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Code Issues Projects Releases Wiki Activity

local duo for iframe fixes

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This commit is contained in:
Kyle Spearrin 2017-07-25 22:54:08 -04:00
parent fc22114855
commit ef6cb3779b
3 changed files with 448 additions and 9 deletions
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25
gulpfile.js
View File

@ -69,8 +69,9 @@ gulp.task('min:js', ['clean:js'], function () {
[
paths.js,
'!' + paths.minJs,
'!' + paths.webroot + 'js/fallback*.js',
'!' + paths.webroot + 'js/u2f-connector.js'
'!' + paths.jsDir + 'fallback*.js',
'!' + paths.jsDir + 'u2f-connector.js',
'!' + paths.jsDir + 'duo.js'
], { base: '.' })
.pipe(concat(paths.concatJsDest))
.pipe(uglify())
@ -179,8 +180,12 @@ gulp.task('lib', ['clean:lib'], function () {
],
dest: paths.libDir + 'angulartics'
},
//{
// src: paths.npmDir + 'duo_web_sdk/index.js',
// dest: paths.libDir + 'duo'
//},
{
src: paths.npmDir + 'duo_web_sdk/index.js',
src: paths.jsDir + 'duo.js',
dest: paths.libDir + 'duo'
},
{
@ -319,12 +324,16 @@ gulp.task('dist:move', function () {
src: paths.npmDir + 'node-forge/dist/prime.worker.*',
dest: paths.dist + 'lib/forge'
},
//{
// src: paths.npmDir + 'duo_web_sdk/index.js',
// dest: paths.dist + 'lib/duo'
//},
{
src: paths.npmDir + 'duo_web_sdk/index.js',
dest: paths.dist + 'lib/duo'
src: paths.jsDir + 'duo.js',
dest: paths.dist + 'js'
},
{
src: paths.webroot + 'js/bw.min.js',
src: paths.jsDir + 'bw.min.js',
dest: paths.dist + 'js'
},
{
@ -380,7 +389,7 @@ gulp.task('dist:js:app', function () {
gulp.task('dist:js:fallback', function () {
var mainStream = gulp
.src([
paths.webroot + 'js/fallback*.js'
paths.jsDir + 'fallback*.js'
]);
merge(mainStream)
@ -393,7 +402,7 @@ gulp.task('dist:js:fallback', function () {
gulp.task('dist:js:u2f', function () {
var mainStream = gulp
.src([
paths.webroot + 'js/u2f*.js'
paths.jsDir + 'u2f*.js'
]);
merge(mainStream)

2
src/duo-connector.html
View File

@ -25,7 +25,7 @@
</style>
</head>
<body>
<script src="lib/duo/index.js"></script>
<script src="js/duo.js"></script>
<script>
!(function () {
var frameElement = document.createElement('iframe');

