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Diff for /loncom/auth/lonlogin.pm between versions 1.106.4.8 and 1.169

version 1.106.4.8, 2010/03/31 23:18:27 version 1.169, 2017/02/17 18:37:05
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # Login Screen  # Login Screen
 #  #
 # $Id$  # $Id$
 #  #
 # Copyright Michigan State University Board of Trustees  # Copyright Michigan State University Board of Trustees
 #  #
 # This file is part of the LearningOnline Network with CAPA (LON-CAPA).  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #  #
 # LON-CAPA is free software; you can redistribute it and/or modify  # LON-CAPA is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by  # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or  # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.  # (at your option) any later version.
 #  #
 # LON-CAPA is distributed in the hope that it will be useful,  # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of  # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
 # You should have received a copy of the GNU General Public License  # You should have received a copy of the GNU General Public License
 # along with LON-CAPA; if not, write to the Free Software  # along with LON-CAPA; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #  #
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
 package Apache::lonlogin;  package Apache::lonlogin;
   
 use strict;  use strict;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File ();  use Apache::File ();
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonauth();  use Apache::lonauth();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::migrateuser();  use Apache::migrateuser();
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA;  use LONCAPA;
    use CGI::Cookie();
 sub handler {   
     my $r = shift;  sub handler {
       my $r = shift;
     &Apache::loncommon::get_unprocessed_cgi  
  (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},      &Apache::loncommon::get_unprocessed_cgi
       $ENV{'REDIRECT_QUERY_STRING'}),   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
  ['interface','username','domain','firsturl','localpath','localres',        $ENV{'REDIRECT_QUERY_STRING'}),
   'token','role','symb']);   ['interface','username','domain','firsturl','localpath','localres',
     if (!defined($env{'form.firsturl'})) {    'token','role','symb','iptoken']);
         &Apache::lonacc::get_posted_cgi($r,['firsturl']);      if (!defined($env{'form.firsturl'})) {
     }          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
       }
 # -- check if they are a migrating user  
     if (defined($env{'form.token'})) {  # -- check if they are a migrating user
  return &Apache::migrateuser::handler($r);      if (defined($env{'form.token'})) {
     }   return &Apache::migrateuser::handler($r);
       }
     &Apache::loncommon::no_cache($r);  
     &Apache::lonlocal::get_language_handle($r);  # For "public user" - remove any exising "public" cookie, as user really wants to log-in
     &Apache::loncommon::content_type($r,'text/html');      my ($handle,$lonidsdir,$expire);
     $r->send_http_header;      unless ($r->header_only) {
     return OK if $r->header_only;          $handle = &Apache::lonnet::check_for_valid_session($r);
           if ($handle ne '') {
               $lonidsdir=$r->dir_config('lonIDsDir');
 # Are we re-routing?              if ($handle=~/^publicuser\_/) {
     if (-e '/home/httpd/html/lon-status/reroute.txt') {                  unlink($r->dir_config('lonIDsDir')."/$handle.id");
  &Apache::lonauth::reroute($r);                  undef($handle);
  return OK;                  $expire = 1;
     }              }
           }
       }
 # -------------------------------- Prevent users from attempting to login twice  
     my $handle = &Apache::lonnet::check_for_valid_session($r);      &Apache::loncommon::no_cache($r);
     if ($handle=~/^publicuser\_/) {      &Apache::lonlocal::get_language_handle($r);
 # For "public user" - remove it, we apparently really want to login      &Apache::loncommon::content_type($r,'text/html');
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      if ($expire) {
     } elsif ($handle ne '') {          my $c = new CGI::Cookie(-name    => 'lonPublic',
 # Indeed, a valid token is found                                  -value   => '',
  my $start_page =                                   -expires => '-10y',);
     &Apache::loncommon::start_page('Already logged in');          $r->header_out('Set-cookie' => $c);
  my $end_page =       }
     &Apache::loncommon::end_page();      $r->send_http_header;
         my $dest = '/adm/roles';      return OK if $r->header_only;
         if ($env{'form.firsturl'} ne '') {  
             $dest = $env{'form.firsturl'};  
         }  # Are we re-routing?
  $r->print(      my $londocroot = $r->dir_config('lonDocRoot');
                   $start_page      if (-e "$londocroot/lon-status/reroute.txt") {
                  .'<h1>'.&mt('You are already logged in!').'</h1>'   &Apache::lonauth::reroute($r);
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',   return OK;
                   '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'      }
                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'  
                  .$end_page      $env{'form.firsturl'} =~ s/(`)/'/g;
                  );  
         return OK;  # -------------------------------- Prevent users from attempting to login twice
     }      if ($handle ne '') {
           &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
 # ---------------------------------------------------- No valid token, continue   my $start_page =
       &Apache::loncommon::start_page('Already logged in');
  # ---------------------------- Not possible to really login to domain "public"   my $end_page =
     if ($env{'form.domain'} eq 'public') {      &Apache::loncommon::end_page();
  $env{'form.domain'}='';          my $dest = '/adm/roles';
  $env{'form.username'}='';          if ($env{'form.firsturl'} ne '') {
     }              $dest = $env{'form.firsturl'};
 # ----------------------------------------------------------- Process Interface          }
     $env{'form.interface'}=~s/\W//g;   $r->print(
                     $start_page
     my $textbrowsers=$r->dir_config('lonTextBrowsers');                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
                         '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     foreach (split(/\:/,$textbrowsers)) {                   .$end_page
  if ($httpbrowser=~/$_/i) {                   );
     $env{'form.interface'}='textual';          return OK;
         }      }
     }  
   # ---------------------------------------------------- No valid token, continue
     my $fullgraph=($env{'form.interface'} ne 'textual');  
   # ---------------------------- Not possible to really login to domain "public"
     my $iconpath=       if ($env{'form.domain'} eq 'public') {
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));   $env{'form.domain'}='';
    $env{'form.username'}='';
     my $lonhost = $r->dir_config('lonHostID');      }
     my $domain = &Apache::lonnet::default_login_domain();  
     if ($lonhost ne '') {  # ------ Is this page requested because /adm/migrateuser detected an IP change?
