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Diff for /loncom/auth/lonlogin.pm between versions 1.149 and 1.166

version 1.149, 2011/11/07 18:16:10 version 1.166, 2016/04/19 18:09:11
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;
     
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
   
     &Apache::loncommon::get_unprocessed_cgi      &Apache::loncommon::get_unprocessed_cgi
  (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
       $ENV{'REDIRECT_QUERY_STRING'}),        $ENV{'REDIRECT_QUERY_STRING'}),
  ['interface','username','domain','firsturl','localpath','localres',   ['interface','username','domain','firsturl','localpath','localres',
   'token','role','symb']);    'token','role','symb','iptoken']);
     if (!defined($env{'form.firsturl'})) {      if (!defined($env{'form.firsturl'})) {
         &Apache::lonacc::get_posted_cgi($r,['firsturl']);          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
     }      }
   
 # -- check if they are a migrating user  # -- check if they are a migrating user
     if (defined($env{'form.token'})) {      if (defined($env{'form.token'})) {
  return &Apache::migrateuser::handler($r);   return &Apache::migrateuser::handler($r);
     }      }
   
     &Apache::loncommon::no_cache($r);      &Apache::loncommon::no_cache($r);
     &Apache::lonlocal::get_language_handle($r);      &Apache::lonlocal::get_language_handle($r);
     &Apache::loncommon::content_type($r,'text/html');      &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
   
   
 # Are we re-routing?  # Are we re-routing?
     my $londocroot = $r->dir_config('lonDocRoot');       my $londocroot = $r->dir_config('lonDocRoot');
     if (-e "$londocroot/lon-status/reroute.txt") {      if (-e "$londocroot/lon-status/reroute.txt") {
  &Apache::lonauth::reroute($r);   &Apache::lonauth::reroute($r);
  return OK;   return OK;
     }      }
   
     $env{'form.firsturl'} =~ s/(`)/'/g;      $env{'form.firsturl'} =~ s/(`)/'/g;
   
 # -------------------------------- Prevent users from attempting to login twice  # -------------------------------- Prevent users from attempting to login twice
     my $handle = &Apache::lonnet::check_for_valid_session($r);      my $handle = &Apache::lonnet::check_for_valid_session($r);
     if ($handle ne '') {      if ($handle ne '') {
         my $lonidsdir=$r->dir_config('lonIDsDir');          my $lonidsdir=$r->dir_config('lonIDsDir');
         if ($handle=~/^publicuser\_/) {          if ($handle=~/^publicuser\_/) {
 # For "public user" - remove it, we apparently really want to login  # For "public user" - remove it, we apparently really want to login
     unlink($r->dir_config('lonIDsDir')."/$handle.id");      unlink($r->dir_config('lonIDsDir')."/$handle.id");
         } else {          } else {
 # Indeed, a valid token is found  # Indeed, a valid token is found
             &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);              &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
     my $start_page =       my $start_page =
         &Apache::loncommon::start_page('Already logged in');          &Apache::loncommon::start_page('Already logged in');
     my $end_page =       my $end_page =
         &Apache::loncommon::end_page();          &Apache::loncommon::end_page();
             my $dest = '/adm/roles';              my $dest = '/adm/roles';
             if ($env{'form.firsturl'} ne '') {              if ($env{'form.firsturl'} ne '') {
                 $dest = $env{'form.firsturl'};                   $dest = $env{'form.firsturl'};
             }              }
     $r->print(      $r->print(
                   $start_page                    $start_page
                  .'<h1>'.&mt('You are already logged in!').'</h1>'                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
                   '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
                  .$end_page                   .$end_page
                  );                   );
             return OK;              return OK;
         }          }
     }      }
   
 # ---------------------------------------------------- No valid token, continue  # ---------------------------------------------------- No valid token, continue
   
