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Diff for /loncom/auth/lonlogin.pm between versions 1.106.4.4 and 1.171

version 1.106.4.4, 2010/02/09 17:46:44 version 1.171, 2017/09/25 00:36:30
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # Login Screen  # Login Screen
 #  #
 # $Id$  # $Id$
 #  #
 # Copyright Michigan State University Board of Trustees  # Copyright Michigan State University Board of Trustees
 #  #
 # This file is part of the LearningOnline Network with CAPA (LON-CAPA).  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #  #
 # LON-CAPA is free software; you can redistribute it and/or modify  # LON-CAPA is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by  # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or  # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.  # (at your option) any later version.
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
 # You should have received a copy of the GNU General Public License  # You should have received a copy of the GNU General Public License
 # along with LON-CAPA; if not, write to the Free Software  # along with LON-CAPA; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #  #
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
 package Apache::lonlogin;  package Apache::lonlogin;
   
 use strict;  use strict;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File ();  use Apache::File ();
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonauth();  use Apache::lonauth();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::migrateuser();  use Apache::migrateuser();
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA;  use LONCAPA;
    use CGI::Cookie();
 sub handler {   
     my $r = shift;  sub handler {
       my $r = shift;
     &Apache::loncommon::get_unprocessed_cgi  
  (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},      &Apache::loncommon::get_unprocessed_cgi
       $ENV{'REDIRECT_QUERY_STRING'}),   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
  ['interface','username','domain','firsturl','localpath','localres',        $ENV{'REDIRECT_QUERY_STRING'}),
   'token','role','symb']);   ['interface','username','domain','firsturl','localpath','localres',
     if (!defined($env{'form.firsturl'})) {    'token','role','symb','iptoken']);
         &Apache::lonacc::get_posted_cgi($r,['firsturl']);      if (!defined($env{'form.firsturl'})) {
     }          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
       }
 # -- check if they are a migrating user  
     if (defined($env{'form.token'})) {  # -- check if they are a migrating user
  return &Apache::migrateuser::handler($r);      if (defined($env{'form.token'})) {
     }   return &Apache::migrateuser::handler($r);
       }
     &Apache::loncommon::no_cache($r);  
     &Apache::lonlocal::get_language_handle($r);  # For "public user" - remove any exising "public" cookie, as user really wants to log-in
     &Apache::loncommon::content_type($r,'text/html');      my ($handle,$lonidsdir,$expirepub,$userdom);
     $r->send_http_header;      unless ($r->header_only) {
     return OK if $r->header_only;          $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
           if ($handle ne '') {
               $lonidsdir=$r->dir_config('lonIDsDir');
 # Are we re-routing?              if ($handle=~/^publicuser\_/) {
     if (-e '/home/httpd/html/lon-status/reroute.txt') {                  unlink($r->dir_config('lonIDsDir')."/$handle.id");
  &Apache::lonauth::reroute($r);                  undef($handle);
  return OK;                  undef($userdom);
     }                  $expirepub = 1;
               }
           }
 # -------------------------------- Prevent users from attempting to login twice      }
     my $handle = &Apache::lonnet::check_for_valid_session($r);  
     if ($handle=~/^publicuser\_/) {      &Apache::loncommon::no_cache($r);
 # For "public user" - remove it, we apparently really want to login      &Apache::lonlocal::get_language_handle($r);
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      &Apache::loncommon::content_type($r,'text/html');
     } elsif ($handle ne '') {      if ($expirepub) {
 # Indeed, a valid token is found          my $c = new CGI::Cookie(-name    => 'lonPubID',
  my $start_page =                                   -value   => '',
     &Apache::loncommon::start_page('Already logged in');                                  -expires => '-10y',);
  my $end_page =           $r->header_out('Set-cookie' => $c);
     &Apache::loncommon::end_page();      } elsif (($handle eq '') && ($userdom ne '')) {
         my $dest = '/adm/roles';          my $c = new CGI::Cookie(-name    => 'lonID',
         if ($env{'form.firsturl'} ne '') {                                  -value   => '',
             $dest = $env{'form.firsturl'};                                  -expires => '-10y',);
         }          $r->headers_out->add('Set-cookie' => $c);
  $r->print(      }
                   $start_page      $r->send_http_header;
                  .'<h1>'.&mt('You are already logged in!').'</h1>'      return OK if $r->header_only;
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',  
                   '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'  
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'  # Are we re-routing?
                  .$end_page      my $londocroot = $r->dir_config('lonDocRoot');
                  );      if (-e "$londocroot/lon-status/reroute.txt") {
         return OK;   &Apache::lonauth::reroute($r);
     }   return OK;
       }
 # ---------------------------------------------------- No valid token, continue  
   #
  # ---------------------------- Not possible to really login to domain "public"  # If browser sent an old cookie for which the session file had been removed
     if ($env{'form.domain'} eq 'public') {  # check if configuration for user's domain has a portal URL set.  If so
  $env{'form.domain'}='';  # switch user's log-in to the portal.
