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Diff for /loncom/auth/lonauth.pm between versions 1.26 and 1.101

version 1.26, 2001/10/08 22:37:50 version 1.101, 2009/07/22 21:51:03
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # User Authentication Module  # User Authentication Module
 # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15  #
 # 16/11,12/16,  # $Id$
 # 1/14,2/24,2/28,2/29,3/7,5/29,5/30,5/31,6/1,6/5,6/29,  #
 # 7/1,7/10,10/2,10/5,10/9,10/26,10/30,11/10,  # Copyright Michigan State University Board of Trustees
 # 05/28,05/29 Gerd Kortemeyer  #
 # 07/24 Scott Harrison  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 # 07/28,08/03 Gerd Kortemeyer  #
 # 8/15 Scott Harrison  # LON-CAPA is free software; you can redistribute it and/or modify
 # 8/20 Gerd Kortemeyer  # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   
 package Apache::lonauth;  package Apache::lonauth;
   
 use strict;  use strict;
   use LONCAPA;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File;  
 use CGI qw(:standard);  use CGI qw(:standard);
 use CGI::Cookie();  
 use DynaLoader; # for Crypt::DES version  use DynaLoader; # for Crypt::DES version
 use Crypt::DES;  use Crypt::DES;
 use Apache::lonnet();  use Apache::loncommon();
   use Apache::lonnet;
 use Apache::lonmenu();  use Apache::lonmenu();
   use Apache::createaccount;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
   use Apache::lonlocal;
   use HTML::Entities;
    
 # ------------------------------------------------------------ Successful login  # ------------------------------------------------------------ Successful login
   
 sub success {  sub success {
     my ($r, $username, $domain, $authhost,$lowerurl) = @_;      my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
     my $lonids=$r->dir_config('lonIDsDir');   $form) = @_;
   
 # See if old ID present, if so, remove  # ------------------------------------------------------------ Get cookie ready
       my $cookie =
    &Apache::loncommon::init_user_environment($r, $username, $domain,
     $authhost, $form,
     {'extra_env' => $extra_env,});
   
       my $public=($username eq 'public' && $domain eq 'public');
   
       if ($public or $lowerurl eq 'noredirect') { return $cookie; }
   
     my $filename;  
     opendir(DIR,$lonids);  
     while ($filename=readdir(DIR)) {  
        if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {  
   unlink($lonids.'/'.$filename);  
        }  
     }  
     closedir(DIR);  
   
 # Give them a new cookie  
   
     my $cookie;  
     my $now=time;  
     $cookie="$username\_$now\_$domain\_$authhost";  
   
 # Initialize roles  
   
     my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);  
   
 # ------------------------------------ Check browser type and MathML capability  
   
     my @browsertype=split(/\&/,$r->dir_config("lonBrowsDet"));  
     my %mathcap=split(/\&/,$r->dir_config("lonMathML"));  
     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};  
     my $i;  
     my $clientbrowser='unknown';  
     my $clientversion='0';  
     my $clientmathml='';  
     for ($i=0;$i<=$#browsertype;$i++) {  
         my ($bname,$match,$notmatch,$vreg,$minv)=split(/\:/,$browsertype[$i]);  
  if (($httpbrowser=~/$match/i)  && ($httpbrowser!~/$notmatch/i)) {  
     $clientbrowser=$bname;  
             $httpbrowser=~/$vreg/i;  
     $clientversion=$1;  
             $clientmathml=($clientversion>=$minv);  
         }  
     }  
     my $clientos='unknown';  
     if (($httpbrowser=~/linux/i) ||  
         ($httpbrowser=~/unix/i) ||  
         ($httpbrowser=~/ux/i) ||  
         ($httpbrowser=~/solaris/i)) { $clientos='unix'; }  
     if (($httpbrowser=~/vax/i) ||  
         ($httpbrowser=~/vms/i)) { $clientos='vms'; }  
     if ($httpbrowser=~/next/i) { $clientos='next'; }  
     if (($httpbrowser=~/mac/i) ||  
         ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }  
     if ($httpbrowser=~/win/i) { $clientos='win'; }  
   
 # ------------------------------------------------------------- Get environment  
   
     my $userenv=Apache::lonnet::reply("dump:$domain:$username:environment",  
                                       $authhost);  
     if (($userenv eq 'con_lost') ||   
         ($userenv =~ /^error\:/)) {  
         $userenv='';  
     }  
     $userenv=~s/\&/\nenvironment\./g;  
     if ($userenv ne '') {  
  $userenv='environment.'.$userenv;  
     }  
 # --------------------------------------------------------- Write first profile  
   
        {  
     my $idf=Apache::File->new(">$lonids/$cookie.id");  
     unless (flock($idf,LOCK_EX)) {  
       &Apache::lonnet::logthis("<font color=blue>WARNING: ".  
     'Could not obtain exclusive lock in lonauth: '.$!);  
       $idf->close();  
       return 'error: '.$!;  
     }  
             if ($userenv ne '') { print $idf "$userenv\n"; }  
             print $idf "user.name=$username\n";  
             print $idf "user.domain=$domain\n";  
             print $idf "user.home=$authhost\n";  
             print $idf "browser.type=$clientbrowser\n";  
             print $idf "browser.version=$clientversion\n";  
             print $idf "browser.mathml=$clientmathml\n";  
             print $idf "browser.os=$clientos\n";  
             print $idf "request.course.fn=\n";  
             print $idf "request.course.uri=\n";  
             print $idf "request.course.sec=\n";  
             print $idf "request.role=cm\n";  
             print $idf "request.host=$ENV{'HTTP_HOST'}\n";   
             if ($userroles ne '') { print $idf "$userroles"; }  
     $idf->close();  
         }  
          $ENV{'request.role'}='cm';  
 # -------------------------------------------------------------------- Log this  # -------------------------------------------------------------------- Log this
   
     &Apache::lonnet::log($domain,$username,$authhost,      &Apache::lonnet::log($domain,$username,$authhost,
Line 133  sub success { Line 72  sub success {
     }      }
   
 # ------------------------------------------------------------ Get cookie ready  # ------------------------------------------------------------ Get cookie ready
   
     $cookie="lonID=$cookie; path=/";      $cookie="lonID=$cookie; path=/";
 # -------------------------------------------------------- Menu script and info  # -------------------------------------------------------- Menu script and info
     my $windowinfo=&Apache::lonmenu::open();      my $destination = $lowerurl;
 # ------------------------------------------------------------- Info for Remote  
     my $configmenu=&Apache::lonmenu::rawconfig();  
 # ------------------------------------------------- Output for successful login  
   
     $r->send_cgi_header(<<ENDHEADER);  
 Content-type: text/html  
 Set-cookie: $cookie  
   
 ENDHEADER  
     $r->print(<<ENDSUCCESS);  
 <html>  
 <head>  
 <title>Successful Login to the LearningOnline Network with CAPA</title>  
 <script>  
   
