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| | | <?php |
| | | |
| | | /** |
| | | Copyright (c) 2007 - 2013, Till Brehm, projektfarm Gmbh |
| | | Copyright (c) 2013, Florian Schaal, info@schaal-24.de |
| | | All rights reserved. |
| | | |
| | | Redistribution and use in source and binary forms, with or without modification, |
| | | are permitted provided that the following conditions are met: |
| | | |
| | | * Redistributions of source code must retain the above copyright notice, |
| | | this list of conditions and the following disclaimer. |
| | | * 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. |
| | | * Neither the name of ISPConfig nor the names of its contributors |
| | | may be used to endorse or promote products derived from this software without |
| | | specific prior written permission. |
| | | |
| | | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| | | ANY EXPRESS 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 COPYRIGHT OWNER OR 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. |
| | | */ |
| | | |
| | | /** |
| | | * This script is invoked by interface/js/mail_domain_dkim.js |
| | | * to generate or show the DKIM Private-key and to show the Private-key. |
| | | * returns DKIM keys, selector, and dns-record |
| | | */ |
| | | |
| | | |
| | | require_once '../../lib/config.inc.php'; |
| | | require_once '../../lib/app.inc.php'; |
| | | require_once '../../lib/classes/validate_dkim.inc.php'; |
| | | |
| | | //* Check permissions for module |
| | | $app->auth->check_module_permissions('mail'); |
| | | |
| | | header('Content-Type: text/xml; charset=utf-8'); |
| | | header('Cache-Control: must-revalidate, pre-check=0, no-store, no-cache, max-age=0, post-check=0'); |
| | | |
| | | function validate_domain($domain) { |
| | | $regex = '/^[\w\.\-]{2,255}\.[a-zA-Z0-9\-]{2,30}$/'; |
| | | if ( preg_match($regex, $domain) === 1 ) return true; else return false; |
| | | } |
| | | |
| | | function validate_selector($selector) { |
| | | $regex = '/^[a-z0-9]{0,63}$/'; |
| | | if ( preg_match($regex, $selector) === 1 ) return true; else return false; |
| | | } |
| | | |
| | | /** |
| | | * This function formats the public-key |
| | | * @param array $pubkey |
| | | * @return string public-key |
| | | */ |
| | | function pub_key($pubkey) { |
| | | $public_key=''; |
| | | foreach($pubkey as $values) $public_key=$public_key.$values."\n"; |
| | | return $public_key; |
| | | } |
| | | |
| | | function get_public_key($private_key, $dkim_strength) { |
| | | $validate_dkim=new validate_dkim (); |
| | | if($validate_dkim->validate_post('private', $private_key, $dkim_strength)) { /* validate the $_POST-value */ |
| | | exec('echo '.escapeshellarg($private_key).'|openssl rsa -pubout -outform PEM 2> /dev/null',$pubkey,$result); |
| | | $public_key=pub_key($pubkey); |
| | | } else { |
| | | $public_key='invalid key'; |
| | | } |
| | | return $public_key; |
| | | } |
| | | |
| | | /** |
| | | * This function updates the selector if a new key-pair was created |
| | | * and the selector is already used in the dns-record |
| | | * @param string $old_selector |
| | | * @return string selector |
| | | */ |
| | | function new_selector ($old_selector, $domain, $client_id = -1) { |
| | | global $app; |
| | | //* validate post-values |
| | | if ( validate_domain($domain) && validate_selector($old_selector) ) { |
| | | //* get active selectors from dns |
| | | $soa_rec = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE active = 'Y' AND origin = ?"); |
| | | if ( isset($soa_rec) && !empty($soa_rec) ) { |
