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Diff for /loncom/auth/lonlogin.pm between versions 1.126 and 1.171

version 1.126, 2009/10/06 21:58:30 version 1.171, 2017/09/25 00:36:30
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # Login Screen  # Login Screen
 #  #
 # $Id$  # $Id$
 #  #
 # Copyright Michigan State University Board of Trustees  # Copyright Michigan State University Board of Trustees
 #  #
 # This file is part of the LearningOnline Network with CAPA (LON-CAPA).  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #  #
 # LON-CAPA is free software; you can redistribute it and/or modify  # 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  # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or  # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.  # (at your option) any later version.
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
 # You should have received a copy of the GNU General Public License  # You should have received a copy of the GNU General Public License
 # along with LON-CAPA; if not, write to the Free Software  # along with LON-CAPA; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #  #
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
 package Apache::lonlogin;  package Apache::lonlogin;
   
 use strict;  use strict;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File ();  use Apache::File ();
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonauth();  use Apache::lonauth();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::migrateuser();  use Apache::migrateuser();
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA;  use LONCAPA;
    use CGI::Cookie();
 sub handler {   
     my $r = shift;  sub handler {
       my $r = shift;
     &Apache::loncommon::get_unprocessed_cgi  
  (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},      &Apache::loncommon::get_unprocessed_cgi
       $ENV{'REDIRECT_QUERY_STRING'}),   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
  ['interface','username','domain','firsturl','localpath','localres',        $ENV{'REDIRECT_QUERY_STRING'}),
   'token','role','symb']);   ['interface','username','domain','firsturl','localpath','localres',
     if (!defined($env{'form.firsturl'})) {    'token','role','symb','iptoken']);
         &Apache::lonacc::get_posted_cgi($r,['firsturl']);      if (!defined($env{'form.firsturl'})) {
     }          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
       }
 # -- check if they are a migrating user  
     if (defined($env{'form.token'})) {  # -- check if they are a migrating user
  return &Apache::migrateuser::handler($r);      if (defined($env{'form.token'})) {
     }   return &Apache::migrateuser::handler($r);
       }
     &Apache::loncommon::no_cache($r);  
     &Apache::lonlocal::get_language_handle($r);  # For "public user" - remove any exising "public" cookie, as user really wants to log-in
     &Apache::loncommon::content_type($r,'text/html');      my ($handle,$lonidsdir,$expirepub,$userdom);
     $r->send_http_header;      unless ($r->header_only) {
     return OK if $r->header_only;          $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
           if ($handle ne '') {
               $lonidsdir=$r->dir_config('lonIDsDir');
 # Are we re-routing?              if ($handle=~/^publicuser\_/) {
     if (-e '/home/httpd/html/lon-status/reroute.txt') {                  unlink($r->dir_config('lonIDsDir')."/$handle.id");
  &Apache::lonauth::reroute($r);                  undef($handle);
  return OK;                  undef($userdom);
     }                  $expirepub = 1;
               }
           }
 # -------------------------------- Prevent users from attempting to login twice      }
     my $handle = &Apache::lonnet::check_for_valid_session($r);  
     if ($handle=~/^publicuser\_/) {      &Apache::loncommon::no_cache($r);
 # For "public user" - remove it, we apparently really want to login      &Apache::lonlocal::get_language_handle($r);
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      &Apache::loncommon::content_type($r,'text/html');
     } elsif ($handle ne '') {      if ($expirepub) {
 # Indeed, a valid token is found          my $c = new CGI::Cookie(-name    => 'lonPubID',
  my $start_page =                                   -value   => '',
     &Apache::loncommon::start_page('Already logged in');                                  -expires => '-10y',);
  my $end_page =           $r->header_out('Set-cookie' => $c);
     &Apache::loncommon::end_page();      } elsif (($handle eq '') && ($userdom ne '')) {
         my $dest = '/adm/roles';          my $c = new CGI::Cookie(-name    => 'lonID',
         if ($env{'form.firsturl'} ne '') {                                  -value   => '',
             $dest = $env{'form.firsturl'};                                   -expires => '-10y',);
         }          $r->headers_out->add('Set-cookie' => $c);
  $r->print(      }
                   $start_page      $r->send_http_header;
                  .'<h1>'.&mt('You are already logged in!').'</h1>'      return OK if $r->header_only;
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',  
                   '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'  
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'  # Are we re-routing?
                  .$end_page      my $londocroot = $r->dir_config('lonDocRoot');
                  );      if (-e "$londocroot/lon-status/reroute.txt") {
         return OK;   &Apache::lonauth::reroute($r);
     }   return OK;
       }
 # ---------------------------------------------------- No valid token, continue  
   #
  # ---------------------------- Not possible to really login to domain "public"  # If browser sent an old cookie for which the session file had been removed
     if ($env{'form.domain'} eq 'public') {  # check if configuration for user's domain has a portal URL set.  If so
  $env{'form.domain'}='';  # switch user's log-in to the portal.
  $env{'form.username'}='';  #
     }  
 # ----------------------------------------------------------- Process Interface      if (($handle eq '') && ($userdom ne '')) {
     $env{'form.interface'}=~s/\W//g;          my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
           if ($domdefaults{'portal_def'} =~ /^https?\:/) {
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};              my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
                                             {'redirect' => [0,$domdefaults{'portal_def'}],});
     my $iconpath=               my $end_page   = &Apache::loncommon::end_page();
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));              $r->print($start_page.$end_page);
               return OK;
     my $lonhost = $r->dir_config('lonHostID');          }
     my $domain = &Apache::lonnet::default_login_domain();      }
     my %domconfig = &Apache::loncommon::get_domainconf($domain);  
     if ($lonhost ne '') {      $env{'form.firsturl'} =~ s/(`)/'/g;
         if (ref($domconfig{login}) eq 'HASH') {  
             if (ref($domconfig{login}{loginvia}) eq 'HASH') {  # -------------------------------- Prevent users from attempting to login twice
                 if ($domconfig{login}{loginvia}{$lonhost}) {      if ($handle ne '') {
                     my $loginvia = $domconfig{login}{loginvia}{$lonhost};          &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
                     my %servers = &Apache::lonnet::get_servers($domain);   my $start_page =
                     if (($servers{$loginvia} ne '') && ($loginvia ne $lonhost)) {      &Apache::loncommon::start_page('Already logged in');
                         $r->print(&redirect_page($loginvia));   my $end_page =
                         return OK;      &Apache::loncommon::end_page();
                     }          my $dest = '/adm/roles';
                 }          if ($env{'form.firsturl'} ne '') {
             }              $dest = $env{'form.firsturl'};
         }          }
     }   $r->print(
                     $start_page
     if (($env{'form.domain'}) &&                    .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
  $domain=$env{'form.domain'};                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     }                   .$end_page
     my $role    = $r->dir_config('lonRole');                   );
     my $loadlim = $r->dir_config('lonLoadLim');          return OK;
     my $servadm = $r->dir_config('lonAdmEMail');      }
     my $tabdir  = $r->dir_config('lonTabDir');  
     my $include = $r->dir_config('lonIncludes');  # ---------------------------------------------------- No valid token, continue
     my $expire  = $r->dir_config('lonExpire');  
     my $version = $r->dir_config('lonVersion');  # ---------------------------- Not possible to really login to domain "public"
     my $host_name = &Apache::lonnet::hostname($lonhost);      if ($env{'form.domain'} eq 'public') {
    $env{'form.domain'}='';
 # --------------------------------------------- Default values for login fields   $env{'form.username'}='';
       }
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');  
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);  # ------ Is this page requested because /adm/migrateuser detected an IP change?
       my %sessiondata;
 # ---------------------------------------------------------- Determine own load      if ($env{'form.iptoken'}) {
     my $loadavg;          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
     {          unless ($sessiondata{'sessionserver'}) {
  my $loadfile=Apache::File->new('/proc/loadavg');              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
  $loadavg=<$loadfile>;              delete($env{'form.iptoken'});
     }          }
     $loadavg =~ s/\s.*//g;      }
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);  # ----------------------------------------------------------- Process Interface
     my $userloadpercent=&Apache::lonnet::userload();      $env{'form.interface'}=~s/\W//g;
   