         my $redirect = &check_loginvia($domain,$lonhost);      my %sessiondata;
         if ($redirect) {      if ($env{'form.iptoken'}) {
             $r->print($redirect);          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
             return OK;          unless ($sessiondata{'sessionserver'}) {
         }              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
     }              delete($env{'form.iptoken'});
           }
     if (($env{'form.domain'}) &&       }
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {  # ----------------------------------------------------------- Process Interface
  $domain=$env{'form.domain'};      $env{'form.interface'}=~s/\W//g;
     }  
     my $role    = $r->dir_config('lonRole');      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     my $loadlim = $r->dir_config('lonLoadLim');          &Apache::loncommon::decode_user_agent();
     my $servadm = $r->dir_config('lonAdmEMail');  
     my $tabdir  = $r->dir_config('lonTabDir');      my $iconpath=
     my $include = $r->dir_config('lonIncludes');   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
     my $expire  = $r->dir_config('lonExpire');  
     my $version = $r->dir_config('lonVersion');      my $lonhost = $r->dir_config('lonHostID');
     my $host_name = &Apache::lonnet::hostname($lonhost);      my $domain = &Apache::lonnet::default_login_domain();
       my $defdom = $domain;
 # --------------------------------------------- Default values for login fields      if ($lonhost ne '') {
           unless ($sessiondata{'sessionserver'}) {
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');              my $redirect = &check_loginvia($domain,$lonhost);
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);              if ($redirect) {
                   $r->print($redirect);
 # ---------------------------------------------------------- Determine own load                  return OK;
     my $loadavg;              }
     {          }
  my $loadfile=Apache::File->new('/proc/loadavg');      }
  $loadavg=<$loadfile>;  
     }      if (($sessiondata{'domain'}) &&
     $loadavg =~ s/\s.*//g;          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);          $domain=$sessiondata{'domain'};
     my $userloadpercent=&Apache::lonnet::userload();      } elsif (($env{'form.domain'}) &&
    (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
 # ------------------------------------------------------- Do the load balancing   $domain=$env{'form.domain'};
     my $otherserver= &Apache::lonnet::absolute_url($host_name);      }
     my $firsturl=  
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});      my $role    = $r->dir_config('lonRole');
 # ---------------------------------------------------------- Are we overloaded?      my $loadlim = $r->dir_config('lonLoadLim');
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {      my $uloadlim= $r->dir_config('lonUserLoadLim');
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);      my $servadm = $r->dir_config('lonAdmEMail');
  if ($unloaded) { $otherserver=$unloaded; }      my $tabdir  = $r->dir_config('lonTabDir');
     }      my $include = $r->dir_config('lonIncludes');
       my $expire  = $r->dir_config('lonExpire');
 # ----------------------------------------------------------- Get announcements      my $version = $r->dir_config('lonVersion');
     my $announcements=&Apache::lonnet::getannounce();      my $host_name = &Apache::lonnet::hostname($lonhost);
 # -------------------------------------------------------- Set login parameters  
   # --------------------------------------------- Default values for login fields
     my @hexstr=('0','1','2','3','4','5','6','7',     
                 '8','9','a','b','c','d','e','f');      my ($authusername,$authdomain);
     my $lkey='';      if ($sessiondata{'username'}) {
     for (0..7) {          $authusername=$sessiondata{'username'};
         $lkey.=$hexstr[rand(15)];      } else {
     }          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
           $authusername=($env{'form.username'}?$env{'form.username'}:'');
     my $ukey='';      }
     for (0..7) {      if ($sessiondata{'domain'}) {
         $ukey.=$hexstr[rand(15)];          $authdomain=$sessiondata{'domain'};
     }      } else {
           $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
     my $lextkey=hex($lkey);          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
     if ($lextkey>2147483647) { $lextkey-=4294967296; }      }
   
     my $uextkey=hex($ukey);  # ---------------------------------------------------------- Determine own load
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      my $loadavg;
       {
 # -------------------------------------------------------- Store away log token   my $loadfile=Apache::File->new('/proc/loadavg');
     my $tokenextras;   $loadavg=<$loadfile>;
     if ($env{'form.role'}) {      }
         $tokenextras = '&role='.&escape($env{'form.role'});      $loadavg =~ s/\s.*//g;
     }  
     if ($env{'form.symb'}) {      my ($loadpercent,$userloadpercent);
         if (!$tokenextras) {      if ($loadlim) {
             $tokenextras = '&';          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
         }      }
         $tokenextras .= '&symb='.&escape($env{'form.symb'});      if ($uloadlim) {
     }          $userloadpercent=&Apache::lonnet::userload();
     my $logtoken=Apache::lonnet::reply(      }
        'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,  
        $lonhost);      my $firsturl=
       ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
 # ------------------- If we cannot talk to ourselves, we are in serious trouble  
   # ----------------------------------------------------------- Get announcements
     if ($logtoken eq 'con_lost') {      my $announcements=&Apache::lonnet::getannounce();
         my $spares='';  # -------------------------------------------------------- Set login parameters
  my $last;  
         foreach my $hostid (sort      my @hexstr=('0','1','2','3','4','5','6','7',
     {                  '8','9','a','b','c','d','e','f');
  &Apache::lonnet::hostname($a) cmp      my $lkey='';
     &Apache::lonnet::hostname($b);      for (0..7) {
     }          $lkey.=$hexstr[rand(15)];
     keys(%Apache::lonnet::spareid)) {      }
             next if ($hostid eq $lonhost);  
     my $hostname = &Apache::lonnet::hostname($hostid);      my $ukey='';
     next if ($last eq $hostname);      for (0..7) {
             $spares.='<br /><font size="+1"><a href="http://'.          $ukey.=$hexstr[rand(15)];
                 $hostname.      }
                 '/adm/login?domain='.$authdomain.'">'.  
