1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Custom binding for the GCM API.
7 var binding = require('binding').Binding.create('gcm');
8 var forEach = require('utils').forEach;
10 binding.registerCustomHook(function(bindingsAPI) {
11 var apiFunctions = bindingsAPI.apiFunctions;
12 var gcm = bindingsAPI.compiledApi;
14 apiFunctions.setUpdateArgumentsPostValidate(
15 'send', function(message, callback) {
16 // Validate message.data.
18 forEach(message.data, function(property, value) {
19 if (property.length == 0)
20 throw new Error("One of data keys is empty.");
22 var lowerCasedProperty = property.toLowerCase();
23 // Issue an error for forbidden prefixes of property names.
24 if (lowerCasedProperty.indexOf("goog.") == 0 ||
25 lowerCasedProperty.indexOf("google") == 0 ||
26 property.indexOf("collapse_key") == 0) {
27 throw new Error("Invalid data key: " + property);
30 payloadSize += property.length + value.length;
33 if (payloadSize > gcm.MAX_MESSAGE_SIZE)
34 throw new Error("Payload exceeded allowed size limit. Payload size is: "
38 throw new Error("No data to send.");
44 exports.binding = binding.generate();