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Diff for /loncom/auth/lonlogin.pm between versions 1.106.4.8 and 1.172

version 1.106.4.8, 2010/03/31 23:18:27 version 1.172, 2018/01/12 15:26:39
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # Login Screen  # Login Screen
 #  #
 # $Id$  # $Id$
 #  #
 # Copyright Michigan State University Board of Trustees  # Copyright Michigan State University Board of Trustees
 #  #
 # This file is part of the LearningOnline Network with CAPA (LON-CAPA).  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #  #
 # LON-CAPA is free software; you can redistribute it and/or modify  # LON-CAPA is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by  # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or  # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.  # (at your option) any later version.
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
 # You should have received a copy of the GNU General Public License  # You should have received a copy of the GNU General Public License
 # along with LON-CAPA; if not, write to the Free Software  # along with LON-CAPA; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #  #
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
 package Apache::lonlogin;  package Apache::lonlogin;
   
 use strict;  use strict;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File ();  use Apache::File ();
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonauth();  use Apache::lonauth();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::migrateuser();  use Apache::migrateuser();
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA;  use LONCAPA;
    use CGI::Cookie();
 sub handler {   
     my $r = shift;  sub handler {
       my $r = shift;
     &Apache::loncommon::get_unprocessed_cgi  
  (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},      &Apache::loncommon::get_unprocessed_cgi
       $ENV{'REDIRECT_QUERY_STRING'}),   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
  ['interface','username','domain','firsturl','localpath','localres',        $ENV{'REDIRECT_QUERY_STRING'}),
   'token','role','symb']);   ['interface','username','domain','firsturl','localpath','localres',
     if (!defined($env{'form.firsturl'})) {    'token','role','symb','iptoken']);
         &Apache::lonacc::get_posted_cgi($r,['firsturl']);      if (!defined($env{'form.firsturl'})) {
     }          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
       }
 # -- check if they are a migrating user      if (!defined($env{'form.firsturl'})) {
     if (defined($env{'form.token'})) {          if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) {
  return &Apache::migrateuser::handler($r);              $env{'form.firsturl'} = $ENV{'REDIRECT_URL'};
     }          }
       }
     &Apache::loncommon::no_cache($r);  
     &Apache::lonlocal::get_language_handle($r);  # -- check if they are a migrating user
     &Apache::loncommon::content_type($r,'text/html');      if (defined($env{'form.token'})) {
     $r->send_http_header;   return &Apache::migrateuser::handler($r);
     return OK if $r->header_only;      }
   
   # For "public user" - remove any exising "public" cookie, as user really wants to log-in
 # Are we re-routing?      my ($handle,$lonidsdir,$expirepub,$userdom);
     if (-e '/home/httpd/html/lon-status/reroute.txt') {      unless ($r->header_only) {
  &Apache::lonauth::reroute($r);          $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
  return OK;          if ($handle ne '') {
     }              $lonidsdir=$r->dir_config('lonIDsDir');
               if ($handle=~/^publicuser\_/) {
                   unlink($r->dir_config('lonIDsDir')."/$handle.id");
 # -------------------------------- Prevent users from attempting to login twice                  undef($handle);
     my $handle = &Apache::lonnet::check_for_valid_session($r);                  undef($userdom);
     if ($handle=~/^publicuser\_/) {                  $expirepub = 1;
 # For "public user" - remove it, we apparently really want to login              }
  unlink($r->dir_config('lonIDsDir')."/$handle.id");          }
     } elsif ($handle ne '') {      }
 # Indeed, a valid token is found  
  my $start_page =       &Apache::loncommon::no_cache($r);
     &Apache::loncommon::start_page('Already logged in');      &Apache::lonlocal::get_language_handle($r);
  my $end_page =       &Apache::loncommon::content_type($r,'text/html');
     &Apache::loncommon::end_page();      if ($expirepub) {
         my $dest = '/adm/roles';          my $c = new CGI::Cookie(-name    => 'lonPubID',
         if ($env{'form.firsturl'} ne '') {                                  -value   => '',
             $dest = $env{'form.firsturl'};                                  -expires => '-10y',);
         }          $r->header_out('Set-cookie' => $c);
  $r->print(      } elsif (($handle eq '') && ($userdom ne '')) {
                   $start_page          my $c = new CGI::Cookie(-name    => 'lonID',
                  .'<h1>'.&mt('You are already logged in!').'</h1>'                                  -value   => '',
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',                                  -expires => '-10y',);
                   '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'          $r->headers_out->add('Set-cookie' => $c);
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'      }
                  .$end_page      $r->send_http_header;
                  );      return OK if $r->header_only;
         return OK;  
     }  
   # Are we re-routing?
 # ---------------------------------------------------- No valid token, continue      my $londocroot = $r->dir_config('lonDocRoot');
       if (-e "$londocroot/lon-status/reroute.txt") {
  # ---------------------------- Not possible to really login to domain "public"   &Apache::lonauth::reroute($r);
     if ($env{'form.domain'} eq 'public') {   return OK;
  $env{'form.domain'}='';      }
  $env{'form.username'}='';  
     }  #
 # ----------------------------------------------------------- Process Interface  # If browser sent an old cookie for which the session file had been removed
     $env{'form.interface'}=~s/\W//g;  # check if configuration for user's domain has a portal URL set.  If so
   # switch user's log-in to the portal.
     my $textbrowsers=$r->dir_config('lonTextBrowsers');  #
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};  
           if (($handle eq '') && ($userdom ne '')) {
     foreach (split(/\:/,$textbrowsers)) {          my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
  if ($httpbrowser=~/$_/i) {          if ($domdefaults{'portal_def'} =~ /^https?\:/) {
     $env{'form.interface'}='textual';              my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
         }                                            {'redirect' => [0,$domdefaults{'portal_def'}],});
     }              my $end_page   = &Apache::loncommon::end_page();
               $r->print($start_page.$end_page);
     my $fullgraph=($env{'form.interface'} ne 'textual');              return OK;
           }
     my $iconpath=       }
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));  
       $env{'form.firsturl'} =~ s/(`)/'/g;
     my $lonhost = $r->dir_config('lonHostID');  
     my $domain = &Apache::lonnet::default_login_domain();  # -------------------------------- Prevent users from attempting to login twice
     if ($lonhost ne '') {      if ($handle ne '') {
         my $redirect = &check_loginvia($domain,$lonhost);          &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
         if ($redirect) {   my $start_page =
             $r->print($redirect);      &Apache::loncommon::start_page('Already logged in');
             return OK;   my $end_page =
         }      &Apache::loncommon::end_page();
     }          my $dest = '/adm/roles';
           if ($env{'form.firsturl'} ne '') {
     if (($env{'form.domain'}) &&               $dest = $env{'form.firsturl'};
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {          }
  $domain=$env{'form.domain'};   $r->print(
     }                    $start_page
     my $role    = $r->dir_config('lonRole');                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
     my $loadlim = $r->dir_config('lonLoadLim');                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
     my $servadm = $r->dir_config('lonAdmEMail');                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     my $tabdir  = $r->dir_config('lonTabDir');                   .$end_page
     my $include = $r->dir_config('lonIncludes');                   );
     my $expire  = $r->dir_config('lonExpire');          return OK;
     my $version = $r->dir_config('lonVersion');      }
     my $host_name = &Apache::lonnet::hostname($lonhost);  
   # ---------------------------------------------------- No valid token, continue
 # --------------------------------------------- Default values for login fields  
   # ---------------------------- Not possible to really login to domain "public"
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');      if ($env{'form.domain'} eq 'public') {
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);   $env{'form.domain'}='';
    $env{'form.username'}='';
 # ---------------------------------------------------------- Determine own load      }
     my $loadavg;  
     {  # ------ Is this page requested because /adm/migrateuser detected an IP change?
  my $loadfile=Apache::File->new('/proc/loadavg');      my %sessiondata;
  $loadavg=<$loadfile>;      if ($env{'form.iptoken'}) {
     }          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
     $loadavg =~ s/\s.*//g;          unless ($sessiondata{'sessionserver'}) {
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
     my $userloadpercent=&Apache::lonnet::userload();              delete($env{'form.iptoken'});
           }
 # ------------------------------------------------------- Do the load balancing      }
     my $otherserver= &Apache::lonnet::absolute_url($host_name);  # ----------------------------------------------------------- Process Interface
     my $firsturl=      $env{'form.interface'}=~s/\W//g;
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});  
 # ---------------------------------------------------------- Are we overloaded?      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {          &Apache::loncommon::decode_user_agent();
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);  
  if ($unloaded) { $otherserver=$unloaded; }      my $iconpath=
     }   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
   
