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Diff for /loncom/auth/lonlogin.pm between versions 1.106.4.1 and 1.164

version 1.106.4.1, 2009/05/18 12:59:47 version 1.164, 2015/06/06 14:39:42
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'}),        $ENV{'REDIRECT_QUERY_STRING'}),
  ['interface','username','domain','firsturl','localpath','localres',   ['interface','username','domain','firsturl','localpath','localres',
   'token']);    'token','role','symb','iptoken']);
     if (!defined($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?
     if (-e '/home/httpd/html/lon-status/reroute.txt') {      my $londocroot = $r->dir_config('lonDocRoot');
  &Apache::lonauth::reroute($r);      if (-e "$londocroot/lon-status/reroute.txt") {
  return OK;   &Apache::lonauth::reroute($r);
     }   return OK;
       }
   
 # -------------------------------- Prevent users from attempting to login twice      $env{'form.firsturl'} =~ s/(`)/'/g;
     my $handle = &Apache::lonnet::check_for_valid_session($r);  
     if ($handle=~/^publicuser\_/) {  # -------------------------------- Prevent users from attempting to login twice
 # For "public user" - remove it, we apparently really want to login      my $handle = &Apache::lonnet::check_for_valid_session($r);
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      if ($handle ne '') {
     } elsif ($handle ne '') {          my $lonidsdir=$r->dir_config('lonIDsDir');
 # Indeed, a valid token is found          if ($handle=~/^publicuser\_/) {
  my $start_page =   # For "public user" - remove it, we apparently really want to login
     &Apache::loncommon::start_page('Already logged in');      unlink($r->dir_config('lonIDsDir')."/$handle.id");
  my $end_page =           } else {
     &Apache::loncommon::end_page();  # Indeed, a valid token is found
  $r->print(              &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
                   $start_page      my $start_page =
                  .'<h1>'.&mt('You are already logged in!').'</h1>'          &Apache::loncommon::start_page('Already logged in');
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',      my $end_page =
                   '<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>').'</p>'          &Apache::loncommon::end_page();
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'              my $dest = '/adm/roles';
                  .$end_page              if ($env{'form.firsturl'} ne '') {
                  );                  $dest = $env{'form.firsturl'};
         return OK;              }
     }      $r->print(
                     $start_page
 # ---------------------------------------------------- No valid token, continue                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
                    .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
  # ---------------------------- Not possible to really login to domain "public"                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     if ($env{'form.domain'} eq 'public') {                   .$end_page
  $env{'form.domain'}='';                   );
  $env{'form.username'}='';              return OK;
     }          }
 # ----------------------------------------------------------- Process Interface      }
     $env{'form.interface'}=~s/\W//g;  
   # ---------------------------------------------------- No valid token, continue
     my $textbrowsers=$r->dir_config('lonTextBrowsers');  
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};  # ---------------------------- Not possible to really login to domain "public"
           if ($env{'form.domain'} eq 'public') {
     foreach (split(/\:/,$textbrowsers)) {   $env{'form.domain'}='';
  if ($httpbrowser=~/$_/i) {   $env{'form.username'}='';
     $env{'form.interface'}='textual';      }
         }  
     }  # ------ Is this page requested because /adm/migrateuser detected an IP change?
       my %sessiondata;
     my $fullgraph=($env{'form.interface'} ne 'textual');      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 $domain = &Apache::lonnet::default_login_domain();          }
     if (($env{'form.domain'}) &&       }
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {  # ----------------------------------------------------------- Process Interface
  $domain=$env{'form.domain'};      $env{'form.interface'}=~s/\W//g;
     }  
     my $role    = $r->dir_config('lonRole');      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     my $loadlim = $r->dir_config('lonLoadLim');          &Apache::loncommon::decode_user_agent();
     my $servadm = $r->dir_config('lonAdmEMail');  
     my $lonhost = $r->dir_config('lonHostID');      my $iconpath=
     my $tabdir  = $r->dir_config('lonTabDir');   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
     my $include = $r->dir_config('lonIncludes');  
     my $expire  = $r->dir_config('lonExpire');      my $lonhost = $r->dir_config('lonHostID');
     my $version = $r->dir_config('lonVersion');      my $domain = &Apache::lonnet::default_login_domain();
     my $host_name = &Apache::lonnet::hostname($lonhost);      my $defdom = $domain;
       if ($lonhost ne '') {
 # --------------------------------------------- Default values for login fields          unless ($sessiondata{'sessionserver'}) {
               my $redirect = &check_loginvia($domain,$lonhost);
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');              if ($redirect) {
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);                  $r->print($redirect);
                   return OK;
