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Diff for /loncom/auth/lonlogin.pm between versions 1.106.4.2 and 1.170

version 1.106.4.2, 2009/08/12 19:44:18 version 1.170, 2017/02/25 19:56:09
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',        $ENV{'REDIRECT_QUERY_STRING'}),
   'token']);   ['interface','username','domain','firsturl','localpath','localres',
     if (!defined($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,$expire);
     $r->send_http_header;      unless ($r->header_only) {
     return OK if $r->header_only;          $handle = &Apache::lonnet::check_for_valid_session($r);
           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;                  $expire = 1;
     }              }
           }
       }
 # -------------------------------- Prevent users from attempting to login twice  
     my $handle = &Apache::lonnet::check_for_valid_session($r);      &Apache::loncommon::no_cache($r);
     if ($handle=~/^publicuser\_/) {      &Apache::lonlocal::get_language_handle($r);
 # For "public user" - remove it, we apparently really want to login      &Apache::loncommon::content_type($r,'text/html');
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      if ($expire) {
     } elsif ($handle ne '') {          my $c = new CGI::Cookie(-name    => 'lonPubID',
 # Indeed, a valid token is found                                  -value   => '',
  my $start_page =                                   -expires => '-10y',);
     &Apache::loncommon::start_page('Already logged in');          $r->header_out('Set-cookie' => $c);
  my $end_page =       }
     &Apache::loncommon::end_page();      $r->send_http_header;
  $r->print(      return OK if $r->header_only;
                   $start_page  
                  .'<h1>'.&mt('You are already logged in!').'</h1>'  
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',  # Are we re-routing?
                   '<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>').'</p>'      my $londocroot = $r->dir_config('lonDocRoot');
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'      if (-e "$londocroot/lon-status/reroute.txt") {
                  .$end_page   &Apache::lonauth::reroute($r);
                  );   return OK;
         return OK;      }
     }  
       $env{'form.firsturl'} =~ s/(`)/'/g;
 # ---------------------------------------------------- No valid token, continue  
   # -------------------------------- Prevent users from attempting to login twice
  # ---------------------------- Not possible to really login to domain "public"      if ($handle ne '') {
     if ($env{'form.domain'} eq 'public') {          &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
  $env{'form.domain'}='';   my $start_page =
  $env{'form.username'}='';      &Apache::loncommon::start_page('Already logged in');
     }   my $end_page =
 # ----------------------------------------------------------- Process Interface      &Apache::loncommon::end_page();
     $env{'form.interface'}=~s/\W//g;          my $dest = '/adm/roles';
           if ($env{'form.firsturl'} ne '') {
     my $textbrowsers=$r->dir_config('lonTextBrowsers');              $dest = $env{'form.firsturl'};
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};          }
        $r->print(
     foreach (split(/\:/,$textbrowsers)) {                    $start_page
  if ($httpbrowser=~/$_/i) {                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
     $env{'form.interface'}='textual';                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
         }                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     }                   .$end_page
                    );
     my $fullgraph=($env{'form.interface'} ne 'textual');          return OK;
       }
     my $iconpath=   
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));  # ---------------------------------------------------- No valid token, continue
   
     my $domain = &Apache::lonnet::default_login_domain();  # ---------------------------- Not possible to really login to domain "public"
     if (($env{'form.domain'}) &&       if ($env{'form.domain'} eq 'public') {
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {   $env{'form.domain'}='';
  $domain=$env{'form.domain'};   $env{'form.username'}='';
     }      }
     my $role    = $r->dir_config('lonRole');  
     my $loadlim = $r->dir_config('lonLoadLim');  # ------ Is this page requested because /adm/migrateuser detected an IP change?
