Move WebExtensions enabled Add-ons Manager

toolkit/mozapps/webextensions/addonManager.js

@@ -0,0 +1,296 @@
+/* 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/. */
+
+/**
+ * This component serves as integration between the platform and AddonManager.
+ * It is responsible for initializing and shutting down the AddonManager as well
+ * as passing new installs from webpages to the AddonManager.
+ */
+
+"use strict";
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+// The old XPInstall error codes
+const EXECUTION_ERROR   = -203;
+const CANT_READ_ARCHIVE = -207;
+const USER_CANCELLED    = -210;
+const DOWNLOAD_ERROR    = -228;
+const UNSUPPORTED_TYPE  = -244;
+const SUCCESS           = 0;
+
+const MSG_INSTALL_ENABLED  = "WebInstallerIsInstallEnabled";
+const MSG_INSTALL_ADDONS   = "WebInstallerInstallAddonsFromWebpage";
+const MSG_INSTALL_CALLBACK = "WebInstallerInstallCallback";
+
+const MSG_PROMISE_REQUEST  = "WebAPIPromiseRequest";
+const MSG_PROMISE_RESULT   = "WebAPIPromiseResult";
+const MSG_INSTALL_EVENT    = "WebAPIInstallEvent";
+const MSG_INSTALL_CLEANUP  = "WebAPICleanup";
+const MSG_ADDON_EVENT_REQ  = "WebAPIAddonEventRequest";
+const MSG_ADDON_EVENT      = "WebAPIAddonEvent";
+
+const CHILD_SCRIPT = "resource://gre/modules/addons/Content.js";
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+var gSingleton = null;
+
+function amManager() {
+  Cu.import("resource://gre/modules/AddonManager.jsm");
+  /* globals AddonManagerPrivate*/
+
+  Services.mm.loadFrameScript(CHILD_SCRIPT, true);
+  Services.mm.addMessageListener(MSG_INSTALL_ENABLED, this);
+  Services.mm.addMessageListener(MSG_INSTALL_ADDONS, this);
+  Services.mm.addMessageListener(MSG_PROMISE_REQUEST, this);
+  Services.mm.addMessageListener(MSG_INSTALL_CLEANUP, this);
+  Services.mm.addMessageListener(MSG_ADDON_EVENT_REQ, this);
+
+  Services.obs.addObserver(this, "message-manager-close", false);
+  Services.obs.addObserver(this, "message-manager-disconnect", false);
+
+  AddonManager.webAPI.setEventHandler(this.sendEvent);
+
+  // Needed so receiveMessage can be called directly by JS callers
+  this.wrappedJSObject = this;
+}
+
+amManager.prototype = {
+  observe: function(aSubject, aTopic, aData) {
+    switch (aTopic) {
+      case "addons-startup":
+        AddonManagerPrivate.startup();
+        break;
+
+      case "message-manager-close":
+      case "message-manager-disconnect":
+        this.childClosed(aSubject);
+        break;
+    }
+  },
+
+  /**
+   * @see amIAddonManager.idl
+   */
+  mapURIToAddonID: function(uri, id) {
+    id.value = AddonManager.mapURIToAddonID(uri);
+    return !!id.value;
+  },
+
+  /**
+   * @see amIWebInstaller.idl
+   */
+  isInstallEnabled: function(aMimetype, aReferer) {
+    return AddonManager.isInstallEnabled(aMimetype);
+  },
+
+  /**
+   * @see amIWebInstaller.idl
+   */
+  installAddonsFromWebpage: function(aMimetype, aBrowser, aInstallingPrincipal,
+                                     aUris, aHashes, aNames, aIcons, aCallback) {
+    if (aUris.length == 0)
+      return false;
+
+    let retval = true;
+    if (!AddonManager.isInstallAllowed(aMimetype, aInstallingPrincipal)) {
+      aCallback = null;
+      retval = false;
+    }
+
+    let installs = [];
+    function buildNextInstall() {
+      if (aUris.length == 0) {
+        AddonManager.installAddonsFromWebpage(aMimetype, aBrowser, aInstallingPrincipal, installs);
+        return;
+      }
+      let uri = aUris.shift();
+      AddonManager.getInstallForURL(uri, function(aInstall) {
+        function callCallback(aUri, aStatus) {
+          try {
+            aCallback.onInstallEnded(aUri, aStatus);
+          }
+          catch (e) {
+            Components.utils.reportError(e);
+          }
+        }
+
+        if (aInstall) {
+          installs.push(aInstall);
+          if (aCallback) {
+            aInstall.addListener({
+              onDownloadCancelled: function(aInstall) {
+                callCallback(uri, USER_CANCELLED);
+              },
+
+              onDownloadFailed: function(aInstall) {
+                if (aInstall.error == AddonManager.ERROR_CORRUPT_FILE)
+                  callCallback(uri, CANT_READ_ARCHIVE);
+                else
+                  callCallback(uri, DOWNLOAD_ERROR);
+              },
+
+              onInstallFailed: function(aInstall) {
+                callCallback(uri, EXECUTION_ERROR);
+              },
+
+              onInstallEnded: function(aInstall, aStatus) {
+                callCallback(uri, SUCCESS);
+              }
+            });
+          }
+        }
+        else if (aCallback) {
+          aCallback.onInstallEnded(uri, UNSUPPORTED_TYPE);
+        }
+        buildNextInstall();
+      }, aMimetype, aHashes.shift(), aNames.shift(), aIcons.shift(), null, aBrowser);
+    }
+    buildNextInstall();
+
+    return retval;
+  },
+
+  notify: function(aTimer) {
+    AddonManagerPrivate.backgroundUpdateTimerHandler();
+  },
+
+  // Maps message manager instances for content processes to the associated
+  // AddonListener instances.
