560 lines
18 KiB
PHP
560 lines
18 KiB
PHP
<?php
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/* $Id$ */
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/*
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vslb.inc
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Copyright (C) 2005-2008 Bill Marquette
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All rights reserved.
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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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/*
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pfSense_BUILDER_BINARIES: /usr/local/sbin/relayd
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pfSense_MODULE: routing
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*/
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/* include all configuration functions */
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class Monitor {
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private $conf = array();
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function __construct($config) {
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$this->conf = $config;
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}
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public function p() {
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return "check {$this->get('proto')}";
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}
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private function get($var) {
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return isset($this->$var) ? $this->$var : "";
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}
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protected function config($element) {
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return isset($this->conf[$element]) ? $this->conf[$element] : "";
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}
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}
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class TCPMonitor extends Monitor {
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protected $proto = 'tcp';
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}
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class SSLMonitor extends Monitor {
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protected $proto = 'ssl';
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}
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class ICMPMonitor extends Monitor {
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protected $proto = 'icmp';
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}
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class HTTPMonitor extends Monitor {
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protected $proto = 'http';
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function __construct($config) {
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parent::__construct($config);
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}
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public function p() {
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$method = ($this->code() != "") ? $this->code() : $this->digest();
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return "check {$this->proto} {$this->path()} {$this->host()} {$method}";
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}
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private function path() {
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return $this->config('path') != "" ? "'{$this->config('path')}'" : "";
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}
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private function host() {
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return $this->config('host') != "" ? "host {$this->config('host')}" : "";
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}
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private function code() {
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return $this->config('code') != "" ? "code {$this->config('code')}" : "";
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}
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private function digest() {
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return $this->config('digest') != "" ? "digest {$this->config('digest')}" : "";
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}
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}
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class HTTPSMonitor extends HTTPMonitor {
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protected $proto = 'https';
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}
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class SendMonitor extends Monitor {
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private $proto = 'send';
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function __construct($config) {
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parent::__construct($config);
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}
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public function p() {
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return "check {$this->proto} {$this->data()} expect {$this->pattern()} {$this->ssl()}";
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}
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private function data() {
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return $this->config('send') != "" ? "\"{$this->config('send')}\"" : "\"\"";
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}
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private function pattern() {
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return $this->config('expect') != "" ? "\"{$this->config('expect')}\"" : "\"\"";
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}
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private function ssl() {
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return $this->config('ssl') == true ? "ssl" : "";
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}
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}
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function echo_lbaction($action) {
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global $config;
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// Index actions by name
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$actions_a = array();
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for ($i=0; isset($config['load_balancer']['lbaction'][$i]); $i++)
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$actions_a[$config['load_balancer']['lbaction'][$i]['name']] = $config['load_balancer']['lbaction'][$i];
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$ret = "";
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$ret .= "{$actions_a[$action]['direction']} {$actions_a[$action]['type']} {$actions_a[$action]['action']}";
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switch($actions_a[$action]['action']) {
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case 'append':
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$ret .= " \"{$actions_a[$action]['options']['value']}\" to \"{$actions_a[$action]['options']['akey']}\"";
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break;
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case 'change':
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$ret .= " \"{$actions_a[$action]['options']['akey']}\" to \"{$actions_a[$action]['options']['value']}\"";
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break;
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case 'expect':
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$ret .= " \"{$actions_a[$action]['options']['value']}\" from \"{$actions_a[$action]['options']['akey']}\"";
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break;
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case 'filter':
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$ret .= " \"{$actions_a[$action]['options']['value']}\" from \"{$actions_a[$action]['options']['akey']}\"";
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break;
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case 'hash':
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$ret .= " \"{$actions_a[$action]['options']['akey']}\"";
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break;
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case 'log':
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$ret .= " \"{$actions_a[$action]['options']['akey']}\"";
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break;
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}
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return $ret;
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}
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function relayd_configure($kill_first=false) {
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global $config, $g;
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// have to do this until every call to filter.inc is
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// require_once() instead of require().
