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Diff for /loncom/auth/lonauth.pm between versions 1.71 and 1.92

version 1.71, 2005/11/10 19:19:08 version 1.92, 2008/05/30 19:09:50
Line 29 Line 29
 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::loncommon();  use Apache::loncommon();
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::lonmenu();  use Apache::lonmenu();
   use Apache::createaccount;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
 use Apache::lonlocal;  use Apache::lonlocal;
 use POSIX qw(mktime);   
   
 my %FORM;  
   
 # ------------------------------------------------------------ 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) = @_;
   
     my $public=($username eq 'public' && $domain eq 'public');  
   
 # See if old ID present, if so, remove  
   
     my ($filename,$cookie,$userroles);  
     my $now=time;  
   
     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);  
   
 # Give them a new cookie  
   
  $cookie="$username\_$now\_$domain\_$authhost";  # ------------------------------------------------------------ Get cookie ready
           my $cookie =
 # Initialize roles   &Apache::loncommon::init_user_environment($r, $username, $domain,
     $authhost, $form,
  $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);    {'extra_env' => $extra_env,});
     }  
 # ------------------------------------ Check browser type and MathML capability  
   
     my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,  
         $clientunicode,$clientos) = &Apache::loncommon::decode_user_agent($r);  
   
 # -------------------------------------- Any accessibility options to remember?      my $public=($username eq 'public' && $domain eq 'public');
     if (($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  
   
     my $userenv;      if ($public or $lowerurl eq 'noredirect') { return $cookie; }
     my %userenv=Apache::lonnet::dump('environment',$domain,$username);  
     my ($tmp) = keys(%userenv);  
     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {  
  foreach my $key (keys(%userenv)) {  
     $userenv.="environment.$key=$userenv{$key}\n";  
  }  
     }  
     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  
   
     {  
  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 $idf "browser.unicode=$clientunicode\n";  
  print $idf "browser.os=$clientos\n";  
         if ($FORM{'localpath'}) {  
            print $idf "browser.localpath=$FORM{'localpath'}\n";  
            print $idf "browser.localres=$FORM{'localres'}\n";  
         }  
         print $idf "server.domain=".$r->dir_config('lonDefDomain')."\n";  
         my $timezone='UTC';  
         my $timediff=POSIX::mktime(localtime())-POSIX::mktime(gmtime());  
         if ($timediff) {  
     my $hours=int($timediff/3600);  
             my $minutes=abs(int(($timediff-$hours*3600)/60));  
             my $sign="+";  
             if ($timediff<0) {  
  $sign="-";  
     }  
             $timezone.=$sign.abs($hours).':'.substr("0$minutes",-2);  
  }  
         print $idf "server.timezone=$timezone\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 $idf "request.role.adv=$env{'user.adv'}\n";  
  print $idf "request.host=$ENV{'REMOTE_ADDR'}\n";  
  if ($public) {  
     print $idf "environment.remote=off\n";  
  }  
  if ($FORM{'interface'}) {  
     $FORM{'interface'}=~s/\W//gs;  
     print $idf "browser.interface=$FORM{'interface'}\n";  
     $env{'browser.interface'}=$FORM{'interface'};  
     foreach ('imagesuppress','appletsuppress',  
      'embedsuppress','fontenhance','blackwhite') {  
  if (($FORM{$_} eq 'true') ||  
     ($userenv{$_} eq 'on')) {  
     print $idf "browser.$_=on\n";  
  }  
     }  
  }  
  if ($userroles ne '') { print $idf "$userroles"; }  
  $idf->close();  
     }  
     $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 208  sub success { Line 71  sub success {
     }      }
   
