| //Copyright 2014-2015 Google Inc. All rights reserved. |
| |
| //Use of this source code is governed by a BSD-style |
| //license that can be found in the LICENSE file or at |
| //https://developers.google.com/open-source/licenses/bsd |
| |
| // ref: https://github.com/google/u2f-ref-code/blob/master/u2f-gae-demo/war/js/u2f-api.js |
| |
| /** |
| * @fileoverview The U2F api. |
| */ |
| 'use strict'; |
| |
| /** |
| * Modification: |
| * Wrap implementation so that we can exit if window.u2f is already supplied by the browser (see below). |
| */ |
| (function (root) { |
| /** |
| * Modification: |
| * Only continue load this library if window.u2f is not already supplied by the browser. |
| */ |
| var browserImplementsU2f = !!((typeof root.u2f !== 'undefined') && root.u2f.register); |
| |
| if (browserImplementsU2f) { |
| root.u2f.isSupported = true; |
| return; |
| } |
| |
| /** |
| * Namespace for the U2F api. |
| * @type {Object} |
| */ |
| var u2f = root.u2f || {}; |
| |
| /** |
| * Modification: |
| * Check if browser supports U2F API before this wrapper was added. |
| */ |
| u2f.isSupported = !!(((typeof u2f !== 'undefined') && u2f.register) || ((typeof chrome !== 'undefined') && chrome.runtime)); |
| |
| /** |
| * FIDO U2F Javascript API Version |
| * @number |
| */ |
| var js_api_version; |
| |
| /** |
| * The U2F extension id |
| * @const {string} |
| */ |
| // The Chrome packaged app extension ID. |
| // Uncomment this if you want to deploy a server instance that uses |
| // the package Chrome app and does not require installing the U2F Chrome extension. |
| u2f.EXTENSION_ID = 'kmendfapggjehodndflmmgagdbamhnfd'; |
| // The U2F Chrome extension ID. |
| // Uncomment this if you want to deploy a server instance that uses |
| // the U2F Chrome extension to authenticate. |
| // u2f.EXTENSION_ID = 'pfboblefjcgdjicmnffhdgionmgcdmne'; |
| |
| |
| /** |
| * Message types for messsages to/from the extension |
| * @const |
| * @enum {string} |
| */ |
| u2f.MessageTypes = { |
| 'U2F_REGISTER_REQUEST': 'u2f_register_request', |
| 'U2F_REGISTER_RESPONSE': 'u2f_register_response', |
| 'U2F_SIGN_REQUEST': 'u2f_sign_request', |
| 'U2F_SIGN_RESPONSE': 'u2f_sign_response', |
| 'U2F_GET_API_VERSION_REQUEST': 'u2f_get_api_version_request', |
| 'U2F_GET_API_VERSION_RESPONSE': 'u2f_get_api_version_response' |
| }; |
| |
| |
| /** |
| * Response status codes |
| * @const |
| * @enum {number} |
| */ |
| u2f.ErrorCodes = { |
| 'OK': 0, |
| 'OTHER_ERROR': 1, |
| 'BAD_REQUEST': 2, |
| 'CONFIGURATION_UNSUPPORTED': 3, |
| 'DEVICE_INELIGIBLE': 4, |
| 'TIMEOUT': 5 |
| }; |
| |
| |
| /** |
| * A message for registration requests |
| * @typedef {{ |
| * type: u2f.MessageTypes, |
| * appId: ?string, |
| * timeoutSeconds: ?number, |
| * requestId: ?number |
| * }} |
| */ |
| u2f.U2fRequest; |
| |
| |
| /** |
| * A message for registration responses |
| * @typedef {{ |
| * type: u2f.MessageTypes, |
| * responseData: (u2f.Error | u2f.RegisterResponse | u2f.SignResponse), |
| * requestId: ?number |
| * }} |
| */ |
| u2f.U2fResponse; |
| |
| |
| /** |
| * An error object for responses |
| * @typedef {{ |
| * errorCode: u2f.ErrorCodes, |
| * errorMessage: ?string |
| * }} |
| */ |
| u2f.Error; |
| |
| /** |
| * Data object for a single sign request. |
| * @typedef {enum {BLUETOOTH_RADIO, BLUETOOTH_LOW_ENERGY, USB, NFC}} |