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if (!function_exists('filter_expand_alias_array')) {
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require_once("filter.inc");
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}
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$vs_a = $config['load_balancer']['virtual_server'];
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$pool_a = $config['load_balancer']['lbpool'];
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$protocol_a = $config['load_balancer']['lbprotocol'];
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$setting = $config['load_balancer']['setting'];
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$check_a = array();
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foreach ((array)$config['load_balancer']['monitor_type'] as $type) {
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switch($type['type']) {
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case 'icmp':
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$mon = new ICMPMonitor($type['options']);
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break;
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case 'tcp':
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$mon = new TCPMonitor($type['options']);
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break;
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case 'http':
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$mon = new HTTPMonitor($type['options']);
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break;
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case 'https':
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$mon = new HTTPSMonitor($type['options']);
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break;
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case 'send':
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$mon = new SendMonitor($type['options']);
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break;
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}
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if($mon) {
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$check_a[$type['name']] = $mon->p();
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}
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}
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$fd = fopen("{$g['varetc_path']}/relayd.conf", "w");
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$conf .= "log updates \n";
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/* Global timeout, interval and prefork settings
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if not specified by the user:
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- use a 1000 ms timeout value as in pfsense 2.0.1 and above
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- leave interval and prefork empty, relayd will use its default values */
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if (isset($setting['timeout']) && !empty($setting['timeout'])) {
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$conf .= "timeout ".$setting['timeout']." \n";
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} else {
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$conf .= "timeout 1000 \n";
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}
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if (isset($setting['interval']) && !empty($setting['interval'])) {
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$conf .= "interval ".$setting['interval']." \n";
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}
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if (isset($setting['prefork']) && !empty($setting['prefork'])) {
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$conf .= "prefork ".$setting['prefork']." \n";
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}
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/* reindex pools by name as we loop through the pools array */
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$pools = array();
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/* Virtual server pools */
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if(is_array($pool_a)) {
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for ($i = 0; isset($pool_a[$i]); $i++) {
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if(is_array($pool_a[$i]['servers'])) {
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if (!empty($pool_a[$i]['retry'])) {
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$retrytext = " retry {$pool_a[$i]['retry']}";
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} else {
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$retrytext = "";
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}
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$conf .= "table <{$pool_a[$i]['name']}> {\n";
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foreach ($pool_a[$i]['servers'] as $server) {
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if (is_subnetv4($server)) {
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foreach (subnetv4_expand($server) as $ip) {
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$conf .= "\t{$ip}{$retrytext}\n";
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}
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}
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else {
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$conf .= "\t{$server}{$retrytext}\n";
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}
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}
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$conf .= "}\n";
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/* Index by name for easier fetching when we loop through the virtual servers */
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$pools[$pool_a[$i]['name']] = $pool_a[$i];
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}
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}
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}
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// if(is_array($protocol_a)) {
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// for ($i = 0; isset($protocol_a[$i]); $i++) {
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// $proto = "{$protocol_a[$i]['type']} protocol \"{$protocol_a[$i]['name']}\" {\n";
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// if(is_array($protocol_a[$i]['lbaction'])) {
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// if($protocol_a[$i]['lbaction'][0] == "") {
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// continue;
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// }
