#!/usr/bin/perl

###############
#
#     This 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.
#
#     It 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 SquiVi2; if not, write to the Free Software
#     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#     Copyright 2004 Steffen Schoch (sschoch@users.sourceforge.net)
#     Modified by Michael Tremer for www.ipfire.org (mitch@ipfire.org, 2007)
#
###############

use strict;
use IPC::Open2;
use IO::Handle;

# define here your redirectors (use a comma sperated list)
my $redirectors = [ '/usr/bin/squidGuard', '/usr/sbin/updxlrator' ];

# Attention: keep in mind that the order of your redirectors is important.
# It doesn't make sense to scan for viruses on pages you restrict access to...
# So place first your tools which restrict access, then the tools which do the
# content filtering!


##### no need to change anything below this line #####

# init
$| = 1;
STDOUT->autoflush(1);
my $line;
my $return;
my $i;

# open progamms
my $pidlist = [];
my $rlist = [];
my $wlist = [];
for($i = 0; $i < @$redirectors; $i++) {
        $pidlist->[$i] = open2($rlist->[$i], $wlist->[$i], $redirectors->[$i]);
}

# wait for data...
while($line = <>) {
        for($i = 0; $i < @$redirectors; $i++) {
                $wlist->[$i]->print($line);
                $return = $rlist->[$i]->getline;
                last if($return ne "\n" and $return ne $line);
								# break if redirector changes data
        }
        print $return;
}
exit 0;