  $env{'form.username'}='';  #
     }  
 # ----------------------------------------------------------- Process Interface      if (($handle eq '') && ($userdom ne '')) {
     $env{'form.interface'}=~s/\W//g;          my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
           if ($domdefaults{'portal_def'} =~ /^https?\:/) {
     my $textbrowsers=$r->dir_config('lonTextBrowsers');              my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};                                            {'redirect' => [0,$domdefaults{'portal_def'}],});
                   my $end_page   = &Apache::loncommon::end_page();
     foreach (split(/\:/,$textbrowsers)) {              $r->print($start_page.$end_page);
  if ($httpbrowser=~/$_/i) {              return OK;
     $env{'form.interface'}='textual';          }
         }      }
     }  
       $env{'form.firsturl'} =~ s/(`)/'/g;
     my $fullgraph=($env{'form.interface'} ne 'textual');  
   # -------------------------------- Prevent users from attempting to login twice
     my $iconpath=       if ($handle ne '') {
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));          &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
    my $start_page =
     my $domain = &Apache::lonnet::default_login_domain();      &Apache::loncommon::start_page('Already logged in');
     if (($env{'form.domain'}) &&    my $end_page =
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {      &Apache::loncommon::end_page();
  $domain=$env{'form.domain'};          my $dest = '/adm/roles';
     }          if ($env{'form.firsturl'} ne '') {
     my $role    = $r->dir_config('lonRole');              $dest = $env{'form.firsturl'};
     my $loadlim = $r->dir_config('lonLoadLim');          }
     my $servadm = $r->dir_config('lonAdmEMail');   $r->print(
     my $lonhost = $r->dir_config('lonHostID');                    $start_page
     my $tabdir  = $r->dir_config('lonTabDir');                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
     my $include = $r->dir_config('lonIncludes');                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
     my $expire  = $r->dir_config('lonExpire');                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     my $version = $r->dir_config('lonVersion');                   .$end_page
     my $host_name = &Apache::lonnet::hostname($lonhost);                   );
           return OK;
 # --------------------------------------------- Default values for login fields      }
   
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');  # ---------------------------------------------------- No valid token, continue
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);  
   # ---------------------------- Not possible to really login to domain "public"
 # ---------------------------------------------------------- Determine own load      if ($env{'form.domain'} eq 'public') {
     my $loadavg;   $env{'form.domain'}='';
     {   $env{'form.username'}='';
  my $loadfile=Apache::File->new('/proc/loadavg');      }
  $loadavg=<$loadfile>;  
     }  # ------ Is this page requested because /adm/migrateuser detected an IP change?
     $loadavg =~ s/\s.*//g;      my %sessiondata;
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);      if ($env{'form.iptoken'}) {
     my $userloadpercent=&Apache::lonnet::userload();          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
           unless ($sessiondata{'sessionserver'}) {
 # ------------------------------------------------------- Do the load balancing              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
     my $otherserver= &Apache::lonnet::absolute_url($host_name);              delete($env{'form.iptoken'});
     my $firsturl=          }
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});      }
 # ---------------------------------------------------------- Are we overloaded?  # ----------------------------------------------------------- Process Interface
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {      $env{'form.interface'}=~s/\W//g;
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);  
  if ($unloaded) { $otherserver=$unloaded; }      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     }          &Apache::loncommon::decode_user_agent();
   
 # ----------------------------------------------------------- Get announcements      my $iconpath=
     my $announcements=&Apache::lonnet::getannounce();   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
 # -------------------------------------------------------- Set login parameters  
       my $lonhost = $r->dir_config('lonHostID');
     my @hexstr=('0','1','2','3','4','5','6','7',      my $domain = &Apache::lonnet::default_login_domain();
                 '8','9','a','b','c','d','e','f');      my $defdom = $domain;
     my $lkey='';      if ($lonhost ne '') {
     for (0..7) {          unless ($sessiondata{'sessionserver'}) {
         $lkey.=$hexstr[rand(15)];              my $redirect = &check_loginvia($domain,$lonhost);
     }              if ($redirect) {
                   $r->print($redirect);
     my $ukey='';                  return OK;
     for (0..7) {              }
         $ukey.=$hexstr[rand(15)];          }
     }      }
   
     my $lextkey=hex($lkey);      if (($sessiondata{'domain'}) &&
     if ($lextkey>2147483647) { $lextkey-=4294967296; }          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
           $domain=$sessiondata{'domain'};
     my $uextkey=hex($ukey);      } elsif (($env{'form.domain'}) &&
     if ($uextkey>2147483647) { $uextkey-=4294967296; }   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
    $domain=$env{'form.domain'};
 # -------------------------------------------------------- Store away log token      }
     my $tokenextras;  
     if ($env{'form.role'}) {      my $role    = $r->dir_config('lonRole');
         $tokenextras = '&role='.&escape($env{'form.role'});      my $loadlim = $r->dir_config('lonLoadLim');
     }      my $uloadlim= $r->dir_config('lonUserLoadLim');
     if ($env{'form.symb'}) {      my $servadm = $r->dir_config('lonAdmEMail');
         if (!$tokenextras) {      my $tabdir  = $r->dir_config('lonTabDir');
             $tokenextras = '&';      my $include = $r->dir_config('lonIncludes');
         }      my $expire  = $r->dir_config('lonExpire');
         $tokenextras .= '&symb='.&escape($env{'form.symb'});      my $version = $r->dir_config('lonVersion');
     }      my $host_name = &Apache::lonnet::hostname($lonhost);
     my $logtoken=Apache::lonnet::reply(  
        'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,  # --------------------------------------------- Default values for login fields
        $lonhost);     
       my ($authusername,$authdomain);
 # ------------------- If we cannot talk to ourselves, we are in serious trouble      if ($sessiondata{'username'}) {
           $authusername=$sessiondata{'username'};
     if ($logtoken eq 'con_lost') {      } else {
         my $spares='';          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
  my $last;          $authusername=($env{'form.username'}?$env{'form.username'}:'');
         foreach my $hostid (sort      }
     {      if ($sessiondata{'domain'}) {
  &Apache::lonnet::hostname($a) cmp          $authdomain=$sessiondata{'domain'};
     &Apache::lonnet::hostname($b);      } else {
     }          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
     keys(%Apache::lonnet::spareid)) {          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
             next if ($hostid eq $lonhost);      }
     my $hostname = &Apache::lonnet::hostname($hostid);  
     next if ($last eq $hostname);  # ---------------------------------------------------------- Determine own load
             $spares.='<br /><font size="+1"><a href="http://'.      my $loadavg;
                 $hostname.      {
                 '/adm/login?domain='.$authdomain.'">'.   my $loadfile=Apache::File->new('/proc/loadavg');
                 $hostname.'</a>'.   $loadavg=<$loadfile>;
                 ' '.&mt('(preferred)').'</font>'.$/;      }
     $last=$hostname;      $loadavg =~ s/\s.*//g;
         }  
         $spares.= '<br />';      my ($loadpercent,$userloadpercent);
  my %all_hostnames = &Apache::lonnet::all_hostnames();      if ($loadlim) {
         foreach my $hostid (sort          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
     {      }
  &Apache::lonnet::hostname($a) cmp      if ($uloadlim) {
     &Apache::lonnet::hostname($b);          $userloadpercent=&Apache::lonnet::userload();
     }      }
     keys(%all_hostnames)) {  
             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});      my $firsturl=
     my $hostname = &Apache::lonnet::hostname($hostid);      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
             next if ($last eq $hostname);  
             $spares.='<br /><a href="http://'.  # ----------------------------------------------------------- Get announcements
                 $hostname.      my $announcements=&Apache::lonnet::getannounce();
                 '/adm/login?domain='.$authdomain.'">'.  # -------------------------------------------------------- Set login parameters
                 $hostname.'</a>';  
     $last=$hostname;      my @hexstr=('0','1','2','3','4','5','6','7',
         }                  '8','9','a','b','c','d','e','f');
  $r->print(      my $lkey='';
            '<html>'      for (0..7) {
           .'<head><title>'          $lkey.=$hexstr[rand(15)];
           .&mt('The LearningOnline Network with CAPA')      }
           .'</title></head>'  
           .'<body bgcolor="#FFFFFF">'      my $ukey='';
           .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'      for (0..7) {
           .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'          $ukey.=$hexstr[rand(15)];
           .'<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>'  
           .$spares      my $lextkey=hex($lkey);
           .'</body>'      if ($lextkey>2147483647) { $lextkey-=4294967296; }
           .'</html>'  
         );      my $uextkey=hex($ukey);
         return OK;      if ($uextkey>2147483647) { $uextkey-=4294967296; }
     }  
   # -------------------------------------------------------- Store away log token
 # ----------------------------------------------- Apparently we are in business      my $tokenextras;
     $servadm=~s/\,/\<br \/\>/g;      if ($env{'form.role'}) {
           $tokenextras = '&role='.&escape($env{'form.role'});
 # ----------------------------------------------------------- Front page design      }
     my $pgbg=      if ($env{'form.symb'}) {
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');          if (!$tokenextras) {
     my $font=              $tokenextras = '&';
       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');          }
     my $link=          $tokenextras .= '&symb='.&escape($env{'form.symb'});
       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');      }
     my $vlink=      if ($env{'form.iptoken'}) {
       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');          if (!$tokenextras) {
     my $alink=&Apache::loncommon::designparm('login.alink',$domain);              $tokenextras = '&&';
     my $mainbg=          }
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
     my $sidebg=      }
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');      my $logtoken=Apache::lonnet::reply(
     my $textcol =          'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');         $lonhost);
     my $bgcol =  
       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
     my $logo=&Apache::loncommon::designparm('login.logo',$domain);  #    we are in serious trouble
     my $img=&Apache::loncommon::designparm('login.img',$domain);  
     my $domainlogo=&Apache::loncommon::domainlogo($domain);      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
     my $login=&Apache::loncommon::designparm('login.login',$domain);          if ($logtoken eq 'no_such_host') {
     if ($login eq '') {              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
         $login = $iconpath.'/'.&mt('userauthentication.gif');          }
     }          my $spares='';
     my $showbanner = 1;   my $last;
     my $showmainlogo = 1;          foreach my $hostid (sort
     if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {      {
         $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);   &Apache::lonnet::hostname($a) cmp
     }      &Apache::lonnet::hostname($b);
     if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {      }
         $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);      keys(%Apache::lonnet::spareid)) {
     }              next if ($hostid eq $lonhost);
     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);      my $hostname = &Apache::lonnet::hostname($hostid);
     my $showcoursecat =      next if (($last eq $hostname) || ($hostname eq ''));
         &Apache::loncommon::designparm('login.coursecatalog',$domain);              $spares.='<br /><font size="+1"><a href="http://'.
