server.js

/*
 * OS.js - JavaScript Cloud/Web Desktop Platform
 *
 * Copyright (c) 2011-2020, Anders Evenrud <andersevenrud@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @author  Anders Evenrud <andersevenrud@gmail.com>
 * @licence Simplified BSD License
 */

const jwt = require('express-jwt');
const jwksRsa = require('jwks-rsa');
const jwtAuthz = require('express-jwt-authz');

module.exports = (core, opts) => {
  const coreConfig = Object.assign({
    audience: 'https://YOUR_AUDIENCE/',
    issuer: 'https://YOUR_AUTH0_DOMAIN/',
    jwksUri: 'https://YOUR_AUTH0_DOMAIN/.well-known/jwks.json',
  }, core.config('auth0', {}));

  const options = Object.assign({
    jwt: {},
    secret: {},
    scopes: []
  }, coreConfig, opts);

  const secret = Object.assign({
    cache: true,
    rateLimit: true,
    jwksRequestsPerMinute: 5,
    jwksUri: options.jwksUri,
  }, options.secret);

  const jwtOptions = {
    secret: jwksRsa.expressJwtSecret(secret),
    audience: options.audience,
    issuer: options.issuer,
    algorithms: ['RS256']
  };

  const checkJwt = jwt(jwtOptions);

  return {
    init: () => {
      const express = core.make('osjs/express');

      console.log('Inited Auth0 with', jwtOptions);

      express.middleware(true, checkJwt);

      if (options.scopes.length > 0) {
        express.middleware(true, jwtAuthz(options.scopes));
      }
    },

    logout: () => Promise.resolve(true),
    login: (req) => Promise.resolve(req.body)
  };
};