 // --------------------------------------------- Checks if server frame defined      if (defined($form->{role})) {
           my $envkey = 'user.role.'.$form->{role};
 function checkdef() {          my $now=time;
    if ((menuloaded==0) && (tim==0)) { setTimeout('checkdef()',100); }          my $then=$env{'user.login.time'};
 }          my $refresh=$env{'user.refresh.time'};
           if (exists($env{$envkey})) {
 // ---------------------------------------------------------- The wait function              my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
               &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
 function wait() {                                           \$trolecode,\$tstatus,\$tstart,\$tend);
    if ((menuloaded==1) || (tim==1)) {              if ($tstatus eq 'is') {
       if (tim==0) {                  $destination  .= ($destination =~ /\?/) ? '&' : '?';
          clearTimeout(canceltim);                  my $newrole = &HTML::Entities::encode($form->{role},'"<>&');
          $configmenu                  $destination .= 'selectrole=1&'.$newrole.'=1';
          window.location='$lowerurl';                }
       } else {          }
          alert("Remote Control Timed Out.");      }
       }      if (defined($form->{symb})) {
    } else {          my $destsymb = $form->{symb};
       setTimeout('wait();',100);          $destination  .= ($destination =~ /\?/) ? '&' : '?';
    }          if ($destsymb =~ /___/) {
 }              # FIXME Need to deal with encrypted symbs and urls as needed.
               my ($map,$resid,$desturl)=split(/___/,$destsymb);
               unless ($desturl=~/^(adm|uploaded|editupload|public)/) {
                   $desturl = &Apache::lonnet::clutter($desturl);
               }
               $desturl = &HTML::Entities::encode($desturl,'"<>&');
               $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
               $destination .= '&destinationurl='.$desturl.
                               '&destsymb='.$destsymb;
           } else {
               $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
               $destination .= '&destinationurl='.$destsymb;
           }
       }
   
 function main() {      my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
    canceltim=setTimeout('tim=1;',80000);      my $startupremote=&Apache::lonmenu::startupremote($destination);
    checkdef();      my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
    wait();      my $setflags=&Apache::lonmenu::setflags();
 }      my $maincall=&Apache::lonmenu::maincall();
       my $brcrum = [{'href' => '',
                      'text' => 'Successful Login'},];
       my $start_page=&Apache::loncommon::start_page('Successful Login',
                                                     $startupremote,
                                                     {'no_inline_link' => 1,
                                                      'bread_crumbs' => $brcrum,});
       my $end_page  =&Apache::loncommon::end_page();
   
       my $continuelink;
       if ($env{'environment.remote'} eq 'off') {
    $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
       }
   # ------------------------------------------------- Output for successful login
   
 </script>      &Apache::loncommon::content_type($r,'text/html');
 </head>      $r->header_out('Set-cookie' => $cookie);
 <body bgcolor="#FFFFFF">      $r->send_http_header;
 <script>  
     menuloaded=0;      my %lt=&Apache::lonlocal::texthash(
     tim=0;         'wel' => 'Welcome',
 </script>         'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
          'pro' => 'Login problems?',
          'log' => 'loginproblems.html',
          );
       $r->print(<<ENDSUCCESS);
   $start_page
   $setflags
 $windowinfo  $windowinfo
 <h1>Welcome!</h1>  <h1>$lt{'wel'}</h1>
 <script>  $lt{'mes'}<p>
     main();  <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
 </script>  $remoteinfo
 </body>  $maincall
 </html>  $continuelink
   $end_page
 ENDSUCCESS  ENDSUCCESS
 }  }
   
 # --------------------------------------------------------------- Failed login!  # --------------------------------------------------------------- Failed login!
   
 sub failed {  sub failed {
     my ($r,$message) = @_;      my ($r,$message,$form) = @_;
     $r->send_cgi_header(<<ENDFHEADER);      my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
 Content-type: text/html      {'no_inline_link' => 1,});
       my $retry = '/adm/login?username='.$form->{'uname'}.
 ENDFHEADER                  '&domain='.$form->{'udom'};
     $r->print(<<ENDFAILED);      if (exists($form->{role})) {
 <html>          $retry .= '&role='.$form->{role};
 <head>      }
 <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>      if (exists($form->{symb})) {
 </head>          $retry .= '&symb='.$form->{symb};
 <html>      }
 <body bgcolor="#FFFFFF">      my $end_page   = &Apache::loncommon::end_page();
 <h1>Sorry ...</h1>      &Apache::loncommon::content_type($r,'text/html');
 <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>      $r->send_http_header;
 </body>      $r->print(
 </html>         $start_page
 ENDFAILED        .'<h1>'.&mt('Sorry ...').'</h1>'
         .'<p class="LC_warning">'.&mt($message).'</p>'
         .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
         .'</p>'
         .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
         .$end_page
       );
    }
   
