--- loncom/auth/lonroles.pm 2000/09/29 14:36:30 1.6 +++ loncom/auth/lonroles.pm 2006/06/26 21:41:09 1.160 @@ -1,279 +1,1164 @@ # The LearningOnline Network with CAPA # User Roles Screen -# (Directory Indexer -# (Login Screen -# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer) -# 11/23 Gerd Kortemeyer) -# 1/14,03/06,06/01,07/22,07/24,07/25,09/04,09/06,09/28,09/29 Gerd Kortemeyer # +# $Id: lonroles.pm,v 1.160 2006/06/26 21:41:09 albertel 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/ +# +### + package Apache::lonroles; use strict; -use Apache::lonnet(); +use Apache::lonnet; +use Apache::lonuserstate(); use Apache::Constants qw(:common); use Apache::File(); - -sub handler { - my $r = shift; - $r->content_type('text/html'); +use Apache::lonmenu; +use Apache::loncommon; +use Apache::lonhtmlcommon; +use Apache::lonannounce; +use Apache::lonlocal; +use Apache::lonpageflip(); +use GDBM_File; +use LONCAPA; + + +sub redirect_user { + my ($r,$title,$url,$msg,$launch_nav) = @_; + $msg = $title if (! defined($msg)); + &Apache::loncommon::content_type($r,'text/html'); + &Apache::loncommon::no_cache($r); + $r->send_http_header; + my $swinfo=&Apache::lonmenu::rawconfig(); + my $navwindow; + if ($launch_nav eq 'on') { + $navwindow.=&Apache::lonnavmaps::launch_win('now',undef,undef, + ($url =~ m-^/adm/whatsnew-)); + } else { + $navwindow.=&Apache::lonnavmaps::close(); + } + my $start_page = &Apache::loncommon::start_page('Switching Role',undef, + {'redirect' => [1,$url],}); + my $end_page = &Apache::loncommon::end_page(); + +# Note to style police: +# This must only replace the spaces, nothing else, or it bombs elsewhere. + $url=~s/ /\%20/g; + $r->print(< +$swinfo + +$navwindow +

$msg

+$end_page +ENDREDIR + return; +} + +sub error_page { + my ($r,$error,$dest)=@_; + &Apache::loncommon::content_type($r,'text/html'); + &Apache::loncommon::no_cache($r); $r->send_http_header; return OK if $r->header_only; + $r->print(&Apache::loncommon::start_page('Problems during Course Initialization'). + ''. + '

'.&mt('The following problems occurred:'). + $error. + '