 # ----------------------------------------------------------- Get announcements      my $lonhost = $r->dir_config('lonHostID');
     my $announcements=&Apache::lonnet::getannounce();      my $domain = &Apache::lonnet::default_login_domain();
 # -------------------------------------------------------- Set login parameters      my $defdom = $domain;
       if ($lonhost ne '') {
     my @hexstr=('0','1','2','3','4','5','6','7',          unless ($sessiondata{'sessionserver'}) {
                 '8','9','a','b','c','d','e','f');              my $redirect = &check_loginvia($domain,$lonhost);
     my $lkey='';              if ($redirect) {
     for (0..7) {                  $r->print($redirect);
         $lkey.=$hexstr[rand(15)];                  return OK;
     }              }
           }
     my $ukey='';      }
     for (0..7) {  
         $ukey.=$hexstr[rand(15)];      if (($sessiondata{'domain'}) &&
     }          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
           $domain=$sessiondata{'domain'};
     my $lextkey=hex($lkey);      } elsif (($env{'form.domain'}) &&
     if ($lextkey>2147483647) { $lextkey-=4294967296; }   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
    $domain=$env{'form.domain'};
     my $uextkey=hex($ukey);      }
     if ($uextkey>2147483647) { $uextkey-=4294967296; }  
       my $role    = $r->dir_config('lonRole');
 # -------------------------------------------------------- Store away log token      my $loadlim = $r->dir_config('lonLoadLim');
     my $tokenextras;      my $uloadlim= $r->dir_config('lonUserLoadLim');
     if ($env{'form.role'}) {      my $servadm = $r->dir_config('lonAdmEMail');
         $tokenextras = '&role='.&escape($env{'form.role'});      my $tabdir  = $r->dir_config('lonTabDir');
     }      my $include = $r->dir_config('lonIncludes');
     if ($env{'form.symb'}) {      my $expire  = $r->dir_config('lonExpire');
         if (!$tokenextras) {      my $version = $r->dir_config('lonVersion');
             $tokenextras = '&';      my $host_name = &Apache::lonnet::hostname($lonhost);
         }  
         $tokenextras .= '&symb='.&escape($env{'form.symb'});  # --------------------------------------------- Default values for login fields
     }     
     my $logtoken=Apache::lonnet::reply(      my ($authusername,$authdomain);
        'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,      if ($sessiondata{'username'}) {
        $lonhost);          $authusername=$sessiondata{'username'};
       } else {
 # ------------------- If we cannot talk to ourselves, we are in serious trouble          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
           $authusername=($env{'form.username'}?$env{'form.username'}:'');
     if ($logtoken eq 'con_lost') {      }
         my $spares='';      if ($sessiondata{'domain'}) {
  my $last;          $authdomain=$sessiondata{'domain'};
         foreach my $hostid (sort      } else {
     {          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
  &Apache::lonnet::hostname($a) cmp          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
     &Apache::lonnet::hostname($b);      }
     }  
     keys(%Apache::lonnet::spareid)) {  # ---------------------------------------------------------- Determine own load
             next if ($hostid eq $lonhost);      my $loadavg;
     my $hostname = &Apache::lonnet::hostname($hostid);      {
     next if ($last eq $hostname);   my $loadfile=Apache::File->new('/proc/loadavg');
             $spares.='<br /><font size="+1"><a href="http://'.   $loadavg=<$loadfile>;
                 $hostname.      }
                 '/adm/login?domain='.$authdomain.'">'.      $loadavg =~ s/\s.*//g;
                 $hostname.'</a>'.  
                 ' '.&mt('(preferred)').'</font>'.$/;      my ($loadpercent,$userloadpercent);
     $last=$hostname;      if ($loadlim) {
         }          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
         $spares.= '<br />';      }
  my %all_hostnames = &Apache::lonnet::all_hostnames();      if ($uloadlim) {
         foreach my $hostid (sort          $userloadpercent=&Apache::lonnet::userload();
     {      }
  &Apache::lonnet::hostname($a) cmp  
     &Apache::lonnet::hostname($b);      my $firsturl=
     }      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
     keys(%all_hostnames)) {  
             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});  # ----------------------------------------------------------- Get announcements
     my $hostname = &Apache::lonnet::hostname($hostid);      my $announcements=&Apache::lonnet::getannounce();
             next if ($last eq $hostname);  # -------------------------------------------------------- Set login parameters
             $spares.='<br /><a href="http://'.  
                 $hostname.      my @hexstr=('0','1','2','3','4','5','6','7',
                 '/adm/login?domain='.$authdomain.'">'.                  '8','9','a','b','c','d','e','f');
                 $hostname.'</a>';      my $lkey='';
     $last=$hostname;      for (0..7) {
         }          $lkey.=$hexstr[rand(15)];
  $r->print(      }
            '<html>'  
           .'<head><title>'      my $ukey='';
           .&mt('The LearningOnline Network with CAPA')      for (0..7) {
           .'</title></head>'          $ukey.=$hexstr[rand(15)];
           .'<body bgcolor="#FFFFFF">'      }
           .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'  
           .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'      my $lextkey=hex($lkey);
           .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'      if ($lextkey>2147483647) { $lextkey-=4294967296; }
           .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'  
           .$spares      my $uextkey=hex($ukey);
           .'</body>'      if ($uextkey>2147483647) { $uextkey-=4294967296; }
           .'</html>'  
         );  # -------------------------------------------------------- Store away log token
         return OK;      my $tokenextras;
     }      if ($env{'form.role'}) {
           $tokenextras = '&role='.&escape($env{'form.role'});
