/
cross-realm-filtering.js
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cross-realm-filtering.js
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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var realms = [Realm.current(), Realm.create()];
// Check stack trace filtering across security contexts.
var thrower_script =
"(function () { Realm.eval(Realm.current(), 'throw Error()') })";
Realm.shared = {
thrower_0: Realm.eval(realms[0], thrower_script),
thrower_1: Realm.eval(realms[1], thrower_script),
};
var script = " \
Error.prepareStackTrace = function(a, b) { return b; }; \
try { \
Realm.shared.thrower_0(); \
} catch (e) { \
Realm.shared.error_0 = e.stack; \
} \
try { \
Realm.shared.thrower_1(); \
} catch (e) { \
Realm.shared.error_1 = e.stack; \
} \
";
function assertNotIn(thrower, error) {
for (var i = 0; i < error.length; i++) {
assertFalse(false === error[i].getFunction());
}
}
Realm.eval(realms[1], script);
assertSame(2, Realm.shared.error_0.length);
assertSame(3, Realm.shared.error_1.length);
assertTrue(Realm.shared.thrower_1 === Realm.shared.error_1[1].getFunction());
assertNotIn(Realm.shared.thrower_0, Realm.shared.error_0);
assertNotIn(Realm.shared.thrower_0, Realm.shared.error_1);
Realm.eval(realms[0], script);
assertSame(4, Realm.shared.error_0.length);
assertSame(3, Realm.shared.error_1.length);
assertTrue(Realm.shared.thrower_0 === Realm.shared.error_0[1].getFunction());
assertNotIn(Realm.shared.thrower_1, Realm.shared.error_0);
assertNotIn(Realm.shared.thrower_1, Realm.shared.error_1);
// Check .caller filtering across security contexts.
var caller_script = "(function (f) { f(); })";
Realm.shared = {
caller_0 : Realm.eval(realms[0], caller_script),
caller_1 : Realm.eval(realms[1], caller_script),
}
script = " \
function f_0() { Realm.shared.result_0 = arguments.callee.caller; }; \
function f_1() { Realm.shared.result_1 = arguments.callee.caller; }; \
Realm.shared.caller_0(f_0); \
Realm.shared.caller_1(f_1); \
";
Realm.eval(realms[1], script);
assertSame(null, Realm.shared.result_0);
assertSame(Realm.shared.caller_1, Realm.shared.result_1);
Realm.eval(realms[0], script);
assertSame(Realm.shared.caller_0, Realm.shared.result_0);
assertSame(null, Realm.shared.result_1);
// test that do not pollute / leak a function prototype v8/4217
var realmIndex = Realm.create();
var otherObject = Realm.eval(realmIndex, "Object");
var f = Realm.eval(realmIndex, "function f(){}; f");
f.prototype = null;
var o = new f();
var proto = Object.getPrototypeOf(o);
assertFalse(proto === Object.prototype);
assertTrue(proto === otherObject.prototype);
o = Realm.eval(realmIndex, "new f()");
proto = Object.getPrototypeOf(o);
assertFalse(proto === Object.prototype);
assertTrue(proto === otherObject.prototype);
// Check function constructor.
var ctor_script = "Function";
var ctor_a_script =
"(function() { return Function.apply(this, ['return 1;']); })";
var ctor_b_script = "Function.bind(this, 'return 1;')";
var ctor_c_script =
"(function() { return Function.call(this, 'return 1;'); })";
// Also check Promise constructor.
