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Diff for /loncom/auth/lonlogin.pm between versions 1.132 and 1.160

version 1.132, 2010/02/08 13:28:40 version 1.160, 2014/12/05 12:03:20
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;
     
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
   
     &Apache::loncommon::get_unprocessed_cgi      &Apache::loncommon::get_unprocessed_cgi
  (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
       $ENV{'REDIRECT_QUERY_STRING'}),        $ENV{'REDIRECT_QUERY_STRING'}),
  ['interface','username','domain','firsturl','localpath','localres',   ['interface','username','domain','firsturl','localpath','localres',
   'token','role','symb']);    'token','role','symb','iptoken']);
     if (!defined($env{'form.firsturl'})) {      if (!defined($env{'form.firsturl'})) {
         &Apache::lonacc::get_posted_cgi($r,['firsturl']);          &Apache::lonacc::get_posted_cgi($r,['firsturl']);
     }      }
   
 # -- check if they are a migrating user  # -- check if they are a migrating user
     if (defined($env{'form.token'})) {      if (defined($env{'form.token'})) {
  return &Apache::migrateuser::handler($r);   return &Apache::migrateuser::handler($r);
     }      }
   
     &Apache::loncommon::no_cache($r);      &Apache::loncommon::no_cache($r);
     &Apache::lonlocal::get_language_handle($r);      &Apache::lonlocal::get_language_handle($r);
     &Apache::loncommon::content_type($r,'text/html');      &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
   
   
 # Are we re-routing?  # Are we re-routing?
     if (-e '/home/httpd/html/lon-status/reroute.txt') {      my $londocroot = $r->dir_config('lonDocRoot');
  &Apache::lonauth::reroute($r);      if (-e "$londocroot/lon-status/reroute.txt") {
  return OK;   &Apache::lonauth::reroute($r);
     }   return OK;
       }
   