 # ---------------------------------------------------------- Determine own load              }
     my $loadavg;          }
     {      }
  my $loadfile=Apache::File->new('/proc/loadavg');  
  $loadavg=<$loadfile>;      if (($sessiondata{'domain'}) &&
     }          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     $loadavg =~ s/\s.*//g;          $domain=$sessiondata{'domain'};
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);      } elsif (($env{'form.domain'}) &&
     my $userloadpercent=&Apache::lonnet::userload();   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
    $domain=$env{'form.domain'};
 # ------------------------------------------------------- Do the load balancing      }
     my $otherserver= &Apache::lonnet::absolute_url($host_name);  
     my $firsturl=      my $role    = $r->dir_config('lonRole');
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});      my $loadlim = $r->dir_config('lonLoadLim');
 # ---------------------------------------------------------- Are we overloaded?      my $uloadlim= $r->dir_config('lonUserLoadLim');
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {      my $servadm = $r->dir_config('lonAdmEMail');
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);      my $tabdir  = $r->dir_config('lonTabDir');
  if ($unloaded) { $otherserver=$unloaded; }      my $include = $r->dir_config('lonIncludes');
     }      my $expire  = $r->dir_config('lonExpire');
       my $version = $r->dir_config('lonVersion');
 # ----------------------------------------------------------- Get announcements      my $host_name = &Apache::lonnet::hostname($lonhost);
     my $announcements=&Apache::lonnet::getannounce();  
 # -------------------------------------------------------- Set login parameters  # --------------------------------------------- Default values for login fields
      
     my @hexstr=('0','1','2','3','4','5','6','7',      my ($authusername,$authdomain);
                 '8','9','a','b','c','d','e','f');      if ($sessiondata{'username'}) {
     my $lkey='';          $authusername=$sessiondata{'username'};
     for (0..7) {      } else {
         $lkey.=$hexstr[rand(15)];          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
     }          $authusername=($env{'form.username'}?$env{'form.username'}:'');
       }
     my $ukey='';      if ($sessiondata{'domain'}) {
     for (0..7) {          $authdomain=$sessiondata{'domain'};
         $ukey.=$hexstr[rand(15)];      } else {
     }          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
           $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
     my $lextkey=hex($lkey);      }
     if ($lextkey>2147483647) { $lextkey-=4294967296; }  
   # ---------------------------------------------------------- Determine own load
     my $uextkey=hex($ukey);      my $loadavg;
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      {
    my $loadfile=Apache::File->new('/proc/loadavg');
 # -------------------------------------------------------- Store away log token   $loadavg=<$loadfile>;
     my $logtoken=Apache::lonnet::reply(      }
        'tmpput:'.$ukey.$lkey.'&'.$firsturl,      $loadavg =~ s/\s.*//g;
        $lonhost);  
       my ($loadpercent,$userloadpercent);
 # ------------------- If we cannot talk to ourselves, we are in serious trouble      if ($loadlim) {
           $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
     if ($logtoken eq 'con_lost') {      }
         my $spares='';      if ($uloadlim) {
  my $last;          $userloadpercent=&Apache::lonnet::userload();
         foreach my $hostid (sort      }
     {  
  &Apache::lonnet::hostname($a) cmp      my $firsturl=
     &Apache::lonnet::hostname($b);      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
     }  
     keys(%Apache::lonnet::spareid)) {  # ----------------------------------------------------------- Get announcements
             next if ($hostid eq $lonhost);      my $announcements=&Apache::lonnet::getannounce();
     my $hostname = &Apache::lonnet::hostname($hostid);  # -------------------------------------------------------- Set login parameters
     next if ($last eq $hostname);  
             $spares.='<br /><font size="+1"><a href="http://'.      my @hexstr=('0','1','2','3','4','5','6','7',
                 $hostname.                  '8','9','a','b','c','d','e','f');
                 '/adm/login?domain='.$authdomain.'">'.      my $lkey='';
                 $hostname.'</a>'.      for (0..7) {
                 ' '.&mt('(preferred)').'</font>'.$/;          $lkey.=$hexstr[rand(15)];
     $last=$hostname;      }
         }  
         $spares.= '<br />';      my $ukey='';
  my %all_hostnames = &Apache::lonnet::all_hostnames();      for (0..7) {
         foreach my $hostid (sort          $ukey.=$hexstr[rand(15)];
     {      }
  &Apache::lonnet::hostname($a) cmp  
     &Apache::lonnet::hostname($b);      my $lextkey=hex($lkey);
     }      if ($lextkey>2147483647) { $lextkey-=4294967296; }
     keys(%all_hostnames)) {  
             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});      my $uextkey=hex($ukey);
     my $hostname = &Apache::lonnet::hostname($hostid);      if ($uextkey>2147483647) { $uextkey-=4294967296; }
             next if ($last eq $hostname);  
             $spares.='<br /><a href="http://'.  # -------------------------------------------------------- Store away log token
                 $hostname.      my $tokenextras;
                 '/adm/login?domain='.$authdomain.'">'.      if ($env{'form.role'}) {
                 $hostname.'</a>';          $tokenextras = '&role='.&escape($env{'form.role'});
