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keycloak.js
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/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
(function( window, undefined ) {
var Keycloak = function (config) {
if (!(this instanceof Keycloak)) {
return new Keycloak(config);
}
var kc = this;
var adapter;
var refreshQueue = [];
var callbackStorage;
var loginIframe = {
enable: true,
callbackList: [],
interval: 5
};
kc.init = function (initOptions) {
kc.authenticated = false;
callbackStorage = createCallbackStorage();
if (initOptions && initOptions.adapter === 'cordova') {
adapter = loadAdapter('cordova');
} else if (initOptions && initOptions.adapter === 'default') {
adapter = loadAdapter();
} else {
if (window.Cordova) {
adapter = loadAdapter('cordova');
} else {
adapter = loadAdapter();
}
}
if (initOptions) {
if (typeof initOptions.checkLoginIframe !== 'undefined') {
loginIframe.enable = initOptions.checkLoginIframe;
}
if (initOptions.checkLoginIframeInterval) {
loginIframe.interval = initOptions.checkLoginIframeInterval;
}
if (initOptions.onLoad === 'login-required') {
kc.loginRequired = true;
}
if (initOptions.responseMode) {
if (initOptions.responseMode === 'query' || initOptions.responseMode === 'fragment') {
kc.responseMode = initOptions.responseMode;
} else {
throw 'Invalid value for responseMode';
}
}
if (initOptions.flow) {
switch (initOptions.flow) {
case 'standard':
kc.responseType = 'code';
break;
case 'implicit':
kc.responseType = 'id_token token';
break;
case 'hybrid':
kc.responseType = 'code id_token token';
break;
default:
throw 'Invalid value for flow';
}
kc.flow = initOptions.flow;
}
}
if (!kc.responseMode) {
kc.responseMode = 'fragment';
}
if (!kc.responseType) {
kc.responseType = 'code';
kc.flow = 'standard';
}
var promise = createPromise();
var initPromise = createPromise();
initPromise.promise.success(function() {
kc.onReady && kc.onReady(kc.authenticated);
promise.setSuccess(kc.authenticated);
}).error(function(errorData) {
promise.setError(errorData);
});
var configPromise = loadConfig(config);
function onLoad() {
var doLogin = function(prompt) {
if (!prompt) {
options.prompt = 'none';
}
kc.login(options).success(function () {
initPromise.setSuccess();
}).error(function () {
initPromise.setError();
});
}
var options = {};
switch (initOptions.onLoad) {
case 'check-sso':
if (loginIframe.enable) {
setupCheckLoginIframe().success(function() {
checkLoginIframe().success(function () {
doLogin(false);
}).error(function () {
initPromise.setSuccess();
});
});
} else {
doLogin(false);
}
break;
case 'login-required':
doLogin(true);
break;
default:
throw 'Invalid value for onLoad';
}
}
function processInit() {
var callback = parseCallback(window.location.href);
if (callback) {
setupCheckLoginIframe();
window.history.replaceState({}, null, callback.newUrl);
processCallback(callback, initPromise);
return;
} else if (initOptions) {
if (initOptions.token || initOptions.refreshToken) {
setToken(initOptions.token, initOptions.refreshToken, initOptions.idToken);
if (loginIframe.enable) {
setupCheckLoginIframe().success(function() {
checkLoginIframe().success(function () {
kc.onAuthSuccess && kc.onAuthSuccess();
initPromise.setSuccess();
}).error(function () {
kc.onAuthError && kc.onAuthError();
if (initOptions.onLoad) {
onLoad();
} else {
initPromise.setError();
}
});
});
} else {
kc.updateToken(-1).success(function() {
kc.onAuthSuccess && kc.onAuthSuccess();
initPromise.setSuccess();
}).error(function() {