 # -------------------------------- Prevent users from attempting to login twice      $env{'form.firsturl'} =~ s/(`)/'/g;
     my $handle = &Apache::lonnet::check_for_valid_session($r);  
     if ($handle=~/^publicuser\_/) {  # -------------------------------- Prevent users from attempting to login twice
 # For "public user" - remove it, we apparently really want to login      my $handle = &Apache::lonnet::check_for_valid_session($r);
  unlink($r->dir_config('lonIDsDir')."/$handle.id");      if ($handle ne '') {
     } elsif ($handle ne '') {          my $lonidsdir=$r->dir_config('lonIDsDir');
 # Indeed, a valid token is found          if ($handle=~/^publicuser\_/) {
  my $start_page =   # For "public user" - remove it, we apparently really want to login
     &Apache::loncommon::start_page('Already logged in');      unlink($r->dir_config('lonIDsDir')."/$handle.id");
  my $end_page =           } else {
     &Apache::loncommon::end_page();  # Indeed, a valid token is found
         my $dest = '/adm/roles';              &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
         if ($env{'form.firsturl'} ne '') {      my $start_page =
             $dest = $env{'form.firsturl'};           &Apache::loncommon::start_page('Already logged in');
         }      my $end_page =
                   &Apache::loncommon::end_page();
     my $dom = &Apache::lonnet::default_login_domain();              my $dest = '/adm/roles';
     my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom);              if ($env{'form.firsturl'} ne '') {
                       $dest = $env{'form.firsturl'};
     my $loginhelp_page = $helpconfig{'helpsettings'}{'loginhelpurl'};              }
     if ($loginhelp_page eq '') {      $r->print(
  $loginhelp_page = '/adm/loginproblems.html';                    $start_page
     }                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
  $r->print(                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
                   $start_page                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
                  .'<h1>'.&mt('You are already logged in!').'</h1>'                   .$end_page
                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',                   );
                   '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'              return OK;
                  .'<p><a href="'.$loginhelp_page.'">'.&mt('Login problems?').'</a></p>'          }
                  .$dom.' '.$end_page      }
                  );  
         return OK;  # ---------------------------------------------------- No valid token, continue
     }  
   # ---------------------------- Not possible to really login to domain "public"
 # ---------------------------------------------------- No valid token, continue      if ($env{'form.domain'} eq 'public') {
    $env{'form.domain'}='';
  # ---------------------------- Not possible to really login to domain "public"   $env{'form.username'}='';
     if ($env{'form.domain'} eq 'public') {      }
  $env{'form.domain'}='';  
  $env{'form.username'}='';  # ------ Is this page requested because /adm/migrateuser detected an IP change?
     }      my %sessiondata;
 # ----------------------------------------------------------- Process Interface      if ($env{'form.iptoken'}) {
     $env{'form.interface'}=~s/\W//g;          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
           my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};      }
   # ----------------------------------------------------------- Process Interface
     my $iconpath=       $env{'form.interface'}=~s/\W//g;
  &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));  
       (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     my $lonhost = $r->dir_config('lonHostID');          &Apache::loncommon::decode_user_agent();
     my $domain = &Apache::lonnet::default_login_domain();  
     my %domconfhash = &Apache::loncommon::get_domainconf($domain);      my $iconpath=
     if ($lonhost ne '') {   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
         my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};  
         if (($loginvia ne '') && ($loginvia ne $lonhost)) {      my $lonhost = $r->dir_config('lonHostID');
             if (&Apache::lonnet::hostname($loginvia) ne '') {      my $domain = &Apache::lonnet::default_login_domain();
                 $r->print(&redirect_page($loginvia));      if ($lonhost ne '') {
                 return OK;          unless ($sessiondata{'sessionserver'}) {
             }              my $redirect = &check_loginvia($domain,$lonhost);
         }              if ($redirect) {
     }                  $r->print($redirect);
                   return OK;
     if (($env{'form.domain'}) &&               }
  (&Apache::lonnet::domain($env{'form.domain'},'description'))) {          }
  $domain=$env{'form.domain'};      }
     }  
     my $role    = $r->dir_config('lonRole');      if (($sessiondata{'domain'}) &&
     my $loadlim = $r->dir_config('lonLoadLim');          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     my $servadm = $r->dir_config('lonAdmEMail');          $domain=$sessiondata{'domain'};
     my $tabdir  = $r->dir_config('lonTabDir');      } elsif (($env{'form.domain'}) &&
     my $include = $r->dir_config('lonIncludes');   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     my $expire  = $r->dir_config('lonExpire');   $domain=$env{'form.domain'};
     my $version = $r->dir_config('lonVersion');      }
     my $host_name = &Apache::lonnet::hostname($lonhost);  
       my $role    = $r->dir_config('lonRole');
 # --------------------------------------------- Default values for login fields      my $loadlim = $r->dir_config('lonLoadLim');
       my $uloadlim= $r->dir_config('lonUserLoadLim');
     my $authusername=($env{'form.username'}?$env{'form.username'}:'');      my $servadm = $r->dir_config('lonAdmEMail');
     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);      my $tabdir  = $r->dir_config('lonTabDir');
       my $include = $r->dir_config('lonIncludes');
 # ---------------------------------------------------------- Determine own load      my $expire  = $r->dir_config('lonExpire');
     my $loadavg;      my $version = $r->dir_config('lonVersion');
     {      my $host_name = &Apache::lonnet::hostname($lonhost);
  my $loadfile=Apache::File->new('/proc/loadavg');  
  $loadavg=<$loadfile>;  # --------------------------------------------- Default values for login fields
     }     
     $loadavg =~ s/\s.*//g;      my ($authusername,$authdomain);
     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);      if ($sessiondata{'username'}) {
     my $userloadpercent=&Apache::lonnet::userload();          $authusername=$sessiondata{'username'};
       } else {
 # ------------------------------------------------------- Do the load balancing          $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
     my $otherserver= &Apache::lonnet::absolute_url($host_name);          $authusername=($env{'form.username'}?$env{'form.username'}:'');
     my $firsturl=      }
     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});      if ($sessiondata{'domain'}) {
 # ---------------------------------------------------------- Are we overloaded?          $authdomain=$sessiondata{'domain'};
     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {      } else {
         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
  if ($unloaded) { $otherserver=$unloaded; }          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
     }      }
   
 # ----------------------------------------------------------- Get announcements  # ---------------------------------------------------------- Determine own load
     my $announcements=&Apache::lonnet::getannounce();      my $loadavg;
 # -------------------------------------------------------- Set login parameters      {
    my $loadfile=Apache::File->new('/proc/loadavg');
     my @hexstr=('0','1','2','3','4','5','6','7',   $loadavg=<$loadfile>;
                 '8','9','a','b','c','d','e','f');      }
     my $lkey='';      $loadavg =~ s/\s.*//g;
     for (0..7) {  
         $lkey.=$hexstr[rand(15)];      my ($loadpercent,$userloadpercent);
     }      if ($loadlim) {
           $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
     my $ukey='';      }
     for (0..7) {      if ($uloadlim) {
         $ukey.=$hexstr[rand(15)];          $userloadpercent=&Apache::lonnet::userload();
     }      }
   
     my $lextkey=hex($lkey);      my $firsturl=
     if ($lextkey>2147483647) { $lextkey-=4294967296; }      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
   
