li>'. 
                                       '<li>'.&mt('Communities: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'community'}.'</b>').'</li>'.
                                       '</ul>'.
                                       '</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Default quota for content uploaded via Course Editor remains default: [_1] MB',$staticdefaults{'uploadquota'}).'</li>';
                    }
                } elsif ($item eq 'mysqltables') {
                    if (ref($defaultshash{'coursedefaults'}{'mysqltables'}) eq 'HASH') {
                        $resulttext .= '<li>'.&mt('Lifetime of "Temporary" MySQL tables (student performance data) on homeserver').'<ul>'.
                                       '<li>'.&mt('Official courses: [_1] s','<b>'.$defaultshash{'coursedefaults'}{'mysqltables'}{'official'}.'</b>').'</li>'.
                                       '<li>'.&mt('Unofficial courses: [_1] s','<b>'.$defaultshash{'coursedefaults'}{'mysqltables'}{'unofficial'}.'</b>').'</li>'.
                                       '<li>'.&mt('Textbook courses: [_1] s','<b>'.$defaultshash{'coursedefaults'}{'mysqltables'}{'textbook'}.'</b>').'</li>'.
                                       '<li>'.&mt('Placement tests: [_1] s','<b>'.$defaultshash{'coursedefaults'}{'mysqltables'}{'placement'}.'</b>').'</li>'.
                                       '<li>'.&mt('Communities: [_1] s','<b>'.$defaultshash{'coursedefaults'}{'mysqltables'}{'community'}.'</b>').'</li>'.
                                       '</ul>'.
                                       '</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('Lifetime of "Temporary" MySQL tables (student performance data) on homeserver remains default: [_1] s',$staticdefaults{'uploadquota'}).'</li>';
                    }
                } elsif ($item eq 'postsubmit') {
                    if ($domdefaults{'postsubmit'} eq 'off') {
                        $resulttext .= '<li>'.&mt('Submit button(s) remain enabled on page after student makes submission.');
                    } else {
                        $resulttext .= '<li>'.&mt('Submit button(s) disabled on page after student makes submission').'; ';
                        if (ref($defaultshash{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
                            $resulttext .= &mt('durations:').'<ul>';
                            foreach my $type (@types) {
                                $resulttext .= '<li>';
                                my $timeout;
                                if (ref($defaultshash{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
                                    $timeout = $defaultshash{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
                                }
                                my $display;
                                if ($timeout eq '0') {
                                    $display = &mt('unlimited');
                                } elsif ($timeout eq '') {
                                    $display = &mt('[quant,_1,second] (default)',$staticdefaults{'postsubmit'});
                                } else {
                                    $display = &mt('[quant,_1,second]',$timeout);
                                }
                                if ($type eq 'community') {
                                    $resulttext .= &mt('Communities');
                                } elsif ($type eq 'official') {
                                    $resulttext .= &mt('Official courses');
                                } elsif ($type eq 'unofficial') {
                                    $resulttext .= &mt('Unofficial courses');
                                } elsif ($type eq 'textbook') {
                                    $resulttext .= &mt('Textbook courses');
                                } elsif ($type eq 'placement') {
                                    $resulttext .= &mt('Placement tests');
                                }
                                $resulttext .= ' -- '.$display.'</li>';
                            }
                            $resulttext .= '</ul>';
                        }
                        $resulttext .= '</li>';
                    }
                } elsif ($item eq 'coursecredits') {
                    if (ref($defaultshash{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
                        if (($domdefaults{'officialcredits'} eq '') &&
                            ($domdefaults{'unofficialcredits'} eq '') &&
                            ($domdefaults{'textbookcredits'} eq '')) {
                            $resulttext .= '<li>'.&mt('Student credits not in use for courses in this domain').'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt('Student credits can be set per course by a Domain Coordinator, with the following defaults applying:').'<ul>'.
                                           '<li>'.&mt('Official courses: [_1]',$defaultshash{'coursedefaults'}{'coursecredits'}{'official'}).'</li>'.
                                           '<li>'.&mt('Unofficial courses: [_1]',$defaultshash{'coursedefaults'}{'coursecredits'}{'unofficial'}).'</li>'.
                                           '<li>'.&mt('Textbook courses: [_1]',$defaultshash{'coursedefaults'}{'coursecredits'}{'textbook'}).'</li>'.
                                           '</ul>'.
                                           '</li>';
                        }
                    } else {
                        $resulttext .= '<li>'.&mt('Student credits not in use for courses in this domain').'</li>';
                    }
                } elsif ($item eq 'canclone') {
                    if (ref($defaultshash{'coursedefaults'}{'canclone'}) eq 'HASH') {
                        if (ref($defaultshash{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
                            my $clonecodes = join(' '.&mt('and').' ',@{$defaultshash{'coursedefaults'}{'canclone'}{'instcode'}});
                            $resulttext .= '<li>'.&mt('By default, official courses can be cloned from existing courses with the same: [_1]','<b>'.$clonecodes.'</b>').'</li>';
                        }
                    } elsif ($defaultshash{'coursedefaults'}{'canclone'} eq 'domain') {
                        $resulttext .= '<li>'.&mt('By default, a course requester can clone any course from his/her domain.').'</li>';
                    } else {
                        $resulttext .= '<li>'.&mt('By default, only course owner and coordinators may clone a course.').'</li>';
                    }
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to course defaults');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_selfenrollment {
    my ($dom,$lastactref,%domconfig) = @_;
    my ($resulttext,$errors,%changes,%selfenrollhash,%ordered);
    my @types = ('official','unofficial','community','textbook','placement');
    my %titles = &tool_titles();
    my %descs = &Apache::lonuserutils::selfenroll_default_descs();
    ($ordered{'admin'},my $titlesref) = &Apache::lonuserutils::get_selfenroll_titles();
    $ordered{'default'} = ['types','registered','approval','limit'];

    my (%roles,%shown,%toplevel);
    $roles{'0'} = &Apache::lonnet::plaintext('dc');

    if (ref($domconfig{'selfenrollment'}) ne 'HASH') {
        if ($domconfig{'selfenrollment'} eq '') {
            $domconfig{'selfenrollment'} = {};
        }
    }
    %toplevel = (
                  admin      => 'Configuration Rights',
                  default    => 'Default settings',
                  validation => 'Validation of self-enrollment requests',
                );
    my ($itemsref,$namesref,$fieldsref) = &Apache::lonuserutils::selfenroll_validation_types();

    if (ref($ordered{'admin'}) eq 'ARRAY') {
        foreach my $item (@{$ordered{'admin'}}) {
            foreach my $type (@types) {
                if ($env{'form.selfenrolladmin_'.$item.'_'.$type}) {
                    $selfenrollhash{'admin'}{$type}{$item} = 1;
                } else {
                    $selfenrollhash{'admin'}{$type}{$item} = 0;
                }
                if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
                    if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
                        if ($selfenrollhash{'admin'}{$type}{$item} ne
                            $domconfig{'selfenrollment'}{'admin'}{$type}{$item})  {
                            push(@{$changes{'admin'}{$type}},$item);
                        }
                    } else {
                        if (!$selfenrollhash{'admin'}{$type}{$item}) {
                            push(@{$changes{'admin'}{$type}},$item);
                        }
                    }
                } elsif (!$selfenrollhash{'admin'}{$type}{$item}) {
                    push(@{$changes{'admin'}{$type}},$item);
                }
            }
        }
    }

    foreach my $item (@{$ordered{'default'}}) {
        foreach my $type (@types) {
            my $value = $env{'form.selfenrolldefault_'.$item.'_'.$type};
            if ($item eq 'types') {
                unless (($value eq 'all') || ($value eq 'dom')) {
                    $value = '';
                }
            } elsif ($item eq 'registered') {
                unless ($value eq '1') {
                    $value = 0;
                }
            } elsif ($item eq 'approval') {
                unless ($value =~ /^[012]$/) {
                    $value = 0;
                }
            } else {
                unless (($value eq 'allstudents') || ($value eq 'selfenrolled')) {
                    $value = 'none';
                }
            }
            $selfenrollhash{'default'}{$type}{$item} = $value;
            if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
                if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
                    if ($selfenrollhash{'default'}{$type}{$item} ne
                         $domconfig{'selfenrollment'}{'default'}{$type}{$item})  {
                         push(@{$changes{'default'}{$type}},$item);
                    }
                } else {
                    push(@{$changes{'default'}{$type}},$item);
                }
            } else {
                push(@{$changes{'default'}{$type}},$item);
            }
            if ($item eq 'limit') {
                if (($value eq 'allstudents') || ($value eq 'selfenrolled')) {
                    $env{'form.selfenrolldefault_cap_'.$type} =~ s/\D//g;
                    if ($env{'form.selfenrolldefault_cap_'.$type} ne '') {
                        $selfenrollhash{'default'}{$type}{'cap'} = $env{'form.selfenrolldefault_cap_'.$type};
                    }
                } else {
                    $selfenrollhash{'default'}{$type}{'cap'} = '';
                }
                if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
                    if ($selfenrollhash{'default'}{$type}{'cap'} ne
                         $domconfig{'selfenrollment'}{'admin'}{$type}{'cap'})  {
                         push(@{$changes{'default'}{$type}},'cap');
                    }
                } elsif ($selfenrollhash{'default'}{$type}{'cap'} ne '') {
                    push(@{$changes{'default'}{$type}},'cap');
                }
            }
        }
    }

    foreach my $item (@{$itemsref}) {
        if ($item eq 'fields') {
            my @changed;
            @{$selfenrollhash{'validation'}{$item}} = &Apache::loncommon::get_env_multiple('form.selfenroll_validation_'.$item);
            if (@{$selfenrollhash{'validation'}{$item}} > 0) {
                @{$selfenrollhash{'validation'}{$item}} = sort(@{$selfenrollhash{'validation'}{$item}});
            }
            if (ref($domconfig{'selfenrollment'}{'validation'}) eq 'HASH') {
                if (ref($domconfig{'selfenrollment'}{'validation'}{$item}) eq 'ARRAY') {
                    @changed = &Apache::loncommon::compare_arrays($selfenrollhash{'validation'}{$item},
                                                                  $domconfig{'selfenrollment'}{'validation'}{$item});
                } else {
                    @changed = @{$selfenrollhash{'validation'}{$item}};
                }
            } else {
                @changed = @{$selfenrollhash{'validation'}{$item}};
            }
            if (@changed) {
                if ($selfenrollhash{'validation'}{$item}) { 
                    $changes{'validation'}{$item} = join(', ',@{$selfenrollhash{'validation'}{$item}});
                } else {
                    $changes{'validation'}{$item} = &mt('None');
                }
            }
        } else {
            $selfenrollhash{'validation'}{$item} = $env{'form.selfenroll_validation_'.$item};
            if ($item eq 'markup') {
               if ($env{'form.selfenroll_validation_'.$item}) {
                   $env{'form.selfenroll_validation_'.$item} =~ s/[\n\r\f]+/\s/gs;
               }
            }
            if (ref($domconfig{'selfenrollment'}{'validation'}) eq 'HASH') {
                if ($domconfig{'selfenrollment'}{'validation'}{$item} ne $selfenrollhash{'validation'}{$item}) {
                    $changes{'validation'}{$item} = $selfenrollhash{'validation'}{$item};
                }
            }
        }
    }

