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. 4 5 // Custom binding for the GCM API. 6 7 var binding = require('binding').Binding.create('gcm'); 8 var forEach = require('utils').forEach; 9 10 binding.registerCustomHook(function(bindingsAPI) { 11 var apiFunctions = bindingsAPI.apiFunctions; 12 var gcm = bindingsAPI.compiledApi; 13 14 apiFunctions.setUpdateArgumentsPostValidate( 15 'send', function(message, callback) { 16 // Validate message.data. 17 var payloadSize = 0; 18 forEach(message.data, function(property, value) { 19 if (property.length == 0) 20 throw new Error("One of data keys is empty."); 21 22 // Issue an error for forbidden prefixes of property names. 23 if (property.indexOf("goog.") == 0 || 24 property.indexOf("google") == 0) { 25 throw new Error("Invalid data key: " + property); 26 } 27 28 payloadSize += property.length + value.length; 29 }); 30 31 if (payloadSize > gcm.MAX_MESSAGE_SIZE) 32 throw new Error("Payload exceeded allowed size limit. Payload size is: " 33 + payloadSize); 34 35 if (payloadSize == 0) 36 throw new Error("No data to send."); 37 38 return arguments; 39 }); 40 }); 41 42 exports.binding = binding.generate(); 43
