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Diff for /loncom/auth/loncacc.pm between versions 1.4 and 1.21

version 1.4, 2000/01/06 15:35:58 version 1.21, 2002/02/26 21:01:33
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 # The LearningOnline Network  # The LearningOnline Network
 # Cookie Based Access Handler for Construction Area  # Cookie Based Access Handler for Construction Area
 # (lonacc: 5/21/99,5/22,5/29,5/31 Gerd Kortemeyer)  # (lonacc: 5/21/99,5/22,5/29,5/31 Gerd Kortemeyer)
   #
   # $Id$
   #
   # 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/
   #
   # YEAR=2000
 # 6/15,16/11,22/11,  # 6/15,16/11,22/11,
 # 01/06 Gerd Kortemeyer  # YEAR=2001
   # 01/06,01/11,6/1,9/25,9/28,11/22,12/25,12/26,
   # 01/06/01,05/04,05/05,05/09 Gerd Kortemeyer
   # 12/21 Scott Harrison
   # YEAR=2002
   # 1/4 Gerd Kortemeyer
   ###
   
 package Apache::loncacc;  package Apache::loncacc;
   
 use strict;  use strict;
 use Apache::Constants qw(:common :http);  use Apache::Constants qw(:common :http :methods);
   use Apache::File;
 use CGI::Cookie();  use CGI::Cookie();
   use Fcntl qw(:flock);
   
   sub constructaccess {
       my ($url,$ownerdomain)=@_;
       my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)/);
       unless (($ownername) && ($ownerdomain)) { return ''; }
   
       if (($ownername eq $ENV{'user.name'}) &&
           ($ownerdomain eq $ENV{'user.domain'})) {
    return ($ownername,$ownerdomain);
       }
   
       my $capriv='user.priv.ca./'.
                  $ownerdomain.'/'.$ownername.'./'.
          $ownerdomain.'/'.$ownername;
       foreach (keys %ENV) {
           if ($_ eq $capriv) {
              return ($ownername,$ownerdomain);
           }
       }
   
       return '';
   }
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
Line 21  sub handler { Line 77  sub handler {
         $handle=~s/\W//g;          $handle=~s/\W//g;
         my $lonidsdir=$r->dir_config('lonIDsDir');          my $lonidsdir=$r->dir_config('lonIDsDir');
         if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {          if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
             my $ownername=$requrl;  
             $ownername=~s/\/\~(\w+).*/\1/;  
             my $ownerdomain=$r->dir_config('lonDefDomain');  
             my @handleparts=split(/\_/,$handle);  
             my $username=$handleparts[0];  
             my $domain=$handleparts[2];  
             if (($username ne $ownername) || ($domain ne $ownerdomain)) {  
                 $r->log_reason  
                    ("$username at $domain not authorized", $r->filename);   
         return HTTP_NOT_ACCEPTABLE;  
             }  
             my @profile;              my @profile;
     {      {
              my $idf=Apache::File->new("$lonidsdir/$handle.id");               my $idf=Apache::File->new("$lonidsdir/$handle.id");
                flock($idf,LOCK_SH);
              @profile=<$idf>;               @profile=<$idf>;
                $idf->close();
     }      }
             my $envi;              my $envi;
             for ($envi=0;$envi<=$#profile;$envi++) {              for ($envi=0;$envi<=$#profile;$envi++) {
  chomp($profile[$envi]);   chomp($profile[$envi]);
  my ($envname,$envvalue)=split(/=/,$profile[$envi]);   my ($envname,$envvalue)=split(/=/,$profile[$envi]);
                 $r->subprocess_env("$envname" => "$envvalue");                  $ENV{$envname} = $envvalue;
               }
               $ENV{'user.environment'} = "$lonidsdir/$handle.id";
               $ENV{'request.state'}    = "construct";
               $ENV{'request.filename'} = $r->filename;
   
               unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
                   $r->log_reason("Unauthorized $requrl", $r->filename); 
           return HTTP_NOT_ACCEPTABLE;
             }              }
             $r->subprocess_env("user.environment" => "$lonidsdir/$handle.id",  
                                "request.state"    => "construct",  # -------------------------------------------------------- Load POST parameters
                                "request.filename" => $r->filename);  
   
           my $buffer;
   
