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Annotation of loncom/auth/lonracc.pm, revision 1.4

1.1       albertel    1: # The LearningOnline Network
                      2: # Access Handler for File Transfers
1.3       www         3: #
1.4     ! harris41    4: # $Id: lonracc.pm,v 1.3 2001/11/29 19:12:44 www Exp $
1.3       www         5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.1       albertel   28: # (lonacc: Cookie Based Access Handler
                     29: # 5/21/99,5/22,5/29,5/31,6/15 Gerd Kortemeyer)
1.2       www        30: # 6/16,6/18,7/3,
                     31: # 6/30/00 Gerd Kortemeyer
1.1       albertel   32: 
                     33: package Apache::lonracc;
                     34: 
                     35: use strict;
                     36: use Apache::Constants qw(:common :remotehost);
                     37: use Apache::File();
                     38: 
                     39: sub handler {
                     40:     my $r = shift;
                     41:     my $reqhost;
                     42:     unless ($reqhost=$r->get_remote_host(REMOTE_DOUBLE_REV)) {
                     43:        $r->log_reason("Spoof request");
                     44:        return FORBIDDEN;
                     45:     }
                     46:     my $readline;
                     47:     my $lontabdir=$r->dir_config('lonTabDir');
                     48:     {
                     49:        my $fh;
                     50:        unless ($fh=Apache::File->new("$lontabdir/hosts.tab")) {
                     51:           $r->log_reason("Could not find host tab file");
                     52:           return FORBIDDEN;
                     53:        }
                     54:        while ($readline=<$fh>) {
                     55:           my ($id,$domain,$role,$name,$ip)=split(/:/,$readline);
                     56:           if ($name =~ /$reqhost/i) {
                     57:               my $filename=$r->filename;
1.2       www        58:               if ((-e "$filename.$id") || ($filename=~/\.meta$/)) {
1.1       albertel   59: 	         return OK;
                     60:               } else {
                     61:                  $r->log_reason("$id not subscribed", $r->filename);
                     62:                  return FORBIDDEN;
                     63:               }
                     64:           }
                     65:        }
                     66: 
                     67:     }
                     68:     $r->log_reason("Invalid request for file transfer from $reqhost", 
                     69:                    $r->filename); 
                     70:     return FORBIDDEN;
                     71: }
                     72: 
                     73: 1;
                     74: __END__
                     75: 
1.4     ! harris41   76: =head1 NAME
        !            77: 
        !            78: Apache::lonracc - Access Handler for File Transfers
        !            79: 
        !            80: =head1 SYNOPSIS
        !            81: 
        !            82: Invoked by /etc/httpd/conf/loncapa.conf:
        !            83: 
        !            84:  <LocationMatch "^/raw.*">
        !            85:  PerlAccessHandler Apache::lonracc
        !            86:  </LocationMatch>
        !            87: 
        !            88: =head1 INTRODUCTION
        !            89: 
        !            90: This module enables authentication for file transfers and works
        !            91: against the /res tree.
        !            92: 
        !            93: Only lond invokes the /raw namespace through its subscribe function.
        !            94: 
        !            95: This is part of the LearningOnline Network with CAPA project
        !            96: described at http://www.lon-capa.org.
        !            97: 
        !            98: =head1 HANDLER SUBROUTINE
        !            99: 
        !           100: This routine is called by Apache and mod_perl.
        !           101: 
        !           102: =over 4
        !           103: 
        !           104: =item *
        !           105: 
        !           106: Determine requesting host
        !           107: 
        !           108: =item *
        !           109: 
        !           110: See whether or not the requesting host is subscribed.
        !           111: 
        !           112: =item *
        !           113: 
        !           114: Respond with status of request and make log entry in case of unallowed
        !           115: access.
        !           116: 
        !           117: =back
        !           118: 
        !           119: =cut
1.1       albertel  120: 
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                    126: