pfSense

#!/usr/local/bin/php -f

<?php

/*

	rc.newwanip

	Copyright (C) 2006 Scott Ullrich (sullrich@gmail.com)

	part of pfSense (http://www.pfsense.com)

	Originally part of m0n0wall (http://m0n0.ch)

	Copyright (C) 2003-2005 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.

*/

/* parse the configuration and include all functions used below */

require_once("globals.inc");

require_once("config.inc");

require_once("functions.inc");

require_once("filter.inc");

require_once("shaper.inc");

require_once("ipsec.inc");

require_once("vpn.inc");

require_once("openvpn.inc");

require_once("IPv6.inc");

require_once("rrd.inc");

// Do not process while booting

if($g['booting'])

	exit;

function restart_packages() {

	global $oldip, $curwanip, $g;

	/* restart packages */

	system_ntp_configure(false);

	mwexec_bg("/usr/local/sbin/ntpdate_sync_once.sh", true);

	log_error("{$g['product_name']} package system has detected an ip change $oldip ->  $curwanip ... Restarting packages.");

	send_event("service reload packages");

}

/* Interface IP address has changed */

$argument = str_replace("\n", "", $argv[1]);

log_error("rc.newwanip: Informational is starting {$argument}.");

if(empty($argument)) {

	$interface = "wan";

	$interface_real = get_real_interface();

} else {

	$interface = convert_real_interface_to_friendly_interface_name($argument);

	$interface_real = $argument;

}

if(empty($argument))

	$curwanip = get_interface_ip();

else {

	$curwanip = find_interface_ip($interface_real, true);

	if($curwanip == "")

		$curwanip = get_interface_ip($interface);

	if (($curwanip == "") && !(isset($config['interfaces'][$interface]['ipaddr']))) {

		log_error("Interface does not have an IP address, nothing to do.");

		return;

	}

}

log_error("rc.newwanip: on (IP address: {$curwanip}) (interface: {$interface}) (real interface: {$interface_real}).");

if($curwanip == "0.0.0.0" || !is_ipaddr($curwanip)) {

	log_error("rc.newwanip: Failed to update {$interface} IP, restarting...");

	send_event("interface reconfigure {$interface}");

	exit;

}

if (empty($interface)) {

	filter_configure();

	restart_packages();

	exit;

}

$oldip = "0.0.0.0";

if (file_exists("{$g['vardb_path']}/{$interface}_cacheip"))

	$oldip = file_get_contents("{$g['vardb_path']}/{$interface}_cacheip");

/* regenerate resolv.conf if DNS overrides are allowed */

system_resolvconf_generate(true);

/* write current WAN IP to file */

file_put_contents("{$g['vardb_path']}/{$interface}_ip", $curwanip);

link_interface_to_vips($interface, "update");

unset($gre);

$gre = link_interface_to_gre($interface);

if (!empty($gre))

	array_walk($gre, 'interface_gre_configure');

unset($gif);

$gif = link_interface_to_gif($interface);

if (!empty($gif))

	array_walk($gif, 'interface_gif_configure');

$grouptmp = link_interface_to_group($interface);

if (!empty($grouptmp))

	array_walk($grouptmp, 'interface_group_add_member');

unset($bridgetmp);

$bridgetmp = link_interface_to_bridge($interface);

if (!empty($bridgetmp))

	interface_bridge_add_member($bridgetmp, $interface_real);

/* make new hosts file */

system_hosts_generate();

/* check tunneled IPv6 interface tracking */

switch($config['interfaces'][$interface]['ipaddrv6']) {

	case "6to4":

		interface_6to4_configure($interface, $config['interfaces'][$interface]);

		break;

	case "6rd":

		interface_6rd_configure($interface, $config['interfaces'][$interface]);

		break;

	case "dhcp6":

		if (isset($config['interfaces'][$interface]['dhcp6usev4iface']))

			interface_dhcpv6_configure($interface, $config['interfaces'][$interface]);

		break;

}

/* Check Gif tunnels */

if(is_array($config['gifs']['gif'])){

	foreach($config['gifs']['gif'] as $gif) {

		if($gif['if'] == $interface) {

			foreach($config['interfaces'] as $ifname => $ifparent) {

				// echo "interface $ifparent, ifname $ifname, gif {$gif['gifif']}\n";

				if(($ifparent['if'] == $gif['gifif']) && (isset($ifparent['enable']))) {

					// echo "Running routing configure for $ifname\n";

					$gif['gifif'] = interface_gif_configure($gif);

					$confif = convert_real_interface_to_friendly_interface_name($gif['gifif']);

					if ($confif <> "")

						interface_configure($confif);

					system_routing_configure($ifname);

				}

			}

		}

	}

}

/*

 * We need to force sync VPNs on such even when the IP is the same for dynamic interfaces.

 * Even with the same IP the VPN software is unhappy with the IP disappearing, and we

 * could be failing back in which case we need to switch IPs back anyhow.

 */

if (!is_ipaddr($oldip) || $curwanip != $oldip || !is_ipaddrv4($config['interfaces'][$interface]['ipaddr'])) {

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

	system_routing_configure($interface);

	/* reconfigure our gateway monitor */

	setup_gateways_monitor();

	file_put_contents("{$g['vardb_path']}/{$interface}_cacheip", $curwanip);

	/* perform RFC 2136 DNS update */

	services_dnsupdate_process($interface);

	/* signal dyndns update */

	services_dyndns_configure($interface);

	/* reconfigure IPsec tunnels */

	vpn_ipsec_force_reload($interface);

	/* start OpenVPN server & clients */

	if (substr($interface_real, 0, 4) != "ovpn")

		openvpn_resync_all($interface);

	/* reload graphing functions */

	enable_rrd_graphing();

	/* reload igmpproxy */

	services_igmpproxy_configure();

	/* restart snmp */

	services_snmpd_configure();

	restart_packages();

}

/* signal filter reload */

filter_configure();

?>