[ipfire-2.x.git] / config / firewall / firewall-lib.pl

#!/usr/bin/perl
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2013 Alexander Marx <amarx@ipfire.org>                        #
#                                                                             #
# 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/>.       #
#                                                                             #
###############################################################################

use strict;
no warnings 'uninitialized';

package fwlib;

my %customnetwork=();
my %customhost=();
my %customgrp=();
my %customservice=();
my %customservicegrp=();
my %ccdnet=();
my %ccdhost=();
my %ipsecconf=();
my %ipsecsettings=();
my %netsettings=();
my %ovpnsettings=();
my %aliases=();

require '/var/ipfire/general-functions.pl';

my $confignet		= "${General::swroot}/fwhosts/customnetworks";
my $confighost		= "${General::swroot}/fwhosts/customhosts";
my $configgrp 		= "${General::swroot}/fwhosts/customgroups";
my $configsrv 		= "${General::swroot}/fwhosts/customservices";
my $configsrvgrp	= "${General::swroot}/fwhosts/customservicegrp";
my $configccdnet 	= "${General::swroot}/ovpn/ccd.conf";
my $configccdhost	= "${General::swroot}/ovpn/ovpnconfig";
my $configipsec		= "${General::swroot}/vpn/config";
my $configovpn		= "${General::swroot}/ovpn/settings";
my $val;
my $field;
my $netsettings		= "${General::swroot}/ethernet/settings";

&General::readhash("/var/ipfire/ethernet/settings", \%netsettings);
&General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
&General::readhash("${General::swroot}/vpn/settings", \%ipsecsettings);

&General::readhasharray("$confignet", \%customnetwork);
&General::readhasharray("$confighost", \%customhost);
&General::readhasharray("$configgrp", \%customgrp);
&General::readhasharray("$configccdnet", \%ccdnet);
&General::readhasharray("$configccdhost", \%ccdhost);
&General::readhasharray("$configipsec", \%ipsecconf);
&General::readhasharray("$configsrv", \%customservice);
&General::readhasharray("$configsrvgrp", \%customservicegrp);
&General::get_aliases(\%aliases);

sub get_srv_prot
{
	my $val=shift;
	foreach my $key (sort {$a <=> $b} keys %customservice){
		if($customservice{$key}[0] eq $val){
			if ($customservice{$key}[0] eq $val){
				return $customservice{$key}[2];
			}
		}
	}
}
sub get_srvgrp_prot
{
	my $val=shift;
	my @ips=();
	my $tcp;
	my $udp;
	my $icmp;
	foreach my $key (sort {$a <=> $b} keys %customservicegrp){
		if($customservicegrp{$key}[0] eq $val){
			if (&get_srv_prot($customservicegrp{$key}[2]) eq 'TCP'){ 
				$tcp=1;
			}elsif(&get_srv_prot($customservicegrp{$key}[2]) eq 'UDP'){ 
				$udp=1;
			}elsif(&get_srv_prot($customservicegrp{$key}[2]) eq 'ICMP'){
				$icmp=1;
			}else{
				#Protocols used in servicegroups
				push (@ips,$customservicegrp{$key}[2]);
			}
		}
	}
	if ($tcp eq '1'){push (@ips,'TCP');}
	if ($udp eq '1'){push (@ips,'UDP');}
	if ($icmp eq '1'){push (@ips,'ICMP');}
	my $back=join(",",@ips);
	return $back;
	
}
sub get_srv_port
{
	my $val=shift;
	my $field=shift;
	my $prot=shift;
	foreach my $key (sort {$a <=> $b} keys %customservice){
		if($customservice{$key}[0] eq $val && $customservice{$key}[2] eq $prot){
			return $customservice{$key}[$field];
		}
	}
}
sub get_srvgrp_port
{
	my $val=shift;
	my $prot=shift;
	my $back;
	my $value;
	my @ips=();
	foreach my $key (sort {$a <=> $b} keys %customservicegrp){
		if($customservicegrp{$key}[0] eq $val){
			if ($prot ne 'ICMP'){
				$value=&get_srv_port($customservicegrp{$key}[2],1,$prot);
			}elsif ($prot eq 'ICMP'){
				$value=&get_srv_port($customservicegrp{$key}[2],3,$prot);
			}
			push (@ips,$value) if ($value ne '') ;
		}
	}
	if($prot ne 'ICMP'){
		if ($#ips gt 0){$back="-m multiport --dports ";}else{$back="--dport ";}
	}elsif ($prot eq 'ICMP'){
		$back="--icmp-type ";
	}
	
