disable dav acl plugin for files resource

Signed-off-by: Robin Appelman <robin@icewind.nl>

apps/dav/lib/Connector/Sabre/DavAclPlugin.php

@@ -28,6 +28,8 @@ use Sabre\DAV\Exception\NotFound;
 use Sabre\DAV\INode;
 use \Sabre\DAV\PropFind;
 use OCA\DAV\CardDAV\AddressBook;
+use Sabre\HTTP\RequestInterface;
+use Sabre\HTTP\ResponseInterface;
 
 /**
  * Class DavAclPlugin is a wrapper around \Sabre\DAVACL\Plugin that returns 404
@@ -84,4 +86,13 @@ class DavAclPlugin extends \Sabre\DAVACL\Plugin {
 
 		return parent::propFind($propFind, $node);
 	}
+
+	function beforeMethod(RequestInterface $request, ResponseInterface $response) {
+		$path = $request->getPath();
+
+		// prevent the plugin from causing an unneeded overhead for file requests
+		if (strpos($path, 'files/') !== 0) {
+			parent::beforeMethod($request, $response);
+		}
+	}
 }