1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
|
<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=933681
-->
<window title="Mozilla Bug 933681"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
<!-- test results are displayed in the html:body -->
<body xmlns="http://www.w3.org/1999/xhtml">
<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=933681"
target="_blank">Mozilla Bug 933681</a>
</body>
<!-- test code goes here -->
<script type="application/javascript">
<![CDATA[
/** Test for ES constructors on Xrayed globals. **/
SimpleTest.waitForExplicitFinish();
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
let global = Cu.getGlobalForObject.bind(Cu);
function checkThrows(f, rgxp, msg) {
try {
f();
ok(false, "Should have thrown: " + msg);
} catch (e) {
ok(true, "Threw as expected: " + msg);
ok(rgxp.test(e), "Message correct: " + e);
}
}
typedArrayClasses = ['Uint8Array', 'Int8Array', 'Uint16Array', 'Int16Array',
'Uint32Array', 'Int32Array', 'Float32Array', 'Float64Array',
'Uint8ClampedArray'];
errorObjectClasses = ['Error', 'InternalError', 'EvalError', 'RangeError', 'ReferenceError',
'SyntaxError', 'TypeError', 'URIError'];
// A simpleConstructors entry can either be the name of a constructor as a
// string, or an object containing the properties `name`, and `args`.
// In the former case, the constructor is invoked without any args; in the
// latter case, it is invoked with `args` as the arguments list.
simpleConstructors = ['Object', 'Function', 'Array', 'Boolean', 'Date', 'Number',
'String', 'RegExp', 'ArrayBuffer', 'WeakMap', 'Map', 'Set',
{name: 'Promise', args: [function(){}]}].concat(typedArrayClasses)
.concat(errorObjectClasses);
function go() {
window.iwin = document.getElementById('ifr').contentWindow;
// Test constructors that can be instantiated with zero arguments, or with
// a fixed set of arguments provided using `...rest`.
for (var c of simpleConstructors) {
var args = [];
if (typeof c === 'object') {
args = c.args;
c = c.name;
}
ok(iwin[c], "Constructors appear: " + c);
is(iwin[c], Cu.unwaiveXrays(iwin.wrappedJSObject[c]),
"we end up with the appropriate constructor: " + c);
is(Cu.unwaiveXrays(Cu.waiveXrays(new iwin[c](...args)).constructor), iwin[c],
"constructor property is set up right: " + c);
let expectedProto = /Opaque/.test(new iwin[c](...args)) ? iwin['Object'].prototype
: iwin[c].prototype;
is(Object.getPrototypeOf(new iwin[c](...args)), expectedProto,
"prototype is correct: " + c);
is(global(new iwin[c](...args)), iwin, "Got the right global: " + c);
}
// Test Object in more detail.
var num = new iwin.Object(4);
is(Cu.waiveXrays(num).valueOf(), 4, "primitive object construction works");
is(global(num), iwin, "correct global for num");
var obj = new iwin.Object();
obj.foo = 2;
var withProto = Cu.unwaiveXrays(Cu.waiveXrays(iwin).Object.create(obj));
is(global(withProto), iwin, "correct global for withProto");
is(Cu.waiveXrays(withProto).foo, 2, "Inherits properly");
// Test Function.
var primitiveFun = new iwin.Function('return 2');
is(global(primitiveFun), iwin, "function construction works");
is(primitiveFun(), 2, "basic function works");
var doSetFoo = new iwin.Function('arg', 'arg.foo = 2;');
is(global(doSetFoo), iwin, "function with args works");
try {
doSetFoo(new Object());
ok(false, "should have thrown while setting property on object");
} catch (e) {
ok(!!/denied/.test(e), "Threw correctly: " + e);
}
var factoryFun = new iwin.Function('return {foo: 32}');
is(global(factoryFun), iwin, "proper global for factoryFun");
is(factoryFun().foo, 32, "factoryFun invokable");
is(global(factoryFun()), iwin, "minted objects live in the content scope");
testXray('Function', factoryFun, new iwin.Function(), ['length', 'name']);
var echoThis = new iwin.Function('return this;');
echoThis.wrappedJSObject.bind = 42;
var boundEchoThis = echoThis.bind(document);
is(boundEchoThis(), document, "bind() works correctly over Xrays");
is(global(boundEchoThis), window, "bound functions live in the caller's scope");
ok(/return this/.test(echoThis.toSource()), 'toSource works: ' + echoThis.toSource());
ok(/return this/.test(echoThis.toString()), 'toString works: ' + echoThis.toString());
is(iwin.Function.prototype, Object.getPrototypeOf(echoThis), "Function.prototype works for standard classes");
is(echoThis.prototype, undefined, "Function.prototype not visible for non standard constructors");
iwin.eval('var foopyFunction = function namedFoopyFunction(a, b, c) {}');
var foopyFunction = Cu.unwaiveXrays(Cu.waiveXrays(iwin).foopyFunction);
ok(Cu.isXrayWrapper(foopyFunction), "Should be Xrays");
is(foopyFunction.name, "namedFoopyFunction", ".name works over Xrays");
is(foopyFunction.length, 3, ".length works over Xrays");
ok(Object.getOwnPropertyNames(foopyFunction).indexOf('length') >= 0, "Should list length");
ok(Object.getOwnPropertyNames(foopyFunction).indexOf('name') >= 0, "Should list name");
ok(Object.getOwnPropertyNames(foopyFunction).indexOf('prototype') == -1, "Should not list prototype");
ok(Object.getOwnPropertyNames(iwin.Array).indexOf('prototype') >= 0, "Should list prototype for standard constructor");
// Test proxies.
var targetObject = new iwin.Object();
targetObject.foo = 9;
var forwardingProxy = new iwin.Proxy(targetObject, new iwin.Object());
is(global(forwardingProxy), iwin, "proxy global correct");
is(Cu.waiveXrays(forwardingProxy).foo, 9, "forwards correctly");
// Test eval.
var toEval = "({a: 2, b: {foo: 'bar'}, f: function() { return window; }})";
is(global(iwin.eval(toEval)), iwin, "eval creates objects in the correct global");
is(iwin.eval(toEval).b.foo, 'bar', "eval-ed object looks right");
is(Cu.waiveXrays(iwin.eval(toEval)).f(), Cu.waiveXrays(iwin), "evaled function works right");
testDate();
testObject();
testArray();
testTypedArrays();
testErrorObjects();
testRegExp();
testPromise();
testArrayBuffer();
// We could also test DataView and Iterator here for completeness, but it's
// more trouble than it's worth.