	$back.=join(",",@ips);
	return $back;
}
sub get_ipsec_net_ip
{
	my $val=shift;
	my $field=shift;
	foreach my $key (sort {$a <=> $b} keys %ipsecconf){
		if($ipsecconf{$key}[1] eq $val){
			return $ipsecconf{$key}[$field];
		}
	}
}
sub get_ipsec_host_ip
{
	my $val=shift;
	my $field=shift;
	foreach my $key (sort {$a <=> $b} keys %ipsecconf){
		if($ipsecconf{$key}[1] eq $val){
			return $ipsecconf{$key}[$field];
		}
	}
}
sub get_ovpn_n2n_ip
{
	my $val=shift;
	my $field=shift;
	foreach my $key (sort {$a <=> $b} keys %ccdhost){
		if($ccdhost{$key}[1] eq $val){
			return $ccdhost{$key}[$field];
		}
	}
}
sub get_ovpn_host_ip
{
	my $val=shift;
	my $field=shift;
	foreach my $key (sort {$a <=> $b} keys %ccdhost){
		if($ccdhost{$key}[1] eq $val){
			return $ccdhost{$key}[$field];
		}
	}
}
sub get_ovpn_net_ip
{
	
	my $val=shift;
	my $field=shift;
	foreach my $key (sort {$a <=> $b} keys %ccdnet){
		if($ccdnet{$key}[0] eq $val){
			return $ccdnet{$key}[$field];
		}
	}
}
sub get_grp_ip
{
	my $val=shift;
	my $src=shift;
	foreach my $key (sort {$a <=> $b} keys %customgrp){
		if ($customgrp{$key}[0] eq $val){
			&get_address($customgrp{$key}[3],$src);
		}
	}		
	
}
sub get_std_net_ip
{
	my $val=shift;
	my $con=shift;
	if ($val eq 'ALL'){
		return "0.0.0.0/0.0.0.0";
	}elsif($val eq 'GREEN'){
		return "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}";
	}elsif($val eq 'ORANGE'){
		return "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}";
	}elsif($val eq 'BLUE'){
		return "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}";
	}elsif($val eq 'RED'){
		return "0.0.0.0/0";
	}elsif($val =~ /OpenVPN/i){
		return "$ovpnsettings{'DOVPN_SUBNET'}";
	}elsif($val =~ /IPsec/i){
		return "$ipsecsettings{'RW_NET'}";
	}elsif($val eq 'IPFire'){
		return ;
	}
}
sub get_interface
{
	my $net=shift;
	if($net eq "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}"){
		return "$netsettings{'GREEN_DEV'}";
	}
	if($net eq "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}"){
		return "$netsettings{'ORANGE_DEV'}";
	}
	if($net eq "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}"){
		return "$netsettings{'BLUE_DEV'}";
	}
	if($net eq "0.0.0.0/0"){
		return "$netsettings{'RED_DEV'}";
	}
	return "";
}
sub get_net_ip
{
	my $val=shift;
	foreach my $key (sort {$a <=> $b} keys %customnetwork){
		if($customnetwork{$key}[0] eq $val){
			return "$customnetwork{$key}[1]/$customnetwork{$key}[2]";
		}  
	}
}
sub get_host_ip
{
	my $val=shift;
	my $src=shift;
	foreach my $key (sort {$a <=> $b} keys %customhost){
		if($customhost{$key}[0] eq $val){
			if ($customhost{$key}[1] eq 'mac' && $src eq 'src'){
			return "-m mac --mac-source $customhost{$key}[2]";
			}elsif($customhost{$key}[1] eq 'ip' && $src eq 'src'){
				return "$customhost{$key}[2]";
			}elsif($customhost{$key}[1] eq 'ip' && $src eq 'tgt'){
				return "$customhost{$key}[2]";
			}elsif($customhost{$key}[1] eq 'mac' && $src eq 'tgt'){
				return "none";
			}
		}  
	}
}
sub get_addresses
{
	my $hash = shift;
	my $key  = shift;
	my $type = shift;

	my @addresses = ();
	my $addr_type;
	my $value;
	my $group_name;

	if ($type eq "src") {
		$addr_type = $$hash{$key}[3];
		$value = $$hash{$key}[4];

	} elsif ($type eq "tgt") {
		$addr_type = $$hash{$key}[5];
		$value = $$hash{$key}[6];
	}

	if ($addr_type ~~ ["cust_grp_src", "cust_grp_tgt"]) {
		foreach my $grp (sort {$a <=> $b} keys %customgrp) {
			if ($customgrp{$grp}[0] eq $value) {
				my @address = &get_address($customgrp{$grp}[3], $customgrp{$grp}[2], $type);

				if (@address) {
					push(@addresses, @address);
				}
			}
		}
	} else {
		my @address = &get_address($addr_type, $value, $type);

		if (@address) {
			push(@addresses, @address);
		}
	}

	return @addresses;
}
sub get_address
{
	my $key   = shift;
	my $value = shift;
	my $type  = shift;

	my @ret = ();

	# If the user manually typed an address, we just check if it is a MAC
	# address. Otherwise, we assume that it is an IP address.
	if ($key ~~ ["src_addr", "tgt_addr"]) {
		if (&General::validmac($value)) {
			push(@ret, ["-m mac --mac-source $value", ""]);
		} else {
			push(@ret, [$value, ""]);
		}

