Add another tweak for handling CSP - we need to make sure that we don…

…'t trigger any eval on load (not sure if it's the best tweak, definitely not ideal). Add a test page as well so that it's easier to catch problem.
jquery · Jan 18, 2011 · 9c763ad39d42c54d24f659e7895a8f361a08d27c · 9c763ad · jeresig · Jan 18, 2011
1 parent c1d719b
commit 9c763ad39d42c54d24f659e7895a8f361a08d27c
Showing 2 changed files with 40 additions and 1 deletion.
diff --git a/src/support.js b/src/support.js
@@ -75,7 +75,7 @@
 	jQuery.support.optDisabled = !opt.disabled;
 
 	jQuery.support.scriptEval = function() {
-		if ( jQuery.support._scriptEval === null) {
+		if ( jQuery.support._scriptEval === null ) {
 			var root = document.documentElement,
 				script = document.createElement("script"),
 				id = "script" + jQuery.now();
@@ -101,6 +101,7 @@
 			// release memory in IE
 			root = script = id  = null;
 		}
+
 		return jQuery.support._scriptEval;
 	};
 
@@ -187,6 +188,14 @@
 		var el = document.createElement("div");
 		eventName = "on" + eventName;
 
+		// We only care about the case where non-standard event systems
+		// are used, namely in IE. Short-circuiting here helps us to
+		// avoid an eval call (in setAttribute) which can cause CSP
+		// to go haywire. See: https://developer.mozilla.org/en/Security/CSP
+		if ( !el.attachEvent ) {
+			return true;
+		}
+
 		var isSupported = (eventName in el);
 		if ( !isSupported ) {
 			el.setAttribute(eventName, "return;");

diff --git a/test/csp.php b/test/csp.php
@@ -0,0 +1,30 @@
+<?php header("X-Content-Security-Policy-Report-Only: allow *"); ?>
+<!DOCTYPE html>
+<html>
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+	<title>CSP Test Page</title>
+
+  <script src="../src/core.js"></script>
+  <script src="../src/support.js"></script>
+  <script src="../src/data.js"></script>
+  <script src="../src/queue.js"></script>
+  <script src="../src/attributes.js"></script>
+  <script src="../src/event.js"></script>
+  <script src="../src/sizzle/sizzle.js"></script>
+  <script src="../src/sizzle-jquery.js"></script>
+  <script src="../src/traversing.js"></script>
+  <script src="../src/manipulation.js"></script>
+  <script src="../src/css.js"></script>
+  <script src="../src/ajax.js"></script>
+  <script src="../src/ajax/jsonp.js"></script>
+  <script src="../src/ajax/script.js"></script>
+  <script src="../src/ajax/xhr.js"></script>
+  <script src="../src/effects.js"></script>
+  <script src="../src/offset.js"></script>
+  <script src="../src/dimensions.js"></script>
+</head>
+<body>
+	<p>CSP Test Page</p>
+</body>
+</html>