Auth0 Integration with GoogleHome

Help
,
1

I’m trying to integrate Auth0 with the sample (GitHub - actions-on-google/smart-home-nodejs: A sample of the Smart Home device control APIs in Actions on Google), but found no examples with TypeScript.

I know that concepts are missing for me, but the example is 100% working, it only needs to integrate the authentication.

The Original Code:

import * as express from 'express'
import * as util from 'util'
import { Headers } from 'actions-on-google'

import * as Firestore from './firestore'

/**
 * A function that gets the user id from an access token.
 * Replace this functionality with your own OAuth provider.
 *
 * @param headers HTTP request headers
 * @return The user id
 */
export async function getUser(headers: Headers): Promise<string> {
  const authorization = headers.authorization
  const accessToken = (authorization as string).substr(7)
  return await Firestore.getUserId(accessToken)
}

/**
 * A function that adds /login, /fakeauth, /faketoken endpoints to an
 * Express server. Replace this with your own OAuth endpoints.
 *
 * @param expressApp Express app
 */
export async function registerAuthEndpoints(expressApp: express.Express) {
  expressApp.use('/login', express.static('./frontend/login.html'))

  expressApp.post('/login', async (req, res) => {
    const {username, password} = req.body
    console.log('/login ', username, password)
    // Here, you should validate the user account.
    // In this sample, we do not do that.
    return res.redirect(util.format(
      '%s?client_id=%s&redirect_uri=%s&state=%s&response_type=code',
      '/frontend', req.body.client_id,
      encodeURIComponent(req.body.redirect_uri), req.body.state))
  })

  expressApp.get('/fakeauth', async (req, res) => {
    const responseurl = util.format('%s?code=%s&state=%s',
      decodeURIComponent(req.query.redirect_uri), 'xxxxxx',
      req.query.state)
    console.log(responseurl)
    return res.redirect(responseurl)
  })

  expressApp.all('/faketoken', async (req, res) => {
    const grantType = req.query.grant_type
      ? req.query.grant_type : req.body.grant_type
    const secondsInDay = 86400 // 60 * 60 * 24
    const HTTP_STATUS_OK = 200
    console.log(`Grant type ${grantType}`)

    let obj
    if (grantType === 'authorization_code') {
      obj = {
        token_type: 'bearer',
        access_token: '123access',
        refresh_token: '123refresh',
        expires_in: secondsInDay,
      }
    } else if (grantType === 'refresh_token') {
      obj = {
        token_type: 'bearer',
        access_token: '123access',
        expires_in: secondsInDay,
      }
    }
    res.status(HTTP_STATUS_OK).json(obj)
  })
}
1 Like
3

Hey there @marcelo.arnaldi!

Unfortunately don’t have much of experience with Google Home but I was able to find this article from one of Google Developer Advocates on how to tie Google Home with Auth0:

You may find it helpful!

1 Like
4

Hello, thank you for the answer, I saw this tutorial and my difficulty was to use the Auth0 library in TypeScript, but after a lot of fighting I finally got it!

It really was my lack of knowledge.

5

No worries! Glad you have it working now! If you can share the code snippets you used, with the community it would be perfect!

6

Oi Konrad,
This is part of the code:

import { AuthenticationClient } from 'auth0'

const auth0 = new AuthenticationClient({
   domain: '<my-domin-auth0>.auth0.com',
   clientId: '<clientId>',
   clientSecret: '<clientSecret>'
});

export async function getUser(headers: Headers): Promise<string> {       
   const authorization = headers.authorization
   const accessToken = (authorization as string).substr(7)
   const {email} = await auth0.getProfile(accessToken)
   console.log(email)
   return await Firestore.getUserId(accessToken)
}

Is there another more correct way to advertise?

7

Thanks a a lot for sharing it with us!

So when you build something complete using Auth0 stack it’s worth showcasing it within “Show your Auth0” category.

8

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