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105 lines
2.9 KiB
JavaScript
105 lines
2.9 KiB
JavaScript
function TokenService() {
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initTokenService();
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};
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function initTokenService() {
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var _token;
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TokenService.prototype.setToken = function (token, callback) {
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if (!callback || typeof callback !== 'function') {
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throw 'callback function required';
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}
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_token = token;
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chrome.storage.local.set({
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'authBearer': token
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}, function () {
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callback();
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});
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};
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TokenService.prototype.getToken = function (callback) {
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if (!callback || typeof callback !== 'function') {
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throw 'callback function required';
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}
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if (_token) {
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return callback(_token);
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}
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chrome.storage.local.get('authBearer', function (obj) {
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if (obj && obj.authBearer) {
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_token = obj.authBearer;
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}
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return callback(_token);
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});
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};
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TokenService.prototype.clearToken = function (callback) {
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if (!callback || typeof callback !== 'function') {
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throw 'callback function required';
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}
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_token = null;
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chrome.storage.local.remove('authBearer', function () {
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callback();
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});
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};
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// jwthelper methods
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// ref https://github.com/auth0/angular-jwt/blob/master/src/angularJwt/services/jwt.js
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TokenService.prototype.decodeToken = function (token) {
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var parts = token.split('.');
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if (parts.length !== 3) {
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throw new Error('JWT must have 3 parts');
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}
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var decoded = urlBase64Decode(parts[1]);
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if (!decoded) {
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throw new Error('Cannot decode the token');
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}
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return JSON.parse(decoded);
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};
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TokenService.prototype.getTokenExpirationDate = function (token) {
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var decoded = this.decodeToken(token);
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if (typeof decoded.exp === "undefined") {
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return null;
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}
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var d = new Date(0); // The 0 here is the key, which sets the date to the epoch
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d.setUTCSeconds(decoded.exp);
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return d;
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};
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TokenService.prototype.isTokenExpired = function (token, offsetSeconds) {
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var d = this.getTokenExpirationDate(token);
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offsetSeconds = offsetSeconds || 0;
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if (d === null) {
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return false;
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}
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// Token expired?
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return !(d.valueOf() > (new Date().valueOf() + (offsetSeconds * 1000)));
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};
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function urlBase64Decode(str) {
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var output = str.replace(/-/g, '+').replace(/_/g, '/');
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switch (output.length % 4) {
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case 0: { break; }
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case 2: { output += '=='; break; }
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case 3: { output += '='; break; }
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default: {
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throw 'Illegal base64url string!';
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}
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}
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return window.decodeURIComponent(escape(window.atob(output))); //polyfill https://github.com/davidchambers/Base64.js
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};
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};
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