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Diff for /loncom/auth/lonlogin.pm between versions 1.100 and 1.170

version 1.100, 2008/01/24 15:06:21 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',        $ENV{'REDIRECT_QUERY_STRING'}),
   'token']);   ['interface','username','domain','firsturl','localpath','localres',
     'token','role','symb','iptoken']);
 # -- check if they are a migrating user      if (!defined($env{'form.firsturl'})) {
     if (defined($env{'form.token'})) {          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
  return &Apache::migrateuser::handler($r);      }
     }  
   # -- check if they are a migrating user
     &Apache::loncommon::no_cache($r);      if (defined($env{'form.token'})) {
     &Apache::lonlocal::get_language_handle($r);   return &Apache::migrateuser::handler($r);
     &Apache::loncommon::content_type($r,'text/html');      }
     $r->send_http_header;  
     return OK if $r->header_only;  # For "public user" - remove any exising "public" cookie, as user really wants to log-in
       my ($handle,$lonidsdir,$expire);
       unless ($r->header_only) {
 # Are we re-routing?          $handle = &Apache::lonnet::check_for_valid_session($r);
     if (-e '/home/httpd/html/lon-status/reroute.txt') {          if ($handle ne '') {
  &Apache::lonauth::reroute($r);              $lonidsdir=$r->dir_config('lonIDsDir');
  return OK;              if ($handle=~/^publicuser\_/) {
     }                  unlink($r->dir_config('lonIDsDir')."/$handle.id");
                   undef($handle);
                   $expire = 1;
 # -------------------------------- Prevent users from attempting to login twice              }
     my $handle = &Apache::lonnet::check_for_valid_session($r);          }
     if ($handle=~/^publicuser\_/) {      }
 # For "public user" - remove it, we apparently really want to login  
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      &Apache::loncommon::no_cache($r);
     } elsif ($handle ne '') {      &Apache::lonlocal::get_language_handle($r);
 # Indeed, a valid token is found      &Apache::loncommon::content_type($r,'text/html');
  my $start_page =       if ($expire) {
     &Apache::loncommon::start_page('Already logged in');          my $c = new CGI::Cookie(-name    => 'lonPubID',
  my $end_page =                                   -value   => '',
     &Apache::loncommon::end_page();                                  -expires => '-10y',);
  $r->print(          $r->header_out('Set-cookie' => $c);
                   $start_page      }
                  .'<h1>'.&mt('You are already logged in').'</h1>'      $r->send_http_header;
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]logout[_4].',      return OK if $r->header_only;
                   '<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>').'</p>'  
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'  
                  .$end_page  # Are we re-routing?
                  );      my $londocroot = $r->dir_config('lonDocRoot');
         return OK;      if (-e "$londocroot/lon-status/reroute.txt") {
     }   &Apache::lonauth::reroute($r);
    return OK;
 # ---------------------------------------------------- No valid token, continue      }
   
  # ---------------------------- Not possible to really login to domain "public"      $env{'form.firsturl'} =~ s/(`)/'/g;
     if ($env{'form.domain'} eq 'public') {  
  $env{'form.domain'}='';  # -------------------------------- Prevent users from attempting to login twice
  $env{'form.username'}='';      if ($handle ne '') {
     }          &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
 # ----------------------------------------------------------- Process Interface   my $start_page =
     $env{'form.interface'}=~s/\W//g;      &Apache::loncommon::start_page('Already logged in');
    my $end_page =
     my $textbrowsers=$r->dir_config('lonTextBrowsers');      &Apache::loncommon::end_page();
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};          my $dest = '/adm/roles';
               if ($env{'form.firsturl'} ne '') {
     foreach (split(/\:/,$textbrowsers)) {              $dest = $env{'form.firsturl'};
  if ($httpbrowser=~/$_/i) {          }
     $env{'form.interface'}='textual';   $r->print(
         }                    $start_page
     }                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
                    .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
     my $fullgraph=($env{'form.interface'} ne 'textual');                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
                    .$end_page
     my $iconpath=                    );
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));          return OK;
       }
     my $domain = &Apache::lonnet::default_login_domain();  
     if (($env{'form.domain'}) &&   # ---------------------------------------------------- No valid token, continue
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {  
  $domain=$env{'form.domain'};  # ---------------------------- Not possible to really login to domain "public"
     }      if ($env{'form.domain'} eq 'public') {
     my $role    = $r->dir_config('lonRole');   $env{'form.domain'}='';
     my $loadlim = $r->dir_config('lonLoadLim');   $env{'form.username'}='';
     my $servadm = $r->dir_config('lonAdmEMail');      }
     my $lonhost = $r->dir_config('lonHostID');  
     my $tabdir  = $r->dir_config('lonTabDir');  # ------ Is this page requested because /adm/migrateuser detected an IP change?
