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Diff for /loncom/auth/lonlogin.pm between versions 1.39 and 1.126

version 1.39, 2003/04/02 14:57:32 version 1.126, 2009/10/06 21:58:30
Line 25 Line 25
 #  #
 # 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,  
 # 1/17/01 Gerd Kortemeyer  
 #  
 # 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole  
 #   
 # 7/10/02 Jeremy Bowers  
   
 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::lonlocal;
   use Apache::migrateuser();
   use lib '/home/httpd/lib/perl/';
   use LONCAPA;
    
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     $r->content_type('text/html');  
       &Apache::loncommon::get_unprocessed_cgi
    (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
         $ENV{'REDIRECT_QUERY_STRING'}),
    ['interface','username','domain','firsturl','localpath','localres',
     'token','role','symb']);
       if (!defined($env{'form.firsturl'})) {
           &Apache::lonacc::get_posted_cgi($r,['firsturl']);
       }
   
   # -- check if they are a migrating user
       if (defined($env{'form.token'})) {
    return &Apache::migrateuser::handler($r);
       }
   
     &Apache::loncommon::no_cache($r);      &Apache::loncommon::no_cache($r);
       &Apache::lonlocal::get_language_handle($r);
       &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
   
   
     &Apache::loncommon::get_unprocessed_cgi  # Are we re-routing?
      ($ENV{'QUERY_STRING'}.'&'.$ENV{'request.querystring'},      if (-e '/home/httpd/html/lon-status/reroute.txt') {
       ['interface','username','domain','firsturl']);   &Apache::lonauth::reroute($r);
     return OK;
       }
   
   
   # -------------------------------- Prevent users from attempting to login twice
       my $handle = &Apache::lonnet::check_for_valid_session($r);
       if ($handle=~/^publicuser\_/) {
   # For "public user" - remove it, we apparently really want to login
    unlink($r->dir_config('lonIDsDir')."/$handle.id");
       } elsif ($handle ne '') {
   # Indeed, a valid token is found
    my $start_page = 
       &Apache::loncommon::start_page('Already logged in');
    my $end_page = 
       &Apache::loncommon::end_page();
           my $dest = '/adm/roles';
           if ($env{'form.firsturl'} ne '') {
               $dest = $env{'form.firsturl'}; 
           }
    $r->print(
                     $start_page
                    .'<h1>'.&mt('You are already logged in!').'</h1>'
                    .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
                     '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
                    .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
                    .$end_page
                    );
           return OK;
       }
   
   # ---------------------------------------------------- No valid token, continue
   
    # ---------------------------- Not possible to really login to domain "public"
       if ($env{'form.domain'} eq 'public') {
    $env{'form.domain'}='';
    $env{'form.username'}='';
       }
 # ----------------------------------------------------------- Process Interface  # ----------------------------------------------------------- Process Interface
     $ENV{'form.interface'}=~s/\W//g;      $env{'form.interface'}=~s/\W//g;
   
     my $textbrowsers=$r->dir_config('lonTextBrowsers');  
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};      my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
       
     foreach (split(/\:/,$textbrowsers)) {      my $iconpath= 
  if ($httpbrowser=~/$_/i) {   &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
     $ENV{'form.interface'}='textual';  
       my $lonhost = $r->dir_config('lonHostID');
       my $domain = &Apache::lonnet::default_login_domain();
       my %domconfig = &Apache::loncommon::get_domainconf($domain);
       if ($lonhost ne '') {
           if (ref($domconfig{login}) eq 'HASH') {
               if (ref($domconfig{login}{loginvia}) eq 'HASH') {
                   if ($domconfig{login}{loginvia}{$lonhost}) {
                       my $loginvia = $domconfig{login}{loginvia}{$lonhost};
                       my %servers = &Apache::lonnet::get_servers($domain);
                       if (($servers{$loginvia} ne '') && ($loginvia ne $lonhost)) {
                           $r->print(&redirect_page($loginvia));
                           return OK;
                       }
                   }
               }
         }          }
     }      }
   
