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Diff for /loncom/auth/lonauth.pm between versions 1.13 and 1.67

version 1.13, 2000/10/09 19:43:38 version 1.67, 2005/06/07 02:14:28
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 Gerd Kortemeyer  # Copyright Michigan State University Board of Trustees
   #
   # 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 Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File;  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 Apache::lonlocal;
   
   my %FORM;
   
 # ------------------------------------------------------------ Successful login  # ------------------------------------------------------------ Successful login
   
Line 22  sub success { Line 50  sub success {
     my $lonids=$r->dir_config('lonIDsDir');      my $lonids=$r->dir_config('lonIDsDir');
   
 # See if old ID present, if so, remove  # See if old ID present, if so, remove
     my $cookie;  
     while ($cookie=<$lonids/$username\_*\_$domain\_$authhost.id>) {      my $filename;
  unlink($cookie);      opendir(DIR,$lonids);
       while ($filename=readdir(DIR)) {
          if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
     unlink($lonids.'/'.$filename);
          }
     }      }
       closedir(DIR);
   
 # Give them a new cookie  # Give them a new cookie
   
       my $cookie;
     my $now=time;      my $now=time;
     $cookie="$username\_$now\_$domain\_$authhost";      $cookie="$username\_$now\_$domain\_$authhost";
   
Line 38  sub success { Line 72  sub success {
   
 # ------------------------------------ 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;
                                       $authhost);      my %userenv=Apache::lonnet::dump('environment',$domain,$username);
     if (($userenv eq 'con_lost') ||       my ($tmp) = keys(%userenv);
         ($userenv =~ /^error\:/)) {      if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
         $userenv='';   foreach my $key (keys(%userenv)) {
     }      $userenv.="environment.$key=$userenv{$key}\n";
     $userenv=~s/\&/\nenvironment\./g;   }
     if ($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 $idf=Apache::File->new(">$lonids/$cookie.id");
             if ($userenv ne '') { print $idf "$userenv\n"; }   unless (flock($idf,LOCK_EX)) {
             print $idf "user.name=$username\n";      &Apache::lonnet::logthis("<font color=blue>WARNING: ".
             print $idf "user.domain=$domain\n";     'Could not obtain exclusive lock in lonauth: '.$!);
             print $idf "user.home=$authhost\n";      $idf->close();
             print $idf "browser.type=$clientbrowser\n";      return 'error: '.$!;
             print $idf "browser.version=$clientversion\n";   }
             print $idf "browser.mathml=$clientmathml\n";   if ($userenv ne '') { print $idf "$userenv\n"; }
             print $idf "browser.os=$clientos\n";   print $idf "user.name=$username\n";
             if ($userroles ne '') { print $idf "$userroles"; }   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 "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 ($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,
                          "Login $ENV{'REMOTE_ADDR'}");                           "Login $ENV{'REMOTE_ADDR'}");
   
   # ------------------------------------------------- Check for critical messages
   
       my @what=&Apache::lonnet::dump('critical',$domain,$username);
       if ($what[0]) {
    if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
       $lowerurl='/adm/email?critical=display';
           }
       }
   
 # ------------------------------------------------------------ Get cookie ready  # ------------------------------------------------------------ Get cookie ready
   
     $cookie="lonID=$cookie; path=/";      $cookie="lonID=$cookie; path=/";
 # -------------------------------------------------------- Menu script and info  # -------------------------------------------------------- Menu script and info
       my $windowinfo=&Apache::lonmenu::open($clientos);
     my $windowinfo=&Apache::lonmenu::open();      my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
       my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
       my $setflags=&Apache::lonmenu::setflags();
       my $maincall=&Apache::lonmenu::maincall();
       my $bodytag=&Apache::loncommon::bodytag('Successful Login');
       my $add=&addcontent();
       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);      $r->send_cgi_header(<<ENDHEADER);
 Content-type: text/html  Content-type: text/html$add
 Set-cookie: $cookie  Set-cookie: $cookie
   
 ENDHEADER  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);      $r->print(<<ENDSUCCESS);
 <html>  <html>
 <head>  <head>
 <title>Successful Login to the LearningOnline Network with CAPA</title>  <title>Successful Login to the LearningOnline Network with CAPA</title>
 <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$lowerurl">  $startupremote
 </head>  </head>
 <body bgcolor="#FFFFFF">  $bodytag
     $windowinfo  $setflags
 <h1>Welcome!</h1>  $windowinfo
   <h1>$lt{'wel'}</h1>
   $lt{'mes'}.<p>
   <a href="/adm/$lt{'log'}">$lt{'pro'}?</a></p>
   $remoteinfo
   $maincall
   $continuelink
 </body>  </body>
 </html>  </html>
 ENDSUCCESS  ENDSUCCESS
Line 129  ENDSUCCESS Line 223  ENDSUCCESS
   
 sub failed {  sub failed {
     my ($r,$message) = @_;      my ($r,$message) = @_;
       my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login');
       my $add=&addcontent();
     $r->send_cgi_header(<<ENDFHEADER);      $r->send_cgi_header(<<ENDFHEADER);
 Content-type: text/html  Content-type: text/html$add
   
 ENDFHEADER  ENDFHEADER
     $r->print(<<ENDFAILED);      $r->print(<<ENDFAILED);
Line 138  ENDFHEADER Line 234  ENDFHEADER
 <head>  <head>
 <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>  <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
 </head>  </head>
 <html>  $bodytag
 <body bgcolor="#FFFFFF">  
 <h1>Sorry ...</h1>  <h1>Sorry ...</h1>
 <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>  <p><b>$message</b></p>
   <p>Please <a href="/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}">log in again</a>.</p>
   <p>
   <a href="/adm/loginproblems.html">Problems?</a></p>
 </body>  </body>
 </html>  </html>
 ENDFAILED  ENDFAILED
 }  }
   
   # --------------------------------------------------------------------- Charset
   
   sub addcontent {
       my $encoding=&Apache::lonlocal::current_encoding;
       if ($encoding) {
    return '; charset='.$encoding;
       } else {
    return '';
       }
   }
   
   # ------------------------------------------------------------------ Rerouting!
   
   sub reroute {
       my $r=shift;
       my $bodytag=&Apache::loncommon::bodytag('Rerouting');
       $r->send_cgi_header(<<ENDRFHEADER);
   Content-type: text/html
   
   ENDRFHEADER
       $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;
   
   # 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
       $r->send_cgi_header(<<ENDFHEADER);
   Content-type: text/html
   
   ENDFHEADER
       my $bodytag=&Apache::loncommon::bodytag('Already logged in');
       $r->print(<<ENDFAILED);
   <html>
   <head>
   <title>Already logged in</title>
   </head>
   $bodytag
   <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>
   </body>
   </html>
   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 163  sub handler { Line 340  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 180  sub handler { Line 362  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 {
           unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},
                                            $FORM{'serverid'}) eq 'ok') {
               &failed($r,'Session could not be opened.');
    }
     }      }
       
     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 206  sub handler { Line 401  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.1.13  
changed lines
  Added in v.1.67

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