     my $include = $r->dir_config('lonIncludes');      my %sessiondata;
     my $expire  = $r->dir_config('lonExpire');      if ($env{'form.iptoken'}) {
     my $version = $r->dir_config('lonVersion');          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
     my $host_name = &Apache::lonnet::hostname($lonhost);          unless ($sessiondata{'sessionserver'}) {
               my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
 # --------------------------------------------- Default values for login fields              delete($env{'form.iptoken'});
           }
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');      }
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);  # ----------------------------------------------------------- Process Interface
       $env{'form.interface'}=~s/\W//g;
 # ---------------------------------------------------------- Determine own load  
     my $loadavg;      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     {          &Apache::loncommon::decode_user_agent();
  my $loadfile=Apache::File->new('/proc/loadavg');  
  $loadavg=<$loadfile>;      my $iconpath=
     }   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
     $loadavg =~ s/\s.*//g;  
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);      my $lonhost = $r->dir_config('lonHostID');
     my $userloadpercent=&Apache::lonnet::userload();      my $domain = &Apache::lonnet::default_login_domain();
       my $defdom = $domain;
 # ------------------------------------------------------- Do the load balancing      if ($lonhost ne '') {
     my $otherserver= &Apache::lonnet::absolute_url($host_name);          unless ($sessiondata{'sessionserver'}) {
     my $firsturl=              my $redirect = &check_loginvia($domain,$lonhost);
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});              if ($redirect) {
 # ---------------------------------------------------------- Are we overloaded?                  $r->print($redirect);
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {                  return OK;
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);              }
  if ($unloaded) { $otherserver=$unloaded; }          }
     }      }
   
 # ----------------------------------------------------------- Get announcements      if (($sessiondata{'domain'}) &&
     my $announcements=&Apache::lonnet::getannounce();          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
 # -------------------------------------------------------- Set login parameters          $domain=$sessiondata{'domain'};
       } elsif (($env{'form.domain'}) &&
     my @hexstr=('0','1','2','3','4','5','6','7',   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
                 '8','9','a','b','c','d','e','f');   $domain=$env{'form.domain'};
     my $lkey='';      }
     for (0..7) {  
         $lkey.=$hexstr[rand(15)];      my $role    = $r->dir_config('lonRole');
     }      my $loadlim = $r->dir_config('lonLoadLim');
       my $uloadlim= $r->dir_config('lonUserLoadLim');
     my $ukey='';      my $servadm = $r->dir_config('lonAdmEMail');
     for (0..7) {      my $tabdir  = $r->dir_config('lonTabDir');
         $ukey.=$hexstr[rand(15)];      my $include = $r->dir_config('lonIncludes');
     }      my $expire  = $r->dir_config('lonExpire');
       my $version = $r->dir_config('lonVersion');
     my $lextkey=hex($lkey);      my $host_name = &Apache::lonnet::hostname($lonhost);
     if ($lextkey>2147483647) { $lextkey-=4294967296; }  
   # --------------------------------------------- Default values for login fields
     my $uextkey=hex($ukey);     
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      my ($authusername,$authdomain);
       if ($sessiondata{'username'}) {
 # -------------------------------------------------------- Store away log token          $authusername=$sessiondata{'username'};
     my $logtoken=Apache::lonnet::reply(      } else {
        'tmpput:'.$ukey.$lkey.'&'.$firsturl,          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
        $lonhost);          $authusername=($env{'form.username'}?$env{'form.username'}:'');
       }
 # ------------------- If we cannot talk to ourselves, we are in serious trouble      if ($sessiondata{'domain'}) {
           $authdomain=$sessiondata{'domain'};
     if ($logtoken eq 'con_lost') {      } else {
         my $spares='';          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
  my $last;          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
         foreach my $hostid (sort      }
     {  
  &Apache::lonnet::hostname($a) cmp  # ---------------------------------------------------------- Determine own load
     &Apache::lonnet::hostname($b);      my $loadavg;
     }      {
     keys(%Apache::lonnet::spareid)) {   my $loadfile=Apache::File->new('/proc/loadavg');
             next if ($hostid eq $lonhost);   $loadavg=<$loadfile>;
     my $hostname = &Apache::lonnet::hostname($hostid);      }
     next if ($last eq $hostname);      $loadavg =~ s/\s.*//g;
             $spares.='<br /><font size="+1"><a href="http://'.  
