[people/teissler/ipfire-2.x.git] / config / forwardfw / rules.pl

#!/usr/bin/perl
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2012														  #
#                                                                             #
# 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 <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################
#																			  #
# Hi folks! I hope this code is useful for all. I needed something to handle  #
# my VPN Connections in a comfortable way. 				      				  #
# This script builds firewallrules from the webinterface                      #
###############################################################################

use strict;
use Time::Local;
no warnings 'uninitialized';

# enable only the following on debugging purpose
#use warnings;
#use CGI::Carp 'fatalsToBrowser';

my %fwdfwsettings=();
my %defaultNetworks=();
my %configfwdfw=();
my %color=();
my %icmptypes=();
my %ovpnSettings=();
my %customgrp=();
our %sourcehash=();
our %targethash=();
my @timeframe=();
my %configinputfw=();
my %configoutgoingfw=();
my %configdmzfw=();
my %confignatfw=();
my %aliases=();
my @DPROT=();
my @p2ps=();
require '/var/ipfire/general-functions.pl';
require "${General::swroot}/lang.pl";
require "${General::swroot}/forward/bin/firewall-lib.pl";

my $configdmz		= "${General::swroot}/forward/dmz";
my $configfwdfw		= "${General::swroot}/forward/config";
my $configinput	    = "${General::swroot}/forward/input";
my $configoutgoing  = "${General::swroot}/forward/outgoing";
my $confignat		= "${General::swroot}/forward/nat";
my $p2pfile			= "${General::swroot}/forward/p2protocols";
my $configgrp		= "${General::swroot}/fwhosts/customgroups";
my $netsettings		= "${General::swroot}/ethernet/settings";
my $errormessage='';
my $orange;
my $green;
my $blue;
my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
my $CHAIN="FORWARDFW";
my $conexists='off';
my $command = 'iptables -A';
my $dnat='';
my $snat='';
&General::readhash("${General::swroot}/forward/settings", \%fwdfwsettings);
&General::readhash("$netsettings", \%defaultNetworks);
&General::readhasharray($configdmz, \%configdmzfw);
&General::readhasharray($configfwdfw, \%configfwdfw);
&General::readhasharray($configinput, \%configinputfw);
&General::readhasharray($configoutgoing, \%configoutgoingfw);
&General::readhasharray($confignat, \%confignatfw);
&General::readhasharray($configgrp, \%customgrp);
&General::get_aliases(\%aliases);

#check if we have an internetconnection
open (CONN,"/var/ipfire/red/iface");
my $con = <CONN>;
close(CONN);
if (-f "/var/ipfire/red/active"){
	$conexists='on';
}
open (CONN1,"/var/ipfire/red/local-ipaddress");
my $redip = <CONN1>;
close(CONN1);
################################
#    DEBUG/TEST                #
################################
my $MODE=1;     # 0 - normal operation
				# 1 - print configline and rules to console	
				# 
################################		
my $param=shift;

if($param eq 'flush'){
	if ($MODE eq '1'){
		print " Flushing chains...\n";
	}
	&flush;
}else{
	if ($MODE eq '1'){
		print " Flushing chains...\n";
	}
	&flush;
	if ($MODE eq '1'){
		print " Preparing rules...\n";
	}
	&preparerules;
	if($MODE eq '0'){
		if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
			&p2pblock;
			system ("/usr/sbin/firewall-policy"); 
		}elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
			$defaultNetworks{'GREEN_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'GREEN_NETMASK'});
			$green="$defaultNetworks{'GREEN_ADDRESS'}/$defaultNetworks{'GREEN_NETMASK'}";
			if ($defaultNetworks{'BLUE_DEV'}){
				$defaultNetworks{'BLUE_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'BLUE_NETMASK'});
				$blue="$defaultNetworks{'BLUE_ADDRESS'}/$defaultNetworks{'BLUE_NETMASK'}";
				#set default rules for BLUE
				system ("iptables -A $CHAIN -s $blue -d $green -j RETURN");
			}
			if ($defaultNetworks{'ORANGE_DEV'}){
				$defaultNetworks{'ORANGE_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'ORANGE_NETMASK'});
				$orange="$defaultNetworks{'ORANGE_ADDRESS'}/$defaultNetworks{'ORANGE_NETMASK'}";
				#set default rules for DMZ
				system ("iptables -A $CHAIN -s $orange -d $green -j RETURN");
				if ($defaultNetworks{'BLUE_DEV'}){
					system ("iptables -A $CHAIN -s $orange -d $blue -j RETURN");
				}
			}
			&p2pblock;
			system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT");
			system ("/usr/sbin/firewall-policy");
		}
	}
}
sub flush
{
	system ("iptables -F FORWARDFW");
	system ("iptables -F INPUTFW");
	system ("iptables -F OUTGOINGFW");
	system ("iptables -F PORTFWACCESS");
	system ("iptables -t nat -F NAT_DESTINATION");
	system ("iptables -t nat -F NAT_SOURCE");
}			
sub preparerules
{
	if (! -z  "${General::swroot}/forward/dmz"){
		&buildrules(\%configdmzfw);
	}
	if (! -z  "${General::swroot}/forward/config"){
		&buildrules(\%configfwdfw);
	}
