<?php
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/*
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Copyright (c) 2009, Till Brehm, projektfarm Gmbh
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* 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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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of ISPConfig nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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class bind_plugin {
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var $plugin_name = 'bind_plugin';
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var $class_name = 'bind_plugin';
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var $action = 'update';
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//* This function is called during ispconfig installation to determine
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// if a symlink shall be created for this plugin.
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function onInstall() {
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global $conf;
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if(isset($conf['bind']['installed']) && $conf['bind']['installed'] == true && @is_link('/usr/local/ispconfig/server/mods-enabled/dns_module.inc.php')) {
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return true;
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} else {
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return false;
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}
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}
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/*
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This function is called when the plugin is loaded
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*/
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function onLoad() {
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global $app;
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/*
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Register for the events
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*/
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//* SOA
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$app->plugins->registerEvent('dns_soa_insert', $this->plugin_name, 'soa_insert');
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$app->plugins->registerEvent('dns_soa_update', $this->plugin_name, 'soa_update');
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$app->plugins->registerEvent('dns_soa_delete', $this->plugin_name, 'soa_delete');
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//* SLAVE
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$app->plugins->registerEvent('dns_slave_insert', $this->plugin_name, 'slave_insert');
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$app->plugins->registerEvent('dns_slave_update', $this->plugin_name, 'slave_update');
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$app->plugins->registerEvent('dns_slave_delete', $this->plugin_name, 'slave_delete');
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//* RR
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$app->plugins->registerEvent('dns_rr_insert', $this->plugin_name, 'rr_insert');
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$app->plugins->registerEvent('dns_rr_update', $this->plugin_name, 'rr_update');
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$app->plugins->registerEvent('dns_rr_delete', $this->plugin_name, 'rr_delete');
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}
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function soa_insert($event_name, $data) {
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global $app, $conf;
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$this->action = 'insert';
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$this->soa_update($event_name, $data);
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}
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function soa_update($event_name, $data) {
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global $app, $conf;
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//* Load libraries
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$app->uses("getconf,tpl");
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//* load the server configuration options
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$dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
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//* Write the domain file
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if(!empty($data['new']['id'])) {
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$tpl = new tpl();
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$tpl->newTemplate("bind_pri.domain.master");
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$zone = $data['new'];
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$tpl->setVar($zone);
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$records = $app->db->queryAllRecords("SELECT * FROM dns_rr WHERE zone = ".$zone['id']." AND active = 'Y'");
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if(is_array($records) && !empty($records)){
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for($i=0;$i<sizeof($records);$i++){
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if($records[$i]['ttl'] == 0) $records[$i]['ttl'] = '';
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//* Split TXT records, if nescessary
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if($records[$i]['type'] == 'TXT' && strlen($records[$i]['data']) > 255) {
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$records[$i]['data'] = implode('" "',str_split( $records[$i]['data'], 255));
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}
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}
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}
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$tpl->setLoop('zones', $records);
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//TODO : change this when distribution information has been integrated into server record
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if (file_exists('/etc/gentoo-release')) {
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$filename = escapeshellcmd($dns_config['bind_zonefiles_dir'].'/pri.'.str_replace("/", "_", substr($zone['origin'], 0, -1)));
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}
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else {
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$filename = escapeshellcmd($dns_config['bind_zonefiles_dir'].'/pri.'.str_replace("/", "_", substr($zone['origin'], 0, -1)));
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}
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file_put_contents($filename, $tpl->grab());
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chown($filename, escapeshellcmd($dns_config['bind_user']));
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chgrp($filename, escapeshellcmd($dns_config['bind_group']));
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//* Check the zonefile
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if(is_file($filename.'.err')) unlink($filename.'.err');
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exec('named-checkzone '.escapeshellarg($zone['origin']).' '.escapeshellarg($filename), $out, $return_status);
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if($return_status === 0) {
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$app->log("Writing BIND domain file: ".$filename, LOGLEVEL_DEBUG);
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} else {
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$app->log("Writing BIND domain file failed: ".$filename." ".implode(' ', $out), LOGLEVEL_WARN);
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rename($filename, $filename.'.err');
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}
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unset($tpl);
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unset($records);
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unset($records_out);
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unset($zone);
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}
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//* rebuild the named.conf file if the origin has changed or when the origin is inserted.