     my $fullgraph=($ENV{'form.interface'} ne 'textual');      if (($env{'form.domain'}) && 
    (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
     my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':8080'.   $domain=$env{'form.domain'};
                   $r->dir_config('lonIconsURL');      }
     my $domain  = $r->dir_config('lonDefDomain');  
     my $role    = $r->dir_config('lonRole');      my $role    = $r->dir_config('lonRole');
     my $loadlim = $r->dir_config('lonLoadLim');      my $loadlim = $r->dir_config('lonLoadLim');
     my $servadm = $r->dir_config('lonAdmEMail');      my $servadm = $r->dir_config('lonAdmEMail');
     my $sysadm  = $r->dir_config('lonSysEMail');  
     my $lonhost = $r->dir_config('lonHostID');  
     my $tabdir  = $r->dir_config('lonTabDir');      my $tabdir  = $r->dir_config('lonTabDir');
     my $include = $r->dir_config('lonIncludes');      my $include = $r->dir_config('lonIncludes');
     my $expire  = $r->dir_config('lonExpire');      my $expire  = $r->dir_config('lonExpire');
       my $version = $r->dir_config('lonVersion');
       my $host_name = &Apache::lonnet::hostname($lonhost);
   
 # --------------------------------------------- Default values for login fields  # --------------------------------------------- Default values for login fields
   
     my $authusername=($ENV{'form.username'}?$ENV{'form.username'}:'');      my $authusername=($env{'form.username'}?$env{'form.username'}:'');
     my $authdomain=($ENV{'form.domain'}?$ENV{'form.domain'}:$domain);      my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
   
 # ---------------------------------------------------------- Determine own load  # ---------------------------------------------------------- Determine own load
     my $loadavg;      my $loadavg;
    {      {
        my $loadfile=Apache::File->new('/proc/loadavg');   my $loadfile=Apache::File->new('/proc/loadavg');
        $loadavg=<$loadfile>;   $loadavg=<$loadfile>;
    }      }
     $loadavg =~ s/\s.*//g;      $loadavg =~ s/\s.*//g;
     my $loadpercent=100*$loadavg/$loadlim;      my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
       my $userloadpercent=&Apache::lonnet::userload();
   
 # ------------------------------------------------------- Do the load balancing  # ------------------------------------------------------- Do the load balancing
     my $otherserver='http://'.$ENV{'SERVER_NAME'};      my $otherserver= &Apache::lonnet::absolute_url($host_name);
     my $firsturl=      my $firsturl=
     ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'});      ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
 # ---------------------------------------- Are we access server and overloaded?  # ---------------------------------------------------------- Are we overloaded?
     if (($role eq 'access') && ($loadpercent>100.0)) {      if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
         $otherserver=Apache::lonnet::spareserver($loadpercent);          my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
    if ($unloaded) { $otherserver=$unloaded; }
     }      }
   
   # ----------------------------------------------------------- Get announcements
       my $announcements=&Apache::lonnet::getannounce();
 # -------------------------------------------------------- Set login parameters  # -------------------------------------------------------- Set login parameters
   
     my @hexstr=('0','1','2','3','4','5','6','7',      my @hexstr=('0','1','2','3','4','5','6','7',
Line 123  sub handler { Line 190  sub handler {
     if ($uextkey>2147483647) { $uextkey-=4294967296; }      if ($uextkey>2147483647) { $uextkey-=4294967296; }
   
 # -------------------------------------------------------- Store away log token  # -------------------------------------------------------- Store away log token
       my $tokenextras;
       if ($env{'form.role'}) {
           $tokenextras = '&role='.&escape($env{'form.role'});
       }
       if ($env{'form.symb'}) {
           if (!$tokenextras) {
               $tokenextras = '&';
           }
           $tokenextras .= '&symb='.&escape($env{'form.symb'});
       }
     my $logtoken=Apache::lonnet::reply(      my $logtoken=Apache::lonnet::reply(
        'tmpput:'.$ukey.$lkey.'&'.$firsturl,         'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
        $lonhost);         $lonhost);
   