     my $servadm = $r->dir_config('lonAdmEMail');      my %sessiondata;
     my $lonhost = $r->dir_config('lonHostID');      if ($env{'form.iptoken'}) {
     my $tabdir  = $r->dir_config('lonTabDir');          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
     my $include = $r->dir_config('lonIncludes');          unless ($sessiondata{'sessionserver'}) {
     my $expire  = $r->dir_config('lonExpire');              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
     my $version = $r->dir_config('lonVersion');              delete($env{'form.iptoken'});
     my $host_name = &Apache::lonnet::hostname($lonhost);          }
       }
 # --------------------------------------------- Default values for login fields  # ----------------------------------------------------------- Process Interface
       $env{'form.interface'}=~s/\W//g;
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');  
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
           &Apache::loncommon::decode_user_agent();
 # ---------------------------------------------------------- Determine own load  
     my $loadavg;      my $iconpath=
     {   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
  my $loadfile=Apache::File->new('/proc/loadavg');  
  $loadavg=<$loadfile>;      my $lonhost = $r->dir_config('lonHostID');
     }      my $domain = &Apache::lonnet::default_login_domain();
     $loadavg =~ s/\s.*//g;      my $defdom = $domain;
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);      if ($lonhost ne '') {
     my $userloadpercent=&Apache::lonnet::userload();          unless ($sessiondata{'sessionserver'}) {
               my $redirect = &check_loginvia($domain,$lonhost);
 # ------------------------------------------------------- Do the load balancing              if ($redirect) {
     my $otherserver= &Apache::lonnet::absolute_url($host_name);                  $r->print($redirect);
     my $firsturl=                  return OK;
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});              }
 # ---------------------------------------------------------- Are we overloaded?          }
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {      }
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);  
  if ($unloaded) { $otherserver=$unloaded; }      if (($sessiondata{'domain'}) &&
     }          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
           $domain=$sessiondata{'domain'};
 # ----------------------------------------------------------- Get announcements      } elsif (($env{'form.domain'}) &&
     my $announcements=&Apache::lonnet::getannounce();   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
 # -------------------------------------------------------- Set login parameters   $domain=$env{'form.domain'};
       }
     my @hexstr=('0','1','2','3','4','5','6','7',  
                 '8','9','a','b','c','d','e','f');      my $role    = $r->dir_config('lonRole');
     my $lkey='';      my $loadlim = $r->dir_config('lonLoadLim');
     for (0..7) {      my $uloadlim= $r->dir_config('lonUserLoadLim');
         $lkey.=$hexstr[rand(15)];      my $servadm = $r->dir_config('lonAdmEMail');
     }      my $tabdir  = $r->dir_config('lonTabDir');
       my $include = $r->dir_config('lonIncludes');
     my $ukey='';      my $expire  = $r->dir_config('lonExpire');
     for (0..7) {      my $version = $r->dir_config('lonVersion');
         $ukey.=$hexstr[rand(15)];      my $host_name = &Apache::lonnet::hostname($lonhost);
     }  
   # --------------------------------------------- Default values for login fields
     my $lextkey=hex($lkey);     
     if ($lextkey>2147483647) { $lextkey-=4294967296; }      my ($authusername,$authdomain);
       if ($sessiondata{'username'}) {
     my $uextkey=hex($ukey);          $authusername=$sessiondata{'username'};
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      } else {
           $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
 # -------------------------------------------------------- Store away log token          $authusername=($env{'form.username'}?$env{'form.username'}:'');
     my $logtoken=Apache::lonnet::reply(      }
        'tmpput:'.$ukey.$lkey.'&'.$firsturl,      if ($sessiondata{'domain'}) {
        $lonhost);          $authdomain=$sessiondata{'domain'};
       } else {
 # ------------------- If we cannot talk to ourselves, we are in serious trouble          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
           $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
     if ($logtoken eq 'con_lost') {      }
         my $spares='';  
  my $last;  # ---------------------------------------------------------- Determine own load
         foreach my $hostid (sort      my $loadavg;
     {      {
  &Apache::lonnet::hostname($a) cmp   my $loadfile=Apache::File->new('/proc/loadavg');
     &Apache::lonnet::hostname($b);   $loadavg=<$loadfile>;
     }      }
     keys(%Apache::lonnet::spareid)) {      $loadavg =~ s/\s.*//g;
             next if ($hostid eq $lonhost);  
     my $hostname = &Apache::lonnet::hostname($hostid);      my ($loadpercent,$userloadpercent);
     next if ($last eq $hostname);      if ($loadlim) {
             $spares.='<br /><font size="+1"><a href="http://'.          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
                 $hostname.      }
                 '/adm/login?domain='.$authdomain.'">'.      if ($uloadlim) {
                 $hostname.'</a>'.          $userloadpercent=&Apache::lonnet::userload();
                 ' '.&mt('(preferred)').'</font>'.$/;      }
     $last=$hostname;  
         }      my $firsturl=
         $spares.= '<br />';      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
  my %all_hostnames = &Apache::lonnet::all_hostnames();  
         foreach my $hostid (sort  # ----------------------------------------------------------- Get announcements
     {      my $announcements=&Apache::lonnet::getannounce();
  &Apache::lonnet::hostname($a) cmp  # -------------------------------------------------------- Set login parameters
     &Apache::lonnet::hostname($b);  
     }      my @hexstr=('0','1','2','3','4','5','6','7',
     keys(%all_hostnames)) {                  '8','9','a','b','c','d','e','f');
             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});      my $lkey='';
     my $hostname = &Apache::lonnet::hostname($hostid);      for (0..7) {
             next if ($last eq $hostname);          $lkey.=$hexstr[rand(15)];
             $spares.='<br /><a href="http://'.      }
                 $hostname.  
