<?php
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/*
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Copyright (c) 2013, Marius Cramer, pixcept KG
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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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DNSSEC-Implementation by Alexander Täffner aka dark alex
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*/
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class cronjob_bind_dnssec extends cronjob {
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// job schedule
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protected $_schedule = '30 3 * * *'; //daily at 3:30 a.m.
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public function onRunJob() {
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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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//TODO : change this when distribution information has been integrated into server record
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$filespre = (file_exists('/etc/gentoo-release')) ? 'pri/' : 'pri.';
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$soas = $app->db->queryAllRecords('SELECT * FROM dns_soa WHERE dnssec_wanted=\'Y\' AND dnssec_initialized=\'Y\' AND dnssec_last_signed < '.(time()-(3600*24*5)+900)); //Resign zones every 5 days (expiry is 16 days so we have enough safety, 15 minutes tolerance)
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foreach ($soas as $data) {
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$domain = substr($data['origin'], 0, strlen($data['origin'])-1);
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if (!file_exists($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain)) return false;
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$app->log('DNSSEC Auto-Resign: Resigning zone '.$domain, LOGLEVEL_INFO);
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$zonefile = file_get_contents($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain);
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$keycount=0;
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foreach (glob($dns_config['bind_zonefiles_dir'].'/K'.$domain.'*.key') as $keyfile) {
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$includeline = '$INCLUDE '.basename($keyfile);
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if (!preg_match('@'.preg_quote($includeline).'@', $zonefile)) $zonefile .= "\n".$includeline."\n";
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$keycount++;
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}
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if ($keycount != 2) $app->log('DNSSEC Warning: There are more or less than 2 keyfiles for zone '.$domain, LOGLEVEL_WARN);
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file_put_contents($dns_config['bind_zonefiles_dir'].'/'.$filespre.$domain, $zonefile);
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//Sign the zone and set it valid for max. 16 days
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exec('cd '.escapeshellcmd($dns_config['bind_zonefiles_dir']).';'.
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'/usr/sbin/dnssec-signzone -A -e +1382400 -3 $(head -c 1000 /dev/random | sha1sum | cut -b 1-16) -N increment -o '.escapeshellcmd($domain).' -t '.$filespre.escapeshellcmd($domain));
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//Write Data back into DB
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$dnssecdata = "DS-Records:\n".file_get_contents($dns_config['bind_zonefiles_dir'].'/dsset-'.$domain.'.');
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$dnssecdata .= "\n------------------------------------\n\nDNSKEY-Records:\n";
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foreach (glob($dns_config['bind_zonefiles_dir'].'/K'.$domain.'*.key') as $keyfile) {
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$dnssecdata .= file_get_contents($keyfile)."\n\n";
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}
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$app->db->query('UPDATE dns_soa SET dnssec_info=\''.$dnssecdata.'\', dnssec_initialized=\'Y\', dnssec_last_signed=\''.time().'\' WHERE id='.$data['id']);
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$data = next($soas);
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}
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parent::onRunJob();
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}
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}
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?>
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