#!/usr/bin/perl
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2007-2011 IPFire Team #
# #
# 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';
require "${General::swroot}/lang.pl";
my %outfwsettings = ();
my %checked = ();
my %selected= () ;
my %netsettings = ();
my $errormessage = "";
my $configentry = "";
my @configs = ();
my @configline = ();
my $p2pentry = "";
my @p2ps = ();
my @p2pline = ();
my $CMD = "";
my $P2PSTRING = "";
my $DEBUG = 0;
my $configfile = "/var/ipfire/outgoing/rules";
my $p2pfile = "/var/ipfire/outgoing/p2protocols";
### 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 $SOURCE = "";
my $DESTINATION = "";
my @PROTO = "";
my $PROTO = "";
my $DPORT = "";
my $DEV = "";
my $MAC = "";
my $POLICY = "";
my $DO = "";
my $DAY = "";
# read files
&General::readhash("${General::swroot}/outgoing/settings", \%outfwsettings);
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
$netsettings{'RED_DEV'}=`cat /var/ipfire/red/iface`;
$netsettings{'RED_IP'}=`cat /var/ipfire/red/local-ipaddress`;
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 -m comment --comment 'DROP_OUTGOINGFW '";
}
### 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");
system("/sbin/iptables --flush OUTGOINGFWMAC >/dev/null 2>&1");
system("/sbin/iptables --delete-chain OUTGOINGFWMAC >/dev/null 2>&1");
system("/sbin/iptables -N OUTGOINGFWMAC >/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"); }
$CMD = "/sbin/iptables -A OUTGOINGFWMAC -m state --state ESTABLISHED,RELATED -j ACCEPT";
if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
$CMD = "/sbin/iptables -A OUTGOINGFW -p icmp -j ACCEPT";
if ($DEBUG) { print "$CMD\n"; } else { system("$CMD"); }
$CMD = "/sbin/iptables -A OUTGOINGFWMAC -p icmp -j ACCEPT";
if ($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 'red') {
@SOURCE = ("$netsettings{'RED_IP'}");
$DEV = "";
} elsif ($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 'ipsec') {
@SOURCE = "";
$DEV = "ipsec+";
} elsif ($configline[2] eq 'ovpn') {
@SOURCE = "";
$DEV = "tun+";
} elsif ($configline[2] eq 'ip') {
@SOURCE = ("$configline[5]");
$DEV = "";
} elsif ($configline[2] eq 'mac') {
@SOURCE = ("$configline[6]");
$DEV = "";
} elsif ($configline[2] eq 'all') {
@SOURCE = ("0/0");
$DEV = "";
} else {
if ( -e "/var/ipfire/outgoing/groups/ipgroups/$configline[2]" ) {
@SOURCE = `cat /var/ipfire/outgoing/groups/ipgroups/$configline[2]`;
} elsif ( -e "/var/ipfire/outgoing/groups/macgroups/$configline[2]" ) {
@SOURCE = `cat /var/ipfire/outgoing/groups/macgroups/$configline[2]`;
$configline[2] = "mac";
}
$DEV = "";
}
if ($configline[7]) { $DESTINATION = "$configline[7]"; } else { $DESTINATION = "0/0"; }
if ($configline[3] eq 'tcp') {
@PROTO = ("tcp");
} elsif ($configline[3] eq 'udp') {
@PROTO = ("udp");
} elsif ($configline[3] eq 'esp') {
@PROTO = ("esp");
} elsif ($configline[3] eq 'gre') {
@PROTO = ("gre");
} else {
@PROTO = ("tcp","udp");
}
foreach $PROTO (@PROTO){
foreach $SOURCE (@SOURCE) {
$SOURCE =~ s/\s//gi;
if ( $SOURCE eq "" || $configline[1] eq "" ){next;}
if ( ( $configline[6] ne "" || $configline[2] eq 'mac' ) && $configline[2] ne 'all'){
$SOURCE =~ s/[^a-zA-Z0-9]/:/gi;
$CMD = "/sbin/iptables -A OUTGOINGFWMAC -m mac --mac-source $SOURCE -d $DESTINATION -p $PROTO";
} else {
$CMD = "/sbin/iptables -A OUTGOINGFW -s $SOURCE -d $DESTINATION -p $PROTO";
}
if ($configline[8] && ( $configline[3] ne 'esp' || $configline[3] ne 'gre') ) {
$DPORT = "$configline[8]";
$CMD = "$CMD -m multiport --destination-port $DPORT";
}
if ($DEV) {
$CMD = "$CMD -i $DEV";
}
if ($configline[17] && $configline[18]) {
if ($configline[10]){$DAY = "Mon,"}
if ($configline[11]){$DAY .= "Tue,"}
if ($configline[12]){$DAY .= "Wed,"}
if ($configline[13]){$DAY .= "Thu,"}
if ($configline[14]){$DAY .= "Fri,"}
if ($configline[15]){$DAY .= "Sat,"}
if ($configline[16]){$DAY .= "Sun"}
$CMD = "$CMD -m time --timestart $configline[17] --timestop $configline[18] --weekdays $DAY";
}
$CMD = "$CMD -o $netsettings{'RED_DEV'}";
if ( $configline[9] eq $Lang::tr{'aktiv'} && $outfwsettings{'POLICY'} eq 'MODE1' ) {
if ($DEBUG) {
print "$CMD -m limit --limit 10/minute -j LOG --log-prefix 'LOG_OUTGOINGFW '\n";
} else {
system("$CMD -m limit --limit 10/minute -j LOG --log-prefix 'LOG_OUTGOINGFW '");
}
} elsif ( $configline[9] eq $Lang::tr{'aktiv'} && $outfwsettings{'POLICY'} eq 'MODE2' ) {
if ($DEBUG) {
print "$CMD -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '\n";
} else {
system("$CMD -m limit --limit 10/minute -j LOG --log-prefix 'DROP_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' ) {
if ( $outfwsettings{'MODE1LOG'} eq 'on' ) {
$CMD = "/sbin/iptables -A OUTGOINGFW -o $netsettings{'RED_DEV'} -m limit --limit 10/minute -j LOG --log-prefix 'DROP_OUTGOINGFW '";
if ($DEBUG) {
print "$CMD\n";
} else {
system("$CMD");
}
}
$CMD = "/sbin/iptables -A OUTGOINGFW -o $netsettings{'RED_DEV'} -j DROP -m comment --comment 'DROP_OUTGOINGFW '";
if ($DEBUG) {
print "$CMD\n";
} else {
system("$CMD");
}
}