[BACK]Return to lonlogin.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / auth

Diff for /loncom/auth/lonlogin.pm between versions 1.45 and 1.163

version 1.45, 2003/08/12 19:46:04 version 1.163, 2015/06/06 14:08:58
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/
 #  #
 # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,  
 # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9,  package Apache::lonlogin;
 # 1/17/01 Gerd Kortemeyer  
 #  use strict;
 # 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole  use Apache::Constants qw(:common);
 #   use Apache::File ();
 # 7/10/02 Jeremy Bowers  use Apache::lonnet;
   use Apache::loncommon();
 package Apache::lonlogin;  use Apache::lonauth();
   use Apache::lonlocal;
 use strict;  use Apache::migrateuser();
 use Apache::Constants qw(:common);  use lib '/home/httpd/lib/perl/';
 use Apache::File ();  use LONCAPA;
 use Apache::lonnet();   
 use Apache::loncommon();  sub handler {
       my $r = shift;
 sub handler {  
     my $r = shift;      &Apache::loncommon::get_unprocessed_cgi
     $r->content_type('text/html');   (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
     &Apache::loncommon::no_cache($r);        $ENV{'REDIRECT_QUERY_STRING'}),
     $r->send_http_header;   ['interface','username','domain','firsturl','localpath','localres',
     return OK if $r->header_only;    'token','role','symb','iptoken']);
       if (!defined($env{'form.firsturl'})) {
           &Apache::lonacc::get_posted_cgi($r,['firsturl']);
     &Apache::loncommon::get_unprocessed_cgi      }
      ($ENV{'QUERY_STRING'}.'&'.$ENV{'request.querystring'},  
       ['interface','username','domain','firsturl','localpath','localres']);  # -- check if they are a migrating user
        if (defined($env{'form.token'})) {
 # ----------------------------------------------------------- Process Interface   return &Apache::migrateuser::handler($r);
     $ENV{'form.interface'}=~s/\W//g;      }
   
