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'use strict';
(function () {
let eventPrefix = 'oidcauth:';
let unauthorizedEvent = eventPrefix + 'unauthorized';
let tokenExpiredEvent = eventPrefix + 'tokenExpired';
let tokenMissingEvent = eventPrefix + 'tokenMissing';
let tokenExpiresSoonEvent = eventPrefix + 'tokenExpires';
let loggedInEvent = eventPrefix + 'loggedIn';
let loggedOutEvent = eventPrefix + 'loggedOut';
let silentRefreshStartedEvent = eventPrefix + 'silentRefreshStarted';
let silentInitRefreshStartedEvent = eventPrefix + 'silentInitRefreshStarted';
let silentRefreshSuceededEvent = eventPrefix + 'silentRefreshSucceded';
let silentRefreshFailedEvent = eventPrefix + 'silentRefreshFailed';
let logger = {
name: '[oidcauth]',
make_log: function(handler, arg) {
handler(...[logger.name, ...arg])
},
info: function(...args){
logger.make_log(console.info, args)
},
debug: function(...args){
logger.make_log(console.debug, args)
},
error: function(...args){
logger.make_log(console.error, args)
},
warn: function(...args){
logger.make_log(console.warn, args)
},
log: function(...args){
logger.make_log(console.info, args)
}
};
// Module registrarion
let oidcmodule = angular.module('oidc-angular', ['base64', 'ngStorage', 'ui.router']);
oidcmodule.config(['$httpProvider', '$stateProvider', function ($httpProvider, $stateProvider) {
$httpProvider.interceptors.push('oidcHttpInterceptor');
// Register callback route
$stateProvider.state('auth-callback', {
url: '/auth/callback/?code&state',
template: '',
controller: ['$auth', '$stateParams', function ($auth, $stateParams) {
logger.info('handling login-callback');
$auth.handleSignInCallback($stateParams);
}]
}).state('auth-clear', {
url: '/auth/clear',
template: '',
controller: ['$auth', function ($auth) {
logger.info('handling logout-callback');
$auth.handleSignOutCallback();
}]
});
logger.info('callback routes registered.')
}]);
oidcmodule.factory('oidcHttpInterceptor', ['$rootScope', '$q', '$injector', 'tokenService', function ($rootScope, $q, $injector, tokenService) {
return {
'request': function (request) {
const $auth = $injector.get('$auth');
if ($auth.config.apiUrl.test(request.url)) {
let appendBearer = false;
if ($auth.config.enableRequestChecks) {
// Only append token when it's valid.
if (tokenService.hasToken()) {
if (tokenService.hasValidToken()) {
appendBearer = true;
}
else {
$rootScope.$broadcast(tokenExpiredEvent, {request: request});
logger.error(tokenExpiredEvent, {request: request});
}
}
else {
$rootScope.$broadcast(tokenMissingEvent, {request: request});
logger.error(tokenMissingEvent, {request: request});
}
}
else {
appendBearer = tokenService.hasToken();
}
if (appendBearer) {
let token = tokenService.getIdToken();
request.headers['Authorization'] = 'Bearer ' + token;
}
}
// do something on success
return request;
},
'response': function (response) {
return response;
},
'responseError': function (response) {
const $auth = $injector.get('$auth');
if ($auth.config.apiUrl.test(response.config.url)) {
if (response.status == 401) {
if (!tokenService.hasToken()) {
// There was probably no token attached, because there is none
$rootScope.$broadcast(tokenMissingEvent, {response: response});
logger.error(tokenMissingEvent, {response: response});
}
else if (!tokenService.hasValidToken()) {
// Seems the token is not valid anymore
$rootScope.$broadcast(tokenExpiredEvent, {response: response});
logger.error(tokenExpiredEvent, {response: response});
}
else {
// any other
$rootScope.$broadcast(unauthorizedEvent, {response: response});
logger.error(unauthorizedEvent, {response: response});
}
}
}
return $q.reject(response);
}
};
}]);
oidcmodule.service('tokenService', ['$base64', '$localStorage', function ($base64, $localStorage) {
const service = this;
const STORAGE_KEYS = {
idToken: 'oidc:token:idToken',
refreshToken: 'oidc:token:refreshToken',
claims: 'oidc:token:claims'
};
const padBase64 = function (base64data) {
