Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

5 files changed, 531 insertions, 0 deletions

diff --git a/remote/shared/messagehandler/transports/BrowsingContextUtils.sys.mjs b/remote/shared/messagehandler/transports/BrowsingContextUtils.sys.mjs
new file mode 100644
index 0000000000..482f90948a
--- /dev/null
+++ b/remote/shared/messagehandler/transports/BrowsingContextUtils.sys.mjs
@@ -0,0 +1,57 @@
+/* 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/. */
+
+function isExtensionContext(browsingContext) {
+  let principal;
+  if (CanonicalBrowsingContext.isInstance(browsingContext)) {
+    principal = browsingContext.currentWindowGlobal.documentPrincipal;
+  } else {
+    principal = browsingContext.window.document.nodePrincipal;
+  }
+
+  // In practice, note that the principal will never be an expanded principal.
+  // The are only used for content scripts executed in a Sandbox, and do not
+  // have a browsing context on their own.
+  // But we still use this flag because there is no isAddonPrincipal flag.
+  return principal.isAddonOrExpandedAddonPrincipal;
+}
+
+function isParentProcess(browsingContext) {
+  if (CanonicalBrowsingContext.isInstance(browsingContext)) {
+    return browsingContext.currentWindowGlobal.osPid === -1;
+  }
+
+  // If `browsingContext` is not a `CanonicalBrowsingContext`, then we are
+  // necessarily in a content process page.
+  return false;
+}
+
+/**
+ * Check if the given browsing context is valid for the message handler
+ * to use.
+ *
+ * @param {BrowsingContext} browsingContext
+ *     The browsing context to check.
+ * @param {object=} options
+ * @param {string=} options.browserId
+ *    The id of the browser to filter the browsing contexts by (optional).
+ * @returns {boolean}
+ *     True if the browsing context is valid, false otherwise.
+ */
+export function isBrowsingContextCompatible(browsingContext, options = {}) {
+  const { browserId } = options;
+
+  // If a browserId was provided, skip browsing contexts which are not
+  // associated with this browserId.
+  if (browserId !== undefined && browsingContext.browserId !== browserId) {
+    return false;
+  }
+
+  // Skip:
+  // - extension contexts until we support debugging webextensions, see Bug 1755014.
+  // - privileged contexts until we support debugging Chrome context, see Bug 1713440.
+  return (
+    !isExtensionContext(browsingContext) && !isParentProcess(browsingContext)
+  );
+}
diff --git a/remote/shared/messagehandler/transports/RootTransport.sys.mjs b/remote/shared/messagehandler/transports/RootTransport.sys.mjs
new file mode 100644
index 0000000000..2fb206ab93
--- /dev/null
+++ b/remote/shared/messagehandler/transports/RootTransport.sys.mjs
@@ -0,0 +1,190 @@
+/* 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/. */
+
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  ContextDescriptorType:
+    "chrome://remote/content/shared/messagehandler/MessageHandler.sys.mjs",
+  isBrowsingContextCompatible:
+    "chrome://remote/content/shared/messagehandler/transports/BrowsingContextUtils.sys.mjs",
+  Log: "chrome://remote/content/shared/Log.sys.mjs",
+  MessageHandlerFrameActor:
+    "chrome://remote/content/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameActor.sys.mjs",
+  TabManager: "chrome://remote/content/shared/TabManager.sys.mjs",
+});
+
+XPCOMUtils.defineLazyGetter(lazy, "logger", () => lazy.Log.get());
+
+const MAX_RETRY_ATTEMPTS = 10;
+
+/**
+ * RootTransport is intended to be used from a ROOT MessageHandler to communicate
+ * with WINDOW_GLOBAL MessageHandlers via the MessageHandlerFrame JSWindow
+ * actors.
+ */
+export class RootTransport {
+  /**
+   * @param {MessageHandler} messageHandler
+   *     The MessageHandler instance which owns this RootTransport instance.