kc.onAuthError && kc.onAuthError();
if (initOptions.onLoad) {
onLoad();
} else {
initPromise.setError();
}
});
}
} else if (initOptions.onLoad) {
onLoad();
} else {
initPromise.setSuccess();
}
} else {
initPromise.setSuccess();
}
}
configPromise.success(processInit);
configPromise.error(function() {
promise.setError();
});
return promise.promise;
}
kc.login = function (options) {
return adapter.login(options);
}
kc.createLoginUrl = function(options) {
var state = createUUID();
var nonce = createUUID();
var redirectUri = adapter.redirectUri(options);
var callbackState = {
state: state,
nonce: nonce,
redirectUri: encodeURIComponent(redirectUri),
}
if (options && options.prompt) {
callbackState.prompt = options.prompt;
}
callbackStorage.add(callbackState);
var action = 'auth';
if (options && options.action == 'register') {
action = 'registrations';
}
var scope = (options && options.scope) ? "openid " + options.scope : "openid";
var url = getRealmUrl()
+ '/protocol/openid-connect/' + action
+ '?client_id=' + encodeURIComponent(kc.clientId)
+ '&redirect_uri=' + encodeURIComponent(redirectUri)
+ '&state=' + encodeURIComponent(state)
+ '&nonce=' + encodeURIComponent(nonce)
+ '&response_mode=' + encodeURIComponent(kc.responseMode)
+ '&response_type=' + encodeURIComponent(kc.responseType)
+ '&scope=' + encodeURIComponent(scope);
if (options && options.prompt) {
url += '&prompt=' + encodeURIComponent(options.prompt);
}
if (options && options.maxAge) {
url += '&max_age=' + encodeURIComponent(options.maxAge);
}
if (options && options.loginHint) {
url += '&login_hint=' + encodeURIComponent(options.loginHint);
}
if (options && options.idpHint) {
url += '&kc_idp_hint=' + encodeURIComponent(options.idpHint);
}
if (options && options.locale) {
url += '&ui_locales=' + encodeURIComponent(options.locale);
}
return url;
}
kc.logout = function(options) {
return adapter.logout(options);
}
kc.createLogoutUrl = function(options) {
var url = getRealmUrl()
+ '/protocol/openid-connect/logout'
+ '?redirect_uri=' + encodeURIComponent(adapter.redirectUri(options, false));
return url;
}
kc.register = function (options) {
return adapter.register(options);
}
kc.createRegisterUrl = function(options) {
if (!options) {
options = {};
}
options.action = 'register';
return kc.createLoginUrl(options);
}
kc.createAccountUrl = function(options) {
var url = getRealmUrl()
+ '/account'
+ '?referrer=' + encodeURIComponent(kc.clientId)
+ '&referrer_uri=' + encodeURIComponent(adapter.redirectUri(options));
return url;
}
kc.accountManagement = function() {
return adapter.accountManagement();
}
kc.hasRealmRole = function (role) {
var access = kc.realmAccess;
return !!access && access.roles.indexOf(role) >= 0;
}
kc.hasResourceRole = function(role, resource) {
if (!kc.resourceAccess) {
return false;
}
var access = kc.resourceAccess[resource || kc.clientId];
return !!access && access.roles.indexOf(role) >= 0;
}
kc.loadUserProfile = function() {
var url = getRealmUrl() + '/account';
var req = new XMLHttpRequest();
req.open('GET', url, true);
req.setRequestHeader('Accept', 'application/json');
req.setRequestHeader('Authorization', 'bearer ' + kc.token);
var promise = createPromise();
req.onreadystatechange = function () {
if (req.readyState == 4) {
if (req.status == 200) {
kc.profile = JSON.parse(req.responseText);
promise.setSuccess(kc.profile);
} else {
promise.setError();
}
}
}
req.send();
return promise.promise;
}
kc.loadUserInfo = function() {
var url = getRealmUrl() + '/protocol/openid-connect/userinfo';