     $last=$hostname;      }
         }      if ($env{'form.symb'}) {
  $r->print(          if (!$tokenextras) {
            '<html>'              $tokenextras = '&';
           .'<head><title>'          }
           .&mt('The LearningOnline Network with CAPA')          $tokenextras .= '&symb='.&escape($env{'form.symb'});
           .'</title></head>'      }
           .'<body bgcolor="#FFFFFF">'      if ($env{'form.iptoken'}) {
           .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'          if (!$tokenextras) {
           .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'              $tokenextras = '&&';
           .'<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>'          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
           .$spares      }
           .'</body>'      my $logtoken=Apache::lonnet::reply(
           .'</html>'         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
         );         $lonhost);
         return OK;  
     }  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
   #    we are in serious trouble
 # ----------------------------------------------- Apparently we are in business  
     $servadm=~s/\,/\<br \/\>/g;      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
           if ($logtoken eq 'no_such_host') {
 # ----------------------------------------------------------- Front page design              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
     my $pgbg=          }
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');          my $spares='';
     my $font=   my $last;
       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');          foreach my $hostid (sort
     my $link=      {
       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');   &Apache::lonnet::hostname($a) cmp
     my $vlink=      &Apache::lonnet::hostname($b);
       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');      }
     my $alink=&Apache::loncommon::designparm('login.alink',$domain);      keys(%Apache::lonnet::spareid)) {
     my $mainbg=              next if ($hostid eq $lonhost);
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');      my $hostname = &Apache::lonnet::hostname($hostid);
     my $sidebg=      next if (($last eq $hostname) || ($hostname eq ''));
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');              $spares.='<br /><font size="+1"><a href="http://'.
     my $textcol =                   $hostname.
       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');                  '/adm/login?domain='.$authdomain.'">'.
     my $bgcol =                  $hostname.'</a>'.
       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');                  ' '.&mt('(preferred)').'</font>'.$/;
     my $logo=&Apache::loncommon::designparm('login.logo',$domain);      $last=$hostname;
     my $img=&Apache::loncommon::designparm('login.img',$domain);          }
     my $domainlogo=&Apache::loncommon::domainlogo($domain);          if ($spares) {
     my $login=&Apache::loncommon::designparm('login.login',$domain);              $spares.= '<br />';
     if ($login eq '') {          }
         $login = $iconpath.'/'.&mt('userauthentication.gif');          my %all_hostnames = &Apache::lonnet::all_hostnames();
     }          foreach my $hostid (sort
     my $showbanner = 1;      {
     my $showmainlogo = 1;   &Apache::lonnet::hostname($a) cmp
     if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {      &Apache::lonnet::hostname($b);
         $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);      }
     }      keys(%all_hostnames)) {
     if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
         $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);              my $hostname = &Apache::lonnet::hostname($hostid);
     }              next if (($last eq $hostname) || ($hostname eq ''));
     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);              $spares.='<br /><a href="http://'.
     my $showcoursecat =               $hostname.
         &Apache::loncommon::designparm('login.coursecatalog',$domain);               '/adm/login?domain='.$authdomain.'">'.
     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);               $hostname.'</a>';
     my $shownewuserlink =               $last=$hostname;
         &Apache::loncommon::designparm('login.newuser',$domain);           }
     my $now=time;           $r->print(
     my $js = (<<ENDSCRIPT);     '<html>'
     .'<head><title>'
  <script type="text/javascript">    .&mt('The LearningOnline Network with CAPA')
     function send()    .'</title></head>'
     {    .'<body bgcolor="#FFFFFF">'
         this.document.server.elements.uname.value    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
        =this.document.client.elements.uname.value;    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
     .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
         this.document.server.elements.udom.value          if ($spares) {
        =this.document.client.elements.udom.value;              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
                        .'</p>'
         this.document.server.elements.imagesuppress.value                       .$spares);
        =this.document.client.elements.imagesuppress.checked;          }
           $r->print('</body>'
         this.document.server.elements.embedsuppress.value                   .'</html>'
        =this.document.client.elements.embedsuppress.checked;          );
           return OK;
         this.document.server.elements.appletsuppress.value      }
