From 6fbdc72bc614462878f8066b123cb12a05a4e2e3 Mon Sep 17 00:00:00 2001
From: Jan Schneider <jan@horde.org>
Date: Tue, 14 Feb 2017 14:49:47 +0100
Subject: [PATCH] Copy stream data in chunks.

---
 framework/Vfs/lib/Horde/Vfs/Base.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/framework/Vfs/lib/Horde/Vfs/Base.php b/framework/Vfs/lib/Horde/Vfs/Base.php
index 9acc7b53914..e9722a3b22d 100644
--- a/framework/Vfs/lib/Horde/Vfs/Base.php
+++ b/framework/Vfs/lib/Horde/Vfs/Base.php
@@ -802,7 +802,9 @@ protected function _ensureSeekable($stream)
         $meta = stream_get_meta_data($stream);
         if (!$meta['seekable']) {
             $temp = @fopen('php://temp', 'r+');
-            stream_copy_to_stream($stream, $temp);
+            while (!feof($stream)) {
+                fwrite($temp, fread($stream, 8192));
+            }
             return $temp;
         }