gecko/dom/datastore/DataStoreServiceInternal.jsm

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/* 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"
const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
this.EXPORTED_SYMBOLS = ["DataStoreServiceInternal"];
function debug(s) {
// dump('DEBUG DataStoreServiceInternal: ' + s + '\n');
}
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
XPCOMUtils.defineLazyServiceGetter(this, "ppmm",
"@mozilla.org/parentprocessmessagemanager;1",
"nsIMessageBroadcaster");
XPCOMUtils.defineLazyServiceGetter(this, "dataStoreService",
"@mozilla.org/datastore-service;1",
"nsIDataStoreService");
this.DataStoreServiceInternal = {
init: function() {
debug("init");
let inParent = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULRuntime)
.processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT;
if (inParent) {
ppmm.addMessageListener("DataStore:Get", this);
}
},
receiveMessage: function(aMessage) {
debug("receiveMessage");
if (aMessage.name != 'DataStore:Get') {
return;
}
let prefName = 'dom.testing.datastore_enabled_for_hosted_apps';
if ((Services.prefs.getPrefType(prefName) == Services.prefs.PREF_INVALID ||
!Services.prefs.getBoolPref(prefName)) &&
!aMessage.target.assertAppHasStatus(Ci.nsIPrincipal.APP_STATUS_CERTIFIED)) {
return;
}
let msg = aMessage.data;
if (!aMessage.principal ||
aMessage.principal.appId == Ci.nsIScriptSecurityManager.UNKNOWN_APP_ID) {
aMessage.target.sendAsyncMessage("DataStore:Get:Return:KO");
return;
}
msg.stores = dataStoreService.getDataStoresInfo(msg.name, aMessage.principal.appId);
if (msg.stores === null) {
aMessage.target.sendAsyncMessage("DataStore:Get:Return:KO");
return;
}
aMessage.target.sendAsyncMessage("DataStore:Get:Return:OK", msg);
}
}
DataStoreServiceInternal.init();