The Tor Browser: dom/activities/src/ActivityRequestHandler.js@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 "use strict";

     7 const Ci = Components.interfaces;

     8 const Cu = Components.utils;

    10 Cu.import("resource://gre/modules/XPCOMUtils.jsm");

    11 Cu.import("resource://gre/modules/Services.jsm");

    13 XPCOMUtils.defineLazyServiceGetter(this, "cpmm",

    14                                    "@mozilla.org/childprocessmessagemanager;1",

    15                                    "nsISyncMessageSender");

    17 function debug(aMsg) {

    18   //dump("-- ActivityRequestHandler.js " + Date.now() + " : " + aMsg + "\n");

    19 }

    21 /**

    22   * nsIDOMMozActivityRequestHandler implementation.

    23   */

    25 function ActivityRequestHandler() {

    26   debug("ActivityRequestHandler");

    28   // When a system message of type 'activity' is emitted, it forces the

    29   // creation of an ActivityWrapper which in turns replace the default

    30   // system message callback. The newly created wrapper then create an

    31   // ActivityRequestHandler object.

    32 }

    34 ActivityRequestHandler.prototype = {

    35   init: function arh_init(aWindow) {

    36     this._window = aWindow;

    37   },

    39   __init: function arh___init(aId, aOptions) {

    40     this._id = aId;

    41     this._options = aOptions;

    42   },

    44   get source() {

    45     // We need to clone this object because the this._options.data has

    46     // the type any in WebIDL which will cause the binding layer to pass

    47     // the value which is a COW unmodified to content.

    48     return Cu.cloneInto(this._options, this._window);

    49   },

    51   postResult: function arh_postResult(aResult) {

    52     cpmm.sendAsyncMessage("Activity:PostResult", {

    53       "id": this._id,

    54       "result": aResult

    55     });

    56     Services.obs.notifyObservers(null, "activity-success", this._id);

    57   },

    59   postError: function arh_postError(aError) {

    60     cpmm.sendAsyncMessage("Activity:PostError", {

    61       "id": this._id,

    62       "error": aError

    63     });

    64     Services.obs.notifyObservers(null, "activity-error", this._id);

    65   },

    67   classID: Components.ID("{9326952a-dbe3-4d81-a51f-d9c160d96d6b}"),

    69   QueryInterface: XPCOMUtils.generateQI([

    70     Ci.nsIDOMGlobalPropertyInitializer

    71   ])

    72 }

    74 this.NSGetFactory = XPCOMUtils.generateNSGetFactory([ActivityRequestHandler]);

The Tor Browser / file revision

dom/activities/src/ActivityRequestHandler.js@97036ab72558

dom/activities/src/ActivityRequestHandler.js