while (base64data.length % 4 !== 0) {
base64data += "=";
}
return base64data;
};
service.getPayloadFromRawToken = function (raw) {
let tokenParts = raw.split(".");
if (tokenParts.length != 3) {
logger.error('Raw token does NOT have valid format.', raw)
}
return tokenParts[1];
};
service.deserializeClaims = function (raw) {
try {
let claimsBase64 = padBase64(raw);
let claimsJson = $base64.decode(claimsBase64);
return JSON.parse(claimsJson);
} catch (e) {
logger.error(e);
return {}
}
};
service.convertToClaims = function (id_token) {
let payload = service.getPayloadFromRawToken(id_token);
return service.deserializeClaims(payload);
};
service.getIdToken = function () {
return $localStorage[STORAGE_KEYS.idToken];
};
service.getRefreshToken = function () {
return $localStorage[STORAGE_KEYS.refreshToken];
};
service.saveIdToken = function (id_token) {
$localStorage[STORAGE_KEYS.idToken] = id_token;
};
service.saveRefreshToken = function (refresh_token) {
$localStorage[STORAGE_KEYS.refreshToken] = refresh_token;
};
service.saveTokens = function (id_token, refresh_token) {
service.clearTokens();
service.saveIdToken(id_token);
service.saveRefreshToken(refresh_token);
};
service.hasToken = function () {
let claims = service.allClaims();
return claims && claims.hasOwnProperty("iat") && claims.hasOwnProperty('exp');
};
service.hasValidToken = function () {
if (!this.hasToken()) return false;
let claims = service.allClaims();
if (!claims.hasOwnProperty('iat') || !claims.hasOwnProperty('exp')) {
logger.error('Token claims does NOT have valid fields.', claims);
return false
}
let now = Date.now();
//noinspection JSUnresolvedVariable
let issuedAtMSec = claims.iat * 1000;
let expiresAtMSec = claims.exp * 1000;
let marginMSec = 1000 * 60 * 5; // 5 Minutes
// Substract margin, because browser time could be a bit in the past
if (issuedAtMSec - marginMSec > now) {
logger.log('Token is not yet valid!');
return false
}
if (expiresAtMSec < now) {
logger.log('Token has expired!');
return false;
}
return true;
};
service.allClaims = function () {
let cachedClaims = $localStorage[STORAGE_KEYS.claims];
if (!cachedClaims) {
let id_token = service.getIdToken();
if (id_token) {
cachedClaims = service.convertToClaims(id_token);
$localStorage[STORAGE_KEYS.claims] = cachedClaims;
}
}
return cachedClaims;
};
service.clearTokens = function () {
delete $localStorage[STORAGE_KEYS.claims];
delete $localStorage[STORAGE_KEYS.idToken];
delete $localStorage[STORAGE_KEYS.refreshToken];
}
}]);
//noinspection JSUnusedLocalSymbols
oidcmodule.provider("$auth", [function() {
const STORAGE_KEYS = {
logoutActive: 'oidc:auth:logoutActive',
refreshRunning: 'oidc:auth:refreshRunning',
validateExpiryLoopRunning: 'oidc:auth:validateExpiryLoopRunning',
localRedirect: 'oidc:auth:localRedirect',
state: 'oidc:auth:state',
nonce: 'oidc:auth:nonce',
code_challenge: 'oidc:auth:code_challenge'
};
const getRandomString = (len) => {
const arr = new Uint8Array(Math.floor((len || 40) / 2));
//noinspection JSUnresolvedFunction
window.crypto.getRandomValues(arr);
const result = Array.from(arr).map(dec2hex).join('');
logger.debug('[getRandomString]', result);
return result;
};
// Default configuration
let config = {
basePath: '',
clientId: '',
apiUrl: '/api/',
responseType: 'code',
scope: "openid",
redirectUri: (window.location.origin || window.location.protocol + '//' + window.location.host) + window.location.pathname + '#/auth/callback/',
logoutUri: (window.location.origin || window.location.protocol + '//' + window.location.host) + window.location.pathname + '#/auth/clear',
authorizationEndpoint: 'connect/authorize',
endSessionEndpoint: 'connect/endsession',
tokenEndpoint: 'connect/token',
advanceRefresh: 300,
enableRequestChecks: false,
stickToLastKnownIdp: false
};
return {
// Service configuration
configure: function (params) {
angular.extend(config, params);
if (typeof config.apiUrl == 'string') {
config.apiUrl = new RegExp(config.apiUrl);
}
},