	# If a default network interface (GREEN, BLUE, etc.) is selected, we
	# try to get the corresponding address of the network.
	} elsif ($key ~~ ["std_net_src", "std_net_tgt", "Standard Network"]) {
		my $external_interface = &get_external_interface();

		my $network_address = &get_std_net_ip($value, $external_interface);

		if ($network_address) {
			my $interface = &get_interface($network_address);
			push(@ret, [$network_address, $interface]);
		}

	# Custom networks.
	} elsif ($key ~~ ["cust_net_src", "cust_net_tgt", "Custom Network"]) {
		my $network_address = &get_net_ip($value);
		if ($network_address) {
			push(@ret, [$network_address, ""]);
		}

	# Custom hosts.
	} elsif ($key ~~ ["cust_host_src", "cust_host_tgt", "Custom Host"]) {
		my $host_address = &get_host_ip($value, $type);
		if ($host_address) {
			push(@ret, [$host_address, ""]);
		}

	# OpenVPN networks.
	} elsif ($key ~~ ["ovpn_net_src", "ovpn_net_tgt", "OpenVPN static network"]) {
		my $network_address = &get_ovpn_net_ip($value, 1);
		if ($network_address) {
			push(@ret, [$network_address, ""]);
		}

	# OpenVPN hosts.
	} elsif ($key ~~ ["ovpn_host_src", "ovpn_host_tgt", "OpenVPN static host"]) {
		my $host_address = &get_ovpn_host_ip($value, 33);
		if ($host_address) {
			push(@ret, [$host_address, ""]);
		}

	# OpenVPN N2N.
	} elsif ($key ~~ ["ovpn_n2n_src", "ovpn_n2n_tgt", "OpenVPN N-2-N"]) {
		my $network_address = &get_ovpn_n2n_ip($value, 11);
		if ($network_address) {
			push(@ret, [$network_address, ""]);
		}

	# IPsec networks.
	} elsif ($key ~~ ["ipsec_net_src", "ipsec_net_tgt", "IpSec Network"]) {
		my $network_address = &get_ipsec_net_ip($value, 11);
		if ($network_address) {
			push(@ret, [$network_address, ""]);
		}

	# The firewall's own IP addresses.
	} elsif ($key ~~ ["ipfire", "ipfire_src"]) {
		# ALL
		if ($value eq "ALL") {
			push(@ret, ["0/0", ""]);

		# GREEN
		} elsif ($value eq "GREEN") {
			push(@ret, [$netsettings{"GREEN_ADDRESS"}, ""]);

		# BLUE
		} elsif ($value eq "BLUE") {
			push(@ret, [$netsettings{"BLUE_ADDRESS"}, ""]);

		# ORANGE
		} elsif ($value eq "ORANGE") {
			push(@ret, [$netsettings{"ORANGE_ADDRESS"}, ""]);

		# RED
		} elsif ($value ~~ ["RED", "RED1"]) {
			my $address = &get_external_address();
			if ($address) {
				push(@ret, [$address, ""]);
			}

		# Aliases
		} else {
			my $alias = &get_alias($value);
			if ($alias) {
				push(@ret, [$alias, ""]);
			}
		}

	# If nothing was selected, we assume "any".
	} else {
		push(@ret, ["0/0", ""]);
	}

	return @ret;
}
sub get_external_interface()
{
	open(IFACE, "/var/ipfire/red/iface") or return "";
	my $iface = <IFACE>;
	close(IFACE);

	return $iface;
}
sub get_external_address()
{
	open(ADDR, "/var/ipfire/red/local-ipaddress") or return "";
	my $address = <ADDR>;
	close(ADDR);

	return $address;
}
sub get_alias
{
	my $id = shift;

	foreach my $alias (sort keys %aliases) {
		if ($id eq $alias) {
			return $aliases{$alias}{"IPT"};
		}
	}
}

sub get_nat_address {
	my $zone = shift;
	my $source = shift;

	# Any static address of any zone.
	if ($zone eq "AUTO") {
		if ($source && ($source !~ m/mac/i )) {
			my $firewall_ip = &get_internal_firewall_ip_address($source, 1);
			if ($firewall_ip) {
				return $firewall_ip;
			}

			$firewall_ip = &get_matching_firewall_address($source, 1);
			if ($firewall_ip) {
				return $firewall_ip;
			}
		}

		return &get_external_address();

	} elsif ($zone eq "RED" || $zone eq "GREEN" || $zone eq "ORANGE" || $zone eq "BLUE") {
		return $netsettings{$zone . "_ADDRESS"};

	} elsif ($zone ~~ ["Default IP", "ALL"]) {
		return &get_external_address();

