1 files changed, 485 insertions, 0 deletions
diff --git a/testing/modules/XPCShellContentUtils.sys.mjs b/testing/modules/XPCShellContentUtils.sys.mjs
new file mode 100644
index 0000000000..ca15969065
--- /dev/null
+++ b/testing/modules/XPCShellContentUtils.sys.mjs
@@ -0,0 +1,485 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const { ExtensionUtils } = ChromeUtils.import(
+  "resource://gre/modules/ExtensionUtils.jsm"
+);
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+// Windowless browsers can create documents that rely on XUL Custom Elements:
+ChromeUtils.import("resource://gre/modules/CustomElementsListener.jsm");
+
+// Need to import ActorManagerParent.sys.mjs so that the actors are initialized
+// before running extension XPCShell tests.
+ChromeUtils.importESModule("resource://gre/modules/ActorManagerParent.sys.mjs");
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  ContentTask: "resource://testing-common/ContentTask.sys.mjs",
+  TestUtils: "resource://testing-common/TestUtils.sys.mjs",
+});
+
+XPCOMUtils.defineLazyModuleGetters(lazy, {
+  HttpServer: "resource://testing-common/httpd.js",
+  MessageChannel: "resource://testing-common/MessageChannel.jsm",
+});
+
+XPCOMUtils.defineLazyServiceGetters(lazy, {
+  proxyService: [
+    "@mozilla.org/network/protocol-proxy-service;1",
+    "nsIProtocolProxyService",
+  ],
+});
+
+const { promiseDocumentLoaded, promiseEvent, promiseObserved } = ExtensionUtils;
+
+var gRemoteContentScripts = Services.appinfo.browserTabsRemoteAutostart;
+const REMOTE_CONTENT_SUBFRAMES = Services.appinfo.fissionAutostart;
+
+function frameScript() {
+  const { MessageChannel } = ChromeUtils.import(
+    "resource://testing-common/MessageChannel.jsm"
+  );
+
+  // We need to make sure that the ExtensionPolicy service has been initialized
+  // as it sets up the observers that inject extension content scripts.
+  Cc["@mozilla.org/addons/policy-service;1"].getService();
+
+  const messageListener = {
+    async receiveMessage({ target, messageName, recipient, data, name }) {
+      /* globals content */
+      let resp = await content.fetch(data.url, data.options);
+      return resp.text();
+    },
+  };
+  MessageChannel.addListener(this, "Test:Fetch", messageListener);
+
+  // eslint-disable-next-line mozilla/balanced-listeners, no-undef
+  addEventListener(
+    "MozHeapMinimize",
+    () => {
+      Services.obs.notifyObservers(null, "memory-pressure", "heap-minimize");
+    },
+    true,
+    true
+  );
+}
+
+let kungFuDeathGrip = new Set();
+function promiseBrowserLoaded(browser, url, redirectUrl) {
+  url = url && Services.io.newURI(url);
+  redirectUrl = redirectUrl && Services.io.newURI(redirectUrl);
+
+  return new Promise(resolve => {
+    const listener = {
+      QueryInterface: ChromeUtils.generateQI([
+        "nsISupportsWeakReference",
+        "nsIWebProgressListener",
+      ]),
+
+      onStateChange(webProgress, request, stateFlags, statusCode) {
+        request.QueryInterface(Ci.nsIChannel);
+
+        let requestURI =
+          request.originalURI ||
+          webProgress.DOMWindow.document.documentURIObject;
+        if (
+          webProgress.isTopLevel &&
+          (url?.equals(requestURI) || redirectUrl?.equals(requestURI)) &&
+          stateFlags & Ci.nsIWebProgressListener.STATE_STOP
+        ) {
+          resolve();
+          kungFuDeathGrip.delete(listener);
+          browser.removeProgressListener(listener);
+        }
+      },
+    };
+
+    // addProgressListener only supports weak references, so we need to
+    // use one. But we also need to make sure it stays alive until we're
+    // done with it, so thunk away a strong reference to keep it alive.
