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|
"use strict";
Services.prefs.setBoolPref("extensions.manifestV3.enabled", true);
const server = createHttpServer({ hosts: ["example.com"] });
server.registerPathHandler("/dummy", (request, response) => {
response.setStatusLine(request.httpVersion, 200, "OK");
response.setHeader("Content-Type", "text/html", false);
response.write("<!DOCTYPE html><html></html>");
});
server.registerPathHandler("/worker.js", (request, response) => {
response.setStatusLine(request.httpVersion, 200, "OK");
response.setHeader("Content-Type", "application/javascript", false);
response.write("let x = true;");
});
const baseCSP = [];
// Keep in sync with extensions.webextensions.base-content-security-policy
baseCSP[2] = {
"script-src": [
"'unsafe-eval'",
"'wasm-unsafe-eval'",
"'unsafe-inline'",
"blob:",
"filesystem:",
"http://localhost:*",
"http://127.0.0.1:*",
"https://*",
"moz-extension:",
"'self'",
],
};
// Keep in sync with extensions.webextensions.base-content-security-policy.v3
baseCSP[3] = {
"script-src": ["'self'", "'wasm-unsafe-eval'"],
};
/**
* @typedef TestPolicyExpects
* @type {object}
* @param {boolean} workerEvalAllowed
* @param {boolean} workerImportScriptsAllowed
* @param {boolean} workerWasmAllowed
*/
/**
* Tests that content security policies for an add-on are actually applied to *
* documents that belong to it. This tests both the base policies and add-on
* specific policies, and ensures that the parsed policies applied to the
* document's principal match what was specified in the policy string.
*
* @param {object} options
* @param {number} [options.manifest_version]
* @param {object} [options.customCSP]
* @param {TestPolicyExpects} options.expects
*/
async function testPolicy({
manifest_version = 2,
customCSP = null,
expects = {},
}) {
info(
`Enter tests for extension CSP with ${JSON.stringify({
manifest_version,
customCSP,
})}`
);
let baseURL;
let addonCSP = {
"script-src": ["'self'"],
};
if (manifest_version < 3) {
addonCSP["script-src"].push("'wasm-unsafe-eval'");
}
let content_security_policy = null;
if (customCSP) {
for (let key of Object.keys(customCSP)) {
addonCSP[key] = customCSP[key].split(/\s+/);
}
content_security_policy = Object.keys(customCSP)
.map(key => `${key} ${customCSP[key]}`)
.join("; ");
}
function checkSource(name, policy, expected) {
// fallback to script-src when comparing worker-src if policy does not include worker-src
let policySrc =
name != "worker-src" || policy[name]
? policy[name]
: policy["script-src"];
equal(
JSON.stringify(policySrc.sort()),
JSON.stringify(expected[name].sort()),
`Expected value for ${name}`
);
}
function checkCSP(csp, location) {
let policies = csp["csp-policies"];
info(`Base policy for ${location}`);
let base = baseCSP[manifest_version];
equal(policies[0]["report-only"], false, "Policy is not report-only");
for (let key in base) {
checkSource(key, policies[0], base);
}
info(`Add-on policy for ${location}`);
equal(policies[1]["report-only"], false, "Policy is not report-only");
for (let key in addonCSP) {
checkSource(key, policies[1], addonCSP);
}
}
function background() {
browser.test.sendMessage(
"base-url",
browser.runtime.getURL("").replace(/\/$/, "")
);
browser.test.sendMessage("background-csp", window.getCsp());
}
function tabScript() {
browser.test.sendMessage("tab-csp", window.getCsp());
const worker = new Worker("worker.js");
worker.onmessage = event => {
browser.test.sendMessage("worker-csp", event.data);
};
worker.postMessage({});
}
function testWorker(port) {
this.onmessage = () => {
let importScriptsAllowed;
let evalAllowed;
let wasmAllowed;
try {
eval("let y = true;"); // eslint-disable-line no-eval
evalAllowed = true;
} catch (e) {
evalAllowed = false;
}
try {
new WebAssembly.Module(
new Uint8Array([0, 0x61, 0x73, 0x6d, 0x1, 0, 0, 0])
);
wasmAllowed = true;
} catch (e) {
wasmAllowed = false;
}
try {
// eslint-disable-next-line no-undef
importScripts(`http://127.0.0.1:${port}/worker.js`);
importScriptsAllowed = true;