                 '/adm/login?domain='.$authdomain.'">'.      my $ukey='';
                 $hostname.'</a>';      for (0..7) {
     $last=$hostname;          $ukey.=$hexstr[rand(15)];
         }      }
  $r->print(  
            '<html>'      my $lextkey=hex($lkey);
           .'<head><title>'      if ($lextkey>2147483647) { $lextkey-=4294967296; }
           .&mt('The LearningOnline Network with CAPA')  
           .'</title></head>'      my $uextkey=hex($ukey);
           .'<body bgcolor="#FFFFFF">'      if ($uextkey>2147483647) { $uextkey-=4294967296; }
           .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'  
           .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'  # -------------------------------------------------------- Store away log token
           .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'      my $tokenextras;
           .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'      if ($env{'form.role'}) {
           .$spares          $tokenextras = '&role='.&escape($env{'form.role'});
           .'</body>'      }
           .'</html>'      if ($env{'form.symb'}) {
         );          if (!$tokenextras) {
         return OK;              $tokenextras = '&';
     }          }
           $tokenextras .= '&symb='.&escape($env{'form.symb'});
 # ----------------------------------------------- Apparently we are in business      }
     $servadm=~s/\,/\<br \/\>/g;      if ($env{'form.iptoken'}) {
           if (!$tokenextras) {
 # ----------------------------------------------------------- Front page design              $tokenextras = '&&';
     my $pgbg=          }
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
     my $font=      }
       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');      my $logtoken=Apache::lonnet::reply(
     my $link=         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');         $lonhost);
     my $vlink=  
       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
     my $alink=&Apache::loncommon::designparm('login.alink',$domain);  #    we are in serious trouble
     my $mainbg=  
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
     my $sidebg=          if ($logtoken eq 'no_such_host') {
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
     my $textcol =           }
       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');          my $spares='';
     my $bgcol =   my $last;
       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');          foreach my $hostid (sort
     my $logo=&Apache::loncommon::designparm('login.logo',$domain);      {
     my $img=&Apache::loncommon::designparm('login.img',$domain);   &Apache::lonnet::hostname($a) cmp
     my $domainlogo=&Apache::loncommon::domainlogo($domain);      &Apache::lonnet::hostname($b);
     my $login=&Apache::loncommon::designparm('login.login',$domain);      }
     if ($login eq '') {      keys(%Apache::lonnet::spareid)) {
         $login = $iconpath.'/'.&mt('userauthentication.gif');              next if ($hostid eq $lonhost);
     }      my $hostname = &Apache::lonnet::hostname($hostid);
     my $showbanner = 1;      next if (($last eq $hostname) || ($hostname eq ''));
     my $showmainlogo = 1;              $spares.='<br /><font size="+1"><a href="http://'.
     if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {                  $hostname.
         $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);                  '/adm/login?domain='.$authdomain.'">'.
     }                  $hostname.'</a>'.
     if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {                  ' '.&mt('(preferred)').'</font>'.$/;
         $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);      $last=$hostname;
     }          }
     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);          if ($spares) {
     my $showcoursecat =              $spares.= '<br />';
         &Apache::loncommon::designparm('login.coursecatalog',$domain);          }
     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);          my %all_hostnames = &Apache::lonnet::all_hostnames();
     my $shownewuserlink =           foreach my $hostid (sort
         &Apache::loncommon::designparm('login.newuser',$domain);      {
     my $now=time;   &Apache::lonnet::hostname($a) cmp
     my $js = (<<ENDSCRIPT);      &Apache::lonnet::hostname($b);
       }
  <script type="text/javascript">      keys(%all_hostnames)) {
  // <![CDATA[              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
     function send()              my $hostname = &Apache::lonnet::hostname($hostid);
     {              next if (($last eq $hostname) || ($hostname eq ''));
         this.document.server.elements.uname.value              $spares.='<br /><a href="http://'.
        =this.document.client.elements.uname.value;               $hostname.
                '/adm/login?domain='.$authdomain.'">'.