| */ |
| u2f.Transport; |
| |
| |
| /** |
| * Data object for a single sign request. |
| * @typedef {Array<u2f.Transport>} |
| */ |
| u2f.Transports; |
| |
| /** |
| * Data object for a single sign request. |
| * @typedef {{ |
| * version: string, |
| * challenge: string, |
| * keyHandle: string, |
| * appId: string |
| * }} |
| */ |
| u2f.SignRequest; |
| |
| |
| /** |
| * Data object for a sign response. |
| * @typedef {{ |
| * keyHandle: string, |
| * signatureData: string, |
| * clientData: string |
| * }} |
| */ |
| u2f.SignResponse; |
| |
| |
| /** |
| * Data object for a registration request. |
| * @typedef {{ |
| * version: string, |
| * challenge: string |
| * }} |
| */ |
| u2f.RegisterRequest; |
| |
| |
| /** |
| * Data object for a registration response. |
| * @typedef {{ |
| * version: string, |
| * keyHandle: string, |
| * transports: Transports, |
| * appId: string |
| * }} |
| */ |
| u2f.RegisterResponse; |
| |
| |
| /** |
| * Data object for a registered key. |
| * @typedef {{ |
| * version: string, |
| * keyHandle: string, |
| * transports: ?Transports, |
| * appId: ?string |
| * }} |
| */ |
| u2f.RegisteredKey; |
| |
| |
| /** |
| * Data object for a get API register response. |
| * @typedef {{ |
| * js_api_version: number |
| * }} |
| */ |
| u2f.GetJsApiVersionResponse; |
| |
| |
| //Low level MessagePort API support |
| |
| /** |
| * Sets up a MessagePort to the U2F extension using the |
| * available mechanisms. |
| * @param {function((MessagePort|u2f.WrappedChromeRuntimePort_))} callback |
| */ |
| u2f.getMessagePort = function (callback) { |
| if (typeof chrome != 'undefined' && chrome.runtime) { |
| // The actual message here does not matter, but we need to get a reply |
| // for the callback to run. Thus, send an empty signature request |
| // in order to get a failure response. |
| var msg = { |
| type: u2f.MessageTypes.U2F_SIGN_REQUEST, |
| signRequests: [] |
| }; |
| chrome.runtime.sendMessage(u2f.EXTENSION_ID, msg, function () { |
| if (!chrome.runtime.lastError) { |
| // We are on a whitelisted origin and can talk directly |
| // with the extension. |
| u2f.getChromeRuntimePort_(callback); |
| } else { |
| // chrome.runtime was available, but we couldn't message |
| // the extension directly, use iframe |
| u2f.getIframePort_(callback); |
| } |
| }); |
| } else if (u2f.isAndroidChrome_()) { |
| u2f.getAuthenticatorPort_(callback); |
| } else if (u2f.isIosChrome_()) { |
| u2f.getIosPort_(callback); |
| } else { |
| // chrome.runtime was not available at all, which is normal |
| // when this origin doesn't have access to any extensions. |
| u2f.getIframePort_(callback); |
| } |
| }; |
| |
| /** |
| * Detect chrome running on android based on the browser's useragent. |
| * @private |
| */ |
| u2f.isAndroidChrome_ = function () { |
| var userAgent = navigator.userAgent; |
| return userAgent.indexOf('Chrome') != -1 && |
| userAgent.indexOf('Android') != -1; |
| }; |
| |
| /** |
| * Detect chrome running on iOS based on the browser's platform. |
| * @private |
| */ |
| u2f.isIosChrome_ = function () { |
| return ["iPhone", "iPad", "iPod"].indexOf(navigator.platform) > -1; |
| }; |
| |
| /** |
| * Connects directly to the extension via chrome.runtime.connect. |
| * @param {function(u2f.WrappedChromeRuntimePort_)} callback |
