The Tor Browser: comparison dom/xbl/test/file

--1:000000000000
+:e957acf45140
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=821850
+-->
+<head>
+<bindings xmlns="http://www.mozilla.org/xbl">
+<binding id="testBinding">
+<implementation>
+<constructor>
+// Store a property as an expando on the bound element.
+this._prop = "propVal";
+// Wait for both constructors to fire.
+window.constructorCount = (window.constructorCount + 1) || 1;
+if (window.constructorCount != 2)
+return;
+// Grab some basic infrastructure off the content window.
+var win = XPCNativeWrapper.unwrap(window);
+SpecialPowers = win.SpecialPowers;
+Cu = SpecialPowers.Cu;
+is = win.is;
+ok = win.ok;
+SimpleTest = win.SimpleTest;
+// Stick some expandos on the content window.
+window.xrayExpando = 3;
+win.primitiveExpando = 11;
+win.stringExpando = "stringExpando";
+win.objectExpando = { foo: 12 };
+win.globalExpando = SpecialPowers.unwrap(Cu.getGlobalForObject({}));
+win.functionExpando = function() { return "called" };
+win.functionExpando.prop = 2;
+// Make sure we're Xraying.
+ok(Cu.isXrayWrapper(window), "Window is Xrayed");
+ok(Cu.isXrayWrapper(document), "Document is Xrayed");
+var bound = document.getElementById('bound');
+ok(bound, "bound is non-null");
+is(bound.method('baz'), "method:baz", "Xray methods work");
+is(bound.prop, "propVal", "Property Xrays work");
+is(bound.primitiveField, undefined, "Xrays don't show fields");
+is(bound.wrappedJSObject.primitiveField, 2, "Waiving Xrays show fields");
+// Check exposure behavior.
+is(typeof bound.unexposedMethod, 'function',
+"Unexposed method should be visible to XBL");
+is(typeof bound.wrappedJSObject.unexposedMethod, 'undefined',
+"Unexposed method should not be defined in content");
+is(typeof bound.unexposedProperty, 'number',
+"Unexposed property should be visible to XBL");
+is(typeof bound.wrappedJSObject.unexposedProperty, 'undefined',
+"Unexposed property should not be defined in content");
+// Check that here HTMLImageElement.QueryInterface works
+var img = document.querySelector("img");
+ok("QueryInterface" in img,
+"Should have a img.QueryInterface here");
+is(img.QueryInterface(Components.interfaces.nsIImageLoadingContent),
+img, "Should be able to QI the image");
+// Make sure standard constructors work right in the presence of
+// sandboxPrototype and Xray-resolved constructors.
+is(window.Function, XPCNativeWrapper(window.wrappedJSObject.Function),
+"window.Function comes from the window, not the global");
+ok(Function != window.Function, "Function constructors are distinct");
+is(Object.getPrototypeOf(Function.prototype), Object.getPrototypeOf({foo: 42}),
+"Function constructor is local");
+// This gets invoked by an event handler.
+window.finish = function() {
+// Content messed with stuff. Make sure we still see the right thing.
+is(bound.method('bay'), "method:bay", "Xray methods work");
+is(bound.wrappedJSObject.method('bay'), "hah", "Xray waived methods work");
+is(bound.prop, "set:someOtherVal", "Xray props work");
+is(bound.wrappedJSObject.prop, "redefined", "Xray waived props work");
+is(bound.wrappedJSObject.primitiveField, 321, "Can't do anything about redefined fields");
+SimpleTest.finish();
+}
+// Hand things off to content. Content will call us back.