	} else {
		my $alias = &get_alias($zone);
		unless ($alias) {
			$alias = &get_external_address();
		}
		return $alias;
	}

	print_error("Could not find NAT address");
}

sub get_internal_firewall_ip_addresses
{
	my $use_orange = shift;

	my @zones = ("GREEN", "BLUE");
	if ($use_orange) {
		push(@zones, "ORANGE");
	}

	my @addresses = ();
	for my $zone (@zones) {
		next unless (exists $netsettings{$zone . "_ADDRESS"});

		my $zone_address = $netsettings{$zone . "_ADDRESS"};
		push(@addresses, $zone_address);
	}

	return @addresses;
}
sub get_matching_firewall_address
{
	my $addr = shift;
	my $use_orange = shift;

	my ($address, $netmask) = split("/", $addr);

	my @zones = ("GREEN", "BLUE");
	if ($use_orange) {
		push(@zones, "ORANGE");
	}

	foreach my $zone (@zones) {
		next unless (exists $netsettings{$zone . "_ADDRESS"});

		my $zone_subnet = $netsettings{$zone . "_NETADDRESS"};
		my $zone_mask   = $netsettings{$zone . "_NETMASK"};

		if (&General::IpInSubnet($address, $zone_subnet, $zone_mask)) {
			return $netsettings{$zone . "_ADDRESS"};
		}
	}

	return 0;
}
sub get_internal_firewall_ip_address
{
	my $subnet = shift;
	my $use_orange = shift;

	my ($net_address, $net_mask) = split("/", $subnet);
	if ((!$net_mask) || ($net_mask ~~ ["32", "255.255.255.255"])) {
		return 0;
	}

	# Convert net mask into correct format for &General::IpInSubnet().
	$net_mask = &General::iporsubtodec($net_mask);

	my @addresses = &get_internal_firewall_ip_addresses($use_orange);
	foreach my $zone_address (@addresses) {
		if (&General::IpInSubnet($zone_address, $net_address, $net_mask)) {
			return $zone_address;
		}
	}