 # ------------------------------------------------------- Do the load balancing      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     my $otherserver= &Apache::lonnet::absolute_url($host_name);          &Apache::loncommon::decode_user_agent();
     my $firsturl=  
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});      my $iconpath=
 # ---------------------------------------------------------- Are we overloaded?   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {  
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);      my $lonhost = $r->dir_config('lonHostID');
  if ($unloaded) { $otherserver=$unloaded; }      my $domain = &Apache::lonnet::default_login_domain();
     }      my $defdom = $domain;
       if ($lonhost ne '') {
 # ----------------------------------------------------------- Get announcements          unless ($sessiondata{'sessionserver'}) {
     my $announcements=&Apache::lonnet::getannounce();              my $redirect = &check_loginvia($domain,$lonhost);
 # -------------------------------------------------------- Set login parameters              if ($redirect) {
                   $r->print($redirect);
     my @hexstr=('0','1','2','3','4','5','6','7',                  return OK;
                 '8','9','a','b','c','d','e','f');              }
     my $lkey='';          }
     for (0..7) {      }
         $lkey.=$hexstr[rand(15)];  
     }      if (($sessiondata{'domain'}) &&
           (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     my $ukey='';          $domain=$sessiondata{'domain'};
     for (0..7) {      } elsif (($env{'form.domain'}) &&
         $ukey.=$hexstr[rand(15)];   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     }   $domain=$env{'form.domain'};
       }
     my $lextkey=hex($lkey);  
     if ($lextkey>2147483647) { $lextkey-=4294967296; }      my $role    = $r->dir_config('lonRole');
       my $loadlim = $r->dir_config('lonLoadLim');
     my $uextkey=hex($ukey);      my $uloadlim= $r->dir_config('lonUserLoadLim');
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      my $servadm = $r->dir_config('lonAdmEMail');
       my $tabdir  = $r->dir_config('lonTabDir');
 # -------------------------------------------------------- Store away log token      my $include = $r->dir_config('lonIncludes');
     my $tokenextras;      my $expire  = $r->dir_config('lonExpire');
     if ($env{'form.role'}) {      my $version = $r->dir_config('lonVersion');
         $tokenextras = '&role='.&escape($env{'form.role'});      my $host_name = &Apache::lonnet::hostname($lonhost);
     }  
     if ($env{'form.symb'}) {  # --------------------------------------------- Default values for login fields
         if (!$tokenextras) {     
             $tokenextras = '&';      my ($authusername,$authdomain);
         }      if ($sessiondata{'username'}) {
         $tokenextras .= '&symb='.&escape($env{'form.symb'});          $authusername=$sessiondata{'username'};
     }      } else {
     my $logtoken=Apache::lonnet::reply(          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
        'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,          $authusername=($env{'form.username'}?$env{'form.username'}:'');
        $lonhost);      }
       if ($sessiondata{'domain'}) {
 # ------------------- If we cannot talk to ourselves, we are in serious trouble          $authdomain=$sessiondata{'domain'};
       } else {
     if ($logtoken eq 'con_lost') {          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
         my $spares='';          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
  my $last;      }
         foreach my $hostid (sort  
     {  # ---------------------------------------------------------- Determine own load
  &Apache::lonnet::hostname($a) cmp      my $loadavg;
     &Apache::lonnet::hostname($b);      {
     }   my $loadfile=Apache::File->new('/proc/loadavg');
     keys(%Apache::lonnet::spareid)) {   $loadavg=<$loadfile>;
             next if ($hostid eq $lonhost);      }
     my $hostname = &Apache::lonnet::hostname($hostid);      $loadavg =~ s/\s.*//g;
     next if ($last eq $hostname);  
             $spares.='<br /><font size="+1"><a href="http://'.      my ($loadpercent,$userloadpercent);
                 $hostname.      if ($loadlim) {
                 '/adm/login?domain='.$authdomain.'">'.          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
                 $hostname.'</a>'.      }
                 ' '.&mt('(preferred)').'</font>'.$/;      if ($uloadlim) {
     $last=$hostname;          $userloadpercent=&Apache::lonnet::userload();
         }      }
 $spares.= '<br />';  
 my %all_hostnames = &Apache::lonnet::all_hostnames();      my $firsturl=
 foreach my $hostid (sort      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
     {  
  &Apache::lonnet::hostname($a) cmp  # ----------------------------------------------------------- Get announcements
     &Apache::lonnet::hostname($b);      my $announcements=&Apache::lonnet::getannounce();
     }  # -------------------------------------------------------- Set login parameters
     keys(%all_hostnames)) {  
     next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});      my @hexstr=('0','1','2','3','4','5','6','7',
     my $hostname = &Apache::lonnet::hostname($hostid);                  '8','9','a','b','c','d','e','f');
     next if ($last eq $hostname);      my $lkey='';
     $spares.='<br /><a href="http://'.      for (0..7) {
  $hostname.          $lkey.=$hexstr[rand(15)];
  '/adm/login?domain='.$authdomain.'">'.      }
  $hostname.'</a>';  
     $last=$hostname;      my $ukey='';
 }      for (0..7) {
 $r->print(          $ukey.=$hexstr[rand(15)];
    '<html>'      }
   .'<head><title>'  
   .&mt('The LearningOnline Network with CAPA')      my $lextkey=hex($lkey);
   .'</title></head>'      if ($lextkey>2147483647) { $lextkey-=4294967296; }
   .'<body bgcolor="#FFFFFF">'  
   .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'      my $uextkey=hex($ukey);