     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);                  $hostname.
     my $shownewuserlink =                   '/adm/login?domain='.$authdomain.'">'.
         &Apache::loncommon::designparm('login.newuser',$domain);                  $hostname.'</a>'.
     my $now=time;                  ' '.&mt('(preferred)').'</font>'.$/;
     my $js = (<<ENDSCRIPT);      $last=$hostname;
           }
  <script type="text/javascript">          if ($spares) {
  // <![CDATA[              $spares.= '<br />';
     function send()          }
     {          my %all_hostnames = &Apache::lonnet::all_hostnames();
         this.document.server.elements.uname.value          foreach my $hostid (sort
        =this.document.client.elements.uname.value;      {
    &Apache::lonnet::hostname($a) cmp
         this.document.server.elements.udom.value      &Apache::lonnet::hostname($b);
        =this.document.client.elements.udom.value;      }
       keys(%all_hostnames)) {
         this.document.server.elements.imagesuppress.value              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
        =this.document.client.elements.imagesuppress.checked;              my $hostname = &Apache::lonnet::hostname($hostid);
               next if (($last eq $hostname) || ($hostname eq ''));
         this.document.server.elements.embedsuppress.value              $spares.='<br /><a href="http://'.
        =this.document.client.elements.embedsuppress.checked;               $hostname.
                '/adm/login?domain='.$authdomain.'">'.
         this.document.server.elements.appletsuppress.value               $hostname.'</a>';
        =this.document.client.elements.appletsuppress.checked;              $last=$hostname;
            }
         this.document.server.elements.fontenhance.value           $r->print(
        =this.document.client.elements.fontenhance.checked;     '<html>'
     .'<head><title>'
         this.document.server.elements.blackwhite.value    .&mt('The LearningOnline Network with CAPA')
        =this.document.client.elements.blackwhite.checked;    .'</title></head>'
     .'<body bgcolor="#FFFFFF">'
         this.document.server.elements.remember.value    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
        =this.document.client.elements.remember.checked;    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
     .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
         uextkey=this.document.client.elements.uextkey.value;          if ($spares) {
         lextkey=this.document.client.elements.lextkey.value;              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
         initkeys();                       .'</p>'
                        .$spares);
         this.document.server.elements.upass0.value          }
             =crypted(this.document.client.elements.upass$now.value.substr(0,15));          $r->print('</body>'
         this.document.server.elements.upass1.value                   .'</html>'
             =crypted(this.document.client.elements.upass$now.value.substr(15,15));          );
         this.document.server.elements.upass2.value          return OK;
             =crypted(this.document.client.elements.upass$now.value.substr(30,15));      }
   
         this.document.client.elements.uname.value='';  # ----------------------------------------------- Apparently we are in business
         this.document.client.elements.upass$now.value='';      $servadm=~s/\,/\<br \/\>/g;
   
         this.document.server.submit();  # ----------------------------------------------------------- Front page design
         return false;      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
     }      my $font=&Apache::loncommon::designparm('login.font',$domain);
  // ]]>      my $link=&Apache::loncommon::designparm('login.link',$domain);
  </script>      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
       my $alink=&Apache::loncommon::designparm('login.alink',$domain);
 ENDSCRIPT      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
       my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
 # --------------------------------------------------- Print login screen header      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
       my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
     my %add_entries = (topmargin    => "0",      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
                        leftmargin   => "0",      my $img=&Apache::loncommon::designparm('login.img',$domain);
                        marginheight => "0",      my $domainlogo=&Apache::loncommon::domainlogo($domain);
                        marginwidth  => "0",      my $showbanner = 1;
                        bgcolor      => "$pgbg",      my $showmainlogo = 1;
                        text         => "$font",      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
                        link         => "$link",          $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
                        vlink        => "$vlink",      }
                        alink        => "$alink",);      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
           $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,      }
                                        { 'redirect'       => [$expire,'/adm/roles'],       my $showadminmail;
                                          'add_entries' => \%add_entries,      my @possdoms = &Apache::lonnet::current_machine_domains();
                                          'only_body'   => 1,}));      if (grep(/^\Q$domain\E$/,@possdoms)) {
           $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
 # ----------------------------------------------------------------------- Texts      }
       my $showcoursecat =
 my %lt=&Apache::lonlocal::texthash(          &Apache::loncommon::designparm('login.coursecatalog',$domain);
   'un'  => 'Username',      my $shownewuserlink =
   'pw'  => 'Password',          &Apache::loncommon::designparm('login.newuser',$domain);
   'dom' => 'Domain',      my $showhelpdesk =