     my $uextkey=hex($ukey);  # ----------------------------------------------------------- Get announcements
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      my $announcements=&Apache::lonnet::getannounce();
   # -------------------------------------------------------- Set login parameters
 # -------------------------------------------------------- Store away log token  
     my $tokenextras;      my @hexstr=('0','1','2','3','4','5','6','7',
     if ($env{'form.role'}) {                  '8','9','a','b','c','d','e','f');
         $tokenextras = '&role='.&escape($env{'form.role'});      my $lkey='';
     }      for (0..7) {
     if ($env{'form.symb'}) {          $lkey.=$hexstr[rand(15)];
         if (!$tokenextras) {      }
             $tokenextras = '&';  
         }      my $ukey='';
         $tokenextras .= '&symb='.&escape($env{'form.symb'});      for (0..7) {
     }          $ukey.=$hexstr[rand(15)];
     my $logtoken=Apache::lonnet::reply(      }
        'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,  
        $lonhost);      my $lextkey=hex($lkey);
       if ($lextkey>2147483647) { $lextkey-=4294967296; }
 # ------------------- If we cannot talk to ourselves, we are in serious trouble  
       my $uextkey=hex($ukey);
     if ($logtoken eq 'con_lost') {      if ($uextkey>2147483647) { $uextkey-=4294967296; }
         my $spares='';  
  my $last;  # -------------------------------------------------------- Store away log token
         foreach my $hostid (sort      my $tokenextras;
     {      if ($env{'form.role'}) {
  &Apache::lonnet::hostname($a) cmp          $tokenextras = '&role='.&escape($env{'form.role'});
     &Apache::lonnet::hostname($b);      }
     }      if ($env{'form.symb'}) {
     keys(%Apache::lonnet::spareid)) {          if (!$tokenextras) {
             next if ($hostid eq $lonhost);              $tokenextras = '&';
     my $hostname = &Apache::lonnet::hostname($hostid);          }
     next if ($last eq $hostname);          $tokenextras .= '&symb='.&escape($env{'form.symb'});
             $spares.='<br /><font size="+1"><a href="http://'.      }
                 $hostname.      my $logtoken=Apache::lonnet::reply(
                 '/adm/login?domain='.$authdomain.'">'.         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
                 $hostname.'</a>'.         $lonhost);
                 ' '.&mt('(preferred)').'</font>'.$/;  
     $last=$hostname;  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
         }  #    we are in serious trouble
 $spares.= '<br />';  
 my %all_hostnames = &Apache::lonnet::all_hostnames();      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
 foreach my $hostid (sort          if ($logtoken eq 'no_such_host') {
     {              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
  &Apache::lonnet::hostname($a) cmp          }
     &Apache::lonnet::hostname($b);          my $spares='';
     }   my $last;
     keys(%all_hostnames)) {          foreach my $hostid (sort
     next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});      {
     my $hostname = &Apache::lonnet::hostname($hostid);   &Apache::lonnet::hostname($a) cmp
     next if ($last eq $hostname);      &Apache::lonnet::hostname($b);
     $spares.='<br /><a href="http://'.      }
  $hostname.      keys(%Apache::lonnet::spareid)) {
  '/adm/login?domain='.$authdomain.'">'.              next if ($hostid eq $lonhost);
  $hostname.'</a>';      my $hostname = &Apache::lonnet::hostname($hostid);
     $last=$hostname;      next if (($last eq $hostname) || ($hostname eq ''));
 }              $spares.='<br /><font size="+1"><a href="http://'.
 $r->print(                  $hostname.
    '<html>'                  '/adm/login?domain='.$authdomain.'">'.
   .'<head><title>'                  $hostname.'</a>'.
   .&mt('The LearningOnline Network with CAPA')                  ' '.&mt('(preferred)').'</font>'.$/;
   .'</title></head>'      $last=$hostname;
   .'<body bgcolor="#FFFFFF">'          }
   .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'          if ($spares) {
   .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'              $spares.= '<br />';
   .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'          }
   .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'          my %all_hostnames = &Apache::lonnet::all_hostnames();
   .$spares          foreach my $hostid (sort
   .'</body>'      {
   .'</html>'   &Apache::lonnet::hostname($a) cmp
 );      &Apache::lonnet::hostname($b);
 return OK;      }
 }      keys(%all_hostnames)) {
               next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
 # ----------------------------------------------- Apparently we are in business              my $hostname = &Apache::lonnet::hostname($hostid);
 $servadm=~s/\,/\<br \/\>/g;              next if (($last eq $hostname) || ($hostname eq ''));
               $spares.='<br /><a href="http://'.
 # ----------------------------------------------------------- Front page design               $hostname.
 my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);               '/adm/login?domain='.$authdomain.'">'.
 my $font=&Apache::loncommon::designparm('login.font',$domain);               $hostname.'</a>';
 my $link=&Apache::loncommon::designparm('login.link',$domain);              $last=$hostname;
 my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);           }
 my $alink=&Apache::loncommon::designparm('login.alink',$domain);           $r->print(
 my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);     '<html>'
 my $logo=&Apache::loncommon::designparm('login.logo',$domain);    .'<head><title>'
 my $img=&Apache::loncommon::designparm('login.img',$domain);    .&mt('The LearningOnline Network with CAPA')
 my $domainlogo='<div>'.&Apache::loncommon::domainlogo($domain).'</div>';    .'</title></head>'
 my $login=&Apache::loncommon::designparm('login.login',$domain);    .'<body bgcolor="#FFFFFF">'
 if ($login eq '') {    .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
 $login = $iconpath.'/'.&mt('userauthentication.gif');    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
 }    .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
 my $showbanner = 1;          if ($spares) {
 my $showmainlogo = 1;              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
 if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {                       .'</p>'
     $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);                       .$spares);
 }          }
 if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {          $r->print('</body>'
     $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);                   .'</html>'
 }          );
 my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);          return OK;
 my $showcoursecat =      }
 &Apache::loncommon::designparm('login.coursecatalog',$domain);  
 my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);  # ----------------------------------------------- Apparently we are in business
 my $shownewuserlink =       $servadm=~s/\,/\<br \/\>/g;
 &Apache::loncommon::designparm('login.newuser',$domain);  
 my $now=time;  # ----------------------------------------------------------- Front page design
 my $js = (<<ENDSCRIPT);      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
       my $font=&Apache::loncommon::designparm('login.font',$domain);
 <script type="text/javascript" language="JavaScript">      my $link=&Apache::loncommon::designparm('login.link',$domain);
 // <![CDATA[      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
 function send()      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
 {      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
 this.document.server.elements.uname.value      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
 =this.document.client.elements.uname.value;      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
       my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
 this.document.server.elements.udom.value      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
 =this.document.client.elements.udom.value;      my $img=&Apache::loncommon::designparm('login.img',$domain);
       my $domainlogo=&Apache::loncommon::domainlogo($domain);
 uextkey=this.document.client.elements.uextkey.value;      my $showbanner = 1;
 lextkey=this.document.client.elements.lextkey.value;      my $showmainlogo = 1;
 initkeys();      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
           $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
 this.document.server.elements.upass0.value      }
     =crypted(this.document.client.elements.upass$now.value.substr(0,15));      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
 this.document.server.elements.upass1.value          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
     =crypted(this.document.client.elements.upass$now.value.substr(15,15));      }
 this.document.server.elements.upass2.value      my $showadminmail;
     =crypted(this.document.client.elements.upass$now.value.substr(30,15));      my @possdoms = &Apache::lonnet::current_machine_domains();
       if (grep(/^\Q$domain\E$/,@possdoms)) {
 this.document.client.elements.uname.value='';          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
 this.document.client.elements.upass$now.value='';      }
       my $showcoursecat =
 this.document.server.submit();          &Apache::loncommon::designparm('login.coursecatalog',$domain);
 return false;      my $shownewuserlink =
 }          &Apache::loncommon::designparm('login.newuser',$domain);
 // ]]>      my $showhelpdesk =
 </script>          &Apache::loncommon::designparm('login.helpdesk',$domain);
       my $now=time;
 ENDSCRIPT      my $js = (<<ENDSCRIPT);
   