var req = new XMLHttpRequest();
req.open('GET', url, true);
req.setRequestHeader('Accept', 'application/json');
req.setRequestHeader('Authorization', 'bearer ' + kc.token);
var promise = createPromise();
req.onreadystatechange = function () {
if (req.readyState == 4) {
if (req.status == 200) {
kc.userInfo = JSON.parse(req.responseText);
promise.setSuccess(kc.userInfo);
} else {
promise.setError();
}
}
}
req.send();
return promise.promise;
}
kc.isTokenExpired = function(minValidity) {
if (!kc.tokenParsed || (!kc.refreshToken && kc.flow != 'implicit' )) {
throw 'Not authenticated';
}
var expiresIn = kc.tokenParsed['exp'] - Math.ceil(new Date().getTime() / 1000) + kc.timeSkew;
if (minValidity) {
expiresIn -= minValidity;
}
return expiresIn < 0;
}
kc.updateToken = function(minValidity) {
var promise = createPromise();
if (!kc.tokenParsed || !kc.refreshToken) {
promise.setError();
return promise.promise;
}
minValidity = minValidity || 5;
var exec = function() {
var refreshToken = false;
if (kc.timeSkew == -1) {
console.info('Skew ' + kc.timeSkew);
refreshToken = true;
console.info('[KEYCLOAK] Refreshing token: time skew not set');
} else if (minValidity == -1) {
refreshToken = true;
console.info('[KEYCLOAK] Refreshing token: forced refresh');
} else if (kc.isTokenExpired(minValidity)) {
refreshToken = true;
console.info('[KEYCLOAK] Refreshing token: token expired');
}
if (!refreshToken) {
promise.setSuccess(false);
} else {
var params = 'grant_type=refresh_token&' + 'refresh_token=' + kc.refreshToken;
var url = getRealmUrl() + '/protocol/openid-connect/token';
refreshQueue.push(promise);
if (refreshQueue.length == 1) {
var req = new XMLHttpRequest();
req.open('POST', url, true);
req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
req.withCredentials = true;
if (kc.clientId && kc.clientSecret) {
req.setRequestHeader('Authorization', 'Basic ' + btoa(kc.clientId + ':' + kc.clientSecret));
} else {
params += '&client_id=' + encodeURIComponent(kc.clientId);
}
var timeLocal = new Date().getTime();
req.onreadystatechange = function () {
if (req.readyState == 4) {
if (req.status == 200) {
console.info('[KEYCLOAK] Token refreshed');
timeLocal = (timeLocal + new Date().getTime()) / 2;
var tokenResponse = JSON.parse(req.responseText);
setToken(tokenResponse['access_token'], tokenResponse['refresh_token'], tokenResponse['id_token'], timeLocal);
kc.onAuthRefreshSuccess && kc.onAuthRefreshSuccess();
for (var p = refreshQueue.pop(); p != null; p = refreshQueue.pop()) {
p.setSuccess(true);
}
} else {
console.warn('[KEYCLOAK] Failed to refresh token');
kc.onAuthRefreshError && kc.onAuthRefreshError();
for (var p = refreshQueue.pop(); p != null; p = refreshQueue.pop()) {
p.setError(true);
}
}
}
};
req.send(params);
}
}
}
if (loginIframe.enable) {
var iframePromise = checkLoginIframe();
iframePromise.success(function() {
exec();
}).error(function() {
promise.setError();
});
} else {
exec();
}
return promise.promise;
}
kc.clearToken = function() {
if (kc.token) {
setToken(null, null, null);
kc.onAuthLogout && kc.onAuthLogout();
if (kc.loginRequired) {
kc.login();
}
}
}
function getRealmUrl() {
if (kc.authServerUrl.charAt(kc.authServerUrl.length - 1) == '/') {
return kc.authServerUrl + 'realms/' + encodeURIComponent(kc.realm);
} else {
return kc.authServerUrl + '/realms/' + encodeURIComponent(kc.realm);
}
}
function getOrigin() {
if (!window.location.origin) {
return window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');
} else {
return window.location.origin;
}
}