    my $putresult = &Apache::lonnet::put_dom('configuration',{'selfenrollment' => \%selfenrollhash},
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $key ('admin','default','validation') {
                if (ref($changes{$key}) eq 'HASH') {
                    $resulttext .= '<li>'.$toplevel{$key}.'<ul>';
                    if ($key eq 'validation') {
                        foreach my $item (@{$itemsref}) {
                            if (exists($changes{$key}{$item})) {
                                if ($item eq 'markup') {
                                    $resulttext .= '<li>'.&mt('[_1] set to: [_2]',$namesref->{$item},
                                                              '<br /><pre>'.$changes{$key}{$item}.'</pre>').'</li>';
                                } else {  
                                    $resulttext .= '<li>'.&mt('[_1] set to: [_2]',$namesref->{$item},
                                                              '<b>'.$changes{$key}{$item}.'</b>').'</li>';
                                }
                            }
                        }
                    } else {
                        foreach my $type (@types) {
                            if ($type eq 'community') {
                                $roles{'1'} = &mt('Community personnel');
                            } else {
                                $roles{'1'} = &mt('Course personnel');
                            }
                            if (ref($changes{$key}{$type}) eq 'ARRAY') {
                                if (ref($selfenrollhash{$key}{$type}) eq 'HASH') {
                                    if ($key eq 'admin') {
                                        my @mgrdc = ();
                                        if (ref($ordered{$key}) eq 'ARRAY') {
                                            foreach my $item (@{$ordered{'admin'}}) {
                                                if (ref($selfenrollhash{$key}{$type}) eq 'HASH') { 
                                                    if ($selfenrollhash{$key}{$type}{$item} eq '0') {
                                                        push(@mgrdc,$item);
                                                    }
                                                }
                                            }
                                            if (@mgrdc) {
                                                $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
                                            } else {
                                                delete($domdefaults{$type.'selfenrolladmdc'});
                                            }
                                        }
                                    } else {
                                        if (ref($ordered{$key}) eq 'ARRAY') {
                                            foreach my $item (@{$ordered{$key}}) {
                                                if (grep(/^\Q$item\E$/,@{$changes{$key}{$type}})) {
                                                    $domdefaults{$type.'selfenroll'.$item} =
                                                        $selfenrollhash{$key}{$type}{$item};
                                                }
                                            }
                                        }
                                    }
                                }
                                $resulttext .= '<li>'.$titles{$type}.'<ul>';
                                foreach my $item (@{$ordered{$key}}) {
                                    if (grep(/^\Q$item\E$/,@{$changes{$key}{$type}})) {
                                        $resulttext .= '<li>';
                                        if ($key eq 'admin') {
                                            $resulttext .= &mt('[_1] -- management by: [_2]',$titlesref->{$item},
                                                               '<b>'.$roles{$selfenrollhash{'admin'}{$type}{$item}}.'</b>');
                                        } else {
                                            $resulttext .= &mt('[_1] set to: [_2]',$titlesref->{$item},
                                                               '<b>'.$descs{$item}{$selfenrollhash{'default'}{$type}{$item}}.'</b>');
                                        }
                                        $resulttext .= '</li>';
                                    }
                                }
                                $resulttext .= '</ul></li>';
                            }
                        }
                        $resulttext .= '</ul></li>'; 
                    }
                }
            }
            if ((exists($changes{'admin'})) || (exists($changes{'default'}))) {
                my $cachetime = 24*60*60;
                &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domdefaults'} = 1;
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to self-enrollment settings');
        }
    } else {
        $resulttext = '<span class="LC_error">'.
            &mt('An error occurred: [_1]',$putresult).'</span>';
    }
    return $resulttext;
}

sub modify_wafproxy {
    my ($dom,$action,$lastactref,%domconfig) = @_;
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my (%othercontrol,%canset,%values,%curralias,%currsaml,%currvalue,@warnings,
        %wafproxy,%changes,%expirecache,%expiresaml);
    foreach my $server (sort(keys(%servers))) {
        my $serverhome = &Apache::lonnet::get_server_homeID($servers{$server});
        if ($serverhome eq $server) {
            my $serverdom = &Apache::lonnet::host_domain($server);
            if ($serverdom eq $dom) {
                $canset{$server} = 1;
            }
        }
    }
    if (ref($domconfig{'wafproxy'}) eq 'HASH') {
        %{$values{$dom}} = ();
        if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
            %curralias = %{$domconfig{'wafproxy'}{'alias'}};
        }
        if (ref($domconfig{'wafproxy'}{'saml'}) eq 'HASH') {
            %currsaml = %{$domconfig{'wafproxy'}{'saml'}};
        }
        foreach my $item ('remoteip','ipheader','trusted','vpnint','vpnext','sslopt') {
            $currvalue{$item} = $domconfig{'wafproxy'}{$item};
        }
    }
    my $output;
    if (keys(%canset)) {
        %{$wafproxy{'alias'}} = ();
        %{$wafproxy{'saml'}} = ();
        foreach my $key (sort(keys(%canset))) {
            if ($env{'form.wafproxy_'.$dom}) {
                $wafproxy{'alias'}{$key} = $env{'form.wafproxy_alias_'.$key};
                $wafproxy{'alias'}{$key} =~ s/^\s+|\s+$//g;
                if ($wafproxy{'alias'}{$key} ne $curralias{$key}) {
                    $changes{'alias'} = 1;
                }
                if ($env{'form.wafproxy_alias_saml_'.$key}) {
                    $wafproxy{'saml'}{$key} = 1;
                }
                if ($wafproxy{'saml'}{$key} ne $currsaml{$key}) {
                    $changes{'saml'} = 1;
                }
            } else {
                $wafproxy{'alias'}{$key} = '';
                $wafproxy{'saml'}{$key} = '';
                if ($curralias{$key}) {
                    $changes{'alias'} = 1;
                }
                if ($currsaml{$key}) {
                    $changes{'saml'} = 1;
                }
            }
            if ($wafproxy{'alias'}{$key} eq '') {
                if ($curralias{$key}) {
                    $expirecache{$key} = 1;
                }
                delete($wafproxy{'alias'}{$key});
            }
            if ($wafproxy{'saml'}{$key} eq '') {
                if ($currsaml{$key}) {
                    $expiresaml{$key} = 1;
                }
                delete($wafproxy{'saml'}{$key});
            }
        }
        unless (keys(%{$wafproxy{'alias'}})) {
            delete($wafproxy{'alias'});
        }
        unless (keys(%{$wafproxy{'saml'}})) {
            delete($wafproxy{'saml'});
        }
        # Localization for values in %warn occurs in &mt() calls separately.
        my %warn = (
                     trusted => 'trusted IP range(s)',
                     vpnint => 'internal IP range(s) for VPN sessions(s)',
                     vpnext => 'IP range(s) for backend WAF connections',
                   );
        foreach my $item ('remoteip','ipheader','trusted','vpnint','vpnext','sslopt') {
            my $possible = $env{'form.wafproxy_'.$item};
            $possible =~ s/^\s+|\s+$//g;
            if ($possible ne '') {
                if ($item eq 'remoteip') {
                    if ($possible =~ /^[mhn]$/) {
                        $wafproxy{$item} = $possible;
                    }
                } elsif ($item eq 'ipheader') {
                    if ($wafproxy{'remoteip'} eq 'h') {
                        $wafproxy{$item} = $possible;
                    }
                } elsif ($item eq 'sslopt') {
                    if ($possible =~ /^0|1$/) {
                        $wafproxy{$item} = $possible;
                    }
                } else {
                    my (@ok,$count);
                    if (($item eq 'vpnint') || ($item eq 'vpnext')) {
                        unless ($env{'form.wafproxy_vpnaccess'}) {
                            $possible = '';
                        }
                    } elsif ($item eq 'trusted') {
                        unless ($wafproxy{'remoteip'} eq 'h') {
                            $possible = '';
                        }
                    }
                    unless ($possible eq '') {
                        $possible =~ s/[\r\n]+/\s/g;
                        $possible =~ s/\s*-\s*/-/g;
                        $possible =~ s/\s+/,/g;
                        $possible =~ s/,+/,/g;
                    }
                    $count = 0;
                    if ($possible ne '') {
                        foreach my $poss (split(/\,/,$possible)) {
                            $count ++;
                            $poss = &validate_ip_pattern($poss);
                            if ($poss ne '') {
                                push(@ok,$poss);
                            }
                        }
                        my $diff = $count - scalar(@ok);
                        if ($diff) {
                            push(@warnings,'<li>'.
                                 &mt('[quant,_1,IP] invalid and excluded from saved value for [_2]',
                                     $diff,$warn{$item}).
                                 '</li>');
                        }
                        if (@ok) {
                            my @cidr_list;
                            foreach my $item (@ok) {
                                @cidr_list = &Net::CIDR::cidradd($item,@cidr_list);
                            }
                            $wafproxy{$item} = join(',',@cidr_list);
                        }
                    }
                }
                if ($wafproxy{$item} ne $currvalue{$item}) {
                    $changes{$item} = 1;
                }
            } elsif ($currvalue{$item}) {
                $changes{$item} = 1;
            } 
        }
    } else {
        if (keys(%curralias)) {
            $changes{'alias'} = 1;
        }
        if (keys(%currsaml)) {
            $changes{'saml'} = 1;
        } 
        if (keys(%currvalue)) {
            foreach my $key (keys(%currvalue)) {
                $changes{$key} = 1;
            }
        }
    }
    if (keys(%changes)) {
        my %defaultshash = (
                              wafproxy => \%wafproxy,
                           ); 
        my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                                 $dom);
        if ($putresult eq 'ok') {
            my $cachetime = 24*60*60;
            my (%domdefaults,$updatedomdefs);
            foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
                if ($changes{$item}) {
                    unless ($updatedomdefs) {
                        %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
                        $updatedomdefs = 1;
                    }
                    if ($wafproxy{$item}) {
                        $domdefaults{'waf_'.$item} = $wafproxy{$item};
                    } elsif (exists($domdefaults{'waf_'.$item})) {
                        delete($domdefaults{'waf_'.$item});
                    } 
                }
            }
            if ($updatedomdefs) {
                &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'domdefaults'} = 1;
                }
            }
            if ((exists($wafproxy{'alias'})) || (keys(%expirecache))) {
                my %updates = %expirecache;
                foreach my $key (keys(%expirecache)) {
                    &Apache::lonnet::devalidate_cache_new('proxyalias',$key);
                }
                if (ref($wafproxy{'alias'}) eq 'HASH') {
                    my $cachetime = 24*60*60;
                    foreach my $key (keys(%{$wafproxy{'alias'}})) {
                        $updates{$key} = 1;
                        &Apache::lonnet::do_cache_new('proxyalias',$key,$wafproxy{'alias'}{$key},
                                                      $cachetime);
                    }
                }
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'proxyalias'} = \%updates;
                }
            }
            if ((exists($wafproxy{'saml'})) || (keys(%expiresaml))) {
                my %samlupdates = %expiresaml;
                foreach my $key (keys(%expiresaml)) {
                    &Apache::lonnet::devalidate_cache_new('proxysaml',$key);
                }
                if (ref($wafproxy{'saml'}) eq 'HASH') {
                    my $cachetime = 24*60*60;
                    foreach my $key (keys(%{$wafproxy{'saml'}})) {
                        $samlupdates{$key} = 1;
                        &Apache::lonnet::do_cache_new('proxysaml',$key,$wafproxy{'saml'}{$key},
                                                      $cachetime);
                    }
                }
                if (ref($lastactref) eq 'HASH') {
                    $lastactref->{'proxysaml'} = \%samlupdates;
                }
            }
            $output = &mt('Changes were made to Web Application Firewall/Reverse Proxy').'<ul>';
            foreach my $item ('alias','saml','remoteip','ipheader','trusted','vpnint','vpnext','sslopt') {
                if ($changes{$item}) {
                    if ($item eq 'alias') {
                        my $numaliased = 0;
                        if (ref($wafproxy{'alias'}) eq 'HASH') {
                            my $shown;
                            if (keys(%{$wafproxy{'alias'}})) {
                                foreach my $server (sort(keys(%{$wafproxy{'alias'}}))) {
                                    $shown .= '<li>'.&mt('[_1] aliased by [_2]',
                                                         &Apache::lonnet::hostname($server),
                                                         $wafproxy{'alias'}{$server}).'</li>';
                                    $numaliased ++;
                                }
                                if ($numaliased) {
                                    $output .= '<li>'.&mt('Aliases for hostnames set to: [_1]',
                                                          '<ul>'.$shown.'</ul>').'</li>';
                                }
                            }
                        }
                        unless ($numaliased) {
                            $output .= '<li>'.&mt('Aliases deleted for hostnames').'</li>';
                        }
                    } elsif ($item eq 'saml') {
                        my $shown; 
                        if (ref($wafproxy{'saml'}) eq 'HASH') {
                            if (keys(%{$wafproxy{'saml'}})) {
                                $shown = join(', ',sort(keys(%{$wafproxy{'saml'}})));
                            }
                        }
                        if ($shown) {
                            $output .= '<li>'.&mt('Alias used by SSO Auth for: [_1]',
                                                  $shown).'</li>';
                        } else {
                            $output .= '<li>'.&mt('No alias used for SSO Auth').'</li>';
                        }
                    } else {
                        if ($item eq 'remoteip') {
                            my %ip_methods = &remoteip_methods();
                            if ($wafproxy{$item} =~ /^[mh]$/) {
                                $output .= '<li>'.&mt("Method for determining user's IP set to: [_1]",
                                                      $ip_methods{$wafproxy{$item}}).'</li>';
                            } else {
                                if (($env{'form.wafproxy_'.$dom}) && (ref($wafproxy{'alias'}) eq 'HASH')) {
                                    $output .= '<li>'.&mt("No method in use to get user's real IP (will report IP used by WAF).").
                                               '</li>';
                                } else {
                                    $output .= '<li>'.&mt('WAF/Reverse Proxy not in use').'</li>';
                                }
                            }
                        } elsif ($item eq 'ipheader') {
                            if ($wafproxy{$item}) {
                                $output .= '<li>'.&mt('Request header with remote IP set to: [_1]',
                                                      $wafproxy{$item}).'</li>';
                            } else {
                                $output .= '<li>'.&mt('Request header with remote IP deleted').'</li>';
                            }
                        } elsif ($item eq 'trusted') {
                            if ($wafproxy{$item}) {
                                $output .= '<li>'.&mt('Trusted IP range(s) set to: [_1]',
                                                      $wafproxy{$item}).'</li>';
                            } else {
                                $output .= '<li>'.&mt('Trusted IP range(s) deleted').'</li>';
                            }
                        } elsif ($item eq 'vpnint') {
                            if ($wafproxy{$item}) {
                                $output .= '<li>'.&mt('Internal IP Range(s) for VPN sessions set to: [_1]',
                                                       $wafproxy{$item}).'</li>';
                            } else {
                                $output .= '<li>'.&mt('Internal IP Range(s) for VPN sessions deleted').'</li>';
                            }
                        } elsif ($item eq 'vpnext') {
                            if ($wafproxy{$item}) {
                                $output .= '<li>'.&mt('IP Range(s) for backend WAF connections set to: [_1]',
                                                       $wafproxy{$item}).'</li>';
                            } else {
                                $output .= '<li>'.&mt('IP Range(s) for backend WAF connections deleted').'</li>';
                            }
                        } elsif ($item eq 'sslopt') {
                            if ($wafproxy{$item}) {
                                $output .= '<li>'.&mt('WAF/Reverse Proxy expected to forward requests to https on LON-CAPA node, regardless of original protocol in web browser (http or https).').'</li>';
                            } else {
                                $output .= '<li>'.&mt('WAF/Reverse Proxy expected to preserve original protocol in web browser (either http or https) when forwarding to LON-CAPA node.').'</li>';
                            }
                        }
                    }
                }
            }
        } else {
            $output = '<span class="LC_error">'.
                      &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } elsif (keys(%canset)) {
        $output = &mt('No changes made to Web Application Firewall/Reverse Proxy settings');
    }
    if (@warnings) {
        $output .= '<br />'.&mt('Warnings:').'<ul>'.
                       join("\n",@warnings).'</ul>';
    }
    return $output;
}