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// for ($a = 0; isset($protocol_a[$i]['lbaction'][$a]); $a++) {
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// $proto .= " " . echo_lbaction($protocol_a[$i]['lbaction'][$a]) . "\n";
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// }
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// }
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// $proto .= "}\n";
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// $conf .= $proto;
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// }
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// }
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$conf .= "dns protocol \"dnsproto\" {\n";
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$conf .= "\t" . "tcp { nodelay, sack, socket buffer 1024, backlog 1000 }\n";
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$conf .= "}\n";
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if(is_array($vs_a)) {
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for ($i = 0; isset($vs_a[$i]); $i++) {
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$append_port_to_name = false;
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if (is_alias($pools[$vs_a[$i]['poolname']]['port'])) {
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$dest_port_array = filter_expand_alias_array($pools[$vs_a[$i]['poolname']]['port']);
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$append_port_to_name = true;
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}
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else {
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$dest_port_array = array($pools[$vs_a[$i]['poolname']]['port']);
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}
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if (is_alias($vs_a[$i]['port'])) {
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$src_port_array = filter_expand_alias_array($vs_a[$i]['port']);
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$append_port_to_name = true;
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}
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else if ($vs_a[$i]['port']) {
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$src_port_array = array($vs_a[$i]['port']);
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}
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else {
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$src_port_array = $dest_port_array;
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}
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$append_ip_to_name = false;
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if (is_alias($vs_a[$i]['ipaddr'])) {
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$ip_list = array();
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foreach (filter_expand_alias_array($vs_a[$i]['ipaddr']) as $item) {
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log_error("item is $item");
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if (is_subnetv4($item)) {
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$ip_list = array_merge($ip_list, subnetv4_expand($item));
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}
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else {
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$ip_list[] = $item;
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}
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}
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$append_ip_to_name = true;
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}
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else if (is_subnetv4($vs_a[$i]['ipaddr'])) {
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$ip_list = subnetv4_expand($vs_a[$i]['ipaddr']);
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$append_ip_to_name = true;
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}
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else {
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$ip_list = array($vs_a[$i]['ipaddr']);
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}
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for ($j = 0; $j < count($ip_list); $j += 1) {
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$ip = $ip_list[$j];
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for ($k = 0; $k < count($src_port_array) && $k < count($dest_port_array); $k += 1) {
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$src_port = $src_port_array[$k];
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$dest_port = $dest_port_array[$k];
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$name = $vs_a[$i]['name'];
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if ($append_ip_to_name) {
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$name .= "_" . $j;
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}
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if ($append_port_to_name) {
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$name .= "_" . $src_port;
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}
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if (($vs_a[$i]['mode'] == 'relay') || ($vs_a[$i]['relay_protocol'] == 'dns')) {
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$conf .= "relay \"{$name}\" {\n";
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$conf .= " listen on {$ip} port {$src_port}\n";
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if ($vs_a[$i]['relay_protocol'] == "dns") {
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$conf .= " protocol \"dnsproto\"\n";
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} else {
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$conf .= " protocol \"{$vs_a[$i]['relay_protocol']}\"\n";
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}
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$lbmode = "";
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if ( $pools[$vs_a[$i]['poolname']]['mode'] == "loadbalance" ) {
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$lbmode = "mode loadbalance";
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}
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$conf .= " forward to <{$vs_a[$i]['poolname']}> port {$dest_port} {$lbmode} {$check_a[$pools[$vs_a[$i]['poolname']]['monitor']]} \n";
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if (isset($vs_a[$i]['sitedown']) && strlen($vs_a[$i]['sitedown']) > 0 && ($vs_a[$i]['relay_protocol'] != 'dns'))
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$conf .= " forward to <{$vs_a[$i]['sitedown']}> port {$dest_port} {$lbmode} {$check_a[$pools[$vs_a[$i]['poolname']]['monitor']]} \n";
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$conf .= "}\n";