 # ------------------------------------------------------------ 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 $windowinfo=&Apache::lonmenu::open($clientos);      my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
     my $startupremote=&Apache::lonmenu::startupremote($lowerurl);      my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
     my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);      my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
     my $setflags=&Apache::lonmenu::setflags();      my $setflags=&Apache::lonmenu::setflags();
     my $maincall=&Apache::lonmenu::maincall();      my $maincall=&Apache::lonmenu::maincall();
     my $bodytag=&Apache::loncommon::bodytag('Successful Login');      my $start_page=&Apache::loncommon::start_page('Successful Login',
     my $add=&addcontent();    $startupremote,
     {'no_inline_link' => 1,});
       my $end_page  =&Apache::loncommon::end_page();
   
     my $continuelink;      my $continuelink;
     if (($env{'browser.interface'} eq 'textual') ||      if (($env{'browser.interface'} eq 'textual') ||
         ($env{'environment.remote'} eq 'off')) {          ($env{'environment.remote'} eq 'off')) {
Line 227  sub success { Line 90  sub success {
     }      }
 # ------------------------------------------------- Output for successful login  # ------------------------------------------------- Output for successful login
   
     $r->send_cgi_header(<<ENDHEADER);      &Apache::loncommon::content_type($r,'text/html');
 Content-type: text/html$add      $r->header_out('Set-cookie' => $cookie);
 Set-cookie: $cookie      $r->send_http_header;
   
 ENDHEADER  
     my %lt=&Apache::lonlocal::texthash(      my %lt=&Apache::lonlocal::texthash(
        'wel' => 'Welcome',         'wel' => 'Welcome',
        'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up',         'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.',
        'pro' => 'Problems',         'pro' => 'Login problems?',
        'log' => 'loginproblems.html',         'log' => 'loginproblems.html',
        );         );
     $r->print(<<ENDSUCCESS);      $r->print(<<ENDSUCCESS);
 <html>  $start_page
 <head>  
 <title>Successful Login to the LearningOnline Network with CAPA</title>  
 $startupremote  
 </head>  
 $bodytag  
 $setflags  $setflags
 $windowinfo  $windowinfo
 <h1>$lt{'wel'}</h1>  <h1>$lt{'wel'}</h1>
 $lt{'mes'}.<p>  $lt{'mes'}<p>
 <a href="/adm/$lt{'log'}">$lt{'pro'}?</a></p>  <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
 $remoteinfo  $remoteinfo
 $maincall  $maincall
 $continuelink  $continuelink
 </body>  $end_page
 </html>  
 ENDSUCCESS  ENDSUCCESS
 }  }
   
 # --------------------------------------------------------------- Failed login!  # --------------------------------------------------------------- Failed login!
   
 sub failed {  sub failed {
     my ($r,$message) = @_;      my ($r,$message,$form) = @_;
     my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login');      my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
     my $add=&addcontent();      {'no_inline_link' => 1,});
     $r->send_cgi_header(<<ENDFHEADER);      my $end_page   = &Apache::loncommon::end_page();
 Content-type: text/html$add      &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;
 ENDFHEADER      $r->print(
     $r->print(<<ENDFAILED);         $start_page
 <html>        .'<h1>'.&mt('Sorry ...').'</h1>'
 <head>        .'<p><b>'.&mt($message).'</b></p>'
 <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>        .'<p>'.&mt('Please [_1]log in again[_2].'
 </head>                  ,"<a href=\"/adm/login?username=$form->{'uname'}&domain=$form->{'udom'}\">",'</a>')
 $bodytag        .'</p>'
 <h1>Sorry ...</h1>        .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
 <p><b>$message</b></p>        .$end_page
 <p>Please <a href="/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}">log in again</a>.</p>      );
 <p>   }
 <a href="/adm/loginproblems.html">Problems?</a></p>  
 </body>  
 </html>  
 ENDFAILED  
 }  
   
 # --------------------------------------------------------------------- Charset  
   
 sub addcontent {  
     my $encoding=&Apache::lonlocal::current_encoding;  
     if ($encoding) {  
  return '; charset='.$encoding;  
     } else {  
  return '';  
     }  
 }  
   