  # ---------------------------- Not possible to really login to domain "public"  # ---------------------------- Not possible to really login to domain "public"
     if ($env{'form.domain'} eq 'public') {      if ($env{'form.domain'} eq 'public') {
  $env{'form.domain'}='';   $env{'form.domain'}='';
  $env{'form.username'}='';   $env{'form.username'}='';
     }      }
 # ----------------------------------------------------------- Process Interface  
     $env{'form.interface'}=~s/\W//g;  # ------ Is this page requested because /adm/migrateuser detected an IP change?
       my %sessiondata;
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};      if ($env{'form.iptoken'}) {
           %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
     my $iconpath=           unless ($sessiondata{'sessionserver'}) {
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
               delete($env{'form.iptoken'});
     my $lonhost = $r->dir_config('lonHostID');          }
     my $domain = &Apache::lonnet::default_login_domain();      }
     if ($lonhost ne '') {  # ----------------------------------------------------------- Process Interface
         my $redirect = &check_loginvia($domain,$lonhost);      $env{'form.interface'}=~s/\W//g;
         if ($redirect) {  
             $r->print($redirect);      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
             return OK;          &Apache::loncommon::decode_user_agent();
         }   
     }      my $iconpath=
    &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
     if (($env{'form.domain'}) &&   
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {      my $lonhost = $r->dir_config('lonHostID');
  $domain=$env{'form.domain'};      my $domain = &Apache::lonnet::default_login_domain();
     }      my $defdom = $domain;
     my $role    = $r->dir_config('lonRole');      if ($lonhost ne '') {
     my $loadlim = $r->dir_config('lonLoadLim');          unless ($sessiondata{'sessionserver'}) {
     my $uloadlim= $r->dir_config('lonUserLoadLim');              my $redirect = &check_loginvia($domain,$lonhost);
     my $servadm = $r->dir_config('lonAdmEMail');              if ($redirect) {
     my $tabdir  = $r->dir_config('lonTabDir');                  $r->print($redirect);
     my $include = $r->dir_config('lonIncludes');                  return OK;
     my $expire  = $r->dir_config('lonExpire');              }
     my $version = $r->dir_config('lonVersion');          }
     my $host_name = &Apache::lonnet::hostname($lonhost);      }
   
 # --------------------------------------------- Default values for login fields      if (($sessiondata{'domain'}) &&
           (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');          $domain=$sessiondata{'domain'};
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);      } elsif (($env{'form.domain'}) &&
    (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
 # ---------------------------------------------------------- Determine own load   $domain=$env{'form.domain'};
     my $loadavg;      }
     {  
  my $loadfile=Apache::File->new('/proc/loadavg');      my $role    = $r->dir_config('lonRole');
  $loadavg=<$loadfile>;      my $loadlim = $r->dir_config('lonLoadLim');
     }      my $uloadlim= $r->dir_config('lonUserLoadLim');
     $loadavg =~ s/\s.*//g;      my $servadm = $r->dir_config('lonAdmEMail');
       my $tabdir  = $r->dir_config('lonTabDir');
     my ($loadpercent,$userloadpercent);      my $include = $r->dir_config('lonIncludes');
     if ($loadlim) {      my $expire  = $r->dir_config('lonExpire');
         $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);      my $version = $r->dir_config('lonVersion');
     }      my $host_name = &Apache::lonnet::hostname($lonhost);
     if ($uloadlim) {  
         $userloadpercent=&Apache::lonnet::userload();  # --------------------------------------------- Default values for login fields
     }     
       my ($authusername,$authdomain);
     my $firsturl=      if ($sessiondata{'username'}) {
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});          $authusername=$sessiondata{'username'};
       } else {
 # ----------------------------------------------------------- Get announcements          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
     my $announcements=&Apache::lonnet::getannounce();          $authusername=($env{'form.username'}?$env{'form.username'}:'');
 # -------------------------------------------------------- Set login parameters      }
       if ($sessiondata{'domain'}) {
     my @hexstr=('0','1','2','3','4','5','6','7',          $authdomain=$sessiondata{'domain'};
                 '8','9','a','b','c','d','e','f');      } else {
     my $lkey='';          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
     for (0..7) {          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
         $lkey.=$hexstr[rand(15)];      }
     }  
   # ---------------------------------------------------------- Determine own load
     my $ukey='';      my $loadavg;
     for (0..7) {      {
         $ukey.=$hexstr[rand(15)];   my $loadfile=Apache::File->new('/proc/loadavg');
     }   $loadavg=<$loadfile>;
       }
     my $lextkey=hex($lkey);      $loadavg =~ s/\s.*//g;
     if ($lextkey>2147483647) { $lextkey-=4294967296; }  
       my ($loadpercent,$userloadpercent);
     my $uextkey=hex($ukey);      if ($loadlim) {
     if ($uextkey>2147483647) { $uextkey-=4294967296; }          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
       }
 # -------------------------------------------------------- Store away log token      if ($uloadlim) {
     my $tokenextras;          $userloadpercent=&Apache::lonnet::userload();
     if ($env{'form.role'}) {      }
         $tokenextras = '&role='.&escape($env{'form.role'});  
     }      my $firsturl=
     if ($env{'form.symb'}) {      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
         if (!$tokenextras) {  
             $tokenextras = '&';  # ----------------------------------------------------------- Get announcements
         }      my $announcements=&Apache::lonnet::getannounce();
         $tokenextras .= '&symb='.&escape($env{'form.symb'});  # -------------------------------------------------------- Set login parameters
     }  
     my $logtoken=Apache::lonnet::reply(      my @hexstr=('0','1','2','3','4','5','6','7',
        'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,                  '8','9','a','b','c','d','e','f');
        $lonhost);      my $lkey='';
       for (0..7) {
 # -- If we cannot talk to ourselves, or hostID does not map to a hostname          $lkey.=$hexstr[rand(15)];
 #    we are in serious trouble      }
   