	if (! -z  "${General::swroot}/forward/input"){
		&buildrules(\%configinputfw);
	}
	if (! -z  "${General::swroot}/forward/outgoing"){
		&buildrules(\%configoutgoingfw);
	}
	if (! -z  "${General::swroot}/forward/nat"){
		&buildrules(\%confignatfw);
	}
}
sub buildrules
{
	my $hash=shift;
	my $STAG;
	my $natip;
	my $snatport;
	my $fireport;
	my $nat;
	my $fwaccessdport;
	foreach my $key (sort {$a <=> $b} keys %$hash){
		next if ($$hash{$key}[6] eq 'RED' && $conexists eq 'off' );
		if ($$hash{$key}[28] eq 'ON'){
			$command='iptables -t nat -A';
			$natip=&get_nat_ip($$hash{$key}[29]);
			if($$hash{$key}[31] eq 'dnat'){
				$nat='DNAT';
				if ($$hash{$key}[30] =~ /\|/){
					$$hash{$key}[30]=~ tr/|/,/;
					$fireport='-m multiport --dport '.$$hash{$key}[30];
				}else{
					$fireport='--dport '.$$hash{$key}[30] if ($$hash{$key}[30]>0);
				}
			}else{
				$nat='SNAT';
			}
		}
		$STAG='';
		if($$hash{$key}[2] eq 'ON'){
			#get source ip's
			if ($$hash{$key}[3] eq 'cust_grp_src'){
				foreach my $grp (sort {$a <=> $b} keys %customgrp){
						if($customgrp{$grp}[0] eq $$hash{$key}[4]){
						&get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
					}
				}
			}else{
				&get_address($$hash{$key}[3],$$hash{$key}[4],"src");
			}
			#get target ip's
			if ($$hash{$key}[5] eq 'cust_grp_tgt'){
				foreach my $grp (sort {$a <=> $b} keys %customgrp){
					if($customgrp{$grp}[0] eq $$hash{$key}[6]){
						&get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
					}
				}
			}elsif($$hash{$key}[5] eq 'ipfire'){
				if($$hash{$key}[6] eq 'Default IP'){
					open(FILE, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.';
					$targethash{$key}[0]= <FILE>;
					close(FILE);
				}else{
					foreach my $alias (sort keys %aliases){
						if ($$hash{$key}[6] eq $alias){
							$targethash{$key}[0]=$aliases{$alias}{'IPT'};
						}
					}
				}
			}else{
				&get_address($$hash{$key}[5],$$hash{$key}[6],"tgt");
			}
			##get source prot and port
			$SRC_TGT='SRC';
			$SPROT = &get_prot($hash,$key);
			$SPORT = &get_port($hash,$key);
			$SRC_TGT='';

			##get target prot and port
			$DPROT=&get_prot($hash,$key);

			if ($DPROT eq ''){$DPROT=' ';}				
			@DPROT=split(",",$DPROT);

			#get time if defined
			if($$hash{$key}[18] eq 'ON'){
				my ($time1,$time2,$daylight);
				my $daylight=$$hash{$key}[28];
				$time1=&get_time($$hash{$key}[26],$daylight);
				$time2=&get_time($$hash{$key}[27],$daylight);
				if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
				if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
				if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
				if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
				if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
				if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
				if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
				$TIME=join(",",@timeframe);
				
				$TIMEFROM="--timestart $time1 ";
				$TIMETILL="--timestop $time2 ";
				$TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
			}
			if ($MODE eq '1'){	
				print "NR:$key ";
				foreach my $i (0 .. $#{$$hash{$key}}){
					print "$i: $$hash{$key}[$i]  ";
				}
				print "\n";
				print"##################################\n";
				#print rules to console
				foreach my $DPROT (@DPROT){
					$DPORT = &get_port($hash,$key,$DPROT);
					if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
					$PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
					foreach my $a (sort keys %sourcehash){
						foreach my $b (sort keys %targethash){
							if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
								if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
									if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
									if(substr($DPORT, 2, 4) eq 'icmp'){
										my @icmprule= split(",",substr($DPORT, 12,));
										foreach (@icmprule){
											if ($$hash{$key}[17] eq 'ON'){
												print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j LOG\n";
											}
											print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]\n";
										}
									}elsif($$hash{$key}[28] ne 'ON'){
										if ($$hash{$key}[17] eq 'ON'){
											print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
										}
										print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
									}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
										if ($$hash{$key}[17] eq 'ON'){
											print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
										}
										my ($ip,$sub) =split("/",$targethash{$b}[0]);
										print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip$DPORT\n";
										$DPORT =~ s/\-/:/g;
										if ($DPORT){
											$fwaccessdport="--dport ".substr($DPORT,1,);
										}elsif(! $DPORT && $$hash{$key}[30] ne ''){
											if ($$hash{$key}[30]=~m/|/i){
												$$hash{$key}[30] =~ s/\|/,/g;