   .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'      if ($uextkey>2147483647) { $uextkey-=4294967296; }
   .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'  
   .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'  # -------------------------------------------------------- Store away log token
   .$spares      my $tokenextras;
   .'</body>'      if ($env{'form.role'}) {
   .'</html>'          $tokenextras = '&role='.&escape($env{'form.role'});
 );      }
 return OK;      if ($env{'form.symb'}) {
 }          if (!$tokenextras) {
               $tokenextras = '&';
 # ----------------------------------------------- Apparently we are in business          }
 $servadm=~s/\,/\<br \/\>/g;          $tokenextras .= '&symb='.&escape($env{'form.symb'});
       }
 # ----------------------------------------------------------- Front page design      if ($env{'form.iptoken'}) {
 my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);          if (!$tokenextras) {
 my $font=&Apache::loncommon::designparm('login.font',$domain);              $tokenextras = '&&';
 my $link=&Apache::loncommon::designparm('login.link',$domain);          }
 my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
 my $alink=&Apache::loncommon::designparm('login.alink',$domain);      }
 my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);      my $logtoken=Apache::lonnet::reply(
 my $logo=&Apache::loncommon::designparm('login.logo',$domain);         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
 my $img=&Apache::loncommon::designparm('login.img',$domain);         $lonhost);
 my $domainlogo=&Apache::loncommon::domainlogo($domain);  
 my $login=&Apache::loncommon::designparm('login.login',$domain);  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
 if ($login eq '') {  #    we are in serious trouble
 $login = $iconpath.'/'.&mt('userauthentication.gif');  
 }      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
 my $showbanner = 1;          if ($logtoken eq 'no_such_host') {
 my $showmainlogo = 1;              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
 if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {          }
     $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);          my $spares='';
 }   my $last;
 if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {          foreach my $hostid (sort
     $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);      {
 }   &Apache::lonnet::hostname($a) cmp
 my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);      &Apache::lonnet::hostname($b);
 my $showcoursecat =      }
 &Apache::loncommon::designparm('login.coursecatalog',$domain);      keys(%Apache::lonnet::spareid)) {
 my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);              next if ($hostid eq $lonhost);
 my $shownewuserlink =       my $hostname = &Apache::lonnet::hostname($hostid);
 &Apache::loncommon::designparm('login.newuser',$domain);      next if (($last eq $hostname) || ($hostname eq ''));
 my $now=time;              $spares.='<br /><font size="+1"><a href="http://'.
 my $js = (<<ENDSCRIPT);                  $hostname.
                   '/adm/login?domain='.$authdomain.'">'.
 <script type="text/javascript" language="JavaScript">                  $hostname.'</a>'.
 // <![CDATA[                  ' '.&mt('(preferred)').'</font>'.$/;
 function send()      $last=$hostname;
 {          }
 this.document.server.elements.uname.value          if ($spares) {
 =this.document.client.elements.uname.value;              $spares.= '<br />';
           }
 this.document.server.elements.udom.value          my %all_hostnames = &Apache::lonnet::all_hostnames();
 =this.document.client.elements.udom.value;          foreach my $hostid (sort
       {
 uextkey=this.document.client.elements.uextkey.value;   &Apache::lonnet::hostname($a) cmp
 lextkey=this.document.client.elements.lextkey.value;      &Apache::lonnet::hostname($b);
 initkeys();      }
       keys(%all_hostnames)) {
 this.document.server.elements.upass0.value              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
     =crypted(this.document.client.elements.upass$now.value.substr(0,15));              my $hostname = &Apache::lonnet::hostname($hostid);
 this.document.server.elements.upass1.value              next if (($last eq $hostname) || ($hostname eq ''));
     =crypted(this.document.client.elements.upass$now.value.substr(15,15));              $spares.='<br /><a href="http://'.
 this.document.server.elements.upass2.value               $hostname.
     =crypted(this.document.client.elements.upass$now.value.substr(30,15));               '/adm/login?domain='.$authdomain.'">'.
                $hostname.'</a>';
 this.document.client.elements.uname.value='';              $last=$hostname;
 this.document.client.elements.upass$now.value='';           }
            $r->print(
 this.document.server.submit();     '<html>'
 return false;    .'<head><title>'
 }    .&mt('The LearningOnline Network with CAPA')
 // ]]>    .'</title></head>'
 </script>    .'<body bgcolor="#FFFFFF">'
     .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
 ENDSCRIPT    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
     .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
 # --------------------------------------------------- Print login screen header          if ($spares) {
               $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
 my %add_entries = (                       .'</p>'
        bgcolor      => "$mainbg",                       .$spares);
        text         => "$font",          }
        link         => "$link",          $r->print('</body>'
        vlink        => "$vlink",                   .'</html>'
        alink        => "$alink",);          );
           return OK;
 $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,      }
        { 'redirect'       => [$expire,'/adm/roles'],   
  'add_entries' => \%add_entries,  # ----------------------------------------------- Apparently we are in business
  'only_body'   => 1,}));      $servadm=~s/\,/\<br \/\>/g;
   