     if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {      my $ukey='';
         if ($logtoken eq 'no_such_host') {      for (0..7) {
             &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');          $ukey.=$hexstr[rand(15)];
         }      }
         my $spares='';  
  my $last;      my $lextkey=hex($lkey);
         foreach my $hostid (sort      if ($lextkey>2147483647) { $lextkey-=4294967296; }
     {  
  &Apache::lonnet::hostname($a) cmp      my $uextkey=hex($ukey);
     &Apache::lonnet::hostname($b);      if ($uextkey>2147483647) { $uextkey-=4294967296; }
     }  
     keys(%Apache::lonnet::spareid)) {  # -------------------------------------------------------- Store away log token
             next if ($hostid eq $lonhost);      my $tokenextras;
     my $hostname = &Apache::lonnet::hostname($hostid);      if ($env{'form.role'}) {
     next if (($last eq $hostname) || ($hostname eq ''));          $tokenextras = '&role='.&escape($env{'form.role'});
             $spares.='<br /><font size="+1"><a href="http://'.      }
                 $hostname.      if ($env{'form.symb'}) {
                 '/adm/login?domain='.$authdomain.'">'.          if (!$tokenextras) {
                 $hostname.'</a>'.              $tokenextras = '&';
                 ' '.&mt('(preferred)').'</font>'.$/;          }
     $last=$hostname;          $tokenextras .= '&symb='.&escape($env{'form.symb'});
         }      }
         if ($spares) {      if ($env{'form.iptoken'}) {
             $spares.= '<br />';          if (!$tokenextras) {
         }              $tokenextras = '&&';
 my %all_hostnames = &Apache::lonnet::all_hostnames();          }
 foreach my $hostid (sort          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
     {      }
  &Apache::lonnet::hostname($a) cmp      my $logtoken=Apache::lonnet::reply(
     &Apache::lonnet::hostname($b);         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
     }         $lonhost);
     keys(%all_hostnames)) {  
     next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
     my $hostname = &Apache::lonnet::hostname($hostid);  #    we are in serious trouble
     next if (($last eq $hostname) || ($hostname eq ''));  
     $spares.='<br /><a href="http://'.      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
  $hostname.          if ($logtoken eq 'no_such_host') {
  '/adm/login?domain='.$authdomain.'">'.              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
  $hostname.'</a>';          }
     $last=$hostname;          my $spares='';
 }   my $last;
 $r->print(          foreach my $hostid (sort
    '<html>'      {
   .'<head><title>'   &Apache::lonnet::hostname($a) cmp
   .&mt('The LearningOnline Network with CAPA')      &Apache::lonnet::hostname($b);
   .'</title></head>'      }
   .'<body bgcolor="#FFFFFF">'      keys(%Apache::lonnet::spareid)) {
   .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'              next if ($hostid eq $lonhost);
   .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'      my $hostname = &Apache::lonnet::hostname($hostid);
   .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');      next if (($last eq $hostname) || ($hostname eq ''));
     if ($spares) {              $spares.='<br /><font size="+1"><a href="http://'.
         $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')                  $hostname.
                  .'</p>'                  '/adm/login?domain='.$authdomain.'">'.
                  .$spares);                  $hostname.'</a>'.
     }                  ' '.&mt('(preferred)').'</font>'.$/;
     $r->print('</body>'      $last=$hostname;
   .'</html>'          }
     );          if ($spares) {
 return OK;              $spares.= '<br />';
 }          }
           my %all_hostnames = &Apache::lonnet::all_hostnames();
 # ----------------------------------------------- Apparently we are in business          foreach my $hostid (sort
 $servadm=~s/\,/\<br \/\>/g;      {
    &Apache::lonnet::hostname($a) cmp
 # ----------------------------------------------------------- Front page design      &Apache::lonnet::hostname($b);
 my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);      }
 my $font=&Apache::loncommon::designparm('login.font',$domain);      keys(%all_hostnames)) {
 my $link=&Apache::loncommon::designparm('login.link',$domain);              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
 my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);              my $hostname = &Apache::lonnet::hostname($hostid);
 my $alink=&Apache::loncommon::designparm('login.alink',$domain);              next if (($last eq $hostname) || ($hostname eq ''));
 my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);              $spares.='<br /><a href="http://'.
 my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);               $hostname.
 my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);               '/adm/login?domain='.$authdomain.'">'.
 my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);               $hostname.'</a>';