 # ------------------- If we cannot talk to ourselves, we are in serious trouble  # ------------------- If we cannot talk to ourselves, we are in serious trouble
   
     if ($logtoken eq 'con_lost') {      if ($logtoken eq 'con_lost') {
         my $spares='';          my $spares='';
         foreach (keys %Apache::lonnet::hostname) {   my $last;
             if ($_ ne $lonhost) {          foreach my $hostid (sort
                $spares.='<br /><a href="http://'.$Apache::lonnet::hostname{$_}.      {
  '/adm/login?domain='.$authdomain.'">'.   &Apache::lonnet::hostname($a) cmp
                  $Apache::lonnet::hostname{$_}.'</a>';      &Apache::lonnet::hostname($b);
                if ($Apache::lonnet::spareid{$_}) {      }
    $spares.=' (preferred)';      keys(%Apache::lonnet::spareid)) {
                }              next if ($hostid eq $lonhost);
    }      my $hostname = &Apache::lonnet::hostname($hostid);
       next if ($last eq $hostname);
               $spares.='<br /><font size="+1"><a href="http://'.
                   $hostname.
                   '/adm/login?domain='.$authdomain.'">'.
                   $hostname.'</a>'.
                   ' '.&mt('(preferred)').'</font>'.$/;
       $last=$hostname;
         }          }
  $r->print(<<ENDTROUBLE);  $spares.= '<br />';
 <html>  my %all_hostnames = &Apache::lonnet::all_hostnames();
 <head><title>The LearningOnline Network with CAPA</title></head>  foreach my $hostid (sort
 <body bgcolor="#FFFFFF">      {
 <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />   &Apache::lonnet::hostname($a) cmp
 <h3>This LON-CAPA server is temporarily not available for login</h3>      &Apache::lonnet::hostname($b);
 <p>Please attempt to login to one of the following servers:</p>$spares      }
 <p>If the problem persists, please contact <tt>$servadm</tt>.</p>      keys(%all_hostnames)) {
 </body>      next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
 </html>      my $hostname = &Apache::lonnet::hostname($hostid);
 ENDTROUBLE      next if ($last eq $hostname);
         return OK;      $spares.='<br /><a href="http://'.
     }   $hostname.
    '/adm/login?domain='.$authdomain.'">'.
    $hostname.'</a>';
       $last=$hostname;
   }
   $r->print(
      '<html>'
     .'<head><title>'
     .&mt('The LearningOnline Network with CAPA')
     .'</title></head>'
     .'<body bgcolor="#FFFFFF">'
     .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
     .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
     .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'
     .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'
     .$spares
     .'</body>'
     .'</html>'
   );
   return OK;
   }
   
 # ----------------------------------------------- Apparently we are in business  # ----------------------------------------------- Apparently we are in business
   $servadm=~s/\,/\<br \/\>/g;
     my $domainlogo=&Apache::loncommon::domainlogo();  
     $servadm=~s/\,/\<br \/\>/g;  
     $sysadm=~s/\,/\<br \/\>/g;  
   
 # --------------------------------------------------- Print login screen header  
     $r->print(<<ENDHEADER);  
 <html>  
 <head>  
 <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" />  
 <title>The LearningOnline Network with CAPA Login</title>  
 </head>  
 ENDHEADER  
 # ---------------------------------------------------- Serve out DES JavaScript  
     {  
  my $jsh=Apache::File->new($include."/londes.js");  
         $r->print(<$jsh>);  
     }  
   