+    kungFuDeathGrip.add(listener);
+    browser.addProgressListener(
+      listener,
+      Ci.nsIWebProgress.NOTIFY_STATE_WINDOW
+    );
+  });
+}
+
+class ContentPage {
+  constructor(
+    remote = gRemoteContentScripts,
+    remoteSubframes = REMOTE_CONTENT_SUBFRAMES,
+    extension = null,
+    privateBrowsing = false,
+    userContextId = undefined
+  ) {
+    this.remote = remote;
+
+    // If an extension has been passed, overwrite remote
+    // with extension.remote to be sure that the ContentPage
+    // will have the same remoteness of the extension.
+    if (extension) {
+      this.remote = extension.remote;
+    }
+
+    this.remoteSubframes = this.remote && remoteSubframes;
+    this.extension = extension;
+    this.privateBrowsing = privateBrowsing;
+    this.userContextId = userContextId;
+
+    this.browserReady = this._initBrowser();
+  }
+
+  async _initBrowser() {
+    let chromeFlags = 0;
+    if (this.remote) {
+      chromeFlags |= Ci.nsIWebBrowserChrome.CHROME_REMOTE_WINDOW;
+    }
+    if (this.remoteSubframes) {
+      chromeFlags |= Ci.nsIWebBrowserChrome.CHROME_FISSION_WINDOW;
+    }
+    if (this.privateBrowsing) {
+      chromeFlags |= Ci.nsIWebBrowserChrome.CHROME_PRIVATE_WINDOW;
+    }
+    this.windowlessBrowser = Services.appShell.createWindowlessBrowser(
+      true,
+      chromeFlags
+    );
+
+    let system = Services.scriptSecurityManager.getSystemPrincipal();
+
+    let chromeShell = this.windowlessBrowser.docShell.QueryInterface(
+      Ci.nsIWebNavigation
+    );
+
+    chromeShell.createAboutBlankContentViewer(system, system);
+    this.windowlessBrowser.browsingContext.useGlobalHistory = false;
+    let loadURIOptions = {
+      triggeringPrincipal: system,
+    };
+    chromeShell.loadURI(
+      "chrome://extensions/content/dummy.xhtml",
+      loadURIOptions
+    );
+
+    await promiseObserved(
+      "chrome-document-global-created",
+      win => win.document == chromeShell.document
+    );
+
+    let chromeDoc = await promiseDocumentLoaded(chromeShell.document);
+
+    let browser = chromeDoc.createXULElement("browser");
+    browser.setAttribute("type", "content");
+    browser.setAttribute("disableglobalhistory", "true");
+    browser.setAttribute("messagemanagergroup", "webext-browsers");
+    browser.setAttribute("nodefaultsrc", "true");
+    if (this.userContextId) {
+      browser.setAttribute("usercontextid", this.userContextId);
+    }
+
+    if (this.extension?.remote) {
+      browser.setAttribute("remote", "true");
+      browser.setAttribute("remoteType", "extension");
+    }
+
+    // Ensure that the extension is loaded into the correct
+    // BrowsingContextGroupID by default.
+    if (this.extension) {
+      browser.setAttribute(
+        "initialBrowsingContextGroupId",
+        this.extension.browsingContextGroupId
+      );
+    }
+
+    let awaitFrameLoader = Promise.resolve();
+    if (this.remote) {
+      awaitFrameLoader = promiseEvent(browser, "XULFrameLoaderCreated");
+      browser.setAttribute("remote", "true");
+
+      browser.setAttribute("maychangeremoteness", "true");
+      browser.addEventListener(
+        "DidChangeBrowserRemoteness",
+        this.didChangeBrowserRemoteness.bind(this)
+      );
+    }
+
+    chromeDoc.documentElement.appendChild(browser);
+
+    // Forcibly flush layout so that we get a pres shell soon enough, see
+    // bug 1274775.
