From 99adfbdb8663d89b650feab6b797f344a46c82f3 Mon Sep 17 00:00:00 2001
From: Lukas Reschke <lukas@statuscode.ch>
Date: Mon, 14 Jan 2013 16:51:31 +0100
Subject: [PATCH] Check for string position instead of string existence

otherwise /foo/bar would be detected as a subfolder of /bar

THX @icewind1991
---
 lib/helper.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/helper.php b/lib/helper.php
index 47292c56ea8..e7c9ac8015d 100644
--- a/lib/helper.php
+++ b/lib/helper.php
@@ -633,7 +633,7 @@ class OC_Helper {
 	 * @return bool
 	 */
 	public static function issubdirectory($sub, $parent) {
-		if (strpos(realpath($sub), realpath($parent)) !== false) {
+		if (strpos(realpath($sub), realpath($parent)) === 0) {
 			return true;
 		}
 		return false;