 # ----------------------------------------------------------- Front page design  # ----------------------------------------------------------- Front page design
     my $pgbg=  my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
       ($fullgraph?&Apache::loncommon::designparm('login.pgbg'):'#FFFFFF');  my $font=&Apache::loncommon::designparm('login.font',$domain);
     my $font=  my $link=&Apache::loncommon::designparm('login.link',$domain);
       ($fullgraph?&Apache::loncommon::designparm('login.font'):'#000000');  my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
     my $link=  my $alink=&Apache::loncommon::designparm('login.alink',$domain);
       ($fullgraph?&Apache::loncommon::designparm('login.link'):'#0000FF');  my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
     my $vlink=  my $logo=&Apache::loncommon::designparm('login.logo',$domain);
       ($fullgraph?&Apache::loncommon::designparm('login.vlink'):'#0000FF');  my $img=&Apache::loncommon::designparm('login.img',$domain);
     my $alink=&Apache::loncommon::designparm('login.alink');  my $domainlogo=&Apache::loncommon::domainlogo($domain);
     my $mainbg=  my $login=&Apache::loncommon::designparm('login.login',$domain);
       ($fullgraph?&Apache::loncommon::designparm('login.mainbg'):'#FFFFFF');  if ($login eq '') {
     my $sidebg=  $login = $iconpath.'/'.&mt('userauthentication.gif');
       ($fullgraph?&Apache::loncommon::designparm('login.sidebg'):'#FFFFFF');  }
     my $logo=&Apache::loncommon::designparm('login.logo');  my $showbanner = 1;
     my $img=&Apache::loncommon::designparm('login.img');  my $showmainlogo = 1;
   if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
       $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
 # ---------------------------------------------------------- Serve rest of page  }
     $r->print(<<ENDSCRIPT);  if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
       $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
 <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink"  }
   topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>  my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
   my $showcoursecat =
  <script language="JavaScript">  &Apache::loncommon::designparm('login.coursecatalog',$domain);
     function send()  my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);
     {  my $shownewuserlink = 
  this.document.server.elements.uname.value  &Apache::loncommon::designparm('login.newuser',$domain);
        =this.document.client.elements.uname.value;  my $now=time;
   my $js = (<<ENDSCRIPT);
         this.document.server.elements.udom.value  
        =this.document.client.elements.udom.value;  <script type="text/javascript" language="JavaScript">
   // <![CDATA[
         this.document.server.elements.imagesuppress.value  function send()
        =this.document.client.elements.imagesuppress.checked;  {
   this.document.server.elements.uname.value
         this.document.server.elements.embedsuppress.value  =this.document.client.elements.uname.value;
        =this.document.client.elements.embedsuppress.checked;  
   this.document.server.elements.udom.value
   =this.document.client.elements.udom.value;
   
   uextkey=this.document.client.elements.uextkey.value;
   lextkey=this.document.client.elements.lextkey.value;
   initkeys();
   
   this.document.server.elements.upass0.value
       =crypted(this.document.client.elements.upass$now.value.substr(0,15));
   this.document.server.elements.upass1.value
       =crypted(this.document.client.elements.upass$now.value.substr(15,15));
   this.document.server.elements.upass2.value
       =crypted(this.document.client.elements.upass$now.value.substr(30,15));
   
         this.document.server.elements.appletsuppress.value  this.document.client.elements.uname.value='';
        =this.document.client.elements.appletsuppress.checked;  this.document.client.elements.upass$now.value='';
   
         this.document.server.elements.fontenhance.value  this.document.server.submit();
        =this.document.client.elements.fontenhance.checked;  return false;
   }
   // ]]>
   </script>
   
         this.document.server.elements.blackwhite.value  ENDSCRIPT
        =this.document.client.elements.blackwhite.checked;  
   
         this.document.server.elements.remember.value  # --------------------------------------------------- Print login screen header
        =this.document.client.elements.remember.checked;  
   
         uextkey=this.document.client.elements.uextkey.value;  my %add_entries = (
         lextkey=this.document.client.elements.lextkey.value;         bgcolor      => "$mainbg",
         initkeys();         text         => "$font",
          link         => "$link",
          vlink        => "$vlink",
          alink        => "$alink",);
   