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//if($this->action == 'insert' || $data['old']['origin'] != $data['new']['origin']) {
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$this->write_named_conf($data, $dns_config);
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//}
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//* Delete old domain file, if domain name has been changed
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if($data['old']['origin'] != $data['new']['origin']) {
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//TODO : change this when distribution information has been integrated into server record
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if (file_exists('/etc/gentoo-release')) {
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$filename = $dns_config['bind_zonefiles_dir'].'/pri.'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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else {
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$filename = $dns_config['bind_zonefiles_dir'].'/pri.'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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if(is_file($filename)) unlink($filename);
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if(is_file($filename.'.err')) unlink($filename.'.err');
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}
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//* Restart bind nameserver if update_acl is not empty, otherwise reload it
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if($data['new']['update_acl'] != '') {
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$app->services->restartServiceDelayed('bind', 'restart');
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} else {
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$app->services->restartServiceDelayed('bind', 'reload');
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}
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}
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function soa_delete($event_name, $data) {
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global $app, $conf;
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//* load the server configuration options
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$app->uses("getconf,tpl");
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$dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
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//* rebuild the named.conf file
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$this->write_named_conf($data, $dns_config);
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//* Delete the domain file
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//TODO : change this when distribution information has been integrated into server record
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if (file_exists('/etc/gentoo-release')) {
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$zone_file_name = $dns_config['bind_zonefiles_dir'].'/pri/'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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else {
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$zone_file_name = $dns_config['bind_zonefiles_dir'].'/pri.'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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if(is_file($zone_file_name)) unlink($zone_file_name);
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if(is_file($zone_file_name.'.err')) unlink($zone_file_name.'.err');
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$app->log("Deleting BIND domain file: ".$zone_file_name, LOGLEVEL_DEBUG);
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//* Reload bind nameserver
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$app->services->restartServiceDelayed('bind', 'reload');
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}
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function slave_insert($event_name, $data) {
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global $app, $conf;
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$this->action = 'insert';
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$this->slave_update($event_name, $data);
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}
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function slave_update($event_name, $data) {
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global $app, $conf;
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//* Load libraries
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$app->uses("getconf,tpl");
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//* load the server configuration options
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$dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
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//* rebuild the named.conf file if the origin has changed or when the origin is inserted.
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//if($this->action == 'insert' || $data['old']['origin'] != $data['new']['origin']) {
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$this->write_named_conf($data, $dns_config);
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//}
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//* Delete old domain file, if domain name has been changed
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if($data['old']['origin'] != $data['new']['origin']) {
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//TODO : change this when distribution information has been integrated into server record
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if (file_exists('/etc/gentoo-release')) {
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$filename = $dns_config['bind_zonefiles_dir'].'/sec/'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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else {
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$filename = $dns_config['bind_zonefiles_dir'].'/slave/sec.'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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if(is_file($filename)) unset($filename);
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}
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//* Ensure that the named slave directory is writable by the named user
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if (file_exists('/etc/gentoo-release')) {
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$slave_record_dir = $dns_config['bind_zonefiles_dir'].'/sec';
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} else {
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$slave_record_dir = $dns_config['bind_zonefiles_dir'].'/slave';
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}
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if(!@is_dir($slave_record_dir)) mkdir($slave_record_dir, 0770);
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chown($slave_record_dir, $dns_config['bind_user']);
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chgrp($slave_record_dir, $dns_config['bind_group']);
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//* Reload bind nameserver
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$app->services->restartServiceDelayed('bind', 'reload');
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}
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function slave_delete($event_name, $data) {
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global $app, $conf;
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//* load the server configuration options
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$app->uses("getconf,tpl");
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$dns_config = $app->getconf->get_server_config($conf["server_id"], 'dns');
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//* rebuild the named.conf file
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$this->write_named_conf($data, $dns_config);
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//* Delete the domain file
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//TODO : change this when distribution information has been integrated into server record
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if (file_exists('/etc/gentoo-release')) {
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$zone_file_name = $dns_config['bind_zonefiles_dir'].'/sec/'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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else {
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$zone_file_name = $dns_config['bind_zonefiles_dir'].'/slave/sec.'.str_replace("/", "_", substr($data['old']['origin'], 0, -1));
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}
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if(is_file($zone_file_name)) unlink($zone_file_name);
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$app->log("Deleting BIND domain file for secondary zone: ".$zone_file_name, LOGLEVEL_DEBUG);
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//* Reload bind nameserver
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$app->services->restartServiceDelayed('bind', 'reload');
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}
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function rr_insert($event_name, $data) {
