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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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Copyright (C) 2013 Renato Botelho (garga@pfsense.org)
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part of pfSense (https://www.pfsense.org)
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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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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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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, 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 OF THE
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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']['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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