     my $textbrowsers=$r->dir_config('lonTextBrowsers');      &Apache::loncommon::no_cache($r);
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};      &Apache::lonlocal::get_language_handle($r);
           &Apache::loncommon::content_type($r,'text/html');
     foreach (split(/\:/,$textbrowsers)) {      $r->send_http_header;
  if ($httpbrowser=~/$_/i) {      return OK if $r->header_only;
     $ENV{'form.interface'}='textual';  
         }  
     }  # Are we re-routing?
       my $londocroot = $r->dir_config('lonDocRoot');
     my $fullgraph=($ENV{'form.interface'} ne 'textual');      if (-e "$londocroot/lon-status/reroute.txt") {
     my $port_to_use=$r->dir_config('lonhttpdPort');   &Apache::lonauth::reroute($r);
     if (!defined($port_to_use)) {   return OK;
  $port_to_use='8080';      }
     }  
     my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use.      $env{'form.firsturl'} =~ s/(`)/'/g;
                   $r->dir_config('lonIconsURL');  
     my $domain  = $r->dir_config('lonDefDomain');  # -------------------------------- Prevent users from attempting to login twice
     my $role    = $r->dir_config('lonRole');      my $handle = &Apache::lonnet::check_for_valid_session($r);
     my $loadlim = $r->dir_config('lonLoadLim');      if ($handle ne '') {
     my $servadm = $r->dir_config('lonAdmEMail');          my $lonidsdir=$r->dir_config('lonIDsDir');
     my $sysadm  = $r->dir_config('lonSysEMail');          if ($handle=~/^publicuser\_/) {
     my $lonhost = $r->dir_config('lonHostID');  # For "public user" - remove it, we apparently really want to login
     my $tabdir  = $r->dir_config('lonTabDir');      unlink($r->dir_config('lonIDsDir')."/$handle.id");
     my $include = $r->dir_config('lonIncludes');          } else {
     my $expire  = $r->dir_config('lonExpire');  # Indeed, a valid token is found
     my $version = $r->dir_config('lonVersion');              &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
       my $start_page =
 # --------------------------------------------- Default values for login fields          &Apache::loncommon::start_page('Already logged in');
       my $end_page =
     my $authusername=($ENV{'form.username'}?$ENV{'form.username'}:'');          &Apache::loncommon::end_page();
     my $authdomain=($ENV{'form.domain'}?$ENV{'form.domain'}:$domain);              my $dest = '/adm/roles';
               if ($env{'form.firsturl'} ne '') {
 # ---------------------------------------------------------- Determine own load                  $dest = $env{'form.firsturl'};
     my $loadavg;              }
     {      $r->print(
  my $loadfile=Apache::File->new('/proc/loadavg');                    $start_page
  $loadavg=<$loadfile>;                   .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
     }                   .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
     $loadavg =~ s/\s.*//g;                    '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
     my $loadpercent=100*$loadavg/$loadlim;                   .$end_page
     my $userloadpercent=&Apache::lonnet::userload();                   );
               return OK;
 # ------------------------------------------------------- Do the load balancing          }
     my $otherserver='http://'.$ENV{'SERVER_NAME'};      }
     my $firsturl=  
     ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'});  # ---------------------------------------------------- No valid token, continue
 # ---------------------------------------- Are we access server and overloaded?  
     if (($role eq 'access') &&  # ---------------------------- Not possible to really login to domain "public"
  (($userloadpercent>100.0)||($loadpercent>100.0))) {      if ($env{'form.domain'} eq 'public') {
         $otherserver=Apache::lonnet::spareserver($loadpercent,$userloadpercent);   $env{'form.domain'}='';
     }   $env{'form.username'}='';
       }
 # ----------------------------------------------------------- Get announcements  
     my $announcements=&Apache::lonnet::getannounce();  # ------ Is this page requested because /adm/migrateuser detected an IP change?
 # -------------------------------------------------------- Set login parameters      my %sessiondata;
       if ($env{'form.iptoken'}) {
     my @hexstr=('0','1','2','3','4','5','6','7',          %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
                 '8','9','a','b','c','d','e','f');          unless ($sessiondata{'sessionserver'}) {
     my $lkey='';              my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
     for (0..7) {              delete($env{'form.iptoken'});
         $lkey.=$hexstr[rand(15)];          }
     }      }
   # ----------------------------------------------------------- Process Interface
     my $ukey='';      $env{'form.interface'}=~s/\W//g;
     for (0..7) {  
         $ukey.=$hexstr[rand(15)];      (undef,undef,undef,undef,undef,undef,my $clientmobile) =
     }          &Apache::loncommon::decode_user_agent();
   
     my $lextkey=hex($lkey);      my $iconpath=
     if ($lextkey>2147483647) { $lextkey-=4294967296; }   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
   