 # --------------------------------------------------- Print login screen header  <script type="text/javascript" language="JavaScript">
   // <![CDATA[
 my %add_entries = (  function send()
        bgcolor      => "$mainbg",  {
        text         => "$font",  this.document.server.elements.uname.value
        link         => "$link",  =this.document.client.elements.uname.value;
        vlink        => "$vlink",  
        alink        => "$alink",);  this.document.server.elements.udom.value
   =this.document.client.elements.udom.value;
 $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,  
        { 'redirect'       => [$expire,'/adm/roles'],   uextkey=this.document.client.elements.uextkey.value;
  'add_entries' => \%add_entries,  lextkey=this.document.client.elements.lextkey.value;
  'only_body'   => 1,}));  initkeys();
   
 # ----------------------------------------------------------------------- Texts  this.document.server.elements.upass0.value
       =this.document.client.elements.upass$now.value.substr(0,15);
 my %lt=&Apache::lonlocal::texthash(  this.document.server.elements.upass1.value
           'un'       => 'Username',      =this.document.client.elements.upass$now.value.substr(15,15);
           'pw'       => 'Password',  this.document.server.elements.upass2.value
           'dom'      => 'Domain',      =this.document.client.elements.upass$now.value.substr(30,15);
           'perc'     => 'percent',  
           'load'     => 'Server Load',  if(this.document.server.action.substr(0,5) === 'http:'){
           'userload' => 'User Load',      for (var idx in [1,2,3]){
           'catalog'  => 'Course/Community Catalog',          this.document.server.elements['upass' + idx].value =
           'log'      => 'Log in',              crypted(this.document.server.elements['upass' + idx].value);
           'help'     => 'Log-in Help',      }
           'serv'     => 'Server',  }
           'servadm'  => 'Server Administration',  
           'helpdesk' => 'Contact Helpdesk',  this.document.client.elements.uname.value='';
           'forgotpw' => 'Forgot password?',  this.document.client.elements.upass$now.value='';
           'newuser'  => 'New User?',  
        );  this.document.server.submit();
 # -------------------------------------------------- Change password field name  return false;
   }
 my $forgotpw = &forgotpwdisplay(%lt);  
 $forgotpw .= '<br />' if $forgotpw;  function enableInput() {
 my $loginhelp = &loginhelpdisplay(%lt);      this.document.client.elements.upass$now.removeAttribute("readOnly");
 $loginhelp .= '<br />' if $loginhelp;      this.document.client.elements.uname.removeAttribute("readOnly");
       this.document.client.elements.udom.removeAttribute("readOnly");
 # ---------------------------------------------------- Serve out DES JavaScript      return;
 {  }
 my $jsh=Apache::File->new($include."/londes.js");  
 $r->print(<$jsh>);  // ]]>
 }  </script>
 # ---------------------------------------------------------- Serve rest of page  
   ENDSCRIPT
 $r->print(  
   '<div class="LC_loginpage_container">');  # --------------------------------------------------- Print login screen header
   
