pfSense

<?php

/*

	interfaces.inc

	Copyright (C) 2004 Scott Ullrich

	All rights reserved.

	originally part of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.

	All rights reserved.

	Redistribution and use in source and binary forms, with or without

	modification, are permitted provided that the following conditions are met:

	1. Redistributions of source code must retain the above copyright notice,

	   this list of conditions and the following disclaimer.

	2. Redistributions in binary form must reproduce the above copyright

	   notice, this list of conditions and the following disclaimer in the

	   documentation and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,

	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,

	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

	POSSIBILITY OF SUCH DAMAGE.

*/

/* include all configuration functions */

require_once("functions.inc");

function interfaces_loopback_configure() {

	global $config, $g;

	mwexec("/sbin/ifconfig lo0 127.0.0.1");

	return 0;

}

function interfaces_vlan_configure() {

	global $config, $g;

	if (is_array($config['vlans']['vlan']) && count($config['vlans']['vlan'])) {

		/* load the VLAN module */

		mwexec("/sbin/kldload if_vlan");

		/* devices with native VLAN support */

		$vlan_native_supp = explode(" ", "bge em gx nge ti txp");

		/* devices with long frame support */

		$vlan_long_supp = explode(" ", "dc fxp sis ste tl tx xl");

		$i = 0;

		foreach ($config['vlans']['vlan'] as $vlan) {

			$cmd = "/sbin/ifconfig vlan{$i} create vlan " .

				escapeshellarg($vlan['tag']) . " vlandev " .

				escapeshellarg($vlan['if']);

			/* get driver name */

			for ($j = 0; $j < strlen($vlan['if']); $j++) {

				if ($vlan['if'][$j] >= '0' && $vlan['if'][$j] <= '9')

					break;

			}

			$drvname = substr($vlan['if'], 0, $j);

			if (in_array($drvname, $vlan_native_supp))

				$cmd .= " link0";

			else if (in_array($drvname, $vlan_long_supp))

				$cmd .= " mtu 1500";

			mwexec($cmd);

			/* make sure the parent interface is up */

			mwexec("/sbin/ifconfig " . escapeshellarg($vlan['if']) . " up");

			$i++;

		}

	}

	return 0;

}

function interfaces_lan_configure() {

	global $config, $g;

	if ($g['booting'])

		echo "Configuring LAN interface... ";

	$lancfg = $config['interfaces']['lan'];

	/* wireless configuration? */

	if (is_array($lancfg['wireless']))

		interfaces_wireless_configure($lancfg['if'], $lancfg['wireless']);

	/* MAC spoofing? */

	if ($lancfg['spoofmac'])

		mwexec("/sbin/ifconfig " . escapeshellarg($lancfg['if']) .

			" link " . escapeshellarg($lancfg['spoofmac']));

	/* media */

	if ($lancfg['media'] || $lancfg['mediaopt']) {

		$cmd = "/sbin/ifconfig " . escapeshellarg($lancfg['if']);

		if ($lancfg['media'])

			$cmd .= " media " . escapeshellarg($lancfg['media']);

		if ($lancfg['mediaopt'])

			$cmd .= " mediaopt " . escapeshellarg($lancfg['mediaopt']);

		mwexec($cmd);

	}

	mwexec("/sbin/ifconfig " . escapeshellarg($lancfg['if']) . " " .

		escapeshellarg($lancfg['ipaddr'] . "/" . $lancfg['subnet']));

	if (!$g['booting']) {

		/* make new hosts file */

		system_hosts_generate();

		/* reconfigure static routes (kernel may have deleted them) */

		system_routing_configure();

		/* reload ipfilter (address may have changed) */

		filter_configure();

		/* reload IPsec tunnels */

		vpn_ipsec_configure();

		/* reload dhcpd (gateway may have changed) */

		services_dhcpd_configure();

		/* reload dnsmasq */

		services_dnsmasq_configure();

		/* reload webgui */

		system_webgui_start();

