| | |
| | | /** |
| | | * 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 Private-Key and DKIM Public-Key |
| | | * returns DKIM keys, selector, and dns-record |
| | | */ |
| | | |
| | | |
| | |
| | | require_once '../../lib/app.inc.php'; |
| | | require_once '../../lib/classes/validate_dkim.inc.php'; |
| | | |
| | | $validate_dkim=new validate_dkim (); |
| | | |
| | | //* 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'); |
| | | |
| | | /** |
| | | * This function fix PHP's messing up POST input containing characters space, dot, |
| | | * open square bracket and others to be compatible with with the deprecated register_globals |
| | | * @return array POST |
| | | */ |
| | | function getRealPOST() { |
| | | $pairs = explode("&", file_get_contents("php://input")); |
| | | $vars = array(); |
| | | foreach ($pairs as $pair) { |
| | | $nv = explode("=", $pair, 2); |
| | | $name = urldecode($nv[0]); |
| | | $value = $nv[1]; |
| | | $vars[$name] = $value; |
| | | } |
| | | return $vars; |
| | | function validate_domain($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; |
| | | } |
| | | |
| | | /** |
| | |
| | | return $public_key; |
| | | } |
| | | |
| | | function get_public_key($private_key) { |
| | | require_once('../../lib/classes/validate_dkim.inc.php'); |
| | | function get_public_key($private_key, $dkim_strength) { |
| | | $validate_dkim=new validate_dkim (); |
| | | if($validate_dkim->validate_post('private',$private_key)) { /* validate the $_POST-value */ |
| | | if($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 { |
| | |
| | | return $public_key; |
| | | } |
| | | |
| | | $_POST=getRealPOST(); |
| | | |
| | | switch ($_POST['action']) { |
| | | case 'create': /* create DKIM Private-key */ |
| | | exec('openssl rand -out /usr/local/ispconfig/server/temp/random-data.bin 4096 2> /dev/null', $output, $result); |
| | | exec('openssl genrsa -rand /usr/local/ispconfig/server/temp/random-data.bin 1024 2> /dev/null', $privkey, $result); |
| | | unlink("/usr/local/ispconfig/server/temp/random-data.bin"); |
| | | foreach($privkey as $values) $private_key=$private_key.$values."\n"; |
| | | break; |
| | | |
| | | case 'show': /* show the DNS-Record onLoad */ |
| | | $private_key=$_POST['pkey']; |
| | | break; |
| | | /** |
| | | * 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; |
| | | } |
| | | |
| | | $public_key=get_public_key($private_key); |
| | | $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>".$public_key."</publickey>\n"; |
| | | echo "<dns_record>v=DKIM1; t=s; p=".$dns_record."</dns_record>\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"; |
| | | ?> |