Fixing encryption stream wrapper seek - thanks @jknockaert

diff --git a/lib/private/files/stream/encryption.php b/lib/private/files/stream/encryption.php
index fcc9984500dba9bfb92be43dec00d3daa5611a3e..fdfe73d99c53b94214897c0938fe768747f678bc 100644 (file)
--- a/lib/private/files/stream/encryption.php
+++ b/lib/private/files/stream/encryption.php
@@ -362,8 +362,11 @@ class Encryption extends Wrapper {
                $newFilePosition = floor($newPosition / $this->unencryptedBlockSize)
                        * $this->util->getBlockSize() + $this->util->getHeaderSize();
 
+               $oldFilePosition = parent::stream_tell();
                if (parent::stream_seek($newFilePosition)) {
+                       parent::stream_seek($oldFilePosition);
                        $this->flush();
+                       parent::stream_seek($newFilePosition);
                        $this->position = $newPosition;
                        $return = true;
                }