gecko/browser/components/sessionstore/PrivacyLevel.jsm

79 lines
2.5 KiB
JavaScript

/* 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";
this.EXPORTED_SYMBOLS = ["PrivacyLevel"];
const Cu = Components.utils;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyServiceGetter(this, "gSessionStartup",
"@mozilla.org/browser/sessionstartup;1", "nsISessionStartup");
const PREF_NORMAL = "browser.sessionstore.privacy_level";
const PREF_DEFERRED = "browser.sessionstore.privacy_level_deferred";
// The following constants represent the different possible privacy levels that
// can be set by the user and that we need to consider when collecting text
// data, and cookies.
//
// Collect data from all sites (http and https).
const PRIVACY_NONE = 0;
// Collect data from unencrypted sites (http), only.
const PRIVACY_ENCRYPTED = 1;
// Collect no data.
const PRIVACY_FULL = 2;
/**
* Determines the current privacy level as set by the user.
*
* @param isPinned
* Whether to return the privacy level for pinned tabs.
* @return {int} The privacy level as read from the user's preferences.
*/
function getCurrentLevel(isPinned) {
let pref = PREF_NORMAL;
// If we're in the process of quitting and we're not autoresuming the session
// then we will use the deferred privacy level for non-pinned tabs.
if (!isPinned && Services.startup.shuttingDown && !gSessionStartup.isAutomaticRestoreEnabled()) {
pref = PREF_DEFERRED;
}
return Services.prefs.getIntPref(pref);
}
/**
* The external API as exposed by this module.
*/
var PrivacyLevel = Object.freeze({
/**
* Checks whether we're allowed to save data for a specific site.
*
* @param {isHttps: boolean, isPinned: boolean}
* An object that must have two properties: 'isHttps' and 'isPinned'.
* 'isHttps' tells whether the site us secure communication (HTTPS).
* 'isPinned' tells whether the site is loaded in a pinned tab.
* @return {bool} Whether we can save data for the specified site.
*/
canSave: function ({isHttps, isPinned}) {
let level = getCurrentLevel(isPinned);
// Never save any data when full privacy is requested.
if (level == PRIVACY_FULL) {
return false;
}
// Don't save data for encrypted sites when requested.
if (isHttps && level == PRIVACY_ENCRYPTED) {
return false;
}
return true;
}
});