         this.document.server.elements.udom.value               $hostname.'</a>';
        =this.document.client.elements.udom.value;              $last=$hostname;
            }
         this.document.server.elements.imagesuppress.value           $r->print(
        =this.document.client.elements.imagesuppress.checked;     '<html>'
     .'<head><title>'
         this.document.server.elements.embedsuppress.value    .&mt('The LearningOnline Network with CAPA')
        =this.document.client.elements.embedsuppress.checked;    .'</title></head>'
     .'<body bgcolor="#FFFFFF">'
         this.document.server.elements.appletsuppress.value    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
        =this.document.client.elements.appletsuppress.checked;    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
     .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
         this.document.server.elements.fontenhance.value          if ($spares) {
        =this.document.client.elements.fontenhance.checked;              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
                        .'</p>'
         this.document.server.elements.blackwhite.value                       .$spares);
        =this.document.client.elements.blackwhite.checked;          }
           $r->print('</body>'
         this.document.server.elements.remember.value                   .'</html>'
        =this.document.client.elements.remember.checked;          );
           return OK;
         uextkey=this.document.client.elements.uextkey.value;      }
         lextkey=this.document.client.elements.lextkey.value;  
         initkeys();  # ----------------------------------------------- Apparently we are in business
       $servadm=~s/\,/\<br \/\>/g;
         this.document.server.elements.upass0.value  
             =crypted(this.document.client.elements.upass$now.value.substr(0,15));  # ----------------------------------------------------------- Front page design
         this.document.server.elements.upass1.value      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
             =crypted(this.document.client.elements.upass$now.value.substr(15,15));      my $font=&Apache::loncommon::designparm('login.font',$domain);
         this.document.server.elements.upass2.value      my $link=&Apache::loncommon::designparm('login.link',$domain);
             =crypted(this.document.client.elements.upass$now.value.substr(30,15));      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
       my $alink=&Apache::loncommon::designparm('login.alink',$domain);
         this.document.client.elements.uname.value='';      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
         this.document.client.elements.upass$now.value='';      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
       my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
         this.document.server.submit();      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
         return false;      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
     }      my $img=&Apache::loncommon::designparm('login.img',$domain);
  // ]]>      my $domainlogo=&Apache::loncommon::domainlogo($domain);
  </script>      my $showbanner = 1;
       my $showmainlogo = 1;
 ENDSCRIPT      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
           $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
 # --------------------------------------------------- Print login screen header      }
       if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
     my %add_entries = (topmargin    => "0",          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
                        leftmargin   => "0",      }
                        marginheight => "0",      my $showadminmail;
                        marginwidth  => "0",      my @possdoms = &Apache::lonnet::current_machine_domains();
                        bgcolor      => "$pgbg",      if (grep(/^\Q$domain\E$/,@possdoms)) {
                        text         => "$font",          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
                        link         => "$link",      }
                        vlink        => "$vlink",      my $showcoursecat =
                        alink        => "$alink",);          &Apache::loncommon::designparm('login.coursecatalog',$domain);
       my $shownewuserlink =
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,          &Apache::loncommon::designparm('login.newuser',$domain);
                                        { 'redirect'       => [$expire,'/adm/roles'],       my $showhelpdesk =
                                          'add_entries' => \%add_entries,          &Apache::loncommon::designparm('login.helpdesk',$domain);
                                          'only_body'   => 1,}));      my $now=time;
       my $js = (<<ENDSCRIPT);
 # ----------------------------------------------------------------------- Texts  
   <script type="text/javascript" language="JavaScript">
 my %lt=&Apache::lonlocal::texthash(  // <![CDATA[
   'un'  => 'Username',  function send()
   'pw'  => 'Password',  {
   'dom' => 'Domain',  this.document.server.elements.uname.value
   'load' => 'Server Load',  =this.document.client.elements.uname.value;
                   'userload' => 'User Load',  
                   'about'  => 'About LON-CAPA',  this.document.server.elements.udom.value
                   'access' => 'Accessibility Options',  =this.document.client.elements.udom.value;
                   'catalog' => 'Course Catalog',  
   'log' => 'Log in',  uextkey=this.document.client.elements.uextkey.value;
   'help' => 'Log-in Help',  lextkey=this.document.client.elements.lextkey.value;
   'serv' => 'Server',  initkeys();
                   'servadm' => 'Server Administration',  
