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Routines for file upload

    1: # The LearningOnline Network
    2: # Access Handler for User File Transfers
    3: #
    4: # $Id: lontokacc.pm,v 1.6 2002/08/08 13:45:21 www Exp $
    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: #
   28: 
   29: package Apache::lontokacc;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common :remotehost);
   33: use Apache::lonnet();
   34: use Apache::File();
   35: 
   36: sub handler {
   37:     my $r = shift;
   38:     my $reqhost;
   39:     unless ($reqhost=$r->get_remote_host(REMOTE_DOUBLE_REV)) {
   40:        $r->log_reason("Spoof request ".$reqhost);
   41:        return FORBIDDEN;
   42:     }
   43:     if ($reqhost eq 'localhost.localdomain') {
   44:        $r->register_cleanup(\&removefile);
   45:        return OK;
   46:     }
   47:     my $readline;
   48:     my $lontabdir=$r->dir_config('lonTabDir');
   49:     {
   50:        my $fh;
   51:        unless ($fh=Apache::File->new("$lontabdir/hosts.tab")) {
   52:           $r->log_reason("Could not find host tab file");
   53:           return FORBIDDEN;
   54:        }
   55:        while ($readline=<$fh>) {
   56:           my ($id,$domain,$role,$name,$ip)=split(/:/,$readline);
   57:           if ($name =~ /$reqhost/i) {
   58:              $r->register_cleanup(\&removefile); 
   59:              return OK; 
   60:           }
   61:        }
   62: 
   63:     }
   64:     $r->log_reason("Invalid request for user file transfer from $reqhost", 
   65:                    $r->filename); 
   66:     return FORBIDDEN;
   67: }
   68: 
   69: sub removefile {
   70:     my $r=shift;
   71:     if ($r->status==200) {
   72:         unlink($r->filename);
   73: 	&Apache::lonnet::logthis('Unlinking '.$r->filename);
   74:     } else {
   75:         &Apache::lonnet::logthis('Failed to transfer '.$r->filename);
   76:     }
   77: }
   78: 1;
   79: __END__
   80: 
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   86: