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jwt.js
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jwt.js
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// Imports
import Keycloak from '@redhat-cloud-services/keycloak-js';
import { BroadcastChannel } from 'broadcast-channel';
import cookie from 'js-cookie';
import { pageRequiresAuthentication } from '../utils';
import * as Sentry from '@sentry/browser';
import { GLOBAL_FILTER_KEY } from '../App/GlobalFilter/constants';
import { deleteLocalStorageItems } from '../utils';
import logger from './logger';
// Insights Specific
import insightsUrl from './insights/url';
import insightsUser from './insights/user';
import urijs from 'urijs';
import { DEFAULT_ROUTES, options as defaultOptions } from './constants';
const log = logger('jwt.js');
const DEFAULT_COOKIE_NAME = 'cs_jwt';
const priv = {};
// Broadcast Channel
const authChannel = new BroadcastChannel('auth');
authChannel.onmessage = (e) => {
if (e && e.data && e.data.type) {
log(`BroadcastChannel, Received event : ${e.data.type}`);
switch (e.data.type) {
case 'logout':
return logout();
case 'login':
return login();
case 'refresh':
return updateToken();
}
}
};
export function decodeToken(str) {
str = str.split('.')[1];
str = str.replace('/-/g', '+');
str = str.replace('/_/g', '/');
switch (str.length % 4) {
case 0:
break;
case 2:
str += '==';
break;
case 3:
str += '=';
break;
default:
throw 'Invalid token';
}
str = (str + '===').slice(0, str.length + (str.length % 4));
str = str.replace(/-/g, '+').replace(/_/g, '/');
str = decodeURIComponent(escape(atob(str)));
str = JSON.parse(str);
return str;
}
export const doOffline = (key, val) => {
const url = urijs(window.location.href);
url.removeSearch(key);
url.addSearch(key, val);
const options = {
...defaultOptions,
promiseType: 'native',
redirectUri: url.toString(),
url: insightsUrl(DEFAULT_ROUTES),
};
const kc = Keycloak(options);
kc.init(options).then(() => {
kc.login({
scope: 'offline_access',
});
});
};
/*** Initialization ***/
export const init = (options) => {
log('Initializing');
const cookieName = options.cookieName ? options.cookieName : DEFAULT_COOKIE_NAME;
priv.cookie = {
cookieName,
};
//constructor for new Keycloak Object?
options.url = insightsUrl(options.routes ? options.routes : DEFAULT_ROUTES);
options.clientId = 'cloud-services';
options.realm = 'redhat-external';
//options for keycloak.init method
options.promiseType = 'native';
options.onLoad = 'check-sso';
options.checkLoginIframe = false;
const isBeta = window.location.pathname.split('/')[1] === 'beta' ? '/beta' : '';
options.silentCheckSsoRedirectUri = `${window.location.origin}${isBeta}/silent-check-sso.html`;
if (window.localStorage && window.localStorage.getItem('chrome:jwt:shortSession') === 'true') {
options.realm = 'short-session';
}
//priv.keycloak = Keycloak(options);
priv.keycloak = Keycloak(options);
priv.keycloak.onTokenExpired = updateToken;
priv.keycloak.onAuthSuccess = loginAllTabs;
priv.keycloak.onAuthRefreshSuccess = refreshTokens;
if (options.token) {
if (isExistingValid(options.token)) {
// we still need to init async
// so that the renewal times and such fire
priv.keycloak.init(options);
return new Promise((resolve) => {
// Here we have an existing key
// We need to set up some of the keycloak state
// so that the reset of the methods that Chrome uses
// to check if things are good get faked out
// TODO reafctor the direct access to priv.keycloak
// away from the users
priv.keycloak.authenticated = true;
priv.keycloak.token = options.token;
resolve();
});
} else {
delete options.token;
}
}
return priv.keycloak.init(options).then(initSuccess).catch(initError);
};
function isExistingValid(token) {
log('Checking validity of existing JWT');
try {
if (!token) {
return false;
}
const parsed = decodeToken(token);
if (!parsed.exp) {
return false;
}
// Date.now() has extra precision...