 # ----------------------------------------------- Apparently we are in business      }
     $servadm=~s/\,/\<br \/\>/g;      if ($env{'form.symb'}) {
           if (!$tokenextras) {
 # ----------------------------------------------------------- Front page design              $tokenextras = '&';
     my $pgbg=          }
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');          $tokenextras .= '&symb='.&escape($env{'form.symb'});
     my $font=      }
       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');      if ($env{'form.iptoken'}) {
     my $link=          if (!$tokenextras) {
       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');              $tokenextras = '&&';
     my $vlink=          }
       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
     my $alink=&Apache::loncommon::designparm('login.alink',$domain);      }
     my $mainbg=      my $logtoken=Apache::lonnet::reply(
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
     my $sidebg=         $lonhost);
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');  
     my $textcol =   # -- If we cannot talk to ourselves, or hostID does not map to a hostname
       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');  #    we are in serious trouble
     my $bgcol =  
       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
     my $logo=&Apache::loncommon::designparm('login.logo',$domain);          if ($logtoken eq 'no_such_host') {
     my $img=&Apache::loncommon::designparm('login.img',$domain);              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
     my $domainlogo=&Apache::loncommon::domainlogo($domain);          }
     my $login=&Apache::loncommon::designparm('login.login',$domain);          my $spares='';
     if ($login eq '') {   my $last;
         $login = $iconpath.'/'.&mt('userauthentication.gif');          foreach my $hostid (sort
     }      {
     my $showbanner = 1;   &Apache::lonnet::hostname($a) cmp
     my $showmainlogo = 1;      &Apache::lonnet::hostname($b);
     if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {      }
         $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);      keys(%Apache::lonnet::spareid)) {
     }              next if ($hostid eq $lonhost);
     if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {      my $hostname = &Apache::lonnet::hostname($hostid);
         $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);      next if (($last eq $hostname) || ($hostname eq ''));
     }              $spares.='<br /><font size="+1"><a href="http://'.
     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);                  $hostname.
     my $showcoursecat =                  '/adm/login?domain='.$authdomain.'">'.
         &Apache::loncommon::designparm('login.coursecatalog',$domain);                  $hostname.'</a>'.
     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);                  ' '.&mt('(preferred)').'</font>'.$/;
     my $shownewuserlink =       $last=$hostname;
         &Apache::loncommon::designparm('login.newuser',$domain);          }
     my $now=time;          if ($spares) {
     my $js = (<<ENDSCRIPT);              $spares.= '<br />';
           }
  <script type="text/javascript">          my %all_hostnames = &Apache::lonnet::all_hostnames();
  // <![CDATA[          foreach my $hostid (sort
     function send()      {
     {   &Apache::lonnet::hostname($a) cmp
         this.document.server.elements.uname.value      &Apache::lonnet::hostname($b);
        =this.document.client.elements.uname.value;      }
       keys(%all_hostnames)) {
         this.document.server.elements.udom.value              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
        =this.document.client.elements.udom.value;              my $hostname = &Apache::lonnet::hostname($hostid);
               next if (($last eq $hostname) || ($hostname eq ''));
         this.document.server.elements.imagesuppress.value              $spares.='<br /><a href="http://'.
        =this.document.client.elements.imagesuppress.checked;               $hostname.
                '/adm/login?domain='.$authdomain.'">'.
         this.document.server.elements.embedsuppress.value               $hostname.'</a>';
        =this.document.client.elements.embedsuppress.checked;              $last=$hostname;
            }
         this.document.server.elements.appletsuppress.value           $r->print(
        =this.document.client.elements.appletsuppress.checked;     '<html>'
     .'<head><title>'
         this.document.server.elements.fontenhance.value    .&mt('The LearningOnline Network with CAPA')
        =this.document.client.elements.fontenhance.checked;    .'</title></head>'
     .'<body bgcolor="#FFFFFF">'
         this.document.server.elements.blackwhite.value    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
        =this.document.client.elements.blackwhite.checked;    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
     .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
         this.document.server.elements.remember.value          if ($spares) {
        =this.document.client.elements.remember.checked;              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
                        .'</p>'
         uextkey=this.document.client.elements.uextkey.value;                       .$spares);
         lextkey=this.document.client.elements.lextkey.value;          }
         initkeys();          $r->print('</body>'
                    .'</html>'
         this.document.server.elements.upass0.value          );
             =crypted(this.document.client.elements.upass$now.value.substr(0,15));          return OK;
         this.document.server.elements.upass1.value      }
             =crypted(this.document.client.elements.upass$now.value.substr(15,15));  
         this.document.server.elements.upass2.value  # ----------------------------------------------- Apparently we are in business
             =crypted(this.document.client.elements.upass$now.value.substr(30,15));      $servadm=~s/\,/\<br \/\>/g;
   