function processCallback(oauth, promise) {
var code = oauth.code;
var error = oauth.error;
var prompt = oauth.prompt;
var timeLocal = new Date().getTime();
if (error) {
if (prompt != 'none') {
var errorData = { error: error, error_description: oauth.error_description };
kc.onAuthError && kc.onAuthError(errorData);
promise && promise.setError(errorData);
} else {
promise && promise.setSuccess();
}
return;
} else if ((kc.flow != 'standard') && (oauth.access_token || oauth.id_token)) {
authSuccess(oauth.access_token, null, oauth.id_token, true);
}
if ((kc.flow != 'implicit') && code) {
var params = 'code=' + code + '&grant_type=authorization_code';
var url = getRealmUrl() + '/protocol/openid-connect/token';
var req = new XMLHttpRequest();
req.open('POST', url, true);
req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
if (kc.clientId && kc.clientSecret) {
req.setRequestHeader('Authorization', 'Basic ' + btoa(kc.clientId + ':' + kc.clientSecret));
} else {
params += '&client_id=' + encodeURIComponent(kc.clientId);
}
params += '&redirect_uri=' + oauth.redirectUri;
req.withCredentials = true;
req.onreadystatechange = function() {
if (req.readyState == 4) {
if (req.status == 200) {
var tokenResponse = JSON.parse(req.responseText);
authSuccess(tokenResponse['access_token'], tokenResponse['refresh_token'], tokenResponse['id_token'], kc.flow === 'standard');
} else {
kc.onAuthError && kc.onAuthError();
promise && promise.setError();
}
}
};
req.send(params);
}
function authSuccess(accessToken, refreshToken, idToken, fulfillPromise) {
timeLocal = (timeLocal + new Date().getTime()) / 2;
setToken(accessToken, refreshToken, idToken, timeLocal);
if ((kc.tokenParsed && kc.tokenParsed.nonce != oauth.storedNonce) ||
(kc.refreshTokenParsed && kc.refreshTokenParsed.nonce != oauth.storedNonce) ||
(kc.idTokenParsed && kc.idTokenParsed.nonce != oauth.storedNonce)) {
console.info('[KEYCLOAK] Invalid nonce, clearing token');
kc.clearToken();
promise && promise.setError();
} else {
if (fulfillPromise) {
kc.onAuthSuccess && kc.onAuthSuccess();
promise && promise.setSuccess();
}
}
}
}
function loadConfig(url) {
var promise = createPromise();
var configUrl;
if (!config) {
configUrl = 'keycloak.json';
} else if (typeof config === 'string') {
configUrl = config;
}
if (configUrl) {
var req = new XMLHttpRequest();
req.open('GET', configUrl, true);
req.setRequestHeader('Accept', 'application/json');
req.onreadystatechange = function () {
if (req.readyState == 4) {
if (req.status == 200) {
var config = JSON.parse(req.responseText);
kc.authServerUrl = config['auth-server-url'];
kc.realm = config['realm'];
kc.clientId = config['resource'];
kc.clientSecret = (config['credentials'] || {})['secret'];
promise.setSuccess();
} else {
promise.setError();
}
}
};
req.send();
} else {
if (!config['url']) {
var scripts = document.getElementsByTagName('script');
for (var i = 0; i < scripts.length; i++) {
if (scripts[i].src.match(/.*keycloak\.js/)) {
config.url = scripts[i].src.substr(0, scripts[i].src.indexOf('/js/keycloak.js'));
break;
}
}
}
if (!config.realm) {
throw 'realm missing';
}
if (!config.clientId) {
throw 'clientId missing';
}
kc.authServerUrl = config.url;
kc.realm = config.realm;
kc.clientId = config.clientId;
kc.clientSecret = (config.credentials || {}).secret;
promise.setSuccess();
}
return promise.promise;
}
function setToken(token, refreshToken, idToken, timeLocal) {
if (kc.tokenTimeoutHandle) {
clearTimeout(kc.tokenTimeoutHandle);
kc.tokenTimeoutHandle = null;
}
if (token) {
