src/auth.js

   1 'use strict';
   2
   3 var passport = require('passport'),
   4     path = require('path'),
   5     safe = require('safetydance'),
   6     bcrypt = require('bcryptjs'),
   7     uuid = require('uuid/v4'),
   8     BearerStrategy = require('passport-http-bearer').Strategy,
   9     LdapStrategy = require('passport-ldapjs').Strategy,
  10     HttpSuccess = require('connect-lastmile').HttpSuccess;
  11
  12 var LOCAL_AUTH_FILE = path.resolve(process.env.LOCAL_AUTH_FILE || './.users.json');
  13
  14 var gTokenStore = {};
  15
  16 function issueAccessToken() {
  17     return function (req, res, next) {
  18         var accessToken = uuid();
  19
  20         gTokenStore[accessToken] = req.user;
  21
  22         next(new HttpSuccess(201, { accessToken: accessToken, user: req.user }));
  23     };
  24 }
  25
  26 passport.serializeUser(function (user, done) {
  27     console.log('serializeUser', user);
  28     done(null, user.uid);
  29 });
  30
  31 passport.deserializeUser(function (id, done) {
  32     console.log('deserializeUser', id);
  33     done(null, { uid: id });
  34 });
  35
  36 var LDAP_URL = process.env.LDAP_URL;
  37 var LDAP_USERS_BASE_DN = process.env.LDAP_USERS_BASE_DN;
  38
  39 if (LDAP_URL && LDAP_USERS_BASE_DN) {
  40     console.log('Enable ldap auth');
  41
  42     exports.login = [ passport.authenticate('ldap'), issueAccessToken() ];
  43 } else {
  44     console.log('Use local user file:', LOCAL_AUTH_FILE);
  45
  46     exports.login = [
  47         function (req, res, next) {
  48             var users = safe.JSON.parse(safe.fs.readFileSync(LOCAL_AUTH_FILE));
  49             if (!users) return res.send(401);
  50             if (!users[req.query.username]) return res.send(401);
  51
  52             bcrypt.compare(req.query.password, users[req.query.username].passwordHash, function (error, valid) {
  53                 if (error || !valid) return res.send(401);
  54
  55                 req.user = {
  56                     username: req.query.username
  57                 };
  58
  59                 next();
  60             });
  61         },
  62         issueAccessToken()
  63     ];
  64 }
  65
  66 var opts = {
  67     server: {
  68         url: LDAP_URL,
  69     },
  70     base: LDAP_USERS_BASE_DN,
  71     search: {
  72         filter: '(|(username={{username}})(mail={{username}}))',
  73         attributes: ['displayname', 'username', 'mail', 'uid'],
  74         scope: 'sub'
  75     },
  76     uidTag: 'cn',
  77     usernameField: 'username',
  78     passwordField: 'password',
  79 };
  80
  81 passport.use(new LdapStrategy(opts, function (profile, done) {
  82     done(null, profile);
  83 }));
  84
  85 exports.verify = passport.authenticate('bearer', { session: false });
  86
  87 passport.use(new BearerStrategy(function (token, done) {
  88     if (!gTokenStore[token]) return done(null, false);
  89
  90     return done(null, gTokenStore[token], { accessToken: token });
  91 }));
  92
  93 exports.logout = function (req, res, next) {
  94     console.log(req.authInfo);
  95
  96     delete gTokenStore[req.authInfo.accessToken];
  97
  98     next(new HttpSuccess(200, {}));
  99 };
 100
 101 exports.getProfile = function (req, res, next) {
 102     next(new HttpSuccess(200, { username: req.user.username }));
 103 };