         this.document.client.elements.uname.value='';  # ----------------------------------------------------------- Front page design
         this.document.client.elements.upass$now.value='';      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
       my $font=&Apache::loncommon::designparm('login.font',$domain);
         this.document.server.submit();      my $link=&Apache::loncommon::designparm('login.link',$domain);
         return false;      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
     }      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
  // ]]>      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
  </script>      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
       my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
 ENDSCRIPT      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
       my $logo=&Apache::loncommon::designparm('login.logo',$domain);
 # --------------------------------------------------- Print login screen header      my $img=&Apache::loncommon::designparm('login.img',$domain);
       my $domainlogo=&Apache::loncommon::domainlogo($domain);
     my %add_entries = (topmargin    => "0",      my $showbanner = 1;
                        leftmargin   => "0",      my $showmainlogo = 1;
                        marginheight => "0",      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
                        marginwidth  => "0",          $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
                        bgcolor      => "$pgbg",      }
                        text         => "$font",      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
                        link         => "$link",          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
                        vlink        => "$vlink",      }
                        alink        => "$alink",);      my $showadminmail;
       my @possdoms = &Apache::lonnet::current_machine_domains();
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,      if (grep(/^\Q$domain\E$/,@possdoms)) {
                                        { 'redirect'       => [$expire,'/adm/roles'],           $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
                                          'add_entries' => \%add_entries,      }
                                          'only_body'   => 1,}));      my $showcoursecat =
           &Apache::loncommon::designparm('login.coursecatalog',$domain);
 # ----------------------------------------------------------------------- Texts      my $shownewuserlink =
           &Apache::loncommon::designparm('login.newuser',$domain);
 my %lt=&Apache::lonlocal::texthash(      my $showhelpdesk =
   'un'  => 'Username',          &Apache::loncommon::designparm('login.helpdesk',$domain);
   'pw'  => 'Password',      my $now=time;
   'dom' => 'Domain',      my $js = (<<ENDSCRIPT);
   'load' => 'Server Load',  
                   'userload' => 'User Load',  <script type="text/javascript" language="JavaScript">
                   'about'  => 'About LON-CAPA',  // <![CDATA[
                   'access' => 'Accessibility Options',  function send()
                   'catalog' => 'Course/Community Catalog',  {
   'log' => 'Log in',  this.document.server.elements.uname.value
   'help' => 'Log-in Help',  =this.document.client.elements.uname.value;
   'serv' => 'Server',  
                   'servadm' => 'Server Administration',  this.document.server.elements.udom.value
                   'helpdesk' => 'Contact Helpdesk',  =this.document.client.elements.udom.value;
                   'forgotpw' => 'Forgot password?',  
                   'newuser'  => 'New User?',  uextkey=this.document.client.elements.uextkey.value;
                   'options_headline' => 'Select Accessibility Options',  lextkey=this.document.client.elements.lextkey.value;
                   'sprs_img' => 'Suppress rendering of images',  initkeys();
                   'sprs_applet' => 'Suppress Java applets',  
                   'sprs_embed' => 'Suppress rendering of embedded multimedia',  if(this.document.server.action.substr(0,5) === 'http:'){
                   'sprs_font' => 'Increase font size',      this.document.server.elements.upass0.value
                   'sprs_blackwhite' => 'Switch to black and white mode',          =getCrypted(this.document.client.elements.upass$now.value);
                   'remember' => 'Remember these settings for next login');  } else {
 # -------------------------------------------------- Change password field name      this.document.server.elements.upass0.value
     my $forgotpw = &forgotpwdisplay(%lt);          =this.document.client.elements.upass$now.value;
     my $loginhelp = &loginhelpdisplay(%lt);  }
   
