pfSense

        rc.newwanip

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

        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("config.inc");

        require_once("functions.inc");

        /* WAN IP address has changed */

        /* make sure to wait until the boot scripts have finished */

        while (file_exists("{$g['varrun_path']}/booting")) {

                sleep(1);

        }

        $curwanip = get_current_wan_address();

        /*      dhclient or MPD told us that the IP address has changed;

                let's see if that's really true to avoid reloading things

                when it's not really necessary (dhclient likes to

                execute its dhclient-exit-hooks also on renewals)

        */

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

                $oldwanip = chop(file_get_contents("{$g['vardb_path']}/wanip"));

                if ($curwanip == $oldwanip)

                        return 0;       /* nothing to do */

        }

        /* reload firewall rules */

        filter_rules_generate();

        /* flush NAT table */

        filter_flush_nat_table();

        /* reconfigure IPsec tunnels */

        vpn_ipsec_configure(true);

        /* regenerate resolv.conf if DNS overrides are allowed or the BigPond

           client is enabled */

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

                        ($config['interfaces']['wan']['ipaddr'] == "bigpond"))

                system_resolvconf_generate(true);

        /* fire up the BigPond client, if necessary */

        if ($config['interfaces']['wan']['ipaddr'] == "bigpond")

                interfaces_wan_bigpond_configure($curwanip);

        /* perform RFC 2136 DNS update */

        services_dnsupdate_process();

        /* write current WAN IP to file */

        $fd = @fopen("{$g['vardb_path']}/wanip", "w");

        if ($fd) {

                fwrite($fd, $curwanip);

                fclose($fd);

        }

	filter_configure_sync();

?>