 my $logo=&Apache::loncommon::designparm('login.logo',$domain);              $last=$hostname;
 my $img=&Apache::loncommon::designparm('login.img',$domain);           }
 my $domainlogo=&Apache::loncommon::domainlogo($domain);           $r->print(
 my $showbanner = 1;     '<html>'
 my $showmainlogo = 1;    .'<head><title>'
 if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {    .&mt('The LearningOnline Network with CAPA')
     $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);    .'</title></head>'
 }    .'<body bgcolor="#FFFFFF">'
 if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
     $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
 }    .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
 my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);          if ($spares) {
 my $showcoursecat =              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
 &Apache::loncommon::designparm('login.coursecatalog',$domain);                       .'</p>'
 my $shownewuserlink =                        .$spares);
 &Apache::loncommon::designparm('login.newuser',$domain);          }
 my $now=time;          $r->print('</body>'
 my $js = (<<ENDSCRIPT);                   .'</html>'
           );
 <script type="text/javascript" language="JavaScript">          return OK;
 // <![CDATA[      }
 function send()  
 {  # ----------------------------------------------- Apparently we are in business
 this.document.server.elements.uname.value      $servadm=~s/\,/\<br \/\>/g;
 =this.document.client.elements.uname.value;  
   # ----------------------------------------------------------- Front page design
 this.document.server.elements.udom.value      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
 =this.document.client.elements.udom.value;      my $font=&Apache::loncommon::designparm('login.font',$domain);
       my $link=&Apache::loncommon::designparm('login.link',$domain);
 uextkey=this.document.client.elements.uextkey.value;      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
 lextkey=this.document.client.elements.lextkey.value;      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
 initkeys();      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
       my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
 this.document.server.elements.upass0.value      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
     =crypted(this.document.client.elements.upass$now.value.substr(0,15));      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
 this.document.server.elements.upass1.value      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
     =crypted(this.document.client.elements.upass$now.value.substr(15,15));      my $img=&Apache::loncommon::designparm('login.img',$domain);
 this.document.server.elements.upass2.value      my $domainlogo=&Apache::loncommon::domainlogo($domain);
     =crypted(this.document.client.elements.upass$now.value.substr(30,15));      my $showbanner = 1;
       my $showmainlogo = 1;
 this.document.client.elements.uname.value='';      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
 this.document.client.elements.upass$now.value='';          $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
       }
 this.document.server.submit();      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
 return false;          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
 }      }
       my $showadminmail;
 function enableInput() {      my @possdoms = &Apache::lonnet::current_machine_domains();
     this.document.client.elements.upass$now.removeAttribute("readOnly");      if (grep(/^\Q$domain\E$/,@possdoms)) {
     this.document.client.elements.uname.removeAttribute("readOnly");          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
     this.document.client.elements.udom.removeAttribute("readOnly");      }
     return;      my $showcoursecat =
 }          &Apache::loncommon::designparm('login.coursecatalog',$domain);
       my $shownewuserlink =
 // ]]>          &Apache::loncommon::designparm('login.newuser',$domain);
 </script>      my $showhelpdesk =
           &Apache::loncommon::designparm('login.helpdesk',$domain);
 ENDSCRIPT      my $now=time;
       my $js = (<<ENDSCRIPT);
 # --------------------------------------------------- Print login screen header  
   <script type="text/javascript" language="JavaScript">
 my %add_entries = (  // <![CDATA[
        bgcolor      => "$mainbg",  function send()
        text         => "$font",  {
        link         => "$link",  this.document.server.elements.uname.value
        vlink        => "$vlink",  =this.document.client.elements.uname.value;
        alink        => "$alink",  
                onload       => 'javascript:enableInput();',);  this.document.server.elements.udom.value
   =this.document.client.elements.udom.value;
 $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,  
        { 'redirect'       => [$expire,'/adm/roles'],   uextkey=this.document.client.elements.uextkey.value;
  'add_entries' => \%add_entries,  lextkey=this.document.client.elements.lextkey.value;
  'only_body'   => 1,}));  initkeys();
   