| * @private |
| */ |
| u2f.getChromeRuntimePort_ = function (callback) { |
| var port = chrome.runtime.connect(u2f.EXTENSION_ID, |
| { 'includeTlsChannelId': true }); |
| setTimeout(function () { |
| callback(new u2f.WrappedChromeRuntimePort_(port)); |
| }, 0); |
| }; |
| |
| /** |
| * Return a 'port' abstraction to the Authenticator app. |
| * @param {function(u2f.WrappedAuthenticatorPort_)} callback |
| * @private |
| */ |
| u2f.getAuthenticatorPort_ = function (callback) { |
| setTimeout(function () { |
| callback(new u2f.WrappedAuthenticatorPort_()); |
| }, 0); |
| }; |
| |
| /** |
| * Return a 'port' abstraction to the iOS client app. |
| * @param {function(u2f.WrappedIosPort_)} callback |
| * @private |
| */ |
| u2f.getIosPort_ = function (callback) { |
| setTimeout(function () { |
| callback(new u2f.WrappedIosPort_()); |
| }, 0); |
| }; |
| |
| /** |
| * A wrapper for chrome.runtime.Port that is compatible with MessagePort. |
| * @param {Port} port |
| * @constructor |
| * @private |
| */ |
| u2f.WrappedChromeRuntimePort_ = function (port) { |
| this.port_ = port; |
| }; |
| |
| /** |
| * Format and return a sign request compliant with the JS API version supported by the extension. |
| * @param {Array<u2f.SignRequest>} signRequests |
| * @param {number} timeoutSeconds |
| * @param {number} reqId |
| * @return {Object} |
| */ |
| u2f.formatSignRequest_ = |
| function (appId, challenge, registeredKeys, timeoutSeconds, reqId) { |
| if (js_api_version === undefined || js_api_version < 1.1) { |
| // Adapt request to the 1.0 JS API |
| var signRequests = []; |
| for (var i = 0; i < registeredKeys.length; i++) { |
| signRequests[i] = { |
| version: registeredKeys[i].version, |
| challenge: challenge, |
| keyHandle: registeredKeys[i].keyHandle, |
| appId: appId |
| }; |
| } |
| return { |
| type: u2f.MessageTypes.U2F_SIGN_REQUEST, |
| signRequests: signRequests, |
| timeoutSeconds: timeoutSeconds, |
| requestId: reqId |
| }; |
| } |
| // JS 1.1 API |
| return { |
| type: u2f.MessageTypes.U2F_SIGN_REQUEST, |
| appId: appId, |
| challenge: challenge, |
| registeredKeys: registeredKeys, |
| timeoutSeconds: timeoutSeconds, |
| requestId: reqId |
| }; |
| }; |
| |
| /** |
| * Format and return a register request compliant with the JS API version supported by the extension.. |
| * @param {Array<u2f.SignRequest>} signRequests |
| * @param {Array<u2f.RegisterRequest>} signRequests |
| * @param {number} timeoutSeconds |
| * @param {number} reqId |
| * @return {Object} |
| */ |
| u2f.formatRegisterRequest_ = |
| function (appId, registeredKeys, registerRequests, timeoutSeconds, reqId) { |
| if (js_api_version === undefined || js_api_version < 1.1) { |
| // Adapt request to the 1.0 JS API |
| for (var i = 0; i < registerRequests.length; i++) { |
| registerRequests[i].appId = appId; |
| } |
| var signRequests = []; |
| for (var i = 0; i < registeredKeys.length; i++) { |
| signRequests[i] = { |
| version: registeredKeys[i].version, |
| challenge: registerRequests[0], |
| keyHandle: registeredKeys[i].keyHandle, |
| appId: appId |
| }; |
| } |
| return { |
| type: u2f.MessageTypes.U2F_REGISTER_REQUEST, |
| signRequests: signRequests, |
| registerRequests: registerRequests, |
| timeoutSeconds: timeoutSeconds, |
| requestId: reqId |
| }; |
| } |
