angular-auth-oidc-client
Version:
An OpenID Connect Code Flow with PKCE,Implicit Flow client for Angular
165 lines • 12.9 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Injectable } from '@angular/core';
import { LoggerService } from './oidc.logger.service';
export class TokenHelperService {
/**
* @param {?} loggerService
*/
constructor(loggerService) {
this.loggerService = loggerService;
this.PARTS_OF_TOKEN = 3;
}
/**
* @param {?} dataIdToken
* @return {?}
*/
getTokenExpirationDate(dataIdToken) {
if (!dataIdToken.hasOwnProperty('exp')) {
return new Date();
}
/** @type {?} */
const date = new Date(0);
date.setUTCSeconds(dataIdToken.exp);
return date;
}
/**
* @param {?} token
* @param {?} encoded
* @return {?}
*/
getHeaderFromToken(token, encoded) {
if (!this.tokenIsValid(token)) {
return {};
}
return this.getPartOfToken(token, 0, encoded);
}
/**
* @param {?} token
* @param {?} encoded
* @return {?}
*/
getPayloadFromToken(token, encoded) {
if (!this.tokenIsValid(token)) {
return {};
}
return this.getPartOfToken(token, 1, encoded);
}
/**
* @param {?} token
* @param {?} encoded
* @return {?}
*/
getSignatureFromToken(token, encoded) {
if (!this.tokenIsValid(token)) {
return {};
}
return this.getPartOfToken(token, 2, encoded);
}
/**
* @private
* @param {?} token
* @param {?} index
* @param {?} encoded
* @return {?}
*/
getPartOfToken(token, index, encoded) {
/** @type {?} */
const partOfToken = this.extractPartOfToken(token, index);
if (encoded) {
return partOfToken;
}
/** @type {?} */
const result = this.urlBase64Decode(partOfToken);
return JSON.parse(result);
}
/**
* @private
* @param {?} str
* @return {?}
*/
urlBase64Decode(str) {
/** @type {?} */
let output = str.replace(/-/g, '+').replace(/_/g, '/');
switch (output.length % 4) {
case 0:
break;
case 2:
output += '==';
break;
case 3:
output += '=';
break;
default:
throw Error('Illegal base64url string!');
}
/** @type {?} */
const decoded = typeof window !== 'undefined' ? window.atob(output) : new Buffer(output, 'base64').toString('binary');
try {
// Going backwards: from bytestream, to percent-encoding, to original string.
return decodeURIComponent(decoded.split('')
.map((/**
* @param {?} c
* @return {?}
*/
(c) => '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)))
.join(''));
}
catch (err) {
return decoded;
}
}
/**
* @private
* @param {?} token
* @return {?}
*/
tokenIsValid(token) {
if (!token) {
this.loggerService.logError(`token '${token}' is not valid --> token falsy`);
return false;
}
if (!((/** @type {?} */ (token))).includes('.')) {
this.loggerService.logError(`token '${token}' is not valid --> no dots included`);
return false;
}
/** @type {?} */
const parts = token.split('.');
if (parts.length !== this.PARTS_OF_TOKEN) {
this.loggerService.logError(`token '${token}' is not valid --> token has t have exact three dots`);
return false;
}
return true;
}
/**
* @private
* @param {?} token
* @param {?} index
* @return {?}
*/
extractPartOfToken(token, index) {
return token.split('.')[index];
}
}
TokenHelperService.decorators = [
{ type: Injectable }
];
/** @nocollapse */
TokenHelperService.ctorParameters = () => [
{ type: LoggerService }
];
if (false) {
/**
* @type {?}
* @private
*/
TokenHelperService.prototype.PARTS_OF_TOKEN;
/**
* @type {?}
* @private
*/
TokenHelperService.prototype.loggerService;
}
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// The 0 here is the key, which sets the date to the epoch\n        date.setUTCSeconds(dataIdToken.exp);\n\n        return date;\n    }\n\n    getHeaderFromToken(token: any, encoded: boolean) {\n        if (!this.tokenIsValid(token)) {\n            return {};\n        }\n\n        return this.getPartOfToken(token, 0, encoded);\n    }\n\n    getPayloadFromToken(token: any, encoded: boolean) {\n        if (!this.tokenIsValid(token)) {\n            return {};\n        }\n\n        return this.getPartOfToken(token, 1, encoded);\n    }\n\n    getSignatureFromToken(token: any, encoded: boolean) {\n        if (!this.tokenIsValid(token)) {\n            return {};\n        }\n\n        return this.getPartOfToken(token, 2, encoded);\n    }\n\n    private getPartOfToken(token: string, index: number, encoded: boolean) {\n        const partOfToken = this.extractPartOfToken(token, index);\n\n        if (encoded) {\n            return partOfToken;\n        }\n\n        const result = this.urlBase64Decode(partOfToken);\n        return JSON.parse(result);\n    }\n\n    private urlBase64Decode(str: string) {\n        let output = str.replace(/-/g, '+').replace(/_/g, '/');\n        switch (output.length % 4) {\n            case 0:\n                break;\n            case 2:\n                output += '==';\n                break;\n            case 3:\n                output += '=';\n                break;\n            default:\n                throw Error('Illegal base64url string!');\n        }\n\n        const decoded = typeof window !== 'undefined' ? window.atob(output) : new Buffer(output, 'base64').toString('binary');\n\n        try {\n            // Going backwards: from bytestream, to percent-encoding, to original string.\n            return decodeURIComponent(decoded.split('')\n                .map((c: string) => '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2))\n                .join(''));\n        } catch (err) {\n            return decoded;\n        }\n    }\n\n    private tokenIsValid(token: string) {\n        if (!token) {\n            this.loggerService.logError(`token '${token}' is not valid --> token falsy`);\n            return false;\n        }\n\n        if (!(token as string).includes('.')) {\n            this.loggerService.logError(`token '${token}' is not valid --> no dots included`);\n            return false;\n        }\n\n        const parts = token.split('.');\n\n        if (parts.length !== this.PARTS_OF_TOKEN) {\n            this.loggerService.logError(`token '${token}' is not valid --> token has t have exact three dots`);\n            return false;\n        }\n\n        return true;\n    }\n\n    private extractPartOfToken(token: string, index: number) {\n        return token.split('.')[index];\n    }\n}\n"]}