												$fwaccessdport="-m multiport --dport $$hash{$key}[30]";
											}else{
												$fwaccessdport="--dport $$hash{$key}[30]";
											}
										}
										print "iptables -A PORTFWACCESS $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
									}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[32] eq 'snat'){
										print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip$fireport\n";
									}
								}				
							}
						}
					}
					print"\n";
				}
			}elsif($MODE eq '0'){
				foreach my $DPROT (@DPROT){
					$DPORT = &get_port($hash,$key,$DPROT);
					if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
					$PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
					foreach my $a (sort keys %sourcehash){
						foreach my $b (sort keys %targethash){
							if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
								if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
									if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
									if(substr($DPORT, 2, 4) eq 'icmp'){
										my @icmprule= split(",",substr($DPORT, 12,));
										foreach (@icmprule){
											if ($$hash{$key}[17] eq 'ON'){
												system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] -- icmp-type $_ $TIME -j LOG");
											}
											system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]");
										}
									}elsif($$hash{$key}[28] ne 'ON'){
										if ($$hash{$key}[17] eq 'ON'){
											system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
										}
										system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
									}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
										if ($$hash{$key}[17] eq 'ON'){
											system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
										}
										my ($ip,$sub) =split("/",$targethash{$b}[0]);
										system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip$DPORT\n";
										$DPORT =~ s/\-/:/g;
										if ($DPORT){
											$fwaccessdport="--dport ".substr($DPORT,1,);
										}elsif(! $DPORT && $$hash{$key}[30] ne ''){
											if ($$hash{$key}[30]=~m/|/i){
												$$hash{$key}[30] =~ s/\|/,/g;
												$fwaccessdport="-m multiport --dport $$hash{$key}[30]";
											}else{
												$fwaccessdport="--dport $$hash{$key}[30]";
											}
										}
										system "iptables -A PORTFWACCESS $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
									}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
										if ($$hash{$key}[17] eq 'ON'){
											system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT '\n";
										}
										system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat  --to $natip$fireport\n";
									}
								}				
							}
						}
					}
				}
			}
		}
		%sourcehash=();
		%targethash=();
		undef $TIME;
		undef $TIMEFROM;
		undef $TIMETILL;
		undef $fireport;
	}
}
sub get_nat_ip
{
	my $val=shift;
	my $result;
	if($val eq 'RED' || $val eq 'GREEN' || $val eq 'ORANGE' || $val eq 'BLUE'){
		$result=$defaultNetworks{$val.'_ADDRESS'};
	}elsif($val eq 'ALL'){
		$result='-i '.$con;
	}elsif($val eq 'Default IP'){
		$result='-d '.$redip;
	}else{
		foreach my $al (sort keys %aliases){
			if($val eq $al){
				$result='-d '.$aliases{$al}{'IPT'};
			}
		}
	}
	return $result;
}
sub get_time
{
	my $val=shift;
	my $val1=shift;
	my $time;
	my $minutes;
	my $ruletime;
	$minutes = &utcmin($val);
	$ruletime = $minutes + &time_get_utc($val);
	if ($ruletime < 0){$ruletime +=1440;}
	if ($ruletime > 1440){$ruletime -=1440;}
	$time=sprintf "%02d:%02d", $ruletime / 60, $ruletime % 60;
	return $time;
}
sub time_get_utc
{
	# Calculates the UTCtime from a given time
	my $val=shift;
	my @localtime=localtime(time);
	my @gmtime=gmtime(time);
	my $diff = ($gmtime[2]*60+$gmtime[1]%60)-($localtime[2]*60+$localtime[1]%60);
	return $diff;
}
sub utcmin
{
	my $ruletime=shift;
	my ($hrs,$min) = split(":",$ruletime);
	my $newtime = $hrs*60+$min;
	return $newtime;
}
sub p2pblock
{
	my $P2PSTRING;
	my $DO;
	open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
	@p2ps = <FILE>;
	close FILE;
	my $CMD = "-m ipp2p";
	foreach my $p2pentry (sort @p2ps) {
		my @p2pline = split( /\;/, $p2pentry );
		if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
			$DO = "ACCEPT";
			if ("$p2pline[2]" eq "on") {
				$P2PSTRING = "$P2PSTRING --$p2pline[1]";
			}
		}else {
			$DO = "RETURN";
			if ("$p2pline[2]" eq "off") {
				$P2PSTRING = "$P2PSTRING --$p2pline[1]";
			}
		}
	}
	if ($MODE eq 1){
		if($P2PSTRING){
			print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
		}
	}else{
		if($P2PSTRING){
			system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO");
		}
	}
}
sub get_address
{
	my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
	my $base2=shift;
	my $type=shift; #src or tgt
	my $hash;
	if ($type eq 'src'){
		$hash=\%sourcehash;	
	}else{