   'load' => 'Server Load',          &Apache::loncommon::designparm('login.helpdesk',$domain);
                   'userload' => 'User Load',      my $now=time;
                   'about'  => 'About LON-CAPA',      my $js = (<<ENDSCRIPT);
                   'access' => 'Accessibility Options',  
                   'catalog' => 'Course Catalog',  <script type="text/javascript" language="JavaScript">
   'log' => 'Log in',  // <![CDATA[
   'help' => 'Log-in Help',  function send()
   'serv' => 'Server',  {
                   'servadm' => 'Server Administration',  this.document.server.elements.uname.value
                   'helpdesk' => 'Contact Helpdesk',  =this.document.client.elements.uname.value;
                   'forgotpw' => 'Forgot password?',  
                   'newuser'  => 'New User?',  this.document.server.elements.udom.value
                   'options_headline' => 'Select Accessibility Options',  =this.document.client.elements.udom.value;
                   'sprs_img' => 'Suppress rendering of images',  
                   'sprs_applet' => 'Suppress Java applets',  uextkey=this.document.client.elements.uextkey.value;
                   'sprs_embed' => 'Suppress rendering of embedded multimedia',  lextkey=this.document.client.elements.lextkey.value;
                   'sprs_font' => 'Increase font size',  initkeys();
                   'sprs_blackwhite' => 'Switch to black and white mode',  
                   'remember' => 'Remember these settings for next login');  if(this.document.server.action.substr(0,5) === 'http:'){
 # -------------------------------------------------- Change password field name      this.document.server.elements.upass0.value
     my $forgotpw = &forgotpwdisplay(%lt);          =getCrypted(this.document.client.elements.upass$now.value);
     my $loginhelp = &loginhelpdisplay(%lt);  } else {
       this.document.server.elements.upass0.value
 # ---------------------------------------------------- Serve out DES JavaScript          =this.document.client.elements.upass$now.value;
     {  }
         my $jsh=Apache::File->new($include."/londes.js");  
         $r->print(<$jsh>);  this.document.client.elements.uname.value='';
     }  this.document.client.elements.upass$now.value='';
 # ---------------------------------------------------------- Serve rest of page  
   this.document.server.submit();
     if ($fullgraph) {  return false;
  $r->print(  }
   '<table width="100%" cellpadding="0" cellspacing="0" border="0">');  
     }  function enableInput() {
       this.document.client.elements.upass$now.removeAttribute("readOnly");
     $r->print(<<ENDSERVERFORM);      this.document.client.elements.uname.removeAttribute("readOnly");
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">      this.document.client.elements.udom.removeAttribute("readOnly");
    <input type="hidden" name="logtoken" value="$logtoken" />      return;
    <input type="hidden" name="serverid" value="$lonhost" />  }
    <input type="hidden" name="interface" value="$env{'form.interface'}" />  
    <input type="hidden" name="uname" value="" />  // ]]>
    <input type="hidden" name="upass0" value="" />  </script>
    <input type="hidden" name="upass1" value="" />  
    <input type="hidden" name="upass2" value="" />  ENDSCRIPT
    <input type="hidden" name="udom" value="" />  
    <input type="hidden" name="imagesuppress"  value="" />  # --------------------------------------------------- Print login screen header
    <input type="hidden" name="appletsuppress"  value="" />  
    <input type="hidden" name="embedsuppress"  value="" />      my %add_entries = (
    <input type="hidden" name="fontenhance"  value="" />         bgcolor      => "$mainbg",
    <input type="hidden" name="blackwhite"  value="" />         text         => "$font",
    <input type="hidden" name="remember"  value="" />         link         => "$link",
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />         vlink        => "$vlink",
    <input type="hidden" name="localres" value="$env{'form.localres'}" />         alink        => "$alink",
   </form>                 onload       => 'javascript:enableInput();',);
 ENDSERVERFORM  
     my $coursecatalog;      my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
     if (($showcoursecat eq '') || ($showcoursecat)) {      @hosts = &Apache::lonnet::current_machine_ids();
         $coursecatalog = &coursecatalog_link($lt{'catalog'});      $lonhost_in_use = $lonhost;
     }      if (@hosts > 1) {
     my $newuserlink;          foreach my $hostid (@hosts) {
     if ($shownewuserlink) {              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
         $newuserlink = &newuser_link($lt{'newuser'});                  $lonhost_in_use = $hostid;
     }                  last;
     if ($fullgraph) {              }
         $r->print(<<HEADER);          }
   <!-- The LON-CAPA Header -->      }
   <tr>      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
       $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
    <!-- Row 1 Columns 2-4 -->      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg">      if ($headextra) {
 HEADER          my $omitextra;
         if ($showbanner) {          if ($headextra_exempt ne '') {
             $r->print(<<ENDBANNER);              my @exempt = split(',',$headextra_exempt);
 <img src="$img" border="0" alt="The Learning Online Network with CAPA" />              my $ip = $ENV{'REMOTE_ADDR'};
 ENDBANNER              if (grep(/^\Q$ip\E$/,@exempt)) {
         }                  $omitextra = 1;
         $r->print(<<ENDSTART);              }
    </td>          }
   </tr>          unless ($omitextra) {
               my $confname = $defdom.'-domainconfig';
   <!-- The gray bar that starts the two table frames -->              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
   <tr>                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
                   unless ($extra eq '-1') {
    <!-- Row 2 Column 1 -->                      $js .= "\n".$extra."\n";
