mirror of
https://github.com/dani-garcia/vaultwarden.git
synced 2024-12-27 12:42:41 +00:00
431 lines
14 KiB
JavaScript
431 lines
14 KiB
JavaScript
/**
|
|
* 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
|
|
};
|
|
}));
|