		$hash=\%targethash;
	}
	my $key = &General::findhasharraykey($hash);
	if($base eq 'src_addr' || $base eq 'tgt_addr' ){
		if (&General::validmac($base2)){
			$$hash{$key}[0] = "-m mac --mac-source $base2";
		}else{
			$$hash{$key}[0] = $base2;
		}
	}elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
		$$hash{$key}[0]=&fwlib::get_std_net_ip($base2,$con);
	}elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
		$$hash{$key}[0]=&fwlib::get_net_ip($base2);
	}elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
		$$hash{$key}[0]=&fwlib::get_host_ip($base2,$type);
	}elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
		$$hash{$key}[0]=&fwlib::get_ovpn_net_ip($base2,1);
	}elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
		$$hash{$key}[0]=&fwlib::get_ovpn_host_ip($base2,33);
	}elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
		$$hash{$key}[0]=&fwlib::get_ovpn_n2n_ip($base2,27);
	}elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
		$$hash{$key}[0]=&fwlib::get_ipsec_net_ip($base2,11);
	}
}
sub get_prot
{
	my $hash=shift;
	my $key=shift;
	if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
		if ($$hash{$key}[10] ne ''){
			return"$$hash{$key}[8]";
		}elsif($$hash{$key}[9] ne ''){
			return"$$hash{$key}[8]";
		}else{
			return "$$hash{$key}[8]";
		}
	}elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
		if ($$hash{$key}[14] eq 'TGT_PORT'){
			if ($$hash{$key}[15] ne ''){
				return "$$hash{$key}[12]";
			}elsif($$hash{$key}[13] ne ''){
				return "$$hash{$key}[12]";
			}else{
				return "$$hash{$key}[12]";
			}
		}elsif($$hash{$key}[14] eq 'cust_srv'){
			return &fwlib::get_srv_prot($$hash{$key}[15]);
			
		}elsif($$hash{$key}[14] eq 'cust_srvgrp'){
			return &fwlib::get_srvgrp_prot($$hash{$key}[15]);
		}
	}
	#DNAT
	if ($SRC_TGT eq '' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[11] eq '' && $$hash{$key}[12] ne ''){
		return "$$hash{$key}[12]";
	}
}
sub get_port
{
	my $hash=shift;
	my $key=shift;
	my $prot=shift;
	if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
		if ($$hash{$key}[10] ne ''){
			$$hash{$key}[10] =~ s/\|/,/g;
			if(index($$hash{$key}[10],",") > 0){
				return "-m multiport --sport $$hash{$key}[10] ";
			}else{
				if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ||($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat')  ){
					return "--sport $$hash{$key}[10] ";
				}else{
					return ":$$hash{$key}[10]";
				}
			}
		}elsif($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
			return "--icmp-type $$hash{$key}[9] ";
		}elsif($$hash{$key}[9] eq 'All ICMP-Types'){
			return;
		}
	}elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
		if($$hash{$key}[14] eq 'TGT_PORT'){
			if ($$hash{$key}[15] ne ''){
				$$hash{$key}[15] =~ s/\|/,/g;
				if(index($$hash{$key}[15],",") > 0){
					return "-m multiport --dport $$hash{$key}[15] ";
				}else{
					if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ){
						return "--dport $$hash{$key}[15] ";
					 }else{
						 $$hash{$key}[15] =~ s/\:/-/g;
						return ":$$hash{$key}[15]";
					 }
				}
			}elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
				return "--icmp-type $$hash{$key}[13] ";
			}elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){
				return;
			}
		}elsif($$hash{$key}[14] eq 'cust_srv'){
			if ($prot ne 'ICMP'){
				if($$hash{$key}[31] eq 'dnat'){
					return ":".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
				}else{
					return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
				}
			}elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){
				return "--icmp-type ".&fwlib::get_srv_port($$hash{$key}[15],3,$prot);
			}elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){
				return;
			}
		}elsif($$hash{$key}[14] eq 'cust_srvgrp'){
			if 	($prot ne 'ICMP'){
				return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
			}
			elsif($prot eq 'ICMP'){
				return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
			}
		}
	}
}
Commit	Line	Data
	1	#!/usr/bin/perl
	2	###############################################################################
	3	# #
	4	# IPFire.org - A linux based firewall #
	5	# Copyright (C) 2012 #
	6	# #
	7	# This program is free software: you can redistribute it and/or modify #
	8	# it under the terms of the GNU General Public License as published by #
	9	# the Free Software Foundation, either version 3 of the License, or #
	10	# (at your option) any later version. #
	11	# #
	12	# This program is distributed in the hope that it will be useful, #
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of #
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
	15	# GNU General Public License for more details. #
	16	# #
	17	# You should have received a copy of the GNU General Public License #
	18	# along with this program. If not, see <http://www.gnu.org/licenses/>. #
	19	# #
	20	###############################################################################