// Service itself
$get: ['$http', '$timeout', '$rootScope', '$localStorage', '$location', 'tokenService', '$httpParamSerializer', '$q', function (
$http, $timeout, $rootScope, $localStorage, $location, tokenService, $httpParamSerializer, $q ) {
const setLogoutActiveFlag = () => $localStorage[STORAGE_KEYS.logoutActive] = true;
const clearLogoutActiveFlag = () => delete $localStorage[STORAGE_KEYS.logoutActive];
const isLogoutActiveFlag = () => $localStorage[STORAGE_KEYS.logoutActive];
const setRefreshRunningFlag = () => $localStorage[STORAGE_KEYS.refreshRunning] = true;
const clearRefreshRunningFlag = () => delete $localStorage[STORAGE_KEYS.refreshRunning];
const isRefreshRunningFlag = () => $localStorage[STORAGE_KEYS.refreshRunning];
const setExpiryLoopRunningFlag = () => $localStorage[STORAGE_KEYS.validateExpiryLoopRunning] = true;
const clearExpiryLoopRunningFlag = () => delete $localStorage[STORAGE_KEYS.validateExpiryLoopRunning];
const isExpiryLoopRunningFlag = () => $localStorage[STORAGE_KEYS.validateExpiryLoopRunning];
const getState = function(){
if (!$localStorage[STORAGE_KEYS.state]) {
$localStorage[STORAGE_KEYS.state] = getRandomString(17);
}
return $localStorage[STORAGE_KEYS.state];
};
const clearState = () => delete $localStorage[STORAGE_KEYS.state];
const getNonce = function(){
if (!$localStorage[STORAGE_KEYS.nonce]) {
$localStorage[STORAGE_KEYS.nonce] = getRandomString(17);
}
return $localStorage[STORAGE_KEYS.nonce];
};
const clearNonce = () => delete $localStorage[STORAGE_KEYS.nonce];
const getCodeChallenge = function() {
if (!$localStorage[STORAGE_KEYS.code_challenge]){
$localStorage[STORAGE_KEYS.code_challenge] = getRandomString(17);
}
return $localStorage[STORAGE_KEYS.code_challenge]
};
const getHashedCodeChallenge = () => {
// const hashBytes = sha256.convertToSHA256(getCodeChallenge());
// logger.log('[hashBytes]', hashBytes, hashBytes.match(/.{2}/g));
// alert('d');
//
// return arrayBufferToBase64(hashBytes.match(/.{2}/g)).replace('=', '');
return getCodeChallenge();
};
const getCodeChallengeMethod = () => 'plain'; //'S256';
const clearCodeChallenge = () => delete $localStorage[STORAGE_KEYS.code_challenge];
const setLocalRedirect = (url) => $localStorage[STORAGE_KEYS.localRedirect] = url;
const getLocalRedirect = () => $localStorage[STORAGE_KEYS.localRedirect];
const clearLocalRedirect = () => delete $localStorage[STORAGE_KEYS.localRedirect];
const init = function () {
if (isLogoutActiveFlag()) {
clearLogoutActiveFlag();
tokenService.clearTokens();
}
if (isRefreshRunningFlag()) {
clearRefreshRunningFlag();
}
if (isExpiryLoopRunningFlag()) {
clearExpiryLoopRunningFlag();
}
if (tokenService.hasToken()) {
if (tokenService.hasValidToken()) {
validateExpiryLoop();
} else {
$rootScope.$broadcast(silentInitRefreshStartedEvent);
logger.log(silentInitRefreshStartedEvent);
trySilentRefresh();
}
}
};
const validateExpiryLoop = function () {
if (isExpiryLoopRunningFlag()) {
return;
}
setExpiryLoopRunningFlag();
logger.info('Starting validateExpiryLoop');
let myLoop = function () {
if (!isExpiryLoopRunningFlag()) {
logger.info('Stopping validateExpiryLoop()');
return;
}
validateExpirity();
$timeout(myLoop, config.advanceRefresh * 1000);
};
myLoop();
};
const createLoginUrl = function () {
let targetUrl = '';
if (!config.authorizationEndpoint.startsWith('http://') && !config.authorizationEndpoint.startsWith('https://')) {
targetUrl += config.basePath;
targetUrl += targetUrl.endsWith('/')?'':'/';
}
targetUrl += config.authorizationEndpoint;
let currentClaims = tokenService.allClaims();
let idpClaimValue = currentClaims?currentClaims["idp"]:'';
let url = targetUrl
+ "?response_type="
+ encodeURIComponent(config.responseType)
+ "&client_id="
+ encodeURIComponent(config.clientId)
+ "&state="
+ encodeURIComponent(getState())
+ "&nonce="
+ encodeURIComponent(getNonce())
+ "&code_challenge="
+ encodeURIComponent(getHashedCodeChallenge())
+ "&code_challenge_method="
