Do not return backends but add a method to check for one

1 files changed, 14 insertions, 3 deletions

diff --git a/lib/private/group/manager.php b/lib/private/group/manager.php
index 6399f16f9c8..70263fc2afa 100644
--- a/lib/private/group/manager.php
+++ b/lib/private/group/manager.php
@@ -98,10 +98,21 @@ class Manager extends PublicEmitter implements IGroupManager {
 	}
 
 	/**
-	 * @return \OC_Group_Backend[] Get registered backends
+	 * Checks whether a given backend is used
+	 *
+	 * @param string $backendClass Full classname including complete namespace
+	 * @return bool
 	 */
-	public function getBackends() {
-		return $this->backends;
+	public function isBackendUsed($backendClass) {
+		$backendClass = strtolower(ltrim($backendClass, '\\'));
+
+		foreach ($this->backends as $backend) {
+			if (strtolower(get_class($backend)) === $backendClass) {
+				return true;
+			}
+		}
+
+		return false;
 	}
 
 	/**