                 $hostname.'</a>'.      my $lextkey=hex($lkey);
                 ' '.&mt('(preferred)').'</font>'.$/;      if ($lextkey>2147483647) { $lextkey-=4294967296; }
     $last=$hostname;  
         }      my $uextkey=hex($ukey);
         $spares.= '<br />';      if ($uextkey>2147483647) { $uextkey-=4294967296; }
  my %all_hostnames = &Apache::lonnet::all_hostnames();  
         foreach my $hostid (sort  # -------------------------------------------------------- Store away log token
     {      my $tokenextras;
  &Apache::lonnet::hostname($a) cmp      if ($env{'form.role'}) {
     &Apache::lonnet::hostname($b);          $tokenextras = '&role='.&escape($env{'form.role'});
     }      }
     keys(%all_hostnames)) {      if ($env{'form.symb'}) {
             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});          if (!$tokenextras) {
     my $hostname = &Apache::lonnet::hostname($hostid);              $tokenextras = '&';
             next if ($last eq $hostname);          }
             $spares.='<br /><a href="http://'.          $tokenextras .= '&symb='.&escape($env{'form.symb'});
                 $hostname.      }
                 '/adm/login?domain='.$authdomain.'">'.      if ($env{'form.iptoken'}) {
                 $hostname.'</a>';          if (!$tokenextras) {
     $last=$hostname;              $tokenextras = '&&';
         }          }
  $r->print(          $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
            '<html>'      }
           .'<head><title>'      my $logtoken=Apache::lonnet::reply(
           .&mt('The LearningOnline Network with CAPA')         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
           .'</title></head>'         $lonhost);
           .'<body bgcolor="#FFFFFF">'  
           .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
           .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'  #    we are in serious trouble
           .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'  
           .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
           .$spares          if ($logtoken eq 'no_such_host') {
           .'</body>'              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
           .'</html>'          }
         );          my $spares='';
         return OK;   my $last;
     }          foreach my $hostid (sort
       {
 # ----------------------------------------------- Apparently we are in business   &Apache::lonnet::hostname($a) cmp
     $servadm=~s/\,/\<br \/\>/g;      &Apache::lonnet::hostname($b);
       }
 # ----------------------------------------------------------- Front page design      keys(%Apache::lonnet::spareid)) {
     my $pgbg=              next if ($hostid eq $lonhost);
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');      my $hostname = &Apache::lonnet::hostname($hostid);
     my $font=      next if (($last eq $hostname) || ($hostname eq ''));
       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');              $spares.='<br /><font size="+1"><a href="http://'.
     my $link=                  $hostname.
       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');                  '/adm/login?domain='.$authdomain.'">'.
     my $vlink=                  $hostname.'</a>'.
       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');                  ' '.&mt('(preferred)').'</font>'.$/;
     my $alink=&Apache::loncommon::designparm('login.alink',$domain);      $last=$hostname;
     my $mainbg=          }
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');          if ($spares) {
     my $sidebg=              $spares.= '<br />';
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');          }
     my $textcol =           my %all_hostnames = &Apache::lonnet::all_hostnames();
       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');          foreach my $hostid (sort
     my $bgcol =      {
       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');   &Apache::lonnet::hostname($a) cmp
     my $logo=&Apache::loncommon::designparm('login.logo',$domain);      &Apache::lonnet::hostname($b);
     my $img=&Apache::loncommon::designparm('login.img',$domain);      }
     my $domainlogo=&Apache::loncommon::domainlogo($domain);      keys(%all_hostnames)) {
     my $login=&Apache::loncommon::designparm('login.login',$domain);              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
     if ($login eq '') {              my $hostname = &Apache::lonnet::hostname($hostid);
         $login = $iconpath.'/'.&mt('userauthentication.gif');              next if (($last eq $hostname) || ($hostname eq ''));
     }              $spares.='<br /><a href="http://'.
     my $showbanner = 1;               $hostname.
     my $showmainlogo = 1;               '/adm/login?domain='.$authdomain.'">'.