 #      my %add_entries = (
 #  If the loadbalancing yielded just http:// because perhaps there's no loadbalancing?         bgcolor      => "$mainbg",
 #  then just us a relative link to authenticate:         text         => "$font",
 #         link         => "$link",
          vlink        => "$vlink",
 $r->print(<<ENDSERVERFORM);         alink        => "$alink",
 <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">                 onload       => 'javascript:enableInput();',);
    <input type="hidden" name="logtoken" value="$logtoken" />  
    <input type="hidden" name="serverid" value="$lonhost" />      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
    <input type="hidden" name="uname" value="" />         { 'redirect'       => [$expire,'/adm/roles'],
    <input type="hidden" name="upass0" value="" />   'add_entries' => \%add_entries,
    <input type="hidden" name="upass1" value="" />   'only_body'   => 1,}));
    <input type="hidden" name="upass2" value="" />  
    <input type="hidden" name="udom" value="" />  # ----------------------------------------------------------------------- Texts
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />  
    <input type="hidden" name="localres" value="$env{'form.localres'}" />      my %lt=&Apache::lonlocal::texthash(
   </form>            'un'       => 'Username',
 ENDSERVERFORM            'pw'       => 'Password',
 my $coursecatalog;            'dom'      => 'Domain',
 if (($showcoursecat eq '') || ($showcoursecat)) {            'perc'     => 'percent',
     $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';            'load'     => 'Server Load',
 }            'userload' => 'User Load',
 my $newuserlink;            'catalog'  => 'Course/Community Catalog',
 if ($shownewuserlink) {            'log'      => 'Log in',
     $newuserlink = &newuser_link($lt{'newuser'}).'<br />';            'help'     => 'Log-in Help',
 }            'serv'     => 'Server',
 my $logintitle;            'servadm'  => 'Server Administration',
 if ($loginheader eq 'text') {            'helpdesk' => 'Contact Helpdesk',
     $logintitle ='<h2>'.$lt{'log'}.'</h2>';            'forgotpw' => 'Forgot password?',
 } else {            'newuser'  => 'New User?',
     $logintitle = '<img src="'.$login.'" alt="'.         );
                   &mt('User Authentication').'" />';  # -------------------------------------------------- Change password field name
 }  
       my $forgotpw = &forgotpwdisplay(%lt);
 my $noscript_warning='<noscript><span class="LC_warning"><b>'      $forgotpw .= '<br />' if $forgotpw;
                      .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
                     .'</b></span></noscript>';      if ($loginhelp) {
 my $helpdeskscript;          $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
 my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,      }
                                    $authdomain,\$helpdeskscript);  
   # ---------------------------------------------------- Serve out DES JavaScript
 my $loginform=(<<LFORM);      {
 <form name="client" action="" onsubmit="return(send())">      my $jsh=Apache::File->new($include."/londes.js");
   <input type="hidden" name="lextkey" value="$lextkey" />      $r->print(<$jsh>);
   <input type="hidden" name="uextkey" value="$uextkey" />      }
   <b><label for="uname">$lt{'un'}</label>:</b><br />  # ---------------------------------------------------------- Serve rest of page
   <input type="text" name="uname" id="uname" size="15" value="$authusername" /><br />  
   <b><label for="upass$now">$lt{'pw'}</label>:</b><br />      $r->print(
   <input type="password" name="upass$now" id="upass$now" size="15" /><br />      '<div class="LC_Box"'
   <b><label for="udom">$lt{'dom'}</label>:</b><br />     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
   <input type="text" name="udom" id="udom" size="15" value="$authdomain" /><br />  );
   <input type="submit" value="$lt{'log'}" />  
 </form>      $r->print(<<ENDSERVERFORM);
 LFORM  <form name="server" action="/adm/authenticate" method="post" target="_top">
      <input type="hidden" name="logtoken" value="$logtoken" />
     if ($showbanner) {     <input type="hidden" name="serverid" value="$lonhost" />
         $r->print(<<HEADER);     <input type="hidden" name="uname" value="" />
 <!-- The LON-CAPA Header -->     <input type="hidden" name="upass0" value="" />
 <div style="background:$pgbg;margin:0;width:100%;">     <input type="hidden" name="upass1" value="" />
   <img src="$img" border="0" alt="The Learning Online Network with CAPA" />     <input type="hidden" name="upass2" value="" />
 </div>     <input type="hidden" name="udom" value="" />
 HEADER     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
     }     <input type="hidden" name="localres" value="$env{'form.localres'}" />
     $r->print(<<ENDTOP);    </form>
 <div class="LC_loginpage_space">&nbsp;</div>  ENDSERVERFORM
 <div class="LC_loginpage_floatLeft">      my $coursecatalog;
 <div class="LC_loginpage_loginContainer">      if (($showcoursecat eq '') || ($showcoursecat)) {