SimpleTest.finish();
}
// Maintain a static list of the properties that are available on each standard
// prototype, so that we make sure to audit any new ones to make sure they're
// Xray-safe.
//
// DO NOT CHANGE WTIHOUT REVIEW FROM AN XPCONNECT PEER.
var version = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULAppInfo).version;
var isNightlyBuild = version.endsWith("a1");
var isReleaseOrBeta = !version.includes("a");
var gPrototypeProperties = {};
var gConstructorProperties = {};
function constructorProps(arr) {
// Some props live on all constructors
return arr.concat(["prototype", "length", "name"]);
}
gPrototypeProperties['Date'] =
["getTime", "getTimezoneOffset", "getYear", "getFullYear", "getUTCFullYear",
"getMonth", "getUTCMonth", "getDate", "getUTCDate", "getDay", "getUTCDay",
"getHours", "getUTCHours", "getMinutes", "getUTCMinutes", "getSeconds",
"getUTCSeconds", "getMilliseconds", "getUTCMilliseconds", "setTime",
"setYear", "setFullYear", "setUTCFullYear", "setMonth", "setUTCMonth",
"setDate", "setUTCDate", "setHours", "setUTCHours", "setMinutes",
"setUTCMinutes", "setSeconds", "setUTCSeconds", "setMilliseconds",
"setUTCMilliseconds", "toUTCString", "toLocaleFormat", "toLocaleString",
"toLocaleDateString", "toLocaleTimeString", "toDateString", "toTimeString",
"toISOString", "toJSON", "toSource", "toString", "valueOf", "constructor",
"toGMTString", Symbol.toPrimitive];
gConstructorProperties['Date'] = constructorProps(["UTC", "parse", "now"]);
gPrototypeProperties['Object'] =
["constructor", "toSource", "toString", "toLocaleString", "valueOf", "watch",
"unwatch", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable",
"__defineGetter__", "__defineSetter__", "__lookupGetter__", "__lookupSetter__",
"__proto__"];
gConstructorProperties['Object'] =
constructorProps(["setPrototypeOf", "getOwnPropertyDescriptor", "getOwnPropertyDescriptors",
"keys", "is", "defineProperty", "defineProperties", "create",
"getOwnPropertyNames", "getOwnPropertySymbols",
"preventExtensions", "freeze", "isFrozen", "seal",
"isSealed", "assign", "getPrototypeOf", "values",
"entries", "isExtensible"])
gPrototypeProperties['Array'] =
["length", "toSource", "toString", "toLocaleString", "join", "reverse", "sort", "push",
"pop", "shift", "unshift", "splice", "concat", "slice", "lastIndexOf", "indexOf",
"includes", "forEach", "map", "reduce", "reduceRight", "filter", "some", "every", "find",
"findIndex", "copyWithin", "fill", Symbol.iterator, Symbol.unscopables, "entries", "keys",
"values", "constructor"];
if (isNightlyBuild) {
// ...nothing now
}
gConstructorProperties['Array'] =
constructorProps(["join", "reverse", "sort", "push", "pop", "shift",
"unshift", "splice", "concat", "slice", "isArray",
"lastIndexOf", "indexOf", "forEach", "map", "filter",
"every", "some", "reduce", "reduceRight", "from", "of",
Symbol.species]);
for (var c of typedArrayClasses) {
gPrototypeProperties[c] = ["constructor", "BYTES_PER_ELEMENT"];
gConstructorProperties[c] = constructorProps(["BYTES_PER_ELEMENT"]);
}
gPrototypeProperties['TypedArray'] =
["length", "buffer", "byteLength", "byteOffset", Symbol.iterator, "subarray",
"set", "copyWithin", "find", "findIndex", "forEach","indexOf", "lastIndexOf", "includes",
"reverse", "join", "every", "some", "reduce", "reduceRight", "entries", "keys", "values",
"slice", "map", "filter"];
// There is no TypedArray constructor, looks like.
is(window.TypedArray, undefined, "If this ever changes, add to this test!");
for (var c of errorObjectClasses) {
gPrototypeProperties[c] = ["constructor", "name", "message", "stack"];
gConstructorProperties[c] = constructorProps([]);
}
// toString and toSource only live on the parent proto (Error.prototype).