     if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {               $hostname.'</a>';
         $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);              $last=$hostname;
     }           }
     if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {           $r->print(
         $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);     '<html>'
     }    .'<head><title>'
     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);    .&mt('The LearningOnline Network with CAPA')
     my $showcoursecat =    .'</title></head>'
         &Apache::loncommon::designparm('login.coursecatalog',$domain);    .'<body bgcolor="#FFFFFF">'
     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
     my $shownewuserlink =     .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
         &Apache::loncommon::designparm('login.newuser',$domain);    .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
     my $now=time;          if ($spares) {
     my $js = (<<ENDSCRIPT);              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
                        .'</p>'
  <script type="text/javascript">                       .$spares);
  // <![CDATA[          }
     function send()          $r->print('</body>'
     {                   .'</html>'
         this.document.server.elements.uname.value          );
        =this.document.client.elements.uname.value;          return OK;
       }
         this.document.server.elements.udom.value  
        =this.document.client.elements.udom.value;  # ----------------------------------------------- Apparently we are in business
       $servadm=~s/\,/\<br \/\>/g;
         this.document.server.elements.imagesuppress.value  
        =this.document.client.elements.imagesuppress.checked;  # ----------------------------------------------------------- Front page design
       my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
         this.document.server.elements.embedsuppress.value      my $font=&Apache::loncommon::designparm('login.font',$domain);
        =this.document.client.elements.embedsuppress.checked;      my $link=&Apache::loncommon::designparm('login.link',$domain);
       my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
         this.document.server.elements.appletsuppress.value      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
        =this.document.client.elements.appletsuppress.checked;      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
       my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
         this.document.server.elements.fontenhance.value      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
        =this.document.client.elements.fontenhance.checked;      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
       my $logo=&Apache::loncommon::designparm('login.logo',$domain);
         this.document.server.elements.blackwhite.value      my $img=&Apache::loncommon::designparm('login.img',$domain);
        =this.document.client.elements.blackwhite.checked;      my $domainlogo=&Apache::loncommon::domainlogo($domain);
       my $showbanner = 1;
         this.document.server.elements.remember.value      my $showmainlogo = 1;
        =this.document.client.elements.remember.checked;      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
           $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
         uextkey=this.document.client.elements.uextkey.value;      }
         lextkey=this.document.client.elements.lextkey.value;      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
         initkeys();          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
       }
         this.document.server.elements.upass0.value      my $showadminmail;
             =crypted(this.document.client.elements.upass$now.value.substr(0,15));      my @possdoms = &Apache::lonnet::current_machine_domains();
         this.document.server.elements.upass1.value      if (grep(/^\Q$domain\E$/,@possdoms)) {
             =crypted(this.document.client.elements.upass$now.value.substr(15,15));          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
         this.document.server.elements.upass2.value      }
             =crypted(this.document.client.elements.upass$now.value.substr(30,15));      my $showcoursecat =
           &Apache::loncommon::designparm('login.coursecatalog',$domain);
         this.document.client.elements.uname.value='';      my $shownewuserlink =
         this.document.client.elements.upass$now.value='';          &Apache::loncommon::designparm('login.newuser',$domain);
       my $showhelpdesk =
         this.document.server.submit();          &Apache::loncommon::designparm('login.helpdesk',$domain);
         return false;      my $now=time;
     }      my $js = (<<ENDSCRIPT);
  // ]]>  
  </script>  <script type="text/javascript" language="JavaScript">
   // <![CDATA[
 ENDSCRIPT  function send()
   {
 # --------------------------------------------------- Print login screen header  this.document.server.elements.uname.value
   =this.document.client.elements.uname.value;
     my %add_entries = (topmargin    => "0",  
                        leftmargin   => "0",  this.document.server.elements.udom.value
                        marginheight => "0",  =this.document.client.elements.udom.value;
                        marginwidth  => "0",  
                        bgcolor      => "$pgbg",  uextkey=this.document.client.elements.uextkey.value;
                        text         => "$font",  lextkey=this.document.client.elements.lextkey.value;
                        link         => "$link",  initkeys();
                        vlink        => "$vlink",  
                        alink        => "$alink",);  if(this.document.server.action.substr(0,5) === 'http:'){
       this.document.server.elements.upass0.value
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,          =getCrypted(this.document.client.elements.upass$now.value);
                                        { 'redirect'       => [$expire,'/adm/roles'],   } else {
                                          'add_entries' => \%add_entries,      this.document.server.elements.upass0.value
                                          'only_body'   => 1,}));          =this.document.client.elements.upass$now.value;
   }
 # ----------------------------------------------------------------------- Texts  
   this.document.client.elements.uname.value='';
 my %lt=&Apache::lonlocal::texthash(  this.document.client.elements.upass$now.value='';
   'un'  => 'Username',  
