Oauth2Server plugin for CakePHP

This plugin is intended to be an easy way to build an Oauth2 Server using thephpleague/oauth2-server

!!Attention!! This plugin does not support refresh token repository yet. Access tokens are usable without any expiration date. use at your own risk!

PRs are more than welcome

How to use?

You can install this plugin into your CakePHP application using composer.

1. Use composer to install

composer require suhaboncukcu/oauth2server

! Create openSSL and encryption keys. I usually use a composer snippet to handle these tasks as below:

...
   "create-keys": [
        "openssl genrsa -out private.key 2048",
        "openssl rsa -in private.key -pubout -out public.key"
    ],
    "create-encryption-key": [
        "./vendor/bin/generate-defuse-key"
    ],
...

2. Load the plugin

Plugin::load('Oauth2Server', ['bootstrap' => true, 'routes' => false]);

3. Create your validators

!!Attention!!

You can find example validator classes under vendors\suhaboncukcu\Oauth2Server\src\OauthLogic\Validators. You should copy and paste them to your desired location.

4. Create & Update the config file

Copy & paste vendors\suhaboncukcu\Oauth2Server\config\oauth2.php to your config folder and update it. After creating your keys, you should set their permissions to 600 or 660

5. Implement end points. ``

// in one of your controllers

    // Auth endpoint 
    public function authorize()
    {
        $this->autoRender = false;


        $this->loadComponent('Oauth2Server.Oauth2');

        $response = $this->Oauth2->authorize($this->request, $this->response);
        $response = $response->withHeader('Content-Type', 'application/json');

        return $response;
    }
    
    // callback endpoint
    public function code()
    {
        $this->autoRender = false;
        $response = $this->response
            ->withHeader('Content-Type', 'application/json')
            ->withStringBody(json_encode([
                'code' => urldecode($this->request->getQuery('code'))
            ]));

        return $response;
    }
    
    // access token endpoint
    public function accessToken()
    {
        $this->autoRender = false;

        $this->loadComponent('Oauth2Server.Oauth2');


        $response = $this->Oauth2->accessToken($this->request, $this->response);
        $response = $response->withHeader('Content-Type', 'application/json');

        return $response;
    }
    
    

6. Use middleware to secure your routes.

// assuming you have a plugin named Api 

//\Api\config\routes
use Cake\Routing\RouteBuilder;
use Cake\Routing\Router;
use Cake\Routing\Route\DashedRoute;

use League\OAuth2\Server\Middleware\ResourceServerMiddleware;
use Oauth2Server\OauthLogic\ServerUtility;

$serverUtility = new ServerUtility();
$server = $serverUtility->getPublicServer();


Router::plugin(
    'Api',
    ['path' => '/api'],
    function (RouteBuilder $routes) use ($server) {

        $routes->registerMiddleware('resourceServer', new ResourceServerMiddleware($server));
        $routes->middlewareGroup('Oauth2Stack', ['resourceServer']);

        $routes->applyMiddleware('Oauth2Stack');


        $routes->scope('/v1', function ($routes) {
            $routes->fallbacks(DashedRoute::class);
        });

    }
);

7. Use attributes to get total control in your actions if Validators are not enough

$this->request->getAttributes()