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>                  }
               }
    <!-- Row 2 Column 2 -->          }
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>      }
   
    <!-- Row 2 Column 3 -->      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>         { 'redirect'       => [$expire,'/adm/roles'],
    'add_entries' => \%add_entries,
    <!-- Row 2 Column 4 -->   'only_body'   => 1,}));
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>  
   </tr>  # ----------------------------------------------------------------------- Texts
   <tr>  
          my %lt=&Apache::lonlocal::texthash(
    <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->            'un'       => 'Username',
    <!-- Row 3 Column 1 -->            'pw'       => 'Password',
    <td valign="top" height="60" align="left" bgcolor="$sidebg">            'dom'      => 'Domain',
     <table cellpadding="0" cellspacing="2" border="0">            'perc'     => 'percent',
      <tr>            'load'     => 'Server Load',
       <td>&nbsp;</td>            'userload' => 'User Load',
       <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>            'catalog'  => 'Course/Community Catalog',
      </tr>            'log'      => 'Log in',
      <tr>            'help'     => 'Log-in Help',
       <td>&nbsp;</td>            'serv'     => 'Server',
       <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>            'servadm'  => 'Server Administration',
      </tr>$coursecatalog            'helpdesk' => 'Contact Helpdesk',
      <tr>            'forgotpw' => 'Forgot password?',
       <td colspan="2">&nbsp;</td>            'newuser'  => 'New User?',
      </tr>         );
     </table>  # -------------------------------------------------- Change password field name
    </td>  
    <!-- The shaded space between the two main columns -->      my $forgotpw = &forgotpwdisplay(%lt);
    <!-- Row 3 Column 2 -->      $forgotpw .= '<br />' if $forgotpw;
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
       if ($loginhelp) {
    <!-- The right main column holding the large LON-CAPA logo-->          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
    <!-- Rows 3-4 Column 3 -->      }
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">  
 ENDSTART  # ---------------------------------------------------- Serve out DES JavaScript
         if ($showmainlogo) {      {
             $r->print(<<ENDLOGO);      my $jsh=Apache::File->new($include."/londes.js");
     <center>      $r->print(<$jsh>);
      <img src="$logo" alt="" />      }
     </center>  # ---------------------------------------------------------- Serve rest of page
 ENDLOGO  
         }      $r->print(
         $r->print(<<ENDTOP);      '<div class="LC_Box"'
    </td>     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
   );
    <!-- Row 3 Column 4 -->  
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>      $r->print(<<ENDSERVERFORM);
   </tr>  <form name="server" action="/adm/authenticate" method="post" target="_top">
   <tr>     <input type="hidden" name="logtoken" value="$logtoken" />
      <input type="hidden" name="serverid" value="$lonhost" />
    <!-- The entry form -->     <input type="hidden" name="uname" value="" />
    <!-- Row 4 Column 1 -->     <input type="hidden" name="upass0" value="" />
    <td align="center" valign="middle" bgcolor="$sidebg">     <input type="hidden" name="udom" value="" />
 ENDTOP     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
     } else {     <input type="hidden" name="localres" value="$env{'form.localres'}" />
         $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'    </form>
                  .'<h2>'.&mt('Text-based Interface Login').'</h2>'  ENDSERVERFORM
                  .$announcements);      my $coursecatalog;
     }      if (($showcoursecat eq '') || ($showcoursecat)) {
     $r->print('<form name="client" action="" onsubmit="return(send())">');          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
     unless ($fullgraph) {      }
         $r->print(<<ENDACCESSOPTIONS);      my $newuserlink;
 <h3>$lt{'options_headline'}</h3>      if ($shownewuserlink) {
 <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
 <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />      }
 <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />      my $logintitle =
 <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />          '<h2 class="LC_hcell"'
 <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />         .' style="background:'.$loginbox_header_bgcol.';'
 <br />         .' color:'.$loginbox_header_textcol.'">'
 <input type="checkbox" name="remember" /> $lt{'remember'}<hr />         .$lt{'log'}
 ENDACCESSOPTIONS         .'</h2>';
     } else {  
         $r->print(<<ENDNOOPT);      my $noscript_warning='<noscript><span class="LC_warning"><b>'
 <input type="hidden" name="imagesuppress"  value="" />                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
 <input type="hidden" name="embedsuppress"  value="" />                          .'</b></span></noscript>';
 <input type="hidden" name="appletsuppress"  value="" />      my $helpdeskscript;
 <input type="hidden" name="fontenhance"  value="" />      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
 <input type="hidden" name="blackwhite"  value="" />                                         $authdomain,\$helpdeskscript,
 <input type="hidden" name="remember"  value="" />                                         $showhelpdesk,\@possdoms);
 ENDNOOPT  
     }      my $mobileargs;
     my $logintitle;      if ($clientmobile) {
     if ($loginheader eq 'text') {          $mobileargs = 'autocapitalize="off" autocorrect="off"';
         $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';      }
     } else {      my $loginform=(<<LFORM);
         $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.  <form name="client" action="" onsubmit="return(send())">