   'pw'  => 'Password',  this.document.server.submit();
   'dom' => 'Domain',  return false;
   'load' => 'Server Load',  }
                   'userload' => 'User Load',  
                   'about'  => 'About LON-CAPA',  function enableInput() {
                   'access' => 'Accessibility Options',      this.document.client.elements.upass$now.removeAttribute("readOnly");
                   'catalog' => 'Course/Community Catalog',      this.document.client.elements.uname.removeAttribute("readOnly");
   'log' => 'Log in',      this.document.client.elements.udom.removeAttribute("readOnly");
   'help' => 'Log-in Help',      return;
   'serv' => 'Server',  }
                   'servadm' => 'Server Administration',  
                   'helpdesk' => 'Contact Helpdesk',  // ]]>
                   'forgotpw' => 'Forgot password?',  </script>
                   'newuser'  => 'New User?',  
                   'options_headline' => 'Select Accessibility Options',  ENDSCRIPT
                   'sprs_img' => 'Suppress rendering of images',  
                   'sprs_applet' => 'Suppress Java applets',  # --------------------------------------------------- Print login screen header
                   'sprs_embed' => 'Suppress rendering of embedded multimedia',  
                   'sprs_font' => 'Increase font size',      my %add_entries = (
                   'sprs_blackwhite' => 'Switch to black and white mode',         bgcolor      => "$mainbg",
                   'remember' => 'Remember these settings for next login');         text         => "$font",
 # -------------------------------------------------- Change password field name         link         => "$link",
     my $forgotpw = &forgotpwdisplay(%lt);         vlink        => "$vlink",
     my $loginhelp = &loginhelpdisplay(%lt);         alink        => "$alink",
                  onload       => 'javascript:enableInput();',);
 # ---------------------------------------------------- Serve out DES JavaScript  
     {      my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
         my $jsh=Apache::File->new($include."/londes.js");      @hosts = &Apache::lonnet::current_machine_ids();
         $r->print(<$jsh>);      $lonhost_in_use = $lonhost;
     }      if (@hosts > 1) {
 # ---------------------------------------------------------- Serve rest of page          foreach my $hostid (@hosts) {
               if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
     if ($fullgraph) {                  $lonhost_in_use = $hostid;
  $r->print(                  last;
   '<table width="100%" cellpadding="0" cellspacing="0" border="0">');              }
     }          }
       }
     $r->print(<<ENDSERVERFORM);      %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">      $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
    <input type="hidden" name="logtoken" value="$logtoken" />      $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
    <input type="hidden" name="serverid" value="$lonhost" />      if ($headextra) {
    <input type="hidden" name="interface" value="$env{'form.interface'}" />          my $omitextra;
    <input type="hidden" name="uname" value="" />          if ($headextra_exempt ne '') {
    <input type="hidden" name="upass0" value="" />              my @exempt = split(',',$headextra_exempt);
    <input type="hidden" name="upass1" value="" />              my $ip = $ENV{'REMOTE_ADDR'};
    <input type="hidden" name="upass2" value="" />              if (grep(/^\Q$ip\E$/,@exempt)) {
    <input type="hidden" name="udom" value="" />                  $omitextra = 1;
    <input type="hidden" name="imagesuppress"  value="" />              }
    <input type="hidden" name="appletsuppress"  value="" />          }
    <input type="hidden" name="embedsuppress"  value="" />          unless ($omitextra) {
    <input type="hidden" name="fontenhance"  value="" />              my $confname = $defdom.'-domainconfig';
    <input type="hidden" name="blackwhite"  value="" />              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
    <input type="hidden" name="remember"  value="" />                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />                  unless ($extra eq '-1') {
    <input type="hidden" name="localres" value="$env{'form.localres'}" />                      $js .= "\n".$extra."\n";
   </form>                  }
 ENDSERVERFORM              }
     my $coursecatalog;          }
     if (($showcoursecat eq '') || ($showcoursecat)) {      }
         $coursecatalog = &coursecatalog_link($lt{'catalog'});  
     }      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
     my $newuserlink;         { 'redirect'       => [$expire,'/adm/roles'],
     if ($shownewuserlink) {   'add_entries' => \%add_entries,
         $newuserlink = &newuser_link($lt{'newuser'});   'only_body'   => 1,}));
     }  
     if ($fullgraph) {  # ----------------------------------------------------------------------- Texts
         $r->print(<<HEADER);  
   <!-- The LON-CAPA Header -->      my %lt=&Apache::lonlocal::texthash(
   <tr>            'un'       => 'Username',
             'pw'       => 'Password',
    <!-- Row 1 Columns 2-4 -->            'dom'      => 'Domain',
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg">            'perc'     => 'percent',
 HEADER            'load'     => 'Server Load',
         if ($showbanner) {            'userload' => 'User Load',
             $r->print(<<ENDBANNER);            'catalog'  => 'Course/Community Catalog',
 <img src="$img" border="0" alt="The Learning Online Network with CAPA" />            'log'      => 'Log in',
 ENDBANNER            'help'     => 'Log-in Help',
         }            'serv'     => 'Server',
         $r->print(<<ENDSTART);            'servadm'  => 'Server Administration',
    </td>            'helpdesk' => 'Contact Helpdesk',
   </tr>            'forgotpw' => 'Forgot password?',
             'newuser'  => 'New User?',
   <!-- The gray bar that starts the two table frames -->         );
   <tr>  # -------------------------------------------------- Change password field name
   
    <!-- Row 2 Column 1 -->      my $forgotpw = &forgotpwdisplay(%lt);
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>      $forgotpw .= '<br />' if $forgotpw;
       my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
    <!-- Row 2 Column 2 -->      if ($loginhelp) {
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
       }
    <!-- Row 2 Column 3 -->  
