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#!/usr/local/bin/php-cgi -f
<?php
/*
* rc.kill_states
*
* Copyright (c) 2004-2015 Electric Sheep Fencing, LLC. 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.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* "This product includes software developed by the pfSense Project
* for use in the pfSense® software distribution. (http://www.pfsense.org/).
*
* 4. The names "pfSense" and "pfSense Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* coreteam@pfsense.org.
*
* 5. Products derived from this software may not be called "pfSense"
* nor may "pfSense" appear in their names without prior written
* permission of the Electric Sheep Fencing, LLC.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
*
* "This product includes software developed by the pfSense Project
* for use in the pfSense software distribution (http://www.pfsense.org/).
*
* THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 pfSense PROJECT OR
* ITS CONTRIBUTORS 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("interfaces.inc");
require_once("util.inc");
// Do not process while booting
if (platform_booting()) {
return;
}
/* Interface address to cleanup states */
$interface = str_replace("\n", "", $argv[1]);
/* IP address to cleanup states */
$local_ip = str_replace("\n", "", $argv[2]);
if (empty($interface) || !does_interface_exist($interface)) {
log_error("rc.kill_states: Invalid interface '{$interface}'");
return;
}
if (!empty($local_ip)) {
list($local_ip, $subnet_bits) = explode("/", $local_ip);
if (empty($subnet_bits)) {
$subnet_bits = "32";
}
if (!is_ipaddr($local_ip)) {
log_error("rc.kill_states: Invalid IP address '{$local_ip}'");
return;
}
}
if (isset($config['system']['gw_down_kill_states'])) {
if (!empty($local_ip)) {
log_error("rc.kill_states: Removing states for IP {$local_ip}/{$subnet_bits}");
$nat_states = exec_command("/sbin/pfctl -i {$interface} -ss | " .
"/usr/bin/egrep '\-> +{$local_ip}:[0-9]+ +\->'");
$cleared_states = array();
foreach (explode("\n", $nat_states) as $nat_state) {
if (preg_match_all('/([\d\.]+):[\d]+[\s->]+/i', $nat_state, $matches, PREG_SET_ORDER) != 3) {
continue;
}
$src = $matches[0][1];
$dst = $matches[2][1];
if (empty($src) || empty($dst) || in_array("{$src},{$dst}", $cleared_states)) {
continue;
}
$cleared_states[] = "{$src},{$dst}";
pfSense_kill_states($src, $dst);
}
pfSense_kill_states("0.0.0.0/0", "{$local_ip}/{$subnet_bits}");
pfSense_kill_states("{$local_ip}/{$subnet_bits}");
pfSense_kill_srcstates("{$local_ip}/{$subnet_bits}");
}
log_error("rc.kill_states: Removing states for interface {$interface}");
mwexec("/sbin/pfctl -i {$interface} -Fs", true);
}
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