 # ----------------------------------------------------------------------- Texts  if(this.document.server.action.substr(0,5) === 'http:'){
       this.document.server.elements.upass0.value
 my %lt=&Apache::lonlocal::texthash(          =getCrypted(this.document.client.elements.upass$now.value);
           'un'       => 'Username',  } else {
           'pw'       => 'Password',      this.document.server.elements.upass0.value
           'dom'      => 'Domain',          =this.document.client.elements.upass$now.value;
           'perc'     => 'percent',  
           'load'     => 'Server Load',  this.document.client.elements.uname.value='';
           'userload' => 'User Load',  this.document.client.elements.upass$now.value='';
           'catalog'  => 'Course/Community Catalog',  
           'log'      => 'Log in',  this.document.server.submit();
           'help'     => 'Log-in Help',  return false;
           'serv'     => 'Server',  }
           'servadm'  => 'Server Administration',  
           'helpdesk' => 'Contact Helpdesk',  function enableInput() {
           'forgotpw' => 'Forgot password?',      this.document.client.elements.upass$now.removeAttribute("readOnly");
           'newuser'  => 'New User?',      this.document.client.elements.uname.removeAttribute("readOnly");
        );      this.document.client.elements.udom.removeAttribute("readOnly");
 # -------------------------------------------------- Change password field name      return;
   }
 my $forgotpw = &forgotpwdisplay(%lt);  
 $forgotpw .= '<br />' if $forgotpw;  // ]]>
 my $loginhelp = &loginhelpdisplay($authdomain,%lt);  </script>
 $loginhelp .= '<br />' if $loginhelp;  
   ENDSCRIPT
 # ---------------------------------------------------- Serve out DES JavaScript  
 {  # --------------------------------------------------- Print login screen header
 my $jsh=Apache::File->new($include."/londes.js");  
 $r->print(<$jsh>);      my %add_entries = (
 }         bgcolor      => "$mainbg",
 # ---------------------------------------------------------- Serve rest of page         text         => "$font",
          link         => "$link",
 $r->print(         vlink        => "$vlink",
     '<div class="LC_Box"'         alink        => "$alink",
    .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'                 onload       => 'javascript:enableInput();',);
 );  
       my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
 #      @hosts = &Apache::lonnet::current_machine_ids();
 #  If the loadbalancing yielded just http:// because perhaps there's no loadbalancing?      $lonhost_in_use = $lonhost;
 #  then just us a relative link to authenticate:      if (@hosts > 1) {
 #          foreach my $hostid (@hosts) {
               if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
 $r->print(<<ENDSERVERFORM);                  $lonhost_in_use = $hostid;
 <form name="server" action="/adm/authenticate" method="post" target="_top">                  last;
    <input type="hidden" name="logtoken" value="$logtoken" />              }
    <input type="hidden" name="serverid" value="$lonhost" />          }
    <input type="hidden" name="uname" value="" />      }
    <input type="hidden" name="upass0" value="" />      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
    <input type="hidden" name="upass1" value="" />      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
    <input type="hidden" name="upass2" value="" />      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
    <input type="hidden" name="udom" value="" />      if ($headextra) {
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />          my $omitextra;
    <input type="hidden" name="localres" value="$env{'form.localres'}" />          if ($headextra_exempt ne '') {
   </form>              my @exempt = split(',',$headextra_exempt);
 ENDSERVERFORM              my $ip = $ENV{'REMOTE_ADDR'};
 my $coursecatalog;              if (grep(/^\Q$ip\E$/,@exempt)) {
 if (($showcoursecat eq '') || ($showcoursecat)) {                  $omitextra = 1;
     $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';              }
 }          }
 my $newuserlink;          unless ($omitextra) {
 if ($shownewuserlink) {              my $confname = $defdom.'-domainconfig';
     $newuserlink = &newuser_link($lt{'newuser'}).'<br />';              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
 }                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
 my $logintitle =                  unless ($extra eq '-1') {
     '<h2 class="LC_hcell"'                      $js .= "\n".$extra."\n";
    .' style="background:'.$loginbox_header_bgcol.';'                  }
    .' color:'.$loginbox_header_textcol.'">'              }
    .$lt{'log'}          }
    .'</h2>';      }
   