     my $uextkey=hex($ukey);      my $lonhost = $r->dir_config('lonHostID');
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      my $domain = &Apache::lonnet::default_login_domain();
       my $defdom = $domain;
 # -------------------------------------------------------- Store away log token      if ($lonhost ne '') {
     my $logtoken=Apache::lonnet::reply(          unless ($sessiondata{'sessionserver'}) {
        'tmpput:'.$ukey.$lkey.'&'.$firsturl,              my $redirect = &check_loginvia($domain,$lonhost);
        $lonhost);              if ($redirect) {
                   $r->print($redirect);
 # ------------------- If we cannot talk to ourselves, we are in serious trouble                  return OK;
               }
     if ($logtoken eq 'con_lost') {          }
         my $spares='';      }
         foreach (keys %Apache::lonnet::hostname) {  
             if ($_ ne $lonhost) {      if (($sessiondata{'domain'}) &&
                $spares.='<br /><a href="http://'.$Apache::lonnet::hostname{$_}.          (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
  '/adm/login?domain='.$authdomain.'">'.          $domain=$sessiondata{'domain'};
                  $Apache::lonnet::hostname{$_}.'</a>';      } elsif (($env{'form.domain'}) &&
                if ($Apache::lonnet::spareid{$_}) {   (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
    $spares.=' (preferred)';   $domain=$env{'form.domain'};
                }      }
    }  
         }      my $role    = $r->dir_config('lonRole');
  $r->print(<<ENDTROUBLE);      my $loadlim = $r->dir_config('lonLoadLim');
 <html>      my $uloadlim= $r->dir_config('lonUserLoadLim');
 <head><title>The LearningOnline Network with CAPA</title></head>      my $servadm = $r->dir_config('lonAdmEMail');
 <body bgcolor="#FFFFFF">      my $tabdir  = $r->dir_config('lonTabDir');
 <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />      my $include = $r->dir_config('lonIncludes');
 <h3>This LON-CAPA server is temporarily not available for login</h3>      my $expire  = $r->dir_config('lonExpire');
 <p>Please attempt to login to one of the following servers:</p>$spares      my $version = $r->dir_config('lonVersion');
 <p>If the problem persists, please contact <tt>$servadm</tt>.</p>      my $host_name = &Apache::lonnet::hostname($lonhost);
 </body>  
 </html>  # --------------------------------------------- Default values for login fields
 ENDTROUBLE     
         return OK;      my ($authusername,$authdomain);
     }      if ($sessiondata{'username'}) {
           $authusername=$sessiondata{'username'};
 # ----------------------------------------------- Apparently we are in business      } else {
           $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
     my $domainlogo=&Apache::loncommon::domainlogo();          $authusername=($env{'form.username'}?$env{'form.username'}:'');
     $servadm=~s/\,/\<br \/\>/g;      }
     $sysadm=~s/\,/\<br \/\>/g;      if ($sessiondata{'domain'}) {
           $authdomain=$sessiondata{'domain'};
 # --------------------------------------------------- Print login screen header      } else {
     $r->print(<<ENDHEADER);          $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
 <html>          $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
 <head>      }
 <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" />  
 <title>The LearningOnline Network with CAPA Login</title>  # ---------------------------------------------------------- Determine own load
 </head>      my $loadavg;
 ENDHEADER      {
 # ---------------------------------------------------- Serve out DES JavaScript   my $loadfile=Apache::File->new('/proc/loadavg');
     {   $loadavg=<$loadfile>;
  my $jsh=Apache::File->new($include."/londes.js");      }
         $r->print(<$jsh>);      $loadavg =~ s/\s.*//g;
     }  
       my ($loadpercent,$userloadpercent);
 # ----------------------------------------------------------- Front page design      if ($loadlim) {
     my $pgbg=          $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg'):'#FFFFFF');      }
     my $font=      if ($uloadlim) {
       ($fullgraph?&Apache::loncommon::designparm('login.font'):'#000000');          $userloadpercent=&Apache::lonnet::userload();
     my $link=      }
       ($fullgraph?&Apache::loncommon::designparm('login.link'):'#0000FF');  
     my $vlink=      my $firsturl=
       ($fullgraph?&Apache::loncommon::designparm('login.vlink'):'#0000FF');      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
     my $alink=&Apache::loncommon::designparm('login.alink');  
     my $mainbg=  # ----------------------------------------------------------- Get announcements
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg'):'#FFFFFF');      my $announcements=&Apache::lonnet::getannounce();
     my $sidebg=  # -------------------------------------------------------- Set login parameters
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg'):'#FFFFFF');  
     my $logo=&Apache::loncommon::designparm('login.logo');      my @hexstr=('0','1','2','3','4','5','6','7',
     my $img=&Apache::loncommon::designparm('login.img');                  '8','9','a','b','c','d','e','f');
       my $lkey='';
       for (0..7) {
 # ---------------------------------------------------------- Serve rest of page          $lkey.=$hexstr[rand(15)];
     $r->print(<<ENDSCRIPT);      }
   