   $logintitle          $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
    <table border="0" align="left" cellspacing="1" cellpadding="2" width="100%">      }
       <tr>      my $newuserlink;
    <td>      if ($shownewuserlink) {
  $loginform          $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
            </td>      }
       </tr>      my $logintitle =
    </table>            '<h2 class="LC_hcell"'
    $noscript_warning         .' style="background:'.$loginbox_header_bgcol.';'
 </div>         .' color:'.$loginbox_header_textcol.'">'
            .$lt{'log'}
 <div class="LC_loginpage_loginInfo">         .'</h2>';
   $loginhelp  
   $forgotpw      my $noscript_warning='<noscript><span class="LC_warning"><b>'
   $contactblock                          .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
   $newuserlink                          .'</b></span></noscript>';
   $coursecatalog      my $helpdeskscript;
 </div>      my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
 </div>                                         $authdomain,\$helpdeskscript,
 ENDTOP                                         $showhelpdesk,\@possdoms);
     if ($showmainlogo) {  
         $r->print(' <img src="'.$logo.'" alt="" />'."\n");      my $mobileargs;
     }      if ($clientmobile) {
 $r->print(<<ENDTOP);          $mobileargs = 'autocapitalize="off" autocorrect="off"';
 $announcements      }
 $domainlogo      my $loginform=(<<LFORM);
 <div class="LC_loginpage_space">&nbsp;</div>  <form name="client" action="" onsubmit="return(send())">
 ENDTOP    <input type="hidden" name="lextkey" value="$lextkey" />
     <input type="hidden" name="uextkey" value="$uextkey" />
 $r->print(<<ENDDOCUMENT);    <b><label for="uname">$lt{'un'}</label>:</b><br />
      <table border="0" cellspacing="0" cellpadding="0">    <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
       <tr>    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
        <td  align="left" valign="top">    <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
         <small><b>$lt{'dom'}:&nbsp;</b></small>    <b><label for="udom">$lt{'dom'}</label>:</b><br />
        </td>    <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
        <td  align="left" valign="top">    <input type="submit" value="$lt{'log'}" />
         <small><tt>&nbsp;$domain</tt></small>  </form>
        </td>  LFORM
       </tr>  
       <tr>      if ($showbanner) {
        <td  align="left" valign="top">          $r->print(<<HEADER);
         <small><b>$lt{'serv'}:&nbsp;</b></small>  <!-- The LON-CAPA Header -->
        </td>  <div style="background:$pgbg;margin:0;width:100%;">
        <td align="left" valign="top">    <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
         <small><tt>&nbsp;$lonhost ($role)</tt></small>  </div>
        </td>  HEADER
       </tr>      }
       <tr>      $r->print(<<ENDTOP);
        <td align="left" valign="top">  <div style="float:left;margin-top:0;">
         <small><b>$lt{'load'}:&nbsp;</b></small>  <div class="LC_Box" style="background:$loginbox_bg;">
        </td>    $logintitle
        <td align="left" valign="top">    $loginform
         <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>    $noscript_warning
        </td>  </div>
       </tr>   
       <tr>  <div class="LC_Box" style="padding-top: 10px;">
        <td align="left" valign="top">    $loginhelp
         <small><b>$lt{'userload'}:&nbsp;</b></small>    $forgotpw
        </td>    $contactblock
        <td align="left" valign="top">    $newuserlink
         <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>    $coursecatalog
        </td>  </div>
       </tr>  </div>
       <tr>  
        <td colspan="2" align="left">  <div>
         <small>$version</small>  ENDTOP
        </td>      if ($showmainlogo) {
       </tr>          $r->print(' <img src="'.$logo.'" alt="" />'."\n");
      </table>      }
  </div>  $r->print(<<ENDTOP);
   $announcements
 <script type="text/javascript">  </div>
 // <![CDATA[  <hr style="clear:both;" />
 // the if prevents the script error if the browser can not handle this  ENDTOP
 if ( document.client.uname ) { document.client.uname.focus(); }      my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
 // ]]>      $domainrow = <<"END";
 </script>        <tr>
 $helpdeskscript         <td  align="left" valign="top">
           <small><b>$lt{'dom'}:&nbsp;</b></small>
 ENDDOCUMENT         </td>
     my %endargs = ( 'noredirectlink' => 1, );         <td  align="left" valign="top">
     $r->print(&Apache::loncommon::end_page(\%endargs));          <small><tt>&nbsp;$domain</tt></small>
     return OK;         </td>
 }        </tr>
   END
 sub redirect_page {      $serverrow = <<"END";
     my ($desthost) = @_;        <tr>
     my $protocol = $Apache::lonnet::protocol{$desthost};         <td  align="left" valign="top">
     $protocol = 'http' if ($protocol ne 'https');          <small><b>$lt{'serv'}:&nbsp;</b></small>
     my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).'/';         </td>
     if ($env{'form.firsturl'} ne '') {         <td align="left" valign="top">