                 $hostname.      my ($loadpercent,$userloadpercent);
                 '/adm/login?domain='.$authdomain.'">'.      if ($loadlim) {
                 $hostname.'</a>'.          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
                 ' (preferred)</font>'.$/;      }
     $last=$hostname;      if ($uloadlim) {
         }          $userloadpercent=&Apache::lonnet::userload();
         $spares.= '<br />';      }
  my %all_hostnames = &Apache::lonnet::all_hostnames();  
         foreach my $hostid (sort      my $firsturl=
     {      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
  &Apache::lonnet::hostname($a) cmp  
     &Apache::lonnet::hostname($b);  # ----------------------------------------------------------- Get announcements
     }      my $announcements=&Apache::lonnet::getannounce();
     keys(%all_hostnames)) {  # -------------------------------------------------------- Set login parameters
             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});  
     my $hostname = &Apache::lonnet::hostname($hostid);      my @hexstr=('0','1','2','3','4','5','6','7',
             next if ($last eq $hostname);                  '8','9','a','b','c','d','e','f');
             $spares.='<br /><a href="http://'.      my $lkey='';
                 $hostname.      for (0..7) {
                 '/adm/login?domain='.$authdomain.'">'.          $lkey.=$hexstr[rand(15)];
                 $hostname.'</a>';      }
     $last=$hostname;  
         }      my $ukey='';
  $r->print(<<ENDTROUBLE);      for (0..7) {
 <html>          $ukey.=$hexstr[rand(15)];
 <head><title>The LearningOnline Network with CAPA</title></head>      }
 <body bgcolor="#FFFFFF">  
 <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />      my $lextkey=hex($lkey);
 <h3>This LON-CAPA server is temporarily not available for login</h3>      if ($lextkey>2147483647) { $lextkey-=4294967296; }
 <p>Please attempt to login to one of the following servers:</p>$spares  
 </body>      my $uextkey=hex($ukey);
 </html>      if ($uextkey>2147483647) { $uextkey-=4294967296; }
 ENDTROUBLE  
         return OK;  # -------------------------------------------------------- Store away log token
     }      my $tokenextras;
       if ($env{'form.role'}) {
 # ----------------------------------------------- Apparently we are in business          $tokenextras = '&role='.&escape($env{'form.role'});
     $servadm=~s/\,/\<br \/\>/g;      }
       if ($env{'form.symb'}) {
 # ----------------------------------------------------------- Front page design          if (!$tokenextras) {
     my $pgbg=              $tokenextras = '&';
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');          }
     my $font=          $tokenextras .= '&symb='.&escape($env{'form.symb'});
       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');      }
     my $link=      if ($env{'form.iptoken'}) {
       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');          if (!$tokenextras) {
     my $vlink=              $tokenextras = '&&';
       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');          }
     my $alink=&Apache::loncommon::designparm('login.alink',$domain);          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
     my $mainbg=      }
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');      my $logtoken=Apache::lonnet::reply(
     my $sidebg=         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');         $lonhost);
     my $textcol =   
       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
     my $bgcol =  #    we are in serious trouble
       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');  
     my $logo=&Apache::loncommon::designparm('login.logo',$domain);      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
     my $img=&Apache::loncommon::designparm('login.img',$domain);          if ($logtoken eq 'no_such_host') {
     my $domainlogo=&Apache::loncommon::domainlogo($domain);              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
     my $login=&Apache::loncommon::designparm('login.login',$domain);          }
     if ($login eq '') {          my $spares='';
         $login = $iconpath.'/'.&mt('userauthentication.gif');   my $last;
     }          foreach my $hostid (sort
     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);      {
     my $showcoursecat =   &Apache::lonnet::hostname($a) cmp
         &Apache::loncommon::designparm('login.coursecatalog',$domain);      &Apache::lonnet::hostname($b);
     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);      }
     my $now=time;      keys(%Apache::lonnet::spareid)) {
     my $js = (<<ENDSCRIPT);              next if ($hostid eq $lonhost);
       my $hostname = &Apache::lonnet::hostname($hostid);
  <script language="JavaScript">      next if (($last eq $hostname) || ($hostname eq ''));
     function send()              $spares.='<br /><font size="+1"><a href="http://'.
     {                  $hostname.
         this.document.server.elements.uname.value                  '/adm/login?domain='.$authdomain.'">'.
        =this.document.client.elements.uname.value;                  $hostname.'</a>'.
                   ' '.&mt('(preferred)').'</font>'.$/;
         this.document.server.elements.udom.value      $last=$hostname;
        =this.document.client.elements.udom.value;          }
           if ($spares) {
         this.document.server.elements.imagesuppress.value              $spares.= '<br />';
        =this.document.client.elements.imagesuppress.checked;          }
           my %all_hostnames = &Apache::lonnet::all_hostnames();
         this.document.server.elements.embedsuppress.value          foreach my $hostid (sort
        =this.document.client.elements.embedsuppress.checked;      {
    &Apache::lonnet::hostname($a) cmp
         this.document.server.elements.appletsuppress.value      &Apache::lonnet::hostname($b);
        =this.document.client.elements.appletsuppress.checked;      }
       keys(%all_hostnames)) {
         this.document.server.elements.fontenhance.value              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
        =this.document.client.elements.fontenhance.checked;              my $hostname = &Apache::lonnet::hostname($hostid);
               next if (($last eq $hostname) || ($hostname eq ''));
         this.document.server.elements.blackwhite.value              $spares.='<br /><a href="http://'.