                   'helpdesk' => 'Contact Helpdesk',  if(this.document.server.action.substr(0,5) === 'http:'){
                   'forgotpw' => 'Forgot password?',      this.document.server.elements.upass0.value
                   'newuser'  => 'New User?',          =getCrypted(this.document.client.elements.upass$now.value);
                   'options_headline' => 'Select Accessibility Options',  } else {
                   'sprs_img' => 'Suppress rendering of images',      this.document.server.elements.upass0.value
                   'sprs_applet' => 'Suppress Java applets',          =this.document.client.elements.upass$now.value;
                   'sprs_embed' => 'Suppress rendering of embedded multimedia',  }
                   'sprs_font' => 'Increase font size',  
                   'sprs_blackwhite' => 'Switch to black and white mode',  this.document.client.elements.uname.value='';
                   'remember' => 'Remember these settings for next login');  this.document.client.elements.upass$now.value='';
 # -------------------------------------------------- Change password field name  
     my $forgotpw = &forgotpwdisplay(%lt);  this.document.server.submit();
     my $loginhelp = &loginhelpdisplay(%lt);  return false;
   }
 # ---------------------------------------------------- Serve out DES JavaScript  
     {  function enableInput() {
         my $jsh=Apache::File->new($include."/londes.js");      this.document.client.elements.upass$now.removeAttribute("readOnly");
         $r->print(<$jsh>);      this.document.client.elements.uname.removeAttribute("readOnly");
     }      this.document.client.elements.udom.removeAttribute("readOnly");
 # ---------------------------------------------------------- Serve rest of page      return;
   }
     if ($fullgraph) {  
  $r->print(  // ]]>
   '<table width="100%" cellpadding="0" cellspacing="0" border="0">');  </script>
     }  
   ENDSCRIPT
     $r->print(<<ENDSERVERFORM);  
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">  # --------------------------------------------------- Print login screen header
    <input type="hidden" name="logtoken" value="$logtoken" />  
    <input type="hidden" name="serverid" value="$lonhost" />      my %add_entries = (
    <input type="hidden" name="interface" value="$env{'form.interface'}" />         bgcolor      => "$mainbg",
    <input type="hidden" name="uname" value="" />         text         => "$font",
    <input type="hidden" name="upass0" value="" />         link         => "$link",
    <input type="hidden" name="upass1" value="" />         vlink        => "$vlink",
    <input type="hidden" name="upass2" value="" />         alink        => "$alink",
    <input type="hidden" name="udom" value="" />                 onload       => 'javascript:enableInput();',);
    <input type="hidden" name="imagesuppress"  value="" />  
    <input type="hidden" name="appletsuppress"  value="" />      my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
    <input type="hidden" name="embedsuppress"  value="" />      @hosts = &Apache::lonnet::current_machine_ids();
    <input type="hidden" name="fontenhance"  value="" />      $lonhost_in_use = $lonhost;
    <input type="hidden" name="blackwhite"  value="" />      if (@hosts > 1) {
    <input type="hidden" name="remember"  value="" />          foreach my $hostid (@hosts) {
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
    <input type="hidden" name="localres" value="$env{'form.localres'}" />                  $lonhost_in_use = $hostid;
   </form>                  last;
 ENDSERVERFORM              }
     my $coursecatalog;          }
     if (($showcoursecat eq '') || ($showcoursecat)) {      }
         $coursecatalog = &coursecatalog_link($lt{'catalog'});      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
     }      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
     my $newuserlink;      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
     if ($shownewuserlink) {      if ($headextra) {
         $newuserlink = &newuser_link($lt{'newuser'});          my $omitextra;
     }          if ($headextra_exempt ne '') {
     if ($fullgraph) {              my @exempt = split(',',$headextra_exempt);
         $r->print(<<HEADER);              my $ip = $ENV{'REMOTE_ADDR'};
   <!-- The LON-CAPA Header -->              if (grep(/^\Q$ip\E$/,@exempt)) {
   <tr>                  $omitextra = 1;
               }
    <!-- Row 1 Columns 2-4 -->          }
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg">          unless ($omitextra) {
 HEADER              my $confname = $defdom.'-domainconfig';
         if ($showbanner) {              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
             $r->print(<<ENDBANNER);                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
 <img src="$img" border="0" alt="The Learning Online Network with CAPA" />                  unless ($extra eq '-1') {
 ENDBANNER                      $js .= "\n".$extra."\n";
         }                  }
         $r->print(<<ENDSTART);              }
    </td>          }
   </tr>      }
   
   <!-- The gray bar that starts the two table frames -->      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
   <tr>         { 'redirect'       => [$expire,'/adm/roles'],
    'add_entries' => \%add_entries,
    <!-- Row 2 Column 1 -->   'only_body'   => 1,}));
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>  
   # ----------------------------------------------------------------------- Texts
    <!-- Row 2 Column 2 -->  
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>      my %lt=&Apache::lonlocal::texthash(
             'un'       => 'Username',
    <!-- Row 2 Column 3 -->            'pw'       => 'Password',
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>            'dom'      => 'Domain',
             'perc'     => 'percent',
