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Diff for /loncom/auth/lonauth.pm between versions 1.19 and 1.79

version 1.19, 2001/06/02 16:10:04 version 1.79, 2006/06/02 21:23:49
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  #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # 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
   # 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 CGI::Cookie();
   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 Fcntl qw(:flock);  use Fcntl qw(:flock);
   use Apache::lonlocal;
   
   my %FORM;
   
 # ------------------------------------------------------------ Successful login  # ------------------------------------------------------------ Successful login
   
 sub success {  sub success {
     my ($r, $username, $domain, $authhost,$lowerurl) = @_;      my ($r, $username, $domain, $authhost,$lowerurl) = @_;
     my $lonids=$r->dir_config('lonIDsDir');      my $lonids=$r->dir_config('lonIDsDir');
   
       my $public=($username eq 'public' && $domain eq 'public');
   
 # See if old ID present, if so, remove  # See if old ID present, if so, remove
   
     my $filename;      my ($filename,$cookie,$userroles);
     opendir(DIR,$lonids);      my $now=time;
     while ($filename=readdir(DIR)) {  
        if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {  
   unlink($lonids.'/'.$filename);  
        }  
     }  
     closedir(DIR);  
   
 # Give them a new cookie      if ($public) {
    my $max_public=100;
    my $oldest;
    my $oldest_time=0;
    for(my $next=1;$next<=$max_public;$next++) {
       if (-e $lonids."/publicuser_$next.id") {
    my $mtime=(stat($lonids."/publicuser_$next.id"))[9];
    if ($mtime<$oldest_time || !$oldest_time) {
       $oldest_time=$mtime;
       $oldest=$next;
    }
       } else {
    $cookie="publicuser_$next";
    last;
       }
    }
    if (!$cookie) { $cookie="publicuser_$oldest"; }
       } else {
    opendir(DIR,$lonids);
    while ($filename=readdir(DIR)) {
       if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
    unlink($lonids.'/'.$filename);
       }
    }
    closedir(DIR);
   
     my $cookie;  # Give them a new cookie
     my $now=time;  
     $cookie="$username\_$now\_$domain\_$authhost";  
   
    $cookie="$username\_$now\_$domain\_$authhost";
       
 # Initialize roles  # Initialize roles
   
     my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);   $userroles=&Apache::lonnet::rolesinit($domain,$username,$authhost);
       }
 # ------------------------------------ Check browser type and MathML capability  # ------------------------------------ Check browser type and MathML capability
   
     my @browsertype=split(/\&/,$r->dir_config("lonBrowsDet"));      my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
     my %mathcap=split(/\&/,$r->dir_config("lonMathML"));          $clientunicode,$clientos) = &Apache::loncommon::decode_user_agent($r);
     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'; }  
   
   # -------------------------------------- Any accessibility options to remember?
       if (($FORM{'interface'}) && ($FORM{'remember'} eq 'true')) {
    foreach ('imagesuppress','appletsuppress',
    'embedsuppress','fontenhance','blackwhite') {
       if ($FORM{$_} eq 'true') {
    &Apache::lonnet::put('environment',{$_ => 'on'},
        $domain,$username);
       } else {
    &Apache::lonnet::del('environment',[$_],$domain,$username);
       }
    }
       }
 # ------------------------------------------------------------- Get environment  # ------------------------------------------------------------- Get environment
   
     my $userenv=Apache::lonnet::reply("dump:$domain:$username:environment",      my %userenv=Apache::lonnet::dump('environment',$domain,$username);
                                       $authhost);      my ($tmp) = keys(%userenv);
     if (($userenv eq 'con_lost') ||       if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
         ($userenv =~ /^error\:/)) {   # default remote control to off
         $userenv='';   if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; }
     }      } else {
     $userenv=~s/\&/\nenvironment\./g;   undef(%userenv);
     if ($userenv ne '') {      }
  $userenv='environment.'.$userenv;      if (($userenv{'interface'}) && (!$FORM{'interface'})) {
    $FORM{'interface'}=$userenv{'interface'};
       }
       $env{'environment.remote'}=$userenv{'remote'};
       if ($userenv{'texengine'} eq 'ttm') { $clientmathml=1; }
   
   # --------------- Do not trust query string to be put directly into environment
       foreach ('imagesuppress','appletsuppress',
        'embedsuppress','fontenhance','blackwhite',
        'interface','localpath','localres') {
    $FORM{$_}=~s/[\n\r\=]//gs;
     }      }
 # --------------------------------------------------------- Write first profile  # --------------------------------------------------------- Write first profile
   