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} else {
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$conf .= "redirect \"{$name}\" {\n";
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$conf .= " listen on {$ip} port {$src_port}\n";
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$conf .= " forward to <{$vs_a[$i]['poolname']}> port {$dest_port} {$check_a[$pools[$vs_a[$i]['poolname']]['monitor']]} \n";
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if (isset($config['system']['lb_use_sticky']))
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$conf .= " sticky-address\n";
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/* sitedown MUST use the same port as the primary pool - sucks, but it's a relayd thing */
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if (isset($vs_a[$i]['sitedown']) && strlen($vs_a[$i]['sitedown']) > 0 && ($vs_a[$i]['relay_protocol'] != 'dns'))
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$conf .= " forward to <{$vs_a[$i]['sitedown']}> port {$dest_port} {$check_a[$pools[$vs_a[$i]['sitedown']]['monitor']]} \n";
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$conf .= "}\n";
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}
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}
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}
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}
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}
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fwrite($fd, $conf);
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fclose($fd);
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if (is_process_running('relayd')) {
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if (! empty($vs_a)) {
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if ($kill_first) {
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mwexec('pkill relayd');
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/* Remove all active relayd anchors now that relayd is no longer running. */
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cleanup_lb_anchor("*");
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mwexec("/usr/local/sbin/relayd -f {$g['varetc_path']}/relayd.conf");
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} else {
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// it's running and there is a config, just reload
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mwexec("/usr/local/sbin/relayctl reload");
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}
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} else {
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/*
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* XXX: Something breaks our control connection with relayd
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* and makes 'relayctl stop' not work
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* rule reloads are the current suspect
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* mwexec('/usr/local/sbin/relayctl stop');
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* returns "command failed"
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*/
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mwexec('pkill relayd');
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/* Remove all active relayd anchors now that relayd is no longer running. */
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cleanup_lb_anchor("*");
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}
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} else {
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if (! empty($vs_a)) {
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// not running and there is a config, start it
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/* Remove all active relayd anchors so it can start fresh. */
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cleanup_lb_anchor("*");
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mwexec("/usr/local/sbin/relayd -f {$g['varetc_path']}/relayd.conf");
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}
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}
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}
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function get_lb_redirects() {
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/*
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# relayctl show summary
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Id Type Name Avlblty Status
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1 redirect testvs2 active
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5 table test2:80 active (3 hosts up)
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11 host 192.168.1.2 91.55% up
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10 host 192.168.1.3 100.00% up
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9 host 192.168.1.4 88.73% up
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3 table test:80 active (1 hosts up)
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7 host 192.168.1.2 66.20% down
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6 host 192.168.1.3 97.18% up
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0 redirect testvs active
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3 table test:80 active (1 hosts up)
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7 host 192.168.1.2 66.20% down
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6 host 192.168.1.3 97.18% up
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4 table testvs-sitedown:80 active (1 hosts up)
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8 host 192.168.1.4 84.51% up
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# relayctl show redirects
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Id Type Name Avlblty Status
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1 redirect testvs2 active
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0 redirect testvs active
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# relayctl show redirects
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Id Type Name Avlblty Status
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1 redirect testvs2 active
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total: 2 sessions
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last: 2/60s 2/h 2/d sessions
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average: 1/60s 0/h 0/d sessions
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0 redirect testvs active
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*/
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$rdr_a = array();