| | | //* check for a dkim-record in the dns? |
| | | $dns_data = $app->db->queryOneRecord("SELECT name FROM dns_rr WHERE name = ? AND active = 'Y''", $old_selector.'._domainkey.'.$domain.'.'); |
| | | if ( !empty($dns_data) ){ |
| | | $selector = str_replace( '._domainkey.'.$domain.'.', '', $dns_data['name']); |
| | | } else { |
| | | } |
| | | } else { //* no dns-zone found - check for existing mail-domain to create a new selector (we need this if a external dns is used) |
| | | if ( $client_id >= 0 ) { |
| | | $sql = "SELECT * from mail_domain WHERE dkim = 'y' AND domain = ? AND dkim_selector = ?"; |
| | | $maildomain = $app->db->queryOneRecord($sql, $domain, $old_selector); |
| | | if ( !empty($maildomain) ) { |
| | | $selector = $maildomain['selector']; |
| | | } |
| | | } |
| | | } |
| | | if ( $old_selector == $selector) { |
| | | $selector = substr($old_selector, 0, 53) . time(); //* add unix-timestamp to delimiter to allow old and new key in the dns |
| | | } else { |
| | | $selector = $old_selector; |
| | | } |
| | | } else { |
| | | $selector = 'invalid domain or selector'; |
| | | } |
| | | return $selector; |
| | | } |
| | | |
| | | $client_id = $app->functions->intval($_POST['client_id']); |
| | | |
| | | //* get dkim-strength for server_id |
| | | $sql = "SELECT server_id from mail_domain WHERE domain = ?"; |
| | | $mail_server = $app->db->queryOneRecord($sql, $_POST['domain']); |
| | | if ( is_array($mail_server) ) { //* we are adding an existing mail-domain |
| | | $mail_server_id = $app->functions->intval( $mail_server['server_id'] ); |
| | | } else { |
| | | $sql = "SELECT default_mailserver FROM client WHERE client_id = ?"; |
| | | $mail_server = $app->db->queryOneRecord($sql, $client_id); |
| | | $mail_server_id = $app->functions->intval( $mail_server['default_mailserver'] ); |
| | | } |
| | | unset($mail_server); |
| | | $mail_config = $app->getconf->get_server_config($mail_server_id, 'mail'); |
| | | $dkim_strength = $app->functions->intval($mail_config['dkim_strength']); |
| | | unset($mail_config); |
| | | |
| | | if ( empty($dkim_strength) ) $dkim_strength = 2048; |
| | | |
| | | $rnd_val = $dkim_strength * 10; |
| | | exec('openssl rand -out ../../temp/random-data.bin '.$rnd_val.' 2> /dev/null', $output, $result); |
| | | exec('openssl genrsa -rand ../../temp/random-data.bin '.$dkim_strength.' 2> /dev/null', $privkey, $result); |
| | | unlink("../../temp/random-data.bin"); |
| | | foreach($privkey as $values) $private_key=$private_key.$values."\n"; |
| | | //* check the selector for updated dkim-settings only |
| | | if ( isset($_POST['dkim_public']) && !empty($_POST['dkim_public']) ) $selector = new_selector($_POST['dkim_selector'], $_POST['domain'], $client_id); |
| | | |
| | | if ( !isset($public_key) ) $public_key=get_public_key($private_key, $dkim_strength); |
| | | |
| | | $dns_record=str_replace(array('-----BEGIN PUBLIC KEY-----','-----END PUBLIC KEY-----',"\r","\n"),'',$public_key); |
| | | |
| | | if ( !isset($selector) ) { |
| | | if ( validate_selector($_POST['dkim_selector']) ) $selector=$_POST['dkim_selector']; |
| | | } |
| | | echo "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"; |
| | | echo "<formatname>\n"; |
| | | echo "<selector>".$selector."</selector>\n"; |
| | | echo "<privatekey>".$private_key."</privatekey>\n"; |
| | | echo "<publickey>".$public_key."</publickey>\n"; |
| | | if ( validate_domain($_POST['domain']) ) { |
| | | echo '<dns_record>'.$selector.'._domainkey.'.$_POST['domain'].'. 3600 TXT "v=DKIM1; t=s; p='.$dns_record.'"</dns_record>'; |
| | | } |
| | | echo "</formatname>\n"; |
| | | ?> |