| // JS 1.1 API |
| return { |
| type: u2f.MessageTypes.U2F_REGISTER_REQUEST, |
| appId: appId, |
| registerRequests: registerRequests, |
| registeredKeys: registeredKeys, |
| timeoutSeconds: timeoutSeconds, |
| requestId: reqId |
| }; |
| }; |
| |
| |
| /** |
| * Posts a message on the underlying channel. |
| * @param {Object} message |
| */ |
| u2f.WrappedChromeRuntimePort_.prototype.postMessage = function (message) { |
| this.port_.postMessage(message); |
| }; |
| |
| |
| /** |
| * Emulates the HTML 5 addEventListener interface. Works only for the |
| * onmessage event, which is hooked up to the chrome.runtime.Port.onMessage. |
| * @param {string} eventName |
| * @param {function({data: Object})} handler |
| */ |
| u2f.WrappedChromeRuntimePort_.prototype.addEventListener = |
| function (eventName, handler) { |
| var name = eventName.toLowerCase(); |
| if (name == 'message' || name == 'onmessage') { |
| this.port_.onMessage.addListener(function (message) { |
| // Emulate a minimal MessageEvent object |
| handler({ 'data': message }); |
| }); |
| } else { |
| console.error('WrappedChromeRuntimePort only supports onMessage'); |
| } |
| }; |
| |
| /** |
| * Wrap the Authenticator app with a MessagePort interface. |
| * @constructor |
| * @private |
| */ |
| u2f.WrappedAuthenticatorPort_ = function () { |
| this.requestId_ = -1; |
| this.requestObject_ = null; |
| } |
| |
| /** |
| * Launch the Authenticator intent. |
| * @param {Object} message |
| */ |
| u2f.WrappedAuthenticatorPort_.prototype.postMessage = function (message) { |
| var intentUrl = |
| u2f.WrappedAuthenticatorPort_.INTENT_URL_BASE_ + |
| ';S.request=' + encodeURIComponent(JSON.stringify(message)) + |
| ';end'; |
| document.location = intentUrl; |
| }; |
| |
| /** |
| * Tells what type of port this is. |
| * @return {String} port type |
| */ |
| u2f.WrappedAuthenticatorPort_.prototype.getPortType = function () { |
| return "WrappedAuthenticatorPort_"; |
| }; |
| |
| |
| /** |
| * Emulates the HTML 5 addEventListener interface. |
| * @param {string} eventName |
| * @param {function({data: Object})} handler |
| */ |
| u2f.WrappedAuthenticatorPort_.prototype.addEventListener = function (eventName, handler) { |
| var name = eventName.toLowerCase(); |
| if (name == 'message') { |
| var self = this; |
| /* Register a callback to that executes when |
| * chrome injects the response. */ |
| window.addEventListener( |
| 'message', self.onRequestUpdate_.bind(self, handler), false); |
| } else { |
| console.error('WrappedAuthenticatorPort only supports message'); |
| } |
| }; |
| |
| /** |
| * Callback invoked when a response is received from the Authenticator. |
| * @param function({data: Object}) callback |
| * @param {Object} message message Object |
| */ |
| u2f.WrappedAuthenticatorPort_.prototype.onRequestUpdate_ = |
| function (callback, message) { |
| var messageObject = JSON.parse(message.data); |
| var intentUrl = messageObject['intentURL']; |
| |
| var errorCode = messageObject['errorCode']; |
| var responseObject = null; |
| if (messageObject.hasOwnProperty('data')) { |
| responseObject = /** @type {Object} */ ( |
| JSON.parse(messageObject['data'])); |
| } |
| |
| callback({ 'data': responseObject }); |
| }; |
| |
| /** |
| * Base URL for intents to Authenticator. |
| * @const |
| * @private |
| */ |