+ encodeURIComponent(getCodeChallengeMethod())
+ "&redirect_uri="
+ encodeURIComponent(config.redirectUri)
+ "&scope="
+ encodeURIComponent(config.scope);
if (config.stickToLastKnownIdp && idpClaimValue) {
url = url + "&acr_values="
+ encodeURIComponent("idp:" + idpClaimValue);
}
return url;
};
const createTokenEndpointUrl = function() {
let targetUrl = '';
if (!config.tokenEndpoint.startsWith('http://') && !config.tokenEndpoint.startsWith('https://')) {
targetUrl += config.basePath;
targetUrl += targetUrl.endsWith('/') ? '' : '/';
}
targetUrl += config.tokenEndpoint;
return targetUrl;
};
const createCodeExchangePayload = function(code){
let code_challenge = getCodeChallenge();
clearCodeChallenge();
return {
grant_type: 'authorization_code',
client_id: config.clientId,
redirect_uri: config.redirectUri,
code: code,
code_verifier: code_challenge
};
};
const createTokenRefreshPayload = function(refresh_token){
return {
grant_type: 'refresh_token',
client_id: config.clientId,
refresh_token: refresh_token
};
};
/**
* Return dictionary used for Password Authentication Flow
*
* @param {String} username
* @param {String} password
* @returns {Object} dictionary used for Password Authentication Flow
*/
const createPasswordExchangePayload = function(username, password){
return {
grant_type: 'password',
client_id: config.clientId,
username: username,
password: password
};
};
const createLogoutUrl = function () {
clearState();
let targetUrl = '';
if (!config.endSessionEndpoint.startsWith('http://') && !config.endSessionEndpoint.startsWith('https://')) {
targetUrl += config.basePath;
targetUrl += targetUrl.endsWith('/')?'':'/';
}
targetUrl += config.endSessionEndpoint;
let idToken = tokenService.getIdToken();
return targetUrl
+ "?id_token_hint="
+ encodeURIComponent(idToken)
+ "&post_logout_redirect_uri="
+ encodeURIComponent(config.logoutUri)
+ "&state="
+ encodeURIComponent(getState())
+ "&r=" + Math.random();
};
const startCodeFlow = function (localRedirect) {
clearCodeChallenge();
clearNonce();
clearState();
setLocalRedirect(localRedirect);
let url = createLoginUrl();
$timeout(()=>window.location.replace(url));
};
const startLogout = function () {
let url = createLogoutUrl();
setLogoutActiveFlag();
clearExpiryLoopRunningFlag();
$timeout(() => window.location.replace(url));
};
/**
* Process success response from Token EndPoint
*
* @param {Oidc.TokenEndpoint.Response} token_endpoint_response See: {@link Oidc.TokenEndpoint.Response}
*/
const handleTokenEndpointResponse = function (token_endpoint_response) {
const id_token = token_endpoint_response.id_token;
const refresh_token = token_endpoint_response.refresh_token;
tokenService.saveTokens(id_token, refresh_token);
let redirectTo, localRedirect = getLocalRedirect();
if (localRedirect) {
redirectTo = localRedirect.hash.substring(1);
clearLocalRedirect();
}
else {
redirectTo = '/';
}
if (tokenService.hasValidToken()) {
validateExpiryLoop();
}
$rootScope.$broadcast(loggedInEvent);
logger.log(loggedInEvent);
$timeout(()=>$location.path(redirectTo));
return true;
};
const handleSilentRefreshCallback = function (idToken, refreshToken) {
let currentClaims = tokenService.allClaims();
let event;
let newClaims = tokenService.convertToClaims(idToken);
let logHandler = logger.log;
if (!currentClaims || (currentClaims.exp && newClaims.exp && newClaims.exp > currentClaims.exp)) {
tokenService.saveTokens(idToken, refreshToken);
event = silentRefreshSuceededEvent;
}
else {
event = silentRefreshFailedEvent;
logHandler = logger.error;
}
if (tokenService.hasValidToken()) {
validateExpiryLoop();
}
clearRefreshRunningFlag();
$rootScope.$broadcast(event);
logHandler(event);
};
const trySilentRefresh = function () {
if (isRefreshRunningFlag()) {
logger.info('Refreshing is running. Aborting...');
return;
}
logger.log('Refreshing token...');
setRefreshRunningFlag();
$rootScope.$broadcast(silentRefreshStartedEvent);
logger.log(silentRefreshStartedEvent);