'.&mt('Continue').''. + &Apache::loncommon::end_page()); +} -# ---------------------------------------------------------------- Print Header - $r->print(< - -LON-CAPA User Roles - - -ENDHEADER +sub handler { + + my $r = shift; my $now=time; - my $then=$ENV{'user.login.time'}; + my $then=$env{'user.login.time'}; my $envkey; + my %dcroles = (); + my $numdc = &check_fordc(\%dcroles,$then); + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}); # ================================================================== Roles Init + if ($env{'form.selectrole'}) { + if ($env{'form.newrole'}) { + $env{'form.'.$env{'form.newrole'}}=1; + } + if ($env{'request.course.id'}) { + my %temp=('logout_'.$env{'request.course.id'} => time); + &Apache::lonnet::put('email_status',\%temp); + &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'}); + } + &Apache::lonnet::appenv("request.course.id" => '', + "request.course.fn" => '', + "request.course.uri" => '', + "request.course.sec" => '', + "request.role" => 'cm', + "request.role.adv" => $env{'user.adv'}, + "request.role.domain" => $env{'user.domain'}); + +# Check if user is a DC trying to enter a course and needs privs to be created + if ($numdc > 0) { + foreach my $envkey (keys %env) { + if (my ($domain,$coursenum) = + ($envkey =~ m-^form\.cc\./(\w+)/(\w+)$-)) { + if ($dcroles{$domain}) { + &check_privs($domain,$coursenum,$then,$now); + } + last; + } + } + } - if ($ENV{'form.selectrole'}) { - foreach $envkey (keys %ENV) { - if ($envkey=~/^user\.role\./) { - my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey); - my $where=join('.',@pwhere); - my $trolecode=$role.'.'.$where; - if ($ENV{'form.'.$trolecode}) { - my ($tstart,$tend)=split(/\./,$ENV{$envkey}); - my $tstatus='is'; - if ($tstart) { - if ($tstart>$then) { - $tstatus='future'; - } - } - if ($tend) { - if ($tend<$then) { $tstatus='expired'; } - if ($tend>$now) { $tstatus='will_not'; } - } - if ($tstatus eq 'is') { - &Apache::lonnet::appenv('request.role' => $trolecode); - - if ($where=~/\.course$/) { -# $r->print( -# &Apache::lonuserstate::readmap('/res/msu/korte/foo.course','phy231',$fn). - } - - $r->print("Yeah!"); - - } - } - } + foreach $envkey (keys %env) { + next if ($envkey!~/^user\.role\./); + my ($where,$trolecode,$role,$tstatus,$tend,$tstart); + &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); + if ($env{'form.'.$trolecode}) { + if ($tstatus eq 'is') { + $where=~s/^\///; + my ($cdom,$cnum,$csec)=split(/\//,$where); +# check for course groups + my %coursegroups = &Apache::lonnet::get_active_groups( + $env{'user.domain'},$env{'user.name'},$cdom, $cnum); + my $cgrps = join(':',keys(%coursegroups)); + +# store role if recent_role list being kept + if ($env{'environment.recentroles'}) { + my %frozen_roles = + &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'}); + &Apache::lonhtmlcommon::store_recent('roles', + $trolecode,' ',$frozen_roles{$trolecode}); + } + + +# check for keyed access + if (($role eq 'st') && + ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) { +# who is key authority? + my $authdom=$cdom; + my $authnum=$cnum; + if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) { + ($authnum,$authdom)= + split(/\W/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'}); + } +# check with key authority + unless (&Apache::lonnet::validate_access_key( + $env{'environment.key.'.$cdom.'_'.$cnum}, + $authdom,$authnum)) { +# there is no valid key + if ($env{'form.newkey'}) { +# student attempts to register a new key + &Apache::loncommon::content_type($r,'text/html'); + &Apache::loncommon::no_cache($r); + $r->send_http_header; + my $swinfo=&Apache::lonmenu::rawconfig(); + my $start_page=&Apache::loncommon::start_page + ('Verifying Access Key to Unlock this Course'); + my $end_page=&Apache::loncommon::end_page(); + my $buttontext=&mt('Enter Course'); + my $message=&mt('Successfully registered key'); + my $assignresult= + &Apache::lonnet::assign_access_key( + $env{'form.newkey'}, + $authdom,$authnum, + $cdom,$cnum, + $env{'user.domain'}, + $env{'user.name'}, + 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '. + $trolecode); + unless ($assignresult eq 'ok') { + $assignresult=~s/^error\:\s*//; + $message=&mt($assignresult). + '
'. + &mt('Logout').''; + $buttontext=&mt('Re-Enter Key'); + } + $r->print(< +$swinfo + +
+ + +$message
+ +
+$end_page +ENDENTEREDKEY + return OK; + } else { +# print form to enter a new key + &Apache::loncommon::content_type($r,'text/html'); + &Apache::loncommon::no_cache($r); + $r->send_http_header; + my $swinfo=&Apache::lonmenu::rawconfig(); + my $start_page=&Apache::loncommon::start_page + ('Enter Access Key to Unlock this Course'); + my $end_page=&Apache::loncommon::end_page(); + $r->print(< +$swinfo + +
+ + + + +
+$end_page +ENDENTERKEY + return OK; + } + } + } + &Apache::lonnet::log($env{'user.domain'}, + $env{'user.name'}, + $env{'user.home'}, + "Role ".$trolecode); + + &Apache::lonnet::appenv( + 'request.role' => $trolecode, + 'request.role.domain' => $cdom, + 'request.course.sec' => $csec, + 'request.course.groups' => $cgrps); + my $tadv=0; + + if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) { + my $msg; + my ($furl,$ferr)= + &Apache::lonuserstate::readmap($cdom.'/'.$cnum); + if (($env{'form.orgurl'}) && + ($env{'form.orgurl'}!~/^\/adm\/flip/)) { + my $dest=$env{'form.orgurl'}; + if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } + &Apache::lonnet::appenv('request.role.adv'=>$tadv); + if (($ferr) && ($tadv)) { + &error_page($r,$ferr,$dest); + } else { + $r->internal_redirect($dest); + } + return OK; + } else { + my $type = 'Course/Group'; + if (!$env{'request.course.id'}) { + $type = &Apache::loncommon::course_type(); + &Apache::lonnet::appenv( + "request.course.id" => $cdom.'_'.$cnum); + $furl='/adm/roles?tryagain=1'; + $msg= + '

'. + &mt('Could not initialize '.lc($type).' at this time.'). + '

'.&mt('Please try again.').'