430
src/js/duo.js Normal file
View File

@ -0,0 +1,430 @@
/**
* Duo Web SDK v2
* Copyright 2017, Duo Security
*/
(function (root, factory) {
/*eslint-disable */
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define([], factory);
/*eslint-enable */
} else if (typeof module === 'object' && module.exports) {
// Node. Does not work with strict CommonJS, but
// only CommonJS-like environments that support module.exports,
// like Node.
module.exports = factory();
} else {
// Browser globals (root is window)
var Duo = factory();
// If the Javascript was loaded via a script tag, attempt to autoload
// the frame.
Duo._onReady(Duo.init);
// Attach Duo to the `window` object
root.Duo = Duo;
}
}(this, function() {
var DUO_MESSAGE_FORMAT = /^(?:AUTH|ENROLL)+\|[A-Za-z0-9\+\/=]+\|[A-Za-z0-9\+\/=]+$/;
var DUO_ERROR_FORMAT = /^ERR\|[\w\s\.\(\)]+$/;
var DUO_OPEN_WINDOW_FORMAT = /^DUO_OPEN_WINDOW\|/;
var VALID_OPEN_WINDOW_DOMAINS = [
'duo.com',
'duosecurity.com',
'duomobile.s3-us-west-1.amazonaws.com'
];
var iframeId = 'duo_iframe',
postAction = '',
postArgument = 'sig_response',
host,
sigRequest,
duoSig,
appSig,
iframe,
submitCallback;
function throwError(message, url) {
throw new Error(
'Duo Web SDK error: ' + message +
(url ? ('\n' + 'See ' + url + ' for more information') : '')
);
}
function hyphenize(str) {
return str.replace(/([a-z])([A-Z])/, '$1-$2').toLowerCase();
}
// cross-browser data attributes
function getDataAttribute(element, name) {
if ('dataset' in element) {
return element.dataset[name];
} else {
return element.getAttribute('data-' + hyphenize(name));
}
}
// cross-browser event binding/unbinding
function on(context, event, fallbackEvent, callback) {
if ('addEventListener' in window) {
context.addEventListener(event, callback, false);
} else {
context.attachEvent(fallbackEvent, callback);
}
}
function off(context, event, fallbackEvent, callback) {
if ('removeEventListener' in window) {
context.removeEventListener(event, callback, false);
} else {
context.detachEvent(fallbackEvent, callback);
}
}
function onReady(callback) {
on(document, 'DOMContentLoaded', 'onreadystatechange', callback);
}
function offReady(callback) {
off(document, 'DOMContentLoaded', 'onreadystatechange', callback);
}
function onMessage(callback) {
on(window, 'message', 'onmessage', callback);
}
function offMessage(callback) {
off(window, 'message', 'onmessage', callback);
}
/**
* Parse the sig_request parameter, throwing errors if the token contains
* a server error or if the token is invalid.
*
* @param {String} sig Request token
*/
function parseSigRequest(sig) {
if (!sig) {
// nothing to do
return;
}
// see if the token contains an error, throwing it if it does
if (sig.indexOf('ERR|') === 0) {
throwError(sig.split('|')[1]);
}
// validate the token
if (sig.indexOf(':') === -1 || sig.split(':').length !== 2) {
throwError(
'Duo was given a bad token. This might indicate a configuration ' +
'problem with one of Duo\'s client libraries.',
'https://www.duosecurity.com/docs/duoweb#first-steps'
);
}
var sigParts = sig.split(':');
// hang on to the token, and the parsed duo and app sigs
sigRequest = sig;
duoSig = sigParts[0];
appSig = sigParts[1];
return {
sigRequest: sig,
duoSig: sigParts[0],
appSig: sigParts[1]
};
}
/**
* This function is set up to run when the DOM is ready, if the iframe was
* not available during `init`.
*/
function onDOMReady() {
iframe = document.getElementById(iframeId);
if (!iframe) {
throw new Error(
'This page does not contain an iframe for Duo to use.' +
'Add an element like <iframe id="duo_iframe"></iframe> ' +
'to this page. ' +
'See https://www.duosecurity.com/docs/duoweb#3.-show-the-iframe ' +
'for more information.'
);
}
// we've got an iframe, away we go!
ready();
// always clean up after yourself
offReady(onDOMReady);
}
/**
* Validate that a MessageEvent came from the Duo service, and that it
* is a properly formatted payload.
*
* The Google Chrome sign-in page injects some JS into pages that also
* make use of postMessage, so we need to do additional validation above
* and beyond the origin.
*
* @param {MessageEvent} event Message received via postMessage
*/
function isDuoMessage(event) {
return Boolean(
event.origin === ('https://' + host) &&
typeof event.data === 'string' &&
(
event.data.match(DUO_MESSAGE_FORMAT) ||
event.data.match(DUO_ERROR_FORMAT) ||
event.data.match(DUO_OPEN_WINDOW_FORMAT)
)
);
}
/**
* Validate the request token and prepare for the iframe to become ready.
*
* All options below can be passed into an options hash to `Duo.init`, or
* specified on the iframe using `data-` attributes.
*
* Options specified using the options hash will take precedence over
* `data-` attributes.
*
* Example using options hash:
* ```javascript
* Duo.init({
* iframe: "some_other_id",
* host: "api-main.duo.test",
* sig_request: "...",
* post_action: "/auth",
* post_argument: "resp"
* });
* ```
*
* Example using `data-` attributes:
* ```
* <iframe id="duo_iframe"
* data-host="api-main.duo.test"
* data-sig-request="..."
* data-post-action="/auth"
* data-post-argument="resp"
* >
* </iframe>
* ```
*
* @param {Object} options
* @param {String} options.iframe The iframe, or id of an iframe to set up
* @param {String} options.host Hostname
* @param {String} options.sig_request Request token
