From 7da3f6d30e1557baf969885a357b9cb7853ecaaf Mon Sep 17 00:00:00 2001
From: David Flatz
Date: Wed, 11 Feb 2015 19:20:24 +0100
Subject: warn about potential redirect loops

---
 it_url.class | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/it_url.class b/it_url.class
index b9bb17c..02b084e 100644
--- a/it_url.class
+++ b/it_url.class
@@ -856,6 +856,10 @@ function redirect($url = null, $type = "temporary")
 		it::fatal("Invalid redirect type '$type', must be 'permanent' or 'temporary'");
 
 	$url = preg_replace("/[\r\n].*/", '', it_url::absolute($url));	# Security: cut after CR/LF
+
+	if (U($url) == U(it_url::absolute(U($_GET))))
+		it::error('Potential redirect loop detected: ' . $url);
+
 	if (EDC('noredir')) {
 		if (!function_exists('a'))
 			new it_html();
-- 
cgit v1.2.3