aboutsummaryrefslogtreecommitdiffstats
path: root/packages/website/ts/vendor/u2f_api.js
diff options
context:
space:
mode:
Diffstat (limited to 'packages/website/ts/vendor/u2f_api.js')
-rw-r--r--packages/website/ts/vendor/u2f_api.js760
1 files changed, 760 insertions, 0 deletions
diff --git a/packages/website/ts/vendor/u2f_api.js b/packages/website/ts/vendor/u2f_api.js
new file mode 100644
index 000000000..3b538d817
--- /dev/null
+++ b/packages/website/ts/vendor/u2f_api.js
@@ -0,0 +1,760 @@
+//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
+
+/**
+ * @fileoverview The U2F api.
+ */
+'use strict';
+
+
+/**
+ * Namespace for the U2F api.
+ * @type {Object}
+ */
+var u2f = u2f || {};
+
+/**
+ * Require integration
+ */
+if (typeof module != "undefined") {
+ module.exports = u2f;
+}
+
+/**
+ * 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';
+*/
+u2f.WrappedAuthenticatorPort_.INTENT_URL_BASE_ =
+ 'intent:#Intent;action=com.ledger.android.u2f.bridge.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);
+ });
+};