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#!/usr/local/bin/php-cgi -f
<?php
/*
* rc.kill_states
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* 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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