 <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink"      my $ukey='';
   topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>      for (0..7) {
           $ukey.=$hexstr[rand(15)];
  <script language="JavaScript">      }
     function send()  
     {      my $lextkey=hex($lkey);
  this.document.server.elements.uname.value      if ($lextkey>2147483647) { $lextkey-=4294967296; }
        =this.document.client.elements.uname.value;  
       my $uextkey=hex($ukey);
         this.document.server.elements.udom.value      if ($uextkey>2147483647) { $uextkey-=4294967296; }
        =this.document.client.elements.udom.value;  
   # -------------------------------------------------------- Store away log token
         this.document.server.elements.imagesuppress.value      my $tokenextras;
        =this.document.client.elements.imagesuppress.checked;      if ($env{'form.role'}) {
           $tokenextras = '&role='.&escape($env{'form.role'});
         this.document.server.elements.embedsuppress.value      }
        =this.document.client.elements.embedsuppress.checked;      if ($env{'form.symb'}) {
           if (!$tokenextras) {
         this.document.server.elements.appletsuppress.value              $tokenextras = '&';
        =this.document.client.elements.appletsuppress.checked;          }
           $tokenextras .= '&symb='.&escape($env{'form.symb'});
         this.document.server.elements.fontenhance.value      }
        =this.document.client.elements.fontenhance.checked;      if ($env{'form.iptoken'}) {
           if (!$tokenextras) {
         this.document.server.elements.blackwhite.value              $tokenextras = '&&';
        =this.document.client.elements.blackwhite.checked;          }
           $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
         this.document.server.elements.remember.value      }
        =this.document.client.elements.remember.checked;      my $logtoken=Apache::lonnet::reply(
          'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
         uextkey=this.document.client.elements.uextkey.value;         $lonhost);
         lextkey=this.document.client.elements.lextkey.value;  
         initkeys();  # -- If we cannot talk to ourselves, or hostID does not map to a hostname
   #    we are in serious trouble
         this.document.server.elements.upass.value  
     =crypted(this.document.client.elements.upass.value);      if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
           if ($logtoken eq 'no_such_host') {
         this.document.server.submit();              &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
  return false;          }
     }          my $spares='';
  </script>   my $last;
 ENDSCRIPT          foreach my $hostid (sort
       {
     if ($fullgraph) {   &Apache::lonnet::hostname($a) cmp
  $r->print(      &Apache::lonnet::hostname($b);
   '<table width="100%" cellpadding=0 cellspacing=0 border=0>');      }
     }      keys(%Apache::lonnet::spareid)) {
               next if ($hostid eq $lonhost);
     $r->print(<<ENDSERVERFORM);      my $hostname = &Apache::lonnet::hostname($hostid);
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">      next if (($last eq $hostname) || ($hostname eq ''));
    <input type="hidden" name="logtoken" value="$logtoken" />              $spares.='<br /><font size="+1"><a href="http://'.
    <input type="hidden" name="serverid" value="$lonhost" />                  $hostname.
    <input type="hidden" name="interface" value="$ENV{'form.interface'}" />                  '/adm/login?domain='.$authdomain.'">'.
    <input type="hidden" name="uname" value="" />                  $hostname.'</a>'.
    <input type="hidden" name="upass" value="" />                  ' '.&mt('(preferred)').'</font>'.$/;
    <input type="hidden" name="udom" value="" />      $last=$hostname;
    <input type="hidden" name="imagesuppress"  value="" />          }
    <input type="hidden" name="appletsuppress"  value="" />          if ($spares) {
    <input type="hidden" name="embedsuppress"  value="" />              $spares.= '<br />';
    <input type="hidden" name="fontenhance"  value="" />          }
    <input type="hidden" name="blackwhite"  value="" />          my %all_hostnames = &Apache::lonnet::all_hostnames();
    <input type="hidden" name="remember"  value="" />          foreach my $hostid (sort
    <input type="hidden" name="localpath" value="$ENV{'form.localpath'}" />      {
    <input type="hidden" name="localres" value="$ENV{'form.localres'}" />   &Apache::lonnet::hostname($a) cmp
   </form>      &Apache::lonnet::hostname($b);
 ENDSERVERFORM      }
     if ($fullgraph) { $r->print(<<ENDTOP);      keys(%all_hostnames)) {
   <!-- The LON-CAPA Header -->              next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
   <tr>              my $hostname = &Apache::lonnet::hostname($hostid);
               next if (($last eq $hostname) || ($hostname eq ''));
    <!-- Row 1 Columns 2-4 -->              $spares.='<br /><a href="http://'.
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td>               $hostname.
   </tr>               '/adm/login?domain='.$authdomain.'">'.
                $hostname.'</a>';
   <!-- The gray bar that starts the two table frames -->              $last=$hostname;
   <tr>           }
            $r->print(
    <!-- Row 2 Column 1 -->     '<html>'
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>    .'<head><title>'
     .&mt('The LearningOnline Network with CAPA')
    <!-- Row 2 Column 2 -->    .'</title></head>'
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>    .'<body bgcolor="#FFFFFF">'
     .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
    <!-- Row 2 Column 3 -->    .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>    .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
           if ($spares) {
    <!-- Row 2 Column 4 -->              $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>                       .'</p>'
   </tr>                       .$spares);
   <tr>          }
              $r->print('</body>'
    <!-- A cell that will hold the 'access' and 'about' buttons -->                   .'</html>'
    <!-- Row 3 Column 1 -->          );
    <td valign="top" height=60 align="center" bgcolor="$sidebg">          return OK;
     <a href="/adm/login?interface=textual"><img src="$iconpath/accessbutton.gif" border=0 alt="Accessibility Options" /></a>      }
     <br />  
     <a href="/adm/about.html"><img src="$iconpath/aboutlon.gif" border=0 alt="About LON-CAPA" /></a>  # ----------------------------------------------- Apparently we are in business
    </td>      $servadm=~s/\,/\<br \/\>/g;
   