 my $noscript_warning='<noscript><span class="LC_warning"><b>'      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
                      .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')         { 'redirect'       => [$expire,'/adm/roles'],
                     .'</b></span></noscript>';   'add_entries' => \%add_entries,
 my $helpdeskscript;   'only_body'   => 1,}));
 my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,  
                                    $authdomain,\$helpdeskscript);  # ----------------------------------------------------------------------- Texts
   
 my $loginform=(<<LFORM);      my %lt=&Apache::lonlocal::texthash(
 <form name="client" action="" onsubmit="return(send())">            'un'       => 'Username',
   <input type="hidden" name="lextkey" value="$lextkey" />            'pw'       => 'Password',
   <input type="hidden" name="uextkey" value="$uextkey" />            'dom'      => 'Domain',
   <b><label for="uname">$lt{'un'}</label>:</b><br />            'perc'     => 'percent',
   <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" /><br />            'load'     => 'Server Load',
   <b><label for="upass$now">$lt{'pw'}</label>:</b><br />            'userload' => 'User Load',
   <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />            'catalog'  => 'Course/Community Catalog',
   <b><label for="udom">$lt{'dom'}</label>:</b><br />            'log'      => 'Log in',
   <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" /><br />            'help'     => 'Log-in Help',
   <input type="submit" value="$lt{'log'}" />            'serv'     => 'Server',
 </form>            'servadm'  => 'Server Administration',
 LFORM            'helpdesk' => 'Contact Helpdesk',
             'forgotpw' => 'Forgot password?',
     if ($showbanner) {            'newuser'  => 'New User?',
         $r->print(<<HEADER);         );
 <!-- The LON-CAPA Header -->  # -------------------------------------------------- Change password field name
 <div style="background:$pgbg;margin:0;width:100%;">  
   <img src="$img" border="0" alt="The Learning Online Network with CAPA" />      my $forgotpw = &forgotpwdisplay(%lt);
 </div>      $forgotpw .= '<br />' if $forgotpw;
 HEADER      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
     }      if ($loginhelp) {
     $r->print(<<ENDTOP);          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
 <div style="float:left;margin-top:0;">      }
 <div class="LC_Box" style="background:$loginbox_bg;">  
   $logintitle  # ---------------------------------------------------- Serve out DES JavaScript
   $loginform      {
   $noscript_warning      my $jsh=Apache::File->new($include."/londes.js");
 </div>      $r->print(<$jsh>);
         }
 <div class="LC_Box" style="padding-top: 10px;">  # ---------------------------------------------------------- Serve rest of page
   $loginhelp  
   $forgotpw      $r->print(
   $contactblock      '<div class="LC_Box"'
   $newuserlink     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
   $coursecatalog  );
 </div>  
 </div>      $r->print(<<ENDSERVERFORM);
   <form name="server" action="/adm/authenticate" method="post" target="_top">
 <div>     <input type="hidden" name="logtoken" value="$logtoken" />
 ENDTOP     <input type="hidden" name="serverid" value="$lonhost" />
     if ($showmainlogo) {     <input type="hidden" name="uname" value="" />
         $r->print(' <img src="'.$logo.'" alt="" />'."\n");     <input type="hidden" name="upass0" value="" />
     }     <input type="hidden" name="udom" value="" />
 $r->print(<<ENDTOP);     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
 $announcements     <input type="hidden" name="localres" value="$env{'form.localres'}" />
 </div>    </form>
 <hr style="clear:both;" />  ENDSERVERFORM
 ENDTOP      my $coursecatalog;
     my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);      if (($showcoursecat eq '') || ($showcoursecat)) {
     $domainrow = <<"END";          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
       <tr>      }
        <td  align="left" valign="top">      my $newuserlink;
         <small><b>$lt{'dom'}:&nbsp;</b></small>      if ($shownewuserlink) {
        </td>          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
        <td  align="left" valign="top">      }
         <small><tt>&nbsp;$domain</tt></small>      my $logintitle =
        </td>          '<h2 class="LC_hcell"'
       </tr>         .' style="background:'.$loginbox_header_bgcol.';'
 END         .' color:'.$loginbox_header_textcol.'">'
     $serverrow = <<"END";         .$lt{'log'}
       <tr>         .'</h2>';
        <td  align="left" valign="top">  
         <small><b>$lt{'serv'}:&nbsp;</b></small>      my $noscript_warning='<noscript><span class="LC_warning"><b>'
        </td>                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
        <td align="left" valign="top">                          .'</b></span></noscript>';
         <small><tt>&nbsp;$lonhost ($role)</tt></small>      my $helpdeskscript;
        </td>      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
       </tr>                                         $authdomain,\$helpdeskscript,
 END                                         $showhelpdesk,\@possdoms);
     if ($loadlim) {  
         $loadrow = <<"END";      my $mobileargs;
       <tr>      if ($clientmobile) {