        =this.document.client.elements.blackwhite.checked;               $hostname.
                '/adm/login?domain='.$authdomain.'">'.
         this.document.server.elements.remember.value               $hostname.'</a>';
        =this.document.client.elements.remember.checked;              $last=$hostname;
            }
         uextkey=this.document.client.elements.uextkey.value;           $r->print(
         lextkey=this.document.client.elements.lextkey.value;     '<html>'
         initkeys();    .'<head><title>'
     .&mt('The LearningOnline Network with CAPA')
         this.document.server.elements.upass0.value    .'</title></head>'
             =crypted(this.document.client.elements.upass$now.value.substr(0,15));    .'<body bgcolor="#FFFFFF">'
         this.document.server.elements.upass1.value    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
             =crypted(this.document.client.elements.upass$now.value.substr(15,15));    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
         this.document.server.elements.upass2.value    .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
             =crypted(this.document.client.elements.upass$now.value.substr(30,15));          if ($spares) {
               $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
         this.document.client.elements.uname.value='';                       .'</p>'
         this.document.client.elements.upass$now.value='';                       .$spares);
           }
         this.document.server.submit();          $r->print('</body>'
         return false;                   .'</html>'
     }          );
  </script>          return OK;
       }
 ENDSCRIPT  
   # ----------------------------------------------- Apparently we are in business
 # --------------------------------------------------- Print login screen header      $servadm=~s/\,/\<br \/\>/g;
   
     my %add_entries = (topmargin    => "0",  # ----------------------------------------------------------- Front page design
                        leftmargin   => "0",      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
                        marginheight => "0",      my $font=&Apache::loncommon::designparm('login.font',$domain);
                        marginwidth  => "0",      my $link=&Apache::loncommon::designparm('login.link',$domain);
                        bgcolor      => "$pgbg",      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
                        text         => "$font",      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
                        link         => "$link",      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
                        vlink        => "$vlink",      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
                        alink        => "$alink",);      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
       my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
                                        { 'redirect'       => [$expire,'/adm/roles'],       my $img=&Apache::loncommon::designparm('login.img',$domain);
                                          'add_entries' => \%add_entries,      my $domainlogo=&Apache::loncommon::domainlogo($domain);
                                          'only_body'   => 1,}));      my $showbanner = 1;
       my $showmainlogo = 1;
 # ----------------------------------------------------------------------- Texts      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
           $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
 my %lt=&Apache::lonlocal::texthash(      }
   'un'  => 'Username',      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
   'pw'  => 'Password',          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
   'dom' => 'Domain',      }
   'perc' => 'percent',      my $showadminmail;
   'load' => 'Load',      my @possdoms = &Apache::lonnet::current_machine_domains();
                   'userload' => 'User Load',      if (grep(/^\Q$domain\E$/,@possdoms)) {
                   'about'  => 'About LON-CAPA',          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
                   'access' => 'Accessibility Options',      }
                   'catalog' => 'Course Catalog',      my $showcoursecat =
   'log' => 'Log in',          &Apache::loncommon::designparm('login.coursecatalog',$domain);
   'help' => 'Log-in Help',      my $shownewuserlink =
   'serv' => 'Server',          &Apache::loncommon::designparm('login.newuser',$domain);
                   'servadm' => 'Server Administration',      my $showhelpdesk =
                   'helpdesk' => 'Contact Helpdesk',          &Apache::loncommon::designparm('login.helpdesk',$domain);
                   'forgotpw' => 'Forgot password?',      my $now=time;
                   'options_headline' => 'Select Accessibility Options',      my $js = (<<ENDSCRIPT);
                   'sprs_img' => 'Suppress rendering of images',  
                   'sprs_applet' => 'Suppress Java applets',  <script type="text/javascript" language="JavaScript">
                   'sprs_embed' => 'Suppress rendering of embedded multimedia',  // <![CDATA[
                   'sprs_font' => 'Increase font size',  function send()
                   'sprs_blackwhite' => 'Switch to black and white mode',  {
                   'remember' => 'Remember these settings for next login');  this.document.server.elements.uname.value
 # -------------------------------------------------- Change password field name  =this.document.client.elements.uname.value;
     my $forgotpw = &forgotpwdisplay(%lt);  
     my $loginhelp = &loginhelpdisplay(%lt);  this.document.server.elements.udom.value