           $r->read($buffer,$r->header_in('Content-length'));
   
    unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
               my @pairs=split(/&/,$buffer);
               my $pair;
               foreach $pair (@pairs) {
                  my ($name,$value) = split(/=/,$pair);
                  $value =~ tr/+/ /;
                  $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
                  $name  =~ tr/+/ /;
                  $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
          &Apache::loncommon::add_to_env("form.$name",$value);
               } 
           } else {
       my $contentsep=$1;
               my @lines = split (/\n/,$buffer);
               my $name='';
               my $value='';
               my $fname='';
               my $fmime='';
               my $i;
               for ($i=0;$i<=$#lines;$i++) {
    if ($lines[$i]=~/^$contentsep/) {
       if ($name) {
                           chomp($value);
    if ($fname) {
       $ENV{"form.$name.filename"}=$fname;
                               $ENV{"form.$name.mimetype"}=$fmime;
                           } else {
                               $value=~s/\s+$//s;
                           }
    &Apache::loncommon::add_to_env("form.$name",$value);
                       }
                       if ($i<$#lines) {
    $i++;
                           $lines[$i]=~
    /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
                           $name=$1;
                           $value='';
                           if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
      $fname=$1;
                              if 
                               ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
         $fmime=$1;
                                 $i++;
      } else {
                                 $fmime='';
                              }
                           } else {
       $fname='';
                               $fmime='';
                           }
                           $i++;
                       }
                   } else {
       $value.=$lines[$i]."\n";
                   }
               }
    }
               $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
               $r->method_number(M_GET);
       $r->method('GET');
               $r->headers_in->unset('Content-length');
   
             return OK;               return OK; 
         } else {           } else { 
             $r->log_reason("Cookie $handle not valid", $r->filename)               $r->log_reason("Cookie $handle not valid", $r->filename) 
         };          };
     }      }
     $cookie=CGI::Cookie->new(-name  => 'lonURL',  
                              -value => $requrl,   # ----------------------------------------------- Store where they wanted to go
                              -path  => '/');  
     $r->err_headers_out->add('Set-Cookie' => $cookie);      $ENV{'request.firsturl'}=$requrl;
     return FORBIDDEN;      return FORBIDDEN;
 }  }
   
 1;  1;
 __END__  __END__
   
   =head1 NAME
   
   Apache::lonacc - Cookie Based Access Handler for Construction Area
   
   =head1 SYNOPSIS
   
   Invoked (for various locations) by /etc/httpd/conf/srm.conf:
   
    PerlAccessHandler       Apache::loncacc
   
   =head1 INTRODUCTION
   
   This module enables cookie based authentication for construction area
   and is used to control access for three (essentially equivalent) URIs.
   
    <LocationMatch "^/priv.*">
    <LocationMatch "^/\~.*">
    <LocationMatch "^/\~.*/$">
   
   Whenever the client sends the cookie back to the server, 
   if the cookie is missing or invalid, the user is re-challenged
   for login information.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 HANDLER SUBROUTINE
   
   This routine is called by Apache and mod_perl.
   
   =over 4
   
   =item *
   
   load POST parameters
   
   =item *
   
   store where they wanted to go (first url entered)
   
   =back
   
   =head1 OTHERSUBROUTINES
   
   =over 4
   
   =item *
   
   constructaccess($url,$ownerdomain) : See if the owner domain and name
   in the URL match those in the expected environment.  If so, return 
   two element list ($ownername,$ownerdomain).  Else, return null string.
   
   =back
   
   =cut
   
   
   
Removed from v.1.4  
changed lines
  Added in v.1.21

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