   $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
          { 'redirect'       => [$expire,'/adm/roles'], 
    'add_entries' => \%add_entries,
    'only_body'   => 1,}));
   
   # ----------------------------------------------------------------------- Texts
   
   my %lt=&Apache::lonlocal::texthash(
     'un'  => 'Username',
     'pw'  => 'Password',
     'dom' => 'Domain',
     'perc' => 'percent',
     'load' => 'Server Load',
     'userload' => 'User Load',
     'catalog' => 'Course Catalog',
     'log' => 'Log in',
     'help' => 'Log-in Help',
     'serv' => 'Server',
     'servadm' => 'Server Administration',
     'helpdesk' => 'Contact Helpdesk',
     'forgotpw' => 'Forgot password?',
     'newuser'  => 'New User?',
     );
   # -------------------------------------------------- Change password field name
   my $forgotpw = &forgotpwdisplay(%lt);
   my $loginhelp = &loginhelpdisplay(%lt);
   
         this.document.server.elements.upass.value  # ---------------------------------------------------- Serve out DES JavaScript
     =crypted(this.document.client.elements.upass.value);  {
   my $jsh=Apache::File->new($include."/londes.js");
   $r->print(<$jsh>);
   }
   # ---------------------------------------------------------- Serve rest of page
   
         this.document.server.submit();  $r->print(
  return false;    '<div class="LC_loginpage_container">');
     }  
  </script>  
 ENDSCRIPT  
   
     if ($fullgraph) {  #
  $r->print(  #  If the loadbalancing yielded just http:// because perhaps there's no loadbalancing?
   '<table width="100%" cellpadding=0 cellspacing=0 border=0>');  #  then just us a relative link to authenticate:
     }  #
   
     $r->print(<<ENDSERVERFORM);  $r->print(<<ENDSERVERFORM);
   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">  <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
    <input type="hidden" name="logtoken" value="$logtoken" />     <input type="hidden" name="logtoken" value="$logtoken" />
    <input type="hidden" name="serverid" value="$lonhost" />     <input type="hidden" name="serverid" value="$lonhost" />
    <input type="hidden" name="interface" value="$ENV{'form.interface'}" />  
    <input type="hidden" name="uname" value="" />     <input type="hidden" name="uname" value="" />
    <input type="hidden" name="upass" value="" />     <input type="hidden" name="upass0" value="" />
      <input type="hidden" name="upass1" value="" />
      <input type="hidden" name="upass2" value="" />
    <input type="hidden" name="udom" value="" />     <input type="hidden" name="udom" value="" />
    <input type="hidden" name="imagesuppress"  value="" />     <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
    <input type="hidden" name="appletsuppress"  value="" />     <input type="hidden" name="localres" value="$env{'form.localres'}" />
    <input type="hidden" name="embedsuppress"  value="" />  
    <input type="hidden" name="fontenhance"  value="" />  
    <input type="hidden" name="blackwhite"  value="" />  
    <input type="hidden" name="remember"  value="" />  
   </form>    </form>
 ENDSERVERFORM  ENDSERVERFORM
     if ($fullgraph) { $r->print(<<ENDTOP);  my $coursecatalog;
   <!-- The LON-CAPA Header -->  if (($showcoursecat eq '') || ($showcoursecat)) {
   <tr>      $coursecatalog = &coursecatalog_link($lt{'catalog'});
   
    <!-- Row 1 Columns 2-4 -->  
    <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td>  
   </tr>  
   
   <!-- The gray bar that starts the two table frames -->  
   <tr>  
   
    <!-- Row 2 Column 1 -->  
    <td width=182 height=27 bgcolor="$sidebg">&nbsp;</td>  
   
    <!-- Row 2 Column 2 -->  
    <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>  
   
    <!-- Row 2 Column 3 -->  
    <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>  
   
    <!-- Row 2 Column 4 -->  
    <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>  
   </tr>  
   <tr>  
      