		/* reload captive portal */

		captiveportal_configure();

	}

	enable_hardware_offloading($lancfg['if']);

	if ($g['booting'])

		echo "done\n";

	return 0;

}

function interfaces_optional_configure() {

	global $config, $g;

	global $bridgeconfig;

	/* Reset bridge configuration.	Interfaces will add to it. */

	$bridgeconfig = "";

	for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {

		interfaces_optional_configure_if($i);

	}

	if ($bridgeconfig) {

		/* Set the system bridge configuration and enable bridging. */

		mwexec("/sbin/sysctl net.link.ether.bridge_cfg=" . $bridgeconfig);

		if (isset($config['bridge']['filteringbridge']))

			mwexec("/sbin/sysctl net.link.ether.bridge.pf=1");

		mwexec("/sbin/sysctl net.link.ether.bridge=1");

	} else {

		mwexec("/sbin/sysctl net.link.ether.bridge.pf=0");

		mwexec("/sbin/sysctl net.link.ether.bridge=0");

	}

	if (!$g['booting']) {

		/* reconfigure static routes (kernel may have deleted them) */

		system_routing_configure();

		/* reload ipfilter (address may have changed) */

		filter_configure();

		/* reload IPsec tunnels */

		vpn_ipsec_configure();

		/* reload dhcpd (interface enabled/disabled/bridged status may have changed) */

		services_dhcpd_configure();

		/* restart dnsmasq */

		services_dnsmasq_configure();

	}

	return 0;

}

function interfaces_optional_configure_if($opti) {

	global $config, $g;

	global $bridgeconfig;

	$optcfg = $config['interfaces']['opt' . $opti];

	if ($g['booting']) {

		$optdescr = "";

		if ($optcfg['descr'])

			$optdescr = " ({$optcfg['descr']})";

		echo "Configuring OPT{$opti}{$optdescr} interface... ";

	}

	if (isset($optcfg['enable'])) {

		/* wireless configuration? */

		if (is_array($optcfg['wireless']))

			interfaces_wireless_configure($optcfg['if'], $optcfg['wireless']);

		/* MAC spoofing? */

		if ($optcfg['spoofmac'])

			mwexec("/sbin/ifconfig " . escapeshellarg($optcfg['if']) .

				" link " . escapeshellarg($optcfg['spoofmac']));

		/* media */

		if ($optcfg['media'] || $optcfg['mediaopt']) {

			$cmd = "/sbin/ifconfig " . escapeshellarg($optcfg['if']);

			if ($optcfg['media'])

				$cmd .= " media " . escapeshellarg($optcfg['media']);

			if ($optcfg['mediaopt'])

				$cmd .= " mediaopt " . escapeshellarg($optcfg['mediaopt']);

			mwexec($cmd);

		}

		/* OpenVPN configuration? */

 		if (isset($optcfg['ovpn'])) {

 			if (strstr($if, "tap"))

 				ovpn_link_tap();

 		}

		/* bridged? */

		if ($optcfg['bridge']) {

			mwexec("/sbin/ifconfig " . escapeshellarg($optcfg['if']) .

				" delete up");

			if ($bridgeconfig != "")

				$bridgeconfig .= ",";

			$bridgeconfig .= $optcfg['if'] . ":" . $opti . "," .

				$config['interfaces'][$optcfg['bridge']]['if'] .

				":" . $opti;

		} else {

			mwexec("/sbin/ifconfig " . escapeshellarg($optcfg['if']) . " " .

				escapeshellarg($optcfg['ipaddr'] . "/" . $optcfg['subnet']));

		}

	} else {

		mwexec("/sbin/ifconfig " . escapeshellarg($optcfg['if']) .

			" delete down");

	}

	enable_hardware_offloading(escapeshellarg($optcfg['if']));

	if ($g['booting'])

		echo "done\n";

	return 0;

}

function interfaces_wireless_configure($if, $wlcfg) {

	global $config, $g;

	/* wireless configuration */

	$ifcargs = escapeshellarg($if) .