+  addonListeners: new Map(),
+
+  _addAddonListener(target) {
+    if (!this.addonListeners.has(target)) {
+      let handler = (event, id, needsRestart) => {
+        target.sendAsyncMessage(MSG_ADDON_EVENT, {event, id, needsRestart});
+      };
+      let listener = {
+        onEnabling: (addon, needsRestart) => handler("onEnabling", addon.id, needsRestart),
+        onEnabled: (addon) => handler("onEnabled", addon.id, false),
+        onDisabling: (addon, needsRestart) => handler("onDisabling", addon.id, needsRestart),
+        onDisabled: (addon) => handler("onDisabled", addon.id, false),
+        onInstalling: (addon, needsRestart) => handler("onInstalling", addon.id, needsRestart),
+        onInstalled: (addon) => handler("onInstalled", addon.id, false),
+        onUninstalling: (addon, needsRestart) => handler("onUninstalling", addon.id, needsRestart),
+        onUninstalled: (addon) => handler("onUninstalled", addon.id, false),
+        onOperationCancelled: (addon) => handler("onOperationCancelled", addon.id, false),
+      };
+      this.addonListeners.set(target, listener);
+      AddonManager.addAddonListener(listener);
+    }
+  },
+
+  _removeAddonListener(target) {
+    if (this.addonListeners.has(target)) {
+      AddonManager.removeAddonListener(this.addonListeners.get(target));
+      this.addonListeners.delete(target);
+    }
+  },
+
+  /**
+   * messageManager callback function.
+   *
+   * Listens to requests from child processes for InstallTrigger
+   * activity, and sends back callbacks.
+   */
+  receiveMessage: function(aMessage) {
+    let payload = aMessage.data;
+
+    switch (aMessage.name) {
+      case MSG_INSTALL_ENABLED:
+        return AddonManager.isInstallEnabled(payload.mimetype);
+
+      case MSG_INSTALL_ADDONS: {
+        let callback = null;
+        if (payload.callbackID != -1) {
+          let mm = aMessage.target.messageManager;
+          callback = {
+            onInstallEnded: function(url, status) {
+              mm.sendAsyncMessage(MSG_INSTALL_CALLBACK, {
+                callbackID: payload.callbackID,
+                url: url,
+                status: status
+              });
+            },
+          };
+        }
+
+        return this.installAddonsFromWebpage(payload.mimetype,
+          aMessage.target, payload.triggeringPrincipal, payload.uris,
+          payload.hashes, payload.names, payload.icons, callback);
+      }
+
+      case MSG_PROMISE_REQUEST: {
+        let mm = aMessage.target.messageManager;
+        let resolve = (value) => {
+          mm.sendAsyncMessage(MSG_PROMISE_RESULT, {
+            callbackID: payload.callbackID,
+            resolve: value
+          });
+        }
+        let reject = (value) => {
+          mm.sendAsyncMessage(MSG_PROMISE_RESULT, {
+            callbackID: payload.callbackID,
+            reject: value
+          });
+        }
+
+        let API = AddonManager.webAPI;
+        if (payload.type in API) {
+          API[payload.type](aMessage.target, ...payload.args).then(resolve, reject);
+        }
+        else {
+          reject("Unknown Add-on API request.");
+        }
+        break;
+      }
+
+      case MSG_INSTALL_CLEANUP: {
+        AddonManager.webAPI.clearInstalls(payload.ids);
+        break;
+      }
+
+      case MSG_ADDON_EVENT_REQ: {
+        let target = aMessage.target.messageManager;
+        if (payload.enabled) {
+          this._addAddonListener(target);
+        } else {
+          this._removeAddonListener(target);
+        }
+      }
+    }
+    return undefined;
+  },
+
+  childClosed(target) {
+    AddonManager.webAPI.clearInstallsFrom(target);
+    this._removeAddonListener(target);
+  },
+
+  sendEvent(mm, data) {
+    mm.sendAsyncMessage(MSG_INSTALL_EVENT, data);
+  },
+
+  classID: Components.ID("{4399533d-08d1-458c-a87a-235f74451cfa}"),
+  _xpcom_factory: {
+    createInstance: function(aOuter, aIid) {
+      if (aOuter != null)
+        throw Components.Exception("Component does not support aggregation",
+                                   Cr.NS_ERROR_NO_AGGREGATION);
+
+      if (!gSingleton)
+        gSingleton = new amManager();
+      return gSingleton.QueryInterface(aIid);
+    }
+  },
+  QueryInterface: XPCOMUtils.generateQI([Ci.amIAddonManager,
+                                         Ci.amIWebInstaller,
+                                         Ci.nsITimerCallback,
+                                         Ci.nsIObserver,
+                                         Ci.nsIMessageListener])
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([amManager]);