let refresh_token = tokenService.getRefreshToken();
$http.post(
createTokenEndpointUrl(),
$httpParamSerializer(createTokenRefreshPayload(refresh_token)),
{
headers: {
'Content-Type': 'application/x-www-form-urlencoded' // Note the appropriate header
}
}
).then((response)=> {
let wrong_response = false;
if (!response.data.hasOwnProperty('id_token')) {
wrong_response = 'Code exchange response does NOT have "id_token"';
}
if (!response.data.hasOwnProperty('refresh_token')) {
wrong_response = 'Code exchange response does NOT have "refresh_token"';
}
if (wrong_response) {
logger.error(wrong_response, response.data);
$rootScope.$broadcast(silentRefreshFailedEvent);
clearRefreshRunningFlag();
return
}
handleSilentRefreshCallback(response.data.id_token, response.data.refresh_token)
}, (response)=> {
logger.error('Unable to perform silent Refresh', response.statusText, response.data);
$rootScope.$broadcast(silentRefreshFailedEvent);
clearRefreshRunningFlag();
});
};
/**
* Token Endpoint response object
* @typedef {Object} Oidc.TokenEndpoint.Response
* @property {String} access_token OAuth2's Access Token
* @property {String} refresh_token OAuth2's Refresh Token
* @property {String} token_type Authentication Token's Type - default 'bearer'
* @property {String} expires_in OAuth2'a Access Token expiration time in seconds
* @property {String} id_token OpenID Connect JWT Token
*/
/**
* Validates response from Token Endpoint
*
* @param {Object} response XHR object
* @param {Oidc.TokenEndpoint.Response} response.data See: {@link Oidc.TokenEndpoint.Response}
*/
const validateTokenEndPoint = function(response){
let wrong_response = false;
if (!response.data.hasOwnProperty('id_token')) {
wrong_response = 'Code exchange response does NOT have "id_token"';
}
if (!response.data.hasOwnProperty('refresh_token')) {
wrong_response = 'Code exchange response does NOT have "refresh_token"';
}
if (wrong_response) {
logger.error(wrong_response, response.data);
throw new Error(wrong_response);
}
}
const exchangeCodeForTokens = function(code) {
logger.info('Exchanging "code" for refresh token');
$http.post(
createTokenEndpointUrl(),
$httpParamSerializer(createCodeExchangePayload(code)),
{
headers: {
'Content-Type': 'application/x-www-form-urlencoded' // Note the appropriate header
}
}
).then((response)=>{
validateTokenEndPoint(response);
handleTokenEndpointResponse(response.data);
}, (response) => {
let msg = 'Unable to exchange code for token!';
logger.error(msg, response.statusText, response);
throw new Error(msg);
})
};
const handleSignInCallback = function (data) {
logger.debug("Processing callback information", data);
if (!data.code && !data.state){
// workaround for bug https://github.com/angular/angular.js/issues/6172
const absUrl = $location.absUrl();
const start = absUrl.indexOf('?')+1;
const end = absUrl.indexOf('#');
const queryParams = absUrl.substr(start, end-start);
data = parseQueryString(queryParams);
}
const code = data.code;
const state = data.state;
if (getState() != state) {
let msg = 'Wrong STATE. CSRF detected.';
logger.error(msg, getState(), state);
throw new Error(msg);
}
exchangeCodeForTokens(code);
};
const handleSignOutCallback = function () {
clearLogoutActiveFlag();
clearExpiryLoopRunningFlag();
tokenService.clearTokens();
$rootScope.$broadcast(loggedOutEvent);
logger.log(loggedOutEvent);
$timeout(()=>{$location.path('/')});
};
const tokenIsValidAt = function (date) {
let claims = tokenService.allClaims();
if (!claims || !(claims.hasOwnProperty('exp'))) {
return false;
}
let expiresAtMSec = claims.exp * 1000;
return date <= expiresAtMSec;
};
const validateExpirity = function () {
let now = Date.now();
if (!tokenService.hasValidToken() || !tokenIsValidAt(now + config.advanceRefresh * 1000)) {
$rootScope.$broadcast(tokenExpiresSoonEvent);
logger.warn(tokenExpiresSoonEvent);
trySilentRefresh();
}
};
/**
* Function used to invoke OAuth2 Password based authentication flow. OIDC client must be set as public.