'.$ferr; + } + if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } + &Apache::lonnet::appenv('request.role.adv'=>$tadv); + + if (($ferr) && ($tadv)) { + &error_page($r,$ferr,$furl); + } else { + # Check to see if the user is a CC entering a course + # for the first time + my (undef, undef, $role, $courseid) = split(/\./, $envkey); + if (substr($courseid, 0, 1) eq '/') { + $courseid = substr($courseid, 1); + } + $courseid =~ s/\//_/; + if ($role eq 'cc' && $env{'course.' . $courseid . + '.course.helper.not.run'}) { + $furl = "/adm/helper/course.initialization.helper"; + # Send the user to the course they selected + } elsif ($env{'request.course.id'}) { + if (&Apache::lonnet::allowed('whn', + $env{'request.course.id'}) + || &Apache::lonnet::allowed('whn', + $env{'request.course.id'}.'/' + .$env{'request.course.sec'}) + ) { + my $startpage = &courseloadpage($courseid); + unless ($startpage eq 'firstres') { + $msg = &mt('Entering '.lc($type).' ....'); + &redirect_user($r,&mt('New in course'), + '/adm/whatsnew?refpage=start',$msg, + $env{'environment.remotenavmap'}); + return OK; + } + } + } +# Are we allowed to look at the first resource? + if (!&Apache::lonnet::allowed('bre',$furl)) { +# Guess not ... + $furl=&Apache::lonpageflip::first_accessible_resource(); + } + $msg = &mt('Entering '.lc($type).' ...'); + &redirect_user($r,&mt('Entering '.$type), + $furl,$msg, + $env{'environment.remotenavmap'}); + } + return OK; + } + } + # + # Send the user to the construction space they selected + if ($role =~ /^(au|ca|aa)$/) { + my $redirect_url = '/priv/'; + if ($role eq 'au') { + $redirect_url.=$env{'user.name'}; + } else { + $where =~ /\/(.*)$/; + $redirect_url .= $1; + } + $redirect_url .= '/'; + &redirect_user($r,&mt('Entering Construction Space'), + $redirect_url); + return OK; + } + if ($role eq 'dc') { + my $redirect_url = '/adm/menu/'; + &redirect_user($r,&mt('Loading Domain Coordinator Menu'), + $redirect_url); + return OK; + } + } + } } - - $r->print('

Role not active

'); - return OK; } + + # =============================================================== No Roles Init -# ------------------------------------------ Get Error Message from Environment + &Apache::loncommon::content_type($r,'text/html'); + &Apache::loncommon::no_cache($r); + $r->send_http_header; + return OK if $r->header_only; - my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'}); - $r->log_reason( - "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn); + my $swinfo=&Apache::lonmenu::rawconfig(); + my $start_page=&Apache::loncommon::start_page('User Roles'); + my $standby=&mt('Role selected. Please stand by.'); + $standby=~s/\n/\\n/g; + my $helptag='
'.&Apache::loncommon::help_open_menu('','General Intro','General_Intro','',1,undef,undef,undef,undef,,&mt("Click here for help")).'
'; + $r->print(< + +ENDHEADER -# ---------------------------------------------------------------- Who is this? +# ------------------------------------------ Get Error Message from Environment - my $advanced=0; - foreach $envkey (keys %ENV) { - if ($envkey=~/^user\.role\./) { - my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey); - if ($role ne 'st') { $advanced=1; } - } + my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'}); + if ($env{'user.error.msg'}) { + $r->log_reason( + "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn); } +# ------------------------------------------------- Can this user re-init, etc? + + my $advanced=$env{'user.adv'}; + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']); + my $tryagain=$env{'form.tryagain'}; + # -------------------------------------------------------- Generate Page Output # --------------------------------------------------------------- Error Header? if ($error) { $r->print("

LON-CAPA Access Control

"); - $r->print("
Access  : ".
+        $r->print("
Access  : ".
                   Apache::lonnet::plaintext($priv)."\n");
-        $r->print("Resource: $fn\n");
-        $r->print("Action  : $msg\n
");
+        $r->print("Resource: ".&Apache::lonenc::check_encrypt($fn)."\n");
+        $r->print("Action  : $msg\n
"); + my $url=$fn; + my $last; + if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', + &GDBM_READER(),0640)) { + $last=$hash{'last_known'}; + untie(%hash); + } + if ($last) { $fn.='?symb='.&escape($last); } + + &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.', + &Apache::lonenc::check_encrypt($fn)); } else { - $r->print("

LON-CAPA User Roles

"); + if ($env{'user.error.msg'}) { + $r->print( + '

'. + &mt('You need to choose another user role or enter a specific course for this function').'

'); + } } # -------------------------------------------------------- Choice or no choice? if ($nochoose) { - if ($advanced) { - $r->print("

Assigned User Roles

\n"); - } else { - $r->print("

Sorry ...

