michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict";
michael@0: 
michael@0: /* static functions */
michael@0: const DEBUG = false;
michael@0: 
michael@0: function debug(aStr) {
michael@0:   if (DEBUG)
michael@0:     dump("AlarmsManager: " + aStr + "\n");
michael@0: }
michael@0: 
michael@0: const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
michael@0: 
michael@0: Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: Cu.import("resource://gre/modules/DOMRequestHelper.jsm");
michael@0: 
michael@0: const ALARMSMANAGER_CONTRACTID = "@mozilla.org/alarmsManager;1";
michael@0: const ALARMSMANAGER_CID        = Components.ID("{fea1e884-9b05-11e1-9b64-87a7016c3860}");
michael@0: const nsIDOMMozAlarmsManager   = Ci.nsIDOMMozAlarmsManager;
michael@0: const nsIClassInfo             = Ci.nsIClassInfo;
michael@0: 
michael@0: function AlarmsManager()
michael@0: {
michael@0:   debug("Constructor");
michael@0: }
michael@0: 
michael@0: AlarmsManager.prototype = {
michael@0: 
michael@0:   __proto__: DOMRequestIpcHelper.prototype,
michael@0: 
michael@0:   classID : ALARMSMANAGER_CID,
michael@0: 
michael@0:   QueryInterface : XPCOMUtils.generateQI([nsIDOMMozAlarmsManager,
michael@0:                                           Ci.nsIDOMGlobalPropertyInitializer,
michael@0:                                           Ci.nsISupportsWeakReference,
michael@0:                                           Ci.nsIObserver]),
michael@0: 
michael@0:   classInfo : XPCOMUtils.generateCI({ classID: ALARMSMANAGER_CID,
michael@0:                                       contractID: ALARMSMANAGER_CONTRACTID,
michael@0:                                       classDescription: "AlarmsManager",
michael@0:                                       interfaces: [nsIDOMMozAlarmsManager],
michael@0:                                       flags: nsIClassInfo.DOM_OBJECT }),
michael@0: 
michael@0:   add: function add(aDate, aRespectTimezone, aData) {
michael@0:     debug("add()");
michael@0: 
michael@0:     if (!this._manifestURL) {
michael@0:       debug("Cannot add alarms for non-installed apps.");
michael@0:       throw Components.results.NS_ERROR_FAILURE;
michael@0:     }
michael@0: 
michael@0:     if (!aDate) {
michael@0:       throw Components.results.NS_ERROR_INVALID_ARG;
michael@0:     }
michael@0: 
michael@0:     let isIgnoreTimezone = true;
michael@0:     switch (aRespectTimezone) {
michael@0:       case "honorTimezone":
michael@0:         isIgnoreTimezone = false;
michael@0:         break;
michael@0: 
michael@0:       case "ignoreTimezone":
michael@0:         isIgnoreTimezone = true;
michael@0:         break;
michael@0: 
michael@0:       default:
michael@0:         throw Components.results.NS_ERROR_INVALID_ARG;
michael@0:         break;
michael@0:     }
michael@0: 
michael@0:     // Run JSON.stringify() in the sand box with the principal of the calling
michael@0:     // web page to ensure no cross-origin object is involved. A "Permission
michael@0:     // Denied" error will be thrown in case of privilege violation.
michael@0:     let sandbox = new Cu.Sandbox(this._window.document.nodePrincipal);
michael@0:     sandbox.data = aData;
michael@0:     let data = Cu.evalInSandbox("JSON.stringify(data)", sandbox);
michael@0:     let request = this.createRequest();
michael@0:     this._cpmm.sendAsyncMessage(
michael@0:       "AlarmsManager:Add",
michael@0:       { requestId: this.getRequestId(request),
michael@0:         date: aDate,
michael@0:         ignoreTimezone: isIgnoreTimezone,
michael@0:         data: JSON.parse(data),
michael@0:         pageURL: this._pageURL,
michael@0:         manifestURL: this._manifestURL }
michael@0:     );
michael@0:     return request;
michael@0:   },
michael@0: 
michael@0:   remove: function remove(aId) {
michael@0:     debug("remove()");
michael@0: 
michael@0:     this._cpmm.sendAsyncMessage(
michael@0:       "AlarmsManager:Remove",
michael@0:       { id: aId, manifestURL: this._manifestURL }
michael@0:     );
michael@0:   },
michael@0: 
michael@0:   getAll: function getAll() {
michael@0:     debug("getAll()");
michael@0: 
michael@0:     let request = this.createRequest();
michael@0:     this._cpmm.sendAsyncMessage(
michael@0:       "AlarmsManager:GetAll",
michael@0:       { requestId: this.getRequestId(request), manifestURL: this._manifestURL }
michael@0:     );
michael@0:     return request;
michael@0:   },
michael@0: 
michael@0:   receiveMessage: function receiveMessage(aMessage) {
michael@0:     debug("receiveMessage(): " + aMessage.name);
michael@0: 
michael@0:     let json = aMessage.json;
michael@0:     let request = this.getRequest(json.requestId);
michael@0: 
michael@0:     if (!request) {
michael@0:       debug("No request stored! " + json.requestId);
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     switch (aMessage.name) {
michael@0:       case "AlarmsManager:Add:Return:OK":
michael@0:         Services.DOMRequest.fireSuccess(request, json.id);
michael@0:         break;
michael@0: 
michael@0:       case "AlarmsManager:GetAll:Return:OK":
michael@0:         // We don't need to expose everything to the web content.