| u2f.WrappedAuthenticatorPort_.INTENT_URL_BASE_ = |
| 'intent:#Intent;action=com.google.android.apps.authenticator.AUTHENTICATE'; |
| |
| /** |
| * Wrap the iOS client app with a MessagePort interface. |
| * @constructor |
| * @private |
| */ |
| u2f.WrappedIosPort_ = function () { }; |
| |
| /** |
| * Launch the iOS client app request |
| * @param {Object} message |
| */ |
| u2f.WrappedIosPort_.prototype.postMessage = function (message) { |
| var str = JSON.stringify(message); |
| var url = "u2f://auth?" + encodeURI(str); |
| location.replace(url); |
| }; |
| |
| /** |
| * Tells what type of port this is. |
| * @return {String} port type |
| */ |
| u2f.WrappedIosPort_.prototype.getPortType = function () { |
| return "WrappedIosPort_"; |
| }; |
| |
| /** |
| * Emulates the HTML 5 addEventListener interface. |
| * @param {string} eventName |
| * @param {function({data: Object})} handler |
| */ |
| u2f.WrappedIosPort_.prototype.addEventListener = function (eventName, handler) { |
| var name = eventName.toLowerCase(); |
| if (name !== 'message') { |
| console.error('WrappedIosPort only supports message'); |
| } |
| }; |
| |
| /** |
| * Sets up an embedded trampoline iframe, sourced from the extension. |
| * @param {function(MessagePort)} callback |
| * @private |
| */ |
| u2f.getIframePort_ = function (callback) { |
| // Create the iframe |
| var iframeOrigin = 'chrome-extension://' + u2f.EXTENSION_ID; |
| var iframe = document.createElement('iframe'); |
| iframe.src = iframeOrigin + '/u2f-comms.html'; |
| iframe.setAttribute('style', 'display:none'); |
| document.body.appendChild(iframe); |
| |
| var channel = new MessageChannel(); |
| var ready = function (message) { |
| if (message.data == 'ready') { |
| channel.port1.removeEventListener('message', ready); |
| callback(channel.port1); |
| } else { |
| console.error('First event on iframe port was not "ready"'); |
| } |
| }; |
| channel.port1.addEventListener('message', ready); |
| channel.port1.start(); |
| |
| iframe.addEventListener('load', function () { |
| // Deliver the port to the iframe and initialize |
| iframe.contentWindow.postMessage('init', iframeOrigin, [channel.port2]); |
| }); |
| }; |
| |
| |
| //High-level JS API |
| |
| /** |
| * Default extension response timeout in seconds. |
| * @const |
| */ |
| u2f.EXTENSION_TIMEOUT_SEC = 30; |
| |
| /** |
| * A singleton instance for a MessagePort to the extension. |
| * @type {MessagePort|u2f.WrappedChromeRuntimePort_} |
| * @private |
| */ |
| u2f.port_ = null; |
| |
| /** |
| * Callbacks waiting for a port |
| * @type {Array<function((MessagePort|u2f.WrappedChromeRuntimePort_))>} |
| * @private |
| */ |
| u2f.waitingForPort_ = []; |
| |
| /** |
| * A counter for requestIds. |
| * @type {number} |
| * @private |
| */ |
| u2f.reqCounter_ = 0; |
| |
| /** |
| * A map from requestIds to client callbacks |
| * @type {Object.<number,(function((u2f.Error|u2f.RegisterResponse)) |
| * |function((u2f.Error|u2f.SignResponse)))>} |
| * @private |
| */ |
| u2f.callbackMap_ = {}; |
| |
| /** |
| * Creates or retrieves the MessagePort singleton to use. |
| * @param {function((MessagePort|u2f.WrappedChromeRuntimePort_))} callback |
| * @private |
| */ |
| u2f.getPortSingleton_ = function (callback) { |
| if (u2f.port_) { |
| callback(u2f.port_); |
| } else { |
