How to use Laravel Passport with Password Grant Tokens?

Question

I just read the https://laravel.com/docs/5.6/passport documentation and I have some doubts that hopefully someone could help me with:

First, some context, I want to

Answer 1

If you are consuming your own api then you don't need to call http://example.com/oauth/token for user login because then you need to store client_id and client_secret at app side. Better you create an api for login and there you can check the credentials and generate the personal token.

public function login(Request $request)
{
        $credentials = $request->only('email', 'password');

        if (Auth::attempt($credentials)) {
            // Authentication passed...
             $user = Auth::user();
             $token = $user->createToken('Token Name')->accessToken;

            return response()->json($token);
        }
}

Finally, there are a lot of endpoints that I get from passport that I don't think I will use for example: oauth/clients*, oauth/personal-access-tokens* is there a way to remove them from the endpoints published by passport?

You need to remove Passport::routes(); from AuthServiceProvider and manually put only required passport routes. I think you only need oauth/token route.

what exactly is "The-App" value for?

if you check oauth_access_tokens table it has name field. $user->createToken('Token Name')->accessToken; here the "Token Name" stored in name field.

How to use Laravel Passport with Password Grant Tokens?

To generate password grant token you have to store client_id and client_secret at app side (not recommended, check this ) and suppose if you have to reset the client_secret then the old version app stop working, these are the problems. To generate password grant token you have to call this api like you mention in step 3.

$http = new GuzzleHttp\Client;

$response = $http->post('http://your-app.com/oauth/token', [
    'form_params' => [
        'grant_type' => 'password',
        'client_id' => 'client-id',
        'client_secret' => 'client-secret',
        'username' => 'taylor@laravel.com',
        'password' => 'my-password',
        'scope' => '',
    ],
]);

return json_decode((string) $response->getBody(), true);

Generate token from refresh_token

$http = new GuzzleHttp\Client;

$response = $http->post('http://your-app.com/oauth/token', [
    'form_params' => [
        'grant_type' => 'refresh_token',
        'refresh_token' => 'the-refresh-token',
        'client_id' => 'client-id',
        'client_secret' => 'client-secret',
        'scope' => '',
    ],
]);

return json_decode((string) $response->getBody(), true);

You can look this https://laravel.com/docs/5.6/passport#implicit-grant-tokens too.

Answer 2

Tackling Question 5

Finally, there are a lot of endpoints that I get from passport that I don't think I will use for example: oauth/clients*, oauth/personal-access-tokens* is there a way to remove them from the endpoints published by passport?

---

Passport::routes($callback = null, array $options = []) takes an optional $callback function and optional $options argument.

The callback function takes a $router argument from which you can then choose which routes to install as shown below in your AuthServiceProvider.php that is enabling a more granular configuration:

Passport::routes(function ($router) {
    $router->forAccessTokens();
    $router->forPersonalAccessTokens();
    $router->forTransientTokens();
});

Passport::tokensExpireIn(Carbon::now()->addMinutes(10));

Passport::refreshTokensExpireIn(Carbon::now()->addDays(10));

This way we only create the passport routes that we need.

forAccessTokens(); enable us to create access tokens.
forPersonalAccessTokens(); enable us to create personal tokens although we will not use this in this article. Lastly, forTransientTokens(); creates the route for refreshing tokens.

If you run php artisan route:list you can see the new endpoints installed by Laravel Passport.

| POST | oauth/token         | \Laravel\Passport\Http\Controllers\AccessTokenController@issueToken
| POST | oauth/token/refresh | \Laravel\Passport\Http\Controllers\TransientTokenController@refresh