michael@0:         let alarms = [];
michael@0:         json.alarms.forEach(function trimAlarmInfo(aAlarm) {
michael@0:           let alarm = { "id":              aAlarm.id,
michael@0:                         "date":            aAlarm.date,
michael@0:                         "respectTimezone": aAlarm.ignoreTimezone ?
michael@0:                                              "ignoreTimezone" : "honorTimezone",
michael@0:                         "data":            aAlarm.data };
michael@0:           alarms.push(alarm);
michael@0:         });
michael@0:         Services.DOMRequest.fireSuccess(request,
michael@0:                                         Cu.cloneInto(alarms, this._window));
michael@0:         break;
michael@0: 
michael@0:       case "AlarmsManager:Add:Return:KO":
michael@0:         Services.DOMRequest.fireError(request, json.errorMsg);
michael@0:         break;
michael@0: 
michael@0:       case "AlarmsManager:GetAll:Return:KO":
michael@0:         Services.DOMRequest.fireError(request, json.errorMsg);
michael@0:         break;
michael@0: 
michael@0:       default:
michael@0:         debug("Wrong message: " + aMessage.name);
michael@0:         break;
michael@0:     }
michael@0:     this.removeRequest(json.requestId);
michael@0:    },
michael@0: 
michael@0:   // nsIDOMGlobalPropertyInitializer implementation
michael@0:   init: function init(aWindow) {
michael@0:     debug("init()");
michael@0: 
michael@0:     // Set navigator.mozAlarms to null.
michael@0:     if (!Services.prefs.getBoolPref("dom.mozAlarms.enabled")) {
michael@0:       return null;
michael@0:     }
michael@0: 
michael@0:     // Only pages with perm set can use the alarms.
michael@0:     let principal = aWindow.document.nodePrincipal;
michael@0:     let perm =
michael@0:       Services.perms.testExactPermissionFromPrincipal(principal, "alarms");
michael@0:     if (perm != Ci.nsIPermissionManager.ALLOW_ACTION) {
michael@0:       return null;
michael@0:     }
michael@0: 
michael@0:     // SystemPrincipal documents do not have any origin.
michael@0:     // Reject them for now.
michael@0:     if (!principal.URI) {
michael@0:       return null;
michael@0:     }
michael@0: 
michael@0:     this._cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]
michael@0:                    .getService(Ci.nsISyncMessageSender);
michael@0: 
michael@0:     // Add the valid messages to be listened.
michael@0:     this.initDOMRequestHelper(aWindow, ["AlarmsManager:Add:Return:OK",
michael@0:                                         "AlarmsManager:Add:Return:KO",
michael@0:                                         "AlarmsManager:GetAll:Return:OK",
michael@0:                                         "AlarmsManager:GetAll:Return:KO"]);
michael@0: 
michael@0:     // Get the manifest URL if this is an installed app
michael@0:     let appsService = Cc["@mozilla.org/AppsService;1"]
michael@0:                         .getService(Ci.nsIAppsService);
michael@0:     this._pageURL = principal.URI.spec;
michael@0:     this._manifestURL = appsService.getManifestURLByLocalId(principal.appId);
michael@0:     this._window = aWindow;
michael@0:   },
michael@0: 
michael@0:   // Called from DOMRequestIpcHelper.
michael@0:   uninit: function uninit() {
michael@0:     debug("uninit()");
michael@0:   },
michael@0: }
michael@0: 
michael@0: this.NSGetFactory = XPCOMUtils.generateNSGetFactory([AlarmsManager])