X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FUtil%2FLDSignature.php;h=b2b6c90db25d2f148015a62e5a3ab4bced4ac94d;hb=05bd0d0b671ad509465fa6cddabc3c2a07c796a7;hp=c9fde441fdcfcbcb4e80bdafff36b02cd163cca3;hpb=991f259ecb58720c0993718bc944bc60e83226b4;p=friendica.git

diff --git a/src/Util/LDSignature.php b/src/Util/LDSignature.php
index c9fde441fd..b2b6c90db2 100644
--- a/src/Util/LDSignature.php
+++ b/src/Util/LDSignature.php
@@ -1,15 +1,31 @@
 <?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
 
 namespace Friendica\Util;
 
 use Friendica\Core\Logger;
-use Friendica\Util\JsonLD;
-use Friendica\Util\DateTimeFormat;
-use Friendica\Protocol\ActivityPub;
 use Friendica\Model\APContact;
 
 /**
- * @brief Implements JSON-LD signatures
+ * Implements JSON-LD signatures
  *
  * Ported from Osada: https://framagit.org/macgirvin/osada
  */
@@ -27,7 +43,7 @@ class LDSignature
 		}
 
 		$actor = JsonLD::fetchElement($data, 'actor', 'id');
-		if (empty($actor)) {
+		if (empty($actor) || !is_string($actor)) {
 			return false;
 		}