forked from mirrors/gecko-dev
69dfb519c2
Use 'globalThis' instead of 'this' when trying to attach a debugger to the current global to avoid subtle footguns with the varied definitions of 'this'. The debugger interface needs a true GlobalObject so this is much clearer. In particular, this is a problem in test_nativewrappers.js when the test runs in strict mode since the 'this' in the test function is no long implicitly the global. Differential Revision: https://phabricator.services.mozilla.com/D157544
53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
/* eslint-disable strict */
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function run_test() {
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Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
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registerCleanupFunction(() => {
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Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
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});
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const { addDebuggerToGlobal } = ChromeUtils.import(
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"resource://gre/modules/jsdebugger.jsm"
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);
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addDebuggerToGlobal(globalThis);
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const g = createTestGlobal("test", {
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wantGlobalProperties: ["ChromeUtils"],
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});
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const dbg = new Debugger();
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const gw = dbg.addDebuggee(g);
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g.eval(`
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// This is not a CCW.
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Object.defineProperty(this, "bar", {
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get: function() { return "bar"; },
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configurable: true,
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enumerable: true
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});
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const { XPCOMUtils } = ChromeUtils.importESModule(
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"resource://gre/modules/XPCOMUtils.sys.mjs"
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);
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// This is a CCW.
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XPCOMUtils.defineLazyGetter(this, "foo", function() { return "foo"; });
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`);
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// Neither scripted getter should be considered safe.
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assert(!DevToolsUtils.hasSafeGetter(gw.getOwnPropertyDescriptor("bar")));
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assert(!DevToolsUtils.hasSafeGetter(gw.getOwnPropertyDescriptor("foo")));
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// Create an object in a less privileged sandbox.
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const obj = gw.makeDebuggeeValue(
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Cu.waiveXrays(
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Cu.Sandbox(null).eval(`
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Object.defineProperty({}, "bar", {
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get: function() { return "bar"; },
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configurable: true,
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enumerable: true
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});
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`)
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)
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);
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// After waiving Xrays, the object has 2 wrappers. Both must be removed
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// in order to detect that the getter is not safe.
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assert(!DevToolsUtils.hasSafeGetter(obj.getOwnPropertyDescriptor("bar")));
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}
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