var promise_ctor_script = "Promise";
Realm.shared = {
ctor_0 : Realm.eval(realms[0], ctor_script),
ctor_1 : Realm.eval(realms[1], ctor_script),
ctor_a_0 : Realm.eval(realms[0], ctor_a_script),
ctor_a_1 : Realm.eval(realms[1], ctor_a_script),
ctor_b_0 : Realm.eval(realms[0], ctor_b_script),
ctor_b_1 : Realm.eval(realms[1], ctor_b_script),
ctor_c_0 : Realm.eval(realms[0], ctor_c_script),
ctor_c_1 : Realm.eval(realms[1], ctor_c_script),
promise_ctor_0 : Realm.eval(realms[0], promise_ctor_script),
promise_ctor_1 : Realm.eval(realms[1], promise_ctor_script),
}
var script_0 = " \
var ctor_0 = Realm.shared.ctor_0; \
var promise_ctor_0 = Realm.shared.promise_ctor_0; \
Realm.shared.direct_0 = ctor_0('return 1'); \
Realm.shared.indirect_0 = (function() { return ctor_0('return 1;'); })(); \
Realm.shared.apply_0 = ctor_0.apply(this, ['return 1']); \
Realm.shared.bind_0 = ctor_0.bind(this, 'return 1')(); \
Realm.shared.call_0 = ctor_0.call(this, 'return 1'); \
Realm.shared.proxy_0 = new Proxy(ctor_0, {})('return 1'); \
Realm.shared.reflect_0 = Reflect.apply(ctor_0, this, ['return 1']); \
Realm.shared.a_0 = Realm.shared.ctor_a_0(); \
Realm.shared.b_0 = Realm.shared.ctor_b_0(); \
Realm.shared.c_0 = Realm.shared.ctor_c_0(); \
Realm.shared.p_0 = new promise_ctor_0((res,rej) => res(1)); \
";
script = script_0 + script_0.replace(/_0/g, "_1");
Realm.eval(realms[0], script);
assertSame(1, Realm.shared.direct_0());
assertSame(1, Realm.shared.indirect_0());
assertSame(1, Realm.shared.apply_0());
assertSame(1, Realm.shared.bind_0());
assertSame(1, Realm.shared.call_0());
assertSame(1, Realm.shared.proxy_0());
assertSame(1, Realm.shared.reflect_0());
assertSame(1, Realm.shared.a_0());
assertSame(1, Realm.shared.b_0());
assertSame(1, Realm.shared.c_0());
assertInstanceof(Realm.shared.p_0, Realm.shared.promise_ctor_0);
assertSame(undefined, Realm.shared.direct_1);
assertSame(undefined, Realm.shared.indirect_1);
assertSame(undefined, Realm.shared.apply_1);
assertSame(undefined, Realm.shared.bind_1);
assertSame(undefined, Realm.shared.call_1);
assertSame(undefined, Realm.shared.proxy_1);
assertSame(undefined, Realm.shared.reflect_1);
assertSame(undefined, Realm.shared.a_1);
assertSame(undefined, Realm.shared.b_1);
assertSame(undefined, Realm.shared.c_1);
assertSame(undefined, Realm.shared.p_1);
Realm.eval(realms[1], script);
assertSame(undefined, Realm.shared.direct_0);
assertSame(undefined, Realm.shared.indirect_0);
assertSame(undefined, Realm.shared.apply_0);
assertSame(undefined, Realm.shared.bind_0);
assertSame(undefined, Realm.shared.call_0);
assertSame(undefined, Realm.shared.proxy_0);
assertSame(undefined, Realm.shared.reflect_0);
assertSame(undefined, Realm.shared.a_0);
assertSame(undefined, Realm.shared.b_0);
assertSame(undefined, Realm.shared.c_0);
assertSame(undefined, Realm.shared.p_0);
assertSame(1, Realm.shared.direct_1());
assertSame(1, Realm.shared.indirect_1());
assertSame(1, Realm.shared.apply_1());
assertSame(1, Realm.shared.bind_1());
assertSame(1, Realm.shared.call_1());
assertSame(1, Realm.shared.proxy_1());
assertSame(1, Realm.shared.reflect_1());
assertSame(1, Realm.shared.a_1());
assertSame(1, Realm.shared.b_1());
assertSame(1, Realm.shared.c_1());
assertInstanceof(Realm.shared.p_1, Realm.shared.promise_ctor_1);