Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 477 insertions, 0 deletions

diff --git a/devtools/server/devtools-server.js b/devtools/server/devtools-server.js
new file mode 100644
index 0000000000..2f5687af7d
--- /dev/null
+++ b/devtools/server/devtools-server.js
@@ -0,0 +1,477 @@
+/* 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/. */
+
+"use strict";
+
+var { Ci } = require("chrome");
+var Services = require("Services");
+var { ActorRegistry } = require("devtools/server/actors/utils/actor-registry");
+var DevToolsUtils = require("devtools/shared/DevToolsUtils");
+var { dumpn } = DevToolsUtils;
+
+loader.lazyRequireGetter(
+  this,
+  "DevToolsServerConnection",
+  "devtools/server/devtools-server-connection",
+  true
+);
+loader.lazyRequireGetter(
+  this,
+  "Authentication",
+  "devtools/shared/security/auth"
+);
+loader.lazyRequireGetter(
+  this,
+  "LocalDebuggerTransport",
+  "devtools/shared/transport/local-transport",
+  true
+);
+loader.lazyRequireGetter(
+  this,
+  "ChildDebuggerTransport",
+  "devtools/shared/transport/child-transport",
+  true
+);
+loader.lazyRequireGetter(
+  this,
+  "JsWindowActorTransport",
+  "devtools/shared/transport/js-window-actor-transport",
+  true
+);
+loader.lazyRequireGetter(
+  this,
+  "WorkerThreadWorkerDebuggerTransport",
+  "devtools/shared/transport/worker-transport",
+  true
+);
+
+const CONTENT_PROCESS_SERVER_STARTUP_SCRIPT =
+  "resource://devtools/server/startup/content-process.js";
+
+loader.lazyRequireGetter(this, "EventEmitter", "devtools/shared/event-emitter");
+
+/**
+ * DevToolsServer is a singleton that has several responsibilities. It will
+ * register the DevTools server actors that are relevant to the context.
+ * It can also create other DevToolsServer, that will live in the same
+ * environment as the debugged target (content page, worker...).
+ *
+ * For instance a regular Toolbox will be linked to DevToolsClient connected to
+ * a DevToolsServer running in the same process as the Toolbox (main process).
+ * But another DevToolsServer will be created in the same process as the page
+ * targeted by the Toolbox.
+ *
+ * Despite being a singleton, the DevToolsServer still has a lifecycle and a
+ * state. When a consumer needs to spawn a DevToolsServer, the init() method
+ * should be called. Then you should either call registerAllActors or
+ * registerActors to setup the server.
+ * When the server is no longer needed, destroy() should be called.
+ *
+ */
+var DevToolsServer = {
+  _listeners: [],
+  _initialized: false,
+  // Map of global actor names to actor constructors.
+  globalActorFactories: {},
+  // Map of target-scoped actor names to actor constructors.
+  targetScopedActorFactories: {},
+
+  LONG_STRING_LENGTH: 10000,
+  LONG_STRING_INITIAL_LENGTH: 1000,
+  LONG_STRING_READ_LENGTH: 65 * 1024,
+
+  /**
+   * The windowtype of the chrome window to use for actors that use the global
+   * window (i.e the global style editor). Set this to your main window type,
+   * for example "navigator:browser".
+   */
+  chromeWindowType: "navigator:browser",
+
+  /**
+   * Allow debugging chrome of (parent or child) processes.
+   */
+  allowChromeProcess: false,
+
+  /**
+   * Flag used to check if the server can be destroyed when all connections have been
+   * removed. Firefox on Android runs a single shared DevToolsServer, and should not be
+   * closed even if no client is connected.
+   */
+  keepAlive: false,
+
+  /**
+   * We run a special server in child process whose main actor is an instance
+   * of FrameTargetActor, but that isn't a root actor. Instead there is no root
+   * actor registered on DevToolsServer.
+   */
+  get rootlessServer() {
+    return !this.createRootActor;
+  },
+
+  /**
+   * Initialize the devtools server.
+   */
+  init() {
+    if (this.initialized) {
+      return;
+    }
+
+    this._connections = {};
+    ActorRegistry.init(this._connections);
+    this._nextConnID = 0;
+
+    this._initialized = true;
+    this._onSocketListenerAccepted = this._onSocketListenerAccepted.bind(this);
+
+    if (!isWorker) {
+      // Mochitests watch this observable in order to register the custom actor
+      // test-actor.js.
+      // Services.obs is not available in workers.
+      const subject = { wrappedJSObject: ActorRegistry };
+      Services.obs.notifyObservers(subject, "devtools-server-initialized");
+    }
+  },
+
+  get protocol() {
+    return require("devtools/shared/protocol");
+  },
+
+  get initialized() {
+    return this._initialized;
+  },
+
+  hasConnection() {
+    return this._connections && Object.keys(this._connections).length > 0;
+  },
+
+  /**
+   * Performs cleanup tasks before shutting down the devtools server. Such tasks
+   * include clearing any actor constructors added at runtime. This method
+   * should be called whenever a devtools server is no longer useful, to avoid
+   * memory leaks. After this method returns, the devtools server must be
+   * initialized again before use.