 # ---------------------------------------------------- Serve out DES JavaScript  this.document.client.elements.uname.value='';
     {  this.document.client.elements.upass$now.value='';
         my $jsh=Apache::File->new($include."/londes.js");  
         $r->print(<$jsh>);  this.document.server.submit();
     }  return false;
 # ---------------------------------------------------------- Serve rest of page  }
   
     if ($fullgraph) {  function enableInput() {
  $r->print(      this.document.client.elements.upass$now.removeAttribute("readOnly");
   '<table width="100%" cellpadding="0" cellspacing="0" border="0">');      this.document.client.elements.uname.removeAttribute("readOnly");
     }      this.document.client.elements.udom.removeAttribute("readOnly");
       return;
     $r->print(<<ENDSERVERFORM);  }
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">  
    <input type="hidden" name="logtoken" value="$logtoken" />  // ]]>
    <input type="hidden" name="serverid" value="$lonhost" />  </script>
    <input type="hidden" name="interface" value="$env{'form.interface'}" />  
    <input type="hidden" name="uname" value="" />  ENDSCRIPT
    <input type="hidden" name="upass0" value="" />  
    <input type="hidden" name="upass1" value="" />  # --------------------------------------------------- Print login screen header
    <input type="hidden" name="upass2" value="" />  
    <input type="hidden" name="udom" value="" />      my %add_entries = (
    <input type="hidden" name="imagesuppress"  value="" />         bgcolor      => "$mainbg",
    <input type="hidden" name="appletsuppress"  value="" />         text         => "$font",
    <input type="hidden" name="embedsuppress"  value="" />         link         => "$link",
    <input type="hidden" name="fontenhance"  value="" />         vlink        => "$vlink",
    <input type="hidden" name="blackwhite"  value="" />         alink        => "$alink",
    <input type="hidden" name="remember"  value="" />                 onload       => 'javascript:enableInput();',);
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />  
    <input type="hidden" name="localres" value="$env{'form.localres'}" />      my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
   </form>      @hosts = &Apache::lonnet::current_machine_ids();
 ENDSERVERFORM      $lonhost_in_use = $lonhost;
     my $coursecatalog;      if (@hosts > 1) {
     if (($showcoursecat eq '') || ($showcoursecat)) {          foreach my $hostid (@hosts) {
         $coursecatalog = &coursecatalog_link($lt{'catalog'});              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
     }                  $lonhost_in_use = $hostid;
     my $newuserlink;                  last;
     if ($shownewuserlink) {              }
         $newuserlink = &newuser_link($lt{'newuser'});          }
     }      }
     if ($fullgraph) {      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
         $r->print(<<HEADER);      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
   <!-- The LON-CAPA Header -->      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
   <tr>      if ($headextra) {
           my $omitextra;
    <!-- Row 1 Columns 2-4 -->          if ($headextra_exempt ne '') {
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg">              my @exempt = split(',',$headextra_exempt);
 HEADER              my $ip = $ENV{'REMOTE_ADDR'};
         if ($showbanner) {              if (grep(/^\Q$ip\E$/,@exempt)) {
             $r->print(<<ENDBANNER);                  $omitextra = 1;
 <img src="$img" border="0" alt="The Learning Online Network with CAPA" />              }
 ENDBANNER          }
         }          unless ($omitextra) {
         $r->print(<<ENDSTART);              my $confname = $defdom.'-domainconfig';
    </td>              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
   </tr>                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
                   unless ($extra eq '-1') {
   <!-- The gray bar that starts the two table frames -->                      $js .= "\n".$extra."\n";
   <tr>                  }
               }
    <!-- Row 2 Column 1 -->          }
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>      }
   
    <!-- Row 2 Column 2 -->      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>         { 'redirect'       => [$expire,'/adm/roles'],
    'add_entries' => \%add_entries,
    <!-- Row 2 Column 3 -->   'only_body'   => 1,}));
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>  
   # ----------------------------------------------------------------------- Texts
    <!-- Row 2 Column 4 -->  
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>      my %lt=&Apache::lonlocal::texthash(
   </tr>            'un'       => 'Username',
   <tr>            'pw'       => 'Password',
                'dom'      => 'Domain',
    <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->            'perc'     => 'percent',
    <!-- Row 3 Column 1 -->            'load'     => 'Server Load',
    <td valign="top" height="60" align="left" bgcolor="$sidebg">            'userload' => 'User Load',
     <table cellpadding="0" cellspacing="2" border="0">            'catalog'  => 'Course/Community Catalog',
      <tr>            'log'      => 'Log in',
       <td>&nbsp;</td>            'help'     => 'Log-in Help',
       <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>            'serv'     => 'Server',
      </tr>            'servadm'  => 'Server Administration',
      <tr>            'helpdesk' => 'Contact Helpdesk',
       <td>&nbsp;</td>            'forgotpw' => 'Forgot password?',
       <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>            'newuser'  => 'New User?',
      </tr>$coursecatalog         );
      <tr>  # -------------------------------------------------- Change password field name
       <td colspan="2">&nbsp;</td>  
      </tr>      my $forgotpw = &forgotpwdisplay(%lt);
     </table>      $forgotpw .= '<br />' if $forgotpw;
    </td>      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
    <!-- The shaded space between the two main columns -->      if ($loginhelp) {
    <!-- Row 3 Column 2 -->          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      }
   