	return 0;
}

return 1;
Commit	Line	Data
2a81ab0d AM	1	#!/usr/bin/perl
	2	###############################################################################
	3	# #
	4	# IPFire.org - A linux based firewall #
5bee9a9d	5	# Copyright (C) 2013 Alexander Marx <amarx@ipfire.org> #
2a81ab0d AM	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	###############################################################################
2a81ab0d AM	21
	22	use strict;
	23	no warnings 'uninitialized';
	24
	25	package fwlib;
	26
	27	my %customnetwork=();
	28	my %customhost=();
	29	my %customgrp=();
	30	my %customservice=();
	31	my %customservicegrp=();
	32	my %ccdnet=();
	33	my %ccdhost=();
	34	my %ipsecconf=();
	35	my %ipsecsettings=();
	36	my %netsettings=();
	37	my %ovpnsettings=();
4e54e3c6	38	my %aliases=();
2a81ab0d AM	39
	40	require '/var/ipfire/general-functions.pl';
	41
	42	my $confignet = "${General::swroot}/fwhosts/customnetworks";
	43	my $confighost = "${General::swroot}/fwhosts/customhosts";
	44	my $configgrp = "${General::swroot}/fwhosts/customgroups";
	45	my $configsrv = "${General::swroot}/fwhosts/customservices";
	46	my $configsrvgrp = "${General::swroot}/fwhosts/customservicegrp";
	47	my $configccdnet = "${General::swroot}/ovpn/ccd.conf";
	48	my $configccdhost = "${General::swroot}/ovpn/ovpnconfig";
	49	my $configipsec = "${General::swroot}/vpn/config";
	50	my $configovpn = "${General::swroot}/ovpn/settings";
	51	my $val;
	52	my $field;
fd169d0a	53	my $netsettings = "${General::swroot}/ethernet/settings";
2a81ab0d AM	54
	55	&General::readhash("/var/ipfire/ethernet/settings", \%netsettings);
	56	&General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
	57	&General::readhash("${General::swroot}/vpn/settings", \%ipsecsettings);
2a81ab0d AM	58
	59	&General::readhasharray("$confignet", \%customnetwork);
	60	&General::readhasharray("$confighost", \%customhost);
	61	&General::readhasharray("$configgrp", \%customgrp);
	62	&General::readhasharray("$configccdnet", \%ccdnet);
	63	&General::readhasharray("$configccdhost", \%ccdhost);
	64	&General::readhasharray("$configipsec", \%ipsecconf);
	65	&General::readhasharray("$configsrv", \%customservice);
	66	&General::readhasharray("$configsrvgrp", \%customservicegrp);
085a20ec	67	&General::get_aliases(\%aliases);
2a81ab0d AM	68
	69	sub get_srv_prot
	70	{
	71	my $val=shift;
992394d5	72	foreach my $key (sort {$a <=> $b} keys %customservice){
2a81ab0d AM	73	if($customservice{$key}[0] eq $val){
	74	if ($customservice{$key}[0] eq $val){
	75	return $customservice{$key}[2];
	76	}
	77	}
	78	}
	79	}
	80	sub get_srvgrp_prot
	81	{
	82	my $val=shift;
	83	my @ips=();
	84	my $tcp;
	85	my $udp;
	86	my $icmp;
992394d5	87	foreach my $key (sort {$a <=> $b} keys %customservicegrp){
2a81ab0d AM	88	if($customservicegrp{$key}[0] eq $val){
	89	if (&get_srv_prot($customservicegrp{$key}[2]) eq 'TCP'){
	90	$tcp=1;
	91	}elsif(&get_srv_prot($customservicegrp{$key}[2]) eq 'UDP'){
	92	$udp=1;
	93	}elsif(&get_srv_prot($customservicegrp{$key}[2]) eq 'ICMP'){
	94	$icmp=1;
82b837cf AM	95	}else{
	96	#Protocols used in servicegroups
	97	push (@ips,$customservicegrp{$key}[2]);
	98	}
2a81ab0d AM	99	}
	100	}
	101	if ($tcp eq '1'){push (@ips,'TCP');}
	102	if ($udp eq '1'){push (@ips,'UDP');}
	103	if ($icmp eq '1'){push (@ips,'ICMP');}
	104	my $back=join(",",@ips);
	105	return $back;
	106
	107	}
2a81ab0d AM	108	sub get_srv_port
	109	{
	110	my $val=shift;
	111	my $field=shift;
	112	my $prot=shift;
992394d5	113	foreach my $key (sort {$a <=> $b} keys %customservice){
14bcb9a2 AM	114	if($customservice{$key}[0] eq $val && $customservice{$key}[2] eq $prot){
14bcb9a2 AM	115	return $customservice{$key}[$field];
2a81ab0d AM	116	}
	117	}
	118	}
	119	sub get_srvgrp_port
	120	{
	121	my $val=shift;
	122	my $prot=shift;
	123	my $back;
	124	my $value;
	125	my @ips=();
992394d5	126	foreach my $key (sort {$a <=> $b} keys %customservicegrp){
2a81ab0d AM	127	if($customservicegrp{$key}[0] eq $val){
	128	if ($prot ne 'ICMP'){
	129	$value=&get_srv_port($customservicegrp{$key}[2],1,$prot);
	130	}elsif ($prot eq 'ICMP'){
	131	$value=&get_srv_port($customservicegrp{$key}[2],3,$prot);