+   */
+  destroy() {
+    if (!this._initialized) {
+      return;
+    }
+
+    for (const connID of Object.getOwnPropertyNames(this._connections)) {
+      this._connections[connID].close();
+    }
+
+    ActorRegistry.destroy();
+
+    this.closeAllSocketListeners();
+    this._initialized = false;
+
+    dumpn("DevTools server is shut down.");
+  },
+
+  /**
+   * Raises an exception if the server has not been properly initialized.
+   */
+  _checkInit() {
+    if (!this._initialized) {
+      throw new Error("DevToolsServer has not been initialized.");
+    }
+
+    if (!this.rootlessServer && !this.createRootActor) {
+      throw new Error(
+        "Use DevToolsServer.setRootActor() to add a root actor " +
+          "implementation."
+      );
+    }
+  },
+
+  /**
+   * Register different type of actors. Only register the one that are not already
+   * registered.
+   *
+   * @param root boolean
+   *        Registers the root actor from webbrowser module, which is used to
+   *        connect to and fetch any other actor.
+   * @param browser boolean
+   *        Registers all the parent process actors useful for debugging the
+   *        runtime itself, like preferences and addons actors.
+   * @param target boolean
+   *        Registers all the target-scoped actors like console, script, etc.
+   *        for debugging a target context.
+   */
+  registerActors({ root, browser, target }) {
+    if (browser) {
+      ActorRegistry.addBrowserActors();
+    }
+
+    if (root) {
+      const { createRootActor } = require("devtools/server/actors/webbrowser");
+      this.setRootActor(createRootActor);
+    }
+
+    if (target) {
+      ActorRegistry.addTargetScopedActors();
+    }
+  },
+
+  /**
+   * Register all possible actors for this DevToolsServer.
+   */
+  registerAllActors() {
+    this.registerActors({ root: true, browser: true, target: true });
+  },
+
+  get listeningSockets() {
+    return this._listeners.length;
+  },
+
+  /**
+   * Add a SocketListener instance to the server's set of active
+   * SocketListeners.  This is called by a SocketListener after it is opened.
+   */
+  addSocketListener(listener) {
+    if (!Services.prefs.getBoolPref("devtools.debugger.remote-enabled")) {
+      throw new Error("Can't add a SocketListener, remote debugging disabled");
+    }
+    this._checkInit();
+
+    listener.on("accepted", this._onSocketListenerAccepted);
+    this._listeners.push(listener);
+  },
+
+  /**
+   * Remove a SocketListener instance from the server's set of active
+   * SocketListeners.  This is called by a SocketListener after it is closed.
+   */
+  removeSocketListener(listener) {
+    // Remove connections that were accepted in the listener.
+    for (const connID of Object.getOwnPropertyNames(this._connections)) {
+      const connection = this._connections[connID];
+      if (connection.isAcceptedBy(listener)) {
+        connection.close();
+      }
+    }
+
+    this._listeners = this._listeners.filter(l => l !== listener);
+    listener.off("accepted", this._onSocketListenerAccepted);
+  },
+
+  /**
+   * Closes and forgets all previously opened listeners.
+   *
+   * @return boolean
+   *         Whether any listeners were actually closed.
+   */
+  closeAllSocketListeners() {
+    if (!this.listeningSockets) {
+      return false;
+    }
+
+    for (const listener of this._listeners) {
+      listener.close();
+    }
+
+    return true;
+  },
+
+  _onSocketListenerAccepted(transport, listener) {
+    this._onConnection(transport, null, false, listener);
+  },
+
+  /**
+   * Creates a new connection to the local debugger speaking over a fake
+   * transport. This connection results in straightforward calls to the onPacket
+   * handlers of each side.
+   *
+   * @param prefix string [optional]
+   *    If given, all actors in this connection will have names starting
+   *    with |prefix + '/'|.
+   * @returns a client-side DebuggerTransport for communicating with
+   *    the newly-created connection.
+   */
+  connectPipe(prefix) {
+    this._checkInit();
+
+    const serverTransport = new LocalDebuggerTransport();
+    const clientTransport = new LocalDebuggerTransport(serverTransport);
+    serverTransport.other = clientTransport;
+    const connection = this._onConnection(serverTransport, prefix);
+
+    // I'm putting this here because I trust you.
+    //
+    // There are times, when using a local connection, when you're going
+    // to be tempted to just get direct access to the server.  Resist that
+    // temptation!  If you succumb to that temptation, you will make the
+    // fine developers that work on Fennec and Firefox OS sad.  They're
+    // professionals, they'll try to act like they understand, but deep
+    // down you'll know that you hurt them.
+    //
+    // This reference allows you to give in to that temptation.  There are
+    // times this makes sense: tests, for example, and while porting a
+    // previously local-only codebase to the remote protocol.
+    //
+    // But every time you use this, you will feel the shame of having
+    // used a property that starts with a '_'.
+    clientTransport._serverConnection = connection;
+
+    return clientTransport;
+  },
+
+  /**
+   * In a content child process, create a new connection that exchanges
+   * nsIMessageSender messages with our parent process.