    <!-- The right main column holding the large LON-CAPA logo-->  # ---------------------------------------------------- Serve out DES JavaScript
    <!-- Rows 3-4 Column 3 -->      {
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">      my $jsh=Apache::File->new($include."/londes.js");
 ENDSTART      $r->print(<$jsh>);
         if ($showmainlogo) {      }
             $r->print(<<ENDLOGO);  # ---------------------------------------------------------- Serve rest of page
     <center>  
      <img src="$logo" alt="" />      $r->print(
     </center>      '<div class="LC_Box"'
 ENDLOGO     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
         }  );
         $r->print(<<ENDTOP);  
    </td>      $r->print(<<ENDSERVERFORM);
   <form name="server" action="/adm/authenticate" method="post" target="_top">
    <!-- Row 3 Column 4 -->     <input type="hidden" name="logtoken" value="$logtoken" />
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>     <input type="hidden" name="serverid" value="$lonhost" />
   </tr>     <input type="hidden" name="uname" value="" />
   <tr>     <input type="hidden" name="upass0" value="" />
      <input type="hidden" name="udom" value="" />
    <!-- The entry form -->     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
    <!-- Row 4 Column 1 -->     <input type="hidden" name="localres" value="$env{'form.localres'}" />
    <td align="center" valign="middle" bgcolor="$sidebg">    </form>
 ENDTOP  ENDSERVERFORM
     } else {      my $coursecatalog;
         $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'      if (($showcoursecat eq '') || ($showcoursecat)) {
                  .'<h2>'.&mt('Text-based Interface Login').'</h2>'          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
                  .$announcements);      }
     }      my $newuserlink;
     $r->print('<form name="client" action="" onsubmit="return(send())">');      if ($shownewuserlink) {
     unless ($fullgraph) {          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
         $r->print(<<ENDACCESSOPTIONS);      }
 <h3>$lt{'options_headline'}</h3>      my $logintitle =
 <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />          '<h2 class="LC_hcell"'
 <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />         .' style="background:'.$loginbox_header_bgcol.';'
 <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />         .' color:'.$loginbox_header_textcol.'">'
 <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />         .$lt{'log'}
 <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />         .'</h2>';
 <br />  
 <input type="checkbox" name="remember" /> $lt{'remember'}<hr />      my $noscript_warning='<noscript><span class="LC_warning"><b>'
 ENDACCESSOPTIONS                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
     } else {                          .'</b></span></noscript>';
         $r->print(<<ENDNOOPT);      my $helpdeskscript;
 <input type="hidden" name="imagesuppress"  value="" />      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
 <input type="hidden" name="embedsuppress"  value="" />                                         $authdomain,\$helpdeskscript,
 <input type="hidden" name="appletsuppress"  value="" />                                         $showhelpdesk,\@possdoms);
 <input type="hidden" name="fontenhance"  value="" />  
 <input type="hidden" name="blackwhite"  value="" />      my $mobileargs;
 <input type="hidden" name="remember"  value="" />      if ($clientmobile) {
 ENDNOOPT          $mobileargs = 'autocapitalize="off" autocorrect="off"';
     }      }
     my $logintitle;      my $loginform=(<<LFORM);
     if ($loginheader eq 'text') {  <form name="client" action="" onsubmit="return(send())">
         $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';    <input type="hidden" name="lextkey" value="$lextkey" />
     } else {    <input type="hidden" name="uextkey" value="$uextkey" />
         $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.    <b><label for="uname">$lt{'un'}</label>:</b><br />
                       &mt('User Authentication').'" /></td>';    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
     }    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
     my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
                         .'<noscript><div class="LC_warning"><font size="-1">'    <b><label for="udom">$lt{'dom'}</label>:</b><br />
                         .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
                         .'</font></div></noscript></td>';    <input type="submit" value="$lt{'log'}" />
     $r->print(<<ENDLOGIN);  </form>
      <input type="hidden" name="lextkey" value="$lextkey" />  LFORM
      <input type="hidden" name="uextkey" value="$uextkey" />  
       if ($showbanner) {
      <!-- Start the sub-table for text and input alignment -->          $r->print(<<HEADER);
      <table border="0" cellspacing="0" cellpadding="0">  <!-- The LON-CAPA Header -->
       <tr>$logintitle</tr>  <div style="background:$pgbg;margin:0;width:100%;">
       <tr>$noscript_warning</tr>    <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
       <tr>  </div>
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>  HEADER
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>      }
       </tr>      $r->print(<<ENDTOP);
       <tr>  <div style="float:left;margin-top:0;">
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="upass$now">$lt{'pw'}</label>:</b></font></td>  <div class="LC_Box" style="background:$loginbox_bg;">
        <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>    $logintitle
       </tr>    $loginform
       <tr>    $noscript_warning
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="udom">$lt{'dom'}</label>:</b></font></td>  </div>
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>   
       </tr>  <div class="LC_Box" style="padding-top: 10px;">
       <tr>    $loginhelp
        <td bgcolor="$mainbg">&nbsp;</td>    $forgotpw
        <td bgcolor="$mainbg" valign="bottom" align="center">    $contactblock
         <br />    $newuserlink
         <input type="submit" value="$lt{'log'}" />    $coursecatalog
        </td>  </div>
       </tr>  </div>
       <tr>  
        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">  <div>
         $loginhelp  ENDTOP
         $forgotpw      if ($showmainlogo) {
         $newuserlink          $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
         <br />      }
        </td>  $r->print(<<ENDTOP);
       </tr>  $announcements
      </table>  </div>
      <!-- End sub-table -->  <hr style="clear:both;" />
     </form>  ENDTOP
 ENDLOGIN      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
     if ($fullgraph) {      $domainrow = <<"END";
         my $helpdeskscript;        <tr>
         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,         <td  align="left" valign="top">
                                   $version,$authdomain,\$helpdeskscript);          <small><b>$lt{'dom'}:&nbsp;</b></small>
  $r->print(<<ENDDOCUMENT);         </td>
    </td>         <td  align="left" valign="top">
           <small><tt>&nbsp;$domain</tt></small>
    <!-- Row 4 Column 2 -->         </td>
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>        </tr>
   END
    <!-- Row 4 Column 3 -->      $serverrow = <<"END";
 <td bgcolor="$mainbg">$announcements</td>        <tr>
          <td  align="left" valign="top">
    <!-- Row 4 Column 4 -->          <small><b>$lt{'serv'}:&nbsp;</b></small>
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>         </td>
   </tr>         <td align="left" valign="top">
   <tr>          <small><tt>&nbsp;$lonhost ($role)</tt></small>
          </td>
    <!-- Row 5 Column 1 -->        </tr>
    <td bgcolor="$sidebg" valign="middle" align="left">  END
      <br />      if ($loadlim) {
      <table border="0" cellspacing="0" cellpadding="0">          $loadrow = <<"END";
       <tr>        <tr>
        <td bgcolor="$sidebg" align="left" valign="top">         <td align="left" valign="top">
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>          <small><b>$lt{'load'}:&nbsp;</b></small>
        </td>         </td>
        <td bgcolor="$sidebg" align="left" valign="middle">         <td align="left" valign="top">
         <small><tt>&nbsp;$domain</tt></small>          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
        </td>         </td>
       </tr>        </tr>
       <tr>  END
        <td bgcolor="$sidebg" align="left" valign="top">      }
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>      if ($uloadlim) {
        </td>          $userloadrow = <<"END";
        <td bgcolor="$sidebg" align="left" valign="middle">        <tr>
         <small><tt>&nbsp;$lonhost ($role)</tt></small>         <td align="left" valign="top">
        </td>          <small><b>$lt{'userload'}:&nbsp;</b></small>
       </tr>         </td>
       <tr>         <td align="left" valign="top">
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small></span>         </td>
        </td>        </tr>
        <td bgcolor="$sidebg" align="left" valign="middle">  END
         <small><tt>&nbsp;$loadpercent%</tt></small>      }
        </td>      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
       </tr>          $versionrow = <<"END";
       <tr>        <tr>
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">         <td colspan="2" align="left">
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small></span>          <small>$version</small>
        </td>         </td>
        <td bgcolor="$sidebg" align="left" valign="middle">        </tr>
         <small><tt>&nbsp;$userloadpercent%</tt></small>  END
        </td>      }
       </tr>  
      </table>      $r->print(<<ENDDOCUMENT);
      <br />      <div style="float: left;">
     $contactblock       <table border="0" cellspacing="0" cellpadding="0">
    </td>  $domainrow
   $serverrow
    <!-- Row 5 Column 2 -->  $loadrow    
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  $userloadrow
   $versionrow
    <!-- Row 5 Column 3 -->       </table>
    <td width="100%" valign="bottom" bgcolor="$mainbg">      </div>
 $domainlogo      <div style="float: right;">
 </td>      $domainlogo
       </div>
    <!-- Row 5 Column 4 -->      <br style="clear:both;" />
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>   </div>
   </tr>  
   <tr>  <script type="text/javascript">
   // <![CDATA[
    <!-- Row 6 Column 1 -->  // the if prevents the script error if the browser can not handle this
    <td bgcolor="$sidebg">&nbsp;</td>  if ( document.client.uname ) { document.client.uname.focus(); }
   // ]]>
    <!-- Row 6 Column 2 -->  </script>
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>  $helpdeskscript
   