sub validate_ip_pattern {
    my ($pattern) = @_;
    if ($pattern =~ /^([^-]+)\-([^-]+)$/) {
        my ($start,$end) = ($1,$2);
        if ((&Net::CIDR::cidrvalidate($start)) && (&Net::CIDR::cidrvalidate($end))) {
            if (($start !~ m{/}) && ($end !~ m{/})) {
                return $start.'-'.$end;
            }
        }
    } elsif ($pattern ne '') {
        $pattern = &Net::CIDR::cidrvalidate($pattern);
        if ($pattern ne '') {
            return $pattern;
        }
    }
    return;
}

sub modify_usersessions {
    my ($dom,$lastactref,%domconfig) = @_;
    my @hostingtypes = ('version','excludedomain','includedomain');
    my @offloadtypes = ('primary','default');
    my %types = (
                  remote => \@hostingtypes,
                  hosted => \@hostingtypes,
                  spares => \@offloadtypes,
                );
    my @prefixes = ('remote','hosted','spares');
    my @lcversions = &Apache::lonnet::all_loncaparevs();
    my (%by_ip,%by_location,@intdoms,@instdoms);
    &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);
    my @locations = sort(keys(%by_location));
    my (%defaultshash,%changes);
    foreach my $prefix (@prefixes) {
        $defaultshash{'usersessions'}{$prefix} = {};
    }
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my $resulttext;
    my %iphost = &Apache::lonnet::get_iphost();
    foreach my $prefix (@prefixes) {
        next if ($prefix eq 'spares');
        foreach my $type (@{$types{$prefix}}) {
            my $inuse = $env{'form.'.$prefix.'_'.$type.'_inuse'};
            if ($type eq 'version') {
                my $value = $env{'form.'.$prefix.'_'.$type};
                my $okvalue;
                if ($value ne '') {
                    if (grep(/^\Q$value\E$/,@lcversions)) {
                        $okvalue = $value;
                    }
                }
                if (ref($domconfig{'usersessions'}) eq 'HASH') {
                    if (ref($domconfig{'usersessions'}{$prefix}) eq 'HASH') {
                        if ($domconfig{'usersessions'}{$prefix}{$type} ne '') {
                            if ($inuse == 0) {
                                $changes{$prefix}{$type} = 1;
                            } else {
                                if ($okvalue ne $domconfig{'usersessions'}{$prefix}{$type}) {
                                    $changes{$prefix}{$type} = 1;
                                }
                                if ($okvalue ne '') {
                                    $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
                                } 
                            }
                        } else {
                            if (($inuse == 1) && ($okvalue ne '')) {
                                $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
                                $changes{$prefix}{$type} = 1;
                            }
                        }
                    } else {
                        if (($inuse == 1) && ($okvalue ne '')) {
                            $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
                            $changes{$prefix}{$type} = 1;
                        }
                    }
                } else {
                    if (($inuse == 1) && ($okvalue ne '')) {
                        $defaultshash{'usersessions'}{$prefix}{$type} = $okvalue;
                        $changes{$prefix}{$type} = 1;
                    }
                }
            } else {
                my @vals = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_'.$type);
                my @okvals;
                foreach my $val (@vals) {
                    if ($val =~ /:/) {
                        my @items = split(/:/,$val);
                        foreach my $item (@items) {
                            if (ref($by_location{$item}) eq 'ARRAY') {
                                push(@okvals,$item);
                            }
                        }
                    } else {
                        if (ref($by_location{$val}) eq 'ARRAY') {
                            push(@okvals,$val);
                        }
                    }
                }
                @okvals = sort(@okvals);
                if (ref($domconfig{'usersessions'}) eq 'HASH') {
                    if (ref($domconfig{'usersessions'}{$prefix}) eq 'HASH') {
                        if (ref($domconfig{'usersessions'}{$prefix}{$type}) eq 'ARRAY') {
                            if ($inuse == 0) {
                                $changes{$prefix}{$type} = 1; 
                            } else {
                                $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
                                my @changed = &Apache::loncommon::compare_arrays($domconfig{'usersessions'}{$prefix}{$type},$defaultshash{'usersessions'}{$prefix}{$type});
                                if (@changed > 0) {
                                    $changes{$prefix}{$type} = 1;
                                }
                            }
                        } else {
                            if ($inuse == 1) {
                                $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
                                $changes{$prefix}{$type} = 1;
                            }
                        } 
                    } else {
                        if ($inuse == 1) {
                            $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
                            $changes{$prefix}{$type} = 1;
                        }
                    }
                } else {
                    if ($inuse == 1) {
                        $defaultshash{'usersessions'}{$prefix}{$type} = \@okvals;
                        $changes{$prefix}{$type} = 1;
                    }
                }
            }
        }
    }

    my @alldoms = &Apache::lonnet::all_domains();
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my %spareid = &current_offloads_to($dom,$domconfig{'usersessions'},\%servers);
    my $savespares;

