* replying with no content (only headers are sent; fast for client side)

* fixing a possible cookie injection
MaxMorgenstern · Sep 17, 2011 · 5465e61 · 5465e61
1 parent 204d040
commit 5465e61
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/ai-cookie.php b/ai-cookie.php
@@ -1,9 +1,9 @@
 <?php
-$maxwidth = $_GET['maxwidth'];
-if($maxwidth == "unknown") { $maxwidth = 3000; } // we need a number, so give it something unfeasable
+$maxwidth = isset($_GET['maxwidth']) ? intval($_GET['maxwidth']) : null;
+
+if(null === $maxwidth || $maxwidth === "unknown") { $maxwidth = 3000; } // we need a number, so give it something unfeasable
 setcookie('resolution',$maxwidth,time()+604800,'/'); // set the cookie
 
-// respond with a (fake) blank image
-header('content-type: image/jpeg');
-exit();
-?>
+// respond with an empty content
+header('HTTP/1.1 204 No Content');
+exit();