###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2007 Michael Tremer & Christian Schmidt #
# #
# This program 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 3 of the License, or #
# (at your option) any later version. #
# #
# This program 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 this program. If not, see . #
# #
###############################################################################
use strict;
# enable only the following on debugging purpose
#use warnings;
require '/var/ipfire/general-functions.pl';
my %outfwsettings = ();
my %checked = ();
my %selected= () ;
my %netsettings = ();
my $errormessage = "";
my $configentry = "";
my @configs = ();
my @configline = ();
my $p2pentry = "";
my @p2ps = ();
my @p2pline = ();
my @proto = ();
my $CMD = "";
my $P2PSTRING = "";
my $DEBUG = 0;
my $configfile = "/var/ipfire/outgoing/rules";
my $p2pfile = "/var/ipfire/outgoing/p2protocols";
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
### Values that have to be initialized
$outfwsettings{'ACTION'} = '';
$outfwsettings{'VALID'} = 'yes';
$outfwsettings{'EDIT'} = 'no';
$outfwsettings{'NAME'} = '';
$outfwsettings{'SNET'} = '';
$outfwsettings{'SIP'} = '';
$outfwsettings{'SPORT'} = '';
$outfwsettings{'SMAC'} = '';
$outfwsettings{'DIP'} = '';
$outfwsettings{'DPORT'} = '';
$outfwsettings{'PROT'} = '';
$outfwsettings{'STATE'} = '';
$outfwsettings{'DISPLAY_DIP'} = '';
$outfwsettings{'DISPLAY_DPORT'} = '';
$outfwsettings{'DISPLAY_SMAC'} = '';
$outfwsettings{'DISPLAY_SIP'} = '';
$outfwsettings{'POLICY'} = 'MODE0';
my $SOURCE = "";
my $DESTINATION = "";
my $PROTO = "";
my $DPORT = "";
my $DEV = "";
my $MAC = "";
my $POLICY = "";
my $DO = "";
# read files
&General::readhash("${General::swroot}/outgoing/settings", \%outfwsettings);
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
open( FILE, "< $configfile" ) or die "Unable to read $configfile";
@configs = ;
close FILE;
if ( $outfwsettings{'POLICY'} eq 'MODE1' ) {
$outfwsettings{'STATE'} = "ALLOW";
$POLICY = "DROP";
$DO = "ACCEPT";
} elsif ( $outfwsettings{'POLICY'} eq 'MODE2' ) {
$outfwsettings{'STATE'} = "DENY";
$POLICY = "ACCEPT";
$DO = "DROP";
}
### Initialize IPTables
system("/sbin/iptables --flush OUTGOINGFW >/dev/null 2>&1");
system("/sbin/iptables --delete-chain OUTGOINGFW >/dev/null 2>&1");
system("/sbin/iptables -N OUTGOINGFW >/dev/null 2>&1");
if ( $outfwsettings{'POLICY'} eq 'MODE0' ) {
exit 0
}
if ( $outfwsettings{'POLICY'} eq 'MODE1' ) {
$CMD = "/sbin/iptables -A OUTGOINGFW -m state --state ESTABLISHED,RELATED -j ACCEPT";
if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
$CMD = "/sbin/iptables -A OUTGOINGFW -p icmp -j ACCEPT";
if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
}
foreach $configentry (sort @configs)
{
$SOURCE = "";
$DESTINATION = "";
$PROTO = "";
$DPORT = "";
$DEV = "";
$MAC = "";
@configline = split( /\;/, $configentry );
if ($outfwsettings{'STATE'} eq $configline[0]) {
if ($configline[2] eq 'green') {
$SOURCE = "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}";
$DEV = $netsettings{'GREEN_DEV'};
} elsif ($configline[2] eq 'blue') {
$SOURCE = "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}";
$DEV = $netsettings{'BLUE_DEV'};
} elsif ($configline[2] eq 'orange') {
$SOURCE = "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}";
$DEV = $netsettings{'ORANGE_DEV'};
} elsif ($configline[2] eq 'ip') {
$SOURCE = "$configline[5]";
$DEV = "";
} else {
$SOURCE = "0/0";
$DEV = "";
}
if ($configline[7]) { $DESTINATION = "$configline[7]"; } else { $DESTINATION = "0/0"; }
if ($configline[3] eq 'tcp') {
@proto = ("tcp");
} elsif ($configline[3] eq 'udp') {
@proto = ("udp");
} else {
@proto = ("tcp", "udp");
}
foreach $PROTO (@proto) {
$CMD = "/sbin/iptables -A OUTGOINGFW -s $SOURCE -d $DESTINATION -p $PROTO";
if ($configline[8]) {
$DPORT = "$configline[8]";
$CMD = "$CMD --dport $DPORT";
}
if ($DEV) {
$CMD = "$CMD -i $DEV";
}
if ($configline[6]) {
$MAC = "$configline[6]";
$CMD = "$CMD -m mac --mac-source $MAC";
}
$CMD = "$CMD -o $netsettings{'RED_DEV'}";
if ($configline[9] eq "aktiv") {
if ($DEBUG) {
print "$CMD -m state --state NEW -m limit --limit 10/minute -j LOG --log-prefix 'OUTGOINGFW '\n";
} else {
system("$CMD -m state --state NEW -m limit --limit 10/minute -j LOG --log-prefix 'OUTGOINGFW '");
}
}
if ($DEBUG) {
print "$CMD -j $DO\n";
} else {
system("$CMD -j $DO");
}
}
}
}
### Do the P2P-Stuff here
open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
@p2ps = ;
close FILE;
$CMD = "/sbin/iptables -A OUTGOINGFW -m ipp2p";
foreach $p2pentry (sort @p2ps)
{
@p2pline = split( /\;/, $p2pentry );
if ( $outfwsettings{'POLICY'} eq 'MODE2' ) {
$DO = "DROP";
if ("$p2pline[2]" eq "off") {
$P2PSTRING = "$P2PSTRING --$p2pline[1]";
}
} else {
$DO = "ACCEPT";
if ("$p2pline[2]" eq "on") {
$P2PSTRING = "$P2PSTRING --$p2pline[1]";
}
}
}
if ($P2PSTRING) {
if ($DEBUG) {
print "$CMD $P2PSTRING -j $DO\n";
} else {
system("$CMD $P2PSTRING -j $DO");
}
}
if ( $outfwsettings{'POLICY'} eq 'MODE1' ) {
$CMD = "/sbin/iptables -A OUTGOINGFW -o $netsettings{'RED_DEV'} -j DROP";
if ($DEBUG) {
print "$CMD\n";
} else {
system("$CMD");
}
}