	132	}
	133	push (@ips,$value) if ($value ne '') ;
	134	}
	135	}
	136	if($prot ne 'ICMP'){
	137	if ($#ips gt 0){$back="-m multiport --dports ";}else{$back="--dport ";}
	138	}elsif ($prot eq 'ICMP'){
	139	$back="--icmp-type ";
	140	}
	141
	142	$back.=join(",",@ips);
	143	return $back;
	144	}
	145	sub get_ipsec_net_ip
	146	{
	147	my $val=shift;
	148	my $field=shift;
992394d5	149	foreach my $key (sort {$a <=> $b} keys %ipsecconf){
2a81ab0d AM	150	if($ipsecconf{$key}[1] eq $val){
	151	return $ipsecconf{$key}[$field];
	152	}
	153	}
	154	}
	155	sub get_ipsec_host_ip
	156	{
	157	my $val=shift;
	158	my $field=shift;
992394d5	159	foreach my $key (sort {$a <=> $b} keys %ipsecconf){
2a81ab0d AM	160	if($ipsecconf{$key}[1] eq $val){
	161	return $ipsecconf{$key}[$field];
	162	}
	163	}
	164	}
	165	sub get_ovpn_n2n_ip
	166	{
	167	my $val=shift;
	168	my $field=shift;
992394d5	169	foreach my $key (sort {$a <=> $b} keys %ccdhost){
2a81ab0d AM	170	if($ccdhost{$key}[1] eq $val){
	171	return $ccdhost{$key}[$field];
	172	}
	173	}
	174	}
	175	sub get_ovpn_host_ip
	176	{
	177	my $val=shift;
	178	my $field=shift;
992394d5	179	foreach my $key (sort {$a <=> $b} keys %ccdhost){
2a81ab0d AM	180	if($ccdhost{$key}[1] eq $val){
	181	return $ccdhost{$key}[$field];
	182	}
	183	}
	184	}
	185	sub get_ovpn_net_ip
	186	{
	187
	188	my $val=shift;
	189	my $field=shift;
992394d5	190	foreach my $key (sort {$a <=> $b} keys %ccdnet){
2a81ab0d AM	191	if($ccdnet{$key}[0] eq $val){
	192	return $ccdnet{$key}[$field];
	193	}
	194	}
	195	}
	196	sub get_grp_ip
	197	{
	198	my $val=shift;
	199	my $src=shift;
992394d5	200	foreach my $key (sort {$a <=> $b} keys %customgrp){
2a81ab0d AM	201	if ($customgrp{$key}[0] eq $val){
	202	&get_address($customgrp{$key}[3],$src);
	203	}
	204	}
	205
	206	}
	207	sub get_std_net_ip
	208	{
	209	my $val=shift;
ddcec9d3	210	my $con=shift;
2a81ab0d AM	211	if ($val eq 'ALL'){
	212	return "0.0.0.0/0.0.0.0";
	213	}elsif($val eq 'GREEN'){
	214	return "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}";
	215	}elsif($val eq 'ORANGE'){
	216	return "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}";
	217	}elsif($val eq 'BLUE'){
	218	return "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}";
62fc8511	219	}elsif($val eq 'RED'){
48f07c19	220	return "0.0.0.0/0";
2a81ab0d AM	221	}elsif($val =~ /OpenVPN/i){
	222	return "$ovpnsettings{'DOVPN_SUBNET'}";
	223	}elsif($val =~ /IPsec/i){
	224	return "$ipsecsettings{'RW_NET'}";
5d7faa45 AM	225	}elsif($val eq 'IPFire'){
5d7faa45 AM	226	return ;
2a81ab0d AM	227	}
2a81ab0d AM	228	}
48f07c19 AM	229	sub get_interface
	230	{
	231	my $net=shift;
	232	if($net eq "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}"){
	233	return "$netsettings{'GREEN_DEV'}";
	234	}
	235	if($net eq "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}"){
	236	return "$netsettings{'ORANGE_DEV'}";
	237	}
	238	if($net eq "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}"){
	239	return "$netsettings{'BLUE_DEV'}";
	240	}
	241	if($net eq "0.0.0.0/0"){
	242	return "$netsettings{'RED_DEV'}";
	243	}
	244	return "";
	245	}
2a81ab0d AM	246	sub get_net_ip
	247	{
	248	my $val=shift;
992394d5	249	foreach my $key (sort {$a <=> $b} keys %customnetwork){
2a81ab0d AM	250	if($customnetwork{$key}[0] eq $val){
	251	return "$customnetwork{$key}[1]/$customnetwork{$key}[2]";
	252	}
	253	}
	254	}
	255	sub get_host_ip
	256	{
	257	my $val=shift;
	258	my $src=shift;
992394d5	259	foreach my $key (sort {$a <=> $b} keys %customhost){
2a81ab0d AM	260	if($customhost{$key}[0] eq $val){
	261	if ($customhost{$key}[1] eq 'mac' && $src eq 'src'){
	262	return "-m mac --mac-source $customhost{$key}[2]";
	263	}elsif($customhost{$key}[1] eq 'ip' && $src eq 'src'){
	264	return "$customhost{$key}[2]";
	265	}elsif($customhost{$key}[1] eq 'ip' && $src eq 'tgt'){
	266	return "$customhost{$key}[2]";
	267	}elsif($customhost{$key}[1] eq 'mac' && $src eq 'tgt'){
	268	return "none";
	269	}
	270	}
	271	}
	272	}
fd169d0a AM	273	sub get_addresses
fd169d0a AM	274	{
4e54e3c6 AM	275	my $hash = shift;
	276	my $key = shift;
	277	my $type = shift;