| if (u2f.waitingForPort_.length == 0) { |
| u2f.getMessagePort(function (port) { |
| u2f.port_ = port; |
| u2f.port_.addEventListener('message', |
| /** @type {function(Event)} */(u2f.responseHandler_)); |
| |
| // Careful, here be async callbacks. Maybe. |
| while (u2f.waitingForPort_.length) |
| u2f.waitingForPort_.shift()(u2f.port_); |
| }); |
| } |
| u2f.waitingForPort_.push(callback); |
| } |
| }; |
| |
| /** |
| * Handles response messages from the extension. |
| * @param {MessageEvent.<u2f.Response>} message |
| * @private |
| */ |
| u2f.responseHandler_ = function (message) { |
| var response = message.data; |
| var reqId = response['requestId']; |
| if (!reqId || !u2f.callbackMap_[reqId]) { |
| console.error('Unknown or missing requestId in response.'); |
| return; |
| } |
| var cb = u2f.callbackMap_[reqId]; |
| delete u2f.callbackMap_[reqId]; |
| cb(response['responseData']); |
| }; |
| |
| /** |
| * Dispatches an array of sign requests to available U2F tokens. |
| * If the JS API version supported by the extension is unknown, it first sends a |
| * message to the extension to find out the supported API version and then it sends |
| * the sign request. |
| * @param {string=} appId |
| * @param {string=} challenge |
| * @param {Array<u2f.RegisteredKey>} registeredKeys |
| * @param {function((u2f.Error|u2f.SignResponse))} callback |
| * @param {number=} opt_timeoutSeconds |
| */ |
| u2f.sign = function (appId, challenge, registeredKeys, callback, opt_timeoutSeconds) { |
| if (js_api_version === undefined) { |
| // Send a message to get the extension to JS API version, then send the actual sign request. |
| u2f.getApiVersion( |
| function (response) { |
| js_api_version = response['js_api_version'] === undefined ? 0 : response['js_api_version']; |
| console.log("Extension JS API Version: ", js_api_version); |
| u2f.sendSignRequest(appId, challenge, registeredKeys, callback, opt_timeoutSeconds); |
| }); |
| } else { |
| // We know the JS API version. Send the actual sign request in the supported API version. |
| u2f.sendSignRequest(appId, challenge, registeredKeys, callback, opt_timeoutSeconds); |
| } |
| }; |
| |
| /** |
| * Dispatches an array of sign requests to available U2F tokens. |
| * @param {string=} appId |
| * @param {string=} challenge |
| * @param {Array<u2f.RegisteredKey>} registeredKeys |
| * @param {function((u2f.Error|u2f.SignResponse))} callback |
| * @param {number=} opt_timeoutSeconds |
| */ |
| u2f.sendSignRequest = function (appId, challenge, registeredKeys, callback, opt_timeoutSeconds) { |
| u2f.getPortSingleton_(function (port) { |
| var reqId = ++u2f.reqCounter_; |
| u2f.callbackMap_[reqId] = callback; |
| var timeoutSeconds = (typeof opt_timeoutSeconds !== 'undefined' ? |
| opt_timeoutSeconds : u2f.EXTENSION_TIMEOUT_SEC); |
| var req = u2f.formatSignRequest_(appId, challenge, registeredKeys, timeoutSeconds, reqId); |
| port.postMessage(req); |
| }); |
| }; |
| |
| /** |
| * Dispatches register requests to available U2F tokens. An array of sign |
| * requests identifies already registered tokens. |
| * If the JS API version supported by the extension is unknown, it first sends a |
| * message to the extension to find out the supported API version and then it sends |
| * the register request. |
| * @param {string=} appId |