gPrototypeProperties['Error'].push('toString');
gPrototypeProperties['Error'].push('toSource');
gPrototypeProperties['Function'] =
["constructor", "toSource", "toString", "apply", "call", "bind",
"isGenerator", "length", "name", "arguments", "caller", Symbol.hasInstance];
gConstructorProperties['Function'] = constructorProps([])
gPrototypeProperties['RegExp'] =
["constructor", "toSource", "toString", "compile", "exec", "test",
Symbol.match, Symbol.replace, Symbol.search, Symbol.split,
"flags", "global", "ignoreCase", "multiline", "source", "sticky", "unicode"];
gConstructorProperties['RegExp'] =
constructorProps(["input", "lastMatch", "lastParen",
"leftContext", "rightContext", "$1", "$2", "$3", "$4",
"$5", "$6", "$7", "$8", "$9", "$_", "$&", "$+",
"$`", "$'", Symbol.species])
gPrototypeProperties['Promise'] =
["constructor", "catch", "then", Symbol.toStringTag];
gConstructorProperties['Promise'] =
constructorProps(["resolve", "reject", "all", "race", Symbol.species]);
gPrototypeProperties['ArrayBuffer'] =
["constructor", "byteLength", "slice", Symbol.toStringTag];
gConstructorProperties['ArrayBuffer'] =
constructorProps(["isView", "slice", Symbol.species]);
if (!isReleaseOrBeta) {
gPrototypeProperties['SharedArrayBuffer'] = ["constructor", "slice", "byteLength", Symbol.toStringTag];
gConstructorProperties['SharedArrayBuffer'] = constructorProps([Symbol.species]);
} else {
is(typeof SharedArrayBuffer, "undefined", "Enable tests!");
}
// Sort an array that may contain symbols as well as strings.
function sortProperties(arr) {
function sortKey(prop) {
return typeof prop + ":" + prop.toString();
}
arr.sort((a, b) => sortKey(a) < sortKey(b) ? -1 : +1);
}
// Sort all the lists so we don't need to mutate them later (or copy them
// again to sort them).
for (var c of Object.keys(gPrototypeProperties))
sortProperties(gPrototypeProperties[c]);
for (var c of Object.keys(gConstructorProperties))
sortProperties(gConstructorProperties[c]);
function filterOut(array, props) {
return array.filter(p => props.indexOf(p) == -1);
}
function isTypedArrayClass(classname) {
return typedArrayClasses.indexOf(classname) >= 0;
}
function propertyIsGetter(obj, name, classname) {
return !!Object.getOwnPropertyDescriptor(obj, name).get;
}
function testProtoCallables(protoCallables, xray, xrayProto, localProto) {
for (let name of protoCallables) {
info("Running tests for property: " + name);
// Test both methods and getter properties.
function lookupCallable(obj) {
let desc = null;
do {
desc = Object.getOwnPropertyDescriptor(obj, name);
obj = Object.getPrototypeOf(obj);
} while (!desc);
return desc.get || desc.value;
};
ok(xrayProto.hasOwnProperty(name), "proto should have the property as own");
ok(!xray.hasOwnProperty(name), "instance should not have the property as own");
let method = lookupCallable(xrayProto);
is(typeof method, 'function', "Methods from Xrays are functions");
is(global(method), window, "Methods from Xrays are local");
ok(method instanceof Function, "instanceof works on methods from Xrays");
is(lookupCallable(xrayProto), method, "Holder caching works properly");
is(lookupCallable(xray), method, "Proto props resolve on the instance");
let local = lookupCallable(localProto);
is(method.length, local.length, "Function.length identical");
if (method.length == 0) {
is(method.call(xray) + "", local.call(xray) + "",
"Xray and local method results stringify identically");
// If invoking this method returns something non-Xrayable, the
// stringification is going to return [object Opaque].
ok(!/Opaque/.test(method.call(xray)), "Method result is xrayable");
is(method.call(xray) + "",
lookupCallable(xray.wrappedJSObject).call(xray.wrappedJSObject) + "",
"Xray and waived method results stringify identically");
}
}
}
function testCtorCallables(ctorCallables, xrayCtor, localCtor) {
for (let name of ctorCallables) {
// Don't try to test Function.prototype, since that is in fact a callable
// but doesn't really do the things we expect callables to do here
// (e.g. it's in the wrong global, since it gets Xrayed itself).
if (name == "prototype" && localCtor.name == "Function") {
continue;
}
info(`Running tests for property: ${localCtor.name}.${name}`);
// Test both methods and getter properties.
function lookupCallable(obj) {
let desc = null;
do {
desc = Object.getOwnPropertyDescriptor(obj, name);
obj = Object.getPrototypeOf(obj);
} while (!desc);
return desc.get || desc.value;
};
ok(xrayCtor.hasOwnProperty(name), "ctor should have the property as own");
let method = lookupCallable(xrayCtor);
is(typeof method, 'function', "Methods from ctor Xrays are functions");
is(global(method), window, "Methods from ctor Xrays are local");
ok(method instanceof Function,
"instanceof works on methods from ctor Xrays");
is(lookupCallable(xrayCtor), method,
"Holder caching works properly on ctors");
let local = lookupCallable(localCtor);
is(method.length, local.length,
"Function.length identical for method from ctor");
// Don't try to do the return-value check on Date.now(), since there is
// absolutely no reason it should return the same value each time.
//
// Also don't try to do the return-value check on Regexp.lastMatch and
// Regexp["$&"] (which are aliases), because they get state off the global
// they live in, as far as I can tell, so testing them over Xrays will be
// wrong: on the Xray they will actaully get the lastMatch of _our_
// global, not the Xrayed one.