		" ssid " . escapeshellarg($wlcfg['ssid']) . " channel " .

		escapeshellarg($wlcfg['channel']) . " ";

	if ($wlcfg['stationname'])

		$ifcargs .= "stationname " . escapeshellarg($wlcfg['stationname']) . " ";

	if (isset($wlcfg['wep']['enable']) && is_array($wlcfg['wep']['key'])) {

		$ifcargs .= "wepmode on ";

		$i = 1;

		foreach ($wlcfg['wep']['key'] as $wepkey) {

			$ifcargs .= "wepkey " . escapeshellarg("{$i}:{$wepkey['value']}") . " ";

			if (isset($wepkey['txkey'])) {

				$ifcargs .= "weptxkey {$i} ";

			}

			$i++;

		}

	} else {

		$ifcargs .= "wepmode off ";

	}

	switch ($wlcfg['mode']) {

		case 'hostap':

			if (strstr($if, "wi"))

				$ifcargs .= "-mediaopt ibss mediaopt hostap ";

			break;

		case 'ibss':

		case 'IBSS':

			if (strstr($if, "wi"))

				$ifcargs .= "-mediaopt hostap mediaopt ibss ";

			else if (strstr($if, "an"))

				$ifcargs .= "mediaopt adhoc ";

			break;

		case 'bss':

		case 'BSS':

			if (strstr($if, "wi"))

				$ifcargs .= "-mediaopt hostap -mediaopt ibss ";

			else if (strstr($if, "an"))

				$ifcargs .= "-mediaopt adhoc ";

			break;

	}

	$ifcargs .= "up";

	mwexec("/sbin/ifconfig " . $ifcargs);

	return 0;

}

function interfaces_wan_configure() {

	global $config, $g;

	$wancfg = $config['interfaces']['wan'];

	if ($g['booting'])

		echo "Configuring WAN interface... ";

	else {

		/* kill dhclient */

		killbypid("{$g['varrun_path']}/dhclient.pid");

		/* kill PPPoE client (mpd) */

		killbypid("{$g['varrun_path']}/mpd.pid");

		/* wait for processes to die */

		sleep(2);

		unlink_if_exists("{$g['varetc_path']}/dhclient.conf");

		unlink_if_exists("{$g['varetc_path']}/mpd.conf");

		unlink_if_exists("{$g['varetc_path']}/mpd.links");

		unlink_if_exists("{$g['vardb_path']}/wanip");

		unlink_if_exists("{$g['varetc_path']}/nameservers.conf");

	}

	/* remove all addresses first */

	while (mwexec("/sbin/ifconfig " . escapeshellarg($wancfg['if']) . " -alias") == 0);

	mwexec("/sbin/ifconfig " . escapeshellarg($wancfg['if']) . " down");

	/* wireless configuration? */

	if (is_array($wancfg['wireless']))

		interfaces_wireless_configure($wancfg['if'], $wancfg['wireless']);

	if ($wancfg['spoofmac'])

		mwexec("/sbin/ifconfig " . escapeshellarg($wancfg['if']) .

			" link " . escapeshellarg($wancfg['spoofmac']));

	/* media */

	if ($wancfg['media'] || $wancfg['mediaopt']) {

		$cmd = "/sbin/ifconfig " . escapeshellarg($wancfg['if']);

		if ($wancfg['media'])

			$cmd .= " media " . escapeshellarg($wancfg['media']);

		if ($wancfg['mediaopt'])

			$cmd .= " mediaopt " . escapeshellarg($wancfg['mediaopt']);

		mwexec($cmd);

	}

	switch ($wancfg['ipaddr']) {

		case 'dhcp':

			interfaces_wan_dhcp_configure();

			break;

		case 'pppoe':

			interfaces_wan_pppoe_configure();

			break;

		case 'pptp':

			interfaces_wan_pptp_configure();

			break;

		case 'bigpond':

			/* just configure DHCP for now; fire up bpalogin when we've got the lease */

			interfaces_wan_dhcp_configure();

			break;

		default:

			if (isset($wancfg['ispointtopoint']) && $wancfg['pointtopoint']) {

				mwexec("/sbin/ifconfig " . escapeshellarg($wancfg['if']) . " " .

					escapeshellarg($wancfg['ipaddr'] . "/" . $wancfg['subnet']) .