kc.token = token;
kc.tokenParsed = decodeToken(token);
var sessionId = kc.realm + '/' + kc.tokenParsed.sub;
if (kc.tokenParsed.session_state) {
sessionId = sessionId + '/' + kc.tokenParsed.session_state;
}
kc.sessionId = sessionId;
kc.authenticated = true;
kc.subject = kc.tokenParsed.sub;
kc.realmAccess = kc.tokenParsed.realm_access;
kc.resourceAccess = kc.tokenParsed.resource_access;
if (timeLocal) {
kc.timeSkew = Math.floor(timeLocal / 1000) - kc.tokenParsed.iat;
console.info('[KEYCLOAK] Estimated time difference between browser and server is ' + kc.timeSkew + ' seconds');
} else {
kc.timeSkew = -1;
}
if (kc.onTokenExpired) {
if (kc.timeSkew == -1) {
kc.onTokenExpired();
} else {
var expiresIn = (kc.tokenParsed['exp'] - (new Date().getTime() / 1000) + kc.timeSkew) * 1000;
if (expiresIn <= 0) {
kc.onTokenExpired();
} else {
kc.tokenTimeoutHandle = setTimeout(kc.onTokenExpired, expiresIn);
}
}
}
} else {
delete kc.token;
delete kc.tokenParsed;
delete kc.subject;
delete kc.realmAccess;
delete kc.resourceAccess;
kc.authenticated = false;
}
if (refreshToken) {
kc.refreshToken = refreshToken;
kc.refreshTokenParsed = decodeToken(refreshToken);
} else {
delete kc.refreshToken;
delete kc.refreshTokenParsed;
}
if (idToken) {
kc.idToken = idToken;
kc.idTokenParsed = decodeToken(idToken);
} else {
delete kc.idToken;
delete kc.idTokenParsed;
}
}
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;
}
function createUUID() {
var s = [];
var hexDigits = '0123456789abcdef';
for (var i = 0; i < 36; i++) {
s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
}
s[14] = '4';
s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);
s[8] = s[13] = s[18] = s[23] = '-';
var uuid = s.join('');
return uuid;
}
kc.callback_id = 0;
function createCallbackId() {
var id = '<id: ' + (kc.callback_id++) + (Math.random()) + '>';
return id;
}
function parseCallback(url) {
var oauth = new CallbackParser(url, kc.responseMode).parseUri();
var oauthState = callbackStorage.get(oauth.state);
if (oauthState && (oauth.code || oauth.error || oauth.access_token || oauth.id_token)) {
oauth.redirectUri = oauthState.redirectUri;
oauth.storedNonce = oauthState.nonce;
oauth.prompt = oauthState.prompt;
if (oauth.fragment) {
oauth.newUrl += '#' + oauth.fragment;
}
return oauth;
}
}
function createPromise() {
var p = {
setSuccess: function(result) {
p.success = true;
p.result = result;
if (p.successCallback) {
p.successCallback(result);
}
},
setError: function(result) {
p.error = true;
p.result = result;
if (p.errorCallback) {
p.errorCallback(result);
}
},
promise: {
success: function(callback) {
if (p.success) {
callback(p.result);
} else if (!p.error) {
p.successCallback = callback;
}
return p.promise;
},
error: function(callback) {
if (p.error) {
callback(p.result);
} else if (!p.success) {
p.errorCallback = callback;
}
return p.promise;
}
}
}
return p;
}
function setupCheckLoginIframe() {
var promise = createPromise();
if (!loginIframe.enable) {
promise.setSuccess();
return promise.promise;
}
if (loginIframe.iframe) {
promise.setSuccess();
return promise.promise;
}
var iframe = document.createElement('iframe');
loginIframe.iframe = iframe;
iframe.onload = function() {
var realmUrl = getRealmUrl();
if (realmUrl.charAt(0) === '/') {
loginIframe.iframeOrigin = getOrigin();
} else {
loginIframe.iframeOrigin = realmUrl.substring(0, realmUrl.indexOf('/', 8));
}
promise.setSuccess();
setTimeout(check, loginIframe.interval * 1000);
}
var src = getRealmUrl() + '/protocol/openid-connect/login-status-iframe.html';
