server/middlewares/oauth.ts

   1 import * as express from 'express'
   2 import * as OAuthServer from 'express-oauth-server'
   3 import 'express-validator'
   4 import { OAUTH_LIFETIME } from '../initializers'
   5 import { logger } from '../helpers/logger'
   6 import { Socket } from 'socket.io'
   7 import { getAccessToken } from '../lib/oauth-model'
   8
   9 const oAuthServer = new OAuthServer({
  10   useErrorHandler: true,
  11   accessTokenLifetime: OAUTH_LIFETIME.ACCESS_TOKEN,
  12   refreshTokenLifetime: OAUTH_LIFETIME.REFRESH_TOKEN,
  13   model: require('../lib/oauth-model')
  14 })
  15
  16 function authenticate (req: express.Request, res: express.Response, next: express.NextFunction) {
  17   oAuthServer.authenticate()(req, res, err => {
  18     if (err) {
  19       logger.warn('Cannot authenticate.', { err })
  20
  21       return res.status(err.status)
  22         .json({
  23           error: 'Token is invalid.',
  24           code: err.name
  25         })
  26         .end()
  27     }
  28
  29     return next()
  30   })
  31 }
  32
  33 function authenticateSocket (socket: Socket, next: (err?: any) => void) {
  34   const accessToken = socket.handshake.query.accessToken
  35
  36   logger.debug('Checking socket access token %s.', accessToken)
  37
  38   getAccessToken(accessToken)
  39     .then(tokenDB => {
  40       const now = new Date()
  41
  42       if (!tokenDB || tokenDB.accessTokenExpiresAt < now || tokenDB.refreshTokenExpiresAt < now) {
  43         return next(new Error('Invalid access token.'))
  44       }
  45
  46       socket.handshake.query.user = tokenDB.User
  47
  48       return next()
  49     })
  50 }
  51
  52 function authenticatePromiseIfNeeded (req: express.Request, res: express.Response) {
  53   return new Promise(resolve => {
  54     // Already authenticated? (or tried to)
  55     if (res.locals.oauth && res.locals.oauth.token.User) return resolve()
  56
  57     if (res.locals.authenticated === false) return res.sendStatus(401)
  58
  59     authenticate(req, res, () => {
  60       return resolve()
  61     })
  62   })
  63 }
  64
  65 function optionalAuthenticate (req: express.Request, res: express.Response, next: express.NextFunction) {
  66   if (req.header('authorization')) return authenticate(req, res, next)
  67
  68   res.locals.authenticated = false
  69
  70   return next()
  71 }
  72
  73 function token (req: express.Request, res: express.Response, next: express.NextFunction) {
  74   return oAuthServer.token()(req, res, err => {
  75     if (err) {
  76       return res.status(err.status)
  77         .json({
  78           error: err.message,
  79           code: err.name
  80         })
  81         .end()
  82     }
  83
  84     return next()
  85   })
  86 }
  87
  88 // ---------------------------------------------------------------------------
  89
  90 export {
  91   authenticate,
  92   authenticateSocket,
  93   authenticatePromiseIfNeeded,
  94   optionalAuthenticate,
  95   token
  96 }