    <!-- A cell that will hold the 'access' and 'about' buttons -->  
    <!-- Row 3 Column 1 -->  
    <td valign="top" height=60 align="center" bgcolor="$sidebg">  
     <a href="/adm/login?interface=textual"><img src="$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>  
    </td>  
   
    <!-- The shaded space between the two main columns -->  
    <!-- Row 3 Column 2 -->  
    <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  
   
    <!-- The right main column holding the large LON-CAPA logo-->  
    <!-- Rows 3-4 Column 3 -->  
    <td align="center" valign="top" width="100%" height="100%" rowspan=2 bgcolor="$mainbg">  
     <center>  
      <img src="$logo" alt="" />  
     </center>  
    </td>  
   
    <!-- Row 3 Column 4 -->  
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>  
   </tr>  
   <tr>  
   
    <!-- The entry form -->  
    <!-- Row 4 Column 1 -->  
    <td align="center" valign="middle" bgcolor="$sidebg">  
 ENDTOP  
 } else {  
     $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>');  
 }  }
     $r->print('<form name="client" onsubmit="return(send())">');  my $newuserlink;
     unless ($fullgraph) {  if ($shownewuserlink) {
         $r->print(<<ENDACCESSOPTIONS);      $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
 <h3>Select Accessibility Options</h3>  }
 <input type="checkbox" name="imagesuppress" /> Suppress rendering of images<br />  my $logintitle;
 <input type="checkbox" name="appletsuppress" /> Suppress Java applets<br />  if ($loginheader eq 'text') {
 <input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia<br />      $logintitle ='<h2>'.$lt{'log'}.'</h2>';
 <input type="checkbox" name="fontenhance" /> Increase font size<br />  
 <input type="checkbox" name="blackwhite" /> Switch to black and white mode<br />  
 <p>If you have accessibility needs that are not addressed by this interface,   
 please  
 contact the system administrator at <tt>$sysadm</tt>.</p><br />  
 <input type="checkbox" name="remember" /> Remember these settings for next login<hr />  
 ENDACCESSOPTIONS  
 } else {  } else {
     $r->print(<<ENDNOOPT);      $logintitle = '<img src="'.$login.'" alt="'.
 <input type="hidden" name="imagesuppress"  value="" />                    &mt('User Authentication').'" />';
 <input type="hidden" name="embedsuppress"  value="" />  }
 <input type="hidden" name="appletsuppress"  value="" />  
 <input type="hidden" name="fontenhance"  value="" />  my $noscript_warning='<noscript><span class="LC_warning"><b>'
 <input type="hidden" name="blackwhite"  value="" />                       .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
 <input type="hidden" name="remember"  value="" />                      .'</b></span></noscript>';
 ENDNOOPT  my $helpdeskscript;
 }  my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
     $r->print(<<ENDLOGIN);                              $version,$authdomain,\$helpdeskscript);
      <input type="hidden" name="lextkey" value="$lextkey">  
      <input type="hidden" name="uextkey" value="$uextkey">  my $loginform=(<<LFORM);
   <form name="client" action="" onsubmit="return(send())">
      <!-- Start the sub-table for text and input alignment -->    <input type="hidden" name="lextkey" value="$lextkey" />
      <table border=0 cellspacing=0 cellpadding=0>    <input type="hidden" name="uextkey" value="$uextkey" />
       <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/userauthentication.gif" alt="User Authentication" /></td></tr>    <b><label for="uname">$lt{'un'}</label>:</b><br />
       <tr>    <input type="text" name="uname" size="15" value="$authusername" /><br />
        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;User Name:</b></font></td>    <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>    <input type="password" name="upass$now" size="15" /><br />
       </tr>    <b><label for="udom">$lt{'dom'}</label>:</b><br />
       <tr>    <input type="text" name="udom" size="15" value="$authdomain" /><br />
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;Password:</b></font></td>    <input type="submit" value="$lt{'log'}" />
        <td bgcolor="$mainbg"><input type="password" name="upass" size="10" /></td>  </form>
       </tr>  LFORM
   