 # ------------------------------------------------------------------ Rerouting!  # ------------------------------------------------------------------ Rerouting!
   
 sub reroute {  sub reroute {
     my $r=shift;      my ($r) = @_;
     my $bodytag=&Apache::loncommon::bodytag('Rerouting');      &Apache::loncommon::content_type($r,'text/html');
     $r->send_cgi_header(<<ENDRFHEADER);      $r->send_http_header;
 Content-type: text/html      my $msg='<h1>'.&mt('Sorry ...').'</h1>'
              .&mt('Please [_1]log in again[_2].');
 ENDRFHEADER      &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
     $r->print(<<ENDRFAILED);  
 <html>  
 <head>  
 <title>Rerouting Login to the LearningOnline Network with CAPA</title>  
 </head>  
 $bodytag  
 <h1>Sorry ...</h1>  
 Please <a href="/">log in again</a>.  
 </body>  
 </html>  
 ENDRFAILED  
 }  }
   
 # ---------------------------------------------------------------- Main handler  # ---------------------------------------------------------------- Main handler
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
       my $form;
 # Are we re-routing?  # Are we re-routing?
     if (-e '/home/httpd/html/lon-status/reroute.txt') {      if (-e '/home/httpd/html/lon-status/reroute.txt') {
  &reroute($r);   &reroute($r);
Line 331  sub handler { Line 160  sub handler {
     &Apache::lonlocal::get_language_handle($r);      &Apache::lonlocal::get_language_handle($r);
   
 # -------------------------------- Prevent users from attempting to login twice  # -------------------------------- Prevent users from attempting to login twice
     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));      my $handle = &Apache::lonnet::check_for_valid_session($r);
     my $lonid=$cookies{'lonID'};      if ($handle ne '') {
     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  # Indeed, a valid token is found
     $r->send_cgi_header(<<ENDFHEADER);   &Apache::loncommon::content_type($r,'text/html');
 Content-type: text/html   $r->send_http_header;
    my $start_page = 
 ENDFHEADER      &Apache::loncommon::start_page('Already logged in');
     my $bodytag=&Apache::loncommon::bodytag('Already logged in');   my $end_page = 
     $r->print(<<ENDFAILED);      &Apache::loncommon::end_page();
 <html>          $r->print(
 <head>             $start_page
 <title>Already logged in</title>            .'<h1>'.&mt('You are already logged in!').'</h1>'
 </head>            .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]logout[_4].'
 $bodytag                      ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
 <h1>You are already logged in</h1>            .'</p>'
 <p>Please either <a href="/adm/roles">continue the current session</a> or            .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
 <a href="/adm/logout">logout</a>.</p>            .$end_page
 <p>          );
 <a href="/adm/loginproblems.html">Problems?</a></p>          return OK;
 </body>  
 </html>  
 ENDFAILED  
            return OK;  
  }  
     }      }
   
 # ---------------------------------------------------- No valid token, continue  # ---------------------------------------------------- No valid token, continue
   
   
     my $buffer;      my $buffer;
     $r->read($buffer,$r->header_in('Content-length'),0);      if ($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;      }
     undef %FORM;      my %form;
     %FORM=();      foreach my $pair (split(/&/,$buffer)) {
     foreach $pair (@pairs) {         my ($name,$value) = split(/=/,$pair);
        ($name,$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{'upass0'}) || (!$FORM{'udom'})) {      if ((!$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;
     }      }
   
 # split user logging in and "su"-user  # split user logging in and "su"-user
   
     ($FORM{'uname'},$FORM{'suname'})=split(/\:/,$FORM{'uname'});      ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
     $FORM{'uname'} =~ s/\W//g;      $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
     $FORM{'suname'} =~ s/\W//g;      $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
     $FORM{'udom'}  =~ s/\W//g;      $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');
Line 397  ENDFAILED Line 215  ENDFAILED
   