	21	# #
	22	# Hi folks! I hope this code is useful for all. I needed something to handle #
	23	# my VPN Connections in a comfortable way. #
	24	# This script builds firewallrules from the webinterface #
	25	###############################################################################
	26
	27	use strict;
	28	use Time::Local;
	29	no warnings 'uninitialized';
	30
	31	# enable only the following on debugging purpose
	32	#use warnings;
	33	#use CGI::Carp 'fatalsToBrowser';
	34
	35	my %fwdfwsettings=();
	36	my %defaultNetworks=();
	37	my %configfwdfw=();
	38	my %color=();
	39	my %icmptypes=();
	40	my %ovpnSettings=();
	41	my %customgrp=();
	42	our %sourcehash=();
	43	our %targethash=();
	44	my @timeframe=();
	45	my %configinputfw=();
	46	my %configoutgoingfw=();
	47	my %configdmzfw=();
	48	my %confignatfw=();
	49	my %aliases=();
	50	my @DPROT=();
	51	my @p2ps=();
	52	require '/var/ipfire/general-functions.pl';
	53	require "${General::swroot}/lang.pl";
	54	require "${General::swroot}/forward/bin/firewall-lib.pl";
	55
	56	my $configdmz = "${General::swroot}/forward/dmz";
	57	my $configfwdfw = "${General::swroot}/forward/config";
	58	my $configinput = "${General::swroot}/forward/input";
	59	my $configoutgoing = "${General::swroot}/forward/outgoing";
	60	my $confignat = "${General::swroot}/forward/nat";
	61	my $p2pfile = "${General::swroot}/forward/p2protocols";
	62	my $configgrp = "${General::swroot}/fwhosts/customgroups";
	63	my $netsettings = "${General::swroot}/ethernet/settings";
	64	my $errormessage='';
	65	my $orange;
	66	my $green;
	67	my $blue;
	68	my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
	69	my $CHAIN="FORWARDFW";
	70	my $conexists='off';
	71	my $command = 'iptables -A';
	72	my $dnat='';
	73	my $snat='';
	74	&General::readhash("${General::swroot}/forward/settings", \%fwdfwsettings);
	75	&General::readhash("$netsettings", \%defaultNetworks);
	76	&General::readhasharray($configdmz, \%configdmzfw);
	77	&General::readhasharray($configfwdfw, \%configfwdfw);
	78	&General::readhasharray($configinput, \%configinputfw);
	79	&General::readhasharray($configoutgoing, \%configoutgoingfw);
	80	&General::readhasharray($confignat, \%confignatfw);
	81	&General::readhasharray($configgrp, \%customgrp);
	82	&General::get_aliases(\%aliases);
	83
	84	#check if we have an internetconnection
	85	open (CONN,"/var/ipfire/red/iface");
	86	my $con = <CONN>;
	87	close(CONN);
	88	if (-f "/var/ipfire/red/active"){
	89	$conexists='on';
	90	}
	91	open (CONN1,"/var/ipfire/red/local-ipaddress");
	92	my $redip = <CONN1>;
	93	close(CONN1);
	94	################################
	95	# DEBUG/TEST #
	96	################################
	97	my $MODE=1; # 0 - normal operation
	98	# 1 - print configline and rules to console
	99	#
	100	################################
	101	my $param=shift;
	102
	103	if($param eq 'flush'){
	104	if ($MODE eq '1'){
	105	print " Flushing chains...\n";
	106	}
	107	&flush;
	108	}else{
	109	if ($MODE eq '1'){
	110	print " Flushing chains...\n";
	111	}
	112	&flush;
	113	if ($MODE eq '1'){
	114	print " Preparing rules...\n";
	115	}
	116	&preparerules;
	117	if($MODE eq '0'){
	118	if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
	119	&p2pblock;
	120	system ("/usr/sbin/firewall-policy");
	121	}elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
	122	$defaultNetworks{'GREEN_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'GREEN_NETMASK'});
	123	$green="$defaultNetworks{'GREEN_ADDRESS'}/$defaultNetworks{'GREEN_NETMASK'}";
	124	if ($defaultNetworks{'BLUE_DEV'}){
	125	$defaultNetworks{'BLUE_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'BLUE_NETMASK'});
	126	$blue="$defaultNetworks{'BLUE_ADDRESS'}/$defaultNetworks{'BLUE_NETMASK'}";
	127	#set default rules for BLUE
	128	system ("iptables -A $CHAIN -s $blue -d $green -j RETURN");
	129	}
	130	if ($defaultNetworks{'ORANGE_DEV'}){
	131	$defaultNetworks{'ORANGE_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'ORANGE_NETMASK'});
	132	$orange="$defaultNetworks{'ORANGE_ADDRESS'}/$defaultNetworks{'ORANGE_NETMASK'}";
	133	#set default rules for DMZ
	134	system ("iptables -A $CHAIN -s $orange -d $green -j RETURN");
	135	if ($defaultNetworks{'BLUE_DEV'}){
	136	system ("iptables -A $CHAIN -s $orange -d $blue -j RETURN");
	137	}
	138	}
	139	&p2pblock;
	140	system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT");
	141	system ("/usr/sbin/firewall-policy");
	142	}
	143	}
	144	}
	145	sub flush
	146	{
	147	system ("iptables -F FORWARDFW");
	148	system ("iptables -F INPUTFW");
	149	system ("iptables -F OUTGOINGFW");
	150	system ("iptables -F PORTFWACCESS");
	151	system ("iptables -t nat -F NAT_DESTINATION");
	152	system ("iptables -t nat -F NAT_SOURCE");
	153	}
	154	sub preparerules
	155	{
	156	if (! -z "${General::swroot}/forward/dmz"){
	157	&buildrules(\%configdmzfw);
	158	}
	159	if (! -z "${General::swroot}/forward/config"){