    <!-- Row 6 Column 3 -->  ENDDOCUMENT
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>      my %endargs = ( 'noredirectlink' => 1, );
       $r->print(&Apache::loncommon::end_page(\%endargs));
    <!-- Row 6 Column 4 -->      return OK;
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>  }
   </tr>  
  </table>  sub check_loginvia {
       my ($domain,$lonhost) = @_;
 <script type="text/javascript">      if ($domain eq '' || $lonhost eq '') {
 // <![CDATA[          return;
 // the if prevents the script error if the browser can not handle this      }
 if ( document.client.uname ) { document.client.uname.focus(); }      my %domconfhash = &Apache::loncommon::get_domainconf($domain);
 // ]]>      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
 </script>      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
 $helpdeskscript      my $output;
       if ($loginvia ne '') {
 ENDDOCUMENT          my $noredirect;
 }          my $ip = $ENV{'REMOTE_ADDR'};
     my %endargs = ( 'noredirectlink' => 1, );          if ($ip eq '127.0.0.1') {
     $r->print(&Apache::loncommon::end_page(\%endargs));              $noredirect = 1;
     return OK;          } else {
 }              if ($loginvia_exempt ne '') {
                   my @exempt = split(',',$loginvia_exempt);
 sub check_loginvia {                  if (grep(/^\Q$ip\E$/,@exempt)) {
     my ($domain,$lonhost) = @_;                      $noredirect = 1;
     if ($domain eq '' || $lonhost eq '') {                  }
         return;              }
     }          }
     my %domconfhash = &Apache::loncommon::get_domainconf($domain);          unless ($noredirect) {
     my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};              my ($newhost,$path);
     my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};              if ($loginvia =~ /:/) {
     my $output;                  ($newhost,$path) = split(':',$loginvia);
     if ($loginvia ne '') {              } else {
         my $noredirect;                  $newhost = $loginvia;
         my $ip = $ENV{'REMOTE_ADDR'};              }
         if ($ip eq '127.0.0.1') {              if ($newhost ne $lonhost) {
             $noredirect = 1;                  if (&Apache::lonnet::hostname($newhost) ne '') {
         } else {                      $output = &redirect_page($newhost,$path);
             if ($loginvia_exempt ne '') {                  }
                 my @exempt = split(',',$loginvia_exempt);              }
                 if (grep(/^\Q$ip\E$/,@exempt)) {          }
                     $noredirect = 1;      }
                 }      return $output;
             }  }
         }  
         unless ($noredirect) {  sub redirect_page {
             my ($newhost,$path);      my ($desthost,$path) = @_;
             if ($loginvia =~ /:/) {      my $protocol = $Apache::lonnet::protocol{$desthost};
                 ($newhost,$path) = split(':',$loginvia);      $protocol = 'http' if ($protocol ne 'https');
             } else {      unless ($path =~ m{^/}) {
                 $newhost = $loginvia;          $path = '/'.$path;
             }      }
             if ($newhost ne $lonhost) {      my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
                 if (&Apache::lonnet::hostname($newhost) ne '') {      if ($env{'form.firsturl'} ne '') {
                     $output = &redirect_page($newhost,$path);          $url .='?firsturl='.$env{'form.firsturl'};
                 }      }
             }      my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
         }                                                      {'redirect' => [0,$url],});
     }      my $end_page   = &Apache::loncommon::end_page();
     return $output;      return $start_page.$end_page;
 }  }
   
