outsource some dns functions to own files; allow opening of dns-editor only for domains that belong to the user (or the user has permission to edit as admin/reseller)

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

lib/functions/dns/function.getAllowedDomainEntry.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * This file is part of the Froxlor project.
+ * Copyright (c) 2016 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 Froxlor team <team@froxlor.org> (2016-)
+ * @license GPLv2 http://files.froxlor.org/misc/COPYING.txt
+ * @package Functions
+ *
+ */
+
+function getAllowedDomainEntry($domain_id, $area = 'customer', $userinfo, &$idna_convert)
+{
+	$dom_data = array(
+		'did' => $domain_id
+	);
+
+	$where_clause = '';
+	if ($area == 'admin') {
+		if ($userinfo['domains_see_all'] != '1') {
+			$where_clause = '`adminid` = :uid';
+			$dom_data['uid'] = $userinfo['userid'];
+		}
+	} else {
+		$where_clause = '`customerid` = :uid';
+		$dom_data['uid'] = $userinfo['userid'];
+	}
+
+	$dom_stmt = Database::prepare("
+		SELECT domain, isbinddomain
+		FROM `" . TABLE_PANEL_DOMAINS . "`
+		WHERE " . $where_clause . " AND id = :did
+	");
+	$domain = Database::pexecute_first($dom_stmt, $dom_data);
+
+	if ($domain) {
+		if ($domain['isbinddomain'] != '1') {
+			standard_error('dns_domain_nodns');
+		}
+		return $idna_convert->decode($domain['domain']);
+	}
+	standard_error('dns_notfoundorallowed');
+}