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<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 != 3)
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');
var bound2 = document.getElementById('bound2');
var bound3 = document.getElementById('bound3');
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");
ok(Object.getPrototypeOf(bound.wrappedJSObject) == Object.getPrototypeOf(bound2.wrappedJSObject),
"Div and div should have the same content-side prototype");
ok(Object.getPrototypeOf(bound.wrappedJSObject) != Object.getPrototypeOf(bound3.wrappedJSObject),
"Div and span should have different content-side prototypes");
ok(bound.wrappedJSObject.method == bound3.wrappedJSObject.method,
"Methods should be shared");
// 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(arg.wrappedJSObject.prop, 2, "Underlying object has properties");
is(Object.getOwnPropertyNames(arg).length, 0, "Should have no own properties");
is(Object.getOwnPropertyNames(arg.wrappedJSObject).length, 1, "Underlying object has properties");
arg.foo = 2;
is(arg.foo, 2, "Should place expandos");
is(typeof arg.wrappedJSObject.foo, 'undefined', "Expandos should be invisible to content");
</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(() => 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(() => window.globalExpando.win);
is(window.functionExpando(), "called", "XBL functions are callable");
checkThrows(() => 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 that XBL scopes get opaque wrappers.
//
// Note: Now that we have object Xrays, we have to pass in a more obscure
// ES type that we don't Xray to test this.
var proto = bound.__proto__;
var nonXrayableObject = new WeakMap();
nonXrayableObject.prop = 2;
proto.passMeAJSObject(nonXrayableObject);
//
// 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;
// Untrusted events should not trigger event handlers without
// exposeToUntrustedContent=true.
window.triggeredTrustedHandler = false;
var untrustedEvent = new CustomEvent('testtrusted');
is(untrustedEvent.type, 'testtrusted', "Constructor should see type");
bound.dispatchEvent(untrustedEvent);
ok(!window.triggeredTrustedHandler, "untrusted events should not trigger trusted handler");
var trustedEvent = new CustomEvent('testtrusted');
is(trustedEvent.type, 'testtrusted', "Wrapped constructor should see type");
SpecialPowers.wrap(bound).dispatchEvent(trustedEvent); // Dispatch over SpecialPowers to make the event trusted.
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. Dispatch using SpecialPowers to make the event trusted.
var trustedKeyEvent = 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)';
document.getElementById('bound3').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>
<span id="bound3">Bound element</span>
<img/>
</div>
<pre id="test">
</pre>
</body>
</html>
|