    <!-- Row 2 Column 4 -->            'load'     => 'Server Load',
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>            'userload' => 'User Load',
   </tr>            'catalog'  => 'Course/Community Catalog',
   <tr>            'log'      => 'Log in',
                'help'     => 'Log-in Help',
    <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->            'serv'     => 'Server',
    <!-- Row 3 Column 1 -->            'servadm'  => 'Server Administration',
    <td valign="top" height="60" align="left" bgcolor="$sidebg">            'helpdesk' => 'Contact Helpdesk',
     <table cellpadding="0" cellspacing="2" border="0">            'forgotpw' => 'Forgot password?',
      <tr>            'newuser'  => 'New User?',
       <td>&nbsp;</td>         );
       <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>  # -------------------------------------------------- Change password field name
      </tr>  
      <tr>      my $forgotpw = &forgotpwdisplay(%lt);
       <td>&nbsp;</td>      $forgotpw .= '<br />' if $forgotpw;
       <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
      </tr>$coursecatalog      if ($loginhelp) {
      <tr>          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
       <td colspan="2">&nbsp;</td>      }
      </tr>  
     </table>  # ---------------------------------------------------- Serve out DES JavaScript
    </td>      {
    <!-- The shaded space between the two main columns -->      my $jsh=Apache::File->new($include."/londes.js");
    <!-- Row 3 Column 2 -->      $r->print(<$jsh>);
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      }
   # ---------------------------------------------------------- Serve rest of page
    <!-- The right main column holding the large LON-CAPA logo-->  
    <!-- Rows 3-4 Column 3 -->      $r->print(
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">      '<div class="LC_Box"'
 ENDSTART     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
         if ($showmainlogo) {  );
             $r->print(<<ENDLOGO);  
     <center>      $r->print(<<ENDSERVERFORM);
      <img src="$logo" alt="" />  <form name="server" action="/adm/authenticate" method="post" target="_top">
     </center>     <input type="hidden" name="logtoken" value="$logtoken" />
 ENDLOGO     <input type="hidden" name="serverid" value="$lonhost" />
         }     <input type="hidden" name="uname" value="" />
         $r->print(<<ENDTOP);     <input type="hidden" name="upass0" value="" />
    </td>     <input type="hidden" name="udom" value="" />
      <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
    <!-- Row 3 Column 4 -->     <input type="hidden" name="localres" value="$env{'form.localres'}" />
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>    </form>
   </tr>  ENDSERVERFORM
   <tr>      my $coursecatalog;
       if (($showcoursecat eq '') || ($showcoursecat)) {
    <!-- The entry form -->          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
    <!-- Row 4 Column 1 -->      }
    <td align="center" valign="middle" bgcolor="$sidebg">      my $newuserlink;
 ENDTOP      if ($shownewuserlink) {
     } else {          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
         $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'      }
                  .'<h2>'.&mt('Text-based Interface Login').'</h2>'      my $logintitle =
                  .$announcements);          '<h2 class="LC_hcell"'
     }         .' style="background:'.$loginbox_header_bgcol.';'
     $r->print('<form name="client" action="" onsubmit="return(send())">');         .' color:'.$loginbox_header_textcol.'">'
     unless ($fullgraph) {         .$lt{'log'}
         $r->print(<<ENDACCESSOPTIONS);         .'</h2>';
 <h3>$lt{'options_headline'}</h3>  
 <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />      my $noscript_warning='<noscript><span class="LC_warning"><b>'
 <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
 <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />                          .'</b></span></noscript>';
 <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />      my $helpdeskscript;
 <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
 <br />                                         $authdomain,\$helpdeskscript,
 <input type="checkbox" name="remember" /> $lt{'remember'}<hr />                                         $showhelpdesk,\@possdoms);
 ENDACCESSOPTIONS  
     } else {      my $mobileargs;
         $r->print(<<ENDNOOPT);      if ($clientmobile) {
 <input type="hidden" name="imagesuppress"  value="" />          $mobileargs = 'autocapitalize="off" autocorrect="off"';
 <input type="hidden" name="embedsuppress"  value="" />      }
 <input type="hidden" name="appletsuppress"  value="" />      my $loginform=(<<LFORM);
 <input type="hidden" name="fontenhance"  value="" />  <form name="client" action="" onsubmit="return(send())">
 <input type="hidden" name="blackwhite"  value="" />    <input type="hidden" name="lextkey" value="$lextkey" />
 <input type="hidden" name="remember"  value="" />    <input type="hidden" name="uextkey" value="$uextkey" />
 ENDNOOPT    <b><label for="uname">$lt{'un'}</label>:</b><br />
     }    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
     my $logintitle;    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
     if ($loginheader eq 'text') {    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
         $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';    <b><label for="udom">$lt{'dom'}</label>:</b><br />
     } else {    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
         $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.    <input type="submit" value="$lt{'log'}" />
                       &mt('User Authentication').'" /></td>';  </form>
     }  LFORM
     my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'  