   =this.document.client.elements.udom.value;
 # ---------------------------------------------------- Serve out DES JavaScript  
     {  uextkey=this.document.client.elements.uextkey.value;
         my $jsh=Apache::File->new($include."/londes.js");  lextkey=this.document.client.elements.lextkey.value;
         $r->print(<$jsh>);  initkeys();
     }  
 # ---------------------------------------------------------- Serve rest of page  if(this.document.server.action.substr(0,5) === 'http:'){
       this.document.server.elements.upass0.value
     if ($fullgraph) {          =getCrypted(this.document.client.elements.upass$now.value);
  $r->print(  } else {
   '<table width="100%" cellpadding=0 cellspacing=0 border=0>');      this.document.server.elements.upass0.value
     }          =this.document.client.elements.upass$now.value;
   }
     $r->print(<<ENDSERVERFORM);  
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">  this.document.client.elements.uname.value='';
    <input type="hidden" name="logtoken" value="$logtoken" />  this.document.client.elements.upass$now.value='';
    <input type="hidden" name="serverid" value="$lonhost" />  
    <input type="hidden" name="interface" value="$env{'form.interface'}" />  this.document.server.submit();
    <input type="hidden" name="uname" value="" />  return false;
    <input type="hidden" name="upass0" value="" />  }
    <input type="hidden" name="upass1" value="" />  
    <input type="hidden" name="upass2" value="" />  function enableInput() {
    <input type="hidden" name="udom" value="" />      this.document.client.elements.upass$now.removeAttribute("readOnly");
    <input type="hidden" name="imagesuppress"  value="" />      this.document.client.elements.uname.removeAttribute("readOnly");
    <input type="hidden" name="appletsuppress"  value="" />      this.document.client.elements.udom.removeAttribute("readOnly");
    <input type="hidden" name="embedsuppress"  value="" />      return;
    <input type="hidden" name="fontenhance"  value="" />  }
    <input type="hidden" name="blackwhite"  value="" />  
    <input type="hidden" name="remember"  value="" />  // ]]>
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />  </script>
    <input type="hidden" name="localres" value="$env{'form.localres'}" />  
   </form>  ENDSCRIPT
 ENDSERVERFORM  
     my $coursecatalog;  # --------------------------------------------------- Print login screen header
     if (($showcoursecat eq '') || ($showcoursecat)) {  
         $coursecatalog = &coursecatalog_link($lt{'catalog'});      my %add_entries = (
     }         bgcolor      => "$mainbg",
     if ($fullgraph) { $r->print(<<ENDTOP);         text         => "$font",
   <!-- The LON-CAPA Header -->         link         => "$link",
   <tr>         vlink        => "$vlink",
          alink        => "$alink",
    <!-- Row 1 Columns 2-4 -->                 onload       => 'javascript:enableInput();',);
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td>  
   </tr>      my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
       @hosts = &Apache::lonnet::current_machine_ids();
   <!-- The gray bar that starts the two table frames -->      $lonhost_in_use = $lonhost;
   <tr>      if (@hosts > 1) {
           foreach my $hostid (@hosts) {
    <!-- Row 2 Column 1 -->              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>                  $lonhost_in_use = $hostid;
                   last;
    <!-- Row 2 Column 2 -->              }
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>          }
       }
    <!-- Row 2 Column 3 -->      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
       $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
    <!-- Row 2 Column 4 -->      if ($headextra) {
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>          my $omitextra;
   </tr>          if ($headextra_exempt ne '') {
   <tr>              my @exempt = split(',',$headextra_exempt);
                  my $ip = $ENV{'REMOTE_ADDR'};
    <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->              if (grep(/^\Q$ip\E$/,@exempt)) {
    <!-- Row 3 Column 1 -->                  $omitextra = 1;
    <td valign="top" height="60" align="left" bgcolor="$sidebg">              }
     <table cellpadding="0" cellspacing="2" border="0">          }
      <tr>          unless ($omitextra) {
       <td>&nbsp;</td>              my $confname = $defdom.'-domainconfig';
       <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
      </tr>                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
      <tr>                  unless ($extra eq '-1') {
       <td>&nbsp;</td>                      $js .= "\n".$extra."\n";
       <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>                  }
      </tr>$coursecatalog              }
      <tr>          }
       <td colspan="2">&nbsp;</td>      }
      </tr>  
     </table>      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
    </td>         { 'redirect'       => [$expire,'/adm/roles'],
    <!-- The shaded space between the two main columns -->   'add_entries' => \%add_entries,
    <!-- Row 3 Column 2 -->   'only_body'   => 1,}));
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  
   # ----------------------------------------------------------------------- Texts
    <!-- The right main column holding the large LON-CAPA logo-->  
    <!-- Rows 3-4 Column 3 -->      my %lt=&Apache::lonlocal::texthash(
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">            'un'       => 'Username',
     <center>            'pw'       => 'Password',
      <img src="$logo" alt="" />            'dom'      => 'Domain',
     </center>            'perc'     => 'percent',