if (method.length == 0 &&
!(localCtor.name == "Date" && name == "now") &&
!(localCtor.name == "RegExp" && (name == "lastMatch" || name == "$&"))) {
is(method.call(xrayCtor) + "", local.call(xrayCtor) + "",
"Xray and local method results stringify identically on constructors");
is(method.call(xrayCtor) + "",
lookupCallable(xrayCtor.wrappedJSObject).call(xrayCtor.wrappedJSObject) + "",
"Xray and waived method results stringify identically");
}
}
}
function testXray(classname, xray, xray2, propsToSkip, ctorPropsToSkip = []) {
propsToSkip = propsToSkip || [];
let xrayProto = Object.getPrototypeOf(xray);
let localProto = window[classname].prototype;
let desiredProtoProps = Object.getOwnPropertyNames(localProto).sort();
is(desiredProtoProps.toSource(),
gPrototypeProperties[classname].filter(id => typeof id === "string").toSource(),
"A property on the " + classname +
" prototype has changed! You need a security audit from an XPConnect peer");
is(Object.getOwnPropertySymbols(localProto).map(uneval).sort().toSource(),
gPrototypeProperties[classname].filter(id => typeof id !== "string").map(uneval).sort().toSource(),
"A symbol-keyed property on the " + classname +
" prototype has been changed! You need a security audit from an XPConnect peer");
let protoProps = filterOut(desiredProtoProps, propsToSkip);
let protoCallables = protoProps.filter(name => propertyIsGetter(localProto, name, classname) ||
typeof localProto[name] == 'function' &&
name != 'constructor');
ok(protoCallables.length > 0, "Need something to test");
is(xrayProto, iwin[classname].prototype, "Xray proto is correct");
is(xrayProto, xray.__proto__, "Proto accessors agree");
var protoProto = classname == "Object" ? null : iwin.Object.prototype;
is(Object.getPrototypeOf(xrayProto), protoProto, "proto proto is correct");
testProtoCallables(protoCallables, xray, xrayProto, localProto);
is(Object.getOwnPropertyNames(xrayProto).sort().toSource(),
protoProps.toSource(), "getOwnPropertyNames works");
is(Object.getOwnPropertySymbols(xrayProto).map(uneval).sort().toSource(),
gPrototypeProperties[classname].filter(id => typeof id !== "string" && !propsToSkip.includes(id))
.map(uneval).sort().toSource(),
"getOwnPropertySymbols works");
is(xrayProto.constructor, iwin[classname], "constructor property works");
xrayProto.expando = 42;
is(xray.expando, 42, "Xrayed instances see proto expandos");
is(xray2.expando, 42, "Xrayed instances see proto expandos");
// Now test constructors
localCtor = window[classname];
xrayCtor = xrayProto.constructor;
// We already checked that this is the same as iwin[classname]
let desiredCtorProps =
Object.getOwnPropertyNames(localCtor).sort();
is(desiredCtorProps.toSource(),
gConstructorProperties[classname].filter(id => typeof id === "string").toSource(),
"A property on the " + classname +
" constructor has changed! You need a security audit from an XPConnect peer");
let desiredCtorSymbols =
Object.getOwnPropertySymbols(localCtor).map(uneval).sort()
is(desiredCtorSymbols.toSource(),
gConstructorProperties[classname].filter(id => typeof id !== "string").map(uneval).sort().toSource(),
"A symbol-keyed property on the " + classname +
" constructor has been changed! You need a security audit from an XPConnect peer");
let ctorProps = filterOut(desiredCtorProps, ctorPropsToSkip);
let ctorSymbols = filterOut(desiredCtorSymbols, ctorPropsToSkip.map(uneval));
let ctorCallables = ctorProps.filter(name => propertyIsGetter(localCtor, name, classname) ||
typeof localCtor[name] == 'function');
testCtorCallables(ctorCallables, xrayCtor, localCtor);
is(Object.getOwnPropertyNames(xrayCtor).sort().toSource(),
ctorProps.toSource(), "getOwnPropertyNames works on Xrayed ctors");
is(Object.getOwnPropertySymbols(xrayCtor).map(uneval).sort().toSource(),
ctorSymbols.toSource(), "getOwnPropertySymbols works on Xrayed ctors");
}
// We will need arraysEqual and testArrayIterators both in this global scope
// and in sandboxes, so define them as strings up front.
var arraysEqualSource = `function arraysEqual(arr1, arr2, reason) {
is(arr1.length, arr2.length, \`\${reason}; lengths should be equal\`)
for (var i = 0; i < arr1.length; ++i) {
if (Array.isArray(arr2[i])) {
arraysEqual(arr1[i], arr2[i], \`\${reason}; item at index \${i}\`);
} else {
is(arr1[i], arr2[i], \`\${reason}; item at index \${i} should be equal\`);
}
}
}`;
eval(arraysEqualSource);
var testArrayIteratorsSource = `
function testArrayIterators(arrayLike, equivalentArray, reason) {
arraysEqual([...arrayLike], equivalentArray, \`\${reason}; spread operator\`);
arraysEqual([...arrayLike.entries()], [...equivalentArray.entries()],
\`\${reason}; entries\`);
arraysEqual([...arrayLike.keys()], [...equivalentArray.keys()],
\`\${reason}; keys\`);
if (arrayLike.values) {
arraysEqual([...arrayLike.values()], equivalentArray,
\`\${reason}; values\`);
}
var forEachCopy = [];
arrayLike.forEach(function(arg) { forEachCopy.push(arg); });
arraysEqual(forEachCopy, equivalentArray, \`\${reason}; forEach copy\`);
var everyCopy = [];
arrayLike.every(function(arg) { everyCopy.push(arg); return true; });
arraysEqual(everyCopy, equivalentArray, \`\${reason}; every() copy\`);
var filterCopy = [];
var filterResult = arrayLike.filter(function(arg) {
filterCopy.push(arg);
return true;
});
arraysEqual(filterCopy, equivalentArray, \`\${reason}; filter copy\`);
arraysEqual([...filterResult], equivalentArray, \`\${reason}; filter result\`);
var findCopy = [];
arrayLike.find(function(arg) { findCopy.push(arg); return false; });
arraysEqual(findCopy, equivalentArray, \`\${reason}; find() copy\`);
var findIndexCopy = [];
arrayLike.findIndex(function(arg) { findIndexCopy.push(arg); return false; });
arraysEqual(findIndexCopy, equivalentArray, \`\${reason}; findIndex() copy\`);
var mapCopy = [];
var mapResult = arrayLike.map(function(arg) { mapCopy.push(arg); return arg});
arraysEqual(mapCopy, equivalentArray, \`\${reason}; map() copy\`);
arraysEqual([...mapResult], equivalentArray, \`\${reason}; map() result\`);
var reduceCopy = [];
arrayLike.reduce(function(_, arg) { reduceCopy.push(arg); }, 0);
arraysEqual(reduceCopy, equivalentArray, \`\${reason}; reduce() copy\`);
var reduceRightCopy = [];
arrayLike.reduceRight(function(_, arg) { reduceRightCopy.unshift(arg); }, 0);
arraysEqual(reduceRightCopy, equivalentArray, \`\${reason}; reduceRight() copy\`);
var someCopy = [];
arrayLike.some(function(arg) { someCopy.push(arg); return false; });
arraysEqual(someCopy, equivalentArray, \`\${reason}; some() copy\`);
}`;
eval(testArrayIteratorsSource);
function testDate() {
// toGMTString is handled oddly in the engine. We don't bother to support
// it over Xrays.
