michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* See https://bugzilla.mozilla.org/show_bug.cgi?id=813901 */
michael@0: 
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: // Make sure that we can't inject __exposedProps__ via the proto of a COW-ed object.
michael@0: 
michael@0: function checkThrows(expression, sb, regexp) {
michael@0:   var result = Cu.evalInSandbox('(function() { try { ' + expression + '; return "allowed"; } catch (e) { return e.toString(); }})();', sb);
michael@0:   dump('result: ' + result + '\n\n\n');
michael@0:   do_check_true(!!regexp.exec(result));
michael@0: }
michael@0: 
michael@0: function run_test() {
michael@0: 
michael@0:   var sb = new Cu.Sandbox('http://www.example.org');
michael@0:   sb.obj = {foo: 2};
michael@0:   checkThrows('obj.foo = 3;', sb, /denied/);
michael@0:   Cu.evalInSandbox("var p = {__exposedProps__: {foo: 'rw'}};", sb);
michael@0:   sb.obj.__proto__ = sb.p;
michael@0:   checkThrows('obj.foo = 4;', sb, /__exposedProps__/);
michael@0: }