LE: support alias domains

LE CSRs are triggered for the aliasdomain target domain on

* domain deletion

* domain creation

* domain editing when
  * the aliasdomain target changes (CSR triggered both for old and new
    target)
  * wwwalias is disabled or enabled
  * letsencrypt is disabled or enabled (domain-local)

fixes #1597

lib/functions/froxlor/function.triggerLetsEncryptCSRForAliasDestinationDomain.php

@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * This file is part of the Froxlor project.
+ * Copyright (c) 2010 the Froxlor Team (see authors).
+ *
+ * For the full copyright and license information, please view the COPYING
+ * file that was distributed with this source code. You can also view the
+ * COPYING file online at http://files.froxlor.org/misc/COPYING.txt
+ *
+ * @copyright  (c) the authors
+ * @author     Daniel Reichelt <hacking@nachtgeist.net> (2016-)
+ * @license    GPLv2 http://files.froxlor.org/misc/COPYING.txt
+ * @package    Functions
+ *
+ */
+
+function triggerLetsEncryptCSRForAliasDestinationDomain($aliasDestinationDomainID, $log)
+{
+	if (isset($aliasDestinationDomainID) && $aliasDestinationDomainID > 0) {
+		$log->logAction(ADM_ACTION, LOG_INFO, "LetsEncrypt CSR triggered for domain ID " . $aliasDestinationDomainID);
+		$upd_stmt = Database::prepare(
+			"UPDATE
+					`" . TABLE_PANEL_DOMAIN_SSL_SETTINGS . "`
+				SET
+					`expirationdate` = null
+				WHERE
+					domainid = :domainid
+			");
+		Database::pexecute($upd_stmt, array(
+			'domainid' => $aliasDestinationDomainID
+		));
+	}
+}