        =this.document.client.elements.appletsuppress.checked;  
   # ----------------------------------------------- Apparently we are in business
         this.document.server.elements.fontenhance.value      $servadm=~s/\,/\<br \/\>/g;
        =this.document.client.elements.fontenhance.checked;  
   # ----------------------------------------------------------- Front page design
         this.document.server.elements.blackwhite.value      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
        =this.document.client.elements.blackwhite.checked;      my $font=&Apache::loncommon::designparm('login.font',$domain);
       my $link=&Apache::loncommon::designparm('login.link',$domain);
         this.document.server.elements.remember.value      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
        =this.document.client.elements.remember.checked;      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
       my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
         uextkey=this.document.client.elements.uextkey.value;      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
         lextkey=this.document.client.elements.lextkey.value;      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
         initkeys();      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
       my $logo=&Apache::loncommon::designparm('login.logo',$domain);
         this.document.server.elements.upass0.value      my $img=&Apache::loncommon::designparm('login.img',$domain);
             =crypted(this.document.client.elements.upass$now.value.substr(0,15));      my $domainlogo=&Apache::loncommon::domainlogo($domain);
         this.document.server.elements.upass1.value      my $showbanner = 1;
             =crypted(this.document.client.elements.upass$now.value.substr(15,15));      my $showmainlogo = 1;
         this.document.server.elements.upass2.value      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
             =crypted(this.document.client.elements.upass$now.value.substr(30,15));          $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
       }
         this.document.client.elements.uname.value='';      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
         this.document.client.elements.upass$now.value='';          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
       }
         this.document.server.submit();      my $showadminmail;
         return false;      my @possdoms = &Apache::lonnet::current_machine_domains();
     }      if (grep(/^\Q$domain\E$/,@possdoms)) {
  </script>          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
       }
 ENDSCRIPT      my $showcoursecat =
           &Apache::loncommon::designparm('login.coursecatalog',$domain);
 # --------------------------------------------------- Print login screen header      my $shownewuserlink =
           &Apache::loncommon::designparm('login.newuser',$domain);
     my %add_entries = (topmargin    => "0",      my $showhelpdesk =
                        leftmargin   => "0",          &Apache::loncommon::designparm('login.helpdesk',$domain);
                        marginheight => "0",      my $now=time;
                        marginwidth  => "0",      my $js = (<<ENDSCRIPT);
                        bgcolor      => "$pgbg",  
                        text         => "$font",  <script type="text/javascript" language="JavaScript">
                        link         => "$link",  // <![CDATA[
                        vlink        => "$vlink",  function send()
                        alink        => "$alink",);  {
   this.document.server.elements.uname.value
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,  =this.document.client.elements.uname.value;
                                        { 'redirect'       => [$expire,'/adm/roles'],   
                                          'add_entries' => \%add_entries,  this.document.server.elements.udom.value
                                          'only_body'   => 1,}));  =this.document.client.elements.udom.value;
   
 # ----------------------------------------------------------------------- Texts  uextkey=this.document.client.elements.uextkey.value;
   lextkey=this.document.client.elements.lextkey.value;
 my %lt=&Apache::lonlocal::texthash(  initkeys();
   'un'  => 'Username',  
   'pw'  => 'Password',  this.document.server.elements.upass0.value
   'dom' => 'Domain',      =this.document.client.elements.upass$now.value.substr(0,15);
   'load' => 'Server Load',  this.document.server.elements.upass1.value
                   'userload' => 'User Load',      =this.document.client.elements.upass$now.value.substr(15,15);
                   'about'  => 'About LON-CAPA',  this.document.server.elements.upass2.value
                   'access' => 'Accessibility Options',      =this.document.client.elements.upass$now.value.substr(30,15);
                   'catalog' => 'Course Catalog',  
   'log' => 'Log in',  if(this.document.server.action.substr(0,5) === 'http:'){
   'help' => 'Log-in Help',      for (var idx in [1,2,3]){
   'serv' => 'Server',          this.document.server.elements['upass' + idx].value =
                   'servadm' => 'Server Administration',              crypted(this.document.server.elements['upass' + idx].value);
                   'helpdesk' => 'Contact Helpdesk',      }
                   'forgotpw' => 'Forgot password?',  }
                   'newuser'  => 'New User?',  
                   'options_headline' => 'Select Accessibility Options',  this.document.client.elements.uname.value='';
                   'sprs_img' => 'Suppress rendering of images',  this.document.client.elements.upass$now.value='';