    foreach my $lonhost (sort(keys(%servers))) {
        my $serverhomeID =
            &Apache::lonnet::get_server_homeID($servers{$lonhost});
        my $serverhostname = &Apache::lonnet::hostname($lonhost);
        $defaultshash{'usersessions'}{'spares'}{$lonhost} = {};
        my %spareschg;
        foreach my $type (@{$types{'spares'}}) {
            my @okspares;
            my @checked = &Apache::loncommon::get_env_multiple('form.spare_'.$type.'_'.$lonhost);
            foreach my $server (@checked) {
                if (&Apache::lonnet::hostname($server) ne '') {
                    unless (&Apache::lonnet::hostname($server) eq $serverhostname) {
                        unless (grep(/^\Q$server\E$/,@okspares)) {
                            push(@okspares,$server);
                        }
                    }
                }
            }
            my $new = $env{'form.newspare_'.$type.'_'.$lonhost};
            my $newspare;
            if (($new ne '') && (&Apache::lonnet::hostname($new))) {
                unless (&Apache::lonnet::hostname($new) eq $serverhostname) {
                    $newspare = $new;
                }
            }
            my @spares;
            if (($newspare ne '') && (!grep(/^\Q$newspare\E$/,@okspares))) {
                @spares = sort(@okspares,$newspare);
            } else {
                @spares = sort(@okspares);
            }
            $defaultshash{'usersessions'}{'spares'}{$lonhost}{$type} = \@spares;
            if (ref($spareid{$lonhost}) eq 'HASH') {
                if (ref($spareid{$lonhost}{$type}) eq 'ARRAY') {
                    my @diffs = &Apache::loncommon::compare_arrays($spareid{$lonhost}{$type},\@spares);
                    if (@diffs > 0) {
                        $spareschg{$type} = 1;
                    }
                }
            }
        }
        if (keys(%spareschg) > 0) {
            $changes{'spares'}{$lonhost} = \%spareschg;
        }
    }
    $defaultshash{'usersessions'}{'offloadnow'} = {};
    $defaultshash{'usersessions'}{'offloadoth'} = {};
    my @offloadnow = &Apache::loncommon::get_env_multiple('form.offloadnow');
    my @okoffload;
    if (@offloadnow) {
        foreach my $server (@offloadnow) {
            if (&Apache::lonnet::hostname($server) ne '') {
                unless (grep(/^\Q$server\E$/,@okoffload)) {
                    push(@okoffload,$server);
                }
            }
        }
        if (@okoffload) {
            foreach my $lonhost (@okoffload) {
                $defaultshash{'usersessions'}{'offloadnow'}{$lonhost} = 1;
            }
        }
    }
    my @offloadoth = &Apache::loncommon::get_env_multiple('form.offloadoth');
    my @okoffloadoth;
    if (@offloadoth) {
        foreach my $server (@offloadoth) {
            if (&Apache::lonnet::hostname($server) ne '') {
                unless (grep(/^\Q$server\E$/,@okoffloadoth)) {
                    push(@okoffloadoth,$server);
                }
            }
        }
        if (@okoffloadoth) {
            foreach my $lonhost (@okoffloadoth) {
                $defaultshash{'usersessions'}{'offloadoth'}{$lonhost} = 1;
            }
        }
    }
    if (ref($domconfig{'usersessions'}) eq 'HASH') {
        if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
            if (ref($changes{'spares'}) eq 'HASH') {
                if (keys(%{$changes{'spares'}}) > 0) {
                    $savespares = 1;
                }
            }
        } else {
            $savespares = 1;
        }
        foreach my $offload ('offloadnow','offloadoth') {
            if (ref($domconfig{'usersessions'}{$offload}) eq 'HASH') {
                foreach my $lonhost (keys(%{$domconfig{'usersessions'}{$offload}})) {
                    unless ($defaultshash{'usersessions'}{$offload}{$lonhost}) {
                        $changes{$offload} = 1;
                        last;
                    }
                }
                unless ($changes{$offload}) {
                    foreach my $lonhost (keys(%{$defaultshash{'usersessions'}{$offload}})) {
                        unless ($domconfig{'usersessions'}{$offload}{$lonhost}) {
                            $changes{$offload} = 1;
                            last;
                        }
                    }
                }
            } else {
                if (($offload eq 'offloadnow') && (@okoffload)) {
                     $changes{'offloadnow'} = 1;
                }
                if (($offload eq 'offloadoth') && (@okoffloadoth)) {
                    $changes{'offloadoth'} = 1;
                }
            } 
        }
    } else {
        if (@okoffload) {
            $changes{'offloadnow'} = 1;
        }
        if (@okoffloadoth) {
            $changes{'offloadoth'} = 1;
        }
    }
    my $nochgmsg = &mt('No changes made to settings for user session hosting/offloading.');
    if ((keys(%changes) > 0) || ($savespares)) {
        my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                                 $dom);
        if ($putresult eq 'ok') {
            if (ref($defaultshash{'usersessions'}) eq 'HASH') {
                if (ref($defaultshash{'usersessions'}{'remote'}) eq 'HASH') {
                    $domdefaults{'remotesessions'} = $defaultshash{'usersessions'}{'remote'};
                }
                if (ref($defaultshash{'usersessions'}{'hosted'}) eq 'HASH') {
                    $domdefaults{'hostedsessions'} = $defaultshash{'usersessions'}{'hosted'};
                }
                if (ref($defaultshash{'usersessions'}{'offloadnow'}) eq 'HASH') {
                    $domdefaults{'offloadnow'} = $defaultshash{'usersessions'}{'offloadnow'};
                }
                if (ref($defaultshash{'usersessions'}{'offloadoth'}) eq 'HASH') {
                    $domdefaults{'offloadoth'} = $defaultshash{'usersessions'}{'offloadoth'};
                }
            }
            my $cachetime = 24*60*60;
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            &Apache::lonnet::do_cache_new('usersessions',$dom,$defaultshash{'usersessions'},3600);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
                $lastactref->{'usersessions'} = 1;
            }
            if (keys(%changes) > 0) {
                my %lt = &usersession_titles();
                $resulttext = &mt('Changes made:').'<ul>';
                foreach my $prefix (@prefixes) {
                    if (ref($changes{$prefix}) eq 'HASH') {
                        $resulttext .= '<li>'.$lt{$prefix}.'<ul>';
                        if ($prefix eq 'spares') {
                            if (ref($changes{$prefix}) eq 'HASH') {
                                foreach my $lonhost (sort(keys(%{$changes{$prefix}}))) {
                                    $resulttext .= '<li><b>'.$lonhost.'</b> ';
                                    my $lonhostdom = &Apache::lonnet::host_domain($lonhost);
                                    my $cachekey = &escape('spares').':'.&escape($lonhostdom);
                                    &Apache::lonnet::remote_devalidate_cache($lonhost,[$cachekey]);
                                    if (ref($changes{$prefix}{$lonhost}) eq 'HASH') {
                                        foreach my $type (@{$types{$prefix}}) {
                                            if ($changes{$prefix}{$lonhost}{$type}) {
                                                my $offloadto = &mt('None');
                                                if (ref($defaultshash{'usersessions'}{'spares'}{$lonhost}{$type}) eq 'ARRAY') {
                                                    if (@{$defaultshash{'usersessions'}{'spares'}{$lonhost}{$type}} > 0) {   
                                                        $offloadto = join(', ',@{$defaultshash{'usersessions'}{'spares'}{$lonhost}{$type}});
                                                    }
                                                }
                                                $resulttext .= &mt('[_1] set to: [_2].','<i>'.$lt{$type}.'</i>',$offloadto).('&nbsp;'x3);
                                            }
                                        }
                                    }
                                    $resulttext .= '</li>';
                                }
                            }
                        } else {
                            foreach my $type (@{$types{$prefix}}) {
                                if (defined($changes{$prefix}{$type})) {
                                    my ($newvalue,$notinuse);
                                    if (ref($defaultshash{'usersessions'}) eq 'HASH') {
                                        if (ref($defaultshash{'usersessions'}{$prefix})) {
                                            if ($type eq 'version') {
                                                $newvalue = $defaultshash{'usersessions'}{$prefix}{$type};
                                            } else {
                                                if (ref($defaultshash{'usersessions'}{$prefix}{$type}) eq 'ARRAY') {
                                                    if (@{$defaultshash{'usersessions'}{$prefix}{$type}} > 0) {
                                                        $newvalue = join(', ',@{$defaultshash{'usersessions'}{$prefix}{$type}});
                                                    }
                                                } else {
                                                    $notinuse = 1;
                                                }
                                            }
                                        }
                                    }
                                    if ($newvalue eq '') {
                                        if ($type eq 'version') {
                                            $resulttext .= '<li>'.&mt('[_1] set to: off',$lt{$type}).'</li>';
                                        } elsif ($notinuse) {
                                            $resulttext .= '<li>'.&mt('[_1] set to: not in use',$lt{$type}).'</li>';
                                        } else {
                                            $resulttext .= '<li>'.&mt('[_1] set to: none',$lt{$type}).'</li>';
                                        }
                                    } else {
                                        if ($type eq 'version') {
                                            $newvalue .= ' '.&mt('(or later)');
                                        }
                                        $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$lt{$type},$newvalue).'</li>';
                                    }
                                }
                            }
                        }
                        $resulttext .= '</ul>';
                    }
                }
                if ($changes{'offloadnow'}) {
                    if (ref($defaultshash{'usersessions'}{'offloadnow'}) eq 'HASH') {
                        if (keys(%{$defaultshash{'usersessions'}{'offloadnow'}}) > 0) {
                            $resulttext .= '<li>'.&mt('Switch any active user on next access, for server(s):').'<ul>';
                            foreach my $lonhost (sort(keys(%{$defaultshash{'usersessions'}{'offloadnow'}}))) {
                                $resulttext .= '<li>'.$lonhost.'</li>';
                            }
                            $resulttext .= '</ul>';
                        } else {
                            $resulttext .= '<li>'.&mt('No servers now set to switch any active user on next access.');
                        }
                    } else {
                        $resulttext .= '<li>'.&mt('No servers now set to switch any active user on next access.').'</li>';
                    }
                }
                if ($changes{'offloadoth'}) {
                    if (ref($defaultshash{'usersessions'}{'offloadoth'}) eq 'HASH') {
                        if (keys(%{$defaultshash{'usersessions'}{'offloadoth'}}) > 0) {
                            $resulttext .= '<li>'.&mt('Switch other institutions on next access, for server(s):').'<ul>';
                            foreach my $lonhost (sort(keys(%{$defaultshash{'usersessions'}{'offloadoth'}}))) {
                                $resulttext .= '<li>'.$lonhost.'</li>';
                            }
                            $resulttext .= '</ul>';
                        } else {
                            $resulttext .= '<li>'.&mt('No servers now set to switch other institutions on next access.');
                        }
                    } else {
                        $resulttext .= '<li>'.&mt('No servers now set to switch other institutions on next access.').'</li>';
                    }
                }
                $resulttext .= '</ul>';
            } else {
                $resulttext = $nochgmsg;
            }
        } else {
            $resulttext = '<span class="LC_error">'.
                          &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } else {
        $resulttext = $nochgmsg;
    }
    return $resulttext;
}