let propsToSkip = ['toGMTString'];
testXray('Date', new iwin.Date(), new iwin.Date(), propsToSkip);
// Test the self-hosted toLocaleString.
var d = new iwin.Date();
isnot(d.toLocaleString, Cu.unwaiveXrays(d.wrappedJSObject.toLocaleString), "Different function identities");
is(Cu.getGlobalForObject(d.toLocaleString), window, "Xray global is correct");
is(Cu.getGlobalForObject(d.wrappedJSObject.toLocaleString), iwin, "Underlying global is correct");
is(d.toLocaleString('de-DE'), d.wrappedJSObject.toLocaleString('de-DE'), "Results match");
}
var uniqueSymbol;
function testObject() {
testXray('Object', Cu.unwaiveXrays(Cu.waiveXrays(iwin).Object.create(new iwin.Object())),
new iwin.Object(), []);
// Construct an object full of tricky things.
let symbolProps = '';
uniqueSymbol = iwin.eval('var uniqueSymbol = Symbol("uniqueSymbol"); uniqueSymbol');
symbolProps = `, [uniqueSymbol]: 43,
[Symbol.for("registrySymbolProp")]: 44`;
var trickyObject =
iwin.eval(`(function() {
var o = new Object({
primitiveProp: 42, objectProp: { foo: 2 },
xoProp: top, hasOwnProperty: 10,
get getterProp() { return 2; },
set setterProp(x) { },
get getterSetterProp() { return 3; },
set getterSetterProp(x) { },
callableProp: function() { },
nonXrayableProp: new WeakMap()
${symbolProps}
});
Object.defineProperty(o, "nonConfigurableGetterSetterProp",
{ get: function() { return 5; }, set: function() {} });
return o;
})()`);
testTrickyObject(trickyObject);
}
function testArray() {
// The |length| property is generally very weird, especially with respect
// to its behavior on the prototype. Array.prototype is actually an Array
// instance, and therefore has a vestigial .length. But we don't want to
// show that over Xrays, and generally want .length to just appear as an
// |own| data property. So we add it to the ignore list here, and check it
// separately.
//
// |Symbol.unscopables| should in principle be exposed, but it is
// inconvenient (as it's a data property, unsupported by ClassSpec) and
// low value.
let propsToSkip = ['length', Symbol.unscopables];
testXray('Array', new iwin.Array(20), new iwin.Array(), propsToSkip);
let symbolProps = '';
uniqueSymbol = iwin.eval('var uniqueSymbol = Symbol("uniqueSymbol"); uniqueSymbol');
symbolProps = `trickyArray[uniqueSymbol] = 43;
trickyArray[Symbol.for("registrySymbolProp")] = 44;`;
var trickyArray =
iwin.eval(`var trickyArray = [];
trickyArray.primitiveProp = 42;
trickyArray.objectProp = { foo: 2 };
trickyArray.xoProp = top;
trickyArray.hasOwnProperty = 10;
Object.defineProperty(trickyArray, 'getterProp', { get: function() { return 2; }});
Object.defineProperty(trickyArray, 'setterProp', { set: function(x) {}});
Object.defineProperty(trickyArray, 'getterSetterProp', { get: function() { return 3; }, set: function(x) {}, configurable: true});
Object.defineProperty(trickyArray, 'nonConfigurableGetterSetterProp', { get: function() { return 5; }, set: function(x) {}});
trickyArray.callableProp = function() {};
trickyArray.nonXrayableProp = new WeakMap();
${symbolProps}
trickyArray;`);
// Test indexed access.
trickyArray.wrappedJSObject[9] = "some indexed property";
is(trickyArray[9], "some indexed property", "indexed properties work correctly over Xrays");
is(trickyArray.length, 10, "Length works correctly over Xrays");
checkThrows(function() { "use strict"; delete trickyArray.length; }, /config/, "Can't delete non-configurable 'length' property");
delete trickyArray[9];
is(trickyArray[9], undefined, "Delete works correctly over Xrays");
is(trickyArray.wrappedJSObject[9], undefined, "Delete works correctly over Xrays (viewed via waiver)");
is(trickyArray.length, 10, "length doesn't change");
trickyArray[11] = "some other indexed property";
is(trickyArray.length, 12, "length now changes");
is(trickyArray.wrappedJSObject[11], "some other indexed property");
trickyArray.length = 0;
is(trickyArray.length, 0, "Setting length works over Xray");
is(trickyArray[11], undefined, "Setting length truncates over Xray");
Object.defineProperty(trickyArray, 'length', { configurable: false, enumerable: false, writable: false, value: 0 });
trickyArray[1] = "hi";
is(trickyArray.length, 0, "Length remains non-writable");
is(trickyArray[1], undefined, "Frozen length forbids new properties");
is(trickyArray instanceof iwin.Array, true, "instanceof should work across xray wrappers.");
testTrickyObject(trickyArray);
testArrayIterators(new iwin.Array(1, 1, 2, 3, 5), [1, 1, 2, 3, 5]);
}
// Parts of this function are kind of specific to testing Object, but we factor
// it out so that we can re-use the trickyObject stuff on Arrays.