                   'sprs_applet' => 'Suppress Java applets',  
                   'sprs_embed' => 'Suppress rendering of embedded multimedia',  this.document.server.submit();
                   'sprs_font' => 'Increase font size',  return false;
                   'sprs_blackwhite' => 'Switch to black and white mode',  }
                   'remember' => 'Remember these settings for next login');  
 # -------------------------------------------------- Change password field name  function enableInput() {
     my $forgotpw = &forgotpwdisplay(%lt);      this.document.client.elements.upass$now.removeAttribute("readOnly");
     my $loginhelp = &loginhelpdisplay(%lt);      this.document.client.elements.uname.removeAttribute("readOnly");
       this.document.client.elements.udom.removeAttribute("readOnly");
 # ---------------------------------------------------- Serve out DES JavaScript      return;
     {  }
         my $jsh=Apache::File->new($include."/londes.js");  
         $r->print(<$jsh>);  // ]]>
     }  </script>
 # ---------------------------------------------------------- Serve rest of page  
   ENDSCRIPT
     if ($fullgraph) {  
  $r->print(  # --------------------------------------------------- Print login screen header
   '<table width="100%" cellpadding="0" cellspacing="0" border="0">');  
     }      my %add_entries = (
          bgcolor      => "$mainbg",
     $r->print(<<ENDSERVERFORM);         text         => "$font",
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">         link         => "$link",
    <input type="hidden" name="logtoken" value="$logtoken" />         vlink        => "$vlink",
    <input type="hidden" name="serverid" value="$lonhost" />         alink        => "$alink",
    <input type="hidden" name="interface" value="$env{'form.interface'}" />                 onload       => 'javascript:enableInput();',);
    <input type="hidden" name="uname" value="" />  
    <input type="hidden" name="upass0" value="" />      my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
    <input type="hidden" name="upass1" value="" />      @hosts = &Apache::lonnet::current_machine_ids();
    <input type="hidden" name="upass2" value="" />      $lonhost_in_use = $lonhost;
    <input type="hidden" name="udom" value="" />      if (@hosts > 1) {
    <input type="hidden" name="imagesuppress"  value="" />          foreach my $hostid (@hosts) {
    <input type="hidden" name="appletsuppress"  value="" />              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
    <input type="hidden" name="embedsuppress"  value="" />                  $lonhost_in_use = $hostid;
    <input type="hidden" name="fontenhance"  value="" />                  last;
    <input type="hidden" name="blackwhite"  value="" />              }
    <input type="hidden" name="remember"  value="" />          }
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />      }
    <input type="hidden" name="localres" value="$env{'form.localres'}" />      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
   </form>      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
 ENDSERVERFORM      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
     my $coursecatalog;      if ($headextra) {
     if (($showcoursecat eq '') || ($showcoursecat)) {          my $omitextra;
         $coursecatalog = &coursecatalog_link($lt{'catalog'});          if ($headextra_exempt ne '') {
     }              my @exempt = split(',',$headextra_exempt);
     my $newuserlink;              my $ip = $ENV{'REMOTE_ADDR'};
     if ($shownewuserlink) {              if (grep(/^\Q$ip\E$/,@exempt)) {
         $newuserlink = &newuser_link($lt{'newuser'});                  $omitextra = 1;
     }              }
     if ($fullgraph) {          }
         $r->print(<<HEADER);          unless ($omitextra) {
   <!-- The LON-CAPA Header -->              my $confname = $defdom.'-domainconfig';
   <tr>              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
                   my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
    <!-- Row 1 Columns 2-4 -->                  unless ($extra eq '-1') {
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg">                      $js .= "\n".$extra."\n";
 HEADER                  }
         if ($showbanner) {              }
             $r->print(<<ENDBANNER);          }
 <img src="$img" border="0" alt="The Learning Online Network with CAPA" />      }
 ENDBANNER  
         }      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
         $r->print(<<ENDSTART);         { 'redirect'       => [$expire,'/adm/roles'],
    </td>   'add_entries' => \%add_entries,
   </tr>   'only_body'   => 1,}));
   
   <!-- The gray bar that starts the two table frames -->  # ----------------------------------------------------------------------- Texts
   <tr>  
       my %lt=&Apache::lonlocal::texthash(
    <!-- Row 2 Column 1 -->            'un'       => 'Username',
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>            'pw'       => 'Password',
             'dom'      => 'Domain',
    <!-- Row 2 Column 2 -->            'perc'     => 'percent',
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>            'load'     => 'Server Load',
             'userload' => 'User Load',
    <!-- Row 2 Column 3 -->            'catalog'  => 'Course/Community Catalog',
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>            'log'      => 'Log in',
             'help'     => 'Log-in Help',
    <!-- Row 2 Column 4 -->            'serv'     => 'Server',