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global $app, $conf;
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//* Get the data of the soa and call soa_update
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$tmp = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = ".$data['new']['zone']);
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$data["new"] = $tmp;
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$data["old"] = $tmp;
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$this->action = 'update';
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$this->soa_update($event_name, $data);
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}
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function rr_update($event_name, $data) {
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global $app, $conf;
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//* Get the data of the soa and call soa_update
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$tmp = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = ".$data['new']['zone']);
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$data["new"] = $tmp;
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$data["old"] = $tmp;
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$this->action = 'update';
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$this->soa_update($event_name, $data);
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}
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function rr_delete($event_name, $data) {
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global $app, $conf;
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//* Get the data of the soa and call soa_update
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$tmp = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = ".intval($data['old']['zone']));
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$data["new"] = $tmp;
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$data["old"] = $tmp;
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$this->action = 'update';
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$this->soa_update($event_name, $data);
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}
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//##################################################################
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function write_named_conf($data, $dns_config) {
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global $app, $conf;
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//* Only write the master file for the current server
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$tmps = $app->db->queryAllRecords("SELECT origin, xfer, also_notify, update_acl FROM dns_soa WHERE active = 'Y' AND server_id=".$conf["server_id"]);
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$zones = array();
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//* Check if the current zone that triggered this function has at least one NS record
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/* Has been replaced by a better zone check
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$rec_num = $app->db->queryOneRecord("SELECT count(id) as ns FROM dns_rr WHERE type = 'NS' AND zone = ".intval($data['new']['id'])." AND active = 'Y'");
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if($rec_num['ns'] == 0) {
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$exclude_zone = $data['new']['origin'];
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} else {
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$exclude_zone = '';
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}
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*/
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//TODO : change this when distribution information has been integrated into server record
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if (file_exists('/etc/gentoo-release')) {
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$pri_zonefiles_path = $dns_config['bind_zonefiles_dir'].'/pri/';
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$sec_zonefiles_path = $dns_config['bind_zonefiles_dir'].'/sec/';
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}
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else {
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$pri_zonefiles_path = $dns_config['bind_zonefiles_dir'].'/pri.';
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$sec_zonefiles_path = $dns_config['bind_zonefiles_dir'].'/slave/sec.';
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}
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//* Loop trough zones
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foreach($tmps as $tmp) {
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$zone_file = $pri_zonefiles_path.str_replace("/", "_", substr($tmp['origin'], 0, -1));
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$options = '';
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if(trim($tmp['xfer']) != '') {
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$options .= " allow-transfer {".str_replace(',', ';', $tmp['xfer']).";};\n";
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} else {
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$options .= " allow-transfer {none;};\n";
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}
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if(trim($tmp['also_notify']) != '') $options .= ' also-notify {'.str_replace(',', ';', $tmp['also_notify']).";};\n";
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if(trim($tmp['update_acl']) != '') $options .= " allow-update {".str_replace(',', ';', $tmp['update_acl']).";};\n";
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if(file_exists($zone_file)) {
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$zones[] = array( 'zone' => substr($tmp['origin'], 0, -1),
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'zonefile_path' => $zone_file,
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'options' => $options
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);
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}
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}
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$tpl = new tpl();
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$tpl->newTemplate("bind_named.conf.local.master");
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$tpl->setLoop('zones', $zones);
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//* And loop through the secondary zones, but only for the current server
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$tmps_sec = $app->db->queryAllRecords("SELECT origin, xfer, ns FROM dns_slave WHERE active = 'Y' AND server_id=".$conf["server_id"]);
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$zones_sec = array();
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foreach($tmps_sec as $tmp) {
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$options = " masters {".$tmp['ns'].";};\n";
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if(trim($tmp['xfer']) != '') {
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$options .= " allow-transfer {".str_replace(',', ';', $tmp['xfer']).";};\n";
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} else {
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$options .= " allow-transfer {none;};\n";
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}
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$zones_sec[] = array( 'zone' => substr($tmp['origin'], 0, -1),
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'zonefile_path' => $sec_zonefiles_path.str_replace("/", "_", substr($tmp['origin'], 0, -1)),
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'options' => $options
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);
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// $filename = escapeshellcmd($dns_config['bind_zonefiles_dir'].'/slave/sec.'.substr($tmp['origin'],0,-1));
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// $app->log("Writing BIND domain file: ".$filename,LOGLEVEL_DEBUG);
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}
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$tpl_sec = new tpl();
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$tpl_sec->newTemplate("bind_named.conf.local.slave");
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$tpl_sec->setLoop('zones', $zones_sec);
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file_put_contents($dns_config['named_conf_local_path'], $tpl->grab()."\n".$tpl_sec->grab());
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$app->log("Writing BIND named.conf.local file: ".$dns_config['named_conf_local_path'], LOGLEVEL_DEBUG);
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unset($tpl_sec);
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unset($zones_sec);
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unset($tmps_sec);
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unset($tpl);
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unset($zones);
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unset($tmps);
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}
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} // end class
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?>
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