sub modify_ssl {
    my ($dom,$lastactref,%domconfig) = @_;
    my (%by_ip,%by_location,@intdoms,@instdoms);
    &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);
    my @locations = sort(keys(%by_location));
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my (%defaultshash,%changes);
    my $action = 'ssl';
    my @prefixes = ('connto','connfrom','replication');
    foreach my $prefix (@prefixes) {
        $defaultshash{$action}{$prefix} = {};
    }
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my $resulttext;
    my %iphost = &Apache::lonnet::get_iphost();
    my @reptypes = ('certreq','nocertreq');
    my @connecttypes = ('dom','intdom','other');
    my %types = (
                  connto      => \@connecttypes,
                  connfrom    => \@connecttypes,
                  replication => \@reptypes,
                );
    foreach my $prefix (sort(keys(%types))) {
        foreach my $type (@{$types{$prefix}}) {
            if (($prefix eq 'connto') || ($prefix eq 'connfrom')) {
                my $value = 'yes';
                if ($env{'form.'.$prefix.'_'.$type} =~ /^(no|req)$/) {
                    $value = $env{'form.'.$prefix.'_'.$type};
                }
                if (ref($domconfig{$action}) eq 'HASH') {
                    if (ref($domconfig{$action}{$prefix}) eq 'HASH') {
                        if ($domconfig{$action}{$prefix}{$type} ne '') {
                            if ($value ne $domconfig{$action}{$prefix}{$type}) {
                                $changes{$prefix}{$type} = 1;
                            }
                            $defaultshash{$action}{$prefix}{$type} = $value;
                        } else {
                            $defaultshash{$action}{$prefix}{$type} = $value;
                            $changes{$prefix}{$type} = 1;
                        }
                    } else {
                        $defaultshash{$action}{$prefix}{$type} = $value;
                        $changes{$prefix}{$type} = 1;
                    }
                } else {
                    $defaultshash{$action}{$prefix}{$type} = $value;
                    $changes{$prefix}{$type} = 1;
                }
                if (($type eq 'dom') && (keys(%servers) == 1)) {
                    delete($changes{$prefix}{$type});
                } elsif (($type eq 'intdom') && (@instdoms == 1)) {
                    delete($changes{$prefix}{$type});
                } elsif (($type eq 'other') && (keys(%by_location) == 0)) { 
                    delete($changes{$prefix}{$type});
                }
            } elsif ($prefix eq 'replication') {
                if (@locations > 0) {
                    my $inuse = $env{'form.'.$prefix.'_'.$type.'_inuse'};
                    my @vals = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_'.$type);
                    my @okvals;
                    foreach my $val (@vals) {
                        if ($val =~ /:/) {
                            my @items = split(/:/,$val);
                            foreach my $item (@items) {
                                if (ref($by_location{$item}) eq 'ARRAY') {
                                    push(@okvals,$item);
                                }
                            }
                        } else {
                            if (ref($by_location{$val}) eq 'ARRAY') {
                                push(@okvals,$val);
                            }
                        }
                    }
                    @okvals = sort(@okvals);
                    if (ref($domconfig{$action}) eq 'HASH') {
                        if (ref($domconfig{$action}{$prefix}) eq 'HASH') {
                            if (ref($domconfig{$action}{$prefix}{$type}) eq 'ARRAY') {
                                if ($inuse == 0) {
                                    $changes{$prefix}{$type} = 1;
                                } else {
                                    $defaultshash{$action}{$prefix}{$type} = \@okvals;
                                    my @changed = &Apache::loncommon::compare_arrays($domconfig{$action}{$prefix}{$type},$defaultshash{$action}{$prefix}{$type});
                                    if (@changed > 0) {
                                        $changes{$prefix}{$type} = 1;
                                    }
                                }
                            } else {
                                if ($inuse == 1) {
                                    $defaultshash{$action}{$prefix}{$type} = \@okvals;
                                    $changes{$prefix}{$type} = 1;
                                }
                            }
                        } else {
                            if ($inuse == 1) {
                                $defaultshash{$action}{$prefix}{$type} = \@okvals;
                                $changes{$prefix}{$type} = 1;
                            }
                        }
                    } else {
                        if ($inuse == 1) {
                            $defaultshash{$action}{$prefix}{$type} = \@okvals;
                            $changes{$prefix}{$type} = 1;
                        }
                    }
                }
            }
        }
    }
    if (keys(%changes)) {
        foreach my $prefix (keys(%changes)) {
            if (ref($changes{$prefix}) eq 'HASH') {
                if (scalar(keys(%{$changes{$prefix}})) == 0) {
                    delete($changes{$prefix});
                }
            } else {
                delete($changes{$prefix});
            }
        }
    }
    my $nochgmsg = &mt('No changes made to LON-CAPA SSL settings');
    if (keys(%changes) > 0) {
        my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                                 $dom);
        if ($putresult eq 'ok') {
            if (ref($defaultshash{$action}) eq 'HASH') {
                if (ref($defaultshash{$action}{'replication'}) eq 'HASH') {
                    $domdefaults{'replication'} = $defaultshash{$action}{'replication'};
                }
                if (ref($defaultshash{$action}{'connto'}) eq 'HASH') {
                    $domdefaults{'connto'} = $defaultshash{$action}{'connto'};
                }
                if (ref($defaultshash{$action}{'connfrom'}) eq 'HASH') {
                    $domdefaults{'connfrom'} = $defaultshash{$action}{'connfrom'};
                }
            }
            my $cachetime = 24*60*60;
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
            if (keys(%changes) > 0) {
                my %titles = &ssl_titles();
                $resulttext = &mt('Changes made:').'<ul>';
                foreach my $prefix (@prefixes) {
                    if (ref($changes{$prefix}) eq 'HASH') {
                        $resulttext .= '<li>'.$titles{$prefix}.'<ul>';
                        foreach my $type (@{$types{$prefix}}) {
                            if (defined($changes{$prefix}{$type})) {
                                my ($newvalue,$notinuse);
                                if (ref($defaultshash{$action}) eq 'HASH') {
                                    if (ref($defaultshash{$action}{$prefix})) {
                                        if (($prefix eq 'connto') || ($prefix eq 'connfrom')) {
                                            $newvalue = $titles{$defaultshash{$action}{$prefix}{$type}};
                                        } else {
                                            if (ref($defaultshash{$action}{$prefix}{$type}) eq 'ARRAY') {
                                                if (@{$defaultshash{$action}{$prefix}{$type}} > 0) {
                                                    $newvalue = join(', ',@{$defaultshash{$action}{$prefix}{$type}});
                                                }
                                            } else {
                                                $notinuse = 1;
                                            }
                                        }
                                    }
                                    if ($notinuse) {
                                        $resulttext .= '<li>'.&mt('[_1] set to: not in use',$titles{$type}).'</li>';
                                    } elsif ($newvalue eq '') {
                                        $resulttext .= '<li>'.&mt('[_1] set to: none',$titles{$type}).'</li>';
                                    } else {
                                        $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$titles{$type},$newvalue).'</li>';
                                    }
                                }
                            }
                        }
                        $resulttext .= '</ul>';
                    }
                }
            } else {
                $resulttext = $nochgmsg;
            }
        } else {
            $resulttext = '<span class="LC_error">'.
                          &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } else {
        $resulttext = $nochgmsg;
    }
    return $resulttext;
}

sub modify_trust {
    my ($dom,$lastactref,%domconfig) = @_;
    my (%by_ip,%by_location,@intdoms,@instdoms);
    &build_location_hashes(\@intdoms,\%by_ip,\%by_location,\@instdoms);
    my @locations = sort(keys(%by_location));
    my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
    my @types = ('exc','inc');
    my (%defaultshash,%changes);
    foreach my $prefix (@prefixes) {
        $defaultshash{'trust'}{$prefix} = {};
    }
    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
    my $resulttext;
    foreach my $prefix (@prefixes) {
        foreach my $type (@types) {
            my $inuse = $env{'form.'.$prefix.'_'.$type.'_inuse'};
            my @vals = &Apache::loncommon::get_env_multiple('form.'.$prefix.'_'.$type);
            my @okvals;
            foreach my $val (@vals) {
                if ($val =~ /:/) {
                    my @items = split(/:/,$val);
                    foreach my $item (@items) {
                        if (ref($by_location{$item}) eq 'ARRAY') {
                            push(@okvals,$item);
                        }
                    }
                } else {
                    if (ref($by_location{$val}) eq 'ARRAY') {
                        push(@okvals,$val);
                    }
                }
            }
            @okvals = sort(@okvals);
            if (ref($domconfig{'trust'}) eq 'HASH') {
                if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
                    if (ref($domconfig{'trust'}{$prefix}{$type}) eq 'ARRAY') {
                        if ($inuse == 0) {
                            $changes{$prefix}{$type} = 1;
                        } else {
                            $defaultshash{'trust'}{$prefix}{$type} = \@okvals;
                            my @changed = &Apache::loncommon::compare_arrays($domconfig{'trust'}{$prefix}{$type},$defaultshash{'trust'}{$prefix}{$type});
                            if (@changed > 0) {
                                $changes{$prefix}{$type} = 1;
                            }
                        }
                    } else {
                        if ($inuse == 1) {
                            $defaultshash{'trust'}{$prefix}{$type} = \@okvals;
                            $changes{$prefix}{$type} = 1;
                        }
                    }
                } else {
                    if ($inuse == 1) {
                        $defaultshash{'trust'}{$prefix}{$type} = \@okvals;
                        $changes{$prefix}{$type} = 1;
                    }
                }
            } else {
                if ($inuse == 1) {
                    $defaultshash{'trust'}{$prefix}{$type} = \@okvals;
                    $changes{$prefix}{$type} = 1;
                }
            }
        }
    }
    my $nochgmsg = &mt('No changes made to trust settings.');
    if (keys(%changes) > 0) {
        my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                                 $dom);
        if ($putresult eq 'ok') {
            if (ref($defaultshash{'trust'}) eq 'HASH') {
                foreach my $prefix (@prefixes) {
                    if (ref($defaultshash{'trust'}{$prefix}) eq 'HASH') {
                        $domdefaults{'trust'.$prefix} = $defaultshash{'trust'}{$prefix};
                    }
                }
            }
            my $cachetime = 24*60*60;
            &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
            if (ref($lastactref) eq 'HASH') {
                $lastactref->{'domdefaults'} = 1;
            }
            if (keys(%changes) > 0) {
                my %lt = &trust_titles();
                $resulttext = &mt('Changes made:').'<ul>';
                foreach my $prefix (@prefixes) {
                    if (ref($changes{$prefix}) eq 'HASH') {
                        $resulttext .= '<li>'.$lt{$prefix}.'<ul>';
                        foreach my $type (@types) {
                            if (defined($changes{$prefix}{$type})) {
                                my ($newvalue,$notinuse);
                                if (ref($defaultshash{'trust'}) eq 'HASH') {
                                    if (ref($defaultshash{'trust'}{$prefix})) {
                                        if (ref($defaultshash{'trust'}{$prefix}{$type}) eq 'ARRAY') {
                                            if (@{$defaultshash{'trust'}{$prefix}{$type}} > 0) {
                                                $newvalue = join(', ',@{$defaultshash{'trust'}{$prefix}{$type}});
                                            }
                                        } else {
                                            $notinuse = 1;
                                        }
                                    }
                                }
                                if ($notinuse) {
                                    $resulttext .= '<li>'.&mt('[_1] set to: not in use',$lt{$type}).'</li>';
                                } elsif ($newvalue eq '') {
                                    $resulttext .= '<li>'.&mt('[_1] set to: none',$lt{$type}).'</li>';
                                } else {
                                    $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$lt{$type},$newvalue).'</li>';
                                }
                            }
                        }
                        $resulttext .= '</ul>';
                    }
                }
                $resulttext .= '</ul>';
            } else {
                $resulttext = $nochgmsg;
            }
        } else {
            $resulttext = '<span class="LC_error">'.
                          &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } else {
        $resulttext = $nochgmsg;
    }
    return $resulttext;
}