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>            'servadm'  => 'Server Administration',
   </tr>            'helpdesk' => 'Contact Helpdesk',
   <tr>            'forgotpw' => 'Forgot password?',
                'newuser'  => 'New User?',
    <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->         );
    <!-- Row 3 Column 1 -->  # -------------------------------------------------- Change password field name
    <td valign="top" height="60" align="left" bgcolor="$sidebg">  
     <table cellpadding="0" cellspacing="2" border="0">      my $forgotpw = &forgotpwdisplay(%lt);
      <tr>      $forgotpw .= '<br />' if $forgotpw;
       <td>&nbsp;</td>      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
       <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>      if ($loginhelp) {
      </tr>          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
      <tr>      }
       <td>&nbsp;</td>  
       <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>  # ---------------------------------------------------- Serve out DES JavaScript
      </tr>$coursecatalog      {
      <tr>      my $jsh=Apache::File->new($include."/londes.js");
       <td colspan="2">&nbsp;</td>      $r->print(<$jsh>);
      </tr>      }
     </table>  # ---------------------------------------------------------- Serve rest of page
    </td>  
    <!-- The shaded space between the two main columns -->      $r->print(
    <!-- Row 3 Column 2 -->      '<div class="LC_Box"'
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
   );
    <!-- The right main column holding the large LON-CAPA logo-->  
    <!-- Rows 3-4 Column 3 -->      $r->print(<<ENDSERVERFORM);
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">  <form name="server" action="/adm/authenticate" method="post" target="_top">
 ENDSTART     <input type="hidden" name="logtoken" value="$logtoken" />
         if ($showmainlogo) {     <input type="hidden" name="serverid" value="$lonhost" />
             $r->print(<<ENDLOGO);     <input type="hidden" name="uname" value="" />
     <center>     <input type="hidden" name="upass0" value="" />
      <img src="$logo" alt="" />     <input type="hidden" name="upass1" value="" />
     </center>     <input type="hidden" name="upass2" value="" />
 ENDLOGO     <input type="hidden" name="udom" value="" />
         }     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
         $r->print(<<ENDTOP);     <input type="hidden" name="localres" value="$env{'form.localres'}" />
    </td>    </form>
   ENDSERVERFORM
    <!-- Row 3 Column 4 -->      my $coursecatalog;
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>      if (($showcoursecat eq '') || ($showcoursecat)) {
   </tr>          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
   <tr>      }
       my $newuserlink;
    <!-- The entry form -->      if ($shownewuserlink) {
    <!-- Row 4 Column 1 -->          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
    <td align="center" valign="middle" bgcolor="$sidebg">      }
 ENDTOP      my $logintitle =
     } else {          '<h2 class="LC_hcell"'
         $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'         .' style="background:'.$loginbox_header_bgcol.';'
                  .'<h2>'.&mt('Text-based Interface Login').'</h2>'         .' color:'.$loginbox_header_textcol.'">'
                  .$announcements);         .$lt{'log'}
     }         .'</h2>';
     $r->print('<form name="client" onsubmit="return(send())">');  
     unless ($fullgraph) {      my $noscript_warning='<noscript><span class="LC_warning"><b>'
         $r->print(<<ENDACCESSOPTIONS);                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
 <h3>$lt{'options_headline'}</h3>                          .'</b></span></noscript>';
 <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />      my $helpdeskscript;
 <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
 <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />                                         $authdomain,\$helpdeskscript,
 <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />                                         $showhelpdesk,\@possdoms);
 <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />  
 <br />      my $mobileargs;
 <input type="checkbox" name="remember" /> $lt{'remember'}<hr />      if ($clientmobile) {
 ENDACCESSOPTIONS          $mobileargs = 'autocapitalize="off" autocorrect="off"';
     } else {      }
         $r->print(<<ENDNOOPT);      my $loginform=(<<LFORM);
 <input type="hidden" name="imagesuppress"  value="" />  <form name="client" action="" onsubmit="return(send())">
 <input type="hidden" name="embedsuppress"  value="" />    <input type="hidden" name="lextkey" value="$lextkey" />
 <input type="hidden" name="appletsuppress"  value="" />    <input type="hidden" name="uextkey" value="$uextkey" />
 <input type="hidden" name="fontenhance"  value="" />    <b><label for="uname">$lt{'un'}</label>:</b><br />
 <input type="hidden" name="blackwhite"  value="" />    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
 <input type="hidden" name="remember"  value="" />    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
 ENDNOOPT    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
     }    <b><label for="udom">$lt{'dom'}</label>:</b><br />
     my $logintitle;    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
     if ($loginheader eq 'text') {    <input type="submit" value="$lt{'log'}" />
         $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';  </form>
     } else {  LFORM
         $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.  
