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Diff for /loncom/auth/loncacc.pm between versions 1.12 and 1.29

version 1.12, 2000/12/25 12:44:43 version 1.29, 2003/06/11 00:39:46
Line 1 Line 1
 # 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,
 # 01/06,01/11,6/1,9/25,9/28,11/22,12/25 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
   # YEAR=2002
   # 1/4 Gerd Kortemeyer
   ###
   
 package Apache::loncacc;  package Apache::loncacc;
   
 use strict;  use strict;
 use Apache::Constants qw(:common :http :methods);  use Apache::Constants qw(:common :http :methods REDIRECT);
 use Apache::File;  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 ''; }
       # We do not allow editing of previous versions of files.
       if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
       if (($ownername eq $ENV{'user.name'}) &&
           ($ownerdomain eq $ENV{'user.domain'})) {
    return ($ownername,$ownerdomain);
       }
   
       my $capriv='user.priv.ca./'.
                  $ownerdomain.'/'.$ownername.'./';
       foreach (keys %ENV) {
           if ($_ eq $capriv) {
              return ($ownername,$ownerdomain);
           }
       }
       return '';
   }
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     my $requrl=$r->uri;      my $requrl=$r->uri;
       $ENV{'request.editurl'}=$requrl;
     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));      my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
     my $lonid=$cookies{'lonID'};      my $lonid=$cookies{'lonID'};
     my $cookie;      my $cookie;
Line 22  sub handler { Line 76  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/\/(?:\~|priv\/)(\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 $idf=Apache::File->new("$lonidsdir/$handle.id");  
              @profile=<$idf>;  
     }  
             my $envi;  
             for ($envi=0;$envi<=$#profile;$envi++) {  
  chomp($profile[$envi]);  
  my ($envname,$envvalue)=split(/=/,$profile[$envi]);  
                 $ENV{$envname} = $envvalue;  
             }  
             $ENV{'user.environment'} = "$lonidsdir/$handle.id";  
             $ENV{'request.state'}    = "construct";  
             $ENV{'request.filename'} = $r->filename;  
   
 # -------------------------------------------------------- Load POST parameters  # ------------------------------------------------------ Initialize Environment
   
               &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
   
         my $buffer;  # -------------------------------------------------------------- Resource State
   
         $r->read($buffer,$r->header_in('Content-length'));              $ENV{'request.state'}    = "construct";
               $ENV{'request.filename'} = $r->filename;
   
  unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {              unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
             my @pairs=split(/&/,$buffer);                  $r->log_reason("Unauthorized $requrl", $r->filename); 
             my $pair;          return HTTP_NOT_ACCEPTABLE;
             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;  
                $ENV{"form.$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);  
                         $ENV{"form.$name"}=$value;  
  if ($fname) {  
     $ENV{"form.$name.filename"}=$fname;  
                             $ENV{"form.$name.mimetype"}=$fmime;  
                         }  
                     }  
                     if ($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";  
                 }  
             }              }
  }  # Construction space needs Remote to work
             $r->method_number(M_GET);              if ($ENV{'environment.remote'} eq 'off') {
     $r->method('GET');          $r->content_type('text/html');
             $r->headers_in->unset('Content-length');                  $r->header_out(Location => 
                       'http://'.$r->server->server_hostname.
                       '/adm/remote?action=launch&url='.
                       &Apache::lonnet::escape($requrl));
                   return REDIRECT;
               }
   
   # -------------------------------------------------------- Load POST parameters
   
       &Apache::loncommon::get_posted_cgi($r);
   
             return OK;               return OK; 
         } else {           } else { 
Line 129  sub handler { Line 119  sub handler {
 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/loncapa_apache.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.1.12  
changed lines
  Added in v.1.29

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