<?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 dns_module {
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var $module_name = 'dns_module';
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var $class_name = 'dns_module';
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var $actions_available = array( 'dns_soa_insert',
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'dns_soa_update',
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'dns_soa_delete',
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'dns_slave_insert',
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'dns_slave_update',
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'dns_slave_delete',
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'dns_rr_insert',
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'dns_rr_update',
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'dns_rr_delete');
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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 $conf;
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if($conf['services']['dns'] == true) {
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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 module is loaded
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*/
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function onLoad() {
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global $app;
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/*
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Annonce the actions that where provided by this module, so plugins
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can register on them.
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*/
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$app->plugins->announceEvents($this->module_name,$this->actions_available);
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/*
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As we want to get notified of any changes on several database tables,
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we register for them.
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The following function registers the function "functionname"
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to be executed when a record for the table "dbtable" is
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processed in the sys_datalog. "classname" is the name of the
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class that contains the function functionname.
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*/
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$app->modules->registerTableHook('dns_soa',$this->module_name,'process');
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$app->modules->registerTableHook('dns_slave',$this->module_name,'process');
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$app->modules->registerTableHook('dns_rr',$this->module_name,'process');
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// Register service
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$app->services->registerService('bind','dns_module','restartBind');
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$app->services->registerService('powerdns','dns_module','restartPowerDNS');
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}
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/*
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This function is called when a change in one of the registered tables is detected.
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The function then raises the events for the plugins.
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*/
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function process($tablename,$action,$data) {
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global $app;
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switch ($tablename) {
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case 'dns_soa':
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if($action == 'i') $app->plugins->raiseEvent('dns_soa_insert',$data);
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if($action == 'u') $app->plugins->raiseEvent('dns_soa_update',$data);
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if($action == 'd') $app->plugins->raiseEvent('dns_soa_delete',$data);
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break;
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case 'dns_slave':
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if($action == 'i') $app->plugins->raiseEvent('dns_slave_insert',$data);
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if($action == 'u') $app->plugins->raiseEvent('dns_slave_update',$data);
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if($action == 'd') $app->plugins->raiseEvent('dns_slave_delete',$data);
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break;
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case 'dns_rr':
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if($action == 'i') $app->plugins->raiseEvent('dns_rr_insert',$data);
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if($action == 'u') $app->plugins->raiseEvent('dns_rr_update',$data);
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if($action == 'd') $app->plugins->raiseEvent('dns_rr_delete',$data);
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break;
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} // end switch
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} // end function
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function restartBind($action = 'restart') {
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global $app,$conf;
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$daemon = '';
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if(is_file($conf['init_scripts'] . '/' . 'bind9')) {
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$daemon = 'bind9';
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} else {
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$daemon = 'named';
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}
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if($action == 'restart') {
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exec($conf['init_scripts'] . '/' . $daemon . ' restart');
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} else {
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exec($conf['init_scripts'] . '/' . $daemon . ' reload');
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}
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}
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function restartPowerDNS($action = 'restart') {
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global $app,$conf;
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$app->log("restartPDNS called.",LOGLEVEL_DEBUG);
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/** Since PowerDNS does not currently allow to limit AXFR for specific zones to specific
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* IP addresses, we create a list of IPs allowed of AXFR transfers from our PowerDNS,
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* however any of these IPs is allowed to AXFR transfer any of the zones we are masters
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* for.
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*/
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$tmps = $app->db->queryAllRecords("SELECT DISTINCT xfer FROM dns_soa WHERE active = 'Y' UNION SELECT DISTINCT xfer FROM dns_slave WHERE active = 'Y' ");
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//* Make sure the list is never empty
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$options='127.0.0.1';
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foreach($tmps as $tmp) {
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if (trim($tmp['xfer'])!='') {
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if ($options=='') {
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$options.=$tmp['xfer'];
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} else {
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$options=$options.",".$tmp['xfer'];
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}
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}
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}
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//* Remove duplicate IPs from the array
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$options = "allow-axfr-ips=".implode(",",array_unique(explode(",",$options)));
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$app->log("".$options,LOGLEVEL_DEBUG);
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/** Not an ideal way to use a hardcoded path like that, but currently
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* we have no way to find out where powerdns' configuration files are
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* located, so we have to work on assumption.
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*/
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file_put_contents('/etc/powerdns/pdns.d/pdns.ispconfig-axfr',$options."\n");
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$daemon= '';
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if (is_file($conf['init_scripts'] . '/' . 'powerdns')) {
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$daemon = 'powerdns';
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} else {
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$daemon = 'pdns';
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}
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exec($conf['init_scripts'] . '/' . $daemon . ' restart');
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// unset $tmps;
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}
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} // end class
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?>
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