# The LearningOnline Network
# Access Handler for User File Transfers
#
# $Id: lontokacc.pm,v 1.13 2005/02/07 17:04:53 albertel Exp $
#
# 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/
#
package Apache::lontokacc;
use strict;
use Apache::Constants qw(:common :remotehost);
use Apache::lonnet();
use Apache::File();
use IO::Socket;
sub handler {
my $r = shift;
my $reqhost = $r->get_remote_host(REMOTE_NOLOOKUP);
my $netaddr=inet_aton($reqhost);
($reqhost) = gethostbyaddr($netaddr,AF_INET);
if (!$reqhost) {
$r->log_reason("Unable to do hostname $reqhost lookup for ".$r->get_remote_host(REMOTE_NOLOOKUP));
return FORBIDDEN;
}
if ($reqhost eq 'localhost.localdomain') {
return OK;
}
my $readline;
my $lontabdir=$r->dir_config('lonTabDir');
{
my $fh;
unless ($fh=Apache::File->new("$lontabdir/hosts.tab")) {
$r->log_reason("Could not find host tab file");
return FORBIDDEN;
}
while ($readline=<$fh>) {
$readline=~s/\s*$//;
my ($id,$domain,$role,$name)=split(/:/,$readline);
if ($name =~ /\Q$reqhost\E/i) {
return OK;
}
}
}
$r->log_reason("Invalid request for user file transfer from $reqhost",
$r->filename);
return FORBIDDEN;
}
sub removefile {
my $r=shift;
if ($r->status==200) {
unlink($r->filename);
#&Apache::lonnet::logthis('Unlinking '.$r->filename);
} else {
&Apache::lonnet::logthis('Failed to transfer '.$r->filename);
}
}
1;
__END__
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