1: # The LearningOnline Network
2: # Access Handler for User File Transfers
3: #
4: # $Id: lontokacc.pm,v 1.18 2007/03/02 23:43:29 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 = $r->get_remote_host(REMOTE_NOLOOKUP);
40: my @hostids= &Apache::lonnet::get_hosts_from_ip($reqhost);
41: if (!@hostids && $reqhost ne '127.0.0.1' ) {
42: $r->log_reason("Unable to find a host for ".
43: $r->get_remote_host(REMOTE_NOLOOKUP));
44: return FORBIDDEN;
45: }
46: if ($reqhost eq '127.0.0.1') {
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: foreach my $hostid (@hostids) {
61: my $hostname=&Apache::lonnet::hostname($hostid);
62: if ($name =~ /^\Q$hostname\E$/i) {
63: return OK;
64: }
65: }
66: }
67:
68: }
69: $r->log_reason("Invalid request for user file transfer from $reqhost (".join(",",@hostids).")",
70: $r->filename);
71: return FORBIDDEN;
72: }
73:
74: sub removefile {
75: my $r=shift;
76: if ($r->status==200) {
77: unlink($r->filename);
78: #&Apache::lonnet::logthis('Unlinking '.$r->filename);
79: } else {
80: &Apache::lonnet::logthis('Failed to transfer '.$r->filename);
81: }
82: return OK;
83: }
84: 1;
85: __END__
86:
87:
88:
89:
90:
91:
92:
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