        {      {
     my $idf=Apache::File->new(">$lonids/$cookie.id");   my %initial_env = 
     unless (flock($idf,LOCK_EX)) {      ("user.name"          => $username,
       &Apache::lonnet::logthis("<font color=blue>WARNING: ".       "user.domain"        => $domain,
     'Could not obtain exclusive lock in lonauth: '.$!);       "user.home"          => $authhost,
       $idf->close();       "browser.type"       => $clientbrowser,
       return 'error: '.$!;       "browser.version"    => $clientversion,
     }       "browser.mathml"     => $clientmathml,
             if ($userenv ne '') { print $idf "$userenv\n"; }       "browser.unicode"    => $clientunicode,
             print $idf "user.name=$username\n";       "browser.os"         => $clientos,
             print $idf "user.domain=$domain\n";       "server.domain"      => $r->dir_config('lonDefDomain'),
             print $idf "user.home=$authhost\n";       "request.course.fn"  => '',
             print $idf "browser.type=$clientbrowser\n";       "request.course.uri" => '',
             print $idf "browser.version=$clientversion\n";       "request.course.sec" => '',
             print $idf "browser.mathml=$clientmathml\n";       "request.role"       => 'cm',
             print $idf "browser.os=$clientos\n";       "request.role.adv"   => $env{'user.adv'},
             print $idf "request.course.fn=\n";       "request.host"       => $ENV{'REMOTE_ADDR'},);
             print $idf "request.course.uri=\n";  
             print $idf "request.course.sec=\n";          if ($FORM{'localpath'}) {
             print $idf "request.role=cm\n";      $initial_env{"browser.localpath"}  = $FORM{'localpath'};
             print $idf "request.host=$ENV{'HTTP_HOST'}\n";       $initial_env{"browser.localres"}   = $FORM{'localres'};
             if ($userroles ne '') { print $idf "$userroles"; }  
     $idf->close();  
         }          }
          $ENV{'request.role'}='cm';  
    if ($public) {
       $initial_env{"environment.remote"} = "off";
    }
    if ($FORM{'interface'}) {
       $FORM{'interface'}=~s/\W//gs;
       $initial_env{"browser.interface"} = $FORM{'interface'};
       $env{'browser.interface'}=$FORM{'interface'};
       foreach my $option ('imagesuppress','appletsuppress',
    'embedsuppress','fontenhance','blackwhite') {
    if (($FORM{$option} eq 'true') ||
       ($userenv{$option} eq 'on')) {
       $initial_env{"browser.$option"} = "on";
    }
       }
    }
   
    open(my $idf,">$lonids/$cookie.id");
    unless (flock($idf,LOCK_EX)) {
       &Apache::lonnet::logthis("<font color=blue>WARNING: ".
      'Could not obtain exclusive lock in lonauth: '.$!);
       close($idf);
       return 'error: '.$!;
    }
   
    while (my ($key,$value) = each(%initial_env)) {
       print $idf (&escape($key).'='.&escape($value)."\n");
    }
    while (my ($key,$value) = each(%userenv)) {
       print $idf (&escape('environment.'.$key).'='.&escape($value)."\n");
    }
    while (my ($key,$value) = each(%{$userroles})) {
       print $idf (&escape($key).'='.&escape($value)."\n");
    }
    close($idf);
       }
       $env{'request.role'}='cm';
       $env{'request.role.adv'}=$env{'user.adv'};
       $env{'browser.type'}=$clientbrowser;
 # -------------------------------------------------------------------- Log this  # -------------------------------------------------------------------- Log this
   
     &Apache::lonnet::log($domain,$username,$authhost,      &Apache::lonnet::log($domain,$username,$authhost,
Line 120  sub success { Line 199  sub success {
   
 # ------------------------------------------------- Check for critical messages  # ------------------------------------------------- Check for critical messages
   
     my @what=&Apache::lonnet::dump('critical');      my @what=&Apache::lonnet::dump('critical',$domain,$username);
     if ($what[0]) {      if ($what[0]) {
  if ($what[0] ne 'con_lost') {   if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
     $lowerurl='/adm/email/critical/'.$what[0];      $lowerurl='/adm/email?critical=display';
         }          }
     }      }
   