                       &mt('User Authentication').'" /></td>';    <input type="hidden" name="lextkey" value="$lextkey" />
     }    <input type="hidden" name="uextkey" value="$uextkey" />
     my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'    <b><label for="uname">$lt{'un'}</label>:</b><br />
                         .'<noscript><div class="LC_warning"><font size="-1">'    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
                         .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
                         .'</font></div></noscript></td>';    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
     $r->print(<<ENDLOGIN);    <b><label for="udom">$lt{'dom'}</label>:</b><br />
      <input type="hidden" name="lextkey" value="$lextkey" />    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
      <input type="hidden" name="uextkey" value="$uextkey" />    <input type="submit" value="$lt{'log'}" />
   </form>
      <!-- Start the sub-table for text and input alignment -->  LFORM
      <table border="0" cellspacing="0" cellpadding="0">  
       <tr>$logintitle</tr>      if ($showbanner) {
       <tr>$noscript_warning</tr>          $r->print(<<HEADER);
       <tr>  <!-- The LON-CAPA Header -->
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>  <div style="background:$pgbg;margin:0;width:100%;">
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>    <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
       </tr>  </div>
       <tr>  HEADER
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="upass$now">$lt{'pw'}</label>:</b></font></td>      }
        <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>      $r->print(<<ENDTOP);
       </tr>  <div style="float:left;margin-top:0;">
       <tr>  <div class="LC_Box" style="background:$loginbox_bg;">
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="udom">$lt{'dom'}</label>:</b></font></td>    $logintitle
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>    $loginform
       </tr>    $noscript_warning
       <tr>  </div>
        <td bgcolor="$mainbg">&nbsp;</td>   
        <td bgcolor="$mainbg" valign="bottom" align="center">  <div class="LC_Box" style="padding-top: 10px;">
         <br />    $loginhelp
         <input type="submit" value="$lt{'log'}" />    $forgotpw
        </td>    $contactblock
       </tr>    $newuserlink
       <tr>    $coursecatalog
        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">  </div>
         $loginhelp  </div>
         $forgotpw  
         $newuserlink  <div>
         <br />  ENDTOP
        </td>      if ($showmainlogo) {
       </tr>          $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
      </table>      }
      <!-- End sub-table -->  $r->print(<<ENDTOP);
     </form>  $announcements
 ENDLOGIN  </div>
     if ($fullgraph) {  <hr style="clear:both;" />
         my $helpdeskscript;  ENDTOP
         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
                                   $version,$authdomain,\$helpdeskscript);      $domainrow = <<"END";
  $r->print(<<ENDDOCUMENT);        <tr>
    </td>         <td  align="left" valign="top">
           <small><b>$lt{'dom'}:&nbsp;</b></small>
    <!-- Row 4 Column 2 -->         </td>
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>         <td  align="left" valign="top">
           <small><tt>&nbsp;$domain</tt></small>
    <!-- Row 4 Column 3 -->         </td>
 <td bgcolor="$mainbg">$announcements</td>        </tr>
   END
    <!-- Row 4 Column 4 -->      $serverrow = <<"END";
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>        <tr>
   </tr>         <td  align="left" valign="top">
   <tr>          <small><b>$lt{'serv'}:&nbsp;</b></small>
          </td>
    <!-- Row 5 Column 1 -->         <td align="left" valign="top">
    <td bgcolor="$sidebg" valign="middle" align="left">          <small><tt>&nbsp;$lonhost ($role)</tt></small>
      <br />         </td>
      <table border="0" cellspacing="0" cellpadding="0">        </tr>
       <tr>  END
        <td bgcolor="$sidebg" align="left" valign="top">      if ($loadlim) {
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>          $loadrow = <<"END";
        </td>        <tr>
        <td bgcolor="$sidebg" align="left" valign="middle">         <td align="left" valign="top">
         <small><tt>&nbsp;$domain</tt></small>          <small><b>$lt{'load'}:&nbsp;</b></small>
        </td>         </td>
       </tr>         <td align="left" valign="top">
       <tr>          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
        <td bgcolor="$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 ($uloadlim) {
        </td>          $userloadrow = <<"END";
       </tr>        <tr>
       <tr>         <td align="left" valign="top">
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">          <small><b>$lt{'userload'}:&nbsp;</b></small>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small></span>         </td>
        </td>         <td align="left" valign="top">
        <td bgcolor="$sidebg" align="left" valign="middle">          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
         <small><tt>&nbsp;$loadpercent%</tt></small>         </td>
        </td>        </tr>
       </tr>  END
       <tr>      }
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small></span>          $versionrow = <<"END";
        </td>        <tr>
        <td bgcolor="$sidebg" align="left" valign="middle">         <td colspan="2" align="left">
         <small><tt>&nbsp;$userloadpercent%</tt></small>          <small>$version</small>
        </td>         </td>
       </tr>        </tr>
      </table>  END
      <br />      }
     $contactblock  
    </td>      $r->print(<<ENDDOCUMENT);
       <div style="float: left;">
    <!-- Row 5 Column 2 -->       <table border="0" cellspacing="0" cellpadding="0">
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  $domainrow
   $serverrow
    <!-- Row 5 Column 3 -->  $loadrow    
    <td width="100%" valign="bottom" bgcolor="$mainbg">  $userloadrow
 $domainlogo  $versionrow
 </td>       </table>
