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Diff for /loncom/auth/lonracc.pm between versions 1.1 and 1.11

version 1.1, 1999/10/13 17:48:52 version 1.11, 2004/03/31 17:42:21
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # Access Handler for File Transfers  # Access Handler for File Transfers
   #
   # $Id$
   #
   # 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/
   #
 # (lonacc: Cookie Based Access Handler  # (lonacc: Cookie Based Access Handler
 # 5/21/99,5/22,5/29,5/31,6/15 Gerd Kortemeyer)  # 5/21/99,5/22,5/29,5/31,6/15 Gerd Kortemeyer)
 # 6/16,6/18,7/3 Gerd Kortemeyer  # 6/16,6/18,7/3,
   # 6/30/00 Gerd Kortemeyer
   
 package Apache::lonracc;  package Apache::lonracc;
   
 use strict;  use strict;
 use Apache::Constants qw(:common :remotehost);  use Apache::Constants qw(:common :remotehost);
   use Apache::lonnet();
 use Apache::File();  use Apache::File();
   
   sub subscribed {
       my ($filename,$id) = @_;
       my $found=0;
       my $expr='^'.$id.':'.$Apache::lonnet::hostip{$id}.':';
       $expr =~ s/\./\\\./g;
       my $sh;
       if ($sh=Apache::File->new("$filename.subscription")) {
    while (my $subline=<$sh>) { if ($subline =~ /$expr/) { $found=1; } }
    $sh->close();
       }
       return $found;
   }
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     my $reqhost;      my $reqhost = $r->get_remote_host(REMOTE_DOUBLE_REV);
     unless ($reqhost=$r->get_remote_host(REMOTE_DOUBLE_REV)) {      if (!$reqhost && $r->get_remote_host(REMOTE_NOLOOKUP) eq $r->get_server_name()) { 
        $r->log_reason("Spoof request");          $reqhost = $r->get_server_name();
       } 
       unless ($reqhost) {
          $r->log_reason("Spoof request from ".$ENV{'REMOTE_ADDR'});
        return FORBIDDEN;         return FORBIDDEN;
     }      }
     my $readline;      my $readline;
Line 25  sub handler { Line 68  sub handler {
           $r->log_reason("Could not find host tab file");            $r->log_reason("Could not find host tab file");
           return FORBIDDEN;            return FORBIDDEN;
        }         }
          my $return;
          my @ids=();
        while ($readline=<$fh>) {         while ($readline=<$fh>) {
           my ($id,$domain,$role,$name,$ip)=split(/:/,$readline);            my ($id,$domain,$role,$name,$ip)=split(/:/,$readline);
           if ($name =~ /$reqhost/i) {            if ($name =~ /$reqhost/i) {
               my $filename=$r->filename;                my $filename=$r->filename;
               if (-e "$filename.$id") {                my $uri =$r->uri;
                 if ((-e "$filename.$id") ||
     &subscribed($filename,$id) ||
     ($filename=~/\.meta$/) ||
                     ($uri=~m|^/raw/uploaded|)) {
          return OK;           return OK;
               } else {                } else {
                  $r->log_reason("$id not subscribed", $r->filename);                   $return=FORBIDDEN;
                  return FORBIDDEN;   push(@ids,$id);
               }                }
           }            }
        }         }
          if ($return == FORBIDDEN) {
      $r->log_reason(join(':',@ids)." not subscribed", $r->filename);
      return FORBIDDEN;
          }
     }      }
     $r->log_reason("Invalid request for file transfer from $reqhost",       $r->log_reason("Invalid request for file transfer from $reqhost", 
                    $r->filename);                      $r->filename); 
Line 47  sub handler { Line 99  sub handler {
 1;  1;
 __END__  __END__
   
   =head1 NAME
   
   Apache::lonracc - Access Handler for File Transfers
   
   =head1 SYNOPSIS
   
   Invoked by /etc/httpd/conf/loncapa.conf:
   
    <LocationMatch "^/raw.*">
    PerlAccessHandler Apache::lonracc
    </LocationMatch>
   
   =head1 INTRODUCTION
   
   This module enables authentication for file transfers and works
   against the /res tree.
   
   Only lond invokes the /raw namespace through its subscribe function.
   
   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 *
   
   Determine requesting host
   
   =item *
   
   See whether or not the requesting host is subscribed.
   
   =item *
   
   Respond with status of request and make log entry in case of unallowed
   access.
   
   =back
   
   =cut
   
   
   
Removed from v.1.1  
changed lines
  Added in v.1.11

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