	278
	279	my @addresses = ();
	280	my $addr_type;
	281	my $value;
	282	my $group_name;
	283
	284	if ($type eq "src") {
	285	$addr_type = $$hash{$key}[3];
	286	$value = $$hash{$key}[4];
	287
	288	} elsif ($type eq "tgt") {
	289	$addr_type = $$hash{$key}[5];
	290	$value = $$hash{$key}[6];
	291	}
	292
	293	if ($addr_type ~~ ["cust_grp_src", "cust_grp_tgt"]) {
	294	foreach my $grp (sort {$a <=> $b} keys %customgrp) {
	295	if ($customgrp{$grp}[0] eq $value) {
	296	my @address = &get_address($customgrp{$grp}[3], $customgrp{$grp}[2], $type);
	297
	298	if (@address) {
	299	push(@addresses, @address);
	300	}
	301	}
	302	}
	303	} else {
	304	my @address = &get_address($addr_type, $value, $type);
	305
	306	if (@address) {
	307	push(@addresses, @address);
	308	}
	309	}
	310
	311	return @addresses;
	312	}
fd169d0a AM	313	sub get_address
fd169d0a AM	314	{
4e54e3c6 AM	315	my $key = shift;
	316	my $value = shift;
	317	my $type = shift;
	318
	319	my @ret = ();
	320
	321	# If the user manually typed an address, we just check if it is a MAC
	322	# address. Otherwise, we assume that it is an IP address.
	323	if ($key ~~ ["src_addr", "tgt_addr"]) {
	324	if (&General::validmac($value)) {
48f07c19	325	push(@ret, ["-m mac --mac-source $value", ""]);
4e54e3c6	326	} else {
48f07c19	327	push(@ret, [$value, ""]);
4e54e3c6 AM	328	}
	329
	330	# If a default network interface (GREEN, BLUE, etc.) is selected, we
	331	# try to get the corresponding address of the network.
	332	} elsif ($key ~~ ["std_net_src", "std_net_tgt", "Standard Network"]) {
	333	my $external_interface = &get_external_interface();
	334
	335	my $network_address = &get_std_net_ip($value, $external_interface);
48f07c19	336
4e54e3c6	337	if ($network_address) {
48f07c19 AM	338	my $interface = &get_interface($network_address);
48f07c19 AM	339	push(@ret, [$network_address, $interface]);
4e54e3c6 AM	340	}
	341
	342	# Custom networks.
	343	} elsif ($key ~~ ["cust_net_src", "cust_net_tgt", "Custom Network"]) {
	344	my $network_address = &get_net_ip($value);
	345	if ($network_address) {
48f07c19	346	push(@ret, [$network_address, ""]);
4e54e3c6 AM	347	}
	348
	349	# Custom hosts.
	350	} elsif ($key ~~ ["cust_host_src", "cust_host_tgt", "Custom Host"]) {
	351	my $host_address = &get_host_ip($value, $type);
	352	if ($host_address) {
48f07c19	353	push(@ret, [$host_address, ""]);
4e54e3c6 AM	354	}
	355
	356	# OpenVPN networks.
	357	} elsif ($key ~~ ["ovpn_net_src", "ovpn_net_tgt", "OpenVPN static network"]) {
	358	my $network_address = &get_ovpn_net_ip($value, 1);
	359	if ($network_address) {
48f07c19	360	push(@ret, [$network_address, ""]);
4e54e3c6 AM	361	}
	362
	363	# OpenVPN hosts.
	364	} elsif ($key ~~ ["ovpn_host_src", "ovpn_host_tgt", "OpenVPN static host"]) {
	365	my $host_address = &get_ovpn_host_ip($value, 33);
	366	if ($host_address) {
48f07c19	367	push(@ret, [$host_address, ""]);
4e54e3c6 AM	368	}
	369
	370	# OpenVPN N2N.
	371	} elsif ($key ~~ ["ovpn_n2n_src", "ovpn_n2n_tgt", "OpenVPN N-2-N"]) {
	372	my $network_address = &get_ovpn_n2n_ip($value, 11);
	373	if ($network_address) {
48f07c19	374	push(@ret, [$network_address, ""]);
4e54e3c6 AM	375	}
	376
	377	# IPsec networks.
	378	} elsif ($key ~~ ["ipsec_net_src", "ipsec_net_tgt", "IpSec Network"]) {
	379	my $network_address = &get_ipsec_net_ip($value, 11);
	380	if ($network_address) {
48f07c19	381	push(@ret, [$network_address, ""]);
4e54e3c6 AM	382	}
	383
	384	# The firewall's own IP addresses.
	385	} elsif ($key ~~ ["ipfire", "ipfire_src"]) {
	386	# ALL
	387	if ($value eq "ALL") {
48f07c19	388	push(@ret, ["0/0", ""]);
4e54e3c6 AM	389
	390	# GREEN
	391	} elsif ($value eq "GREEN") {
48f07c19	392	push(@ret, [$netsettings{"GREEN_ADDRESS"}, ""]);
4e54e3c6 AM	393
	394	# BLUE
	395	} elsif ($value eq "BLUE") {
48f07c19	396	push(@ret, [$netsettings{"BLUE_ADDRESS"}, ""]);
4e54e3c6 AM	397
	398	# ORANGE
	399	} elsif ($value eq "ORANGE") {
48f07c19	400	push(@ret, [$netsettings{"ORANGE_ADDRESS"}, ""]);
4e54e3c6 AM	401
	402	# RED
	403	} elsif ($value ~~ ["RED", "RED1"]) {
	404	my $address = &get_external_address();
	405	if ($address) {