       if ($showbanner) {
           $r->print(<<HEADER);
   <!-- The LON-CAPA Header -->
   <table border="0" align="left" width="100%" cellspacing="0" cellpadding="1">
    <tr>
     <td align="left" valign="top" bgcolor="$pgbg">
         <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
     </td>
    </tr>
   </table>
   HEADER
       }
       $r->print(<<ENDTOP);
   <div class="LC_loginpage_space">&nbsp;</div>
   <div class="LC_loginpage_floatLeft">
   <div class="LC_loginpage_loginContainer">
     $logintitle
      <table border="0" align="left" cellspacing="1" cellpadding="2" width="100%">
       <tr>        <tr>
        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;Domain:</b></font></td>     <td>
        <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>   $loginform
              </td>
       </tr>        </tr>
      </table>  
      $noscript_warning
   </div>
     
   <div class="LC_loginpage_loginInfo">
           $loginhelp<br />
           $forgotpw<br />
    $contactblock<br />
           $newuserlink
           $coursecatalog
   </div>
   </div>
   ENDTOP
       if ($showmainlogo) {
           $r->print(' <img src="'.$logo.'" alt="" />'."\n");
       }
   $r->print(<<ENDTOP);
   $announcements
   $domainlogo
   <div class="LC_loginpage_space">&nbsp;</div>
   ENDTOP
   
   $r->print(<<ENDDOCUMENT);
        <table border="0" cellspacing="0" cellpadding="0">
       <tr>        <tr>
        <td bgcolor="$mainbg">&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html">Help</a></td>         <td  align="left" valign="top">
        <td bgcolor="$mainbg" valign="bottom" align="center">          <small><b>&nbsp;&nbsp;&nbsp;$lt{'dom'}:&nbsp;</b></small>
         <br />         </td>
         <input type="submit" value="Log In" />         <td  align="left" valign="top">
           <small><tt>&nbsp;$domain</tt></small>
        </td>         </td>
       </tr>        </tr>
      </table>  
      <!-- End sub-table -->  
     </form>  
 ENDLOGIN  
     if ($fullgraph) {  
  $r->print(<<ENDDOCUMENT);  
    </td>  
   
    <!-- Row 4 Column 2 -->  
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  
   
    <!-- Row 4 Column 4 -->  
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>  
   </tr>  
   <tr>  
   
    <!-- Row 5 Column 1 -->  
    <td bgcolor="$sidebg" valign="middle" align="left">  
      <br />  
      <table border=0 cellspacing=0 cellpadding=0>  
       <tr>        <tr>
        <td bgcolor="$sidebg" align="left" valign="top">         <td  align="left" valign="top">
         <small><b>&nbsp;&nbsp;&nbsp;Domain:&nbsp;</b></small>          <small><b>&nbsp;&nbsp;&nbsp;$lt{'serv'}:&nbsp;</b></small>
        </td>         </td>
        <td bgcolor="$sidebg" align="left" valign="top">         <td align="left" valign="top">
         <small><tt>&nbsp;$domain</tt></small>          <small><tt>&nbsp;$lonhost ($role)</tt></small>
        </td>         </td>
       </tr>        </tr>
       <tr>        <tr>
        <td bgcolor="$sidebg" align="left" valign="top">         <td align="left" valign="top">
         <small><b>&nbsp;&nbsp;&nbsp;Server:&nbsp;</b></small>          <small><b>&nbsp;&nbsp;&nbsp;$lt{'load'}:&nbsp;</b></small>
        </td>         </td>
        <td bgcolor="$sidebg" align="left" valign="top">         <td align="left" valign="top">
         <small><tt>&nbsp;$lonhost ($role)</tt></small>          <small><tt>&nbsp;$loadpercent $lt{'perc'}</tt></small>
        </td>         </td>
       </tr>        </tr>
       <tr>        <tr>
        <td bgcolor="$sidebg" align="left" valign="top">         <td align="left" valign="top">
         <small><b>&nbsp;&nbsp;&nbsp;Load:&nbsp;</b></small>          <small><b>&nbsp;&nbsp;&nbsp;$lt{'userload'}:&nbsp;</b></small>
        </td>         </td>
        <td bgcolor="$sidebg" align="left" valign="top">         <td align="left" valign="top">
         <small><tt>&nbsp;$loadpercent percent</tt></small>          <small><tt>&nbsp;$userloadpercent $lt{'perc'}</tt></small>
        </td>         </td>
       </tr>        </tr>
      </table>       </table>
      <br />   </div>
     <small>  
      <b>&nbsp;&nbsp;&nbsp;System Administration:</b><br />  
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$sysadm</tt><br />  
      <b>&nbsp;&nbsp;&nbsp;Server Administration:</b><br />  
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$servadm<br />&nbsp;</tt>  
     </small>  
    </td>  
   