    <!-- The shaded space between the two main columns -->  # ----------------------------------------------------------- Front page design
    <!-- Row 3 Column 2 -->      my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>      my $font=&Apache::loncommon::designparm('login.font',$domain);
       my $link=&Apache::loncommon::designparm('login.link',$domain);
    <!-- The right main column holding the large LON-CAPA logo-->      my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
    <!-- Rows 3-4 Column 3 -->      my $alink=&Apache::loncommon::designparm('login.alink',$domain);
    <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">      my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
     <center>      my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
      <img src="$logo" alt="" />      my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
     </center>      my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
    </td>      my $logo=&Apache::loncommon::designparm('login.logo',$domain);
       my $img=&Apache::loncommon::designparm('login.img',$domain);
    <!-- Row 3 Column 4 -->      my $domainlogo=&Apache::loncommon::domainlogo($domain);
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>      my $showbanner = 1;
   </tr>      my $showmainlogo = 1;
   <tr>      if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
           $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
    <!-- The entry form -->      }
    <!-- Row 4 Column 1 -->      if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
    <td align="center" valign="middle" bgcolor="$sidebg">          $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
 ENDTOP      }
 } else {      my $showadminmail;
     $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements);      my @possdoms = &Apache::lonnet::current_machine_domains();
 }      if (grep(/^\Q$domain\E$/,@possdoms)) {
     $r->print('<form name="client" onsubmit="return(send())">');          $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
     unless ($fullgraph) {      }
         $r->print(<<ENDACCESSOPTIONS);      my $showcoursecat =
 <h3>Select Accessibility Options</h3>          &Apache::loncommon::designparm('login.coursecatalog',$domain);
 <input type="checkbox" name="imagesuppress" /> Suppress rendering of images<br />      my $shownewuserlink =
 <input type="checkbox" name="appletsuppress" /> Suppress Java applets<br />          &Apache::loncommon::designparm('login.newuser',$domain);
 <input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia<br />      my $showhelpdesk =
 <input type="checkbox" name="fontenhance" /> Increase font size<br />          &Apache::loncommon::designparm('login.helpdesk',$domain);
 <input type="checkbox" name="blackwhite" /> Switch to black and white mode<br />      my $now=time;
 <p>If you have accessibility needs that are not addressed by this interface,       my $js = (<<ENDSCRIPT);
 please  
 contact the system administrator at <tt>$sysadm</tt>.</p><br />  <script type="text/javascript" language="JavaScript">
 <input type="checkbox" name="remember" /> Remember these settings for next login<hr />  // <![CDATA[
 ENDACCESSOPTIONS  function send()
 } else {  {
     $r->print(<<ENDNOOPT);  this.document.server.elements.uname.value
 <input type="hidden" name="imagesuppress"  value="" />  =this.document.client.elements.uname.value;
 <input type="hidden" name="embedsuppress"  value="" />  
 <input type="hidden" name="appletsuppress"  value="" />  this.document.server.elements.udom.value
 <input type="hidden" name="fontenhance"  value="" />  =this.document.client.elements.udom.value;
 <input type="hidden" name="blackwhite"  value="" />  
 <input type="hidden" name="remember"  value="" />  uextkey=this.document.client.elements.uextkey.value;
 ENDNOOPT  lextkey=this.document.client.elements.lextkey.value;
 }  initkeys();
     $r->print(<<ENDLOGIN);  
      <input type="hidden" name="lextkey" value="$lextkey">  this.document.server.elements.upass0.value
      <input type="hidden" name="uextkey" value="$uextkey">      =this.document.client.elements.upass$now.value.substr(0,15);
   this.document.server.elements.upass1.value
      <!-- Start the sub-table for text and input alignment -->      =this.document.client.elements.upass$now.value.substr(15,15);
      <table border=0 cellspacing=0 cellpadding=0>  this.document.server.elements.upass2.value
       <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/userauthentication.gif" alt="User Authentication" /></td></tr>      =this.document.client.elements.upass$now.value.substr(30,15);
       <tr>  
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;User Name:</b></font></td>  if(this.document.server.action.substr(0,5) === 'http:'){
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>      for (var idx in [1,2,3]){
       </tr>          this.document.server.elements['upass' + idx].value =
       <tr>              crypted(this.document.server.elements['upass' + idx].value);
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;Password:</b></font></td>      }
        <td bgcolor="$mainbg"><input type="password" name="upass" size="10" /></td>  }
       </tr>  
       <tr>  this.document.client.elements.uname.value='';
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;Domain:</b></font></td>  this.document.client.elements.upass$now.value='';
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>  
       </tr>  this.document.server.submit();
       <tr>  return false;
        <td bgcolor="$mainbg">&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">Help</a></td>  }
        <td bgcolor="$mainbg" valign="bottom" align="center">  
         <br />  function enableInput() {
         <input type="submit" value="Log In" />      this.document.client.elements.upass$now.removeAttribute("readOnly");
        </td>      this.document.client.elements.uname.removeAttribute("readOnly");
       </tr>      this.document.client.elements.udom.removeAttribute("readOnly");
      </table>      return;
      <!-- End sub-table -->  }
     </form>  
 ENDLOGIN  // ]]>
     if ($fullgraph) {  </script>
  $r->print(<<ENDDOCUMENT);  
    </td>  ENDSCRIPT
   
