From cc5c30cc690d5ca8bf468aa57ab9b225075af004 Mon Sep 17 00:00:00 2001
From: "Michael Kaufmann (d00p)" <d00p@froxlor.org>
Date: Mon, 28 Jun 2010 08:23:11 +0000
Subject: [PATCH] - check for defined variable in makeCorrectFile as an
 undefined may return unwanted values

---
 lib/functions/filedir/function.makeCorrectFile.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/functions/filedir/function.makeCorrectFile.php b/lib/functions/filedir/function.makeCorrectFile.php
index 752439aa..2d4d9c45 100644
--- a/lib/functions/filedir/function.makeCorrectFile.php
+++ b/lib/functions/filedir/function.makeCorrectFile.php
@@ -29,6 +29,15 @@
 
 function makeCorrectFile($filename)
 {
+	if (!isset($filename)
+		|| trim($filename) == ''
+	) {
+		$error = 'Given filename for function '.__FUNCTION__.' is empty.'."\n";
+		$error.= 'This is very dangerous and should not happen.'."\n";
+		$error.= 'Please inform the Froxlor team about this issue so they can fix it.';
+		die($error);
+	}
+
 	if(substr($filename, 0, 1) != '/')
 	{
 		$filename = '/' . $filename;