+win.go();
+</constructor>
+<field name="primitiveField">2</field>
+<method name="unexposedMethod"><body></body></method>
+<property name="unexposedProperty" onget="return 2;" readonly="true"></property>
+<method name="method" exposeToUntrustedContent="true">
+<parameter name="arg" />
+<body>
+return "method:" + arg;
+</body>
+</method>
+<method name="passMeAJSObject" exposeToUntrustedContent="true">
+<parameter name="arg" />
+<body>
+is(typeof arg.prop, 'undefined', "No properties");
+is(Object.getOwnPropertyNames(arg).length, 0, "Should have no own properties");
+try {
+arg.foo = 2;
+ok(true, "Stuff fails silently");
+} catch (e) {
+ok(false, "Stuff should fail silently");
+}
+is(typeof arg.foo, 'undefined', "Shouldn't place props");
+</body>
+</method>
+<property name="prop" exposeToUntrustedContent="true">
+<getter>return this._prop;</getter>
+<setter>this._prop = "set:" + val;</setter>
+</property>
+</implementation>
+<handlers>
+<handler event="testevent" action="ok(true, 'called event handler'); finish();" allowuntrusted="true"/>
+<handler event="testtrusted" action="ok(true, 'called trusted handler'); window.wrappedJSObject.triggeredTrustedHandler = true;"/>
+<handler event="keyup" action="ok(true, 'called untrusted key handler'); window.wrappedJSObject.triggeredUntrustedKeyHandler = true;" allowuntrusted="true"/>
+<handler event="keydown" action="ok(true, 'called trusted key handler'); window.wrappedJSObject.triggeredTrustedKeyHandler = true;"/>
+</handlers>
+</binding>
+</bindings>
+<script type="application/javascript">
+<![CDATA[
+ok = parent.ok;
+is = parent.is;
+SimpleTest = parent.SimpleTest;
+SpecialPowers = parent.SpecialPowers;
+// Test the Xray waiving behavior when accessing fields. We should be able to
+// see sequential JS-implemented properties, but should regain Xrays when we
+// hit a native property.
+window.contentVal = { foo: 10, rabbit: { hole: { bar: 100, win: window} } };
+ok(true, "Set contentVal");
+// Check that we're not exposing QueryInterface to non-XBL code
+ok(!("QueryInterface" in document),
+"Should not have a document.QueryInterface here");
+function go() {
+"use strict";
+// Test what we can and cannot access in the XBL scope.
+is(typeof window.xrayExpando, "undefined", "Xray expandos are private to the caller");
+is(window.primitiveExpando, 11, "Can see waived expandos");
+is(window.stringExpando, "stringExpando", "Can see waived expandos");
+is(typeof window.objectExpando, "object", "object expando exists");
+checkThrows(function() window.objectExpando.foo);
+is(SpecialPowers.wrap(window.objectExpando).foo, 12, "SpecialPowers sees the right thing");
+is(typeof window.globalExpando, "object", "Can see global object");
+checkThrows(function() window.globalExpando.win);
+is(window.functionExpando(), "called", "XBL functions are callable");
+checkThrows(function() window.functionExpando.prop);
+// Inspect the bound element.
+var bound = document.getElementById('bound');
+is(bound.primitiveField, 2, "Can see primitive fields");
+is(bound.method("foo"), "method:foo", "Can invoke XBL method from content");
+is(bound.prop, "propVal", "Can access properties from content");
+bound.prop = "someOtherVal";
+is(bound.prop, "set:someOtherVal", "Can set properties from content");
+// Make sure we can't pass JS objects to the XBL scope.
+var proto = bound.__proto__;
+proto.passMeAJSObject({prop: 2});
+//
+// Try sticking a bunch of stuff on the prototype object.
+//
+proto.someExpando = 201;
+is(bound.someExpando, 201, "Can stick non-XBL properties on the proto");
+// Previously, this code checked that content couldn't tamper with its XBL
+// prototype. But we decided to allow this to reduce regression risk, so for
+// now just check that this works.
+function checkMayTamper(obj, propName, desc) {
+var accessor = !('value' in Object.getOwnPropertyDescriptor(obj, propName));
+if (!accessor)
+checkAllowed(function() { obj[propName] = function() {} }, desc + ": assign");
+checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, value: 3}) }, desc + ": define with value");
+checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, writable: true}) }, desc + ": make writable");
+checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true}) }, desc + ": make configurable");
+checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, get: function() {}}) }, desc + ": define with getter");
+checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, set: function() {}}) }, desc + ": define with setter");
+// Windows are implemented as proxies, and Proxy::delete_ doesn't currently
+// pass strict around. Work around it in the window.binding case by just
+// checking if delete returns false.
+// manually.
+checkAllowed(function() { delete obj[propName]; }, desc + ": delete");
+if (!accessor)
+checkAllowed(function() { obj[propName] = function() {} }, desc + ": assign (again)");
+}
+// Make sure content can do whatever it wants with the prototype.
+checkMayTamper(proto, 'method', "XBL Proto Method");
+checkMayTamper(proto, 'prop', "XBL Proto Prop");
+checkMayTamper(proto, 'primitiveField', "XBL Field Accessor");
+// Tamper with the derived object. This doesn't affect the XBL scope thanks
+// to Xrays.