 # ----------------------------------------------------------------------- Texts  # ----------------------------------------------------------- Front page design
       my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
 my %lt=&Apache::lonlocal::texthash(      my $font=&Apache::loncommon::designparm('login.font',$domain);
   'un'  => 'Username',      my $link=&Apache::loncommon::designparm('login.link',$domain);
   'pw'  => 'Password',      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
   'dom' => 'Domain',      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
   'perc' => 'percent',      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
   'load' => 'Server Load',      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
   'userload' => 'User Load',      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
   'catalog' => 'Course Catalog',      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
   'log' => 'Log in',      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
   'help' => 'Log-in Help',      my $img=&Apache::loncommon::designparm('login.img',$domain);
   'serv' => 'Server',      my $domainlogo=&Apache::loncommon::domainlogo($domain);
   'servadm' => 'Server Administration',      my $showbanner = 1;
   'helpdesk' => 'Contact Helpdesk',      my $showmainlogo = 1;
   'forgotpw' => 'Forgot password?',      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
   'newuser'  => 'New User?',          $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
   );      }
 # -------------------------------------------------- Change password field name      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
 my $forgotpw = &forgotpwdisplay(%lt);          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
 my $loginhelp = &loginhelpdisplay(%lt);      }
       my $showadminmail;
 # ---------------------------------------------------- Serve out DES JavaScript      my @possdoms = &Apache::lonnet::current_machine_domains();
 {      if (grep(/^\Q$domain\E$/,@possdoms)) {
 my $jsh=Apache::File->new($include."/londes.js");          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
 $r->print(<$jsh>);      }
 }      my $showcoursecat =
 # ---------------------------------------------------------- Serve rest of page          &Apache::loncommon::designparm('login.coursecatalog',$domain);
       my $shownewuserlink =
 $r->print(          &Apache::loncommon::designparm('login.newuser',$domain);
   '<div class="LC_loginpage_container">');      my $showhelpdesk =
           &Apache::loncommon::designparm('login.helpdesk',$domain);
 #      my $now=time;
 #  If the loadbalancing yielded just http:// because perhaps there's no loadbalancing?      my $js = (<<ENDSCRIPT);
 #  then just us a relative link to authenticate:  
 #  <script type="text/javascript" language="JavaScript">
   // <![CDATA[
 $r->print(<<ENDSERVERFORM);  function send()
 <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">  {
    <input type="hidden" name="logtoken" value="$logtoken" />  this.document.server.elements.uname.value
    <input type="hidden" name="serverid" value="$lonhost" />  =this.document.client.elements.uname.value;
    <input type="hidden" name="uname" value="" />  
    <input type="hidden" name="upass0" value="" />  this.document.server.elements.udom.value
    <input type="hidden" name="upass1" value="" />  =this.document.client.elements.udom.value;
    <input type="hidden" name="upass2" value="" />  
    <input type="hidden" name="udom" value="" />  uextkey=this.document.client.elements.uextkey.value;
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />  lextkey=this.document.client.elements.lextkey.value;
    <input type="hidden" name="localres" value="$env{'form.localres'}" />  initkeys();
   </form>  
 ENDSERVERFORM  if(this.document.server.action.substr(0,5) === 'http:'){
 my $coursecatalog;      this.document.server.elements.upass0.value
 if (($showcoursecat eq '') || ($showcoursecat)) {          =getCrypted(this.document.client.elements.upass$now.value);
     $coursecatalog = &coursecatalog_link($lt{'catalog'});  } else {
 }      this.document.server.elements.upass0.value
 my $newuserlink;          =this.document.client.elements.upass$now.value;
 if ($shownewuserlink) {  }
     $newuserlink = &newuser_link($lt{'newuser'}).'<br />';  
 }  this.document.client.elements.uname.value='';
 my $logintitle;  this.document.client.elements.upass$now.value='';
 if ($loginheader eq 'text') {  
     $logintitle ='<h2>'.$lt{'log'}.'</h2>';  this.document.server.submit();
 } else {  return false;
     $logintitle = '<img src="'.$login.'" alt="'.  }
                   &mt('User Authentication').'" />';  
 }  function enableInput() {
       this.document.client.elements.upass$now.removeAttribute("readOnly");
 my $noscript_warning='<noscript><span class="LC_warning"><b>'      this.document.client.elements.uname.removeAttribute("readOnly");
                      .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')      this.document.client.elements.udom.removeAttribute("readOnly");
                     .'</b></span></noscript>';      return;
 my $helpdeskscript;  }
 my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,  
                             $version,$authdomain,\$helpdeskscript);  // ]]>
   </script>
 my $loginform=(<<LFORM);  
 <form name="client" action="" onsubmit="return(send())">  ENDSCRIPT
   <input type="hidden" name="lextkey" value="$lextkey" />  
   <input type="hidden" name="uextkey" value="$uextkey" />  # --------------------------------------------------- Print login screen header
   <b><label for="uname">$lt{'un'}</label>:</b><br />  
   <input type="text" name="uname" size="15" value="$authusername" /><br />      my %add_entries = (
   <b><label for="upass$now">$lt{'pw'}</label>:</b><br />         bgcolor      => "$mainbg",
   <input type="password" name="upass$now" size="15" /><br />         text         => "$font",
   <b><label for="udom">$lt{'dom'}</label>:</b><br />         link         => "$link",