48f07c19	406	push(@ret, [$address, ""]);
4e54e3c6 AM	407	}
	408
	409	# Aliases
	410	} else {
085a20ec MT	411	my $alias = &get_alias($value);
085a20ec MT	412	if ($alias) {
48f07c19	413	push(@ret, [$alias, ""]);
4e54e3c6 AM	414	}
	415	}
	416
	417	# If nothing was selected, we assume "any".
	418	} else {
48f07c19	419	push(@ret, ["0/0", ""]);
4e54e3c6 AM	420	}
	421
	422	return @ret;
	423	}
fd169d0a AM	424	sub get_external_interface()
fd169d0a AM	425	{
4e54e3c6 AM	426	open(IFACE, "/var/ipfire/red/iface") or return "";
	427	my $iface = <IFACE>;
	428	close(IFACE);
	429
	430	return $iface;
	431	}
fd169d0a AM	432	sub get_external_address()
fd169d0a AM	433	{
4e54e3c6 AM	434	open(ADDR, "/var/ipfire/red/local-ipaddress") or return "";
	435	my $address = <ADDR>;
	436	close(ADDR);
	437
	438	return $address;
	439	}
fd169d0a AM	440	sub get_alias
fd169d0a AM	441	{
4e54e3c6 AM	442	my $id = shift;
	443
	444	foreach my $alias (sort keys %aliases) {
	445	if ($id eq $alias) {
085a20ec	446	return $aliases{$alias}{"IPT"};
4e54e3c6 AM	447	}
	448	}
	449	}
085a20ec MT	450
085a20ec MT	451	sub get_nat_address {
4e54e3c6 AM	452	my $zone = shift;
	453	my $source = shift;
	454
	455	# Any static address of any zone.
	456	if ($zone eq "AUTO") {
fd169d0a	457	if ($source && ($source !~ m/mac/i )) {
4e54e3c6 AM	458	my $firewall_ip = &get_internal_firewall_ip_address($source, 1);
	459	if ($firewall_ip) {
	460	return $firewall_ip;
	461	}
	462
	463	$firewall_ip = &get_matching_firewall_address($source, 1);
	464	if ($firewall_ip) {
	465	return $firewall_ip;
	466	}
	467	}
	468
	469	return &get_external_address();
	470
	471	} elsif ($zone eq "RED" \|\| $zone eq "GREEN" \|\| $zone eq "ORANGE" \|\| $zone eq "BLUE") {
c71499d8	472	return $netsettings{$zone . "_ADDRESS"};
4e54e3c6	473
085a20ec	474	} elsif ($zone ~~ ["Default IP", "ALL"]) {
4e54e3c6 AM	475	return &get_external_address();
	476
	477	} else {
085a20ec MT	478	my $alias = &get_alias($zone);
	479	unless ($alias) {
	480	$alias = &get_external_address();
	481	}
	482	return $alias;
4e54e3c6 AM	483	}
	484
	485	print_error("Could not find NAT address");
	486	}
085a20ec	487
fd169d0a AM	488	sub get_internal_firewall_ip_addresses
fd169d0a AM	489	{
4e54e3c6 AM	490	my $use_orange = shift;
	491
	492	my @zones = ("GREEN", "BLUE");
	493	if ($use_orange) {
	494	push(@zones, "ORANGE");
	495	}
	496
	497	my @addresses = ();
	498	for my $zone (@zones) {
c71499d8	499	next unless (exists $netsettings{$zone . "_ADDRESS"});
4e54e3c6	500
c71499d8	501	my $zone_address = $netsettings{$zone . "_ADDRESS"};
4e54e3c6 AM	502	push(@addresses, $zone_address);
	503	}
	504
	505	return @addresses;
	506	}
fd169d0a AM	507	sub get_matching_firewall_address
fd169d0a AM	508	{
4e54e3c6 AM	509	my $addr = shift;
	510	my $use_orange = shift;
	511
	512	my ($address, $netmask) = split("/", $addr);
	513
	514	my @zones = ("GREEN", "BLUE");
	515	if ($use_orange) {
	516	push(@zones, "ORANGE");
	517	}
	518
	519	foreach my $zone (@zones) {
c71499d8	520	next unless (exists $netsettings{$zone . "_ADDRESS"});
4e54e3c6	521
c71499d8 AM	522	my $zone_subnet = $netsettings{$zone . "_NETADDRESS"};
c71499d8 AM	523	my $zone_mask = $netsettings{$zone . "_NETMASK"};
4e54e3c6 AM	524
4e54e3c6 AM	525	if (&General::IpInSubnet($address, $zone_subnet, $zone_mask)) {
c71499d8	526	return $netsettings{$zone . "_ADDRESS"};
4e54e3c6 AM	527	}
	528	}
	529
	530	return 0;
	531	}
fd169d0a AM	532	sub get_internal_firewall_ip_address
fd169d0a AM	533	{
4e54e3c6 AM	534	my $subnet = shift;
	535	my $use_orange = shift;
	536
	537	my ($net_address, $net_mask) = split("/", $subnet);
	538	if ((!$net_mask) \|\| ($net_mask ~~ ["32", "255.255.255.255"])) {
	539	return 0;
	540	}
	541
aa5f4b65 MT	542	# Convert net mask into correct format for &General::IpInSubnet().
	543	$net_mask = &General::iporsubtodec($net_mask);
	544
4e54e3c6 AM	545	my @addresses = &get_internal_firewall_ip_addresses($use_orange);
	546	foreach my $zone_address (@addresses) {
	547	if (&General::IpInSubnet($zone_address, $net_address, $net_mask)) {
	548	return $zone_address;
	549	}
	550	}
	551
	552	return 0;
	553	}
	554
2a81ab0d	555	return 1;