+   *
+   * @param prefix
+   *    The prefix we should use in our nsIMessageSender message names and
+   *    actor names. This connection will use messages named
+   *    "debug:<prefix>:packet", and all its actors will have names
+   *    beginning with "<prefix>/".
+   */
+  connectToParent(prefix, scopeOrManager) {
+    this._checkInit();
+
+    const transport = isWorker
+      ? new WorkerThreadWorkerDebuggerTransport(scopeOrManager, prefix)
+      : new ChildDebuggerTransport(scopeOrManager, prefix);
+
+    return this._onConnection(transport, prefix, true);
+  },
+
+  connectToParentWindowActor(jsWindowChildActor, forwardingPrefix) {
+    this._checkInit();
+    const transport = new JsWindowActorTransport(
+      jsWindowChildActor,
+      forwardingPrefix
+    );
+
+    return this._onConnection(transport, forwardingPrefix, true);
+  },
+
+  /**
+   * Check if the server is running in the child process.
+   */
+  get isInChildProcess() {
+    return (
+      Services.appinfo.processType != Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT
+    );
+  },
+
+  /**
+   * Create a new debugger connection for the given transport. Called after
+   * connectPipe(), from connectToParent, or from an incoming socket
+   * connection handler.
+   *
+   * If present, |forwardingPrefix| is a forwarding prefix that a parent
+   * server is using to recognizes messages intended for this server. Ensure
+   * that all our actors have names beginning with |forwardingPrefix + '/'|.
+   * In particular, the root actor's name will be |forwardingPrefix + '/root'|.
+   */
+  _onConnection(
+    transport,
+    forwardingPrefix,
+    noRootActor = false,
+    socketListener = null
+  ) {
+    let connID;
+    if (forwardingPrefix) {
+      connID = forwardingPrefix + "/";
+    } else {
+      // Multiple servers can be started at the same time, and when that's the
+      // case, they are loaded in separate devtools loaders.
+      // So, use the current loader ID to prefix the connection ID and make it
+      // unique.
+      connID = "server" + loader.id + ".conn" + this._nextConnID++ + ".";
+    }
+
+    const conn = new DevToolsServerConnection(
+      connID,
+      transport,
+      socketListener
+    );
+    this._connections[connID] = conn;
+
+    // Create a root actor for the connection and send the hello packet.
+    if (!noRootActor) {
+      conn.rootActor = this.createRootActor(conn);
+      if (forwardingPrefix) {
+        conn.rootActor.actorID = forwardingPrefix + "/root";
+      } else {
+        conn.rootActor.actorID = "root";
+      }
+      conn.addActor(conn.rootActor);
+      transport.send(conn.rootActor.sayHello());
+    }
+    transport.ready();
+
+    this.emit("connectionchange", "opened", conn);
+    return conn;
+  },
+
+  /**
+   * Remove the connection from the debugging server.
+   */
+  _connectionClosed(connection) {
+    delete this._connections[connection.prefix];
+    this.emit("connectionchange", "closed", connection);
+  },
+
+  // DevToolsServer extension API.
+
+  setRootActor(actorFactory) {
+    this.createRootActor = actorFactory;
+  },
+
+  /**
+   * Called when DevTools are unloaded to remove the contend process server startup script
+   * for the list of scripts loaded for each new content process. Will also remove message
+   * listeners from already loaded scripts.
+   */
+  removeContentServerScript() {
+    Services.ppmm.removeDelayedProcessScript(
+      CONTENT_PROCESS_SERVER_STARTUP_SCRIPT
+    );
+    try {
+      Services.ppmm.broadcastAsyncMessage("debug:close-content-server");
+    } catch (e) {
+      // Nothing to do
+    }
+  },
+
+  /**
+   * Searches all active connections for an actor matching an ID.
+   *
+   * ⚠ TO BE USED ONLY FROM SERVER CODE OR TESTING ONLY! ⚠`
+   *
+   * This is helpful for some tests which depend on reaching into the server to check some
+   * properties of an actor, and it is also used by the actors related to the
+   * DevTools WebExtensions API to be able to interact with the actors created for the
+   * panels natively provided by the DevTools Toolbox.
+   */
+  searchAllConnectionsForActor(actorID) {
+    // NOTE: the actor IDs are generated with the following format:
+    //
+    //   `server${loaderID}.conn${ConnectionID}${ActorPrefix}${ActorID}`
+    //
+    // as an optimization we can come up with a regexp to query only
+    // the right connection via its id.
+    for (const connID of Object.getOwnPropertyNames(this._connections)) {
+      const actor = this._connections[connID].getActor(actorID);
+      if (actor) {
+        return actor;
+      }
+    }
+    return null;
+  },
+};
+
+// Expose these to save callers the trouble of importing DebuggerSocket
+DevToolsUtils.defineLazyGetter(DevToolsServer, "Authenticators", () => {
+  return Authentication.Authenticators;
+});
+DevToolsUtils.defineLazyGetter(DevToolsServer, "AuthenticationResult", () => {
+  return Authentication.AuthenticationResult;
+});
+
+EventEmitter.decorate(DevToolsServer);
+
+exports.DevToolsServer = DevToolsServer;