Auth0 "The JWT string must contain two dots"

Question

I'm currently using Vue3 and have integrated Auth0-spa-js from https://github.com/auth0/auth0-spa-js. This works great.

I'm sending requests to a PHP API backend through Axios, passing in the access token as a GET parameter called token.

Server side I get an exception "The JWT string must contain two dots" after setting up steps from https://github.com/auth0/auth0-PHP. I've installed the requirements, guzzle and dotenv, etc. Currently on PHP 7.4.2.

// useAuth0.js
// to login and maintain Auth state

import createAuth0Client from "@auth0/auth0-spa-js";
import { reactive } from "vue";

export const AuthState = reactive({
  user: null,
  loading: false,
  isAuthenticated: null,
  auth0: null,
});

const config = {
  domain: import.meta.env.VITE_AUTH0_DOMAIN,
  client_id: import.meta.env.VITE_AUTH0_CLIENT_ID,
};

export const useAuth0 = (state) => {
  const handleStateChange = async () => {
    state.isAuthenticated = !!(await state.auth0.isAuthenticated());
    state.user = await state.auth0.getUser();
    state.loading = false;
  };

  const initAuth = () => {
    state.loading = true;
    createAuth0Client({
      domain: config.domain,
      client_id: config.client_id,
      cacheLocation: "localstorage",
      redirect_uri: window.location.origin,
    }).then(async (auth) => {
      state.auth0 = auth;
      await handleStateChange();
    });
  };

  const login = async () => {
    await state.auth0.loginWithPopup();
    await handleStateChange();
  };

  const logout = async () => {
    state.auth0.logout({
      returnTo: window.location.origin,
    });
  };

  return {
    login,
    logout,
    initAuth,
  };
};

// and I use this on a button click event

AuthState.auth0.getTokenSilently().then(accessToken => {
   // AXIOS REQUEST
})

// PHP
// Auth0 SDK is 8.1.0

use Auth0\SDK\Auth0;
use Auth0\SDK\Utility\HttpResponse;
use Auth0\SDK\Token;

$env = (Dotenv\Dotenv::createImmutable(FCPATH))->load();
// I've checked that $env does contain correct .env values

$token = filter_var($_GET['token'] ?? null, FILTER_UNSAFE_RAW, FILTER_NULL_ON_FAILURE);
// Actual token I logged
eyJhbGciOiJkaXIiLCJlbmMiOiJBMjU2R0NNIiwiaXNzIjoiaHR0cHM6Ly9kZXYtd2kxeGRtbDcudXMuYXV0aDAuY29tLyJ9..V50FRJnBnpBnHJjA.e3PZuESoGaPCjp0kO9vlijGMIfhXWQHlbvsslWtbAvFAQ5hef9_PXLD_W282Cba9D6k-FAwhro9i3e5ukzXouGWYfoYHHQ5WQJ-vpLISrRANxFvNVPsCZSkg1sAIbL0Qk3Gir82ds1G919uEPc6vB3Y2qbARAd9nlMJBpLqWUq9VcIrzHtsJN7Q8j36vTCRXyu0f5-TeOr-dU3-gaIUvur37YQD0xICr4sENFktPU3s-uqCSCopVi6MoZMGvfYcVlO3nv1Sb2owGX_S_PSG7fug4Et-pMw1cVYgfNtLQf8XViI-l19sgXAf2eQShmLPvcdBdXVPA0g.S9vyktmK7rPoM_F3nUSEvg

$auth0 = new Auth0([
   'domain' => $env['AUTH0_DOMAIN'],
   'clientId' => $env['AUTH0_CLIENT_ID'],
   'clientSecret' => $env['AUTH0_CLIENT_SECRET'],
   'tokenAlgorithm' => 'RS256'
]);

// Exception thrown here with decode
$token = $auth0->decode($token, null, null, null, null, null, null, Token::TYPE_ID_TOKEN);

$token->verify();

$token->validate();

Is there and issue with auth0-spa-js when creating the token thats not compatible with Auth0 PHP SDK, or a configuration setting is not being passed that I need to add? I've pretty much configured things as those two docs specify, double checking expected variables.

Answer 1

Turns out I needed to add the audience parameter to the createAuth0Client, getTokenSilently(), and the PHP SDK decode method for my Auth0 Custom API. Everything validated.

I must of missed something in the docs, or it seems that the audience parameter is more of a required than optional value.