*
* @param {string} username
* @param {string} password
* @returns {Promise} Promise object as a result of authentication
*/
const doLogin = function (username, password) {
return $q((resolve, reject)=>{
$http.post(
createTokenEndpointUrl(),
$httpParamSerializer(createPasswordExchangePayload(username, password)),
{
headers: {
'Content-Type': 'application/x-www-form-urlencoded' // Note the appropriate header
}
}
).then((response)=>{
validateTokenEndPoint(response);
handleTokenEndpointResponse(response.data);
return resolve();
}, (response)=>{
const msg = 'Unable to authenticate user.'
logger.error(msg, response.statusText, response);
return reject(response.data);
});
})
}
init();
//noinspection JSUnusedGlobalSymbols
return {
config: config,
handleSignInCallback: handleSignInCallback,
handleSignOutCallback: handleSignOutCallback,
validateExpirity: validateExpirity,
isAuthenticated: function () {
return tokenService.hasValidToken();
},
isAuthenticatedIn: function (milliseconds) {
return tokenService.hasValidToken() && tokenIsValidAt(new Date().getTime() + milliseconds);
},
signIn: function (localRedirect) {
startCodeFlow(localRedirect);
},
signInWithCredentials: doLogin,
signOut: function () {
startLogout();
},
silentRefresh: function () {
trySilentRefresh();
}
};
}]
};
}]);
/* Helpers & Polyfills */
function arrayBufferToBase64(ab){
let dView = new Uint8Array(ab); //Get a byte view
let arr = Array.prototype.slice.call(dView); //Create a normal array
let arr1 = arr.map(function(item){
return String.fromCharCode(item); //Convert
});
return window.btoa(arr1.join('')); //Form a string
}
if (!String.prototype.endsWith) {
String.prototype.endsWith = function (searchString, position) {
let subjectString = this.toString();
if (position === undefined || position > subjectString.length) {
position = subjectString.length;
}
position -= searchString.length;
let lastIndex = subjectString.indexOf(searchString, position);
return lastIndex !== -1 && lastIndex === position;
};
}
if (!String.prototype.startsWith) {
String.prototype.startsWith = function (searchString, position) {
position = position || 0;
return this.lastIndexOf(searchString, position) === position;
};
}
function dec2hex (dec) {
return ('0' + dec.toString(16)).substr(-2)
}
function arrayBufferToBase64(ab){
let dView = new Uint8Array(ab); //Get a byte view
let arr = Array.prototype.slice.call(dView); //Create a normal array
let arr1 = arr.map(function(item){
return String.fromCharCode(item); //Convert
});
return window.btoa(arr1.join('')); //Form a string
}
function parseQueryString(queryString) {
let data = {}, pairs, pair, separatorIndex, escapedKey, escapedValue, key, value;
if (queryString === null) {
return data;
}
pairs = queryString.split("&");
for (let i = 0; i < pairs.length; i++) {
pair = pairs[i];
separatorIndex = pair.indexOf("=");
if (separatorIndex === -1) {
escapedKey = pair;
escapedValue = null;
} else {
escapedKey = pair.substr(0, separatorIndex);
escapedValue = pair.substr(separatorIndex + 1);
}
key = decodeURIComponent(escapedKey);
value = decodeURIComponent(escapedValue);
if (key.substr(0, 1) === '/')
key = key.substr(1);
data[key] = value;
}
return data;
}
})();
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