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>  # ---------------------------------------------------- Serve out DES JavaScript
       {
    <!-- Row 2 Column 4 -->      my $jsh=Apache::File->new($include."/londes.js");
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>      $r->print(<$jsh>);
   </tr>      }
   <tr>  # ---------------------------------------------------------- Serve rest of page
      
    <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->      $r->print(
    <!-- Row 3 Column 1 -->      '<div class="LC_Box"'
    <td valign="top" height="60" align="left" bgcolor="$sidebg">     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
     <table cellpadding="0" cellspacing="2" border="0">  );
      <tr>  
       <td>&nbsp;</td>      $r->print(<<ENDSERVERFORM);
       <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>  <form name="server" action="/adm/authenticate" method="post" target="_top">
      </tr>     <input type="hidden" name="logtoken" value="$logtoken" />
      <tr>     <input type="hidden" name="serverid" value="$lonhost" />
       <td>&nbsp;</td>     <input type="hidden" name="uname" value="" />
       <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>     <input type="hidden" name="upass0" value="" />
      </tr>$coursecatalog     <input type="hidden" name="udom" value="" />
      <tr>     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
       <td colspan="2">&nbsp;</td>     <input type="hidden" name="localres" value="$env{'form.localres'}" />
      </tr>    </form>
     </table>  ENDSERVERFORM
    </td>      my $coursecatalog;
    <!-- The shaded space between the two main columns -->      if (($showcoursecat eq '') || ($showcoursecat)) {
    <!-- Row 3 Column 2 -->          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      }
       my $newuserlink;
    <!-- The right main column holding the large LON-CAPA logo-->      if ($shownewuserlink) {
    <!-- Rows 3-4 Column 3 -->          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">      }
 ENDSTART      my $logintitle =
         if ($showmainlogo) {          '<h2 class="LC_hcell"'
             $r->print(<<ENDLOGO);         .' style="background:'.$loginbox_header_bgcol.';'
     <center>         .' color:'.$loginbox_header_textcol.'">'
      <img src="$logo" alt="" />         .$lt{'log'}
     </center>         .'</h2>';
 ENDLOGO  
         }      my $noscript_warning='<noscript><span class="LC_warning"><b>'
         $r->print(<<ENDTOP);                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
    </td>                          .'</b></span></noscript>';
       my $helpdeskscript;
    <!-- Row 3 Column 4 -->      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>                                         $authdomain,\$helpdeskscript,
   </tr>                                         $showhelpdesk,\@possdoms);
   <tr>  
       my $mobileargs;
    <!-- The entry form -->      if ($clientmobile) {
    <!-- Row 4 Column 1 -->          $mobileargs = 'autocapitalize="off" autocorrect="off"';
    <td align="center" valign="middle" bgcolor="$sidebg">      }
 ENDTOP      my $loginform=(<<LFORM);
     } else {  <form name="client" action="" onsubmit="return(send())">
         $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'    <input type="hidden" name="lextkey" value="$lextkey" />
                  .'<h2>'.&mt('Text-based Interface Login').'</h2>'    <input type="hidden" name="uextkey" value="$uextkey" />
                  .$announcements);    <b><label for="uname">$lt{'un'}</label>:</b><br />
     }    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
     $r->print('<form name="client" action="" onsubmit="return(send())">');    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
     unless ($fullgraph) {    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
         $r->print(<<ENDACCESSOPTIONS);    <b><label for="udom">$lt{'dom'}</label>:</b><br />
 <h3>$lt{'options_headline'}</h3>    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
 <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />    <input type="submit" value="$lt{'log'}" />
 <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />  </form>
 <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />  LFORM
 <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />  
 <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />      if ($showbanner) {
 <br />          $r->print(<<HEADER);
 <input type="checkbox" name="remember" /> $lt{'remember'}<hr />  <!-- The LON-CAPA Header -->
 ENDACCESSOPTIONS  <div style="background:$pgbg;margin:0;width:100%;">
     } else {    <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
         $r->print(<<ENDNOOPT);  </div>
 <input type="hidden" name="imagesuppress"  value="" />  HEADER
 <input type="hidden" name="embedsuppress"  value="" />      }
 <input type="hidden" name="appletsuppress"  value="" />      $r->print(<<ENDTOP);
 <input type="hidden" name="fontenhance"  value="" />  <div style="float:left;margin-top:0;">
 <input type="hidden" name="blackwhite"  value="" />  <div class="LC_Box" style="background:$loginbox_bg;">
 <input type="hidden" name="remember"  value="" />    $logintitle
 ENDNOOPT    $loginform
     }    $noscript_warning
     my $logintitle;  </div>
     if ($loginheader eq 'text') {   
         $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';  <div class="LC_Box" style="padding-top: 10px;">
     } else {    $loginhelp
         $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.    $forgotpw
                       &mt('User Authentication').'" /></td>';    $contactblock
     }    $newuserlink
     my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'    $coursecatalog
                         .'<noscript><div class="LC_warning"><font size="-1">'  </div>
                         .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')  </div>
                         .'</font></div></noscript></td>';  
     $r->print(<<ENDLOGIN);  <div>
      <input type="hidden" name="lextkey" value="$lextkey" />  ENDTOP
      <input type="hidden" name="uextkey" value="$uextkey" />      if ($showmainlogo) {
           $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
      <!-- Start the sub-table for text and input alignment -->      }
      <table border="0" cellspacing="0" cellpadding="0">  $r->print(<<ENDTOP);
       <tr>$logintitle</tr>  $announcements
       <tr>$noscript_warning</tr>  </div>
       <tr>  <hr style="clear:both;" />
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>  ENDTOP