                         .'<noscript><div class="LC_warning"><font size="-1">'      if ($showbanner) {
                         .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')          $r->print(<<HEADER);
                         .'</font></div></noscript></td>';  <!-- The LON-CAPA Header -->
     $r->print(<<ENDLOGIN);  <div style="background:$pgbg;margin:0;width:100%;">
      <input type="hidden" name="lextkey" value="$lextkey" />    <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
      <input type="hidden" name="uextkey" value="$uextkey" />  </div>
   HEADER
      <!-- Start the sub-table for text and input alignment -->      }
      <table border="0" cellspacing="0" cellpadding="0">      $r->print(<<ENDTOP);
       <tr>$logintitle</tr>  <div style="float:left;margin-top:0;">
       <tr>$noscript_warning</tr>  <div class="LC_Box" style="background:$loginbox_bg;">
       <tr>    $logintitle
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>    $loginform
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>    $noscript_warning
       </tr>  </div>
       <tr>   
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="upass$now">$lt{'pw'}</label>:</b></font></td>  <div class="LC_Box" style="padding-top: 10px;">
        <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>    $loginhelp
       </tr>    $forgotpw
       <tr>    $contactblock
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="udom">$lt{'dom'}</label>:</b></font></td>    $newuserlink
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>    $coursecatalog
       </tr>  </div>
       <tr>  </div>
        <td bgcolor="$mainbg">&nbsp;</td>  
        <td bgcolor="$mainbg" valign="bottom" align="center">  <div>
         <br />  ENDTOP
         <input type="submit" value="$lt{'log'}" />      if ($showmainlogo) {
        </td>          $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
       </tr>      }
       <tr>  $r->print(<<ENDTOP);
        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">  $announcements
         $loginhelp  </div>
         $forgotpw  <hr style="clear:both;" />
         $newuserlink  ENDTOP
         <br />      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
        </td>      $domainrow = <<"END";
       </tr>        <tr>
      </table>         <td  align="left" valign="top">
      <!-- End sub-table -->          <small><b>$lt{'dom'}:&nbsp;</b></small>
     </form>         </td>
 ENDLOGIN         <td  align="left" valign="top">
     if ($fullgraph) {          <small><tt>&nbsp;$domain</tt></small>
         my $helpdeskscript;         </td>
         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,        </tr>
                                   $version,$authdomain,\$helpdeskscript);  END
  $r->print(<<ENDDOCUMENT);      $serverrow = <<"END";
    </td>        <tr>
          <td  align="left" valign="top">
    <!-- Row 4 Column 2 -->          <small><b>$lt{'serv'}:&nbsp;</b></small>
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>         </td>
          <td align="left" valign="top">
    <!-- Row 4 Column 3 -->          <small><tt>&nbsp;$lonhost ($role)</tt></small>
 <td bgcolor="$mainbg">$announcements</td>         </td>
         </tr>
    <!-- Row 4 Column 4 -->  END
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>      if ($loadlim) {
   </tr>          $loadrow = <<"END";
   <tr>        <tr>
          <td align="left" valign="top">
    <!-- Row 5 Column 1 -->          <small><b>$lt{'load'}:&nbsp;</b></small>
    <td bgcolor="$sidebg" valign="middle" align="left">         </td>
      <br />         <td align="left" valign="top">
      <table border="0" cellspacing="0" cellpadding="0">          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
       <tr>         </td>
        <td bgcolor="$sidebg" align="left" valign="top">        </tr>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>  END
        </td>      }
        <td bgcolor="$sidebg" align="left" valign="middle">      if ($uloadlim) {
         <small><tt>&nbsp;$domain</tt></small>          $userloadrow = <<"END";
        </td>        <tr>
       </tr>         <td align="left" valign="top">
       <tr>          <small><b>$lt{'userload'}:&nbsp;</b></small>
        <td bgcolor="$sidebg" align="left" valign="top">         </td>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>         <td align="left" valign="top">
        </td>          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
        <td bgcolor="$sidebg" align="left" valign="middle">         </td>
         <small><tt>&nbsp;$lonhost ($role)</tt></small>        </tr>
        </td>  END
       </tr>      }
       <tr>      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">          $versionrow = <<"END";
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small></span>        <tr>
        </td>         <td colspan="2" align="left">
        <td bgcolor="$sidebg" align="left" valign="middle">          <small>$version</small>
         <small><tt>&nbsp;$loadpercent%</tt></small>         </td>
        </td>        </tr>
       </tr>  END
       <tr>      }
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">  
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small></span>      $r->print(<<ENDDOCUMENT);
        </td>      <div style="float: left;">
        <td bgcolor="$sidebg" align="left" valign="middle">       <table border="0" cellspacing="0" cellpadding="0">
         <small><tt>&nbsp;$userloadpercent%</tt></small>  $domainrow
        </td>  $serverrow
       </tr>  $loadrow    
      </table>  $userloadrow
      <br />  $versionrow
     $contactblock       </table>
    </td>      </div>
       <div style="float: right;">
    <!-- Row 5 Column 2 -->      $domainlogo
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      </div>