+   */
+  constructor(messageHandler) {
+    this._messageHandler = messageHandler;
+
+    // RootTransport will rely on the MessageHandlerFrame JSWindow actors.
+    // Make sure they are registered when instanciating a RootTransport.
+    lazy.MessageHandlerFrameActor.register();
+  }
+
+  /**
+   * Forward the provided command to WINDOW_GLOBAL MessageHandlers via the
+   * MessageHandlerFrame actors.
+   *
+   * @param {Command} command
+   *     The command to forward. See type definition in MessageHandler.js
+   * @returns {Promise}
+   *     Returns a promise that resolves with the result of the command after
+   *     being processed by WINDOW_GLOBAL MessageHandlers.
+   */
+  forwardCommand(command) {
+    if (command.destination.id && command.destination.contextDescriptor) {
+      throw new Error(
+        "Invalid command destination with both 'id' and 'contextDescriptor' properties"
+      );
+    }
+
+    // With an id given forward the command to only this specific destination.
+    if (command.destination.id) {
+      const browsingContext = BrowsingContext.get(command.destination.id);
+      if (!browsingContext) {
+        throw new Error(
+          "Unable to find a BrowsingContext for id " + command.destination.id
+        );
+      }
+      return this._sendCommandToBrowsingContext(command, browsingContext);
+    }
+
+    // ... otherwise broadcast to destinations matching the contextDescriptor.
+    if (command.destination.contextDescriptor) {
+      return this._broadcastCommand(command);
+    }
+
+    throw new Error(
+      "Unrecognized command destination, missing 'id' or 'contextDescriptor' properties"
+    );
+  }
+
+  _broadcastCommand(command) {
+    const { contextDescriptor } = command.destination;
+    const browsingContexts =
+      this._getBrowsingContextsForDescriptor(contextDescriptor);
+
+    return Promise.all(
+      browsingContexts.map(async browsingContext => {
+        try {
+          return await this._sendCommandToBrowsingContext(
+            command,
+            browsingContext
+          );
+        } catch (e) {
+          console.error(
+            `Failed to broadcast a command to browsingContext ${browsingContext.id}`,
+            e
+          );
+          return null;
+        }
+      })
+    );
+  }
+
+  async _sendCommandToBrowsingContext(command, browsingContext) {
+    const name = `${command.moduleName}.${command.commandName}`;
+
+    // The browsing context might be destroyed by a navigation. Keep a reference
+    // to the webProgress, which will persist, and always use it to retrieve the
+    // currently valid browsing context.
+    const webProgress = browsingContext.webProgress;
+
+    const { retryOnAbort = false } = command;
+
+    let attempts = 0;
+    while (true) {
+      try {
+        return await webProgress.browsingContext.currentWindowGlobal
+          .getActor("MessageHandlerFrame")
+          .sendCommand(command, this._messageHandler.sessionId);
+      } catch (e) {
+        if (!retryOnAbort || e.name != "AbortError") {
+          // Only retry if the command supports retryOnAbort and when the
+          // JSWindowActor pair gets destroyed.
+          throw e;
+        }
+
+        if (++attempts > MAX_RETRY_ATTEMPTS) {
+          lazy.logger.trace(
+            `RootTransport reached the limit of retry attempts (${MAX_RETRY_ATTEMPTS})` +
+              ` for command ${name} and browsing context ${webProgress.browsingContext.id}.`
+          );
+          throw e;
+        }
+
+        lazy.logger.trace(
+          `RootTransport retrying command ${name} for ` +
+            `browsing context ${webProgress.browsingContext.id}, attempt: ${attempts}.`
+        );
+        await new Promise(resolve => Services.tm.dispatchToMainThread(resolve));
+      }
+    }
+  }
+
+  toString() {
+    return `[object ${this.constructor.name} ${this._messageHandler.name}]`;
+  }
+
+  _getBrowsingContextsForDescriptor(contextDescriptor) {
+    const { id, type } = contextDescriptor;
+
+    if (type === lazy.ContextDescriptorType.All) {
+      return this._getBrowsingContexts();
+    }
+
+    if (type === lazy.ContextDescriptorType.TopBrowsingContext) {
+      return this._getBrowsingContexts({ browserId: id });
+    }
+
+    // TODO: Handle other types of context descriptors.