        <td align="left" valign="top">          $mobileargs = 'autocapitalize="off" autocorrect="off"';
         <small><b>$lt{'load'}:&nbsp;</b></small>      }
        </td>      my $loginform=(<<LFORM);
        <td align="left" valign="top">  <form name="client" action="" onsubmit="return(send())">
         <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>    <input type="hidden" name="lextkey" value="$lextkey" />
        </td>    <input type="hidden" name="uextkey" value="$uextkey" />
       </tr>    <b><label for="uname">$lt{'un'}</label>:</b><br />
 END    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
     }    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
     if ($uloadlim) {    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
         $userloadrow = <<"END";    <b><label for="udom">$lt{'dom'}</label>:</b><br />
       <tr>    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
        <td align="left" valign="top">    <input type="submit" value="$lt{'log'}" />
         <small><b>$lt{'userload'}:&nbsp;</b></small>  </form>
        </td>  LFORM
        <td align="left" valign="top">  
         <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>      if ($showbanner) {
        </td>          $r->print(<<HEADER);
       </tr>  <!-- The LON-CAPA Header -->
 END  <div style="background:$pgbg;margin:0;width:100%;">
     }    <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
     if (($version ne '') && ($version ne '<!-- VERSION -->')) {  </div>
         $versionrow = <<"END";  HEADER
       <tr>      }
        <td colspan="2" align="left">      $r->print(<<ENDTOP);
         <small>$version</small>  <div style="float:left;margin-top:0;">
        </td>  <div class="LC_Box" style="background:$loginbox_bg;">
       </tr>    $logintitle
 END    $loginform
     }    $noscript_warning
   </div>
 $r->print(<<ENDDOCUMENT);   
     <div style="float: left;">  <div class="LC_Box" style="padding-top: 10px;">
      <table border="0" cellspacing="0" cellpadding="0">    $loginhelp
 $domainrow    $forgotpw
 $serverrow    $contactblock
 $loadrow        $newuserlink
 $userloadrow    $coursecatalog
 $versionrow  </div>
      </table>  </div>
     </div>  
     <div style="float: right;">  <div>
     $domainlogo  ENDTOP
     </div>      if ($showmainlogo) {
     <br style="clear:both;" />          $r->print(' <img src="'.$logo.'" alt="" />'."\n");
  </div>      }
   $r->print(<<ENDTOP);
 <script type="text/javascript">  $announcements
 // <![CDATA[  </div>
 // the if prevents the script error if the browser can not handle this  <hr style="clear:both;" />
 if ( document.client.uname ) { document.client.uname.focus(); }  ENDTOP
 // ]]>      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
 </script>      $domainrow = <<"END";
 $helpdeskscript        <tr>
          <td  align="left" valign="top">
 ENDDOCUMENT          <small><b>$lt{'dom'}:&nbsp;</b></small>
     my %endargs = ( 'noredirectlink' => 1, );         </td>
     $r->print(&Apache::loncommon::end_page(\%endargs));         <td  align="left" valign="top">
     return OK;          <small><tt>&nbsp;$domain</tt></small>
 }         </td>
         </tr>
 sub check_loginvia {  END
     my ($domain,$lonhost) = @_;      $serverrow = <<"END";
     if ($domain eq '' || $lonhost eq '') {        <tr>
         return;         <td  align="left" valign="top">
     }          <small><b>$lt{'serv'}:&nbsp;</b></small>
     my %domconfhash = &Apache::loncommon::get_domainconf($domain);         </td>
     my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};         <td align="left" valign="top">
     my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};          <small><tt>&nbsp;$lonhost ($role)</tt></small>
     my $output;         </td>
     if ($loginvia ne '') {        </tr>
         my $noredirect;  END
         my $ip = $ENV{'REMOTE_ADDR'};      if ($loadlim) {
         if ($ip eq '127.0.0.1') {          $loadrow = <<"END";
             $noredirect = 1;        <tr>
         } else {         <td align="left" valign="top">
             if ($loginvia_exempt ne '') {          <small><b>$lt{'load'}:&nbsp;</b></small>
                 my @exempt = split(',',$loginvia_exempt);         </td>
                 if (grep(/^\Q$ip\E$/,@exempt)) {         <td align="left" valign="top">
                     $noredirect = 1;          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
                 }         </td>
             }        </tr>
         }  END
         unless ($noredirect) {      }
             my ($newhost,$path);      if ($uloadlim) {
             if ($loginvia =~ /:/) {          $userloadrow = <<"END";
                 ($newhost,$path) = split(':',$loginvia);        <tr>
             } else {         <td align="left" valign="top">
                 $newhost = $loginvia;          <small><b>$lt{'userload'}:&nbsp;</b></small>
             }         </td>
             if ($newhost ne $lonhost) {         <td align="left" valign="top">
                 if (&Apache::lonnet::hostname($newhost) ne '') {          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
                     $output = &redirect_page($newhost,$path);         </td>
                 }        </tr>
             }  END
         }      }
     }      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
     return $output;          $versionrow = <<"END";
 }        <tr>
          <td colspan="2" align="left">