   <input type="text" name="udom" size="15" value="$authdomain" /><br />         vlink        => "$vlink",
   <input type="submit" value="$lt{'log'}" />         alink        => "$alink",
 </form>                 onload       => 'javascript:enableInput();',);
 LFORM  
       my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
     if ($showbanner) {      @hosts = &Apache::lonnet::current_machine_ids();
         $r->print(<<HEADER);      $lonhost_in_use = $lonhost;
 <!-- The LON-CAPA Header -->      if (@hosts > 1) {
 <table border="0" align="left" width="100%" cellspacing="0" cellpadding="1">          foreach my $hostid (@hosts) {
  <tr>              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
   <td align="left" valign="top" bgcolor="$pgbg">                  $lonhost_in_use = $hostid;
       <img src="$img" border="0" alt="The Learning Online Network with CAPA" />                  last;
   </td>              }
  </tr>          }
 </table>      }
 HEADER      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
     }      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
     $r->print(<<ENDTOP);      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
 <div class="LC_loginpage_space">&nbsp;</div>      if ($headextra) {
 <div class="LC_loginpage_floatLeft">          my $omitextra;
 <div class="LC_loginpage_loginContainer">          if ($headextra_exempt ne '') {
   $logintitle              my @exempt = split(',',$headextra_exempt);
    <table border="0" align="left" cellspacing="1" cellpadding="2" width="100%">              my $ip = $ENV{'REMOTE_ADDR'};
       <tr>              if (grep(/^\Q$ip\E$/,@exempt)) {
    <td>                  $omitextra = 1;
  $loginform              }
            </td>          }
       </tr>          unless ($omitextra) {
    </table>                my $confname = $defdom.'-domainconfig';
    $noscript_warning              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
 </div>                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
                     unless ($extra eq '-1') {
 <div class="LC_loginpage_loginInfo">                      $js .= "\n".$extra."\n";
         $loginhelp<br />                  }
         $forgotpw<br />              }
  $contactblock<br />          }
         $newuserlink      }
         $coursecatalog  
 </div>      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
 </div>         { 'redirect'       => [$expire,'/adm/roles'],
 ENDTOP   'add_entries' => \%add_entries,
     if ($showmainlogo) {   'only_body'   => 1,}));
         $r->print(' <img src="'.$logo.'" alt="" />'."\n");  
     }  # ----------------------------------------------------------------------- Texts
 $r->print(<<ENDTOP);  
 $announcements      my %lt=&Apache::lonlocal::texthash(
 $domainlogo            'un'       => 'Username',
 <div class="LC_loginpage_space">&nbsp;</div>            'pw'       => 'Password',
 ENDTOP            'dom'      => 'Domain',
             'perc'     => 'percent',
 $r->print(<<ENDDOCUMENT);            'load'     => 'Server Load',
      <table border="0" cellspacing="0" cellpadding="0">            'userload' => 'User Load',
       <tr>            'catalog'  => 'Course/Community Catalog',
        <td  align="left" valign="top">            'log'      => 'Log in',
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>            'help'     => 'Log-in Help',
        </td>            'serv'     => 'Server',
        <td  align="left" valign="top">            'servadm'  => 'Server Administration',
         <small><tt>&nbsp;$domain</tt></small>            'helpdesk' => 'Contact Helpdesk',
        </td>            'forgotpw' => 'Forgot password?',
       </tr>            'newuser'  => 'New User?',
       <tr>         );
        <td  align="left" valign="top">  # -------------------------------------------------- Change password field name
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>  
        </td>      my $forgotpw = &forgotpwdisplay(%lt);
        <td align="left" valign="top">      $forgotpw .= '<br />' if $forgotpw;
         <small><tt>&nbsp;$lonhost ($role)</tt></small>      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
        </td>      if ($loginhelp) {
       </tr>          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
       <tr>      }
        <td align="left" valign="top">  
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small>  # ---------------------------------------------------- Serve out DES JavaScript
        </td>      {
        <td align="left" valign="top">      my $jsh=Apache::File->new($include."/londes.js");
         <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>      $r->print(<$jsh>);
        </td>      }
       </tr>  # ---------------------------------------------------------- Serve rest of page
       <tr>  
        <td align="left" valign="top">      $r->print(
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small>      '<div class="LC_Box"'
        </td>     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
        <td align="left" valign="top">  );
         <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>  
        </td>      $r->print(<<ENDSERVERFORM);
       </tr>  <form name="server" action="/adm/authenticate" method="post" target="_top">
      </table>     <input type="hidden" name="logtoken" value="$logtoken" />
  </div>     <input type="hidden" name="serverid" value="$lonhost" />
      <input type="hidden" name="uname" value="" />
 <script type="text/javascript">     <input type="hidden" name="upass0" value="" />
 // <![CDATA[     <input type="hidden" name="udom" value="" />
 // the if prevents the script error if the browser can not handle this     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
 if ( document.client.uname ) { document.client.uname.focus(); }     <input type="hidden" name="localres" value="$env{'form.localres'}" />
 // ]]>    </form>
 </script>  ENDSERVERFORM
 $helpdeskscript      my $coursecatalog;
       if (($showcoursecat eq '') || ($showcoursecat)) {
 ENDDOCUMENT          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