+    browser.getBoundingClientRect();
+
+    await awaitFrameLoader;
+
+    this.browser = browser;
+
+    this.loadFrameScript(frameScript);
+
+    return browser;
+  }
+
+  get browsingContext() {
+    return this.browser.browsingContext;
+  }
+
+  sendMessage(msg, data) {
+    return lazy.MessageChannel.sendMessage(
+      this.browser.messageManager,
+      msg,
+      data
+    );
+  }
+
+  loadFrameScript(func) {
+    let frameScript = `data:text/javascript,(${encodeURI(func)}).call(this)`;
+    this.browser.messageManager.loadFrameScript(frameScript, true, true);
+  }
+
+  addFrameScriptHelper(func) {
+    let frameScript = `data:text/javascript,${encodeURI(func)}`;
+    this.browser.messageManager.loadFrameScript(frameScript, false, true);
+  }
+
+  didChangeBrowserRemoteness(event) {
+    // XXX: Tests can load their own additional frame scripts, so we may need to
+    // track all scripts that have been loaded, and reload them here?
+    this.loadFrameScript(frameScript);
+  }
+
+  async loadURL(url, redirectUrl = undefined) {
+    await this.browserReady;
+
+    this.browser.loadURI(url, {
+      triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
+    });
+    return promiseBrowserLoaded(this.browser, url, redirectUrl);
+  }
+
+  async fetch(url, options) {
+    return this.sendMessage("Test:Fetch", { url, options });
+  }
+
+  spawn(params, task) {
+    return lazy.ContentTask.spawn(this.browser, params, task);
+  }
+
+  async close() {
+    await this.browserReady;
+
+    let { messageManager } = this.browser;
+
+    this.browser.removeEventListener(
+      "DidChangeBrowserRemoteness",
+      this.didChangeBrowserRemoteness.bind(this)
+    );
+    this.browser = null;
+
+    this.windowlessBrowser.close();
+    this.windowlessBrowser = null;
+
+    await lazy.TestUtils.topicObserved(
+      "message-manager-disconnect",
+      subject => subject === messageManager
+    );
+  }
+}
+
+export var XPCShellContentUtils = {
+  currentScope: null,
+  fetchScopes: new Map(),
+
+  initCommon(scope) {
+    this.currentScope = scope;
+
+    // We need to load at least one frame script into every message
+    // manager to ensure that the scriptable wrapper for its global gets
+    // created before we try to access it externally. If we don't, we
+    // fail sanity checks on debug builds the first time we try to
+    // create a wrapper, because we should never have a global without a
+    // cached wrapper.
+    Services.mm.loadFrameScript("data:text/javascript,//", true, true);
+
+    scope.registerCleanupFunction(() => {
+      this.currentScope = null;
+
+      return Promise.all(
+        Array.from(this.fetchScopes.values(), promise =>
+          promise.then(scope => scope.close())
+        )
+      );
+    });
+  },
+
+  init(scope) {
+    // QuotaManager crashes if it doesn't have a profile.
+    scope.do_get_profile();
+
+    this.initCommon(scope);
+  },
+
+  initMochitest(scope) {
+    this.initCommon(scope);
+  },
+
+  ensureInitialized(scope) {
+    if (!this.currentScope) {
+      if (scope.do_get_profile) {
+        this.init(scope);
+      } else {
+        this.initMochitest(scope);
+      }
+    }
+  },
+
+  /**
+   * Creates a new HttpServer for testing, and begins listening on the
+   * specified port. Automatically shuts down the server when the test
+   * unit ends.
+   *
+   * @param {object} [options = {}]
+   *        The options object.
+   * @param {integer} [options.port = -1]
+   *        The port to listen on. If omitted, listen on a random
+   *        port. The latter is the preferred behavior.
+   * @param {sequence<string>?} [options.hosts = null]
+   *        A set of hosts to accept connections to. Support for this is
+   *        implemented using a proxy filter.