sub modify_loadbalancing {
    my ($dom,%domconfig) = @_;
    my $primary_id = &Apache::lonnet::domain($dom,'primary');
    my $intdom = &Apache::lonnet::internet_dom($primary_id);
    my ($othertitle,$usertypes,$types) =
        &Apache::loncommon::sorted_inst_types($dom);
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my %libraryservers = &Apache::lonnet::get_servers($dom,'library');
    my @sparestypes = ('primary','default');
    my %typetitles = &sparestype_titles();
    my $resulttext;
    my (%currbalancer,%currtargets,%currrules,%existing,%currcookies);
    if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
        %existing = %{$domconfig{'loadbalancing'}};
    }
    &get_loadbalancers_config(\%servers,\%existing,\%currbalancer,
                              \%currtargets,\%currrules,\%currcookies);
    my ($saveloadbalancing,%defaultshash,%changes);
    my ($alltypes,$othertypes,$titles) =
        &loadbalancing_titles($dom,$intdom,$usertypes,$types);
    my %ruletitles = &offloadtype_text();
    my @deletions = &Apache::loncommon::get_env_multiple('form.loadbalancing_delete');
    for (my $i=0; $i<$env{'form.loadbalancing_total'}; $i++) {
        my $balancer = $env{'form.loadbalancing_lonhost_'.$i};
        if ($balancer eq '') {
            next;
        }
        if (!exists($servers{$balancer})) {
            if (exists($currbalancer{$balancer})) {
                push(@{$changes{'delete'}},$balancer);
            }
            next;
        }
        if ((@deletions > 0) && (grep(/^\Q$i\E$/,@deletions))) {
            push(@{$changes{'delete'}},$balancer);
            next;
        }
        if (!exists($currbalancer{$balancer})) {
            push(@{$changes{'add'}},$balancer);
        }
        $defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'} = [];
        $defaultshash{'loadbalancing'}{$balancer}{'targets'}{'default'} = [];
        $defaultshash{'loadbalancing'}{$balancer}{'rules'} = {};
        unless (ref($domconfig{'loadbalancing'}) eq 'HASH') {
            $saveloadbalancing = 1;
        }
        foreach my $sparetype (@sparestypes) {
            my @targets = &Apache::loncommon::get_env_multiple('form.loadbalancing_target_'.$i.'_'.$sparetype);
            my @offloadto;
            foreach my $target (@targets) {
                if (($servers{$target}) && ($target ne $balancer)) {
                    if ($sparetype eq 'default') {
                        if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'}) eq 'ARRAY') {
                            next if (grep(/^\Q$target\E$/,@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'}}));
                        }
                    }
                    unless(grep(/^\Q$target\E$/,@offloadto)) {
                        push(@offloadto,$target);
                    }
                }
            }
            if ($env{'form.loadbalancing_target_'.$i.'_hosthere'} eq $sparetype) {
                unless(grep(/^\Q$balancer\E$/,@offloadto)) {
                    push(@offloadto,$balancer);
                }
            }
            $defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype} = \@offloadto;
        }
        if ($env{'form.loadbalancing_cookie_'.$i}) {
            $defaultshash{'loadbalancing'}{$balancer}{'cookie'} = 1;
            if (exists($currbalancer{$balancer})) { 
                unless ($currcookies{$balancer}) {
                    $changes{'curr'}{$balancer}{'cookie'} = 1;
                }
            }
        } elsif (exists($currbalancer{$balancer})) {
            if ($currcookies{$balancer}) {
                $changes{'curr'}{$balancer}{'cookie'} = 1;
            }
        }
        if (ref($currtargets{$balancer}) eq 'HASH') {
            foreach my $sparetype (@sparestypes) {
                if (ref($currtargets{$balancer}{$sparetype}) eq 'ARRAY') {
                    my @targetdiffs = &Apache::loncommon::compare_arrays($currtargets{$balancer}{$sparetype},$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype});
                    if (@targetdiffs > 0) {
                        $changes{'curr'}{$balancer}{'targets'} = 1;
                    }
                } elsif (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
                    if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) {
                        $changes{'curr'}{$balancer}{'targets'} = 1;
                    }
                }
            }
        } else {
            if (ref($defaultshash{'loadbalancing'}{$balancer}) eq 'HASH') {
                foreach my $sparetype (@sparestypes) {
                    if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
                        if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) {
                            $changes{'curr'}{$balancer}{'targets'} = 1;
                        }
                    }
                }
            }
        }
        my $ishomedom;
        if (&Apache::lonnet::host_domain($balancer) eq $dom) {
            $ishomedom = 1;
        }
        if (ref($alltypes) eq 'ARRAY') {
            foreach my $type (@{$alltypes}) {
                my $rule;
                unless ((($type eq '_LC_external') || ($type eq '_LC_internetdom')) &&
                         (!$ishomedom)) {
                    $rule = $env{'form.loadbalancing_rules_'.$i.'_'.$type};
                }
                if ($rule eq 'specific') {
                    my $specifiedhost = $env{'form.loadbalancing_singleserver_'.$i.'_'.$type};
                    if (exists($servers{$specifiedhost})) {
                        $rule = $specifiedhost;
                    }
                }
                $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type} = $rule;
                if (ref($currrules{$balancer}) eq 'HASH') {
                    if ($rule ne $currrules{$balancer}{$type}) {
                        $changes{'curr'}{$balancer}{'rules'}{$type} = 1;
                    }
                } elsif ($rule ne '') {
                    $changes{'curr'}{$balancer}{'rules'}{$type} = 1;
                }
            }
        }
    }
    my $nochgmsg = &mt('No changes made to Load Balancer settings.');
    if ((keys(%changes) > 0) || ($saveloadbalancing)) {
        unless (ref($defaultshash{'loadbalancing'}) eq 'HASH') {
            $defaultshash{'loadbalancing'} = {};
        }
        my $putresult = &Apache::lonnet::put_dom('configuration',
                                                 \%defaultshash,$dom);
        if ($putresult eq 'ok') {
            if (keys(%changes) > 0) {
                my %toupdate;
                if (ref($changes{'delete'}) eq 'ARRAY') {
                    foreach my $balancer (sort(@{$changes{'delete'}})) {
                        $resulttext .= '<li>'.&mt('Load Balancing discontinued for: [_1]',$balancer).'</li>';
                        $toupdate{$balancer} = 1;
                    }
                }
                if (ref($changes{'add'}) eq 'ARRAY') {
                    foreach my $balancer (sort(@{$changes{'add'}})) {
                        $resulttext .= '<li>'.&mt('Load Balancing enabled for: [_1]',$balancer);
                        $toupdate{$balancer} = 1;
                    }
                }
                if (ref($changes{'curr'}) eq 'HASH') {
                    foreach my $balancer (sort(keys(%{$changes{'curr'}}))) {
                        $toupdate{$balancer} = 1;
                        if (ref($changes{'curr'}{$balancer}) eq 'HASH') {
                            if ($changes{'curr'}{$balancer}{'targets'}) {
                                my %offloadstr;
                                foreach my $sparetype (@sparestypes) {
                                    if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
                                        if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) {
                                            $offloadstr{$sparetype} = join(', ',@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}});
                                        }
                                    }
                                }
                                if (keys(%offloadstr) == 0) {
                                    $resulttext .= '<li>'.&mt("Servers to which Load Balance server offloads set to 'None', by default").'</li>';
                                } else {
                                    my $showoffload;
                                    foreach my $sparetype (@sparestypes) {
                                        $showoffload .= '<i>'.$typetitles{$sparetype}.'</i>:&nbsp;';
                                        if (defined($offloadstr{$sparetype})) {
                                            $showoffload .= $offloadstr{$sparetype};
                                        } else {
                                            $showoffload .= &mt('None');
                                        }
                                        $showoffload .= ('&nbsp;'x3);
                                    }
                                    $resulttext .= '<li>'.&mt('By default, Load Balancer: [_1] set to offload to - [_2]',$balancer,$showoffload).'</li>';
                                }
                            }
                        }
                        if (ref($changes{'curr'}{$balancer}{'rules'}) eq 'HASH') {
                            if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH')) {
                                foreach my $type (@{$alltypes}) {
                                    if ($changes{'curr'}{$balancer}{'rules'}{$type}) {
                                        my $rule = $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type};
                                        my $balancetext;
                                        if ($rule eq '') {
                                            $balancetext =  $ruletitles{'default'};
                                        } elsif (($rule eq 'homeserver') || ($rule eq 'externalbalancer') ||
                                                 ($type eq '_LC_ipchange') || ($type eq '_LC_ipchangesso')) {
                                            if (($type eq '_LC_ipchange') || ($type eq '_LC_ipchangesso')) {
                                                foreach my $sparetype (@sparestypes) {
                                                    if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
                                                        map { $toupdate{$_} = 1; } (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}});
                                                    }
                                                }
                                                foreach my $item (@{$alltypes}) {
                                                    next if ($item =~  /^_LC_ipchange/);
                                                    my $hasrule = $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$item};
                                                    if ($hasrule eq 'homeserver') {
                                                        map { $toupdate{$_} = 1; } (keys(%libraryservers));
                                                    } else {
                                                        unless (($hasrule eq 'default') || ($hasrule eq 'none') || ($hasrule eq 'externalbalancer')) {
                                                            if ($servers{$hasrule}) {
                                                                $toupdate{$hasrule} = 1;
                                                            }
                                                        }
                                                    }
                                                }
                                                if (($rule eq 'balancer') || ($rule eq 'offloadedto')) {
                                                    $balancetext =  $ruletitles{$rule};
                                                } else {
                                                    my $receiver = $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type};
                                                    $balancetext = $ruletitles{'particular'}.' '.$receiver;
                                                    if ($receiver) {
                                                        $toupdate{$receiver};
                                                    }
                                                }
                                            } else {
                                                $balancetext =  $ruletitles{$rule};
                                            }
                                        } else {
                                            $balancetext = &mt('offload to [_1]',$defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type});
                                        }
                                        $resulttext .= '<li>'.&mt('Load Balancer: [_1] -- balancing for [_2] set to - "[_3]"',$balancer,$titles->{$type},$balancetext).'</li>';
                                    }
                                }
                            }
                        }
                        if ($changes{'curr'}{$balancer}{'cookie'}) {
                            if ($currcookies{$balancer}) {
                                $resulttext .= '<li>'.&mt('Load Balancer: [_1] -- cookie use disabled',
                                                          $balancer).'</li>';
                            } else {
                                $resulttext .= '<li>'.&mt('Load Balancer: [_1] -- cookie use enabled',
                                                          $balancer).'</li>';
                            }
                        }
                    }
                }
                if (keys(%toupdate)) {
                    my %thismachine;
                    my $updatedhere;
                    my $cachetime = 60*60*24;
                    map { $thismachine{$_} = 1; } &Apache::lonnet::current_machine_ids();
                    foreach my $lonhost (keys(%toupdate)) {
                        if ($thismachine{$lonhost}) {
                            unless ($updatedhere) {
                                &Apache::lonnet::do_cache_new('loadbalancing',$dom,
                                                              $defaultshash{'loadbalancing'},
                                                              $cachetime);
                                $updatedhere = 1;
                            }
                        } else {
                            my $cachekey = &escape('loadbalancing').':'.&escape($dom);
                            &Apache::lonnet::remote_devalidate_cache($lonhost,[$cachekey]);
                        }
                    }
                }
                if ($resulttext ne '') {
                    $resulttext = &mt('Changes made:').'<ul>'.$resulttext.'</ul>';
                } else {
                    $resulttext = $nochgmsg;
                }
            } else {
                $resulttext = $nochgmsg;
            }
        } else {
            $resulttext = '<span class="LC_error">'.
                          &mt('An error occurred: [_1]',$putresult).'</span>';
        }
    } else {
        $resulttext = $nochgmsg;
    }
    return $resulttext;
}

sub recurse_check {
    my ($chkcats,$categories,$depth,$name) = @_;
    if (ref($chkcats->[$depth]{$name}) eq 'ARRAY') {
        my $chg = 0;
        for (my $j=0; $j<@{$chkcats->[$depth]{$name}}; $j++) {
            my $category = $chkcats->[$depth]{$name}[$j];
            my $item;
            if ($category eq '') {
                $chg ++;
            } else {
                my $deeper = $depth + 1;
                $item = &escape($category).':'.&escape($name).':'.$depth;
                if ($chg) {
                    $categories->{$item} -= $chg;
                }
                &recurse_check($chkcats,$categories,$deeper,$category);
                $deeper --;
            }
        }
    }
    return;
}

sub recurse_cat_deletes {
    my ($item,$coursecategories,$deletions) = @_;
    my ($deleted,$container,$depth) = map { &unescape($_); } split(/:/,$item);
    my $subdepth = $depth + 1;
    if (ref($coursecategories) eq 'HASH') {
        foreach my $subitem (keys(%{$coursecategories})) {
            my ($child,$parent,$itemdepth) = map { &unescape($_); } split(/:/,$subitem);
            if (($parent eq $deleted) && ($itemdepth == $subdepth)) {
                delete($coursecategories->{$subitem});
                $deletions->{$subitem} = 1;
                &recurse_cat_deletes($subitem,$coursecategories,$deletions);
            }
        }
    }
    return;
}

