#!/usr/local/bin/php-cgi -f
<?php
/*
 * rc.filter_synchronize
 *
 * part of pfSense (https://www.pfsense.org)
 * Copyright (c) 2005 Bill Marquette
 * Copyright (c) 2006 Peter Allgeyer
 * Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)
 * All rights reserved.
 *
 * originally part of m0n0wall (http://m0n0.ch/wall)
 * Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
 * 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.
 */

require_once("globals.inc");
require_once("config.inc");
require_once("functions.inc");
require_once("filter.inc");
require_once("shaper.inc");
require_once("xmlrpc.inc");
require_once("interfaces.inc");

/*
 *  backup_vip_config_section($section): returns as an xml file string of
 *                                   the configuration section
 */
function backup_vip_config_section() {
	global $config;

	if (!is_array($config['virtualip']['vip'])) {
		return;
	}
	$temp = array();
	$temp['vip'] = array();
	foreach ($config['virtualip']['vip'] as $section) {
		if (($section['mode'] == 'proxyarp' || $section['mode'] == 'ipalias') &&
		    (strpos($section['interface'], '_vip') === FALSE) &&
		    (strpos($section['interface'], 'lo0') === FALSE)) {
			continue;
		}
		if ($section['advskew'] <> "") {
			$section_val = intval($section['advskew']);
			$section_val=$section_val+100;
			if ($section_val > 254) {
				$section_val = 254;
			}
			$section['advskew'] = $section_val;
		}
		if ($section['advbase'] <> "") {
			$section_val = intval($section['advbase']);
			if ($section_val > 254) {
				$section_val = 254;
			}
			$section['advbase'] = $section_val;
		}
		$temp['vip'][] = $section;
	}
	return $temp;
}

function remove_special_characters($string) {
	$match_array = "";
	preg_match_all("/[a-zA-Z0-9\_\-]+/", $string, $match_array);
	$string = "";
	foreach ($match_array[0] as $ma) {
		if ($string <> "") {
			$string .= " ";
		}
		$string .= $ma;
	}
	return $string;
}

function carp_check_version($url, $username, $password, $port = 80, $method = 'pfsense.host_firmware_version') {
	global $config, $g;

	if (file_exists("{$g['varrun_path']}/booting") || platform_booting()) {
		return;
	}

	$params = array(
		XML_RPC_encode($password)
	);

	$numberofruns = 0;
	while ($numberofruns < 2) {
		$msg = new XML_RPC_Message($method, $params);
		$cli = new XML_RPC_Client('/xmlrpc.php', $url, $port);
		$cli->setCredentials($username, $password);
		if ($numberofruns > 0) {
			$cli->setDebug(1);
		}
		/* send our XMLRPC message and timeout after 240 seconds */
		$resp = $cli->send($msg, "240");
		if (!is_object($resp)) {
			$error = "A communications error occurred while attempting XMLRPC sync with username {$username} {$url}:{$port}.";
		} elseif ($resp->faultCode()) {
			$error = "An error code was received while attempting XMLRPC sync with username {$username} {$url}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
		} else {
			$parsed_response = XML_RPC_decode($resp->value());
			if (!is_array($parsed_response)) {
				if (trim($parsed_response) == "Authentication failed") {
					$error = "An authentication failure occurred while trying to access {$url}:{$port} ({$method}).";
					log_error($error);
					file_notice("sync_settings", $error, "Settings Sync", "");
					return false;
				}
			} else {
				if (!isset($parsed_response['config_version']) ||
				    ($parsed_response['config_version'] < $config['version']) ||
				    ($parsed_response['config_version'] > $config['version'])) {
					update_filter_reload_status("The other member is on a different configuration version of {$g['product_name']}. Sync will not be done to prevent problems!");
					log_error("The other member is on a different configuration version of {$g['product_name']}. Sync will not be done to prevent problems!");
					return false;
				} else {
					return true;
				}
			}
		}
		log_error($error);
		file_notice("sync_settings", $error, "Settings Sync", "");
		$numberofruns++;
	}

	return false;
}

function carp_sync_xml($url, $username, $password, $sections, $port = 80, $method = 'pfsense.restore_config_section') {
	global $config, $g;

	if (file_exists("{$g['varrun_path']}/booting") || platform_booting()) {
		return;
	}

	update_filter_reload_status("Syncing CARP data to {$url}");