					" " . escapeshellarg($wancfg['pointtopoint']) . " up");

			} else {

				mwexec("/sbin/ifconfig " . escapeshellarg($wancfg['if']) . " " .

					escapeshellarg($wancfg['ipaddr'] . "/" . $wancfg['subnet']));

			}

			/* install default route */

			mwexec("/sbin/route delete default");

			mwexec("/sbin/route add default " . escapeshellarg($wancfg['gateway']));

			/* resync ipfilter (done automatically for DHCP/PPPoE/PPTP) */

			filter_resync();

	}

	if (!$g['booting']) {

		/* reconfigure static routes (kernel may have deleted them) */

		system_routing_configure();

		/* reload ipfilter */

		filter_configure();

		/* reload ipsec tunnels */

		vpn_ipsec_configure();

		/* restart ez-ipupdate */

		services_dyndns_configure();

		/* force DNS update */

		services_dnsupdate_process();

		/* restart dnsmasq */

		services_dnsmasq_configure();

	}

	enable_hardware_offloading($wancfg['if']);

	if ($g['booting'])

		echo "done\n";

	return 0;

}

function interfaces_wan_dhcp_configure() {

	global $config, $g;

	$wancfg = $config['interfaces']['wan'];

	/* generate dhclient.conf */

	$fd = fopen("{$g['varetc_path']}/dhclient.conf", "w");

	if (!$fd) {

		printf("Error: cannot open dhclient.conf in interfaces_wan_dhcp_configure().\n");

		return 1;

	}

 	$dhclientconf = "";

 	if ($wancfg['dhcphostname']) {

		$dhclientconf .= <<<EOD

send dhcp-client-identifier "{$wancfg['dhcphostname']}";

interface "{$wancfg['if']}" {

	send host-name "{$wancfg['dhcphostname']}";

}

EOD;

	}

	fwrite($fd, $dhclientconf);

	fclose($fd);

	/* fire up dhclient - don't wait for the lease (-nw) */

	mwexec("/sbin/dhclient -nw -cf {$g['varetc_path']}/dhclient.conf " .

		escapeshellarg($wancfg['if']) . " &");

	return 0;

}

function interfaces_wan_dhcp_down() {

	mwexec("/sbin/dhclient -r");

	sleep(3);

}

function interfaces_wan_dhcp_up() {

	interfaces_wan_dhcp_configure();

	sleep(3);

}

function interfaces_wan_pppoe_configure() {

	global $config, $g;

	$wancfg = $config['interfaces']['wan'];

	$pppoecfg = $config['pppoe'];

	/* generate mpd.conf */

	$fd = fopen("{$g['varetc_path']}/mpd.conf", "w");

	if (!$fd) {

		printf("Error: cannot open mpd.conf in interfaces_wan_pppoe_configure().\n");

		return 1;

	}

	$idle = 0;

	if (isset($pppoecfg['ondemand'])) {

		$ondemand = "enable";

		if ($pppoecfg['timeout'])

			$idle = $pppoecfg['timeout'];

	} else {

		$ondemand = "disable";

	}

	$mpdconf = <<<EOD

pppoe:

	new -i ng0 pppoe pppoe

	set iface route default

	set iface {$ondemand} on-demand

	set iface idle {$idle}

	set iface up-script /usr/local/sbin/ppp-linkup

EOD;

	if (isset($pppoecfg['ondemand'])) {

		$mpdconf .= <<<EOD

	set iface addrs 10.0.0.1 10.0.0.2

EOD;