sub active_dc_picker {
    my ($dom,$numinrow,$inputtype,$name,%currhash) = @_;
    my %domcoords = &Apache::lonnet::get_active_domroles($dom,['dc']);
    my @domcoord = keys(%domcoords);
    if (keys(%currhash)) {
        foreach my $dc (keys(%currhash)) {
            unless (exists($domcoords{$dc})) {
                push(@domcoord,$dc);
            }
        }
    }
    @domcoord = sort(@domcoord);
    my $numdcs = scalar(@domcoord);
    my $rows = 0;
    my $table;
    if ($numdcs > 1) {
        $table = '<table>';
        for (my $i=0; $i<@domcoord; $i++) {
            my $rem = $i%($numinrow);
            if ($rem == 0) {
                if ($i > 0) {
                    $table .= '</tr>';
                }
                $table .= '<tr>';
                $rows ++;
            }
            my $check = '';
            if ($inputtype eq 'radio') {
                if (keys(%currhash) == 0) {
                    if (!$i) {
                        $check = ' checked="checked"';
                    }
                } elsif (exists($currhash{$domcoord[$i]})) {
                    $check = ' checked="checked"';
                }
            } else {
                if (exists($currhash{$domcoord[$i]})) {
                    $check = ' checked="checked"';
                }
            }
            if ($i == @domcoord - 1) {
                my $colsleft = $numinrow - $rem;
                if ($colsleft > 1) {
                    $table .= '<td class="LC_left_item" colspan="'.$colsleft.'">';
                } else {
                    $table .= '<td class="LC_left_item">';
                }
            } else {
                $table .= '<td class="LC_left_item">';
            }
            my ($dcname,$dcdom) = split(':',$domcoord[$i]);
            my $user = &Apache::loncommon::plainname($dcname,$dcdom);
            $table .= '<span class="LC_nobreak"><label>'.
                      '<input type="'.$inputtype.'" name="'.$name.'"'.
                      ' value="'.$domcoord[$i].'"'.$check.' />'.$user;
            if ($user ne $dcname.':'.$dcdom) {
                $table .=  ' ('.$dcname.':'.$dcdom.')';
            }
            $table .= '</label></span></td>';
        }
        $table .= '</tr></table>';
    } elsif ($numdcs == 1) {
        my ($dcname,$dcdom) = split(':',$domcoord[0]);
        my $user = &Apache::loncommon::plainname($dcname,$dcdom);
        if ($inputtype eq 'radio') {
            $table = '<input type="hidden" name="'.$name.'" value="'.$domcoord[0].'" />'.$user;
            if ($user ne $dcname.':'.$dcdom) {
                $table .=  ' ('.$dcname.':'.$dcdom.')';
            }
        } else {
            my $check;
            if (exists($currhash{$domcoord[0]})) {
                $check = ' checked="checked"';
            }
            $table = '<span class="LC_nobreak"><label>'.
                     '<input type="checkbox" name="'.$name.'" '.
                     'value="'.$domcoord[0].'"'.$check.' />'.$user;
            if ($user ne $dcname.':'.$dcdom) {
                $table .=  ' ('.$dcname.':'.$dcdom.')';
            }
            $table .= '</label></span>';
            $rows ++;
        }
    }
    return ($numdcs,$table,$rows);
}

sub usersession_titles {
    return &Apache::lonlocal::texthash(
               hosted => 'Hosting of sessions for users from other domains on servers in this domain',
               remote => 'Hosting of sessions for users in this domain on servers in other domains',
               spares => 'Servers offloaded to, when busy',
               version => 'LON-CAPA version requirement',
               excludedomain => 'Allow all, but exclude specific domains',
               includedomain => 'Deny all, but include specific domains',
               primary => 'Primary (checked first)',
               default => 'Default',
           );
}

sub id_for_thisdom {
    my (%servers) = @_;
    my %altids;
    foreach my $server (keys(%servers)) {
        my $serverhome = &Apache::lonnet::get_server_homeID($servers{$server});
        if ($serverhome ne $server) {
            $altids{$serverhome} = $server;
        }
    }
    return %altids;
}

sub count_servers {
    my ($currbalancer,%servers) = @_;
    my (@spares,$numspares);
    foreach my $lonhost (sort(keys(%servers))) {
        next if ($currbalancer eq $lonhost);
        push(@spares,$lonhost);
    }
    if ($currbalancer) {
        $numspares = scalar(@spares);
    } else {
        $numspares = scalar(@spares) - 1;
    }
    return ($numspares,@spares);
}

sub lonbalance_targets_js {
    my ($dom,$types,$servers,$settings) = @_;
    my $select = &mt('Select');
    my ($alltargets,$allishome,$allinsttypes,@alltypes);
    if (ref($servers) eq 'HASH') {
        $alltargets = join("','",sort(keys(%{$servers})));
        my @homedoms;
        foreach my $server (sort(keys(%{$servers}))) {
            if (&Apache::lonnet::host_domain($server) eq $dom) {
                push(@homedoms,'1');
            } else {
                push(@homedoms,'0');
            }
        }
        $allishome = join("','",@homedoms);
    }
    if (ref($types) eq 'ARRAY') {
        if (@{$types} > 0) {
            @alltypes = @{$types};
        }
    }
    push(@alltypes,'default','_LC_adv','_LC_author','_LC_internetdom','_LC_external');
    $allinsttypes = join("','",@alltypes);
    my (%currbalancer,%currtargets,%currrules,%existing,%currcookies);
    if (ref($settings) eq 'HASH') {
        %existing = %{$settings};
    }
    &get_loadbalancers_config($servers,\%existing,\%currbalancer,
                              \%currtargets,\%currrules,\%currcookies);
    my $balancers = join("','",sort(keys(%currbalancer)));
    return <<"END";

<script type="text/javascript">
// <![CDATA[

currBalancers = new Array('$balancers');

function toggleTargets(balnum) {
    var lonhostitem = document.getElementById('loadbalancing_lonhost_'+balnum);
    var prevhostitem = document.getElementById('loadbalancing_prevlonhost_'+balnum);
    var balancer = lonhostitem.options[lonhostitem.selectedIndex].value;
    var prevbalancer = prevhostitem.value;
    var baltotal = document.getElementById('loadbalancing_total').value;
    prevhostitem.value = balancer;
    if (prevbalancer != '') {
        var prevIdx = currBalancers.indexOf(prevbalancer);
        if (prevIdx != -1) {
            currBalancers.splice(prevIdx,1);
        }
    }
    if (balancer == '') {
        hideSpares(balnum);
    } else {
        var currIdx = currBalancers.indexOf(balancer);
        if (currIdx == -1) {
            currBalancers.push(balancer);
        }
        var homedoms = new Array('$allishome');
        var ishomedom = homedoms[lonhostitem.selectedIndex];
        showSpares(balancer,ishomedom,balnum);
    }
    balancerChange(balnum,baltotal,'change',prevbalancer,balancer);
    return;
}

function showSpares(balancer,ishomedom,balnum) {
    var alltargets = new Array('$alltargets');
    var insttypes = new Array('$allinsttypes');
    var offloadtypes = new Array('primary','default');

    document.getElementById('loadbalancing_targets_'+balnum).style.display='block';
    document.getElementById('loadbalancing_disabled_'+balnum).style.display='none';
 
    for (var i=0; i<offloadtypes.length; i++) {
        var count = 0;
        for (var j=0; j<alltargets.length; j++) {
            if (alltargets[j] != balancer) {
                var item = document.getElementById('loadbalancing_target_'+balnum+'_'+offloadtypes[i]+'_'+count);
                item.value = alltargets[j];
                item.style.textAlign='left';
                item.style.textFace='normal';
                document.getElementById('loadbalancing_targettxt_'+balnum+'_'+offloadtypes[i]+'_'+count).innerHTML = alltargets[j];
                if (currBalancers.indexOf(alltargets[j]) == -1) {
                    item.disabled = '';
                } else {
                    item.disabled = 'disabled';
                    item.checked = false;
                }
                count ++;
            }
        }
    }
    for (var k=0; k<insttypes.length; k++) {
        if ((insttypes[k] == '_LC_external') || (insttypes[k] == '_LC_internetdom')) {
            if (ishomedom == 1) {
                document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='block';
                document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='block';
            } else {
                document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='none';
                document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='none';
            }
        } else {
            document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='block';
            document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='block';
        }
        if ((insttypes[k] != '_LC_external') && 
            ((insttypes[k] != '_LC_internetdom') ||
             ((insttypes[k] == '_LC_internetdom') && (ishomedom == 1)))) {
            var item = document.getElementById('loadbalancing_singleserver_'+balnum+'_'+insttypes[k]);
            item.options.length = 0;
            item.options[0] = new Option("","",true,true);
            var idx = 0;
            for (var m=0; m<alltargets.length; m++) {
                if ((currBalancers.indexOf(alltargets[m]) == -1) && (alltargets[m] != balancer)) {
                    idx ++;
                    item.options[idx] = new Option(alltargets[m],alltargets[m],false,false);
                }
            }
        }
    }
    return;
}

function hideSpares(balnum) {
    var alltargets = new Array('$alltargets');
    var insttypes = new Array('$allinsttypes');
    var offloadtypes = new Array('primary','default');

    document.getElementById('loadbalancing_targets_'+balnum).style.display='none';
    document.getElementById('loadbalancing_disabled_'+balnum).style.display='block';

    var total = alltargets.length - 1;
    for (var i=0; i<offloadtypes; i++) {
        for (var j=0; j<total; j++) {
           document.getElementById('loadbalancing_target_'+balnum+'_'+offloadtypes[i]+'_'+j).checked = false;
           document.getElementById('loadbalancing_target_'+balnum+'_'+offloadtypes[i]+'_'+j).value = '';
           document.getElementById('loadbalancing_targettxt_'+balnum+'_'+offloadtypes[i]+'_'+j).innerHTML = '';
        }
    }
    for (var k=0; k<insttypes.length; k++) {
        document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='none';
        document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='none';
        if (insttypes[k] != '_LC_external') {
            document.getElementById('loadbalancing_singleserver_'+balnum+'_'+insttypes[k]).length = 0;
            document.getElementById('loadbalancing_singleserver_'+balnum+'_'+insttypes[k]).options[0] = new Option("","",true,true);
        }
    }
    return;
}

function checkOffloads(item,balnum,type) {
    var alltargets = new Array('$alltargets');
    var offloadtypes = new Array('primary','default');
    if (item.checked) {
        var total = alltargets.length - 1;
        var other;
        if (type == offloadtypes[0]) {
            other = offloadtypes[1];
        } else {
            other = offloadtypes[0];
        }
        for (var i=0; i<total; i++) {
            var server = document.getElementById('loadbalancing_target_'+balnum+'_'+other+'_'+i).value;
            if (server == item.value) {
                if (document.getElementById('loadbalancing_target_'+balnum+'_'+other+'_'+i).checked) {
                    document.getElementById('loadbalancing_target_'+balnum+'_'+other+'_'+i).checked = false;
                }
            }
        }
    }
    return;
}

function singleServerToggle(balnum,type) {
    var offloadtoSelIdx = document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).selectedIndex;
    if (offloadtoSelIdx == 0) {
        document.getElementById('loadbalancing_rules_'+balnum+'_'+type+'_0').checked = true;
        document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '';