    <!-- Row 4 Column 2 -->  # --------------------------------------------------- Print login screen header
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  
       my %add_entries = (
    <!-- Row 4 Column 3 -->         bgcolor      => "$mainbg",
 <td bgcolor="$mainbg">$announcements</td>         text         => "$font",
          link         => "$link",
    <!-- Row 4 Column 4 -->         vlink        => "$vlink",
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>         alink        => "$alink",
   </tr>                 onload       => 'javascript:enableInput();',);
   <tr>  
       my ($lonhost_in_use,$headextra);
    <!-- Row 5 Column 1 -->      my @hosts = &Apache::lonnet::current_machine_ids();
    <td bgcolor="$sidebg" valign="middle" align="left">      my $lonhost_in_use = $lonhost;
      <br />      if (@hosts > 1) {
      <table border=0 cellspacing=0 cellpadding=0>          foreach my $hostid (@hosts) {
       <tr>              if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
        <td bgcolor="$sidebg" align="left" valign="top">                  $lonhost_in_use = $hostid;
         <small><b>&nbsp;&nbsp;&nbsp;Domain:&nbsp;</b></small>                  last;
        </td>              }
        <td bgcolor="$sidebg" align="left" valign="top">          }
         <small><tt>&nbsp;$domain</tt></small>      }
        </td>      my %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
       </tr>      my $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
       <tr>      my $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
        <td bgcolor="$sidebg" align="left" valign="top">      if ($headextra) {
         <small><b>&nbsp;&nbsp;&nbsp;Server:&nbsp;</b></small>          my $omitextra;
        </td>          if ($headextra_exempt ne '') {
        <td bgcolor="$sidebg" align="left" valign="top">              my @exempt = split(',',$headextra_exempt);
         <small><tt>&nbsp;$lonhost ($role)</tt></small>              my $ip = $ENV{'REMOTE_ADDR'};
        </td>              if (grep(/^\Q$ip\E$/,@exempt)) {
       </tr>                  $omitextra = 1;
       <tr>              }
        <td bgcolor="$sidebg" align="left" valign="top">          }
         <small><b>&nbsp;&nbsp;&nbsp;Load:&nbsp;</b></small>          unless ($omitextra) {
        </td>              my $confname = $defdom.'-domainconfig';
        <td bgcolor="$sidebg" align="left" valign="top">              if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
         <small><tt>&nbsp;$loadpercent percent</tt></small>                  my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
        </td>                  unless ($extra eq '-1') {
       </tr>                      $js .= "\n".$extra."\n";
       <tr>                  }
        <td bgcolor="$sidebg" align="left" valign="top">              }
         <small><b>&nbsp;&nbsp;&nbsp;User&nbsp;Load:&nbsp;</b></small>          }
        </td>      }
        <td bgcolor="$sidebg" align="left" valign="top">  
         <small><tt>&nbsp;$userloadpercent percent</tt></small>      $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
        </td>         { 'redirect'       => [$expire,'/adm/roles'],
       </tr>   'add_entries' => \%add_entries,
      </table>   'only_body'   => 1,}));
      <br />  
     <small>  # ----------------------------------------------------------------------- Texts
      <b>&nbsp;&nbsp;&nbsp;System Administration:</b><br />  
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$sysadm</tt><br />      my %lt=&Apache::lonlocal::texthash(