 # ------------------------------------------------------------ Get cookie ready  # ------------------------------------------------------------ Get cookie ready
   
       if ($public or $lowerurl eq 'noredirect') { return $cookie; }
   
     $cookie="lonID=$cookie; path=/";      $cookie="lonID=$cookie; path=/";
 # -------------------------------------------------------- Menu script and info  # -------------------------------------------------------- Menu script and info
     my $windowinfo=&Apache::lonmenu::open();      my $windowinfo=&Apache::lonmenu::open($clientos);
 # ------------------------------------------------------------- Info for Remote      my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
     my $configmenu=&Apache::lonmenu::rawconfig();      my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
       my $setflags=&Apache::lonmenu::setflags();
       my $maincall=&Apache::lonmenu::maincall();
       my $start_page=&Apache::loncommon::start_page('Successful Login',
     $startupremote,
     {'no_inline_link' => 1,});
       my $end_page  =&Apache::loncommon::end_page();
   
       my $continuelink;
       if (($env{'browser.interface'} eq 'textual') ||
           ($env{'environment.remote'} eq 'off')) {
    $continuelink="<a href=\"$lowerurl\">".&mt('Continue')."</a>";
       }
 # ------------------------------------------------- Output for successful login  # ------------------------------------------------- Output for successful login
   
     $r->send_cgi_header(<<ENDHEADER);      &Apache::loncommon::content_type($r,'text/html');
 Content-type: text/html      $r->header_out('Set-cookie' => $cookie);
 Set-cookie: $cookie      $r->send_http_header;
   
 ENDHEADER      my %lt=&Apache::lonlocal::texthash(
          'wel' => 'Welcome',
          'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up',
          'pro' => 'Problems',
          'log' => 'loginproblems.html',
          );
     $r->print(<<ENDSUCCESS);      $r->print(<<ENDSUCCESS);
 <html>  $start_page
 <head>  $setflags
 <title>Successful Login to the LearningOnline Network with CAPA</title>  
 <script>  
   
 // --------------------------------------------- Checks if server frame defined  
   
 function checkdef() {  
    if ((menuloaded==0) && (tim==0)) { setTimeout('checkdef()',100); }  
 }  
   
 // ---------------------------------------------------------- The wait function  
   
 function wait() {  
    if ((menuloaded==1) || (tim==1)) {  
       if (tim==0) {  
          clearTimeout(canceltim);  
          $configmenu  
          window.location='$lowerurl';    
       } else {  
          alert("Remote Control Timed Out.");  
       }  
    } else {  
       setTimeout('wait();',100);  
    }  
 }  
   
 function main() {  
    canceltim=setTimeout('tim=1;',20000);  
    checkdef();  
    wait();  
 }  
   
 </script>  
 </head>  
 <body bgcolor="#FFFFFF" onLoad="main();">  
 <script>  
     menuloaded=0;  
     tim=0;  
 </script>  
 $windowinfo  $windowinfo
 <h1>Welcome!</h1>  <h1>$lt{'wel'}</h1>
 </body>  $lt{'mes'}.<p>
 </html>  <a href="/adm/$lt{'log'}">$lt{'pro'}?</a></p>
   $remoteinfo
   $maincall
   $continuelink
   $end_page
 ENDSUCCESS  ENDSUCCESS
 }  }
   
Line 193  ENDSUCCESS Line 257  ENDSUCCESS
   
 sub failed {  sub failed {
     my ($r,$message) = @_;      my ($r,$message) = @_;
     $r->send_cgi_header(<<ENDFHEADER);      my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
 Content-type: text/html      {'no_inline_link' => 1,});
       my $end_page   = &Apache::loncommon::end_page();
   
       my %lt=('sorry'  => &mt('Sorry ...'),
       'please' => 
       &mt('Please [_1]log in again[_2].',
    "<a href=\"/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}\">",
    '</a>'),
       'problemspage' => &mt('loginproblems.html'),
       'problems'     => 'Problems',
       );
       &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;
   
 ENDFHEADER  
     $r->print(<<ENDFAILED);      $r->print(<<ENDFAILED);
 <html>  $start_page
 <head>  <h1>$lt{'sorry'}</h1>
 <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>  <p><b>$message</b></p>
 </head>  <p>$lt{'please'}</p>
 <html>  <p>
 <body bgcolor="#FFFFFF">  <a href="/adm/$lt{'problemspage'}">$lt{'problems'}</a></p>
 <h1>Sorry ...</h1>  $end_page
 <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>  
 </body>  
 </html>  
 ENDFAILED  ENDFAILED
 }  }
   