   # ------------------------------------------------------------------ Rerouting!
   
   sub reroute {
       my ($r) = @_;
       &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;
       my $msg='<h1>'.&mt('Sorry ...').'</h1>'
              .&mt('Please [_1]log in again[_2].');
       &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
 }  }
   
 # ---------------------------------------------------------------- Main handler  # ---------------------------------------------------------------- Main handler
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
       my $form;
   # Are we re-routing?
       if (-e '/home/httpd/html/lon-status/reroute.txt') {
    &reroute($r);
    return OK;
       }
   
       &Apache::lonlocal::get_language_handle($r);
   
   # -------------------------------- Prevent users from attempting to login twice
       my $handle = &Apache::lonnet::check_for_valid_session($r);
       if ($handle ne '') {
   # Indeed, a valid token is found
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    my $start_page = 
       &Apache::loncommon::start_page('Already logged in');
    my $end_page = 
       &Apache::loncommon::end_page();
           $r->print(
              $start_page
             .'<h1>'.&mt('You are already logged in!').'</h1>'
             .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
                       ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
             .'</p>'
             .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
             .$end_page
           );
           return OK;
       }
   
   # ---------------------------------------------------- No valid token, continue
   
   
     my $buffer;      my $buffer;
     $r->read($buffer,$r->header_in('Content-length'));      if ($r->header_in('Content-length') > 0) {
     my @pairs=split(/&/,$buffer);   $r->read($buffer,$r->header_in('Content-length'),0);
     my $pair; my $name; my $value; my %FORM;      }
     foreach $pair (@pairs) {      my %form;
        ($name,$value) = split(/=/,$pair);      foreach my $pair (split(/&/,$buffer)) {
          my ($name,$value) = split(/=/,$pair);
        $value =~ tr/+/ /;         $value =~ tr/+/ /;
        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;         $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
        $FORM{$name}=$value;         $form{$name}=$value;
     }       } 
   
     if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {      if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
  failed($r,'Username, password and domain need to be specified');   &failed($r,'Username, password and domain need to be specified.',
    \%form);
         return OK;          return OK;
     }      }
     $FORM{'uname'} =~ s/\W//g;  
     $FORM{'udom'}  =~ s/\W//g;  # split user logging in and "su"-user
   
       ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
       $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
       $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
       $form{'udom'}  = &LONCAPA::clean_domain(  $form{'udom'});
   
     my $role   = $r->dir_config('lonRole');      my $role   = $r->dir_config('lonRole');
     my $domain = $r->dir_config('lonDefDomain');      my $domain = $r->dir_config('lonDefDomain');
     my $prodir = $r->dir_config('lonUsersDir');      my $prodir = $r->dir_config('lonUsersDir');
       my $contact_name = &mt('LON-CAPA helpdesk');
   
 # ---------------------------------------- Get the information from login token  # ---------------------------------------- Get the information from login token
   
     my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},      my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
                                       $FORM{'serverid'});                                        $form{'serverid'});
   
     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {      if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
  failed($r,'Login token missing, inaccessible or expired');   &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
           return OK;
       } else {
    my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
      $form{'serverid'});
           if ( $reply ne 'ok' ) {
               &failed($r,'Session could not be opened.',\%form);
       &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
       return OK;
    }
       }
   
       if (!&Apache::lonnet::domain($form{'udom'})) {
           &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
         return OK;          return OK;
     }      }
       
     my ($key,$firsturl)=split(/&/,$tmpinfo);      my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
       if ($rolestr) {
           $rolestr = &unescape($rolestr);
       }
       if ($symbstr) {
           $symbstr= &unescape($symbstr);
       }
       if ($rolestr =~ /^role=/) {
           (undef,$form{'role'}) = split('=',$rolestr);
       }
       if ($symbstr =~ /^symb=/) { 
           (undef,$form{'symb'}) = split('=',$symbstr);
       }
   
     my $keybin=pack("H16",$key);      my $keybin=pack("H16",$key);
   