 sub redirect_page {          <small>$version</small>
     my ($desthost,$path) = @_;         </td>
     my $protocol = $Apache::lonnet::protocol{$desthost};        </tr>
     $protocol = 'http' if ($protocol ne 'https');  END
     unless ($path =~ m{^/}) {      }
         $path = '/'.$path;  
     }      $r->print(<<ENDDOCUMENT);
     my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;      <div style="float: left;">
     if ($env{'form.firsturl'} ne '') {       <table border="0" cellspacing="0" cellpadding="0">
         $url .='?firsturl='.$env{'form.firsturl'};  $domainrow
     }  $serverrow
     my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,  $loadrow    
                                                     {'redirect' => [0,$url],});  $userloadrow
     my $end_page   = &Apache::loncommon::end_page();  $versionrow
     return $start_page.$end_page;       </table>
 }      </div>
       <div style="float: right;">
 sub contactdisplay {      $domainlogo
     my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript) = @_;      </div>
     my $contactblock;      <br style="clear:both;" />
     my $showhelpdesk = 0;   </div>
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};  
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {  <script type="text/javascript">
         $showhelpdesk = 1;  // <![CDATA[
     }  // the if prevents the script error if the browser can not handle this
     if ($servadm && $showadminmail) {  if ( document.client.uname ) { document.client.uname.focus(); }
         $contactblock .= $$lt{'servadm'}.':<br />'.  // ]]>
                          '<tt>'.$servadm.'</tt><br />';  </script>
     }  $helpdeskscript
     if ($showhelpdesk) {  
         $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';  ENDDOCUMENT
         my $thisurl = &escape('/adm/login');      my %endargs = ( 'noredirectlink' => 1, );
         $$helpdeskscript = <<"ENDSCRIPT";      $r->print(&Apache::loncommon::end_page(\%endargs));
 <script type="text/javascript">      return OK;
 // <![CDATA[  }
 function helpdesk() {  
     var codedom = document.client.udom.value;  sub check_loginvia {
     if (codedom == '') {      my ($domain,$lonhost) = @_;
         codedom = "$authdomain";      if ($domain eq '' || $lonhost eq '') {
     }          return;
     var querystr = "origurl=$thisurl&codedom="+codedom;      }
     document.location.href = "/adm/helpdesk?"+querystr;      my %domconfhash = &Apache::loncommon::get_domainconf($domain);
     return;      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
 }      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
 // ]]>      my $output;
 </script>      if ($loginvia ne '') {
 ENDSCRIPT          my $noredirect;
     }          my $ip = $ENV{'REMOTE_ADDR'};
     return $contactblock;          if ($ip eq '127.0.0.1') {
 }              $noredirect = 1;
           } else {
 sub forgotpwdisplay {              if ($loginvia_exempt ne '') {
     my (%lt) = @_;                  my @exempt = split(',',$loginvia_exempt);
     my $prompt_for_resetpw = 1;                   if (grep(/^\Q$ip\E$/,@exempt)) {
     if ($prompt_for_resetpw) {                      $noredirect = 1;
         return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';                  }
     }              }
     return;          }
 }          unless ($noredirect) {
               my ($newhost,$path);
 sub loginhelpdisplay {              if ($loginvia =~ /:/) {
     my ($authdomain,%lt) = @_;                  ($newhost,$path) = split(':',$loginvia);
     my $login_help = 1;              } else {
     if ($login_help) {                  $newhost = $loginvia;
         my $dom = $authdomain;              }
         if ($dom eq '') {              if ($newhost ne $lonhost) {
             $dom = &Apache::lonnet::default_login_domain();                  if (&Apache::lonnet::hostname($newhost) ne '') {
         }                      $output = &redirect_page($newhost,$path);
         my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom);                  }
         my $loginhelp_url = $helpconfig{'helpsettings'}{'loginhelpurl'};              }
         if ($loginhelp_url ne '') {          }
             return '<a href="'.$loginhelp_url.'">'.$lt{'help'}.'</a>';      }
         } else {      return $output;
             return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>';  }
         }  
     }  sub redirect_page {
     return;      my ($desthost,$path) = @_;
 }      my $protocol = $Apache::lonnet::protocol{$desthost};
       $protocol = 'http' if ($protocol ne 'https');
 sub coursecatalog_link {      unless ($path =~ m{^/}) {
     my ($linkname) = @_;          $path = '/'.$path;
     return <<"END";      }
       <a href="/adm/coursecatalog">$linkname</a>      my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
 END      if ($env{'form.firsturl'} ne '') {
 }          $url .='?firsturl='.$env{'form.firsturl'};
       }
 sub newuser_link {      my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
     my ($linkname) = @_;                                                      {'redirect' => [0,$url],});
     return '<a href="/adm/createaccount">'.$linkname.'</a>';      my $end_page   = &Apache::loncommon::end_page();
 }      return $start_page.$end_page;
   }
 1;  
 __END__  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.1.149  
changed lines
  Added in v.1.166

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