	/* make a copy of config */
	$config_copy = $config;

	/* strip out nosync items */
	if (is_array($config_copy['nat']['outbound']['rule'])) {
		$rulescnt = count($config_copy['nat']['outbound']['rule']);
		for ($x = 0; $x < $rulescnt; $x++) {
			$config_copy['nat']['outbound']['rule'][$x]['descr'] = remove_special_characters($config_copy['nat']['outbound']['rule'][$x]['descr']);
			if (isset ($config_copy['nat']['outbound']['rule'][$x]['nosync'])) {
				unset ($config_copy['nat']['outbound']['rule'][$x]);
			}
		}
	}
	if (is_array($config_copy['nat']['rule'])) {
		$natcnt = count($config_copy['nat']['rule']);
		for ($x = 0; $x < $natcnt; $x++) {
			$config_copy['nat']['rule'][$x]['descr'] = remove_special_characters($config_copy['nat']['rule'][$x]['descr']);
			if (isset ($config_copy['nat']['rule'][$x]['nosync'])) {
				unset ($config_copy['nat']['rule'][$x]);
			}
		}
	}
	if (is_array($config_copy['filter']['rule'])) {
		$filtercnt = count($config_copy['filter']['rule']);
		for ($x = 0; $x < $filtercnt; $x++) {
			$config_copy['filter']['rule'][$x]['descr'] = remove_special_characters($config_copy['filter']['rule'][$x]['descr']);
			if (isset ($config_copy['filter']['rule'][$x]['nosync'])) {
				unset ($config_copy['filter']['rule'][$x]);
			}
		}
	}
	if (is_array($config_copy['aliases']['alias'])) {
		$aliascnt = count($config_copy['aliases']['alias']);
		for ($x = 0; $x < $aliascnt; $x++) {
			$config_copy['aliases']['alias'][$x]['descr'] = remove_special_characters($config_copy['aliases']['alias'][$x]['descr']);
			if (isset ($config_copy['aliases']['alias'][$x]['nosync'])) {
				unset ($config_copy['aliases']['alias'][$x]);
			}
		}
	}
	if (is_array($config_copy['dnsmasq']['hosts'])) {
		$dnscnt = count($config_copy['dnsmasq']['hosts']);
		for ($x = 0; $x < $dnscnt; $x++) {
			$config_copy['dnsmasq']['hosts'][$x]['descr'] = remove_special_characters($config_copy['dnsmasq']['hosts'][$x]['descr']);
			if (isset ($config_copy['dnsmasq']['hosts'][$x]['nosync'])) {
				unset ($config_copy['dnsmasq']['hosts'][$x]);
			}
		}
	}
	if (is_array($config_copy['ipsec']['tunnel'])) {
		$ipseccnt = count($config_copy['ipsec']['tunnel']);
		for ($x = 0; $x < $ipseccnt; $x++) {
			$config_copy['ipsec']['tunnel'][$x]['descr'] = remove_special_characters($config_copy['ipsec']['tunnel'][$x]['descr']);
			if (isset ($config_copy['ipsec']['tunnel'][$x]['nosync'])) {
				unset ($config_copy['ipsec']['tunnel'][$x]);
			}
		}
	}

	if (is_array($config_copy['dhcpd'])) {
		foreach ($config_copy['dhcpd'] as $dhcpif => $dhcpifconf) {
			if ($dhcpifconf['failover_peerip'] <> "") {
				$int = guess_interface_from_ip($dhcpifconf['failover_peerip']);
				$intip = find_interface_ip($int);
				$config_copy['dhcpd'][$dhcpif]['failover_peerip'] = $intip;
			}
		}
	}

	foreach ($sections as $section) {
	   /*  we can't use array_intersect_key()
		*  due to the vip 'special case'
		*/
		switch ($section) {
			case 'virtualip':
				$xml[$section] = backup_vip_config_section();
				break;
			case 'user':
				$xml['system'][$section] = $config_copy['system'][$section];
				$xml['system']['nextuid'] = $config_copy['system']['nextuid'];
				break;
			case 'group':
				$xml['system'][$section] = $config_copy['system'][$section];
				$xml['system']['nextgid'] = $config_copy['system']['nextgid'];
				break;
			case 'authserver':
				$xml['system'][$section] = $config_copy['system'][$section];
			default:
				$xml[$section] = $config_copy[$section];
		}
	}

