2013-02-08 06:24:22 -08:00
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<html xmlns="http://www.w3.org/1999/xhtml">
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=821850
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-->
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<head>
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<bindings xmlns="http://www.mozilla.org/xbl">
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<binding id="testBinding">
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<implementation>
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<constructor>
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// Store a property as an expando on the bound element.
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this._prop = "propVal";
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// Wait for both constructors to fire.
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window.constructorCount = (window.constructorCount + 1) || 1;
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if (window.constructorCount != 2)
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return;
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// Grab some basic infrastructure off the content window.
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var win = XPCNativeWrapper.unwrap(window);
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SpecialPowers = win.SpecialPowers;
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Cu = SpecialPowers.Cu;
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is = win.is;
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ok = win.ok;
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SimpleTest = win.SimpleTest;
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// Stick some expandos on the content window.
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window.xrayExpando = 3;
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win.primitiveExpando = 11;
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win.stringExpando = "stringExpando";
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win.objectExpando = { foo: 12 };
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win.globalExpando = SpecialPowers.unwrap(Cu.getGlobalForObject({}));
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win.functionExpando = function() { return "called" };
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win.functionExpando.prop = 2;
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// Make sure we're Xraying.
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ok(Cu.isXrayWrapper(window), "Window is Xrayed");
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ok(Cu.isXrayWrapper(document), "Document is Xrayed");
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var bound = document.getElementById('bound');
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ok(bound, "bound is non-null");
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is(bound.method('baz'), "method:baz", "Xray methods work");
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is(bound.prop, "propVal", "Property Xrays work");
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is(bound.primitiveField, 2, "Field Xrays work");
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is(bound.objectField.bar.a, 1, "Field Xrays work on objects");
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is(bound.contentField.foo, 10, "Field Xrays work on content objects");
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var hole = bound.contentField.rabbit.hole;
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is(hole.win, window, "We gain back Xray vision when hitting a native object");
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ok(Cu.isXrayWrapper(hole.win), "Really is Xray");
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// This gets invoked by an event handler.
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window.finish = function() {
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// Content messed with stuff. Make sure we still see the right thing.
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is(bound.method('bay'), "method:bay", "Xray methods work");
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is(bound.wrappedJSObject.method('bay'), "hah", "Xray waived methods work");
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is(bound.prop, "set:someOtherVal", "Xray props work");
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is(bound.wrappedJSObject.prop, "redefined", "Xray waived props work");
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is(bound.primitiveField, 321, "Can't do anything about redefined fields");
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SimpleTest.finish();
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}
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// Hand things off to content. Content will call us back.
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win.go();
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</constructor>
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<field name="primitiveField">2</field>
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<field name="objectField">({ foo: 2, bar: {a: 1} })</field>
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<field name="contentField">XPCNativeWrapper.unwrap(window).contentVal</field>
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<method name="method">
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<parameter name="arg" />
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<body>
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return "method:" + arg;
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</body>
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</method>
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<property name="prop">
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<getter>return this._prop;</getter>
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<setter>this._prop = "set:" + val;</setter>
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</property>
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</implementation>
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<handlers>
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<handler event="testevent" action="ok(true, 'called event handler'); finish();"/>
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</handlers>
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</binding>
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</bindings>
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<script type="application/javascript">
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<![CDATA[
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2013-02-22 07:56:03 -08:00
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ok = parent.ok;
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is = parent.is;
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SimpleTest = parent.SimpleTest;
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SpecialPowers = parent.SpecialPowers;
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2013-02-08 06:24:22 -08:00
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// Test the Xray waiving behavior when accessing fields. We should be able to
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// see sequential JS-implemented properties, but should regain Xrays when we
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// hit a native property.
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window.contentVal = { foo: 10, rabbit: { hole: { bar: 100, win: window} } };
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ok(true, "Set contentVal");
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function go() {
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"use strict";
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// Test what we can and cannot access in the XBL scope.
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is(typeof window.xrayExpando, "undefined", "Xray expandos are private to the caller");
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is(window.primitiveExpando, 11, "Can see waived expandos");
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is(window.stringExpando, "stringExpando", "Can see waived expandos");
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is(typeof window.objectExpando, "object", "object expando exists");
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checkThrows(function() window.objectExpando.foo);
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is(SpecialPowers.wrap(window.objectExpando).foo, 12, "SpecialPowers sees the right thing");
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is(typeof window.globalExpando, "object", "Can see global object");
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checkThrows(function() window.globalExpando.win);
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is(window.functionExpando(), "called", "XBL functions are callable");
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checkThrows(function() window.functionExpando.prop);
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// Inspect the bound element.