       </div>
    <!-- Row 5 Column 4 -->      <div style="float: right;">
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>      $domainlogo
   </tr>      </div>
   <tr>      <br style="clear:both;" />
    </div>
    <!-- Row 6 Column 1 -->  
    <td bgcolor="$sidebg">&nbsp;</td>  <script type="text/javascript">
   // <![CDATA[
    <!-- Row 6 Column 2 -->  // the if prevents the script error if the browser can not handle this
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>  if ( document.client.uname ) { document.client.uname.focus(); }
   // ]]>
    <!-- Row 6 Column 3 -->  </script>
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>  $helpdeskscript
   
    <!-- Row 6 Column 4 -->  ENDDOCUMENT
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>      my %endargs = ( 'noredirectlink' => 1, );
   </tr>      $r->print(&Apache::loncommon::end_page(\%endargs));
  </table>      return OK;
   }
 <script type="text/javascript">  
 // <![CDATA[  sub check_loginvia {
 // the if prevents the script error if the browser can not handle this      my ($domain,$lonhost) = @_;
 if ( document.client.uname ) { document.client.uname.focus(); }      if ($domain eq '' || $lonhost eq '') {
 // ]]>          return;
 </script>      }
 $helpdeskscript      my %domconfhash = &Apache::loncommon::get_domainconf($domain);
       my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
 ENDDOCUMENT      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
 }      my $output;
     my %endargs = ( 'noredirectlink' => 1, );      if ($loginvia ne '') {
     $r->print(&Apache::loncommon::end_page(\%endargs));          my $noredirect;
     return OK;          my $ip = $ENV{'REMOTE_ADDR'};
 }          if ($ip eq '127.0.0.1') {
               $noredirect = 1;
 sub contactdisplay {          } else {
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;              if ($loginvia_exempt ne '') {
     my $contactblock;                  my @exempt = split(',',$loginvia_exempt);
     my $showhelpdesk = 0;                  if (grep(/^\Q$ip\E$/,@exempt)) {
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};                      $noredirect = 1;
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {                  }
         $showhelpdesk = 1;              }
     }          }
     if ($servadm && $showadminmail) {          unless ($noredirect) {
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.              my ($newhost,$path);
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';              if ($loginvia =~ /:/) {
     }                  ($newhost,$path) = split(':',$loginvia);
     if ($showhelpdesk) {              } else {
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';                  $newhost = $loginvia;
         my $thisurl = &escape('/adm/login');              }
         $$helpdeskscript = <<"ENDSCRIPT";              if ($newhost ne $lonhost) {
 <script type="text/javascript">                  if (&Apache::lonnet::hostname($newhost) ne '') {
 // <![CDATA[                      $output = &redirect_page($newhost,$path);
 function helpdesk() {                  }
     var codedom = document.client.udom.value;              }
     if (codedom == '') {          }
         codedom = "$authdomain";      }
     }      return $output;
     var querystr = "origurl=$thisurl&codedom="+codedom;  }
     document.location.href = "/adm/helpdesk?"+querystr;  
     return;  sub redirect_page {
 }      my ($desthost,$path) = @_;
 // ]]>      my $protocol = $Apache::lonnet::protocol{$desthost};
 </script>      $protocol = 'http' if ($protocol ne 'https');
 ENDSCRIPT      unless ($path =~ m{^/}) {
     }          $path = '/'.$path;
     $contactblock .= <<"ENDBLOCK";      }
      &nbsp;&nbsp;&nbsp;$version      my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
 ENDBLOCK      if ($env{'form.firsturl'} ne '') {
     return $contactblock;          $url .='?firsturl='.$env{'form.firsturl'};
 }      }
       my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
 sub forgotpwdisplay {                                                      {'redirect' => [0,$url],});
     my (%lt) = @_;      my $end_page   = &Apache::loncommon::end_page();
     my $prompt_for_resetpw = 1;       return $start_page.$end_page;
     if ($prompt_for_resetpw) {  }
         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br />';  
     }  sub contactdisplay {
     return;      my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
 }          $possdoms) = @_;
       my $contactblock;
 sub loginhelpdisplay {      my $origmail;
     my (%lt) = @_;      if (ref($possdoms) eq 'ARRAY') {
     my $login_help = 1;          if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
     if ($login_help) {              $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';          }
     }      }
     return;      my $requestmail =
 }          &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                    $authdomain,$origmail);
 sub coursecatalog_link {      unless ($showhelpdesk eq '0') {
     my ($linkname) = @_;          if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
     return <<"END";              $showhelpdesk = 1;
      <tr>          } else {
       <td>&nbsp;</td>              $showhelpdesk = 0;
       <td><a href="/adm/coursecatalog"><b>$linkname</b></a></td>          }
      </tr>      }
 END      if ($servadm && $showadminmail) {
 }          $contactblock .= $$lt{'servadm'}.':<br />'.
                            '<tt>'.$servadm.'</tt><br />';
 sub newuser_link {      }
     my ($linkname) = @_;      if ($showhelpdesk) {
     return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';          $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
 }          my $thisurl = &escape('/adm/login');
           $$helpdeskscript = <<"ENDSCRIPT";
 1;  <script type="text/javascript">
 __END__  // <![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.1.106.4.4  
changed lines
  Added in v.1.171

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