From 4736bba7f66589577136e6741f95eec0b2f685ff Mon Sep 17 00:00:00 2001
From: Joas Schilling <coding@schilljs.com>
Date: Thu, 25 Nov 2021 08:48:26 +0100
Subject: [PATCH] Check for invalid characters before trimming

Signed-off-by: Joas Schilling <coding@schilljs.com>
---
 lib/private/Files/Storage/Common.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/private/Files/Storage/Common.php b/lib/private/Files/Storage/Common.php
index 4c07426dd70..7239c58a8a1 100644
--- a/lib/private/Files/Storage/Common.php
+++ b/lib/private/Files/Storage/Common.php
@@ -554,8 +554,8 @@ abstract class Common implements Storage, ILockingStorage, IWriteStreamStorage {
 	 * @throws InvalidPathException
 	 */
 	protected function verifyPosixPath($fileName) {
-		$fileName = trim($fileName);
 		$this->scanForInvalidCharacters($fileName, "\\/");
+		$fileName = trim($fileName);
 		$reservedNames = ['*'];
 		if (in_array($fileName, $reservedNames)) {
 			throw new ReservedWordException();