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#!/usr/local/bin/php-cgi -f
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<?php
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/*
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* rc.kill_states
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*
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* Copyright (c) 2004-2015 Electric Sheep Fencing, LLC. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* "This product includes software developed by the pfSense Project
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* for use in the pfSense® software distribution. (http://www.pfsense.org/).
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*
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* 4. The names "pfSense" and "pfSense Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* coreteam@pfsense.org.
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*
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* 5. Products derived from this software may not be called "pfSense"
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* nor may "pfSense" appear in their names without prior written
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* permission of the Electric Sheep Fencing, LLC.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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*
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* "This product includes software developed by the pfSense Project
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* for use in the pfSense software distribution (http://www.pfsense.org/).
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*
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* THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* parse the configuration and include all functions used below */
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require_once("globals.inc");
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require_once("config.inc");
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require_once("interfaces.inc");
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require_once("util.inc");
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// Do not process while booting
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if (platform_booting()) {
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return;
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}
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/* Interface address to cleanup states */
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$interface = str_replace("\n", "", $argv[1]);
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/* IP address to cleanup states */
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$local_ip = str_replace("\n", "", $argv[2]);
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if (empty($interface) || !does_interface_exist($interface)) {
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log_error("rc.kill_states: Invalid interface '{$interface}'");
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return;
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}
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if (!empty($local_ip)) {
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list($local_ip, $subnet_bits) = explode("/", $local_ip);
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if (empty($subnet_bits)) {
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$subnet_bits = "32";
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}
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if (!is_ipaddr($local_ip)) {
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log_error("rc.kill_states: Invalid IP address '{$local_ip}'");
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return;
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}
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}
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if (isset($config['system']['gw_down_kill_states'])) {
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if (!empty($local_ip)) {
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log_error("rc.kill_states: Removing states for IP {$local_ip}/{$subnet_bits}");
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$nat_states = exec_command("/sbin/pfctl -i {$interface} -ss | " .
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"/usr/bin/egrep '\-> +{$local_ip}:[0-9]+ +\->'");
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$cleared_states = array();
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foreach (explode("\n", $nat_states) as $nat_state) {
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if (preg_match_all('/([\d\.]+):[\d]+[\s->]+/i', $nat_state, $matches, PREG_SET_ORDER) != 3) {
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continue;
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}
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$src = $matches[0][1];
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$dst = $matches[2][1];
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if (empty($src) || empty($dst) || in_array("{$src},{$dst}", $cleared_states)) {
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continue;
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}
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$cleared_states[] = "{$src},{$dst}";
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pfSense_kill_states($src, $dst);
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}
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pfSense_kill_states("0.0.0.0/0", "{$local_ip}/{$subnet_bits}");
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pfSense_kill_states("{$local_ip}/{$subnet_bits}");
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pfSense_kill_srcstates("{$local_ip}/{$subnet_bits}");
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}
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log_error("rc.kill_states: Removing states for interface {$interface}");
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mwexec("/sbin/pfctl -i {$interface} -Fs", true);
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}
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