} catch (e) {
importScriptsAllowed = false;
}
postMessage({ evalAllowed, importScriptsAllowed, wasmAllowed });
};
}
let web_accessible_resources = ["content.html", "tab.html"];
if (manifest_version == 3) {
let extension_pages = content_security_policy;
content_security_policy = {
extension_pages,
};
let resources = web_accessible_resources;
web_accessible_resources = [
{ resources, matches: ["http://example.com/*"] },
];
}
let extension = ExtensionTestUtils.loadExtension({
background,
files: {
"tab.html": `<html><head><meta charset="utf-8">
<script src="tab.js"></${"script"}></head></html>`,
"tab.js": tabScript,
"content.html": `<html><head><meta charset="utf-8"></head></html>`,
"worker.js": `(${testWorker})(${server.identity.primaryPort})`,
},
manifest: {
manifest_version,
content_security_policy,
web_accessible_resources,
},
});
function frameScript() {
// eslint-disable-next-line mozilla/balanced-listeners
addEventListener(
"DOMWindowCreated",
event => {
let win = event.target.ownerGlobal;
function getCsp() {
let { cspJSON } = win.document;
return win.wrappedJSObject.JSON.parse(cspJSON);
}
Cu.exportFunction(getCsp, win, { defineAs: "getCsp" });
},
true
);
}
let frameScriptURL = `data:,(${encodeURI(frameScript)}).call(this)`;
Services.mm.loadFrameScript(frameScriptURL, true, true);
info(`Testing CSP for policy: ${JSON.stringify(content_security_policy)}`);
await extension.startup();
baseURL = await extension.awaitMessage("base-url");
let tabPage = await ExtensionTestUtils.loadContentPage(
`${baseURL}/tab.html`,
{ extension }
);
let contentPage = await ExtensionTestUtils.loadContentPage(
"http://example.com/dummy"
);
let contentCSP = await contentPage.spawn(
[`${baseURL}/content.html`],
async src => {
let doc = this.content.document;
let frame = doc.createElement("iframe");
frame.src = src;
doc.body.appendChild(frame);
await new Promise(resolve => {
frame.onload = resolve;
});
return frame.contentWindow.wrappedJSObject.getCsp();
}
);
let backgroundCSP = await extension.awaitMessage("background-csp");
checkCSP(backgroundCSP, "background page");
let tabCSP = await extension.awaitMessage("tab-csp");
checkCSP(tabCSP, "tab page");
checkCSP(contentCSP, "content frame");
let workerCSP = await extension.awaitMessage("worker-csp");
equal(
workerCSP.importScriptsAllowed,
expects.workerImportAllowed,
"worker importScript"
);
equal(workerCSP.evalAllowed, expects.workerEvalAllowed, "worker eval");
equal(workerCSP.wasmAllowed, expects.workerWasmAllowed, "worker wasm");
await contentPage.close();
await tabPage.close();
await extension.unload();
Services.mm.removeDelayedFrameScript(frameScriptURL);
}
add_task(async function testCSP() {
await testPolicy({
manifest_version: 2,
customCSP: null,
expects: {
workerEvalAllowed: false,
workerImportAllowed: false,
workerWasmAllowed: true,
},
});
let hash =
"'sha256-NjZhMDQ1YjQ1MjEwMmM1OWQ4NDBlYzA5N2Q1OWQ5NDY3ZTEzYTNmMzRmNjQ5NGU1MzlmZmQzMmMxYmIzNWYxOCAgLQo='";
await testPolicy({
manifest_version: 2,
customCSP: {
"script-src": `'self' https://*.example.com 'unsafe-eval' ${hash}`,
},
expects: {
workerEvalAllowed: true,
workerImportAllowed: false,
workerWasmAllowed: true,
},
});
await testPolicy({
manifest_version: 2,
customCSP: {
"script-src": `'self'`,
},
expects: {
workerEvalAllowed: false,
workerImportAllowed: false,
workerWasmAllowed: true,
},
});
await testPolicy({
manifest_version: 3,
customCSP: {
"script-src": `'self' ${hash}`,
"worker-src": `'self'`,
},
expects: {
workerEvalAllowed: false,
workerImportAllowed: false,
workerWasmAllowed: false,
},
});
await testPolicy({
manifest_version: 3,
customCSP: {
"script-src": `'self'`,
"worker-src": `'self'`,
},
expects: {
workerEvalAllowed: false,
workerImportAllowed: false,
workerWasmAllowed: false,
},
});
await testPolicy({
manifest_version: 3,
customCSP: {
"script-src": `'self' 'wasm-unsafe-eval'`,
"worker-src": `'self' 'wasm-unsafe-eval'`,
},
expects: {
workerEvalAllowed: false,
workerImportAllowed: false,
workerWasmAllowed: true,
},
});
});
|