                       &mt('User Authentication').'" /></td>';      if ($showbanner) {
     }          $r->print(<<HEADER);
     my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'  <!-- The LON-CAPA Header -->
                         .'<noscript><div class="LC_warning"><font size="-1">'  <div style="background:$pgbg;margin:0;width:100%;">
                         .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')    <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
                         .'</font></div></noscript></td>';  </div>
     $r->print(<<ENDLOGIN);  HEADER
      <input type="hidden" name="lextkey" value="$lextkey" />      }
      <input type="hidden" name="uextkey" value="$uextkey" />      $r->print(<<ENDTOP);
   <div style="float:left;margin-top:0;">
      <!-- Start the sub-table for text and input alignment -->  <div class="LC_Box" style="background:$loginbox_bg;">
      <table border="0" cellspacing="0" cellpadding="0">    $logintitle
       <tr>$logintitle</tr>    $loginform
       <tr>$noscript_warning</tr>    $noscript_warning
       <tr>  </div>
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>   
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>  <div class="LC_Box" style="padding-top: 10px;">
       </tr>    $loginhelp
       <tr>    $forgotpw
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="upass$now">$lt{'pw'}</label>:</b></font></td>    $contactblock
        <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>    $newuserlink
       </tr>    $coursecatalog
       <tr>  </div>
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="udom">$lt{'dom'}</label>:</b></font></td>  </div>
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>  
       </tr>  <div>
       <tr>  ENDTOP
        <td bgcolor="$mainbg">&nbsp;</td>      if ($showmainlogo) {
        <td bgcolor="$mainbg" valign="bottom" align="center">          $r->print(' <img src="'.$logo.'" alt="" />'."\n");
         <br />      }
         <input type="submit" value="$lt{'log'}" />  $r->print(<<ENDTOP);
        </td>  $announcements
       </tr>  </div>
       <tr>  <hr style="clear:both;" />
        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">  ENDTOP
         $loginhelp      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
         $forgotpw      $domainrow = <<"END";
         $newuserlink        <tr>
         <br />         <td  align="left" valign="top">
        </td>          <small><b>$lt{'dom'}:&nbsp;</b></small>
       </tr>         </td>
      </table>         <td  align="left" valign="top">
      <!-- End sub-table -->          <small><tt>&nbsp;$domain</tt></small>
     </form>         </td>
 ENDLOGIN        </tr>
     if ($fullgraph) {  END
         my $helpdeskscript;      $serverrow = <<"END";
         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,        <tr>
                                   $version,$authdomain,\$helpdeskscript);         <td  align="left" valign="top">
  $r->print(<<ENDDOCUMENT);          <small><b>$lt{'serv'}:&nbsp;</b></small>
    </td>         </td>
          <td align="left" valign="top">
    <!-- Row 4 Column 2 -->          <small><tt>&nbsp;$lonhost ($role)</tt></small>
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>         </td>
         </tr>
    <!-- Row 4 Column 3 -->  END
 <td bgcolor="$mainbg">$announcements</td>      if ($loadlim) {
           $loadrow = <<"END";
    <!-- Row 4 Column 4 -->        <tr>
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>         <td align="left" valign="top">
   </tr>          <small><b>$lt{'load'}:&nbsp;</b></small>
   <tr>         </td>
          <td align="left" valign="top">
    <!-- Row 5 Column 1 -->          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
    <td bgcolor="$sidebg" valign="middle" align="left">         </td>
      <br />        </tr>
      <table border="0" cellspacing="0" cellpadding="0">  END
       <tr>      }
        <td bgcolor="$sidebg" align="left" valign="top">      if ($uloadlim) {
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>          $userloadrow = <<"END";
        </td>        <tr>
        <td bgcolor="$sidebg" align="left" valign="middle">         <td align="left" valign="top">
         <small><tt>&nbsp;$domain</tt></small>          <small><b>$lt{'userload'}:&nbsp;</b></small>
        </td>         </td>
       </tr>         <td align="left" valign="top">
       <tr>          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
        <td bgcolor="$sidebg" align="left" valign="top">         </td>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>        </tr>
        </td>  END
        <td bgcolor="$sidebg" align="left" valign="middle">      }
         <small><tt>&nbsp;$lonhost ($role)</tt></small>      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
        </td>          $versionrow = <<"END";
       </tr>        <tr>
       <tr>         <td colspan="2" align="left">
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">          <small>$version</small>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small></span>         </td>
        </td>        </tr>
        <td bgcolor="$sidebg" align="left" valign="middle">  END
         <small><tt>&nbsp;$loadpercent%</tt></small>      }
        </td>  
       </tr>      $r->print(<<ENDDOCUMENT);
       <tr>      <div style="float: left;">
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">       <table border="0" cellspacing="0" cellpadding="0">
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small></span>  $domainrow
        </td>  $serverrow
        <td bgcolor="$sidebg" align="left" valign="middle">  $loadrow    
         <small><tt>&nbsp;$userloadpercent%</tt></small>  $userloadrow
        </td>  $versionrow
       </tr>       </table>
      </table>      </div>
      <br />      <div style="float: right;">
     $contactblock      $domainlogo
    </td>      </div>
       <br style="clear:both;" />
    <!-- Row 5 Column 2 -->   </div>
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  
   <script type="text/javascript">
    <!-- Row 5 Column 3 -->  // <![CDATA[