	}

	$mpdconf .= <<<EOD

	set bundle disable multilink

	set bundle authname "{$pppoecfg['username']}"

	set bundle password "{$pppoecfg['password']}"

	set link keep-alive 10 60

	set link max-redial 0

	set link no acfcomp protocomp

	set link disable pap chap

	set link accept chap

	set link mtu 1492

	set ipcp yes vjcomp

	set ipcp ranges 0.0.0.0/0 0.0.0.0/0

EOD;

	if (isset($config['system']['dnsallowoverride'])) {

		$mpdconf .= <<<EOD

	set ipcp enable req-pri-dns

	set ipcp enable req-sec-dns

EOD;

	}

	$mpdconf .= <<<EOD

	open iface

EOD;

	fwrite($fd, $mpdconf);

	fclose($fd);

	/* generate mpd.links */

	$fd = fopen("{$g['varetc_path']}/mpd.links", "w");

	if (!$fd) {

		printf("Error: cannot open mpd.links in interfaces_wan_pppoe_configure().\n");

		return 1;

	}

	$mpdconf = <<<EOD

pppoe:

	set link type pppoe

	set pppoe iface {$wancfg['if']}

	set pppoe service "{$pppoecfg['provider']}"

	set pppoe enable originate

	set pppoe disable incoming

EOD;

	fwrite($fd, $mpdconf);

	fclose($fd);

	/* fire up mpd */

	mwexec("/usr/local/sbin/mpd -b -d {$g['varetc_path']} -p {$g['varrun_path']}/mpd.pid pppoe");

	return 0;

}

function interfaces_wan_pppoe_down() {

	global $g;

	sigkillbypid("{$g['varrun_path']}/mpd.pid", "SIGUSR2");

	sleep(3);

}

function interfaces_wan_pppoe_up() {

	global $g;

	sigkillbypid("{$g['varrun_path']}/mpd.pid", "SIGUSR1");

	sleep(3);

}

function interfaces_wan_pptp_configure() {

	global $config, $g;

	$wancfg = $config['interfaces']['wan'];

	$pptpcfg = $config['pptp'];

	/* generate mpd.conf */

	$fd = fopen("{$g['varetc_path']}/mpd.conf", "w");

	if (!$fd) {

		printf("Error: cannot open mpd.conf in interfaces_wan_pptp_configure().\n");

		return 1;

	}

	$idle = 0;

	if (isset($pptpcfg['ondemand'])) {

		$ondemand = "enable";

		if ($pptpcfg['timeout'])

			$idle = $pptpcfg['timeout'];

	} else {

		$ondemand = "disable";

	}

	$mpdconf = <<<EOD

pptp:

	new -i ng0 pptp pptp

	set iface route default

	set iface {$ondemand} on-demand

	set iface idle {$idle}

	set iface up-script /usr/local/sbin/ppp-linkup

EOD;

	if (isset($pptpcfg['ondemand'])) {

		$mpdconf .= <<<EOD

	set iface addrs 10.0.0.1 10.0.0.2

EOD;

	}

	$mpdconf .= <<<EOD

	set bundle disable multilink

	set bundle authname "{$pptpcfg['username']}"

	set bundle password "{$pptpcfg['password']}"

	set link keep-alive 10 60

	set link max-redial 0

	set link no acfcomp protocomp

	set link disable pap chap

	set link accept chap

	set ipcp no vjcomp

	set ipcp ranges 0.0.0.0/0 0.0.0.0/0

EOD;

	if (isset($config['system']['dnsallowoverride'])) {

		$mpdconf .= <<<EOD

	set ipcp enable req-pri-dns

	set ipcp enable req-sec-dns

EOD;

	}

	$mpdconf .= <<<EOD

	open

EOD;

	fwrite($fd, $mpdconf);

	fclose($fd);

	/* generate mpd.links */

	$fd = fopen("{$g['varetc_path']}/mpd.links", "w");

	if (!$fd) {

		printf("Error: cannot open mpd.links in interfaces_wan_pptp_configure().\n");

		return 1;