	160	&buildrules(\%configfwdfw);
	161	}
	162	if (! -z "${General::swroot}/forward/input"){
	163	&buildrules(\%configinputfw);
	164	}
	165	if (! -z "${General::swroot}/forward/outgoing"){
	166	&buildrules(\%configoutgoingfw);
	167	}
	168	if (! -z "${General::swroot}/forward/nat"){
	169	&buildrules(\%confignatfw);
	170	}
	171	}
	172	sub buildrules
	173	{
	174	my $hash=shift;
	175	my $STAG;
	176	my $natip;
	177	my $snatport;
	178	my $fireport;
	179	my $nat;
	180	my $fwaccessdport;
	181	foreach my $key (sort {$a <=> $b} keys %$hash){
	182	next if ($$hash{$key}[6] eq 'RED' && $conexists eq 'off' );
	183	if ($$hash{$key}[28] eq 'ON'){
	184	$command='iptables -t nat -A';
	185	$natip=&get_nat_ip($$hash{$key}[29]);
	186	if($$hash{$key}[31] eq 'dnat'){
	187	$nat='DNAT';
	188	if ($$hash{$key}[30] =~ /\\|/){
	189	$$hash{$key}[30]=~ tr/\|/,/;
	190	$fireport='-m multiport --dport '.$$hash{$key}[30];
	191	}else{
	192	$fireport='--dport '.$$hash{$key}[30] if ($$hash{$key}[30]>0);
	193	}
	194	}else{
	195	$nat='SNAT';
	196	}
	197	}
	198	$STAG='';
	199	if($$hash{$key}[2] eq 'ON'){
	200	#get source ip's
	201	if ($$hash{$key}[3] eq 'cust_grp_src'){
	202	foreach my $grp (sort {$a <=> $b} keys %customgrp){
	203	if($customgrp{$grp}[0] eq $$hash{$key}[4]){
	204	&get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
	205	}
	206	}
	207	}else{
	208	&get_address($$hash{$key}[3],$$hash{$key}[4],"src");
	209	}
	210	#get target ip's
	211	if ($$hash{$key}[5] eq 'cust_grp_tgt'){
	212	foreach my $grp (sort {$a <=> $b} keys %customgrp){
	213	if($customgrp{$grp}[0] eq $$hash{$key}[6]){
	214	&get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
	215	}
	216	}
	217	}elsif($$hash{$key}[5] eq 'ipfire'){
	218	if($$hash{$key}[6] eq 'Default IP'){
	219	open(FILE, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.';
	220	$targethash{$key}[0]= <FILE>;
	221	close(FILE);
	222	}else{
	223	foreach my $alias (sort keys %aliases){
	224	if ($$hash{$key}[6] eq $alias){
	225	$targethash{$key}[0]=$aliases{$alias}{'IPT'};
	226	}
	227	}
	228	}
	229	}else{
	230	&get_address($$hash{$key}[5],$$hash{$key}[6],"tgt");
	231	}
	232	##get source prot and port
	233	$SRC_TGT='SRC';
	234	$SPROT = &get_prot($hash,$key);
	235	$SPORT = &get_port($hash,$key);
	236	$SRC_TGT='';
	237
	238	##get target prot and port
	239	$DPROT=&get_prot($hash,$key);
	240
	241	if ($DPROT eq ''){$DPROT=' ';}
	242	@DPROT=split(",",$DPROT);
	243
	244	#get time if defined
	245	if($$hash{$key}[18] eq 'ON'){
	246	my ($time1,$time2,$daylight);
	247	my $daylight=$$hash{$key}[28];
	248	$time1=&get_time($$hash{$key}[26],$daylight);
	249	$time2=&get_time($$hash{$key}[27],$daylight);
	250	if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
	251	if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
	252	if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
	253	if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
	254	if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
	255	if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
	256	if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
	257	$TIME=join(",",@timeframe);
	258
	259	$TIMEFROM="--timestart $time1 ";
	260	$TIMETILL="--timestop $time2 ";
	261	$TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
	262	}
	263	if ($MODE eq '1'){
	264	print "NR:$key ";
	265	foreach my $i (0 .. $#{$$hash{$key}}){
	266	print "$i: $$hash{$key}[$i] ";
	267	}
	268	print "\n";
	269	print"##################################\n";
	270	#print rules to console
	271	foreach my $DPROT (@DPROT){
	272	$DPORT = &get_port($hash,$key,$DPROT);
	273	if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
	274	$PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
	275	foreach my $a (sort keys %sourcehash){
	276	foreach my $b (sort keys %targethash){
	277	if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' \|\| $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
	278	if($SPROT eq '' \|\| $SPROT eq $DPROT \|\| $DPROT eq ' '){
	279	if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
	280	if(substr($DPORT, 2, 4) eq 'icmp'){
	281	my @icmprule= split(",",substr($DPORT, 12,));
	282	foreach (@icmprule){
	283	if ($$hash{$key}[17] eq 'ON'){
	284	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j LOG\n";
	285	}
	286	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]\n";
	287	}
	288	}elsif($$hash{$key}[28] ne 'ON'){
	289	if ($$hash{$key}[17] eq 'ON'){
	290	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
	291	}
	292	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
	293	}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
	294	if ($$hash{$key}[17] eq 'ON'){
	295	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
	296	}
	297	my ($ip,$sub) =split("/",$targethash{$b}[0]);
	298	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip$DPORT\n";
	299	$DPORT =~ s/\-/:/g;
	300	if ($DPORT){
	301	$fwaccessdport="--dport ".substr($DPORT,1,);
