From 09b84bd3cea65020b021e096783780bf1e98be8c Mon Sep 17 00:00:00 2001
From: icewing <icewing@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 30 May 2008 08:26:40 +0000
Subject: Marcus Povey <marcus@dushka.co.uk> * Improved callpath_gatekeeper

git-svn-id: https://code.elgg.org/elgg/trunk@763 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/elgglib.php | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index 92d76d84b..9c287fdb7 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -1050,30 +1050,44 @@
 	 * 
 	 * @param string $path The full path and filename that this function must have in its call stack
 	 * @param bool $include_subdirs Are subdirectories of the path ok, or must you specify an absolute path and filename.
+	 * @param bool $limited_mode If true then the calling method or function must be directly called by something on $path, if false the whole call stack is searched.
 	 */
-	function callpath_gatekeeper($path, $include_subdirs = true)
+	function callpath_gatekeeper($path, $include_subdirs = true, $limited_mode = false)
 	{
+		global $CONFIG;
+		
 		$path = sanitise_string($path);
 		
 		if ($path)
 		{
 			$callstack = debug_backtrace();
-			
+				
 			foreach ($callstack as $call)
 			{
 				if ($include_subdirs)
 				{
 					if (strpos($call['file'], $path) === 0)
-						return true;
+						if ($limited_mode) {
+							if ($callstack[2] === $call) return true;
+						}
+						else
+							return true;
 				}
 				else
 				{
 					if (strcmp($path, $call['file'])==0)
-						return true;
+						if ($limited_mode) {
+							if ($callstack[2] === $call) return true;
+						} else
+							return true;
 				}
+				
 			}
 		}
 		
+		if ($CONFIG->debug)
+			system_message("Gatekeeper'd function called from {$callstack[2]['file']}:{$callstack[2]['line']}\n\nStack trace:\n\n" . print_r($callstack, true));
+		
 		return false;
 	}
 
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