\nThis resource might be part of"); - if ($ENV{'request.course.id'}) { - $r->print(' another'); - } else { - $r->print(' a certain'); - } - $r->print(' course.'); - return OK; - } + $r->print("

".&mt('Sorry ...')."

\n". + &mt('This action is currently not authorized.'). + &Apache::loncommon::end_page()); + return OK; } else { if ($advanced) { - $r->print("

Select a User Role

\n"); - } else { - $r->print("

Enter a Course

\n"); + $r->print(&mt("Your home server is "). + $Apache::lonnet::hostname{&Apache::lonnet::homeserver + ($env{'user.name'},$env{'user.domain'})}. + "
\n"); + $r->print(&mt( + "Author and Co-Author roles are not available on servers other than their respective home servers.")); + } + if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) { + $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'}; } - $r->print('
'); - $r->print(''); - $r->print(''); + $r->print(''); + $r->print(''); + $r->print(''); + $r->print(''); } -# ----------------------------------------------------------------------- Table - $r->print(''); - unless ($nochoose) { $r->print(''); } - if ($advanced) { - $r->print(''. - ''."\n"); - } else { - $r->print(''."\n"); + if ($env{'user.adv'}) { + $r->print( + '
'); } - foreach $envkey (sort keys %ENV) { + my (%roletext,%sortrole,%roleclass); + my $countactive=0; + my $inrole=0; + my $possiblerole=''; + foreach $envkey (sort keys %env) { + my $button = 1; + my $switchserver=''; + my $roletext; + my $sortkey; if ($envkey=~/^user\.role\./) { - my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey); - my $where=join('.',@pwhere); - my $trolecode=$role.'.'.$where; - my ($tstart,$tend)=split(/\./,$ENV{$envkey}); - my $tremark=''; - my $tstatus='is'; - my $tpstart=' '; - my $tpend=' '; + my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont); + &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); + next if (!defined($role) || $role eq '' || $role =~ /^gr/); + $tremark=''; + $tpstart=' '; + $tpend=' '; + $tfont='#000000'; if ($tstart) { - if ($tstart>$then) { - $tstatus='future'; - if ($tstart<$now) { $tstatus='will'; } - } - $tpstart=localtime($tstart); + $tpstart=&Apache::lonlocal::locallocaltime($tstart); } if ($tend) { - if ($tend<$then) { $tstatus='expired'; } - if ($tend>$now) { $tstatus='will_not'; } - $tpend=localtime($tend); + $tpend=&Apache::lonlocal::locallocaltime($tend); } - if ($ENV{'request.role'} eq $trolecode) { + if ($env{'request.role'} eq $trolecode) { $tstatus='selected'; } my $tbg; - if ($tstatus eq 'is') { - $tbg='#77FF77'; - } elsif ($tstatus eq 'future') { - $tbg='#FFFF77'; - } elsif ($tstatus eq 'will') { - $tbg='#FFAA77'; - $tremark.='Active at next login. '; - } elsif ($tstatus eq 'expired') { - $tbg='#FF7777'; - } elsif ($tstatus eq 'will_not') { - $tbg='#AAFF77'; - $tremark.='Expired after logout. '; - } elsif ($tstatus eq 'selected') { - $tbg='#33FF33'; - $tremark.='Currently selected. '; - } - my $trole; - if ($role =~ /^cr\//) { - my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role); - $tremark.='
Defined by '.$rauthor.' at '.$rdomain.'.'; - $trole=$rrole; - } else { - $trole=Apache::lonnet::plaintext($role); - } - my $ttype; - my $twhere; - my ($tres,$tdom,$trest)=split(/\//,$where); - if ($trest) { - $ttype='Course'; - $twhere=$tdom.'/'.$trest; - } elsif ($tdom) { - $ttype='Domain'; - $twhere=$tdom; - } else { - $ttype='System'; - $twhere='/'; - } - - $r->print(''); - unless ($nochoose) { - if ($tstatus eq 'is') { - $r->print(''); + if (($tstatus eq 'is') || ($tstatus eq 'selected') || + ($env{'form.showall'})) { + if ($tstatus eq 'is') { + $tbg='#77FF77'; + $tfont='#003300'; + $possiblerole=$trolecode; + $countactive++; + } elsif ($tstatus eq 'future') { + $tbg='#FFFF77'; + $button=0; + } elsif ($tstatus eq 'will') { + $tbg='#FFAA77'; + $tremark.=&mt('Active at next login. '); + } elsif ($tstatus eq 'expired') { + $tbg='#FF7777'; + $tfont='#330000'; + $button=0; + } elsif ($tstatus eq 'will_not') { + $tbg='#AAFF77'; + $tremark.=&mt('Expired after logout. '); + } elsif ($tstatus eq 'selected') { + $tbg='#11CC55'; + $tfont='#002200'; + $inrole=1; + $countactive++; + $tremark.=&mt('Currently selected. '); + } + my $trole; + if ($role =~ /^cr\//) { + my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role); + if ($tremark) { $tremark.='
