File: test_safe-getter.js

package info (click to toggle)
firefox 147.0.3-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 4,683,320 kB
  • sloc: cpp: 7,607,359; javascript: 6,533,295; ansic: 3,775,223; python: 1,415,500; xml: 634,561; asm: 438,949; java: 186,241; sh: 62,752; makefile: 18,079; objc: 13,092; perl: 12,808; yacc: 4,583; cs: 3,846; pascal: 3,448; lex: 1,720; ruby: 1,003; php: 436; lisp: 258; awk: 247; sql: 66; sed: 54; csh: 10; exp: 6
file content (54 lines) | stat: -rw-r--r-- 1,657 bytes parent folder | download | duplicates (3)
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
/* eslint-disable strict */
function run_test() {
  Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
  registerCleanupFunction(() => {
    Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
  });
  const { addDebuggerToGlobal } = ChromeUtils.importESModule(
    "resource://gre/modules/jsdebugger.sys.mjs"
  );
  addDebuggerToGlobal(globalThis);
  const g = createTestGlobal("test", {
    chrome: true,
  });
  const dbg = new Debugger();
  const gw = dbg.addDebuggee(g);

  g.eval(`
    // This is not a CCW.
    Object.defineProperty(this, "bar", {
      get: function() { return "bar"; },
      configurable: true,
      enumerable: true
    });

    const { XPCOMUtils } = ChromeUtils.importESModule(
      "resource://gre/modules/XPCOMUtils.sys.mjs"
    );

    // This is a CCW.
    XPCOMUtils.defineLazyScriptGetter(
      this, "foo", "chrome://global/content/viewZoomOverlay.js");
  `);

  // Neither scripted getter should be considered safe.
  assert(!DevToolsUtils.hasSafeGetter(gw.getOwnPropertyDescriptor("bar")));
  assert(!DevToolsUtils.hasSafeGetter(gw.getOwnPropertyDescriptor("foo")));

  // Create an object in a less privileged sandbox.
  const obj = gw.makeDebuggeeValue(
    Cu.waiveXrays(
      Cu.Sandbox(null).eval(`
    Object.defineProperty({}, "bar", {
      get: function() { return "bar"; },
      configurable: true,
      enumerable: true
    });
  `)
    )
  );

  // After waiving Xrays, the object has 2 wrappers. Both must be removed
  // in order to detect that the getter is not safe.
  assert(!DevToolsUtils.hasSafeGetter(obj.getOwnPropertyDescriptor("bar")));
}