         $url .='?firsturl='.$env{'form.firsturl'};          <small><tt>&nbsp;$lonhost ($role)</tt></small>
     }         </td>
     my $start_page = &Apache::loncommon::start_page('Switching Server',undef,        </tr>
                                                     {'redirect' => [0,$url],});  END
     my $end_page   = &Apache::loncommon::end_page();      if ($loadlim) {
     return $start_page.$end_page;          $loadrow = <<"END";
 }        <tr>
          <td align="left" valign="top">
 sub contactdisplay {          <small><b>$lt{'load'}:&nbsp;</b></small>
     my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript) = @_;         </td>
     my $contactblock;         <td align="left" valign="top">
     my $showhelpdesk = 0;          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};         </td>
     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {        </tr>
         $showhelpdesk = 1;  END
     }      }
     if ($servadm && $showadminmail) {      if ($uloadlim) {
         $contactblock .= $$lt{'servadm'}.':<br />'.          $userloadrow = <<"END";
                          '<tt>'.$servadm.'</tt><br />';        <tr>
     }         <td align="left" valign="top">
     if ($showhelpdesk) {          <small><b>$lt{'userload'}:&nbsp;</b></small>
         $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';         </td>
         my $thisurl = &escape('/adm/login');         <td align="left" valign="top">
         $$helpdeskscript = <<"ENDSCRIPT";          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
 <script type="text/javascript">         </td>
 // <![CDATA[        </tr>
 function helpdesk() {  END
     var codedom = document.client.udom.value;      }
     if (codedom == '') {      if (($version ne '') && ($version ne '<!-- VERSION -->')) {
         codedom = "$authdomain";          $versionrow = <<"END";
     }        <tr>
     var querystr = "origurl=$thisurl&codedom="+codedom;         <td colspan="2" align="left">
     document.location.href = "/adm/helpdesk?"+querystr;          <small>$version</small>
     return;         </td>
 }        </tr>
 // ]]>  END
 </script>      }
 ENDSCRIPT  
     }      $r->print(<<ENDDOCUMENT);
     return $contactblock;      <div style="float: left;">
 }       <table border="0" cellspacing="0" cellpadding="0">
   $domainrow
 sub forgotpwdisplay {  $serverrow
     my (%lt) = @_;  $loadrow    
     my $prompt_for_resetpw = 1;   $userloadrow
     if ($prompt_for_resetpw) {  $versionrow
         return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';       </table>
     }      </div>
     return;      <div style="float: right;">
 }      $domainlogo
       </div>
 sub loginhelpdisplay {      <br style="clear:both;" />
     my (%lt) = @_;   </div>
     my $login_help = 1;  
     if ($login_help) {  <script type="text/javascript">
     my $dom = &Apache::lonnet::default_login_domain();  // <![CDATA[
  my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom);  // the if prevents the script error if the browser can not handle this
  my $loginhelp_url = $helpconfig{'helpsettings'}{'loginhelpurl'};  if ( document.client.uname ) { document.client.uname.focus(); }
  if ($loginhelp_url ne '') {  // ]]>
         return '<a href="'.$loginhelp_url.'">'.$lt{'help'}.'</a>';  </script>
         } else {  $helpdeskscript
         return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>';  
         }  ENDDOCUMENT
     }      my %endargs = ( 'noredirectlink' => 1, );
     return;      $r->print(&Apache::loncommon::end_page(\%endargs));
 }      return OK;
   }
 sub coursecatalog_link {  
     my ($linkname) = @_;  sub check_loginvia {
     return <<"END";      my ($domain,$lonhost) = @_;
       <a href="/adm/coursecatalog">$linkname</a>      if ($domain eq '' || $lonhost eq '') {
 END          return;
 }      }
       my %domconfhash = &Apache::loncommon::get_domainconf($domain);
 sub newuser_link {      my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
     my ($linkname) = @_;      my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
     return '<a href="/adm/createaccount">'.$linkname.'</a>';      my $output;
 }      if ($loginvia ne '') {
           my $noredirect;
 1;          my $ip = $ENV{'REMOTE_ADDR'};
 __END__          if ($ip eq '127.0.0.1') {
               $noredirect = 1;
           } else {
               if ($loginvia_exempt ne '') {
                   my @exempt = split(',',$loginvia_exempt);
                   if (grep(/^\Q$ip\E$/,@exempt)) {
                       $noredirect = 1;
                   }
               }
           }
           unless ($noredirect) {
               my ($newhost,$path);
               if ($loginvia =~ /:/) {
                   ($newhost,$path) = split(':',$loginvia);
               } else {
                   $newhost = $loginvia;
               }
               if ($newhost ne $lonhost) {
                   if (&Apache::lonnet::hostname($newhost) ne '') {
                       $output = &redirect_page($newhost,$path);
                   }
               }
           }
       }
       return $output;
   }
   