'; } + $tremark.=&mt('Defined by ').$rauthor. + &mt(' at ').$rdomain.'.'; + } + $trole=Apache::lonnet::plaintext($role); + my $ttype; + my $twhere; + my ($tdom,$trest,$tsection)= + split(/\//,Apache::lonnet::declutter($where)); + # First, Co-Authorship roles + if (($role eq 'ca') || ($role eq 'aa')) { + my $home = &Apache::lonnet::homeserver($trest,$tdom); + my $allowed=0; + my @ids=&Apache::lonnet::current_machine_ids(); + foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } } + if (!$allowed) { + $button=0; + $switchserver='otherserver='.$home.'&role='.$trolecode; + } + #next if ($home eq 'no_host'); + $home = $Apache::lonnet::hostname{$home}; + $ttype='Construction Space'; + $twhere=&mt('User').': '.$trest.'
'.&mt('Domain'). + ': '.$tdom.'
'. + ' '.&mt('Server').': '.$home; + $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; + $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/'); + $sortkey=$role."$trest:$tdom"; + } elsif ($role eq 'au') { + # Authors + my $home = &Apache::lonnet::homeserver + ($env{'user.name'},$env{'user.domain'}); + my $allowed=0; + my @ids=&Apache::lonnet::current_machine_ids(); + foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } } + if (!$allowed) { + $button=0; + $switchserver='otherserver='.$home.'&role='.$trolecode; + } + #next if ($home eq 'no_host'); + $home = $Apache::lonnet::hostname{$home}; + $ttype='Construction Space'; + $twhere=&mt('Domain').': '.$tdom.'
'.&mt('Server'). + ': '.$home; + $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; + $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/'); + $sortkey=$role; + } elsif ($trest) { + my $tcourseid=$tdom.'_'.$trest; + $ttype = &Apache::loncommon::course_type($tcourseid); + $trole = &Apache::lonnet::plaintext($role,$ttype); + if ($env{'course.'.$tcourseid.'.description'}) { + $twhere=$env{'course.'.$tcourseid.'.description'}; + $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; + unless ($twhere eq &mt('Currently not available')) { + $twhere.=' '. + &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). + ''; + } + } else { + my %newhash=&Apache::lonnet::coursedescription($tcourseid); + if (%newhash) { + $sortkey=$role."\0".$tdom."\0".$newhash{'description'}. + "\0".$envkey; + $twhere=$newhash{'description'}. + ' '. + &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). + ''; + $ttype = $newhash{'type'}; + $trole = &Apache::lonnet::plaintext($role,$ttype); + } else { + $twhere=&mt('Currently not available'); + $env{'course.'.$tcourseid.'.description'}=$twhere; + $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; + $ttype = 'Unavailable'; + } + } + if ($tsection) { + $twhere.='
'.&mt('Section/Group').': '.$tsection; + } + if ($role ne 'st') { $twhere.="
".&mt('Domain').":".$tdom; } + } elsif ($tdom) { + $ttype='Domain'; + $twhere=$tdom; + $sortkey=$role.$twhere; } else { - $r->print(''); + $ttype='System'; + $twhere=&mt('system wide'); + $sortkey=$role.$twhere; } - } - $r->print(''."\n"); + $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver); + $roletext{$envkey}=$roletext; + if (!$sortkey) {$sortkey=$twhere."\0".$envkey;} + $sortrole{$sortkey}=$envkey; + $roleclass{$envkey}=$ttype; + } } } +# No active roles + if ($countactive==0) { + if ($inrole) { + $r->print('