       <br style="clear:both;" />
    <!-- Row 5 Column 3 -->   </div>
    <td width="100%" valign="bottom" bgcolor="$mainbg">  
 $domainlogo  <script type="text/javascript">
 </td>  // <![CDATA[
   // the if prevents the script error if the browser can not handle this
    <!-- Row 5 Column 4 -->  if ( document.client.uname ) { document.client.uname.focus(); }
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>  // ]]>
   </tr>  </script>
   <tr>  $helpdeskscript
   
    <!-- Row 6 Column 1 -->  ENDDOCUMENT
    <td bgcolor="$sidebg">&nbsp;</td>      my %endargs = ( 'noredirectlink' => 1, );
       $r->print(&Apache::loncommon::end_page(\%endargs));
    <!-- Row 6 Column 2 -->      return OK;
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>  }
   
    <!-- Row 6 Column 3 -->  sub check_loginvia {
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>      my ($domain,$lonhost) = @_;
       if ($domain eq '' || $lonhost eq '') {
    <!-- Row 6 Column 4 -->          return;
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>      }
   </tr>      my %domconfhash = &Apache::loncommon::get_domainconf($domain);
  </table>      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
       my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
 <script type="text/javascript">      my $output;
 // <![CDATA[      if ($loginvia ne '') {
 // the if prevents the script error if the browser can not handle this          my $noredirect;
 if ( document.client.uname ) { document.client.uname.focus(); }          my $ip = $ENV{'REMOTE_ADDR'};
 // ]]>          if ($ip eq '127.0.0.1') {
 </script>              $noredirect = 1;
 $helpdeskscript          } else {
               if ($loginvia_exempt ne '') {
 ENDDOCUMENT                  my @exempt = split(',',$loginvia_exempt);
 }                  if (grep(/^\Q$ip\E$/,@exempt)) {
     my %endargs = ( 'noredirectlink' => 1, );                      $noredirect = 1;
     $r->print(&Apache::loncommon::end_page(\%endargs));                  }
     return OK;              }
 }          }
           unless ($noredirect) {
 sub contactdisplay {              my ($newhost,$path);
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;              if ($loginvia =~ /:/) {
     my $contactblock;                  ($newhost,$path) = split(':',$loginvia);
     my $showhelpdesk = 0;              } else {
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};                  $newhost = $loginvia;
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {              }
         $showhelpdesk = 1;              if ($newhost ne $lonhost) {
     }                  if (&Apache::lonnet::hostname($newhost) ne '') {
     if ($servadm && $showadminmail) {                      $output = &redirect_page($newhost,$path);
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.                  }
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';              }
     }          }
     if ($showhelpdesk) {      }
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';      return $output;
         my $thisurl = &escape('/adm/login');  }
         $$helpdeskscript = <<"ENDSCRIPT";  
 <script type="text/javascript">  sub redirect_page {
 // <![CDATA[      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'};
 }      }
 // ]]>      my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
 </script>                                                      {'redirect' => [0,$url],});
 ENDSCRIPT      my $end_page   = &Apache::loncommon::end_page();
     }      return $start_page.$end_page;
     $contactblock .= <<"ENDBLOCK";  }
      &nbsp;&nbsp;&nbsp;$version  
 ENDBLOCK  sub contactdisplay {
     return $contactblock;      my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
 }          $possdoms) = @_;
       my $contactblock;
 sub forgotpwdisplay {      my $origmail;
     my (%lt) = @_;      if (ref($possdoms) eq 'ARRAY') {
     my $prompt_for_resetpw = 1;           if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
     if ($prompt_for_resetpw) {              $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br />';          }
     }      }
     return;      my $requestmail =
 }          &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                    $authdomain,$origmail);
 sub loginhelpdisplay {      unless ($showhelpdesk eq '0') {
     my (%lt) = @_;          if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
     my $login_help = 1;              $showhelpdesk = 1;
     if ($login_help) {          } else {
         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';              $showhelpdesk = 0;
     }          }
     return;      }
 }      if ($servadm && $showadminmail) {
           $contactblock .= $$lt{'servadm'}.':<br />'.
 sub coursecatalog_link {                           '<tt>'.$servadm.'</tt><br />';
     my ($linkname) = @_;      }
     return <<"END";      if ($showhelpdesk) {
      <tr>          $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
       <td>&nbsp;</td>          my $thisurl = &escape('/adm/login');
       <td><a href="/adm/coursecatalog"><b>$linkname</b></a></td>          $$helpdeskscript = <<"ENDSCRIPT";
      </tr>  <script type="text/javascript">
 END  // <![CDATA[
 }  function helpdesk() {
       var possdom = document.client.udom.value;
 sub newuser_link {      var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
     my ($linkname) = @_;      if (codedom == '') {
     return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';          codedom = "$authdomain";
 }      }
       var querystr = "origurl=$thisurl&codedom="+codedom;
 1;      document.location.href = "/adm/helpdesk?"+querystr;
 __END__      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.1.106.4.2  
changed lines
  Added in v.1.170

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