+    throw new Error(
+      `Unsupported contextDescriptor type for broadcasting: ${type}`
+    );
+  }
+
+  /**
+   * Get all browsing contexts, optionally matching the provided options.
+   *
+   * @param {object} options
+   * @param {string=} options.browserId
+   *    The id of the browser to filter the browsing contexts by (optional).
+   * @returns {Array<BrowsingContext>}
+   *    The browsing contexts matching the provided options or all browsing contexts
+   *    if no options are provided.
+   */
+  _getBrowsingContexts(options = {}) {
+    // extract browserId from options
+    const { browserId } = options;
+    let browsingContexts = [];
+
+    // Fetch all tab related browsing contexts for top-level windows.
+    for (const { browsingContext } of lazy.TabManager.browsers) {
+      if (lazy.isBrowsingContextCompatible(browsingContext, { browserId })) {
+        browsingContexts = browsingContexts.concat(
+          browsingContext.getAllBrowsingContextsInSubtree()
+        );
+      }
+    }
+
+    return browsingContexts;
+  }
+}
diff --git a/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameActor.sys.mjs b/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameActor.sys.mjs
new file mode 100644
index 0000000000..e516e92614
--- /dev/null
+++ b/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameActor.sys.mjs
@@ -0,0 +1,53 @@
+/* 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/. */
+
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  ActorManagerParent: "resource://gre/modules/ActorManagerParent.sys.mjs",
+
+  Log: "chrome://remote/content/shared/Log.sys.mjs",
+});
+
+XPCOMUtils.defineLazyGetter(lazy, "logger", () => lazy.Log.get());
+
+const FRAME_ACTOR_CONFIG = {
+  parent: {
+    esModuleURI:
+      "chrome://remote/content/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameParent.sys.mjs",
+  },
+  child: {
+    esModuleURI:
+      "chrome://remote/content/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameChild.sys.mjs",
+    events: {
+      DOMWindowCreated: {},
+      pagehide: {},
+      pageshow: {},
+    },
+  },
+  allFrames: true,
+  messageManagerGroups: ["browsers"],
+};
+
+/**
+ * MessageHandlerFrameActor exposes a simple registration helper to lazily
+ * register MessageHandlerFrame JSWindow actors.
+ */
+export const MessageHandlerFrameActor = {
+  registered: false,
+
+  register() {
+    if (this.registered) {
+      return;
+    }
+
+    lazy.ActorManagerParent.addJSWindowActors({
+      MessageHandlerFrame: FRAME_ACTOR_CONFIG,
+    });
+    this.registered = true;
+    lazy.logger.trace("Registered MessageHandlerFrame actors");
+  },
+};
diff --git a/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameChild.sys.mjs b/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameChild.sys.mjs
new file mode 100644
index 0000000000..52a8fdc4c9
--- /dev/null
+++ b/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameChild.sys.mjs
@@ -0,0 +1,111 @@
+/* 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 lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  isBrowsingContextCompatible:
+    "chrome://remote/content/shared/messagehandler/transports/BrowsingContextUtils.sys.mjs",
+  MessageHandlerRegistry:
+    "chrome://remote/content/shared/messagehandler/MessageHandlerRegistry.sys.mjs",
+  WindowGlobalMessageHandler:
+    "chrome://remote/content/shared/messagehandler/WindowGlobalMessageHandler.sys.mjs",
+});
+
+/**
+ * Map from MessageHandlerRegistry to MessageHandlerFrameChild actor. This will
+ * allow a WindowGlobalMessageHandler to find the JSWindowActorChild instance to
+ * use to send commands.