'.&mt('Currently no additional roles or courses').'

'); + } else { + $r->print('

'.&mt('Currently no active roles or courses').'

'); + } + $r->print(''.&Apache::loncommon::end_page()); + return OK; +# Is there only one choice? + } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) { + $r->print('

'.&mt('Please stand by.').'

'. + ''); + $r->print("\n"); + $r->rflush(); + $r->print(''); + $r->print(&Apache::loncommon::end_page()); + return OK; + } +# More than one possible role +# ----------------------------------------------------------------------- Table + unless (($advanced) || ($nochoose)) { + $r->print("

".&mt('Select a Course/Group to Enter')."

\n"); + } + $r->print('
 User RoleExtentStartEndRemark
Course
 '.$trole.''. - $ttype.''.$twhere.''.$tpstart. - ''.$tpend. - ''.$tremark.' 
'); + unless ($nochoose) { $r->print(''); } + $r->print(''."\n"); + my $doheaders=-1; + foreach my $type ('Domain','Construction Space','Course','Group','Unavailable','System') { + my $haverole=0; + foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) { + if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { + $haverole=1; + } + } + if ($haverole) { $doheaders++; } + } + + if ($env{'environment.recentroles'}) { + my %recent_roles = + &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'}); + my $output=''; + foreach (sort(keys(%recent_roles))) { + if (defined($roletext{'user.role.'.$_})) { + $output.=$roletext{'user.role.'.$_}; + if ($_ =~ m-dc\./(\w+)/- && $dcroles{$1}) { + $output .= &allcourses_row($1,'recent'); + } + } elsif ($numdc > 0) { + unless ($_ =~/^error\:/) { + $output.=&display_cc_role('user.role.'.$_); + } + } + } + if ($output) { + $r->print(""); + $r->print($output); + $r->print(""); + $doheaders ++; + } + } + + if ($numdc > 0) { + $r->print(&coursepick_jscript()); + $r->print(&Apache::loncommon::coursebrowser_javascript()); + } + foreach my $type ('Construction Space','Domain','Course','Group','Unavailable','System') { + my $output; + foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) { + if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { + $output.=$roletext{$sortrole{$which}}; + if ($sortrole{$which} =~ m-dc\./(\w+)/-) { + if ($dcroles{$1}) { + $output .= &allcourses_row($1,''); + } + } + } + } + if ($output) { + if ($doheaders > 0) { + $r->print("". + ""); + } + $r->print($output); + } + } + my $tremark=''; + my $tfont='#003300'; + if ($env{'request.role'} eq 'cm') { + $r->print(''); + $tremark=&mt('Currently selected. '); + $tfont='#002200'; + } else { + $r->print(''); + } + unless ($nochoose) { + if ($env{'request.role'} ne 'cm') { + $r->print(''); + } else { + $r->print(''); + } + } + $r->print(''."\n"); $r->print('
 '.&mt('User Role').''.&mt('Extent'). + ''.&mt('Start').''.&mt('End').'
". + &mt('Recent Roles')."
".&mt($type)."
 '.&mt('No role specified'). + ''.$tremark. + ' 
'); unless ($nochoose) { $r->print("\n"); } -# ------------------------------------------------------------ Priviledges Info - if ($advanced) { - $r->print('

Priviledges

'); - - foreach $envkey (sort keys %ENV) { - if ($envkey=~/^user\.priv\./) { - my ($dum1,$dum2,@pwhere)=split(/\./,$envkey); - my $where=join('.',@pwhere); - my $ttype; - my $twhere; - my ($tres,$tdom,$trest)=split(/\//,$where); - if ($trest) { - $ttype='Course'; - $twhere=$tdom.'/'.$trest; - } elsif ($tdom) { - $ttype='Domain'; - $twhere=$tdom; +# ------------------------------------------------------------ Privileges Info + if (($advanced) && (($env{'user.error.msg'}) || ($error))) { + $r->print('

Current Privileges

'); + + foreach $envkey (sort keys %env) { + if ($envkey=~/^user\.priv\.$env{'request.role'}\./) { + my $where=$envkey; + $where=~s/^user\.priv\.$env{'request.role'}\.//; + my $ttype; + my $twhere; + my ($tdom,$trest,$tsec)= + split(/\//,Apache::lonnet::declutter($where)); + if ($trest) { + if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') { + $ttype='Construction Space'; + $twhere='User: '.$trest.', Domain: '.$tdom; + } else { + $ttype= + &Apache::loncommon::course_type($tdom.'_'.$trest); + $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'}; + if ($tsec) { + $twhere.=' (Section: '.$tsec.')'; + } + } + } elsif ($tdom) { + $ttype='Domain'; + $twhere=$tdom; + } else { + $ttype='System'; + $twhere='/'; + } + $r->print("\n

".$ttype.': '.$twhere.'

    '); + foreach (sort split(/:/,$env{$envkey})) { + if ($_) { + my ($prv,$restr)=split(/\&/,$_); + my $trestr=''; + if ($restr ne 'F') { + my $i; + $trestr.=' ('; + for ($i=0;$iprint('
  • '. + Apache::lonnet::plaintext($prv).$trestr. + '
    • '); + } + } + $r->print('
'); + } + } + } + $r->print(&Apache::lonnet::getannounce()); + if ($advanced) { + $r->print('

This is LON-CAPA '. + $r->dir_config('lonVersion').'
'. + ''.&mt('Logout').'