	$params = array(
		XML_RPC_encode($password),
		XML_RPC_encode($xml)
	);

	$numberofruns = 0;
	while ($numberofruns < 2) {
		log_error("Beginning XMLRPC sync to {$url}:{$port}.");
		$msg = new XML_RPC_Message($method, $params);
		$cli = new XML_RPC_Client('/xmlrpc.php', $url, $port);
		$cli->setCredentials($username, $password);
		if ($numberofruns > 0) {
			$cli->setDebug(1);
		}
		/* send our XMLRPC message and timeout after 240 seconds */
		$resp = $cli->send($msg, "240");
		if (!is_object($resp)) {
			$error = "A communications error occurred while attempting XMLRPC sync with username {$username} {$url}:{$port}.";
			log_error($error);
			file_notice("sync_settings", $error, "Settings Sync", "");
		} elseif ($resp->faultCode()) {
			$error = "An error code was received while attempting XMLRPC sync with username {$username} {$url}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
			log_error($error);
			file_notice("sync_settings", $error, "Settings Sync", "");
		} else {
			$parsed_response =  XML_RPC_decode($resp->value());
			if (!is_array($parsed_response) && trim($parsed_response) == "Authentication failed") {
				$error = "An authentication failure occurred while trying to access {$url}:{$port} ($method).";
				log_error($error);
				file_notice("sync_settings", $error, "Settings Sync", "");
				return -1;
			} else {
				log_error("XMLRPC sync successfully completed with {$url}:{$port}.");
				update_filter_reload_status("XMLRPC sync successfully completed with {$url}:{$port}.");
			}
			$numberofruns = 3;
		}
		$numberofruns++;
	}
}

if (platform_booting()) {
	return;
}

if (is_array($config['hasync'])) {
	update_filter_reload_status("Building high availability sync information");
	$hasync = $config['hasync'];

	if (empty($hasync['synchronizetoip'])) {
		/* this gets hit on every filter sync on the secondary, a log here creates a lot of log spam and I never saw it actually log anything useful */
		return;
	}

	/*
	* XXX: The way we're finding the port right now is really suboptimal -
	*     we can't assume that the other machine is setup identically.
	*/
	if (!empty($config['system']['webgui']['protocol'])) {
		$synchronizetoip = $config['system']['webgui']['protocol'];
		$synchronizetoip .= "://";
	}

	/* if port is empty lets rely on the protocol selection */
	$port = $config['system']['webgui']['port'];
	if (empty($port)) {
		if ($config['system']['webgui']['protocol'] == "http") {
			$port = "80";
		} else {
			$port = "443";
		}
	}