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2013-02-22 07:56:03 -08:00
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var bound = document.getElementById('bound');
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2013-02-08 06:24:22 -08:00
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is(bound.primitiveField, 2, "Can see primitive fields");
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is(typeof bound.objectField, "object", "objectField exists");
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checkThrows(function() bound.objectField.foo);
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is(bound.method("foo"), "method:foo", "Can invoke XBL method from content");
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is(bound.prop, "propVal", "Can access properties from content");
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bound.prop = "someOtherVal";
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is(bound.prop, "set:someOtherVal", "Can set properties from content");
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//
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// Try sticking a bunch of stuff on the prototype object.
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//
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var proto = bound.__proto__;
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proto.someExpando = 201;
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is(bound.someExpando, 201, "Can stick non-XBL properties on the proto");
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2013-02-13 10:16:19 -08:00
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// Previously, this code checked that content couldn't tamper with its XBL
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// prototype. But we decided to allow this to reduce regression risk, so for
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// now just check that this works.
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function checkMayTamper(obj, propName, desc) {
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2013-02-08 06:24:22 -08:00
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var accessor = !('value' in Object.getOwnPropertyDescriptor(obj, propName));
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if (!accessor)
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2013-02-13 10:16:19 -08:00
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checkAllowed(function() { obj[propName] = function() {} }, desc + ": assign");
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checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, value: 3}) }, desc + ": define with value");
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checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, writable: true}) }, desc + ": make writable");
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checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true}) }, desc + ": make configurable");
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checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, get: function() {}}) }, desc + ": define with getter");
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checkAllowed(function() { Object.defineProperty(obj, propName, {configurable: true, set: function() {}}) }, desc + ": define with setter");
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2013-02-08 06:24:22 -08:00
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// Windows are implemented as proxies, and Proxy::delete_ doesn't currently
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// pass strict around. Work around it in the window.binding case by just
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// checking if delete returns false.
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// manually.
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2013-02-13 10:16:19 -08:00
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checkAllowed(function() { delete obj[propName]; }, desc + ": delete");
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if (!accessor)
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checkAllowed(function() { obj[propName] = function() {} }, desc + ": assign (again)");
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2013-02-08 06:24:22 -08:00
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}
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2013-02-13 10:16:19 -08:00
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// Make sure content can do whatever it wants with the prototype.
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checkMayTamper(proto, 'method', "XBL Proto Method");
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checkMayTamper(proto, 'prop', "XBL Proto Prop");
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checkMayTamper(proto, 'primitiveField', "XBL Field Accessor");
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2013-02-08 06:24:22 -08:00
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2013-02-13 10:16:19 -08:00
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// As above, check that content can do what it wants with the prototype's
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// property on the global.
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2013-02-08 06:24:22 -08:00
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var protoName, count = 0;
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for (var k of Object.getOwnPropertyNames(window)) {
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if (!/testBinding/.exec(k))
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continue;
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count++;
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protoName = k;
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}
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is(count, 1, "Should be exactly one prototype object");
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2013-02-13 10:16:19 -08:00
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checkMayTamper(window, protoName, "XBL prototype prop on window");
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2013-02-08 06:24:22 -08:00
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// Tamper with the derived object. This doesn't affect the XBL scope thanks
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// to Xrays.
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2013-02-13 10:16:19 -08:00
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bound.method = function() { return "heh"; };
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Object.defineProperty(bound, 'method', {value: function() { return "hah" }});
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Object.defineProperty(bound, 'prop', {value: "redefined"});
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bound.primitiveField = 321;
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// Hand control back to the XBL scope by dispatching an event on the bound element.
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bound.dispatchEvent(new CustomEvent('testevent'));
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}
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function checkThrows(fn) {
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try { fn(); ok(false, "Should have thrown"); }
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catch (e) { ok(!!/denied|insecure/.exec(e), "Should have thrown security exception: " + e); }
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}
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2013-02-13 10:16:19 -08:00
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function checkAllowed(fn, desc) {
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try { fn(); ok(true, desc + ": Didn't throw"); }
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catch (e) { ok(false, desc + ": Threw: " + e); }
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2013-02-08 06:24:22 -08:00
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}
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function setup() {
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// When the bindings are applied, the constructor will be invoked and the
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// test will continue.
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2013-02-22 07:56:03 -08:00
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document.getElementById('bound').style.MozBinding = 'url(#testBinding)';
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document.getElementById('bound2').style.MozBinding = 'url(#testBinding)';
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2013-02-08 06:24:22 -08:00
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}
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]]>
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</script>
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</head>
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<body onload="setup()">
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=821850">Mozilla Bug 821850</a>
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<p id="display"></p>
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<div id="content">
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<div id="bound">Bound element</div>
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<div id="bound2">Bound element</div>
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</div>
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<pre id="test">
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</pre>
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</body>
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</html>
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