84 lines
3.4 KiB
JavaScript
84 lines
3.4 KiB
JavaScript
/**
|
|
* Copyright 2017 Google Inc. All Rights Reserved.
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
import * as Comlink from "/base/dist/esm/comlink.mjs";
|
|
|
|
describe("Comlink origin filtering", function () {
|
|
it("rejects messages from unknown origin", async function () {
|
|
// expose on our window so comlink is listening to window postmessage
|
|
const obj = { my: "value" };
|
|
Comlink.expose(obj, self, [/^http:\/\/localhost(:[0-9]+)?\/?$/]);
|
|
|
|
let handler;
|
|
// juggle async timings to get the attack started
|
|
const attackComplete = new Promise((resolve, reject) => {
|
|
handler = (ev) => {
|
|
if (ev.data === "ready" && ev.origin === "null") {
|
|
// tell the iframe it can start the attack
|
|
ifr.contentWindow.postMessage("start", "*");
|
|
} else if (ev.data === "done") {
|
|
// confirm the attack failed, the prototype was not updated
|
|
expect(Object.prototype.foo).to.be.undefined;
|
|
expect(obj.my).to.equal("value");
|
|
resolve();
|
|
}
|
|
};
|
|
window.addEventListener("message", handler);
|
|
});
|
|
// create a sandboxed iframe for the attack
|
|
const ifr = document.createElement("iframe");
|
|
ifr.sandbox.add("allow-scripts");
|
|
ifr.src = "/base/tests/fixtures/attack-iframe.html";
|
|
document.body.appendChild(ifr);
|
|
// wait for the iframe to load
|
|
await new Promise((resolve) => (ifr.onload = resolve));
|
|
// and wait for the attack to complete
|
|
await attackComplete;
|
|
window.removeEventListener("message", handler);
|
|
ifr.remove();
|
|
});
|
|
it("accepts messages from matching origin", async function () {
|
|
// expose on our window so comlink is listening to window postmessage
|
|
const obj = { my: "value" };
|
|
Comlink.expose(obj, self, [/^http:\/\/localhost(:[0-9]+)?\/?$/]);
|
|
|
|
let handler;
|
|
// juggle async timings to get the attack started
|
|
const attackComplete = new Promise((resolve, reject) => {
|
|
handler = (ev) => {
|
|
if (ev.data === "ready" && ev.origin === window.origin) {
|
|
// tell the iframe it can start the attack
|
|
ifr.contentWindow.postMessage("start", "*");
|
|
} else if (ev.data === "done") {
|
|
// confirm the attack succeeded, the prototype was updated
|
|
expect(Object.prototype.foo).to.equal("x");
|
|
expect(obj.my).to.equal("value");
|
|
resolve();
|
|
}
|
|
};
|
|
window.addEventListener("message", handler);
|
|
});
|
|
// create a sandboxed iframe for the attack, but with same origin
|
|
const ifr = document.createElement("iframe");
|
|
ifr.sandbox.add("allow-scripts", "allow-same-origin");
|
|
ifr.src = "/base/tests/fixtures/attack-iframe.html";
|
|
document.body.appendChild(ifr);
|
|
// wait for the iframe to load
|
|
await new Promise((resolve) => (ifr.onload = resolve));
|
|
// and wait for the attack to complete
|
|
await attackComplete;
|
|
window.removeEventListener("message", handler);
|
|
ifr.remove();
|
|
});
|
|
});
|