function testTrickyObject(trickyObject) {
// Make sure it looks right under the hood.
is(trickyObject.wrappedJSObject.getterProp, 2, "Underlying object has getter");
is(Cu.unwaiveXrays(trickyObject.wrappedJSObject.xoProp), top, "Underlying object has xo property");
// Test getOwnPropertyNames.
var expectedNames = ['objectProp', 'primitiveProp'];
if (trickyObject instanceof iwin.Array)
expectedNames.push('length');
is(Object.getOwnPropertyNames(trickyObject).sort().toSource(),
expectedNames.sort().toSource(), "getOwnPropertyNames should be filtered correctly");
var expectedSymbols = [Symbol.for("registrySymbolProp"), uniqueSymbol];
is(Object.getOwnPropertySymbols(trickyObject).map(uneval).sort().toSource(),
expectedSymbols.map(uneval).sort().toSource(),
"getOwnPropertySymbols should be filtered correctly");
// Test that cloning uses the Xray view.
var cloned = Cu.cloneInto(trickyObject, this);
is(Object.getOwnPropertyNames(cloned).sort().toSource(),
expectedNames.sort().toSource(), "structured clone should use the Xray view");
is(Object.getOwnPropertySymbols(cloned).map(uneval).sort().toSource(),
"[]", "structured cloning doesn't clone symbol-keyed properties yet");
// Test iteration and in-place modification. Beware of 'expando', which is the property
// we placed on the xray proto.
var propCount = 0;
for (let prop in trickyObject) {
if (prop == 'primitiveProp')
trickyObject[prop] = trickyObject[prop] - 10;
if (prop != 'expando')
trickyObject[prop] = trickyObject[prop];
++propCount;
}
is(propCount, 3, "Should iterate the correct number of times");
// Test Object.keys.
is(Object.keys(trickyObject).sort().toSource(),
['objectProp', 'primitiveProp'].toSource(), "Object.keys should be filtered correctly");
// Test getOwnPropertyDescriptor.
is(trickyObject.primitiveProp, 32, "primitive prop works");
is(trickyObject.objectProp.foo, 2, "object prop works");
is(typeof trickyObject.callableProp, 'undefined', "filtering works correctly");
is(Object.getOwnPropertyDescriptor(trickyObject, 'primitiveProp').value, 32, "getOwnPropertyDescriptor works");
is(Object.getOwnPropertyDescriptor(trickyObject, 'xoProp'), undefined, "filtering works with getOwnPropertyDescriptor");
// Test defineProperty.
trickyObject.primitiveSetByXray = 'fourty two';
is(trickyObject.primitiveSetByXray, 'fourty two', "Can set primitive correctly over Xray (ready via Xray)");
is(trickyObject.wrappedJSObject.primitiveSetByXray, 'fourty two', "Can set primitive correctly over Xray (ready via Waiver)");
var newContentObject = iwin.eval('new Object({prop: 99, get getterProp() { return 2; }})');
trickyObject.objectSetByXray = newContentObject;
is(trickyObject.objectSetByXray.prop, 99, "Can set object correctly over Xray (ready via Xray)");
is(trickyObject.wrappedJSObject.objectSetByXray.prop, 99, "Can set object correctly over Xray (ready via Waiver)");
checkThrows(function() { trickyObject.rejectedProp = {foo: 33}}, /cross-origin object/,
"Should reject privileged object property definition");
// Test JSON.stringify.
var jsonStr = JSON.stringify(newContentObject);
ok(/prop/.test(jsonStr), "JSON stringification should work: " + jsonStr);
// Test deletion.
delete newContentObject.prop;
ok(!newContentObject.hasOwnProperty('prop'), "Deletion should work");
ok(!newContentObject.wrappedJSObject.hasOwnProperty('prop'), "Deletion should forward");
delete newContentObject.getterProp;
ok(newContentObject.wrappedJSObject.hasOwnProperty('getterProp'), "Deletion be no-op for filtered property");
// We should be able to overwrite an existing accessor prop and convert it
// to a value prop.
is(trickyObject.wrappedJSObject.getterSetterProp, 3, "Underlying object has getter");
is(trickyObject.getterSetterProp, undefined, "Filtering properly over Xray");
trickyObject.getterSetterProp = 'redefined';
is(trickyObject.getterSetterProp, 'redefined', "Redefinition works");
is(trickyObject.wrappedJSObject.getterSetterProp, 'redefined', "Redefinition forwards");
// We should NOT be able to overwrite an existing non-configurable accessor
// prop, though.