     my %endargs = ( 'noredirectlink' => 1, );      }
     $r->print(&Apache::loncommon::end_page(\%endargs));      my $newuserlink;
     return OK;      if ($shownewuserlink) {
 }          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
       }
 sub redirect_page {      my $logintitle =
     my ($desthost) = @_;          '<h2 class="LC_hcell"'
     my $protocol = $Apache::lonnet::protocol{$desthost};         .' style="background:'.$loginbox_header_bgcol.';'
     $protocol = 'http' if ($protocol ne 'https');         .' color:'.$loginbox_header_textcol.'">'
     my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).'/';         .$lt{'log'}
     if ($env{'form.firsturl'} ne '') {         .'</h2>';
         $url .='?firsturl='.$env{'form.firsturl'};  
     }      my $noscript_warning='<noscript><span class="LC_warning"><b>'
     my $start_page = &Apache::loncommon::start_page('Switching Server',undef,                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
                                                     {'redirect' => [0,$url],});                          .'</b></span></noscript>';
     my $end_page   = &Apache::loncommon::end_page();      my $helpdeskscript;
     return $start_page.$end_page;      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
 }                                         $authdomain,\$helpdeskscript,
                                          $showhelpdesk,\@possdoms);
 sub contactdisplay {  
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;      my $mobileargs;
     my $contactblock;      if ($clientmobile) {
     my $showhelpdesk = 0;          $mobileargs = 'autocapitalize="off" autocorrect="off"';
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};      }
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {      my $loginform=(<<LFORM);
         $showhelpdesk = 1;  <form name="client" action="" onsubmit="return(send())">
     }    <input type="hidden" name="lextkey" value="$lextkey" />
     if ($servadm && $showadminmail) {    <input type="hidden" name="uextkey" value="$uextkey" />
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.    <b><label for="uname">$lt{'un'}</label>:</b><br />
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
     }    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
     if ($showhelpdesk) {    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
         $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';    <b><label for="udom">$lt{'dom'}</label>:</b><br />
         my $thisurl = &escape('/adm/login');    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
         $$helpdeskscript = <<"ENDSCRIPT";    <input type="submit" value="$lt{'log'}" />
 <script type="text/javascript">  </form>
 // <![CDATA[  LFORM
 function helpdesk() {  
     var codedom = document.client.udom.value;      if ($showbanner) {
     if (codedom == '') {          $r->print(<<HEADER);
         codedom = "$authdomain";  <!-- The LON-CAPA Header -->
     }  <div style="background:$pgbg;margin:0;width:100%;">
     var querystr = "origurl=$thisurl&codedom="+codedom;    <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
     document.location.href = "/adm/helpdesk?"+querystr;  </div>
     return;  HEADER
 }      }
 // ]]>      $r->print(<<ENDTOP);
 </script>  <div style="float:left;margin-top:0;">
 ENDSCRIPT  <div class="LC_Box" style="background:$loginbox_bg;">
     }    $logintitle
     $contactblock .= <<"ENDBLOCK";    $loginform
      &nbsp;&nbsp;&nbsp;$version    $noscript_warning
 ENDBLOCK  </div>
     return $contactblock;   
 }  <div class="LC_Box" style="padding-top: 10px;">
     $loginhelp
 sub forgotpwdisplay {    $forgotpw
     my (%lt) = @_;    $contactblock
     my $prompt_for_resetpw = 1;     $newuserlink
     if ($prompt_for_resetpw) {    $coursecatalog
         return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';  </div>
     }  </div>
     return;  
 }  <div>
   ENDTOP
 sub loginhelpdisplay {      if ($showmainlogo) {
     my (%lt) = @_;          $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
     my $login_help = 1;      }
     if ($login_help) {  $r->print(<<ENDTOP);
         return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>';  $announcements
     }  </div>
     return;  <hr style="clear:both;" />
 }  ENDTOP
       my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
 sub coursecatalog_link {      $domainrow = <<"END";
     my ($linkname) = @_;        <tr>
     return <<"END";         <td  align="left" valign="top">
       <a href="/adm/coursecatalog">$linkname</a>          <small><b>$lt{'dom'}:&nbsp;</b></small>
 END         </td>
 }         <td  align="left" valign="top">
           <small><tt>&nbsp;$domain</tt></small>
 sub newuser_link {         </td>
     my ($linkname) = @_;        </tr>
     return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';  END
 }      $serverrow = <<"END";
         <tr>
 1;         <td  align="left" valign="top">
 __END__          <small><b>$lt{'serv'}:&nbsp;</b></small>
          </td>
          <td align="left" valign="top">
           <small><tt>&nbsp;$lonhost ($role)</tt></small>
          </td>
         </tr>
   END
       if ($loadlim) {
           $loadrow = <<"END";
         <tr>
          <td align="left" valign="top">
           <small><b>$lt{'load'}:&nbsp;</b></small>
          </td>
          <td align="left" valign="top">
           <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
          </td>
         </tr>
   END
       }
       if ($uloadlim) {
           $userloadrow = <<"END";
         <tr>
          <td align="left" valign="top">
           <small><b>$lt{'userload'}:&nbsp;</b></small>
          </td>
          <td align="left" valign="top">
           <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
          </td>
         </tr>
   END
       }
       if (($version ne '') && ($version ne '<!-- VERSION -->')) {
           $versionrow = <<"END";
         <tr>
          <td colspan="2" align="left">
           <small>$version</small>
          </td>
         </tr>
   END
       }
   
       $r->print(<<ENDDOCUMENT);
       <div style="float: left;">
        <table border="0" cellspacing="0" cellpadding="0">
   $domainrow
   $serverrow
   $loadrow    
   $userloadrow
   $versionrow
        </table>
       </div>
       <div style="float: right;">
       $domainlogo
       </div>
       <br style="clear:both;" />
    </div>
   
   <script type="text/javascript">
   // <![CDATA[
   // the if prevents the script error if the browser can not handle this
   if ( document.client.uname ) { document.client.uname.focus(); }
   // ]]>
   </script>
   $helpdeskscript
   
   ENDDOCUMENT
       my %endargs = ( 'noredirectlink' => 1, );
       $r->print(&Apache::loncommon::end_page(\%endargs));
       return OK;
   }
   
   sub check_loginvia {
       my ($domain,$lonhost) = @_;
       if ($domain eq '' || $lonhost eq '') {
           return;
       }
       my %domconfhash = &Apache::loncommon::get_domainconf($domain);
       my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
       my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
       my $output;
       if ($loginvia ne '') {
           my $noredirect;
           my $ip = $ENV{'REMOTE_ADDR'};
           if ($ip eq '127.0.0.1') {
               $noredirect = 1;
           } else {
               if ($loginvia_exempt ne '') {
                   my @exempt = split(',',$loginvia_exempt);
                   if (grep(/^\Q$ip\E$/,@exempt)) {
                       $noredirect = 1;
                   }
               }
           }
           unless ($noredirect) {
               my ($newhost,$path);
               if ($loginvia =~ /:/) {
                   ($newhost,$path) = split(':',$loginvia);
               } else {
                   $newhost = $loginvia;
               }
               if ($newhost ne $lonhost) {
                   if (&Apache::lonnet::hostname($newhost) ne '') {
                       $output = &redirect_page($newhost,$path);
                   }
               }
           }
       }
       return $output;
   }
   