+   *
+   * @returns {HttpServer}
+   *        The HTTP server instance.
+   */
+  createHttpServer({ port = -1, hosts } = {}) {
+    let server = new lazy.HttpServer();
+    server.start(port);
+
+    if (hosts) {
+      const hostsSet = new Set();
+      const serverHost = "localhost";
+      const serverPort = server.identity.primaryPort;
+
+      for (let host of hosts) {
+        if (host.startsWith("[") && host.endsWith("]")) {
+          // HttpServer expects IPv6 addresses in bracket notation, but the
+          // proxy filter uses nsIURI.host, which does not have brackets.
+          hostsSet.add(host.slice(1, -1));
+        } else {
+          hostsSet.add(host);
+        }
+        server.identity.add("http", host, 80);
+      }
+
+      const proxyFilter = {
+        proxyInfo: lazy.proxyService.newProxyInfo(
+          "http",
+          serverHost,
+          serverPort,
+          "",
+          "",
+          0,
+          4096,
+          null
+        ),
+
+        applyFilter(channel, defaultProxyInfo, callback) {
+          if (hostsSet.has(channel.URI.host)) {
+            callback.onProxyFilterResult(this.proxyInfo);
+          } else {
+            callback.onProxyFilterResult(defaultProxyInfo);
+          }
+        },
+      };
+
+      lazy.proxyService.registerChannelFilter(proxyFilter, 0);
+      this.currentScope.registerCleanupFunction(() => {
+        lazy.proxyService.unregisterChannelFilter(proxyFilter);
+      });
+    }
+
+    this.currentScope.registerCleanupFunction(() => {
+      return new Promise(resolve => {
+        server.stop(resolve);
+      });
+    });
+
+    return server;
+  },
+
+  registerJSON(server, path, obj) {
+    server.registerPathHandler(path, (request, response) => {
+      response.setHeader("content-type", "application/json", true);
+      response.write(JSON.stringify(obj));
+    });
+  },
+
+  get remoteContentScripts() {
+    return gRemoteContentScripts;
+  },
+
+  set remoteContentScripts(val) {
+    gRemoteContentScripts = !!val;
+  },
+
+  async fetch(origin, url, options) {
+    let fetchScopePromise = this.fetchScopes.get(origin);
+    if (!fetchScopePromise) {
+      fetchScopePromise = this.loadContentPage(origin);
+      this.fetchScopes.set(origin, fetchScopePromise);
+    }
+
+    let fetchScope = await fetchScopePromise;
+    return fetchScope.sendMessage("Test:Fetch", { url, options });
+  },
+
+  /**
+   * Loads a content page into a hidden docShell.
+   *
+   * @param {string} url
+   *        The URL to load.
+   * @param {object} [options = {}]
+   * @param {ExtensionWrapper} [options.extension]
+   *        If passed, load the URL as an extension page for the given
+   *        extension.
+   * @param {boolean} [options.remote]
+   *        If true, load the URL in a content process. If false, load
+   *        it in the parent process.
+   * @param {boolean} [options.remoteSubframes]
+   *        If true, load cross-origin frames in separate content processes.
+   *        This is ignored if |options.remote| is false.
+   * @param {string} [options.redirectUrl]
+   *        An optional URL that the initial page is expected to
+   *        redirect to.
+   *
+   * @returns {ContentPage}
+   */
+  loadContentPage(
+    url,
+    {
+      extension = undefined,
+      remote = undefined,
+      remoteSubframes = undefined,
+      redirectUrl = undefined,
+      privateBrowsing = false,
+      userContextId = undefined,
+    } = {}
+  ) {
+    lazy.ContentTask.setTestScope(this.currentScope);
+
+    let contentPage = new ContentPage(
+      remote,
+      remoteSubframes,
+      extension && extension.extension,
+      privateBrowsing,
+      userContextId
+    );
+
+    return contentPage.loadURL(url, redirectUrl).then(() => {
+      return contentPage;
+    });
+  },
+};