iframe.setAttribute('src', src );
iframe.style.display = 'none';
document.body.appendChild(iframe);
var messageCallback = function(event) {
if (event.origin !== loginIframe.iframeOrigin) {
return;
}
if (event.data != "unchanged") {
kc.clearToken();
}
for (var i = loginIframe.callbackList.length - 1; i >= 0; --i) {
var promise = loginIframe.callbackList[i];
if (event.data == "unchanged") {
promise.setSuccess();
} else {
promise.setError();
}
loginIframe.callbackList.splice(i, 1);
}
};
window.addEventListener('message', messageCallback, false);
var check = function() {
checkLoginIframe();
if (kc.token) {
setTimeout(check, loginIframe.interval * 1000);
}
};
return promise.promise;
}
function checkLoginIframe() {
var promise = createPromise();
if (loginIframe.iframe && loginIframe.iframeOrigin ) {
var msg = kc.clientId + ' ' + kc.sessionId;
loginIframe.callbackList.push(promise);
var origin = loginIframe.iframeOrigin;
if (loginIframe.callbackList.length == 1) {
loginIframe.iframe.contentWindow.postMessage(msg, origin);
}
} else {
promise.setSuccess();
}
return promise.promise;
}
function loadAdapter(type) {
if (!type || type == 'default') {
return {
login: function(options) {
window.location.href = kc.createLoginUrl(options);
return createPromise().promise;
},
logout: function(options) {
window.location.href = kc.createLogoutUrl(options);
return createPromise().promise;
},
register: function(options) {
window.location.href = kc.createRegisterUrl(options);
return createPromise().promise;
},
accountManagement : function() {
window.location.href = kc.createAccountUrl();
return createPromise().promise;
},
redirectUri: function(options, encodeHash) {
if (arguments.length == 1) {
encodeHash = true;
}
if (options && options.redirectUri) {
return options.redirectUri;
} else if (kc.redirectUri) {
return kc.redirectUri;
} else {
var redirectUri = location.href;
if (location.hash && encodeHash) {
redirectUri = redirectUri.substring(0, location.href.indexOf('#'));
redirectUri += (redirectUri.indexOf('?') == -1 ? '?' : '&') + 'redirect_fragment=' + encodeURIComponent(location.hash.substring(1));
}
return redirectUri;
}
}
};
}
if (type == 'cordova') {
loginIframe.enable = false;
return {
login: function(options) {
var promise = createPromise();
var o = 'location=no';
if (options && options.prompt == 'none') {
o += ',hidden=yes';
}
var loginUrl = kc.createLoginUrl(options);
var ref = window.open(loginUrl, '_blank', o);
var completed = false;
ref.addEventListener('loadstart', function(event) {
if (event.url.indexOf('http://localhost') == 0) {
var callback = parseCallback(event.url);
processCallback(callback, promise);
ref.close();
completed = true;
}
});
ref.addEventListener('loaderror', function(event) {
if (!completed) {
if (event.url.indexOf('http://localhost') == 0) {
var callback = parseCallback(event.url);
processCallback(callback, promise);
ref.close();
completed = true;
} else {
promise.setError();
ref.close();
}
}
});
return promise.promise;
},
logout: function(options) {
var promise = createPromise();
var logoutUrl = kc.createLogoutUrl(options);
var ref = window.open(logoutUrl, '_blank', 'location=no,hidden=yes');
var error;
ref.addEventListener('loadstart', function(event) {
if (event.url.indexOf('http://localhost') == 0) {
ref.close();
}
});
ref.addEventListener('loaderror', function(event) {
if (event.url.indexOf('http://localhost') == 0) {
ref.close();
} else {
error = true;
ref.close();
}
});
ref.addEventListener('exit', function(event) {
if (error) {