   sub redirect_page {
       my ($desthost,$path) = @_;
       my $protocol = $Apache::lonnet::protocol{$desthost};
       $protocol = 'http' if ($protocol ne 'https');
       unless ($path =~ m{^/}) {
           $path = '/'.$path;
       }
       my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
       if ($env{'form.firsturl'} ne '') {
           $url .='?firsturl='.$env{'form.firsturl'};
       }
       my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
                                                       {'redirect' => [0,$url],});
       my $end_page   = &Apache::loncommon::end_page();
       return $start_page.$end_page;
   }
   
   sub contactdisplay {
       my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
           $possdoms) = @_;
       my $contactblock;
       my $origmail;
       if (ref($possdoms) eq 'ARRAY') {
           if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
               $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
           }
       }
       my $requestmail =
           &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                    $authdomain,$origmail);
       unless ($showhelpdesk eq '0') {
           if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
               $showhelpdesk = 1;
           } else {
               $showhelpdesk = 0;
           }
       }
       if ($servadm && $showadminmail) {
           $contactblock .= $$lt{'servadm'}.':<br />'.
                            '<tt>'.$servadm.'</tt><br />';
       }
       if ($showhelpdesk) {
           $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
           my $thisurl = &escape('/adm/login');
           $$helpdeskscript = <<"ENDSCRIPT";
   <script type="text/javascript">
   // <![CDATA[
   function helpdesk() {
       var possdom = document.client.udom.value;
       var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
       if (codedom == '') {
           codedom = "$authdomain";
       }
       var querystr = "origurl=$thisurl&codedom="+codedom;
       document.location.href = "/adm/helpdesk?"+querystr;
       return;
   }
   // ]]>
   </script>
   ENDSCRIPT
       }
       return $contactblock;
   }
   
   sub forgotpwdisplay {
       my (%lt) = @_;
       my $prompt_for_resetpw = 1;
       if ($prompt_for_resetpw) {
           return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
       }
       return;
   }
   
   sub coursecatalog_link {
       my ($linkname) = @_;
       return <<"END";
         <a href="/adm/coursecatalog">$linkname</a>
   END
   }
   
   sub newuser_link {
       my ($linkname) = @_;
       return '<a href="/adm/createaccount">'.$linkname.'</a>';
   }
   
   1;
   __END__
Removed from v.1.132  
changed lines
  Added in v.1.160

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