      <b>&nbsp;&nbsp;&nbsp;Server Administration:</b><br />            'un'       => 'Username',
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$servadm</tt><br />&nbsp;<br />            'pw'       => 'Password',
      &nbsp;&nbsp;&nbsp;$version            'dom'      => 'Domain',
     </small>            'perc'     => 'percent',
    </td>            'load'     => 'Server Load',
             'userload' => 'User Load',
    <!-- Row 5 Column 2 -->            'catalog'  => 'Course/Community Catalog',
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>            'log'      => 'Log in',
             'help'     => 'Log-in Help',
    <!-- Row 5 Column 3 -->            'serv'     => 'Server',
    <td width="100%" valign="bottom" bgcolor="$mainbg">            'servadm'  => 'Server Administration',
 $domainlogo            'helpdesk' => 'Contact Helpdesk',
 </td>            'forgotpw' => 'Forgot password?',
             'newuser'  => 'New User?',
    <!-- Row 5 Column 4 -->         );
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>  # -------------------------------------------------- Change password field name
   </tr>  
   <tr>      my $forgotpw = &forgotpwdisplay(%lt);
       $forgotpw .= '<br />' if $forgotpw;
    <!-- Row 6 Column 1 -->      my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
    <td bgcolor="$sidebg">&nbsp;</td>      if ($loginhelp) {
           $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
    <!-- Row 6 Column 2 -->      }
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>  
   # ---------------------------------------------------- Serve out DES JavaScript
    <!-- Row 6 Column 3 -->      {
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>      my $jsh=Apache::File->new($include."/londes.js");
       $r->print(<$jsh>);
    <!-- Row 6 Column 4 -->      }
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>  # ---------------------------------------------------------- Serve rest of page
   </tr>  
  </table>      $r->print(
       '<div class="LC_Box"'
 <script>     .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
 // the if prevents the script error if the browser can't handle this  );
 if ( document.client.uname ) { document.client.uname.focus(); }  
 </script>      $r->print(<<ENDSERVERFORM);
   <form name="server" action="/adm/authenticate" method="post" target="_top">
 ENDDOCUMENT     <input type="hidden" name="logtoken" value="$logtoken" />
 }     <input type="hidden" name="serverid" value="$lonhost" />
     $r->print('</body></html>');     <input type="hidden" name="uname" value="" />
     return OK;     <input type="hidden" name="upass0" value="" />
 }      <input type="hidden" name="upass1" value="" />
      <input type="hidden" name="upass2" value="" />
 1;     <input type="hidden" name="udom" value="" />
 __END__     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
      <input type="hidden" name="localres" value="$env{'form.localres'}" />
     </form>
   ENDSERVERFORM
       my $coursecatalog;
       if (($showcoursecat eq '') || ($showcoursecat)) {
           $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
       }
       my $newuserlink;
       if ($shownewuserlink) {
           $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
       }
       my $logintitle =
           '<h2 class="LC_hcell"'
          .' style="background:'.$loginbox_header_bgcol.';'
          .' color:'.$loginbox_header_textcol.'">'
          .$lt{'log'}
          .'</h2>';
   