'); + } + $r->print(&Apache::loncommon::end_page()); + return OK; +} + +sub role_status { + my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_; + my @pwhere = (); + if (exists($env{$rolekey}) && $env{$rolekey} ne '') { + (undef,undef,$$role,@pwhere)=split(/\./,$rolekey); + unless (!defined($$role) || $$role eq '') { + $$where=join('.',@pwhere); + $$trolecode=$$role.'.'.$$where; + ($$tstart,$$tend)=split(/\./,$env{$rolekey}); + $$tstatus='is'; + if ($$tstart && $$tstart>$then) { + $$tstatus='future'; + if ($$tstart<$now) { $$tstatus='will'; } + } + if ($$tend) { + if ($$tend<$then) { + $$tstatus='expired'; + } elsif ($$tend<$now) { + $$tstatus='will_not'; + } + } + } + } +} + +sub build_roletext { + my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_; + my $roletext=''; + my $is_dc=($trolecode =~ m/^dc\./); + my $rowspan=($is_dc) ? '' + : ' rowspan="2" '; + + unless ($nochoose) { + my $buttonname=$trolecode; + $buttonname=~s/\W//g; + if (!$button) { + if ($switchserver) { + $roletext.=''.&mt('Switch Server').''; } else { - $ttype='System'; - $twhere='/'; + $roletext.=(' '); } - $r->print("\n

".$ttype.': '.$twhere.'

    '); - map { - if ($_) { - my ($prv,$restr)=split(/\&/,$_); - my $trestr=''; - if ($restr ne 'F') { - my $i; - $trestr.=' ('; - for ($i=0;$iprint('
  • '.Apache::lonnet::plaintext($prv).$trestr. - '
    • '); - } - } sort split(/:/,$ENV{$envkey}); - $r->print('
'); - } - } - } -# -------------------------------------------------------------- Debug - remove - - $->print("