 sub redirect_page {  sub contactdisplay {
     my ($desthost,$path) = @_;      my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
     my $protocol = $Apache::lonnet::protocol{$desthost};          $possdoms) = @_;
     $protocol = 'http' if ($protocol ne 'https');      my $contactblock;
     unless ($path =~ m{^/}) {      my $origmail;
         $path = '/'.$path;      if (ref($possdoms) eq 'ARRAY') {
     }          if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
     my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;              $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
     if ($env{'form.firsturl'} ne '') {          }
         $url .='?firsturl='.$env{'form.firsturl'};      }
     }      my $requestmail =
     my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,          &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                     {'redirect' => [0,$url],});                                                   $authdomain,$origmail);
     my $end_page   = &Apache::loncommon::end_page();      unless ($showhelpdesk eq '0') {
     return $start_page.$end_page;          if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
 }              $showhelpdesk = 1;
           } else {
 sub contactdisplay {              $showhelpdesk = 0;
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;          }
     my $contactblock;      }
     my $showhelpdesk = 0;      if ($servadm && $showadminmail) {
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};          $contactblock .= $$lt{'servadm'}.':<br />'.
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {                           '<tt>'.$servadm.'</tt><br />';
         $showhelpdesk = 1;      }
     }      if ($showhelpdesk) {
     if ($servadm && $showadminmail) {          $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.          my $thisurl = &escape('/adm/login');
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';          $$helpdeskscript = <<"ENDSCRIPT";
     }  <script type="text/javascript">
     if ($showhelpdesk) {  // <![CDATA[
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';  function helpdesk() {
         my $thisurl = &escape('/adm/login');      var possdom = document.client.udom.value;
         $$helpdeskscript = <<"ENDSCRIPT";      var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
 <script type="text/javascript">      if (codedom == '') {
 // <![CDATA[          codedom = "$authdomain";
 function helpdesk() {      }
     var codedom = document.client.udom.value;      var querystr = "origurl=$thisurl&codedom="+codedom;
     if (codedom == '') {      document.location.href = "/adm/helpdesk?"+querystr;
         codedom = "$authdomain";      return;
     }  }
     var querystr = "origurl=$thisurl&codedom="+codedom;  // ]]>
     document.location.href = "/adm/helpdesk?"+querystr;  </script>
     return;  ENDSCRIPT
 }      }
 // ]]>      return $contactblock;
 </script>  }
 ENDSCRIPT  
     }  sub forgotpwdisplay {
     $contactblock .= <<"ENDBLOCK";      my (%lt) = @_;
      &nbsp;&nbsp;&nbsp;$version      my $prompt_for_resetpw = 1;
 ENDBLOCK      if ($prompt_for_resetpw) {
     return $contactblock;          return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
 }      }
       return;
 sub forgotpwdisplay {  }
     my (%lt) = @_;  
     my $prompt_for_resetpw = 1;   sub coursecatalog_link {
     if ($prompt_for_resetpw) {      my ($linkname) = @_;
         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br />';      return <<"END";
     }        <a href="/adm/coursecatalog">$linkname</a>
     return;  END
 }  }
   
 sub loginhelpdisplay {  sub newuser_link {
     my (%lt) = @_;      my ($linkname) = @_;
     my $login_help = 1;      return '<a href="/adm/createaccount">'.$linkname.'</a>';
     if ($login_help) {  }
         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';  
     }  1;
     return;  __END__
 }  
   
 sub coursecatalog_link {  
     my ($linkname) = @_;  
     return <<"END";  
      <tr>  
       <td>&nbsp;</td>  
       <td><span class="LC_nobreak"><a href="/adm/coursecatalog"><b>$linkname</b></a></span></td>  
      </tr>  
 END  
 }  
   
 sub newuser_link {  
     my ($linkname) = @_;  
     return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';  
 }  
   
 1;  
 __END__  
Removed from v.1.106.4.8  
changed lines
  Added in v.1.172

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