    <!-- Row 5 Column 2 -->  <script type="text/javascript">
    <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>  // <![CDATA[
   // the if prevents the script error if the browser can not handle this
    <!-- Row 5 Column 3 -->  if ( document.client.uname ) { document.client.uname.focus(); }
    <td width="100%" valign="bottom" bgcolor="$mainbg">  // ]]>
 $domainlogo  </script>
 </td>  $helpdeskscript
   
    <!-- Row 5 Column 4 -->  ENDDOCUMENT
    <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>      my %endargs = ( 'noredirectlink' => 1, );
   </tr>      $r->print(&Apache::loncommon::end_page(\%endargs));
   <tr>      return OK;
   }
   
    <!-- Row 6 Column 1 -->  sub redirect_page {
    <td bgcolor="$sidebg">&nbsp;</td>      my ($desthost) = @_;
       my $protocol = $Apache::lonnet::protocol{$desthost};
       $protocol = 'http' if ($protocol ne 'https');
       my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).'/';
       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;
   }
   
    <!-- Row 6 Column 2 -->  sub contactdisplay {
    <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>      my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;
       my $contactblock;
       my $showhelpdesk = 0;
       my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
       if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {
           $showhelpdesk = 1;
       }
       if ($servadm && $showadminmail) {
           $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.
                            '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';
       }
       if ($showhelpdesk) {
           $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
           my $thisurl = &escape('/adm/login');
           $$helpdeskscript = <<"ENDSCRIPT";
   <script type="text/javascript">
   // <![CDATA[
   function helpdesk() {
       var codedom = document.client.udom.value;
       if (codedom == '') {
           codedom = "$authdomain";
       }
       var querystr = "origurl=$thisurl&codedom="+codedom;
       document.location.href = "/adm/helpdesk?"+querystr;
       return;
   }
   // ]]>
   </script>
   ENDSCRIPT
       }
       $contactblock .= <<"ENDBLOCK";
        &nbsp;&nbsp;&nbsp;$version
   ENDBLOCK
       return $contactblock;
   }
   
    <!-- Row 6 Column 3 -->  sub forgotpwdisplay {
    <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>      my (%lt) = @_;
       my $prompt_for_resetpw = 1; 
       if ($prompt_for_resetpw) {
           return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
       }
       return;
   }
   
    <!-- Row 6 Column 4 -->  sub loginhelpdisplay {
    <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>      my (%lt) = @_;
   </tr>      my $login_help = 1;
  </table>      if ($login_help) {
           return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>';
       }
       return;
   }
   
 <script>  sub coursecatalog_link {
 // the if prevents the script error if the browser can't handle this      my ($linkname) = @_;
 if ( document.client.uname ) { document.client.uname.focus(); }      return <<"END";
 </script>        <a href="/adm/coursecatalog">$linkname</a>
   END
   }
   
 ENDDOCUMENT  sub newuser_link {
       my ($linkname) = @_;
       return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';
 }  }
     $r->print('</body></html>');  
     return OK;  
 }   
   
 1;  1;
 __END__  __END__
Removed from v.1.39  
changed lines
  Added in v.1.126

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