    </td>            'load'     => 'Server Load',
             'userload' => 'User Load',
    <!-- Row 3 Column 4 -->            'catalog'  => 'Course/Community Catalog',
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>            'log'      => 'Log in',
   </tr>            'help'     => 'Log-in Help',
   <tr>            'serv'     => 'Server',
             'servadm'  => 'Server Administration',
    <!-- The entry form -->            'helpdesk' => 'Contact Helpdesk',
    <!-- Row 4 Column 1 -->            'forgotpw' => 'Forgot password?',
    <td align="center" valign="middle" bgcolor="$sidebg">            'newuser'  => 'New User?',
 ENDTOP         );
 } else {  # -------------------------------------------------- Change password field name
     $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'  
              .'<h2>'.&mt('Text-based Interface Login').'</h2>'      my $forgotpw = &forgotpwdisplay(%lt);
              .$announcements);      $forgotpw .= '<br />' if $forgotpw;
 }      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
     $r->print('<form name="client" onsubmit="return(send())">');      if ($loginhelp) {
     unless ($fullgraph) {          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
         $r->print(<<ENDACCESSOPTIONS);      }
 <h3>$lt{'options_headline'}</h3>  
 <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />  # ---------------------------------------------------- Serve out DES JavaScript
 <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />      {
 <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />      my $jsh=Apache::File->new($include."/londes.js");
 <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />      $r->print(<$jsh>);
 <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />      }
 <br />  # ---------------------------------------------------------- Serve rest of page
 <input type="checkbox" name="remember" /> $lt{'remember'}<hr />  
 ENDACCESSOPTIONS      $r->print(
 } else {      '<div class="LC_Box"'
     $r->print(<<ENDNOOPT);     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
 <input type="hidden" name="imagesuppress"  value="" />  );
 <input type="hidden" name="embedsuppress"  value="" />  
 <input type="hidden" name="appletsuppress"  value="" />      $r->print(<<ENDSERVERFORM);
 <input type="hidden" name="fontenhance"  value="" />  <form name="server" action="/adm/authenticate" method="post" target="_top">
 <input type="hidden" name="blackwhite"  value="" />     <input type="hidden" name="logtoken" value="$logtoken" />
 <input type="hidden" name="remember"  value="" />     <input type="hidden" name="serverid" value="$lonhost" />
 ENDNOOPT     <input type="hidden" name="uname" value="" />
 }     <input type="hidden" name="upass0" value="" />
     my $logintitle;     <input type="hidden" name="udom" value="" />
     if ($loginheader eq 'text') {     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
         $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';     <input type="hidden" name="localres" value="$env{'form.localres'}" />
     } else {    </form>
         $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.  ENDSERVERFORM
                       &mt('User Authentication').'" /></td>';      my $coursecatalog;
     }      if (($showcoursecat eq '') || ($showcoursecat)) {
     $r->print(<<ENDLOGIN);          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
      <input type="hidden" name="lextkey" value="$lextkey">      }
      <input type="hidden" name="uextkey" value="$uextkey">      my $newuserlink;
       if ($shownewuserlink) {
      <!-- Start the sub-table for text and input alignment -->          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
      <table border=0 cellspacing=0 cellpadding=0>      }
       <tr>$logintitle</tr>      my $logintitle =
       <tr>          '<h2 class="LC_hcell"'
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>         .' style="background:'.$loginbox_header_bgcol.';'
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>         .' color:'.$loginbox_header_textcol.'">'
       </tr>         .$lt{'log'}
       <tr>         .'</h2>';
        <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>      my $noscript_warning='<noscript><span class="LC_warning"><b>'
       </tr>                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
       <tr>                          .'</b></span></noscript>';
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="udom">$lt{'dom'}</label>:</b></font></td>      my $helpdeskscript;
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
       </tr>                                         $authdomain,\$helpdeskscript,
       <tr>                                         $showhelpdesk,\@possdoms);
        <td bgcolor="$mainbg">&nbsp;</td>  
        <td bgcolor="$mainbg" valign="bottom" align="center">      my $mobileargs;
         <br />      if ($clientmobile) {
         <input type="submit" value="$lt{'log'}" />          $mobileargs = 'autocapitalize="off" autocorrect="off"';
        </td>      }
       </tr>      my $loginform=(<<LFORM);
       <tr>  <form name="client" action="" onsubmit="return(send())">
        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">    <input type="hidden" name="lextkey" value="$lextkey" />
         $loginhelp    <input type="hidden" name="uextkey" value="$uextkey" />
         $forgotpw    <b><label for="uname">$lt{'un'}</label>:</b><br />
        </td>    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
       </tr>    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
      </table>    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