+ */
+const registryToActor = new WeakMap();
+
+/**
+ * Retrieve the MessageHandlerFrameChild which is linked to the provided
+ * WindowGlobalMessageHandler instance.
+ *
+ * @param {WindowGlobalMessageHandler} messageHandler
+ *     The WindowGlobalMessageHandler for which to get the JSWindowActor.
+ * @returns {MessageHandlerFrameChild}
+ *     The corresponding MessageHandlerFrameChild instance.
+ */
+export function getMessageHandlerFrameChildActor(messageHandler) {
+  return registryToActor.get(messageHandler.registry);
+}
+
+/**
+ * Child actor for the MessageHandlerFrame JSWindowActor. The
+ * MessageHandlerFrame actor is used by RootTransport to communicate between
+ * ROOT MessageHandlers and WINDOW_GLOBAL MessageHandlers.
+ */
+export class MessageHandlerFrameChild extends JSWindowActorChild {
+  actorCreated() {
+    this.type = lazy.WindowGlobalMessageHandler.type;
+    this.context = this.manager.browsingContext;
+
+    this._registry = new lazy.MessageHandlerRegistry(this.type, this.context);
+    registryToActor.set(this._registry, this);
+
+    this._onRegistryEvent = this._onRegistryEvent.bind(this);
+
+    // MessageHandlerFrameChild is responsible for forwarding events from
+    // WindowGlobalMessageHandler to the parent process.
+    // Such events are re-emitted on the MessageHandlerRegistry to avoid
+    // setting up listeners on individual MessageHandler instances.
+    this._registry.on("message-handler-registry-event", this._onRegistryEvent);
+  }
+
+  handleEvent({ persisted, type }) {
+    if (type == "DOMWindowCreated" || (type == "pageshow" && persisted)) {
+      // When the window is created or is retrieved from BFCache, instantiate
+      // a MessageHandler for all sessions which might need it.
+      if (lazy.isBrowsingContextCompatible(this.manager.browsingContext)) {
+        this._registry.createAllMessageHandlers();
+      }
+    } else if (type == "pagehide" && persisted) {
+      // When the page is moved to BFCache, all the currently created message
+      // handlers should be destroyed.
+      this._registry.destroy();
+    }
+  }
+
+  async receiveMessage(message) {
+    if (message.name === "MessageHandlerFrameParent:sendCommand") {
+      const { sessionId, command } = message.data;
+      const messageHandler =
+        this._registry.getOrCreateMessageHandler(sessionId);
+      try {
+        return await messageHandler.handleCommand(command);
+      } catch (e) {
+        if (e?.isRemoteError) {
+          return {
+            error: e.toJSON(),
+            isMessageHandlerError: e.isMessageHandlerError,
+          };
+        }
+        throw e;
+      }
+    }
+
+    return null;
+  }
+
+  sendCommand(command, sessionId) {
+    return this.sendQuery("MessageHandlerFrameChild:sendCommand", {
+      command,
+      sessionId,
+    });
+  }
+
+  _onRegistryEvent(eventName, wrappedEvent) {
+    this.sendAsyncMessage(
+      "MessageHandlerFrameChild:messageHandlerEvent",
+      wrappedEvent
+    );
+  }
+
+  didDestroy() {
+    this._registry.off("message-handler-registry-event", this._onRegistryEvent);
+    this._registry.destroy();
+  }
+}
diff --git a/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameParent.sys.mjs b/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameParent.sys.mjs
new file mode 100644
index 0000000000..f845b2fa01
--- /dev/null
+++ b/remote/shared/messagehandler/transports/js-window-actors/MessageHandlerFrameParent.sys.mjs
@@ -0,0 +1,120 @@
+/* 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/. */
+
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  error: "chrome://remote/content/shared/messagehandler/Errors.sys.mjs",
+  RootMessageHandlerRegistry:
+    "chrome://remote/content/shared/messagehandler/RootMessageHandlerRegistry.sys.mjs",
+  WindowGlobalMessageHandler:
+    "chrome://remote/content/shared/messagehandler/WindowGlobalMessageHandler.sys.mjs",
+});
+
+XPCOMUtils.defineLazyGetter(lazy, "WebDriverError", () => {
+  return ChromeUtils.importESModule(
+    "chrome://remote/content/shared/webdriver/Errors.sys.mjs"
+  ).error.WebDriverError;
+});
+
+/**
+ * Parent actor for the MessageHandlerFrame JSWindowActor. The
+ * MessageHandlerFrame actor is used by RootTransport to communicate between
+ * ROOT MessageHandlers and WINDOW_GLOBAL MessageHandlers.
