Spring Boot Security how to check/verify access token

Question

I am spring newbie

I've implemented OAuth2 implicit flow using spring security. The question is how to check token validity? I've found oauth/check_token endpoint but first I wasn't able to reach it. Then I've made the following change:

@Override
public void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception
{
    oauthServer.checkTokenAccess("permitAll()");
}

After the configuration I can use check_token endpoint but I wonder if it is correct to use permitAll on the endpoint. I've tried to change it to isAuthenticated but in that case I am not able to reach the endpoint because I don't store client_secret on my frontend app.

Should I continue use permitAll or there is better way?

Answer 1

You should check access while using oAuth.

Try below code if works,

 @Override
    public void configure(
      AuthorizationServerSecurityConfigurer oauthServer) 
      throws Exception {
        oauthServer
          .tokenKeyAccess("permitAll()")
          .checkTokenAccess("isAuthenticated()");
    }

If doesn't, please share your security related snippets. Happy coding :)