// it includes milis
// we need to trim it down to valid seconds from epoch
// because we compare to KC's exp which is seconds from epoch
const now = Date.now().toString().substr(0, 10);
const exp = parsed.exp - now;
log(`Token expires in ${exp}`);
// We want to invalidate tokens if they are getting close
// to the expiry time
// So that we can be someone safe from time skew
// issues on our APIs
// i.e. the client could have a slight time skew
// and the API is true (because NTP) and we could send down
// a JWT that is actually exipred
if (exp > 90) {
priv.keycloak.tokenParsed = parsed;
return true;
} else {
if (exp > 0) {
log('token is expiring in < 90 seconds');
} else {
log('token is expired');
}
return false;
}
} catch (e) {
log(e);
return false;
}
}
// keycloak init successful
function initSuccess() {
log('JWT Initialized');
setCookie(priv.keycloak.token);
setRefresh(priv.keycloak.refreshToken);
}
// keycloak init failed
function initError() {
log('JWT init error');
logout();
}
/*** Login/Logout ***/
export function login() {
log('Logging in');
// Redirect to login
cookie.set('cs_loggedOut', 'false');
return priv.keycloak.login({ redirectUri: location.href });
}
function logout(bounce) {
log('Logging out');
// Clear cookies and tokens
priv.keycloak.clearToken();
cookie.remove(priv.cookie.cookieName);
const isBeta = window.location.pathname.split('/')[1] === 'beta' ? '/beta' : '';
const keys = Object.keys(localStorage).filter(
(key) =>
key.endsWith('/api/entitlements/v1/services') ||
key.endsWith('/config/main.yml') ||
key.endsWith('/chrome') ||
key.endsWith('/chrome-store') ||
key.startsWith('kc-callback') ||
key.startsWith(GLOBAL_FILTER_KEY)
);
deleteLocalStorageItems(keys);
// Redirect to logout
if (bounce) {
let eightSeconds = new Date(new Date().getTime() + 8 * 1000);
cookie.set('cs_loggedOut', 'true', {
expires: eightSeconds,
});
priv.keycloak.logout({
redirectUri: `https://${window.location.host}${isBeta}`,
});
}
}
export const logoutAllTabs = (bounce) => {
authChannel.postMessage({ type: 'logout' });
logout(bounce);
};
function loginAllTabs() {
authChannel.postMessage({ type: 'login' });
}
/*** User Functions ***/
// Get user information
export const getUserInfo = () => {
log('Getting User Information');
const jwtCookie = cookie.get(DEFAULT_COOKIE_NAME);
if (jwtCookie && isExistingValid(jwtCookie) && isExistingValid(priv.keycloak.token)) {
return insightsUser(priv.keycloak.tokenParsed);
}
return updateToken()
.then(() => {
insightsUser(priv.keycloak.tokenParsed);
log('Successfully updated token');
})
.catch(() => {
if (pageRequiresAuthentication()) {
log('Trying to log in user to refresh token');
return login();
}
});
};
// Check to see if the user is loaded, this is what API calls should wait on
export const isAuthenticated = () => {
log(`User Ready: ${priv.keycloak.authenticated}`);
return priv.keycloak.authenticated;
};
/*** Check Token Status ***/
// If a token is expired, logout of all tabs
export const expiredToken = () => {
log('Token has expired, trying to log out');
logout();
};
// Broadcast message to refresh tokens across tabs
function refreshTokens() {
authChannel.postMessage({ type: 'refresh' });
}
// Actually update the token
function updateToken() {
return priv.keycloak
.updateToken()
.then((refreshed) => {
// Important! after we update the token
// we have to again populate the Cookie!
// Otherwise we just update and dont send
// the updated token down stream... and things 401
setCookie(priv.keycloak.token);
log('Attempting to update token');
if (refreshed) {
log('Token was successfully refreshed');
} else {
log('Token is still valid, not updating');
}
})
.catch(() => {
/**
* The "priv.keycloak.updateToken" promise does not return any error message
*/
log('Token update failed');
});
}
function getCookieExpires(exp) {
// we want the cookie to expire at the same time as the JWT session
// so we take the exp and get a new GTMString from that
const date = new Date(0);
date.setUTCSeconds(exp);
return date.toGMTString();
}
// Set the cookie for 3scale
function setCookie(token) {
log('Setting the cs_jwt cookie');
if (token && token.length > 10) {
const cookieString = `${priv.cookie.cookieName}=${token};`
+ `path=/;`
+ `expires=${getCookieExpires(decodeToken(token).exp)}`;
setCookieWrapper(cookieString);
}
}
function setRefresh(refreshToken) {
log('Setting the refresh token');
cookie.set('cs_jwt_refresh', refreshToken, { secure: true });
}
// do this so we can mock out for test
function setCookieWrapper(str) {
document.cookie = str;
}
// Encoded WIP
export const getEncodedToken = () => {
log('Trying to get the encoded token');
if (!isExistingValid(priv.keycloak.token)) {
Sentry.captureException(new Error('Fetching token failed - expired token'));
log('Failed to get encoded token');
updateToken();
}
return priv.keycloak.token;
};
// Keycloak server URL
export const getUrl = () => {
return insightsUrl(DEFAULT_ROUTES);
};