is(trickyObject.wrappedJSObject.nonConfigurableGetterSetterProp, 5,
"Underlying object has getter");
is(trickyObject.nonConfigurableGetterSetterProp, undefined,
"Filtering properly over Xray here too");
is((trickyObject.nonConfigurableGetterSetterProp = 'redefined'), 'redefined',
"Assigning to non-configurable prop should fail silently in non-strict mode");
checkThrows(function() {
"use strict";
trickyObject.nonConfigurableGetterSetterProp = 'redefined';
}, /config/, "Should throw when redefining non-configurable prop in strict mode");
is(trickyObject.nonConfigurableGetterSetterProp, undefined,
"Redefinition should have failed");
is(trickyObject.wrappedJSObject.nonConfigurableGetterSetterProp, 5,
"Redefinition really should have failed");
checkThrows(function() { trickyObject.hasOwnProperty = 33; }, /shadow/,
"Should reject shadowing of pre-existing inherited properties over Xrays");
checkThrows(function() { Object.defineProperty(trickyObject, 'rejectedProp', { get: function() {}}); },
/accessor property/, "Should reject accessor property definition");
}
function testTypedArrays() {
// We don't invoke testXray with %TypedArray%, because that function isn't
// set up to deal with "anonymous" dependent classes (that is, classes not
// visible as a global property, which %TypedArray% is not), and fixing it
// up is more trouble than it's worth.
var typedArrayProto = Object.getPrototypeOf(Int8Array.prototype);
var desiredInheritedProps = Object.getOwnPropertyNames(typedArrayProto).sort();
var inheritedProps =
filterOut(desiredInheritedProps, ["BYTES_PER_ELEMENT", "constructor"]);
var inheritedCallables =
inheritedProps.filter(name => (propertyIsGetter(typedArrayProto, name) ||
typeof typedArrayProto[name] === "function") &&
name !== "constructor");
for (var c of typedArrayClasses) {
var t = new iwin[c](10);
checkThrows(function() { t[2]; }, /performant/, "direct property-wise reading of typed arrays forbidden over Xrays");
checkThrows(function() { t[2] = 3; }, /performant/, "direct property-wise writing of typed arrays forbidden over Xrays");
var wesb = new Cu.Sandbox([iwin], {isWebExtensionContentScript: true});
wesb.t = t;
wesb.eval('t[2] = 3');
is(wesb.eval('t.wrappedJSObject[2]'), 3, "direct property-wise writing of typed arrays allowed for WebExtension content scripts");
is(wesb.eval('t[2]'), 3, "direct property-wise reading and writing of typed arrays allowed for WebExtensions content scripts");
t.wrappedJSObject[2] = 3;
is(t.wrappedJSObject[2], 3, "accessing elements over waivers works");
t.wrappedJSObject.expando = 'hi';
is(t.wrappedJSObject.expando, 'hi', "access expandos over waivers works");
is(Cu.cloneInto(t, window)[2], 3, "cloneInto works");
is(Cu.cloneInto(t, window).expando, undefined, "cloneInto does not copy expandos");
is(Object.getOwnPropertyNames(t).sort().toSource(),
'["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]',
"Only indexed properties visible over Xrays");
Object.defineProperty(t.wrappedJSObject, 'length', {value: 42});
is(t.wrappedJSObject.length, 42, "Set tricky expando")
is(t.length, 10, "Length accessor works over Xrays")
is(t.byteLength, t.length * window[c].prototype.BYTES_PER_ELEMENT, "byteLength accessor works over Xrays")
// Can create TypedArray from content ArrayBuffer
var buffer = new iwin.ArrayBuffer(8);
eval(`new ${c}(buffer);`);
var xray = new iwin[c](0);
var xrayTypedArrayProto = Object.getPrototypeOf(Object.getPrototypeOf(xray));
testProtoCallables(inheritedCallables, new iwin[c](0), xrayTypedArrayProto, typedArrayProto);
// When testing iterators, make sure to do so from inside our web
// extension sandbox, since from chrome we can't poke their indices. Note
// that we have to actually recreate our functions that touch typed array
// indices inside the sandbox, not just export them, because otherwise
// they'll just run with our principal anyway.
//
// But we do want to export is(), since we want ours called.
wesb.eval(arraysEqualSource);
wesb.eval(testArrayIteratorsSource);
Cu.exportFunction(is, wesb,
{ defineAs: "is" });
wesb.eval('testArrayIterators(t, [0, 0, 3, 0, 0, 0, 0, 0, 0, 0])');
}
}
function testErrorObjects() {
// We only invoke testXray with Error, because that function isn't set up
// to deal with dependent classes and fixing it up is more trouble than
// it's worth.
testXray('Error', new iwin.Error('some error message'), new iwin.Error());
// Make sure that the dependent classes have their prototypes set up correctly.
for (let c of errorObjectClasses.filter(x => x != "Error")) {
var e = new iwin[c]('some message');
is(Object.getPrototypeOf(e).name, c, "Prototype has correct name");
is(Object.getPrototypeOf(Object.getPrototypeOf(e)), iwin.Error.prototype, "Dependent prototype set up correctly");
is(e.name, c, "Exception name inherited correctly");
function testProperty(name, criterion, goodReplacement, faultyReplacement) {
ok(criterion(e[name]), name + " property is correct: " + e[name]);
e.wrappedJSObject[name] = goodReplacement;
is(e[name], goodReplacement, name + " property ok after replacement: " + goodReplacement);
e.wrappedJSObject[name] = faultyReplacement;
is(e[name], name == 'message' ? "" : undefined, name + " property skipped after suspicious replacement");
}
testProperty('message', x => x == 'some message', 'some other message', 42);
testProperty('fileName', x => x == '', 'otherFilename.html', new iwin.Object());
testProperty('columnNumber', x => x == 1, 99, 99.5);
testProperty('lineNumber', x => x == 0, 50, 'foo');
// Note - an Exception newed via Xrays is going to have an empty stack given the
// current semantics and implementation. This tests the current behavior, but that
// may change in bug 1036527 or similar.
//
// Furthermore, xrays should always return an error's original stack, and
// not overwrite it.
var stack = e.stack;
ok(/^\s*$/.test(stack), "stack property should be correct");
e.wrappedJSObject.stack = "not a stack";
is(e.stack, stack, "Xrays should never get an overwritten stack property.");
}
}
function testRegExp() {
// RegExp statics are very weird, and in particular RegExp has static
// properties that have to do with the last regexp execution in the global.