      <!-- End sub-table -->    <b><label for="udom">$lt{'dom'}</label>:</b><br />
     </form>    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
 ENDLOGIN    <input type="submit" value="$lt{'log'}" />
     if ($fullgraph) {  </form>
         my $helpdeskscript;  LFORM
         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,  
                                   $version,$authdomain,\$helpdeskscript);      if ($showbanner) {
  $r->print(<<ENDDOCUMENT);          $r->print(<<HEADER);
    </td>  <!-- The LON-CAPA Header -->
   <div style="background:$pgbg;margin:0;width:100%;">
    <!-- Row 4 Column 2 -->    <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  </div>
   HEADER
    <!-- Row 4 Column 3 -->      }
 <td bgcolor="$mainbg">$announcements</td>      $r->print(<<ENDTOP);
   <div style="float:left;margin-top:0;">
    <!-- Row 4 Column 4 -->  <div class="LC_Box" style="background:$loginbox_bg;">
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>    $logintitle
   </tr>    $loginform
   <tr>    $noscript_warning
   </div>
    <!-- Row 5 Column 1 -->   
    <td bgcolor="$sidebg" valign="middle" align="left">  <div class="LC_Box" style="padding-top: 10px;">
      <br />    $loginhelp
      <table border=0 cellspacing=0 cellpadding=0>    $forgotpw
       <tr>    $contactblock
        <td bgcolor="$sidebg" align="left" valign="top">    $newuserlink
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>    $coursecatalog
        </td>  </div>
        <td bgcolor="$sidebg" align="left" valign="top">  </div>
         <small><tt>&nbsp;$domain</tt></small>  
        </td>  <div>
       </tr>  ENDTOP
       <tr>      if ($showmainlogo) {
        <td bgcolor="$sidebg" align="left" valign="top">          $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>      }
        </td>  $r->print(<<ENDTOP);
        <td bgcolor="$sidebg" align="left" valign="top">  $announcements
         <small><tt>&nbsp;$lonhost ($role)</tt></small>  </div>
        </td>  <hr style="clear:both;" />
       </tr>  ENDTOP
       <tr>      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
        <td bgcolor="$sidebg" align="left" valign="top">      $domainrow = <<"END";
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small>        <tr>
        </td>         <td  align="left" valign="top">
        <td bgcolor="$sidebg" align="left" valign="top">          <small><b>$lt{'dom'}:&nbsp;</b></small>
         <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>         </td>
        </td>         <td  align="left" valign="top">
       </tr>          <small><tt>&nbsp;$domain</tt></small>
       <tr>         </td>
        <td bgcolor="$sidebg" align="left" valign="top">        </tr>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small>  END
        </td>      $serverrow = <<"END";
        <td bgcolor="$sidebg" align="left" valign="top">        <tr>
         <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>         <td  align="left" valign="top">
        </td>          <small><b>$lt{'serv'}:&nbsp;</b></small>
       </tr>         </td>
      </table>         <td align="left" valign="top">
      <br />          <small><tt>&nbsp;$lonhost ($role)</tt></small>
     $contactblock         </td>
    </td>        </tr>
   END
    <!-- Row 5 Column 2 -->      if ($loadlim) {
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>          $loadrow = <<"END";
         <tr>
    <!-- Row 5 Column 3 -->         <td align="left" valign="top">
    <td width="100%" valign="bottom" bgcolor="$mainbg">          <small><b>$lt{'load'}:&nbsp;</b></small>
 $domainlogo         </td>
 </td>         <td align="left" valign="top">
           <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
    <!-- Row 5 Column 4 -->         </td>
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>        </tr>
   </tr>  END
   <tr>      }
       if ($uloadlim) {
    <!-- Row 6 Column 1 -->          $userloadrow = <<"END";
    <td bgcolor="$sidebg">&nbsp;</td>        <tr>
          <td align="left" valign="top">
    <!-- Row 6 Column 2 -->          <small><b>$lt{'userload'}:&nbsp;</b></small>
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>         </td>
          <td align="left" valign="top">
    <!-- Row 6 Column 3 -->          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>         </td>
         </tr>
    <!-- Row 6 Column 4 -->  END
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>      }
   </tr>      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
  </table>          $versionrow = <<"END";
         <tr>
 <script type="text/javascript">         <td colspan="2" align="left">
 // the if prevents the script error if the browser can not handle this          <small>$version</small>
 if ( document.client.uname ) { document.client.uname.focus(); }         </td>
 </script>        </tr>
 $helpdeskscript  END
       }
 ENDDOCUMENT  
 }      $r->print(<<ENDDOCUMENT);
     my %endargs = ( 'noredirectlink' => 1, );      <div style="float: left;">
     $r->print(&Apache::loncommon::end_page(\%endargs));       <table border="0" cellspacing="0" cellpadding="0">
     return OK;  $domainrow
 }  $serverrow
   $loadrow    
 sub contactdisplay {  $userloadrow
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;  $versionrow
     my $contactblock;       </table>
     my $showhelpdesk = 0;      </div>
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};      <div style="float: right;">
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {      $domainlogo
         $showhelpdesk = 1;      </div>
     }      <br style="clear:both;" />
     if ($servadm && $showadminmail) {   </div>
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.  
