X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FUtil%2FACLFormatter.php;h=a7d851508d4e22d1c9441b959eb541c56e2875b9;hb=4dec002dcb0b4abfd08f8761b37295e602243d96;hp=1fb7787610bdee27167b83847d79cce30e21150b;hpb=b632114b12ec9a160d5442419c21a068c2eb472b;p=friendica.git

diff --git a/src/Util/ACLFormatter.php b/src/Util/ACLFormatter.php
index 1fb7787610..a7d851508d 100644
--- a/src/Util/ACLFormatter.php
+++ b/src/Util/ACLFormatter.php
@@ -12,12 +12,17 @@ final class ACLFormatter
 	/**
 	 * Turn user/group ACLs stored as angle bracketed text into arrays
 	 *
-	 * @param string $ids A angle-bracketed list of IDs
+	 * @param string|null $ids A angle-bracketed list of IDs
 	 *
-	 * @return array The array based on the IDs
+	 * @return array The array based on the IDs (empty in case there is no list)
 	 */
-	public function expand(string $ids)
+	public function expand(string $ids = null)
 	{
+		// In case there is no ID list, return empty array (=> no ACL set)
+		if (!isset($ids)) {
+			return [];
+		}
+
 		// turn string array of angle-bracketed elements into numeric array
 		// e.g. "<1><2><3>" => array(1,2,3);
 		preg_match_all('/<(' . Group::FOLLOWERS . '|'. Group::MUTUALS . '|[0-9]+)>/', $ids, $matches, PREG_PATTERN_ORDER);
@@ -31,10 +36,16 @@ final class ACLFormatter
 	 * @param string $item The item to sanitise
 	 */
 	private function sanitize(string &$item) {
+		// The item is an ACL int value
 		if (intval($item)) {
 			$item = '<' . intval(Strings::escapeTags(trim($item))) . '>';
+		// The item is a allowed ACL character
 		} elseif (in_array($item, [Group::FOLLOWERS, Group::MUTUALS])) {
 			$item = '<' . $item . '>';
+		// The item is already a ACL string
+		} elseif (preg_match('/<\d+?>/', $item)) {
+			unset($item);
+		// The item is not supported, so remove it (cleanup)
 		} else {
 			$item = '';
 		}