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-rwxr-xr-xsrc/etc/rc.kill_states94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/etc/rc.kill_states b/src/etc/rc.kill_states
new file mode 100755
index 0000000..715c860
--- /dev/null
+++ b/src/etc/rc.kill_states
@@ -0,0 +1,94 @@
+#!/usr/local/bin/php-cgi -f
+<?php
+/*
+ rc.kill_states
+ Copyright (C) 2013 Renato Botelho (garga@pfsense.org)
+ part of pfSense (https://www.pfsense.org)
+
+ 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("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']['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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