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';  <script type="text/javascript">
     }  // <![CDATA[
     if ($showhelpdesk) {  // the if prevents the script error if the browser can not handle this
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';  if ( document.client.uname ) { document.client.uname.focus(); }
         my $thisurl = &escape('/adm/login');  // ]]>
         $$helpdeskscript = <<"ENDSCRIPT";  </script>
 <script type="text/javascript">  $helpdeskscript
 function helpdesk() {  
     var codedom = document.client.udom.value;  ENDDOCUMENT
     if (codedom == '') {      my %endargs = ( 'noredirectlink' => 1, );
         codedom = "$authdomain";      $r->print(&Apache::loncommon::end_page(\%endargs));
     }      return OK;
     var querystr = "origurl=$thisurl&codedom="+codedom;  }
     document.location.href = "/adm/helpdesk?"+querystr;  
     return;  sub check_loginvia {
 }      my ($domain,$lonhost) = @_;
 </script>      if ($domain eq '' || $lonhost eq '') {
 ENDSCRIPT          return;
     }      }
     $contactblock .= <<"ENDBLOCK";      my %domconfhash = &Apache::loncommon::get_domainconf($domain);
      &nbsp;&nbsp;&nbsp;$version      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
 ENDBLOCK      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
     return $contactblock;      my $output;
 }      if ($loginvia ne '') {
           my $noredirect;
 sub forgotpwdisplay {          my $ip = $ENV{'REMOTE_ADDR'};
     my (%lt) = @_;          if ($ip eq '127.0.0.1') {
     my $prompt_for_resetpw = 1;               $noredirect = 1;
     if ($prompt_for_resetpw) {          } else {
         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br /><br />';              if ($loginvia_exempt ne '') {
     }                  my @exempt = split(',',$loginvia_exempt);
     return;                  if (grep(/^\Q$ip\E$/,@exempt)) {
 }                      $noredirect = 1;
                   }
 sub loginhelpdisplay {              }
     my (%lt) = @_;          }
     my $login_help = 1;          unless ($noredirect) {
     if ($login_help) {              my ($newhost,$path);
         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';              if ($loginvia =~ /:/) {
     }                  ($newhost,$path) = split(':',$loginvia);
     return;              } else {
 }                  $newhost = $loginvia;
               }
 sub coursecatalog_link {              if ($newhost ne $lonhost) {
     my ($linkname) = @_;                  if (&Apache::lonnet::hostname($newhost) ne '') {
     return <<"END";                      $output = &redirect_page($newhost,$path);
      <tr>                  }
       <td>&nbsp;</td>              }
       <td><a href="/adm/coursecatalog"><b>$linkname</b></a></td>          }
      </tr>      }
 END      return $output;
 }  }
   
 1;  sub redirect_page {
 __END__      my ($desthost,$path) = @_;
       my $protocol = $Apache::lonnet::protocol{$desthost};
       $protocol = 'http' if ($protocol ne 'https');
       unless ($path =~ m{^/}) {
           $path = '/'.$path;
       }
       my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
       if ($env{'form.firsturl'} ne '') {
           $url .='?firsturl='.$env{'form.firsturl'};
       }
       my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
                                                       {'redirect' => [0,$url],});
       my $end_page   = &Apache::loncommon::end_page();
       return $start_page.$end_page;
   }
   
   sub contactdisplay {
       my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
           $possdoms) = @_;
       my $contactblock;
       my $origmail;
       if (ref($possdoms) eq 'ARRAY') {
           if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
               $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
           }
       }
       my $requestmail =
           &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                    $authdomain,$origmail);
       unless ($showhelpdesk eq '0') {
           if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
               $showhelpdesk = 1;
           } else {
               $showhelpdesk = 0;
           }
       }
       if ($servadm && $showadminmail) {
           $contactblock .= $$lt{'servadm'}.':<br />'.
                            '<tt>'.$servadm.'</tt><br />';
       }
       if ($showhelpdesk) {
           $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
           my $thisurl = &escape('/adm/login');
           $$helpdeskscript = <<"ENDSCRIPT";
   <script type="text/javascript">
   // <![CDATA[
   function helpdesk() {
       var possdom = document.client.udom.value;
       var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
       if (codedom == '') {
           codedom = "$authdomain";
       }
       var querystr = "origurl=$thisurl&codedom="+codedom;
       document.location.href = "/adm/helpdesk?"+querystr;
       return;
   }
   // ]]>
   </script>
   ENDSCRIPT
       }
       return $contactblock;
   }
   
   sub forgotpwdisplay {
       my (%lt) = @_;
       my $prompt_for_resetpw = 1;
       if ($prompt_for_resetpw) {
           return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
       }
       return;
   }
   
   sub coursecatalog_link {
       my ($linkname) = @_;
       return <<"END";
         <a href="/adm/coursecatalog">$linkname</a>
   END
   }
   
   sub newuser_link {
       my ($linkname) = @_;
       return '<a href="/adm/createaccount">'.$linkname.'</a>';
   }
   
   1;
   __END__
Removed from v.1.100  
changed lines
  Added in v.1.170

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