	302	}elsif(! $DPORT && $$hash{$key}[30] ne ''){
	303	if ($$hash{$key}[30]=~m/\|/i){
	304	$$hash{$key}[30] =~ s/\\|/,/g;
	305	$fwaccessdport="-m multiport --dport $$hash{$key}[30]";
	306	}else{
	307	$fwaccessdport="--dport $$hash{$key}[30]";
	308	}
	309	}
	310	print "iptables -A PORTFWACCESS $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
	311	}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[32] eq 'snat'){
	312	print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip$fireport\n";
	313	}
	314	}
	315	}
	316	}
	317	}
	318	print"\n";
	319	}
	320	}elsif($MODE eq '0'){
	321	foreach my $DPROT (@DPROT){
	322	$DPORT = &get_port($hash,$key,$DPROT);
	323	if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
	324	$PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
	325	foreach my $a (sort keys %sourcehash){
	326	foreach my $b (sort keys %targethash){
	327	if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' \|\| $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
	328	if($SPROT eq '' \|\| $SPROT eq $DPROT \|\| $DPROT eq ' '){
	329	if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
	330	if(substr($DPORT, 2, 4) eq 'icmp'){
	331	my @icmprule= split(",",substr($DPORT, 12,));
	332	foreach (@icmprule){
	333	if ($$hash{$key}[17] eq 'ON'){
	334	system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] -- icmp-type $_ $TIME -j LOG");
	335	}
	336	system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]");
	337	}
	338	}elsif($$hash{$key}[28] ne 'ON'){
	339	if ($$hash{$key}[17] eq 'ON'){
	340	system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
	341	}
	342	system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
	343	}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
	344	if ($$hash{$key}[17] eq 'ON'){
	345	system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
	346	}
	347	my ($ip,$sub) =split("/",$targethash{$b}[0]);
	348	system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to $ip$DPORT\n";
	349	$DPORT =~ s/\-/:/g;
	350	if ($DPORT){
	351	$fwaccessdport="--dport ".substr($DPORT,1,);
	352	}elsif(! $DPORT && $$hash{$key}[30] ne ''){
	353	if ($$hash{$key}[30]=~m/\|/i){
	354	$$hash{$key}[30] =~ s/\\|/,/g;
	355	$fwaccessdport="-m multiport --dport $$hash{$key}[30]";
	356	}else{
	357	$fwaccessdport="--dport $$hash{$key}[30]";
	358	}
	359	}
	360	system "iptables -A PORTFWACCESS $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
	361	}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
	362	if ($$hash{$key}[17] eq 'ON'){
	363	system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT '\n";
	364	}
	365	system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip$fireport\n";
	366	}
	367	}
	368	}
	369	}
	370	}
	371	}
	372	}
	373	}
	374	%sourcehash=();
	375	%targethash=();
	376	undef $TIME;
	377	undef $TIMEFROM;
	378	undef $TIMETILL;
	379	undef $fireport;
	380	}
	381	}
	382	sub get_nat_ip
	383	{
	384	my $val=shift;
	385	my $result;
	386	if($val eq 'RED' \|\| $val eq 'GREEN' \|\| $val eq 'ORANGE' \|\| $val eq 'BLUE'){
	387	$result=$defaultNetworks{$val.'_ADDRESS'};
	388	}elsif($val eq 'ALL'){
	389	$result='-i '.$con;
	390	}elsif($val eq 'Default IP'){
	391	$result='-d '.$redip;
	392	}else{
	393	foreach my $al (sort keys %aliases){
	394	if($val eq $al){
	395	$result='-d '.$aliases{$al}{'IPT'};
	396	}
	397	}
	398	}
	399	return $result;
	400	}
	401	sub get_time
	402	{
	403	my $val=shift;
	404	my $val1=shift;
	405	my $time;
	406	my $minutes;
	407	my $ruletime;
	408	$minutes = &utcmin($val);
	409	$ruletime = $minutes + &time_get_utc($val);
	410	if ($ruletime < 0){$ruletime +=1440;}
	411	if ($ruletime > 1440){$ruletime -=1440;}
	412	$time=sprintf "%02d:%02d", $ruletime / 60, $ruletime % 60;
	413	return $time;
	414	}
	415	sub time_get_utc
	416	{
	417	# Calculates the UTCtime from a given time
	418	my $val=shift;
	419	my @localtime=localtime(time);
	420	my @gmtime=gmtime(time);
	421	my $diff = ($gmtime[2]60+$gmtime[1]%60)-($localtime[2]60+$localtime[1]%60);
	422	return $diff;
	423	}
	424	sub utcmin
	425	{
	426	my $ruletime=shift;
	427	my ($hrs,$min) = split(":",$ruletime);
	428	my $newtime = $hrs*60+$min;
	429	return $newtime;
	430	}
	431	sub p2pblock
	432	{
	433	my $P2PSTRING;
	434	my $DO;
	435	open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
	436	@p2ps = <FILE>;
	437	close FILE;
	438	my $CMD = "-m ipp2p";
	439	foreach my $p2pentry (sort @p2ps) {
	440	my @p2pline = split( /\;/, $p2pentry );
	441	if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
	442	$DO = "ACCEPT";
	443	if ("$p2pline[2]" eq "on") {
	444	$P2PSTRING = "$P2PSTRING --$p2pline[1]";
	445	}
	446	}else {
	447	$DO = "RETURN";
	448	if ("$p2pline[2]" eq "off") {
	449	$P2PSTRING = "$P2PSTRING --$p2pline[1]";
	450	}
	451	}
	452	}
	453	if ($MODE eq 1){
	454	if($P2PSTRING){
	455	print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
	456	}
	457	}else{
	458	if($P2PSTRING){
