| // Copyright 2013 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Custom binding for the GCM API. |
| |
| var forEach = require('utils').forEach; |
| |
| apiBridge.registerCustomHook(function(bindingsAPI) { |
| var apiFunctions = bindingsAPI.apiFunctions; |
| var gcm = bindingsAPI.compiledApi; |
| |
| apiFunctions.setUpdateArgumentsPostValidate( |
| 'send', function(message, callback) { |
| // Validate message.data. |
| var payloadSize = 0; |
| forEach(message.data, function(property, value) { |
| if (property.length === 0) |
| throw new Error("One of data keys is empty."); |
| |
| var lowerCasedProperty = property.toLowerCase(); |
| // Issue an error for forbidden prefixes of property names. |
| if (lowerCasedProperty.startsWith("goog.") || |
| lowerCasedProperty.startsWith("google") || |
| property.startsWith("collapse_key")) { |
| throw new Error("Invalid data key: " + property); |
| } |
| |
| payloadSize += property.length + value.length; |
| }); |
| |
| if (payloadSize > gcm.MAX_MESSAGE_SIZE) |
| throw new Error("Payload exceeded allowed size limit. Payload size is: " |
| + payloadSize); |
| |
| if (payloadSize === 0) |
| throw new Error("No data to send."); |
| |
| return arguments; |
| }); |
| }); |