* @param {String} [options.post_action=''] URL to POST back to after successful auth
* @param {String} [options.post_argument='sig_response'] Parameter name to use for response token
* @param {Function} [options.submit_callback] If provided, duo will not submit the form instead execute
* the callback function with reference to the "duo_form" form object
* submit_callback can be used to prevent the webpage from reloading.
*/
function init(options) {
if (options) {
if (options.host) {
host = options.host;
}
if (options.sig_request) {
parseSigRequest(options.sig_request);
}
if (options.post_action) {
postAction = options.post_action;
}
if (options.post_argument) {
postArgument = options.post_argument;
}
if (options.iframe) {
if (options.iframe.tagName) {
iframe = options.iframe;
} else if (typeof options.iframe === 'string') {
iframeId = options.iframe;
}
}
if (typeof options.submit_callback === 'function') {
submitCallback = options.submit_callback;
}
}
// if we were given an iframe, no need to wait for the rest of the DOM
if (false && iframe) {
ready();
} else {
// try to find the iframe in the DOM
iframe = document.getElementById(iframeId);
// iframe is in the DOM, away we go!
if (iframe) {
ready();
} else {
// wait until the DOM is ready, then try again
onReady(onDOMReady);
}
}
// always clean up after yourself!
offReady(init);
}
/**
* This function is called when a message was received from another domain
* using the `postMessage` API. Check that the event came from the Duo
* service domain, and that the message is a properly formatted payload,
* then perform the post back to the primary service.
*
* @param event Event object (contains origin and data)
*/
function onReceivedMessage(event) {
if (isDuoMessage(event)) {
if (event.data.match(DUO_OPEN_WINDOW_FORMAT)) {
var url = event.data.substring("DUO_OPEN_WINDOW|".length);
if (isValidUrlToOpen(url)) {
// Open the URL that comes after the DUO_WINDOW_OPEN token.
window.open(url, "_self");
}
}
else {
// the event came from duo, do the post back
doPostBack(event.data);
// always clean up after yourself!
offMessage(onReceivedMessage);
}
}
}
/**
* Validate that this passed in URL is one that we will actually allow to
* be opened.
* @param url String URL that the message poster wants to open
* @returns {boolean} true if we allow this url to be opened in the window
*/
function isValidUrlToOpen(url) {
if (!url) {
return false;
}
var parser = document.createElement('a');
parser.href = url;
if (parser.protocol === "duotrustedendpoints:") {
return true;
} else if (parser.protocol !== "https:") {
return false;
}
for (var i = 0; i < VALID_OPEN_WINDOW_DOMAINS.length; i++) {
if (parser.hostname.endsWith("." + VALID_OPEN_WINDOW_DOMAINS[i]) ||
parser.hostname === VALID_OPEN_WINDOW_DOMAINS[i]) {
return true;
}
}
return false;
}
/**
* Point the iframe at Duo, then wait for it to postMessage back to us.
*/
function ready() {
if (!host) {
host = getDataAttribute(iframe, 'host');
if (!host) {
throwError(
'No API hostname is given for Duo to use. Be sure to pass ' +
'a `host` parameter to Duo.init, or through the `data-host` ' +
'attribute on the iframe element.',
'https://www.duosecurity.com/docs/duoweb#3.-show-the-iframe'
);
}
}
if (!duoSig || !appSig) {
parseSigRequest(getDataAttribute(iframe, 'sigRequest'));
if (!duoSig || !appSig) {
throwError(
'No valid signed request is given. Be sure to give the ' +
'`sig_request` parameter to Duo.init, or use the ' +
'`data-sig-request` attribute on the iframe element.',
'https://www.duosecurity.com/docs/duoweb#3.-show-the-iframe'
);
}
}
// if postAction/Argument are defaults, see if they are specified
// as data attributes on the iframe
if (postAction === '') {
postAction = getDataAttribute(iframe, 'postAction') || postAction;
}
if (postArgument === 'sig_response') {
postArgument = getDataAttribute(iframe, 'postArgument') || postArgument;
}
// point the iframe at Duo
iframe.src = [
'https://', host, '/frame/web/v1/auth?tx=', duoSig,
'&parent=', encodeURIComponent(document.location.href),
'&v=2.6'
].join('');
// listen for the 'message' event
onMessage(onReceivedMessage);
}
/**
* We received a postMessage from Duo. POST back to the primary service
* with the response token, and any additional user-supplied parameters
* given in form#duo_form.
*/
function doPostBack(response) {
// create a hidden input to contain the response token
var input = document.createElement('input');
input.type = 'hidden';
input.name = postArgument;
input.value = response + ':' + appSig;
// user may supply their own form with additional inputs
var form = document.getElementById('duo_form');
// if the form doesn't exist, create one
if (!form) {
form = document.createElement('form');
// insert the new form after the iframe
iframe.parentElement.insertBefore(form, iframe.nextSibling);
}
// make sure we are actually posting to the right place
form.method = 'POST';
form.action = postAction;
// add the response token input to the form
form.appendChild(input);
// away we go!
if (typeof submitCallback === "function") {
submitCallback.call(null, form);
} else {
form.submit();
}
}
return {
init: init,
_onReady: onReady,
_parseSigRequest: parseSigRequest,
_isDuoMessage: isDuoMessage,
_doPostBack: doPostBack
};
}));