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
|
"use strict";
// ExtensionContent.jsm needs to know when it's running from xpcshell,
// to use the right timeout for content scripts executed at document_idle.
ExtensionTestUtils.mockAppInfo();
const server = createHttpServer();
server.registerDirectory("/data/", do_get_file("data"));
const BASE_URL = `http://localhost:${server.identity.primaryPort}/data`;
add_task(async function test_contentscript_private_field_xrays() {
async function contentScript() {
let node = window.document.createElement("div");
class Base {
constructor(o) {
return o;
}
}
class A extends Base {
#x = 5;
static gx(o) {
return o.#x;
}
static sx(o, v) {
o.#x = v;
}
}
browser.test.log(A.toString());
// Stamp node with A's private field.
new A(node);
browser.test.log("stamped");
browser.test.assertEq(
A.gx(node),
5,
"We should be able to see our expando private field"
);
browser.test.log("Read");
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have our private field"
);
browser.test.log("threw");
window.frames[0].document.adoptNode(node);
browser.test.log("adopted");
browser.test.assertEq(
A.gx(node),
5,
"Adoption should not change expando private field"
);
browser.test.log("read");
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Adoption should really not change expandos private fields"
);
browser.test.log("threw2");
// Repeat but now with an object that has a reference from the
// window it's being cloned into.
node = window.document.createElement("div");
// Stamp node with A's private field.
new A(node);
A.sx(node, 6);
browser.test.assertEq(
A.gx(node),
6,
"We should be able to see our expando (2)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have exxpando. (2)"
);
window.frames[0].wrappedJSObject.incoming = node.wrappedJSObject;
window.frames[0].document.adoptNode(node);
browser.test.assertEq(
A.gx(node),
6,
"We should be able to see our expando (3)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have exxpando. (3)"
);
// Repeat once more, now with an expando that refers to the object itself
node = window.document.createElement("div");
new A(node);
A.sx(node, node);
browser.test.assertEq(
A.gx(node),
node,
"We should be able to see our self-referential expando (4)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Underlying object should not have exxpando. (4)"
);
window.frames[0].document.adoptNode(node);
browser.test.assertEq(
A.gx(node),
node,
"Adoption should not change our self-referential expando (4)"
);
browser.test.assertThrows(
() => A.gx(node.wrappedJSObject),
/can't access private field or method/,
"Adoption should not change underlying object. (4)"
);
// And test what happens if we now set document.domain and cause
// wrapper remapping.
let doc = window.frames[0].document;
// eslint-disable-next-line no-self-assign
doc.domain = doc.domain;
browser.test.notifyPass("privateFieldXRayAdoption");
}
let extension = ExtensionTestUtils.loadExtension({
manifest: {
content_scripts: [
{
matches: ["http://*/*/file_toplevel.html"],
js: ["content_script.js"],
},
],
},
files: {
"content_script.js": contentScript,
},
});
await extension.startup();
let contentPage = await ExtensionTestUtils.loadContentPage(
`${BASE_URL}/file_toplevel.html`
);
await extension.awaitFinish("privateFieldXRayAdoption");
await contentPage.close();
await extension.unload();
});
|