	}

	$mpdconf = <<<EOD

pptp:

	set link type pptp

	set pptp enable originate outcall

	set pptp disable windowing

	set pptp self {$pptpcfg['local']}

	set pptp peer {$pptpcfg['remote']}

EOD;

	fwrite($fd, $mpdconf);

	fclose($fd);

	/* configure interface */

	mwexec("/sbin/ifconfig " . escapeshellarg($wancfg['if']) . " " .

		escapeshellarg($pptpcfg['local'] . "/" . $pptpcfg['subnet']));

	/* fire up mpd */

	mwexec("/usr/local/sbin/mpd -b -d {$g['varetc_path']} -p {$g['varrun_path']}/mpd.pid pptp");

	return 0;

}

function interfaces_wan_pptp_down() {

	global $g;

	sigkillbypid("{$g['varrun_path']}/mpd.pid", "SIGUSR2");

	sleep(3);

}

function interfaces_wan_pptp_up() {

	global $g;

	sigkillbypid("{$g['varrun_path']}/mpd.pid", "SIGUSR1");

	sleep(3);

}

function interfaces_wan_bigpond_configure($curwanip) {

	global $config, $g;

	$bpcfg = $config['bigpond'];

	if (!$curwanip) {

		/* IP address not configured yet, exit */

		return 0;

	}

	/* kill bpalogin */

	killbyname("bpalogin");

	/* wait a moment */

	sleep(1);

	/* get the default domain */

	$nfd = @fopen("{$g['varetc_path']}/defaultdomain.conf", "r");

	if ($nfd) {

		$defaultdomain = trim(fgets($nfd));

		fclose($nfd);

	}

	/* generate bpalogin.conf */

	$fd = fopen("{$g['varetc_path']}/bpalogin.conf", "w");

	if (!$fd) {

		printf("Error: cannot open bpalogin.conf in interfaces_wan_bigpond_configure().\n");

		return 1;

	}

	if (!$bpcfg['authserver'])

		$bpcfg['authserver'] = "dce-server";

	if (!$bpcfg['authdomain'])

		$bpcfg['authdomain'] = $defaultdomain;

	$bpconf = <<<EOD

username {$bpcfg['username']}

password {$bpcfg['password']}

authserver {$bpcfg['authserver']}

authdomain {$bpcfg['authdomain']}

localport 5050

EOD;

	if ($bpcfg['minheartbeatinterval'])

		$bpconf .= "minheartbeatinterval {$bpcfg['minheartbeatinterval']}\n";

	fwrite($fd, $bpconf);

	fclose($fd);

	/* fire up bpalogin */

	mwexec("/usr/local/sbin/bpalogin -c {$g['varetc_path']}/bpalogin.conf");

	return 0;

}

function get_real_wan_interface() {

	global $config, $g;

	$wancfg = $config['interfaces']['wan'];

	$wanif = $wancfg['if'];

	if (($wancfg['ipaddr'] == "pppoe") || ($wancfg['ipaddr'] == "pptp")) {

		$wanif = $g['pppoe_interface'];

	}

	return $wanif;

}

function get_current_wan_address() {

	global $config, $g;

	$wancfg = $config['interfaces']['wan'];

	if (in_array($wancfg['ipaddr'], array('pppoe','dhcp','pptp','bigpond'))) {

		/* dynamic WAN IP address, find out which one */

		$wanif = get_real_wan_interface();

		/* get interface info with netstat */

		exec("/usr/bin/netstat -nWI " . escapeshellarg($wanif) . " -f inet", $ifinfo);

		if (isset($ifinfo[1])) {

			$aif = preg_split("/\s+/", $ifinfo[1]);

			$curwanip = chop($aif[3]);

			if ($curwanip && is_ipaddr($curwanip) && ($curwanip != "0.0.0.0"))

				return $curwanip;

		}

		return null;

	} else {

		/* static WAN IP address */

		return $wancfg['ipaddr'];

	}

}

?>