    } else {
        document.getElementById('loadbalancing_rules_'+balnum+'_'+type+'_2').checked = true;
        document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '$select';
    }
    return;
}

function balanceruleChange(formname,balnum,type) {
    if (type == '_LC_external') {
        return;
    }
    var typesRules = getIndicesByName(formname,'loadbalancing_rules_'+balnum+'_'+type);
    for (var i=0; i<typesRules.length; i++) {
        if (formname.elements[typesRules[i]].checked) {
            if (formname.elements[typesRules[i]].value != 'specific') {
                document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).selectedIndex = 0;
                document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '';
            } else {
                document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '$select';
            }
        }
    }
    return;
}

function balancerDeleteChange(balnum) {
    var hostitem = document.getElementById('loadbalancing_lonhost_'+balnum);
    var baltotal = document.getElementById('loadbalancing_total').value;
    var addtarget;
    var removetarget;
    var action = 'delete';
    if (document.getElementById('loadbalancing_delete_'+balnum)) {
        var lonhost = hostitem.value;
        var currIdx = currBalancers.indexOf(lonhost);
        if (document.getElementById('loadbalancing_delete_'+balnum).checked) {
            if (currIdx != -1) {
                currBalancers.splice(currIdx,1);
            }
            addtarget = lonhost;
        } else {
            if (currIdx == -1) {
                currBalancers.push(lonhost);
            }
            removetarget = lonhost;
            action = 'undelete';
        }
        balancerChange(balnum,baltotal,action,addtarget,removetarget);
    }
    return;
}

function balancerChange(balnum,baltotal,action,addtarget,removetarget) {
    if (baltotal > 1) {
        var offloadtypes = new Array('primary','default');
        var alltargets = new Array('$alltargets');
        var insttypes = new Array('$allinsttypes');
        for (var i=0; i<baltotal; i++) {
            if (i != balnum) {
                for (var j=0; j<offloadtypes.length; j++) {
                    var total = alltargets.length - 1;
                    for (var k=0; k<total; k++) {
                        var serveritem = document.getElementById('loadbalancing_target_'+i+'_'+offloadtypes[j]+'_'+k);
                        var server = serveritem.value;
                        if ((action == 'delete') || (action == 'change' && addtarget != ''))  {
                            if (server == addtarget) {
                                serveritem.disabled = '';
                            }
                        }
                        if ((action == 'undelete') || (action == 'change' && removetarget != '')) {
                            if (server == removetarget) {
                                serveritem.disabled = 'disabled';
                                serveritem.checked = false;
                            }
                        }
                    }
                }
                for (var j=0; j<insttypes.length; j++) {
                    if (insttypes[j] != '_LC_external') {
                        if (document.getElementById('loadbalancing_singleserver_'+i+'_'+insttypes[j])) {
                            var singleserver = document.getElementById('loadbalancing_singleserver_'+i+'_'+insttypes[j]);
                            var currSel = singleserver.selectedIndex;
                            var currVal = singleserver.options[currSel].value;
                            if ((action == 'delete') || (action == 'change' && addtarget != '')) {
                                var numoptions = singleserver.options.length;
                                var needsnew = 1;
                                for (var k=0; k<numoptions; k++) {
                                    if (singleserver.options[k] == addtarget) {
                                        needsnew = 0;
                                        break;
                                    }
                                }
                                if (needsnew == 1) {
                                    singleserver.options[numoptions] = new Option(addtarget,addtarget,false,false);
                                }
                            }
                            if ((action == 'undelete') || (action == 'change' && removetarget != '')) {
                                singleserver.options.length = 0;
                                if ((currVal) && (currVal != removetarget)) {
                                    singleserver.options[0] = new Option("","",false,false);
                                } else {
                                    singleserver.options[0] = new Option("","",true,true);
                                }
                                var idx = 0;
                                for (var m=0; m<alltargets.length; m++) {
                                    if (currBalancers.indexOf(alltargets[m]) == -1) {
                                        idx ++;
                                        if (currVal == alltargets[m]) {
                                            singleserver.options[idx] = new Option(alltargets[m],alltargets[m],true,true);
                                        } else {
                                            singleserver.options[idx] = new Option(alltargets[m],alltargets[m],false,false);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    return;
}

// ]]>
</script>

END
}


sub new_spares_js {
    my @sparestypes = ('primary','default');
    my $types = join("','",@sparestypes);
    my $select = &mt('Select');
    return <<"END";

<script type="text/javascript">
// <![CDATA[

function updateNewSpares(formname,lonhost) {
    var types = new Array('$types');
    var include = new Array();
    var exclude = new Array();
    for (var i=0; i<types.length; i++) {
        var spareboxes = getIndicesByName(formname,'spare_'+types[i]+'_'+lonhost);
        for (var j=0; j<spareboxes.length; j++) {
            if (formname.elements[spareboxes[j]].checked) {
                exclude.push(formname.elements[spareboxes[j]].value);
            } else {
                include.push(formname.elements[spareboxes[j]].value);
            }
        }
    }
    for (var i=0; i<types.length; i++) {
        var newSpare = document.getElementById('newspare_'+types[i]+'_'+lonhost);
        var selIdx = newSpare.selectedIndex;
        var currnew = newSpare.options[selIdx].value;
        var okSpares = new Array();
        for (var j=0; j<newSpare.options.length; j++) {
            var possible = newSpare.options[j].value;
            if (possible != '') {
                if (exclude.indexOf(possible) == -1) {
                    okSpares.push(possible);
                } else {
                    if (currnew == possible) {
                        selIdx = 0;
                    }
                }
            }
        }
        for (var k=0; k<include.length; k++) {
            if (okSpares.indexOf(include[k]) == -1) {
                okSpares.push(include[k]);
            }
        }
        okSpares.sort();
        newSpare.options.length = 0;
        if (selIdx == 0) {
            newSpare.options[0] = new Option("$select","",true,true);
        } else {
            newSpare.options[0] = new Option("$select","",false,false);
        }
        for (var m=0; m<okSpares.length; m++) {
            var idx = m+1;
            var selThis = 0;
            if (selIdx != 0) {
                if (okSpares[m] == currnew) {
                    selThis = 1;
                }
            }
            if (selThis == 1) {
                newSpare.options[idx] = new Option(okSpares[m],okSpares[m],true,true);
            } else {
                newSpare.options[idx] = new Option(okSpares[m],okSpares[m],false,false);
            }
        }
    }
    return;
}

function checkNewSpares(lonhost,type) {
    var newSpare = document.getElementById('newspare_'+type+'_'+lonhost);
    var chosen =  newSpare.options[newSpare.selectedIndex].value;
    if (chosen != '') {
        var othertype;
        var othernewSpare;
        if (type == 'primary') {
            othernewSpare = document.getElementById('newspare_default_'+lonhost);
        }
        if (type == 'default') {
            othernewSpare = document.getElementById('newspare_primary_'+lonhost);
        }
        if (othernewSpare.options[othernewSpare.selectedIndex].value == chosen) {
            othernewSpare.selectedIndex = 0;
        }
    }
    return;
}

// ]]>
</script>

END

}

sub common_domprefs_js {
    return <<"END";

<script type="text/javascript">
// <![CDATA[

function getIndicesByName(formname,item) {
    var group = new Array();
    for (var i=0;i<formname.elements.length;i++) {
        if (formname.elements[i].name == item) {
            group.push(formname.elements[i].id);
        }
    }
    return group;
}

// ]]>
</script>

END

}

sub recaptcha_js {
    my %lt = &captcha_phrases();
    return <<"END";

<script type="text/javascript">
// <![CDATA[

function updateCaptcha(caller,context) {
    var privitem;
    var pubitem;
    var privtext;
    var pubtext;
    var versionitem;
    var versiontext;
    if (document.getElementById(context+'_recaptchapub')) {
        pubitem = document.getElementById(context+'_recaptchapub');
    } else {
        return;
    }
    if (document.getElementById(context+'_recaptchapriv')) {
        privitem = document.getElementById(context+'_recaptchapriv');
    } else {
        return;
    }
    if (document.getElementById(context+'_recaptchapubtxt')) {
        pubtext = document.getElementById(context+'_recaptchapubtxt');
    } else {
        return;
    }
    if (document.getElementById(context+'_recaptchaprivtxt')) {
        privtext = document.getElementById(context+'_recaptchaprivtxt');
    } else {
        return;
    }
    if (document.getElementById(context+'_recaptchaversion')) {
        versionitem = document.getElementById(context+'_recaptchaversion');
    } else {
        return;
    }
    if (document.getElementById(context+'_recaptchavertxt')) {
        versiontext = document.getElementById(context+'_recaptchavertxt');
    } else {
        return;
    }
    if (caller.checked) {
        if (caller.value == 'recaptcha') {
            pubitem.type = 'text';
            privitem.type = 'text';
            pubitem.size = '40';
            privitem.size = '40';
            pubtext.innerHTML = "$lt{'pub'}";
            privtext.innerHTML = "$lt{'priv'}";
            versionitem.type = 'text';
            versionitem.size = '3';
            versiontext.innerHTML = "$lt{'ver'}";
        } else {
            pubitem.type = 'hidden';
            privitem.type = 'hidden';
            versionitem.type = 'hidden';
            pubtext.innerHTML = '';
            privtext.innerHTML = '';
            versiontext.innerHTML = '';
        }
    }
    return;
}

// ]]>
</script>

END

}

sub toggle_display_js {
    return <<"END";

<script type="text/javascript">
// <![CDATA[

function toggleDisplay(domForm,caller) {
    if (document.getElementById(caller)) {
        var divitem = document.getElementById(caller);
        var optionsElement = domForm.coursecredits;
        var checkval = 1;
        var dispval = 'block';
        var selfcreateRegExp = /^cancreate_emailverified/;
        if (caller == 'emailoptions') {
            optionsElement = domForm.cancreate_email;
        }
        if (caller == 'studentsubmission') {
            optionsElement = domForm.postsubmit;
        }
        if (caller == 'cloneinstcode') {
            optionsElement = domForm.canclone;
            checkval = 'instcode';
        }
        if (selfcreateRegExp.test(caller)) {
            optionsElement = domForm.elements[caller];
            checkval = 'other';
            dispval = 'inline'
        }
        if (optionsElement.length) {
            var currval;
            for (var i=0; i<optionsElement.length; i++) {
                if (optionsElement[i].checked) {
                   currval = optionsElement[i].value;
                }
            }
            if (currval == checkval) {
                divitem.style.display = dispval;
            } else {
                divitem.style.display = 'none';
            }
        }
    }
    return;
}

// ]]>
</script>

END

}

sub captcha_phrases {
    return &Apache::lonlocal::texthash (
                 priv => 'Private key',
                 pub  => 'Public key',
                 original  => 'original (CAPTCHA)',
                 recaptcha => 'successor (ReCAPTCHA)',
                 notused   => 'unused',
                 ver => 'ReCAPTCHA version (1 or 2)',
    );
}

sub devalidate_remote_domconfs {
    my ($dom,$cachekeys) = @_;
    return unless (ref($cachekeys) eq 'HASH');
    my %servers = &Apache::lonnet::internet_dom_servers($dom);
    my %thismachine;
    map { $thismachine{$_} = 1; } &Apache::lonnet::current_machine_ids();
    my @posscached = ('domainconfig','domdefaults','ltitools','usersessions',
                      'directorysrch','passwdconf','cats','proxyalias','proxysaml',
                      'ipaccess');
    my %cache_by_lonhost;
    if (exists($cachekeys->{'samllanding'})) {
        if (ref($cachekeys->{'samllanding'}) eq 'HASH') {
            my %landing = %{$cachekeys->{'samllanding'}};
            my %domservers = &Apache::lonnet::get_servers($dom);
            if (keys(%domservers)) {
                foreach my $server (keys(%domservers)) {
                    my @cached;
                    next if ($thismachine{$server});
                    if ($landing{$server}) {
                        push(@cached,&escape('samllanding').':'.&escape($server));
                    }
                    if (@cached) {
                        $cache_by_lonhost{$server} = \@cached;
                    }
                }
            }
        }
    }
    if (keys(%servers)) {
        foreach my $server (keys(%servers)) {
            next if ($thismachine{$server});
            my @cached;
            foreach my $name (@posscached) {
                if ($cachekeys->{$name}) {
                    if (($name eq 'proxyalias') || ($name eq 'proxysaml')) {
                        if (ref($cachekeys->{$name}) eq 'HASH') {
                            foreach my $key (keys(%{$cachekeys->{$name}})) {
                                push(@cached,&escape($name).':'.&escape($key));
                            }
                        }
                    } else {
                        push(@cached,&escape($name).':'.&escape($dom));
                    }
                }
            }
            if ((exists($cache_by_lonhost{$server})) &&
                (ref($cache_by_lonhost{$server}) eq 'ARRAY')) {
                push(@cached,@{$cache_by_lonhost{$server}});
            }
            if (@cached) {
                &Apache::lonnet::remote_devalidate_cache($server,\@cached);
            }
        }
    }
    return;
}

1;

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