1: # The LearningOnline Network
2: # Access Handler for User File Transfers
3: #
4: # $Id: lontokacc.pm,v 1.13 2005/02/07 17:04:53 albertel 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: use IO::Socket;
36:
37: sub handler {
38: my $r = shift;
39: my $reqhost = $r->get_remote_host(REMOTE_NOLOOKUP);
40: my $netaddr=inet_aton($reqhost);
41: ($reqhost) = gethostbyaddr($netaddr,AF_INET);
42: if (!$reqhost) {
43: $r->log_reason("Unable to do hostname $reqhost lookup for ".$r->get_remote_host(REMOTE_NOLOOKUP));
44: return FORBIDDEN;
45: }
46: if ($reqhost eq 'localhost.localdomain') {
47: return OK;
48: }
49: my $readline;
50: my $lontabdir=$r->dir_config('lonTabDir');
51: {
52: my $fh;
53: unless ($fh=Apache::File->new("$lontabdir/hosts.tab")) {
54: $r->log_reason("Could not find host tab file");
55: return FORBIDDEN;
56: }
57: while ($readline=<$fh>) {
58: $readline=~s/\s*$//;
59: my ($id,$domain,$role,$name)=split(/:/,$readline);
60: if ($name =~ /\Q$reqhost\E/i) {
61: return OK;
62: }
63: }
64:
65: }
66: $r->log_reason("Invalid request for user file transfer from $reqhost",
67: $r->filename);
68: return FORBIDDEN;
69: }
70:
71: sub removefile {
72: my $r=shift;
73: if ($r->status==200) {
74: unlink($r->filename);
75: #&Apache::lonnet::logthis('Unlinking '.$r->filename);
76: } else {
77: &Apache::lonnet::logthis('Failed to transfer '.$r->filename);
78: }
79: }
80: 1;
81: __END__
82:
83:
84:
85:
86:
87:
88:
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