Debugging

\n"); - - foreach $envkey (sort keys %ENV) { - $r->print("$envkey ---- $ENV{$envkey}
"); + } elsif ($tstatus eq 'is') { + $roletext.=''; + } elsif ($tryagain) { + $roletext.= + ''; + } elsif ($advanced) { + $roletext.= + ''; + } else { + $roletext.=' '; + } } + $tremark.=&Apache::lonannounce::showday(time,1, + &Apache::lonannounce::readcalendar($tdom.'_'.$trest)); -# ------------------------------------------------------------------- End Debug + $roletext.=''.$trole. + ''.$twhere. + ''.$tpstart. + ''.$tpend. + ''; + if (!$is_dc) { + $roletext.=''.$tremark. + ' '."\n"; + } + return $roletext; +} - $r->print("\n"); - return OK; -} +sub check_privs { + my ($cdom,$cnum,$then,$now) = @_; + my $cckey = 'user.role.cc./'.$cdom.'/'.$cnum; + if ($env{$cckey}) { + my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont); + &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); + unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) { + &set_privileges($cdom,$cnum); + } + } else { + &set_privileges($cdom,$cnum); + } +} + +sub check_fordc { + my ($dcroles,$then) = @_; + my $numdc = 0; + if ($env{'user.adv'}) { + foreach my $envkey (sort keys %env) { + if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) { + my $dcdom = $1; + my $livedc = 1; + my ($tstart,$tend)=split(/\./,$env{$envkey}); + if ($tstart && $tstart>$then) { $livedc = 0; } + if ($tend && $tend <$then) { $livedc = 0; } + if ($livedc) { + $$dcroles{$dcdom} = $envkey; + $numdc++; + } + } + } + } + return $numdc; +} + +sub courselink { + my ($dcdom,$rowtype,$selecttype) = @_; + my $courseform=&Apache::loncommon::selectcourse_link + ('rolechoice','dccourse'.$rowtype.'_'.$dcdom, + 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'. + $dcdom,$dcdom,undef,$selecttype); + my $hiddenitems = ''. + ''. + ''. + ''; + return $courseform.$hiddenitems; +} + +sub coursepick_jscript { + my $verify_script = <<"END"; + +END + return $verify_script; +} + +sub processpick { + my $process_pick = <<"END"; + +END + return $process_pick; +} + +sub display_cc_role { + my $rolekey = shift; + my $roletext; + my $advanced = $env{'user.adv'}; + my $tryagain = $env{'form.tryagain'}; + unless ($rolekey =~/^error\:/) { + if ($rolekey =~ m-^user\.role.cc\./(\w+)/(\w+)$-) { + my $tcourseid = $1.'_'.$2; + my $trolecode = 'cc./'.$1.'/'.$2; + my $twhere; + my $ttype; + my $tbg='#77FF77'; + my $tfont='#003300'; + my %newhash=&Apache::lonnet::coursedescription($tcourseid); + if (%newhash) { + $twhere=$newhash{'description'}. + ' '. + &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont). + ''; + $ttype = $newhash{'type'}; + } else { + $twhere=&mt('Currently not available'); + $env{'course.'.$tcourseid.'.description'}=$twhere; + } + my $trole = &Apache::lonnet::plaintext('cc',$ttype); + $twhere.="
".&mt('Domain').":".$1; + $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,$twhere,'','','',1,''); + } + } + return ($roletext); +} + +sub allcourses_row { + my ($dcdom,$rowtype) = @_; + my $output = ''. + ' '; + foreach my $type ('Course','Group') { + my $selectlink = &courselink($dcdom,$rowtype,$type); + my $ccrole = &Apache::lonnet::plaintext('cc',$type); + $output.= ''.$ccrole.''. + ' '.$selectlink.''. + ' from '.&mt('Domain').' '.$dcdom.'
'; + } + $output .= ''."\n"; + return $output; +} + +sub recent_filename { + my $area=shift; + return 'nohist_recent_'.&escape($area); +} + +sub set_privileges { + my ($dcdom,$pickedcourse) = @_; + my $area = '/'.$dcdom.'/'.$pickedcourse; + my $role = 'cc'; + my $spec = $role.'.'.$area; + my %userroles = &Apache::lonnet::set_arearole($role,$area,'','',$dcdom,$env{'user.name'}); + my %ccrole = (); + &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area); + my ($author,$adv)= &Apache::lonnet::set_userprivs(\%userroles,\%ccrole); + &Apache::lonnet::appenv(%userroles); + &Apache::lonnet::log($env{'user.domain'}, + $env{'user.name'}, + $env{'user.home'}, + "Role ".$role); + &Apache::lonnet::appenv( + 'request.role' => $spec, + 'request.role.domain' => $dcdom, + 'request.course.sec' => ''); + my $tadv=0; + if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } + &Apache::lonnet::appenv('request.role.adv' => $tadv); +} + +sub courseloadpage { + my ($courseid) = @_; + my $startpage; + my %entry_settings = &Apache::lonnet::get('nohist_whatsnew', + [$courseid.':courseinit']); + my ($tmp) = %entry_settings; + unless ($tmp =~ /^error: 2 /) { + $startpage = $entry_settings{$courseid.':courseinit'}; + } + if ($startpage eq '') { + if (exists($env{'environment.course_init_display'})) { + $startpage = $env{'environment.course_init_display'}; + } + } + return $startpage; +} 1; __END__ + +=head1 NAME + +Apache::lonroles - User Roles Screen + +=head1 SYNOPSIS + +Invoked by /etc/httpd/conf/srm.conf: + + + PerlAccessHandler Apache::lonacc + SetHandler perl-script + PerlHandler Apache::lonroles + ErrorDocument 403 /adm/login + ErrorDocument 500 /adm/errorhandler + + +=head1 OVERVIEW + +=head2 Choosing Roles + +C is a handler that allows a user to switch roles in +mid-session. LON-CAPA attempts to work with "No Role Specified", the +default role that a user has before selecting a role, as widely as +possible, but certain handlers for example need specification which +course they should act on, etc. Both in this scenario, and when the +handler determines via C's C<&allowed> function that a certain +action is not allowed, C is used as error handler. This +allows the user to select another role which may have permission to do +what they were trying to do. C can also be accessed via the +B button in the Remote Control. + +=begin latex + +\begin{figure} +\begin{center} +\includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen} + \caption{\label{Sample_Roles_Screen}Sample Roles Screen} +\end{center} +\end{figure} + +=end latex + +=head2 Role Initialization + +The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C's C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role. + +=head1 INTRODUCTION + +This module enables a user to select what role he wishes to +operate under (instructor, student, teaching assistant, course +coordinator, etc). These roles are pre-established by the actions +of upper-level users. + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + +=head1 HANDLER SUBROUTINE + +This routine is called by Apache and mod_perl. + +=over 4 + +=item * + +Roles Initialization (yes/no) + +=item * + +Get Error Message from Environment + +=item * + +Who is this? + +=item * + +Generate Page Output + +=item * + +Choice or no choice + +=item * + +Table + +=item * + +Privileges + +=back + +=cut