| * @param {Array<u2f.RegisterRequest>} registerRequests |
| * @param {Array<u2f.RegisteredKey>} registeredKeys |
| * @param {function((u2f.Error|u2f.RegisterResponse))} callback |
| * @param {number=} opt_timeoutSeconds |
| */ |
| u2f.register = function (appId, registerRequests, registeredKeys, callback, opt_timeoutSeconds) { |
| if (js_api_version === undefined) { |
| // Send a message to get the extension to JS API version, then send the actual register request. |
| u2f.getApiVersion( |
| function (response) { |
| js_api_version = response['js_api_version'] === undefined ? 0 : response['js_api_version']; |
| console.log("Extension JS API Version: ", js_api_version); |
| u2f.sendRegisterRequest(appId, registerRequests, registeredKeys, |
| callback, opt_timeoutSeconds); |
| }); |
| } else { |
| // We know the JS API version. Send the actual register request in the supported API version. |
| u2f.sendRegisterRequest(appId, registerRequests, registeredKeys, |
| callback, opt_timeoutSeconds); |
| } |
| }; |
| |
| /** |
| * Dispatches register requests to available U2F tokens. An array of sign |
| * requests identifies already registered tokens. |
| * @param {string=} appId |
| * @param {Array<u2f.RegisterRequest>} registerRequests |
| * @param {Array<u2f.RegisteredKey>} registeredKeys |
| * @param {function((u2f.Error|u2f.RegisterResponse))} callback |
| * @param {number=} opt_timeoutSeconds |
| */ |
| u2f.sendRegisterRequest = function (appId, registerRequests, registeredKeys, callback, opt_timeoutSeconds) { |
| u2f.getPortSingleton_(function (port) { |
| var reqId = ++u2f.reqCounter_; |
| u2f.callbackMap_[reqId] = callback; |
| var timeoutSeconds = (typeof opt_timeoutSeconds !== 'undefined' ? |
| opt_timeoutSeconds : u2f.EXTENSION_TIMEOUT_SEC); |
| var req = u2f.formatRegisterRequest_( |
| appId, registeredKeys, registerRequests, timeoutSeconds, reqId); |
| port.postMessage(req); |
| }); |
| }; |
| |
| |
| /** |
| * Dispatches a message to the extension to find out the supported |
| * JS API version. |
| * If the user is on a mobile phone and is thus using Google Authenticator instead |
| * of the Chrome extension, don't send the request and simply return 0. |
| * @param {function((u2f.Error|u2f.GetJsApiVersionResponse))} callback |
| * @param {number=} opt_timeoutSeconds |
| */ |
| u2f.getApiVersion = function (callback, opt_timeoutSeconds) { |
| u2f.getPortSingleton_(function (port) { |
| // If we are using Android Google Authenticator or iOS client app, |
| // do not fire an intent to ask which JS API version to use. |
| if (port.getPortType) { |
| var apiVersion; |
| switch (port.getPortType()) { |
| case 'WrappedIosPort_': |
| case 'WrappedAuthenticatorPort_': |
| apiVersion = 1.1; |
| break; |
| |
| default: |
| apiVersion = 0; |
| break; |
| } |
| callback({ 'js_api_version': apiVersion }); |
| return; |
| } |
| var reqId = ++u2f.reqCounter_; |
| u2f.callbackMap_[reqId] = callback; |
| var req = { |
| type: u2f.MessageTypes.U2F_GET_API_VERSION_REQUEST, |
| timeoutSeconds: (typeof opt_timeoutSeconds !== 'undefined' ? |
| opt_timeoutSeconds : u2f.EXTENSION_TIMEOUT_SEC), |
| requestId: reqId |
| }; |
| port.postMessage(req); |
| }); |
| }; |
| |
| /** |
| * Modification: |
| * Assign u2f back to window (root) scope. |
| */ |
| root.u2f = u2f; |
| }(this)); |