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exec('/usr/local/sbin/relayctl show redirects 2>&1', $rdr_a);
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$relay_a = array();
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exec('/usr/local/sbin/relayctl show relays 2>&1', $relay_a);
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$vs = array();
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$cur_entry = "";
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for ($i = 0; isset($rdr_a[$i]); $i++) {
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$line = $rdr_a[$i];
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if (preg_match("/^[0-9]+/", $line)) {
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$regs = array();
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if($x = preg_match("/^[0-9]+\s+redirect\s+([^\s]+)\s+([^\s]+)/", $line, $regs)) {
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$cur_entry = trim($regs[1]);
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$vs[trim($regs[1])] = array();
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$vs[trim($regs[1])]['status'] = trim($regs[2]);
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}
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} elseif (($x = preg_match("/^\s+total:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
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$vs[$cur_entry]['total'] = trim($regs[1]);
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} elseif (($x = preg_match("/^\s+last:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
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$vs[$cur_entry]['last'] = trim($regs[1]);
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} elseif (($x = preg_match("/^\s+average:(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
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$vs[$cur_entry]['average'] = trim($regs[1]);
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}
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}
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$cur_entry = "";
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for ($i = 0; isset($relay_a[$i]); $i++) {
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$line = $relay_a[$i];
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if (preg_match("/^[0-9]+/", $line)) {
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$regs = array();
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if($x = preg_match("/^[0-9]+\s+relay\s+([^\s]+)\s+([^\s]+)/", $line, $regs)) {
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$cur_entry = trim($regs[1]);
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$vs[trim($regs[1])] = array();
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$vs[trim($regs[1])]['status'] = trim($regs[2]);
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}
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} elseif (($x = preg_match("/^\s+total:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
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$vs[$cur_entry]['total'] = trim($regs[1]);
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} elseif (($x = preg_match("/^\s+last:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
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$vs[$cur_entry]['last'] = trim($regs[1]);
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} elseif (($x = preg_match("/^\s+average:(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
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$vs[$cur_entry]['average'] = trim($regs[1]);
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}
|
|
}
|
|
return $vs;
|
|
}
|
|
|
|
function get_lb_summary() {
|
|
$relayctl = array();
|
|
exec('/usr/local/sbin/relayctl show summary 2>&1', $relayctl);
|
|
$relay_hosts=Array();
|
|
foreach( (array) $relayctl as $line) {
|
|
$t = explode("\t", $line);
|
|
switch (trim($t[1])) {
|
|
case "table":
|
|
$curpool=trim($t[2]);
|
|
break;
|
|
case "host":
|
|
$curhost=trim($t[2]);
|
|
$relay_hosts[$curpool][$curhost]['avail']=trim($t[3]);
|
|
$relay_hosts[$curpool][$curhost]['state']=trim($t[4]);
|
|
break;
|
|
}
|
|
}
|
|
return $relay_hosts;
|
|
}
|
|
|
|
/* Get a list of all relayd virtual server anchors */
|
|
function get_lb_anchors() {
|
|
/* NOTE: These names come back prepended with "relayd/" e.g. "relayd/MyVSName" */
|
|
return explode("\n", trim(`/sbin/pfctl -sA -a relayd | /usr/bin/awk '{print $1;}'`));
|
|
}
|
|
|
|
/* Remove NAT rules from a relayd anchor that is no longer in use.
|
|
$anchorname can either be * to clear all anchors or a specific anchor name.*/
|
|
function cleanup_lb_anchor($anchorname = "*") {
|
|
$lbanchors = get_lb_anchors();
|
|
foreach ($lbanchors as $lba) {
|
|
if (($anchorname == "*") || ($lba == "relayd/{$anchorname}")) {
|
|
/* Flush both the NAT and the Table for the anchor, so it will be completely removed by pf. */
|
|
mwexec("/sbin/pfctl -a " . escapeshellarg($lba) . " -F nat");
|
|
mwexec("/sbin/pfctl -a " . escapeshellarg($lba) . " -F Tables");
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Mark an anchor for later cleanup. This will allow us to remove an old VS name */
|
|
function cleanup_lb_mark_anchor($name) {
|
|
global $g;
|
|
/* Nothing to do! */
|
|
if (empty($name))
|
|
return;
|
|
$filename = "{$g['tmp_path']}/relayd_anchors_remove";
|
|
$cleanup_anchors = array();
|
|
/* Read in any currently unapplied name changes */
|
|
if (file_exists($filename))
|
|
$cleanup_anchors = explode("\n", file_get_contents($filename));
|
|
/* Only add the anchor to the list if it's not already there. */
|
|
if (!in_array($name, $cleanup_anchors))
|
|
$cleanup_anchors[] = $name;
|
|
file_put_contents($filename, implode("\n", $cleanup_anchors));
|
|
}
|
|
|
|
/* Cleanup relayd anchors that have been marked for cleanup. */
|
|
function cleanup_lb_marked() {
|
|
global $g, $config;
|
|
$filename = "{$g['tmp_path']}/relayd_anchors_remove";
|
|
$cleanup_anchors = array();
|
|
/* Nothing to do! */
|
|
if (!file_exists($filename)) {
|
|
return;
|
|
} else {
|
|
$cleanup_anchors = explode("\n", file_get_contents($filename));
|
|
/* Nothing to do! */
|
|
if (empty($cleanup_anchors))
|
|
return;
|
|
}
|
|
|
|
/* Load current names so we can make sure we don't remove an anchor that is still in use. */
|
|
$vs_a = $config['load_balancer']['virtual_server'];
|
|
$active_vsnames = array();
|
|
if(is_array($vs_a)) {
|
|
foreach ($vs_a as $vs) {
|
|
$active_vsnames[] = $vs['name'];
|
|
}
|
|
}
|
|
|
|
foreach ($cleanup_anchors as $anchor) {
|
|
/* Only cleanup an anchor if it is not still active. */
|
|
if (!in_array($anchor, $active_vsnames)) {
|
|
cleanup_lb_anchor($anchor);
|
|
}
|
|
}
|
|
unlink_if_exists($filename);
|
|
}
|
|
|
|
?>
|