   sub redirect_page {
       my ($desthost,$path) = @_;
       my $protocol = $Apache::lonnet::protocol{$desthost};
       $protocol = 'http' if ($protocol ne 'https');
       unless ($path =~ m{^/}) {
           $path = '/'.$path;
       }
       my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
       if ($env{'form.firsturl'} ne '') {
           $url .='?firsturl='.$env{'form.firsturl'};
       }
       my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
                                                       {'redirect' => [0,$url],});
       my $end_page   = &Apache::loncommon::end_page();
       return $start_page.$end_page;
   }
   
   sub contactdisplay {
       my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
           $possdoms) = @_;
       my $contactblock;
       my $origmail;
       if (ref($possdoms) eq 'ARRAY') {
           if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
               $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
           }
       }
       my $requestmail =
           &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                    $authdomain,$origmail);
       unless ($showhelpdesk eq '0') {
           if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
               $showhelpdesk = 1;
           } else {
               $showhelpdesk = 0;
           }
       }
       if ($servadm && $showadminmail) {
           $contactblock .= $$lt{'servadm'}.':<br />'.
                            '<tt>'.$servadm.'</tt><br />';
       }
       if ($showhelpdesk) {
           $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
           my $thisurl = &escape('/adm/login');
           $$helpdeskscript = <<"ENDSCRIPT";
   <script type="text/javascript">
   // <![CDATA[
   function helpdesk() {
       var possdom = document.client.udom.value;
       var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
       if (codedom == '') {
           codedom = "$authdomain";
       }
       var querystr = "origurl=$thisurl&codedom="+codedom;
       document.location.href = "/adm/helpdesk?"+querystr;
       return;
   }
   // ]]>
   </script>
   ENDSCRIPT
       }
       return $contactblock;
   }
   
   sub forgotpwdisplay {
       my (%lt) = @_;
       my $prompt_for_resetpw = 1;
       if ($prompt_for_resetpw) {
           return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
       }
       return;
   }
   
   sub coursecatalog_link {
       my ($linkname) = @_;
       return <<"END";
         <a href="/adm/coursecatalog">$linkname</a>
   END
   }
   
   sub newuser_link {
       my ($linkname) = @_;
       return '<a href="/adm/createaccount">'.$linkname.'</a>';
   }
   
   1;
   __END__
Removed from v.1.126  
changed lines
  Added in v.1.171

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