       my $noscript_warning='<noscript><span class="LC_warning"><b>'
                           .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
                           .'</b></span></noscript>';
       my $helpdeskscript;
       my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
                                          $authdomain,\$helpdeskscript,
                                          $showhelpdesk,\@possdoms);
   
       my $mobileargs;
       if ($clientmobile) {
           $mobileargs = 'autocapitalize="off" autocorrect="off"';
       }
       my $loginform=(<<LFORM);
   <form name="client" action="" onsubmit="return(send())">
     <input type="hidden" name="lextkey" value="$lextkey" />
     <input type="hidden" name="uextkey" value="$uextkey" />
     <b><label for="uname">$lt{'un'}</label>:</b><br />
     <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
     <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
     <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
     <b><label for="udom">$lt{'dom'}</label>:</b><br />
     <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
     <input type="submit" value="$lt{'log'}" />
   </form>
   LFORM
   
       if ($showbanner) {
           $r->print(<<HEADER);
   <!-- The LON-CAPA Header -->
   <div style="background:$pgbg;margin:0;width:100%;">
     <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
   </div>
   HEADER
       }
       $r->print(<<ENDTOP);
   <div style="float:left;margin-top:0;">
   <div class="LC_Box" style="background:$loginbox_bg;">
     $logintitle
     $loginform
     $noscript_warning
   </div>
    
   <div class="LC_Box" style="padding-top: 10px;">
     $loginhelp
     $forgotpw
     $contactblock
     $newuserlink
     $coursecatalog
   </div>
   </div>
   
   <div>
   ENDTOP
       if ($showmainlogo) {
           $r->print(' <img src="'.$logo.'" alt="" />'."\n");
       }
   $r->print(<<ENDTOP);
   $announcements
   </div>
   <hr style="clear:both;" />
   ENDTOP
       my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
       $domainrow = <<"END";
         <tr>
          <td  align="left" valign="top">
           <small><b>$lt{'dom'}:&nbsp;</b></small>
          </td>
          <td  align="left" valign="top">
           <small><tt>&nbsp;$domain</tt></small>
          </td>
         </tr>
   END
       $serverrow = <<"END";
         <tr>
          <td  align="left" valign="top">
           <small><b>$lt{'serv'}:&nbsp;</b></small>
          </td>
          <td align="left" valign="top">
           <small><tt>&nbsp;$lonhost ($role)</tt></small>
          </td>
         </tr>
   END
       if ($loadlim) {
           $loadrow = <<"END";
         <tr>
          <td align="left" valign="top">
           <small><b>$lt{'load'}:&nbsp;</b></small>
          </td>
          <td align="left" valign="top">
           <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
          </td>
         </tr>
   END
       }
       if ($uloadlim) {
           $userloadrow = <<"END";
         <tr>
          <td align="left" valign="top">
           <small><b>$lt{'userload'}:&nbsp;</b></small>
          </td>
          <td align="left" valign="top">
           <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
          </td>
         </tr>
   END
       }
       if (($version ne '') && ($version ne '<!-- VERSION -->')) {
           $versionrow = <<"END";
         <tr>
          <td colspan="2" align="left">
           <small>$version</small>
          </td>
         </tr>
   END
       }
   
       $r->print(<<ENDDOCUMENT);
       <div style="float: left;">
        <table border="0" cellspacing="0" cellpadding="0">
   $domainrow
   $serverrow
   $loadrow    
   $userloadrow
   $versionrow
        </table>
       </div>
       <div style="float: right;">
       $domainlogo
       </div>
       <br style="clear:both;" />
    </div>
   
   <script type="text/javascript">
   // <![CDATA[
   // the if prevents the script error if the browser can not handle this
   if ( document.client.uname ) { document.client.uname.focus(); }
   // ]]>
   </script>
   $helpdeskscript
   
   ENDDOCUMENT
       my %endargs = ( 'noredirectlink' => 1, );
       $r->print(&Apache::loncommon::end_page(\%endargs));
       return OK;
   }
   
   sub check_loginvia {
       my ($domain,$lonhost) = @_;
       if ($domain eq '' || $lonhost eq '') {
           return;
       }
       my %domconfhash = &Apache::loncommon::get_domainconf($domain);
       my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
       my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
       my $output;
       if ($loginvia ne '') {
           my $noredirect;
           my $ip = $ENV{'REMOTE_ADDR'};
           if ($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.1.45  
changed lines
  Added in v.1.163

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.