	if (is_ipaddrv6($hasync['synchronizetoip'])) {
		$hasync['synchronizetoip'] = "[{$hasync['synchronizetoip']}]";
	}
	$synchronizetoip .= $hasync['synchronizetoip'];
	if ($hasync['synchronizerules'] != "") {
		if (!is_array($config['filter'])) {
			$config['filter'] = array();
		}
		$sections[] = 'filter';
	}
	if ($hasync['synchronizenat'] != "") {
		if (!is_array($config['nat'])) {
			$config['nat'] = array();
		}
		$sections[] = 'nat';
	}
	if ($hasync['synchronizealiases'] != "") {
		if (!is_array($config['aliases'])) {
			$config['aliases'] = array();
		}
		$sections[] = 'aliases';
	}
	if ($hasync['synchronizedhcpd'] != "" and is_array($config['dhcpd'])) {
		$sections[] = 'dhcpd';
	}
	if ($hasync['synchronizewol'] != "") {
		if (!is_array($config['wol'])) {
			$config['wol'] = array();
		}
		$sections[] = 'wol';
	}
	if ($hasync['synchronizetrafficshaper'] != "" and is_array($config['shaper'])) {
		$sections[] = 'shaper';
	}
	if ($hasync['synchronizetrafficshaperlimiter'] != "" and is_array($config['dnshaper'])) {
		$sections[] = 'dnshaper';
	}
	if ($hasync['synchronizestaticroutes'] != "") {
		if (!is_array($config['staticroutes'])) {
			$config['staticroutes'] = array();
		}
		if (!is_array($config['staticroutes']['route'])) {
			$config['staticroutes']['route'] = array();
		}
		$sections[] = 'staticroutes';
		if (!is_array($config['gateways'])) {
			$config['gateways'] = array();
		}
		$sections[] = 'gateways';
	}
	if ($hasync['synchronizevirtualip'] != "") {
		if (!is_array($config['virtualip'])) {
			$config['virtualip'] = array();
		}
		$sections[] = 'virtualip';
	}
	if ($hasync['synchronizelb'] != "") {
		if (!is_array($config['load_balancer'])) {
			$config['load_balancer'] = array();
		}
		$sections[] = 'load_balancer';
	}
	if ($hasync['synchronizeipsec'] != "") {
		if (!is_array($config['ipsec'])) {
			$config['ipsec'] = array();
		}
		$sections[] = 'ipsec';
	}
	if ($hasync['synchronizeopenvpn'] != "") {
		if (!is_array($config['openvpn'])) {
			$config['openvpn'] = array();
		}
		$sections[] = 'openvpn';
	}
	if ($hasync['synchronizecerts'] != "" || $hasync['synchronizeopenvpn'] != "") {
		if (!is_array($config['cert'])) {
			$config['cert'] = array();
		}
		$sections[] = 'cert';

		if (!is_array($config['ca'])) {
			$config['ca'] = array();
		}
		$sections[] = 'ca';

		if (!is_array($config['crl'])) {
			$config['crl'] = array();
		}
		$sections[] = 'crl';
	}
	if ($hasync['synchronizeusers'] != "") {
		$sections[] = 'user';
		$sections[] = 'group';
	}
	if ($hasync['synchronizeauthservers'] != "") {
		$sections[] = 'authserver';
	}
	if ($hasync['synchronizednsforwarder'] != "") {
		if (is_array($config['dnsmasq'])) {
			$sections[] = 'dnsmasq';
		}
		if (is_array($config['unbound'])) {
			$sections[] = 'unbound';
		}
	}
	if ($hasync['synchronizeschedules'] != "" || $hasync['synchronizerules'] != "") {
		if (!is_array($config['schedules'])) {
			$config['schedules'] = array();
		}
		$sections[] = 'schedules';
	}
	if ($hasync['synchronizecaptiveportal'] != "" and is_array($config['captiveportal'])) {
		$sections[] = 'captiveportal';
	}
	if ($hasync['synchronizecaptiveportal'] != "" and is_array($config['vouchers'])) {
		$sections[] = 'vouchers';
	}

	if (count($sections) <= 0) {
		log_error("Nothing has been configured to be synched. Skipping....");
		return;
	}

	if (empty($hasync['username'])) {
		$username = "admin";
	} else {
		$username = $hasync['username'];
	}

	if (!carp_check_version($synchronizetoip, $username, $hasync['password'], $port)) {
		return;
	}

	update_filter_reload_status("Signaling CARP reload signal...");
	if (carp_sync_xml($synchronizetoip, $username, $hasync['password'], $sections, $port) == -1) {
		return;
	}
	$cli = new XML_RPC_Client('/xmlrpc.php', $synchronizetoip, $port);
	$params = array(
	  XML_RPC_encode($hasync['password'])
	);

	$msg = new XML_RPC_Message('pfsense.filter_configure', $params);
	$cli->setCredentials($username, $hasync['password']);
	$resp = $cli->send($msg, "900");

	if (!is_object($resp)) {
		$error = "A communications error occurred while attempting Filter sync with username {$username} {$synchronizetoip}:{$port}.";
		log_error($error);
		file_notice("sync_settings", $error, "Settings Sync", "");
	} elseif ($resp->faultCode()) {
		$error = "An error code was received while attempting Filter sync with username {$username} {$synchronizetoip}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
		log_error($error);
		file_notice("sync_settings", $error, "Settings Sync", "");
	} else {
		log_error("Filter sync successfully completed with {$synchronizetoip}:{$port}.");
		$numberofruns = 3;
	}
}

?>