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
       </tr>      $domainrow = <<"END";
       <tr>        <tr>
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="upass$now">$lt{'pw'}</label>:</b></font></td>         <td  align="left" valign="top">
        <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>          <small><b>$lt{'dom'}:&nbsp;</b></small>
       </tr>         </td>
       <tr>         <td  align="left" valign="top">
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="udom">$lt{'dom'}</label>:</b></font></td>          <small><tt>&nbsp;$domain</tt></small>
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>         </td>
       </tr>        </tr>
       <tr>  END
        <td bgcolor="$mainbg">&nbsp;</td>      $serverrow = <<"END";
        <td bgcolor="$mainbg" valign="bottom" align="center">        <tr>
         <br />         <td  align="left" valign="top">
         <input type="submit" value="$lt{'log'}" />          <small><b>$lt{'serv'}:&nbsp;</b></small>
        </td>         </td>
       </tr>         <td align="left" valign="top">
       <tr>          <small><tt>&nbsp;$lonhost ($role)</tt></small>
        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">         </td>
         $loginhelp        </tr>
         $forgotpw  END
         $newuserlink      if ($loadlim) {
         <br />          $loadrow = <<"END";
        </td>        <tr>
       </tr>         <td align="left" valign="top">
      </table>          <small><b>$lt{'load'}:&nbsp;</b></small>
      <!-- End sub-table -->         </td>
     </form>         <td align="left" valign="top">
 ENDLOGIN          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
     if ($fullgraph) {         </td>
         my $helpdeskscript;        </tr>
         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,  END
                                   $version,$authdomain,\$helpdeskscript);      }
  $r->print(<<ENDDOCUMENT);      if ($uloadlim) {
    </td>          $userloadrow = <<"END";
         <tr>
    <!-- Row 4 Column 2 -->         <td align="left" valign="top">
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>          <small><b>$lt{'userload'}:&nbsp;</b></small>
          </td>
    <!-- Row 4 Column 3 -->         <td align="left" valign="top">
 <td bgcolor="$mainbg">$announcements</td>          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
          </td>
    <!-- Row 4 Column 4 -->        </tr>
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>  END
   </tr>      }
   <tr>      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
           $versionrow = <<"END";
    <!-- Row 5 Column 1 -->        <tr>
    <td bgcolor="$sidebg" valign="middle" align="left">         <td colspan="2" align="left">
      <br />          <small>$version</small>
      <table border="0" cellspacing="0" cellpadding="0">         </td>
       <tr>        </tr>
        <td bgcolor="$sidebg" align="left" valign="top">  END
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>      }
        </td>  
        <td bgcolor="$sidebg" align="left" valign="middle">      $r->print(<<ENDDOCUMENT);
         <small><tt>&nbsp;$domain</tt></small>      <div style="float: left;">
        </td>       <table border="0" cellspacing="0" cellpadding="0">
       </tr>  $domainrow
       <tr>  $serverrow
        <td bgcolor="$sidebg" align="left" valign="top">  $loadrow    
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>  $userloadrow
        </td>  $versionrow
        <td bgcolor="$sidebg" align="left" valign="middle">       </table>
         <small><tt>&nbsp;$lonhost ($role)</tt></small>      </div>
        </td>      <div style="float: right;">
       </tr>      $domainlogo
       <tr>      </div>
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">      <br style="clear:both;" />
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small></span>   </div>
        </td>  
        <td bgcolor="$sidebg" align="left" valign="middle">  <script type="text/javascript">
         <small><tt>&nbsp;$loadpercent%</tt></small>  // <![CDATA[
        </td>  // the if prevents the script error if the browser can not handle this
       </tr>  if ( document.client.uname ) { document.client.uname.focus(); }
       <tr>  // ]]>
        <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">  </script>
         <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small></span>  $helpdeskscript
        </td>  
        <td bgcolor="$sidebg" align="left" valign="middle">  ENDDOCUMENT
         <small><tt>&nbsp;$userloadpercent%</tt></small>      my %endargs = ( 'noredirectlink' => 1, );
        </td>      $r->print(&Apache::loncommon::end_page(\%endargs));
       </tr>      return OK;
      </table>  }
      <br />  
     $contactblock  sub check_loginvia {
    </td>      my ($domain,$lonhost) = @_;
       if ($domain eq '' || $lonhost eq '') {
    <!-- Row 5 Column 2 -->          return;
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      }
       my %domconfhash = &Apache::loncommon::get_domainconf($domain);
    <!-- Row 5 Column 3 -->      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
    <td width="100%" valign="bottom" bgcolor="$mainbg">      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
 $domainlogo      my $output;
 </td>      if ($loginvia ne '') {
           my $noredirect;
    <!-- Row 5 Column 4 -->          my $ip = $ENV{'REMOTE_ADDR'};
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>          if ($ip eq '127.0.0.1') {
   </tr>              $noredirect = 1;
   <tr>          } else {
               if ($loginvia_exempt ne '') {
    <!-- Row 6 Column 1 -->                  my @exempt = split(',',$loginvia_exempt);
    <td bgcolor="$sidebg">&nbsp;</td>                  if (grep(/^\Q$ip\E$/,@exempt)) {
                       $noredirect = 1;
    <!-- Row 6 Column 2 -->                  }
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>              }
           }
    <!-- Row 6 Column 3 -->          unless ($noredirect) {
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>              my ($newhost,$path);
               if ($loginvia =~ /:/) {
    <!-- Row 6 Column 4 -->                  ($newhost,$path) = split(':',$loginvia);
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>              } else {
   </tr>                  $newhost = $loginvia;
  </table>              }
               if ($newhost ne $lonhost) {
 <script type="text/javascript">                  if (&Apache::lonnet::hostname($newhost) ne '') {