// Xraying those makes no sense, so we just skip constructor properties for
// RegExp xrays.
// RegExp[@@species] is affected by above skip, but we don't fix it until
// compelling use-case appears, as supporting RegExp[@@species] while
// skipping other static properties makes things complicated.
let ctorPropsToSkip = ["input", "lastMatch", "lastParen",
"leftContext", "rightContext", "$1", "$2", "$3",
"$4", "$5", "$6", "$7", "$8", "$9", "$_", "$&",
"$+", "$`", "$'", Symbol.species];
testXray('RegExp', new iwin.RegExp('foo'), new iwin.RegExp(), [],
ctorPropsToSkip);
// Test the self-hosted |flags| property, toString, and toSource.
for (var flags of ["", "g", "i", "m", "y", "gimy"]) {
var re = new iwin.RegExp("foo", flags);
is(re.flags, re.wrappedJSObject.flags, "Results match");
isnot(re.toString, Cu.unwaiveXrays(re.wrappedJSObject.toString), "Different function identities");
is(Cu.getGlobalForObject(re.toString), window, "Xray global is correct");
is(Cu.getGlobalForObject(re.wrappedJSObject.toString), iwin, "Underlying global is correct");
is(re.toString(), re.wrappedJSObject.toString(), "Results match");
isnot(re.toSource, Cu.unwaiveXrays(re.wrappedJSObject.toSource), "Different function identities");
is(Cu.getGlobalForObject(re.toSource), window, "Xray global is correct");
is(Cu.getGlobalForObject(re.wrappedJSObject.toSource), iwin, "Underlying global is correct");
is(re.toSource(), re.wrappedJSObject.toSource(), "Results match");
// Test with modified flags accessors
iwin.eval(`
var props = ["global", "ignoreCase", "multiline", "sticky", "source", "unicode"];
var origDescs = {};
for (var prop of props) {
origDescs[prop] = Object.getOwnPropertyDescriptor(RegExp.prototype, prop);
Object.defineProperty(RegExp.prototype, prop, {
get: function() {
throw new Error("modified accessor is called");
}
});
}
`);
try {
is(re.flags, flags, "Unmodified flags accessors are called");
is(re.toString(), "/foo/" + flags, "Unmodified flags and source accessors are called");
is(re.toSource(), "/foo/" + flags, "Unmodified flags and source accessors are called");
} finally {
iwin.eval(`
for (var prop of props) {
Object.defineProperty(RegExp.prototype, prop, origDescs[prop]);
}
`);
}
}
}
// Note: this is a small set of basic tests. More in-depth tests are located
// in test_promise_xrays.html.
function testPromise() {
testXray('Promise', new iwin.Promise(function(){}), new iwin.Promise(function(){}));
// Test catch and then.
var pr = new iwin.Promise(function(){});
isnot(pr.catch, Cu.unwaiveXrays(pr.wrappedJSObject.catch), "Different function identities");
is(Cu.getGlobalForObject(pr.catch), window, "Xray global is correct");
is(Cu.getGlobalForObject(pr.wrappedJSObject.catch), iwin, "Underlying global is correct");
isnot(pr.then, Cu.unwaiveXrays(pr.wrappedJSObject.then), "Different function identities");
is(Cu.getGlobalForObject(pr.then), window, "Xray global is correct");
is(Cu.getGlobalForObject(pr.wrappedJSObject.then), iwin, "Underlying global is correct");
}
function testArrayBuffer() {
let constructors = ['ArrayBuffer'];
if (!isReleaseOrBeta) {
constructors.push('SharedArrayBuffer');
}
for (const c of constructors) {
testXray(c, new iwin[c](0), new iwin[c](12));
var t = new iwin[c](12);
is(t.byteLength, 12, `${c} byteLength is correct`);
is(t.slice(4).byteLength, 8, `${c} byteLength is correct after slicing`);
is(Cu.getGlobalForObject(t.slice(4)), iwin, "Slice results lives in the target compartment");
is(Object.getPrototypeOf(t.slice(4)), iwin[c].prototype, "Slice results proto lives in target compartment")
// SharedArrayBuffer does not have static slice method
if (c === 'ArrayBuffer') {
is(ArrayBuffer.slice(t, 4).byteLength, 8, `${c}.slice (deprecated) works`);
}
var i32Array = new Int32Array(t);
// i32Array is going to be created in the buffer's target compartment,
// but usually this is unobservable, because the proto is set to
// the current compartment's prototype.
// However Xrays ignore the object's proto and claim its proto is
// the default proto for that class in the relevant compartment,
// so see through this proto hack.
todo_is(Object.getPrototypeOf(i32Array), Int32Array.prototype, "Int32Array has correct proto");
is(i32Array.length, 3, `Int32Array created from Xray ${c} has the correct length`);
is(i32Array.buffer, t, "Int32Array has the correct buffer that we passed in");
i32Array = new iwin.Int32Array(t);
is(Object.getPrototypeOf(i32Array), iwin.Int32Array.prototype, "Xray Int32Array has correct proto");
is(i32Array.length, 3, `Xray Int32Array created from Xray ${c} has the correct length`);
is(i32Array.buffer, t, "Xray Int32Array has the correct buffer that we passed in");
t = (new iwin.Int32Array(2)).buffer;
is(t.byteLength, 8, `Can access ${c} returned by buffer property`);
}
}
]]>
</script>
<iframe id="ifr" onload="go();" src="http://example.org/tests/js/xpconnect/tests/mochitest/file_empty.html" />
</window>
|