 # ---------------------------------------- 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($r,'Information needed to verify your login information is missing, inaccessible or expired.');   &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
         return OK;          return OK;
     } else {      } else {
         unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},   my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
                                          $FORM{'serverid'}) eq 'ok') {     $form{'serverid'});
             &failed($r,'Session could not be opened.');          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 ". $form{'serverid'}." to get login token");
       return OK;
  }   }
     }      }
     my ($key,$firsturl)=split(/&/,$tmpinfo);      my ($key,$firsturl)=split(/&/,$tmpinfo);
Line 423  ENDFAILED Line 244  ENDFAILED
     my $upass='';      my $upass='';
     for (my $i=0;$i<=2;$i++) {      for (my $i=0;$i<=2;$i++) {
  my $chunk=   my $chunk=
     $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},0,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
   
  $chunk.=   $chunk.=
     $cipher->decrypt(unpack("a8",pack("H16",substr($FORM{'upass'.$i},16,16))));      $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
   
  $chunk=substr($chunk,1,ord(substr($chunk,0,1)));   $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
  $upass.=$chunk;   $upass.=$chunk;
     }      }
   
 # ---------------------------------------------------------------- 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 ($output,$checkfail) = &Apache::createaccount::username_check($form{'uname'},
                                                                     $form{'udom'},$domdesc);
               &Apache::loncommon::content_type($r,'text/html');
               $r->send_http_header;
               &Apache::createaccount::print_header($r,$start_page);
               my $msg = '<h4>'.&mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain.').'<br />';
               if ($checkfail) {
                   $msg .= &mt('A LON-CAPA account may not be created with the username you used.');
               } else {
                   $msg .= &mt('To create one, use the table below to provide information about yourself (if appropriate), then click the "Create LON-CAPA account" button.');
               }
               $r->print('<h4>'.$msg.'</h4>'.$output);
               $r->print(&Apache::loncommon::end_page());
               return OK;
           } else {
               &failed($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 (($firsturl eq '') ||       if (($firsturl eq '') || 
Line 449  ENDFAILED Line 312  ENDFAILED
  $firsturl='/adm/roles';   $firsturl='/adm/roles';
     }      }
 # --------------------------------- Are we attempting to login as somebody else?  # --------------------------------- Are we attempting to login as somebody else?
     if ($FORM{'suname'}) {      if ($form{'suname'}) {
 # ------------ see if the original user has enough privileges to pull this stunt  # ------------ see if the original user has enough privileges to pull this stunt
  if (&Apache::lonnet::privileged($FORM{'uname'},$FORM{'udom'})) {   if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
 # ---------------------------------------------------- see if the su-user exists  # ---------------------------------------------------- see if the su-user exists
     unless (&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'})      unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
  eq 'no_host') {   eq 'no_host') {
  &Apache::lonnet::logthis(&Apache::lonnet::homeserver($FORM{'suname'},$FORM{'udom'}));   &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
 # ------------------------------ see if the su-user is not too highly privileged  # ------------------------------ see if the su-user is not too highly privileged
  unless (&Apache::lonnet::privileged($FORM{'suname'},$FORM{'udom'})) {   unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
 # -------------------------------------------------------- actually switch users  # -------------------------------------------------------- actually switch users
     &Apache::lonnet::logperm('User '.$FORM{'uname'}.' at '.$FORM{'udom'}.      &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
  ' logging in as '.$FORM{'suname'});   ' logging in as '.$form{'suname'});
     $FORM{'uname'}=$FORM{'suname'};      $form{'uname'}=$form{'suname'};
  } else {   } else {
     &Apache::lonnet::logthis('Attempted switch user to privileged user');      &Apache::lonnet::logthis('Attempted switch user to privileged user');
  }   }
Line 470  ENDFAILED Line 333  ENDFAILED
     &Apache::lonnet::logthis('Non-privileged user attempting switch user');      &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.1.71  
changed lines
  Added in v.1.92

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