	459	system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO");
	460	}
	461	}
	462	}
	463	sub get_address
	464	{
	465	my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
	466	my $base2=shift;
	467	my $type=shift; #src or tgt
	468	my $hash;
	469	if ($type eq 'src'){
	470	$hash=\%sourcehash;
	471	}else{
	472	$hash=\%targethash;
	473	}
	474	my $key = &General::findhasharraykey($hash);
	475	if($base eq 'src_addr' \|\| $base eq 'tgt_addr' ){
	476	if (&General::validmac($base2)){
	477	$$hash{$key}[0] = "-m mac --mac-source $base2";
	478	}else{
	479	$$hash{$key}[0] = $base2;
	480	}
	481	}elsif($base eq 'std_net_src' \|\| $base eq 'std_net_tgt' \|\| $base eq 'Standard Network'){
	482	$$hash{$key}[0]=&fwlib::get_std_net_ip($base2,$con);
	483	}elsif($base eq 'cust_net_src' \|\| $base eq 'cust_net_tgt' \|\| $base eq 'Custom Network'){
	484	$$hash{$key}[0]=&fwlib::get_net_ip($base2);
	485	}elsif($base eq 'cust_host_src' \|\| $base eq 'cust_host_tgt' \|\| $base eq 'Custom Host'){
	486	$$hash{$key}[0]=&fwlib::get_host_ip($base2,$type);
	487	}elsif($base eq 'ovpn_net_src' \|\| $base eq 'ovpn_net_tgt' \|\| $base eq 'OpenVPN static network'){
	488	$$hash{$key}[0]=&fwlib::get_ovpn_net_ip($base2,1);
	489	}elsif($base eq 'ovpn_host_src' \|\|$base eq 'ovpn_host_tgt' \|\| $base eq 'OpenVPN static host'){
	490	$$hash{$key}[0]=&fwlib::get_ovpn_host_ip($base2,33);
	491	}elsif($base eq 'ovpn_n2n_src' \|\|$base eq 'ovpn_n2n_tgt' \|\| $base eq 'OpenVPN N-2-N'){
	492	$$hash{$key}[0]=&fwlib::get_ovpn_n2n_ip($base2,27);
	493	}elsif($base eq 'ipsec_net_src' \|\| $base eq 'ipsec_net_tgt' \|\| $base eq 'IpSec Network'){
	494	$$hash{$key}[0]=&fwlib::get_ipsec_net_ip($base2,11);
	495	}
	496	}
	497	sub get_prot
	498	{
	499	my $hash=shift;
	500	my $key=shift;
	501	if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
	502	if ($$hash{$key}[10] ne ''){
	503	return"$$hash{$key}[8]";
	504	}elsif($$hash{$key}[9] ne ''){
	505	return"$$hash{$key}[8]";
	506	}else{
	507	return "$$hash{$key}[8]";
	508	}
	509	}elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
	510	if ($$hash{$key}[14] eq 'TGT_PORT'){
	511	if ($$hash{$key}[15] ne ''){
	512	return "$$hash{$key}[12]";
	513	}elsif($$hash{$key}[13] ne ''){
	514	return "$$hash{$key}[12]";
	515	}else{
	516	return "$$hash{$key}[12]";
	517	}
	518	}elsif($$hash{$key}[14] eq 'cust_srv'){
	519	return &fwlib::get_srv_prot($$hash{$key}[15]);
	520
	521	}elsif($$hash{$key}[14] eq 'cust_srvgrp'){
	522	return &fwlib::get_srvgrp_prot($$hash{$key}[15]);
	523	}
	524	}
	525	#DNAT
	526	if ($SRC_TGT eq '' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[11] eq '' && $$hash{$key}[12] ne ''){
	527	return "$$hash{$key}[12]";
	528	}
	529	}
	530	sub get_port
	531	{
	532	my $hash=shift;
	533	my $key=shift;
	534	my $prot=shift;
	535	if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
	536	if ($$hash{$key}[10] ne ''){
	537	$$hash{$key}[10] =~ s/\\|/,/g;
	538	if(index($$hash{$key}[10],",") > 0){
	539	return "-m multiport --sport $$hash{$key}[10] ";
	540	}else{
	541	if($$hash{$key}[28] ne 'ON' \|\| ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') \|\|($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat') ){
	542	return "--sport $$hash{$key}[10] ";
	543	}else{
	544	return ":$$hash{$key}[10]";
	545	}
	546	}
	547	}elsif($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
	548	return "--icmp-type $$hash{$key}[9] ";
	549	}elsif($$hash{$key}[9] eq 'All ICMP-Types'){
	550	return;
	551	}
	552	}elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
	553	if($$hash{$key}[14] eq 'TGT_PORT'){
	554	if ($$hash{$key}[15] ne ''){
	555	$$hash{$key}[15] =~ s/\\|/,/g;
	556	if(index($$hash{$key}[15],",") > 0){
	557	return "-m multiport --dport $$hash{$key}[15] ";
	558	}else{
	559	if($$hash{$key}[28] ne 'ON' \|\| ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ){
	560	return "--dport $$hash{$key}[15] ";
	561	}else{
	562	$$hash{$key}[15] =~ s/\:/-/g;
	563	return ":$$hash{$key}[15]";
	564	}
	565	}
	566	}elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
	567	return "--icmp-type $$hash{$key}[13] ";
	568	}elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){
	569	return;
	570	}
	571	}elsif($$hash{$key}[14] eq 'cust_srv'){
	572	if ($prot ne 'ICMP'){
	573	if($$hash{$key}[31] eq 'dnat'){
	574	return ":".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
	575	}else{
	576	return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
	577	}
	578	}elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){
	579	return "--icmp-type ".&fwlib::get_srv_port($$hash{$key}[15],3,$prot);
	580	}elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){
	581	return;
	582	}
	583	}elsif($$hash{$key}[14] eq 'cust_srvgrp'){
	584	if ($prot ne 'ICMP'){
	585	return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
	586	}
	587	elsif($prot eq 'ICMP'){
	588	return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
	589	}
	590	}
	591	}
	592	}