 // <![CDATA[                      $output = &redirect_page($newhost,$path);
 // the if prevents the script error if the browser can not handle this                  }
 if ( document.client.uname ) { document.client.uname.focus(); }              }
 // ]]>          }
 </script>      }
 $helpdeskscript      return $output;
   }
 ENDDOCUMENT  
 }  sub redirect_page {
     my %endargs = ( 'noredirectlink' => 1, );      my ($desthost,$path) = @_;
     $r->print(&Apache::loncommon::end_page(\%endargs));      my $protocol = $Apache::lonnet::protocol{$desthost};
     return OK;      $protocol = 'http' if ($protocol ne 'https');
 }      unless ($path =~ m{^/}) {
           $path = '/'.$path;
 sub check_loginvia {      }
     my ($domain,$lonhost) = @_;      my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
     if ($domain eq '' || $lonhost eq '') {      if ($env{'form.firsturl'} ne '') {
         return;          $url .='?firsturl='.$env{'form.firsturl'};
     }      }
     my %domconfhash = &Apache::loncommon::get_domainconf($domain);      my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
     my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};                                                      {'redirect' => [0,$url],});
     my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};      my $end_page   = &Apache::loncommon::end_page();
     my $output;      return $start_page.$end_page;
     if ($loginvia ne '') {  }
         my $noredirect;  
         my $ip = $ENV{'REMOTE_ADDR'};  sub contactdisplay {
         if ($ip eq '127.0.0.1') {      my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
             $noredirect = 1;          $possdoms) = @_;
         } else {      my $contactblock;
             if ($loginvia_exempt ne '') {      my $origmail;
                 my @exempt = split(',',$loginvia_exempt);      if (ref($possdoms) eq 'ARRAY') {
                 if (grep(/^\Q$ip\E$/,@exempt)) {          if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
                     $noredirect = 1;              $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
                 }          }
             }      }
         }      my $requestmail =
         unless ($noredirect) {          &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
             my ($newhost,$path);                                                   $authdomain,$origmail);
             if ($loginvia =~ /:/) {      unless ($showhelpdesk eq '0') {
                 ($newhost,$path) = split(':',$loginvia);          if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
             } else {              $showhelpdesk = 1;
                 $newhost = $loginvia;          } else {
             }              $showhelpdesk = 0;
             if ($newhost ne $lonhost) {          }
                 if (&Apache::lonnet::hostname($newhost) ne '') {      }
                     $output = &redirect_page($newhost,$path);      if ($servadm && $showadminmail) {
                 }          $contactblock .= $$lt{'servadm'}.':<br />'.
             }                           '<tt>'.$servadm.'</tt><br />';
         }      }
     }      if ($showhelpdesk) {
     return $output;          $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
 }          my $thisurl = &escape('/adm/login');
           $$helpdeskscript = <<"ENDSCRIPT";
 sub redirect_page {  <script type="text/javascript">
     my ($desthost,$path) = @_;  // <![CDATA[
     my $protocol = $Apache::lonnet::protocol{$desthost};  function helpdesk() {
     $protocol = 'http' if ($protocol ne 'https');      var possdom = document.client.udom.value;
     unless ($path =~ m{^/}) {      var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
         $path = '/'.$path;      if (codedom == '') {
     }          codedom = "$authdomain";
     my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;      }
     if ($env{'form.firsturl'} ne '') {      var querystr = "origurl=$thisurl&codedom="+codedom;
         $url .='?firsturl='.$env{'form.firsturl'};      document.location.href = "/adm/helpdesk?"+querystr;
     }      return;
     my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,  }
                                                     {'redirect' => [0,$url],});  // ]]>
     my $end_page   = &Apache::loncommon::end_page();  </script>
     return $start_page.$end_page;  ENDSCRIPT
 }      }
       return $contactblock;
 sub contactdisplay {  }
     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;  
     my $contactblock;  sub forgotpwdisplay {
     my $showhelpdesk = 0;      my (%lt) = @_;
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};      my $prompt_for_resetpw = 1;
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {      if ($prompt_for_resetpw) {
         $showhelpdesk = 1;          return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
     }      }
     if ($servadm && $showadminmail) {      return;
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.  }
                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';  
     }  sub coursecatalog_link {
     if ($showhelpdesk) {      my ($linkname) = @_;
         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';      return <<"END";
         my $thisurl = &escape('/adm/login');        <a href="/adm/coursecatalog">$linkname</a>
         $$helpdeskscript = <<"ENDSCRIPT";  END
 <script type="text/javascript">  }
 // <![CDATA[  
 function helpdesk() {  sub newuser_link {
     var codedom = document.client.udom.value;      my ($linkname) = @_;
     if (codedom == '') {      return '<a href="/adm/createaccount">'.$linkname.'</a>';
         codedom = "$authdomain";  }
     }  
     var querystr = "origurl=$thisurl&codedom="+codedom;  1;
     document.location.href = "/adm/helpdesk?"+querystr;  __END__
     return;  
 }  
 // ]]>  
 </script>  
 ENDSCRIPT  
     }  
     $contactblock .= <<"ENDBLOCK";  
      &nbsp;&nbsp;&nbsp;$version  
 ENDBLOCK  
     return $contactblock;  
 }  
   
 sub forgotpwdisplay {  
     my (%lt) = @_;  
     my $prompt_for_resetpw = 1;   
     if ($prompt_for_resetpw) {  
         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br />';  
     }  
     return;  
 }  
   
 sub loginhelpdisplay {  
     my (%lt) = @_;  
     my $login_help = 1;  
     if ($login_help) {  
         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';  
     }  
     return;  
 }  
   
 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.1.169

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