Line 267  sub handler { Line 307  sub handler {
     else {      else {
  $cipher=new DES $keybin;   $cipher=new DES $keybin;
     }      }
       my $upass='';
       for (my $i=0;$i<=2;$i++) {
    my $chunk=
       $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
   
     my $upass=$cipher->decrypt(   $chunk.=
        unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
   
     $upass.=$cipher->decrypt(   $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
        unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));   $upass.=$chunk;
       }
     $upass=substr($upass,1,ord(substr($upass,0,1)));  
   
 # ---------------------------------------------------------------- Authenticate  # ---------------------------------------------------------------- Authenticate
     my $authhost=Apache::lonnet::authenticate($FORM{'uname'},      my @cancreate;
                                               $upass,      my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
                                               $FORM{'udom'});      if (ref($domconfig{'usercreation'}) eq 'HASH') {
           if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
               if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
                   @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
               } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && 
                        ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
                   @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
               }
           }
       }
       my $defaultauth;
       if (grep(/^login$/,@cancreate)) {
           $defaultauth = 1;
       }
       my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
                                                 $form{'udom'},$defaultauth);
           
 # --------------------------------------------------------------------- Failed?  # --------------------------------------------------------------------- Failed?
   
     if ($authhost eq 'no_host') {      if ($authhost eq 'no_host') {
  failed($r,'Username and/or password could not be authenticated');   &failed($r,'Username and/or password could not be authenticated.',
    \%form);
         return OK;          return OK;
       } elsif ($authhost eq 'no_account_on_host') {
           my %domconfig = 
               &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
           if (grep(/^login$/,@cancreate)) {
               my $start_page = 
                   &Apache::loncommon::start_page('Create a user account in LON-CAPA',
                                                  '',{'no_inline_link'   => 1,});
               my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
               my $lonhost = $r->dir_config('lonHostID');
               my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
               my $contacts = 
                   &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                                                           $form{'udom'},$origmail);
               my ($contact_email) = split(',',$contacts); 
               my $output = &Apache::createaccount::username_check($form{'uname'}, 
                                                                   $form{'udom'},$domdesc,'',
                                                                   $lonhost,$contact_email,$contact_name);
               &Apache::loncommon::content_type($r,'text/html');
               $r->send_http_header;
               &Apache::createaccount::print_header($r,$start_page);
               $r->print('<h3>'.&mt('Account creation').'</h3>'.
                         &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
                         $output.&Apache::loncommon::end_page());
               return OK;
           } else {
               &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form);
               return OK;
           }
     }      }
   
     if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {      if (($firsturl eq '') || 
    ($firsturl=~/^\/adm\/(logout|remote)/)) {
  $firsturl='/adm/roles';   $firsturl='/adm/roles';
     }      }
   # --------------------------------- Are we attempting to login as somebody else?
       if ($form{'suname'}) {
   # ------------ see if the original user has enough privileges to pull this stunt
    if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
   # ---------------------------------------------------- see if the su-user exists
       unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
    eq 'no_host') {
    &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
   # ------------------------------ see if the su-user is not too highly privileged
    unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
   # -------------------------------------------------------- actually switch users
       &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
    ' logging in as '.$form{'suname'});
       $form{'uname'}=$form{'suname'};
    } else {
       &Apache::lonnet::logthis('Attempted switch user to privileged user');
    }
       }
    } else {
       &Apache::lonnet::logthis('Non-privileged user attempting switch user');
    }
       }
   
     success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);      if ($r->dir_config("lonBalancer") eq 'yes') {
    &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
    \%form);
    $r->internal_redirect('/adm/switchserver');
       } else {
    &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
    \%form);
       }
     return OK;      return OK;
 }  }
   
Removed from v.1.26  
changed lines
  Added in v.1.101

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