+bound.method = function() { return "heh"; };
+Object.defineProperty(bound, 'method', {value: function() { return "hah" }});
+Object.defineProperty(bound, 'prop', {value: "redefined"});
+bound.primitiveField = 321;
+// We need a chrome window to create trusted events. This isn't really doable
+// in child processes, so let's just skip if that's the case.
+if (SpecialPowers.isMainProcess()) {
+var Ci = SpecialPowers.Ci;
+var chromeWin = SpecialPowers.wrap(window.top)
+.QueryInterface(Ci.nsIInterfaceRequestor)
+.getInterface(Ci.nsIWebNavigation)
+.QueryInterface(Ci.nsIDocShell)
+.chromeEventHandler.ownerDocument.defaultView;
+// Untrusted events should not trigger event handlers without
+// exposeToUntrustedContent=true.
+window.triggeredTrustedHandler = false;
+var untrustedEvent = new CustomEvent('testtrusted');
+ok(!untrustedEvent.isTrusted, "Created an untrusted event");
+is(untrustedEvent.type, 'testtrusted', "Constructor should see type");
+bound.dispatchEvent(untrustedEvent);
+ok(!window.triggeredTrustedHandler, "untrusted events should not trigger trusted handler");
+var trustedEvent = new chromeWin.CustomEvent('testtrusted');
+ok(trustedEvent.isTrusted, "Created a trusted event");
+is(trustedEvent.type, 'testtrusted', "Wrapped constructor should see type");
+SpecialPowers.wrap(bound).dispatchEvent(trustedEvent);
+ok(window.triggeredTrustedHandler, "trusted events should trigger trusted handler");
+//
+// We check key events as well, since they're implemented differently.
+//
+// NB: We don't check isTrusted on the events we create here, because
+// according to smaug, old-style event initialization doesn't mark the
+// event as trusted until it's dispatched.
+//
+window.triggeredUntrustedKeyHandler = false;
+window.triggeredTrustedKeyHandler = false;
+// Untrusted event, permissive handler.
+var untrustedKeyEvent = document.createEvent('KeyboardEvent');
+untrustedKeyEvent.initEvent('keyup', true, true);
+bound.dispatchEvent(untrustedKeyEvent);
+ok(window.triggeredUntrustedKeyHandler, "untrusted key events should trigger untrusted handler");
+// Untrusted event, strict handler.
+var fakeTrustedKeyEvent = document.createEvent('KeyboardEvent');
+fakeTrustedKeyEvent.initEvent('keydown', true, true);
+bound.dispatchEvent(fakeTrustedKeyEvent);
+ok(!window.triggeredTrustedKeyHandler, "untrusted key events should not trigger trusted handler");
+// Trusted event, strict handler.
+var trustedKeyEvent = chromeWin.document.createEvent('KeyboardEvent');
+trustedKeyEvent.initEvent('keydown', true, true);
+SpecialPowers.wrap(bound).dispatchEvent(trustedKeyEvent);
+ok(window.triggeredTrustedKeyHandler, "trusted key events should trigger trusted handler");
+}
+// Hand control back to the XBL scope by dispatching an event on the bound element.
+bound.dispatchEvent(new CustomEvent('testevent'));
+}
+function checkThrows(fn) {
+try { fn(); ok(false, "Should have thrown"); }
+catch (e) { ok(!!/denied|insecure/.exec(e), "Should have thrown security exception: " + e); }
+}
+function checkAllowed(fn, desc) {
+try { fn(); ok(true, desc + ": Didn't throw"); }
+catch (e) { ok(false, desc + ": Threw: " + e); }
+}
+function setup() {
+// When the bindings are applied, the constructor will be invoked and the
+// test will continue.
+document.getElementById('bound').style.MozBinding = 'url(#testBinding)';
+document.getElementById('bound2').style.MozBinding = 'url(#testBinding)';
+}
+]]>
+</script>
+</head>
+<body onload="setup()">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=821850">Mozilla Bug 821850</a>
+<p id="display"></p>
+<div id="content">
+<div id="bound">Bound element</div>
+<div id="bound2">Bound element</div>
+<img/>
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>

The Tor Browser / file comparison

comparison: dom/xbl/test/file_bug821850.xhtml

dom/xbl/test/file_bug821850.xhtml