   # ------------------------------------------------------------------ Rerouting!
   
   sub reroute {
       my ($r) = @_;
       &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;
       my $msg='<h1>Sorry ...</h1>
                Please <a href="/">log in again</a>.';
       &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
   }
   
 # ---------------------------------------------------------------- Main handler  # ---------------------------------------------------------------- Main handler
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
   
   # 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 %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
       my $lonid=$cookies{'lonID'};
       my $cookie;
       if ($lonid) {
    my $handle=$lonid->value;
           $handle=~s/\W//g;
           my $lonidsdir=$r->dir_config('lonIDsDir');
           if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
   # Indeed, a valid token is found
       &Apache::loncommon::content_type($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(<<ENDFAILED);
   $start_page
   <h1>You are already logged in</h1>
   <p>Please either <a href="/adm/roles">continue the current session</a> or
   <a href="/adm/logout">logout</a>.</p>
   <p>
   <a href="/adm/loginproblems.html">Problems?</a></p>
   $end_page
   ENDFAILED
              return OK;
    }
       }
   
   # ---------------------------------------------------- No valid token, continue
   
   
     my $buffer;      my $buffer;
     $r->read($buffer,$r->header_in('Content-length'));      $r->read($buffer,$r->header_in('Content-length'),0);
     my @pairs=split(/&/,$buffer);      my @pairs=split(/&/,$buffer);
     my $pair; my $name; my $value; my %FORM;      my $pair; my $name; my $value;
       undef %FORM;
       %FORM=();
     foreach $pair (@pairs) {      foreach $pair (@pairs) {
        ($name,$value) = split(/=/,$pair);         ($name,$value) = split(/=/,$pair);
        $value =~ tr/+/ /;         $value =~ tr/+/ /;
Line 227  sub handler { Line 352  sub handler {
        $FORM{$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.');
         return OK;          return OK;
     }      }
   
   # split user logging in and "su"-user
   
       ($FORM{'uname'},$FORM{'suname'})=split(/\:/,$FORM{'uname'});
     $FORM{'uname'} =~ s/\W//g;      $FORM{'uname'} =~ s/\W//g;
       $FORM{'suname'} =~ s/\W//g;
     $FORM{'udom'}  =~ s/\W//g;      $FORM{'udom'}  =~ s/\W//g;
   
     my $role   = $r->dir_config('lonRole');      my $role   = $r->dir_config('lonRole');
Line 244  sub handler { Line 374  sub handler {
                                       $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.');
         return OK;          return OK;
       } else {
    my $reply = &Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},
      $FORM{'serverid'});
           if ( $reply ne 'ok' ) {
               &failed($r,'Session could not be opened.');
       &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $FORM{'serverid'}." to get login token");
       return OK;
    }
     }      }
       
     my ($key,$firsturl)=split(/&/,$tmpinfo);      my ($key,$firsturl)=split(/&/,$tmpinfo);
   
     my $keybin=pack("H16",$key);      my $keybin=pack("H16",$key);
   
     my $cipher=new DES $keybin;      my $cipher;
       if ($Crypt::DES::VERSION>=2.03) {
     my $upass=$cipher->decrypt(   $cipher=new Crypt::DES $keybin;
        unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));      }
       else {
    $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))));
   
     $upass.=$cipher->decrypt(   $chunk.=
        unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},16,16))));
   
     $upass=substr($upass,1,ord(substr($upass,0,1)));   $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
    $upass.=$chunk;
       }
   
 # ---------------------------------------------------------------- Authenticate  # ---------------------------------------------------------------- Authenticate
     my $authhost=Apache::lonnet::authenticate($FORM{'uname'},      my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
Line 270  sub handler { Line 416  sub handler {
 # --------------------------------------------------------------------- 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.');
         return OK;          return OK;
     }      }
   
     if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {      if (($firsturl eq '') || 
  $firsturl='/res/adm/pages/index.html';   ($firsturl=~/^\/adm\/(logout|remote)/)) {
    $firsturl='/adm/roles';
     }      }
   # --------------------------------- Are we attempting to login as somebody else?
     success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);      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);
     return OK;      return OK;
 }  }
   
Removed from v.1.19  
changed lines
  Added in v.1.79

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