JWT - Restful API

REST APIs JWT Authentication

This feature allows you to send request to WordPress website using Firebase Id Token.

Video Guide: https://www.youtube.com/watch?v=Kq9JZq1SiYU

Remote Authentication (via URL)

Imagine that you have a Firebase App that users can log in to. However, before they can use your app, users need to purchase a package that will give them permission. And this product will help to auto-login users from your Firebase App to your WooCommerce / WordPress website. This add-on doesn’t care if users exist in WP or not, it just log users in with Firbase credentials. That’s it.

If you want to give it a try, please visit: https://dn-wp-autologin.web.app/

Any questions or discussions, please create a ticket at https://github.com/dalenguyen/firebase-wordpress-plugin/discussions

Prerequisite

  • Integrate Firebase PRO users
  • Firestore service is enabled
  • Node 12 for deploying cloud functions

Getting Started

Make sure that you have Firestore Database ready. Then apply this security rules for your collection.

match /jwtTokens/{token} {
    allow read, write: if false;
}

Then install the add-on as usual. The plugin should appear under Firebase tab.

Deploy cloud functions

The cloud functions is inside the plugin, so you need to extract the zip file in order to deploy it.

Make sure that you are running Node v12. If you don’t have Node on your machine, please visit Node Version Manager.

cd functions

// install the package - you can run yarn or npm (pick one only)
yarn OR npm install

// deploy functions
npm run deploy --project your-project-id

Create Auto-login page (WordPress)

Create a WordPress page with the follow shortcode.

// you can specify the redirect page after the auto-login process
// default is home page

[firebase_autologin redirect="redirect-link"]

Create Redirect Page (Firebase App)

This example uses JavaScript. However you can implement it by using the same principal on iOS or Android or Webapp. The key is call the callable functions for logged in users.

<button id="auto-login" onclick="wpAutoLogin()">
...

<script>

// This is the WP page that you created with the shortcode
// ?jwt= is mandatory
const wpLink = 'https://example.com?jwt='

const generateToken = () => {
    // Get the token from firebase
    const token = firebase.functions().httpsCallable('api-token')
    token().then((result) => {
        if (result.data.status) {
            const url = wpLink + result.data.data.token

            // Open auto-login link for WP
            // You can also send the URL to user if you want to
            // The time limit for the link is 1 HOUR
            window.open(url, '_blank')
        } else {
            console.error(result.data.message)
        }
    })
}

// Start auto login process
const wpAutoLogin = function () {
    firebase.auth().onAuthStateChanged((user) => {
        if (user) {
            generateToken()
        } else {
            console.log(`User is not logged in...`)
        }
    })
}
</script>

Troubleshooting

IAM Service Account Credentials API

IAM Service Account Credentials API has not been used in project … before or it is disabled. Enable it by visiting…

If you encounter this error, just click on the link and enable IAM service.

../_images/enable-IAM-service.png

Enable IAM service

The caller does not have permission

The caller does not have permission; Please refer to https://firebase.google.com/docs/auth/admin/create-custom-tokens for more details on how to use and troubleshoot this feature.

For this error, you need to you Google Cloud Console and add Service Account Token Creator role to your firebase service account.

../_images/add-service-account-token-creator.png

Enable IAM service