    <td width="100%" valign="bottom" bgcolor="$mainbg">  // the if prevents the script error if the browser can not handle this
 $domainlogo  if ( document.client.uname ) { document.client.uname.focus(); }
 </td>  // ]]>
   </script>
    <!-- Row 5 Column 4 -->  $helpdeskscript
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>  
   </tr>  ENDDOCUMENT
   <tr>      my %endargs = ( 'noredirectlink' => 1, );
       $r->print(&Apache::loncommon::end_page(\%endargs));
    <!-- Row 6 Column 1 -->      return OK;
    <td bgcolor="$sidebg">&nbsp;</td>  }
   
    <!-- Row 6 Column 2 -->  sub check_loginvia {
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>      my ($domain,$lonhost) = @_;
       if ($domain eq '' || $lonhost eq '') {
    <!-- Row 6 Column 3 -->          return;
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>      }
       my %domconfhash = &Apache::loncommon::get_domainconf($domain);
    <!-- Row 6 Column 4 -->      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
   </tr>      my $output;
  </table>      if ($loginvia ne '') {
           my $noredirect;
 <script type="text/javascript">          my $ip = $ENV{'REMOTE_ADDR'};
 // the if prevents the script error if the browser can not handle this          if ($ip eq '127.0.0.1') {
 if ( document.client.uname ) { document.client.uname.focus(); }              $noredirect = 1;
 </script>          } else {
 $helpdeskscript              if ($loginvia_exempt ne '') {
                   my @exempt = split(',',$loginvia_exempt);
 ENDDOCUMENT                  if (grep(/^\Q$ip\E$/,@exempt)) {
 }                      $noredirect = 1;
     my %endargs = ( 'noredirectlink' => 1, );                  }
     $r->print(&Apache::loncommon::end_page(\%endargs));              }
     return OK;          }
 }          unless ($noredirect) {
               my ($newhost,$path);
 sub contactdisplay {              if ($loginvia =~ /:/) {
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;                  ($newhost,$path) = split(':',$loginvia);
     my $contactblock;              } else {
     my $showhelpdesk = 0;                  $newhost = $loginvia;
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};              }
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {              if ($newhost ne $lonhost) {
         $showhelpdesk = 1;                  if (&Apache::lonnet::hostname($newhost) ne '') {
     }                      $output = &redirect_page($newhost,$path);
     if ($servadm && $showadminmail) {                  }
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.              }
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';          }
     }      }
     if ($showhelpdesk) {      return $output;
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';  }
         my $thisurl = &escape('/adm/login');  
         $$helpdeskscript = <<"ENDSCRIPT";  sub redirect_page {
 <script type="text/javascript">      my ($desthost,$path) = @_;
 function helpdesk() {      my $protocol = $Apache::lonnet::protocol{$desthost};
     var codedom = document.client.udom.value;      $protocol = 'http' if ($protocol ne 'https');
     if (codedom == '') {      unless ($path =~ m{^/}) {
         codedom = "$authdomain";          $path = '/'.$path;
     }      }
     var querystr = "origurl=$thisurl&codedom="+codedom;      my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
     document.location.href = "/adm/helpdesk?"+querystr;      if ($env{'form.firsturl'} ne '') {
     return;          $url .='?firsturl='.$env{'form.firsturl'};
 }      }
 </script>      my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
 ENDSCRIPT                                                      {'redirect' => [0,$url],});
     }      my $end_page   = &Apache::loncommon::end_page();
     $contactblock .= <<"ENDBLOCK";      return $start_page.$end_page;
      &nbsp;&nbsp;&nbsp;$version  }
 ENDBLOCK  
     return $contactblock;  sub contactdisplay {
 }      my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
           $possdoms) = @_;
 sub forgotpwdisplay {      my $contactblock;
     my (%lt) = @_;      my $origmail;
     my $prompt_for_resetpw = 1;       if (ref($possdoms) eq 'ARRAY') {
     if ($prompt_for_resetpw) {          if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br />';              $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
     }          }
     return;      }
 }      my $requestmail =
           &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
 sub loginhelpdisplay {                                                   $authdomain,$origmail);
     my (%lt) = @_;      unless ($showhelpdesk eq '0') {
     my $login_help = 1;          if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
     if ($login_help) {              $showhelpdesk = 1;
         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';          } else {
     }              $showhelpdesk = 0;
     return;          }
 }      }
       if ($servadm && $showadminmail) {
 sub coursecatalog_link {          $contactblock .= $$lt{'servadm'}.':<br />'.
     my ($linkname) = @_;                           '<tt>'.$servadm.'</tt><br />';
     return <<"END";      }
      <tr>      if ($showhelpdesk) {
       <td>&nbsp;</td>          $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
       <td><a href="/adm/coursecatalog"><b>$linkname</b></a></td>          my $thisurl = &escape('/adm/login');
      </tr>          $$helpdeskscript = <<"ENDSCRIPT";
 END  <script type="text/javascript">
 }  // <![CDATA[
   function helpdesk() {
 sub newuser_link {      var possdom = document.client.udom.value;
     my ($linkname) = @_;      var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
     return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';      if (codedom == '') {
 }          codedom = "$authdomain";
       }
 1;      var querystr = "origurl=$thisurl&codedom="+codedom;
 __END__      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.1.106.4.1  
changed lines
  Added in v.1.164

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