From d0455c5819099751fb8614a76c272a23c6494b65 Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind@owncloud.com>
Date: Thu, 21 Jun 2012 17:37:53 +0200
Subject: truncate decrypted files based on filelength

---
 apps/files_encryption/lib/crypt.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'apps/files_encryption/lib/crypt.php')

diff --git a/apps/files_encryption/lib/crypt.php b/apps/files_encryption/lib/crypt.php
index 4c0ffa978ed..1c90954cec8 100644
--- a/apps/files_encryption/lib/crypt.php
+++ b/apps/files_encryption/lib/crypt.php
@@ -206,12 +206,16 @@ class OC_Crypt {
 	/**
 	 * decrypt data in 8192b sized blocks
 	 */
-	public static function blockDecrypt($data, $key=''){
+	public static function blockDecrypt($data, $key='',$maxLength=0){
 		$result='';
 		while(strlen($data)){
 			$result.=self::decrypt(substr($data,0,8192),$key);
 			$data=substr($data,8192);
 		}
-		return rtrim($result, "\0");
+		if($maxLength>0){
+			return substr($result,0,$maxLength);
+		}else{
+			return rtrim($result, "\0");
+		}
 	}
 }
-- 
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