+ */
+export class MessageHandlerFrameParent extends JSWindowActorParent {
+  async receiveMessage(message) {
+    switch (message.name) {
+      case "MessageHandlerFrameChild:sendCommand": {
+        return this.#handleSendCommandMessage(message.data);
+      }
+      case "MessageHandlerFrameChild:messageHandlerEvent": {
+        return this.#handleMessageHandlerEventMessage(message.data);
+      }
+      default:
+        throw new Error("Unsupported message:" + message.name);
+    }
+  }
+
+  /**
+   * Send a command to the corresponding MessageHandlerFrameChild actor via a
+   * JSWindowActor query.
+   *
+   * @param {Command} command
+   *     The command to forward. See type definition in MessageHandler.js
+   * @param {string} sessionId
+   *     ID of the session that sent the command.
+   * @returns {Promise}
+   *     Promise that will resolve with the result of query sent to the
+   *     MessageHandlerFrameChild actor.
+   */
+  async sendCommand(command, sessionId) {
+    const result = await this.sendQuery(
+      "MessageHandlerFrameParent:sendCommand",
+      {
+        command,
+        sessionId,
+      }
+    );
+
+    if (result?.error) {
+      if (result.isMessageHandlerError) {
+        throw lazy.error.MessageHandlerError.fromJSON(result.error);
+      }
+
+      // TODO: Do not assume WebDriver is the session protocol, see Bug 1779026.
+      throw lazy.WebDriverError.fromJSON(result.error);
+    }
+
+    return result;
+  }
+
+  async #handleMessageHandlerEventMessage(messageData) {
+    const { name, contextInfo, data, sessionId } = messageData;
+    const [moduleName] = name.split(".");
+
+    // Re-emit the event on the RootMessageHandler.
+    const messageHandler =
+      lazy.RootMessageHandlerRegistry.getExistingMessageHandler(sessionId);
+    // TODO: getModuleInstance expects a CommandDestination in theory,
+    // but only uses the MessageHandler type in practice, see Bug 1776389.
+    const module = messageHandler.moduleCache.getModuleInstance(moduleName, {
+      type: lazy.WindowGlobalMessageHandler.type,
+    });
+    let eventPayload = data;
+
+    // Modify an event payload if there is a special method in the targeted module.
+    // If present it can be found in windowglobal-in-root module.
+    if (module?.interceptEvent) {
+      eventPayload = await module.interceptEvent(name, data);
+
+      // Make sure that an event payload is returned.
+      if (!eventPayload) {
+        throw new Error(
+          `${moduleName}.interceptEvent doesn't return the event payload`
+        );
+      }
+    }
+    messageHandler.emitEvent(name, eventPayload, contextInfo);
+  }
+
+  async #handleSendCommandMessage(messageData) {
+    const { sessionId, command } = messageData;
+    const messageHandler =
+      lazy.RootMessageHandlerRegistry.getExistingMessageHandler(sessionId);
+    try {
+      return await messageHandler.handleCommand(command);
+    } catch (e) {
+      if (e?.isRemoteError) {
+        return {
+          error: e.toJSON(),
+          isMessageHandlerError: e.isMessageHandlerError,
+        };
+      }
+      throw e;
+    }
+  }
+}