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OAuth2 Server for CakePHP 3

Software License Build Status

A plugin for implementing an OAuth2 server in CakePHP 3. Built on top of the PHP League's OAuth2 Server. Currently we support the following grant types: AuthCode, RefreshToken, ClientCredentials.

This repository is a fork of uafrica/oauth-server.

Requirements

  • PHP >= 7.1 with openssl extension
  • CakePHP >= 3.5
  • Database (MySQL, SQLite tested)

Installation

You can install this plugin into your CakePHP application using. Run:

composer require elstc/cakephp-oauth-server

Load plugin

(CakePHP >= 3.6.0) Load the plugin by adding the following statement in your project's src/Application.php:

$this->addPlugin('OAuthServer');

(CakePHP <= 3.5.x) Load the plugin by adding the following statement in your project's config/bootstrap.php file:

Plugin::load('OAuthServer', ['bootstrap' => true, 'route' => true]);

Run database migration

The database migrations need to be run.

bin/cake migrations migrate -p OAuthServer

Generating and setup keys

Generating private and public keys (see also https://oauth2.thephpleague.com/installation/):

openssl genrsa -out config/oauth.pem 2048
openssl rsa -in config/oauth.pem -pubout -out config/oauth.pub

Generating encryption key :

vendor/bin/generate-defuse-key
(COPY result hash)

Change your app.php, Add OAuthServer configuration :

    'OAuthServer' => [
        'privateKey' => CONFIG . 'oauth.pem',
        'publicKey' => CONFIG . 'oauth.pub',
        'encryptionKey' => 'def0000060c80a6856e8...', // <- SET encryption key FROM `vendor/bin/generate-defuse-key`
    ],

NOTICE: private key and encryption key is confidential. Try to set as much as possible with environment variables and not upload to the source code repository.

for Apache HTTP Server + php-fpm or php-cgi

Authorization header is not transparent in Apache HTTP Server with php-fpm. So some settings are needed.

Adding the following statement to webroot/.htaccess:

# Apache HTTP Server 2.4.13 and later and use mod_proxy / mod_proxy_fcgi
CGIPassAuth on

# Apache HTTP Server 2.4.12 and older
SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1

And apply \OAuthServer\Middleware\AuthorizationEnvironmentMiddleware on your application:

class Application extends BaseApplication
{
    public function middleware($middleware)
    {
        $middleware
            ->add(ErrorHandlerMiddleware::class)

            ->add(AssetMiddleware::class)

            // ADD THIS: bypass Authorization environment to request header
            ->add(\OAuthServer\Middleware\AuthorizationEnvironmentMiddleware::class)

            ->add(RoutingMiddleware::class);

        return $middleware;
    }
}

It is recommended to insert between AssetMiddleware and RoutingMiddleware.

Configuration

It is assumed that you already have working Form based authentication using the built in CakePHP 3 authentication component. If you do not, please read the authentication chapter.

Set OAuthServer as an authentication adaptor.

In your AppController::beforeFilter() method, add (or modify)

$this->Auth->config('authenticate', [
    'Form',
    'OAuthServer.OAuth'
]);

Change your login method to look as follows:

public function login()
{
    if ($this->request->is('post')) {
        $user = $this->Auth->identify();
        if ($user) {
            $this->Auth->setUser($user);

            $redirectUri = $this->Auth->redirectUrl();
            if ($this->request->getQuery('redir') === 'oauth') {
                $redirectUri = [
                    'plugin' => 'OAuthServer',
                    'controller' => 'OAuth',
                    'action' => 'authorize',
                    '?' => $this->request->getQueryParams(),
                ];
            }

            return $this->redirect($redirectUri);
        } else {
            $this->Flash->error(
                __('Username or password is incorrect'),
                'default',
                [],
                'auth'
            );
        }
    }
}

Alternatively, if you are using the Friends Of Cake CRUD plugin, add

'login' => [
    'className' => 'OAuthServer.Login'
]

to your CRUD actions config.

Usage

The base OAuth2 path is example.com/oauth.

In order to add clients and OAuth scopes you need to create a ClientsController and a ScopesController (Which is not part of this plugin)

The simplest way is to make use of the Friends Of Cake CRUD-View plugin.

Install it by running

$ composer require friendsofcake/bootstrap-ui:dev-master
$ composer require friendsofcake/crud:dev-master
$ composer require friendsofcake/crud-view:dev-master

Then create a ClientsController that looks like:

<?php
namespace App\Controller;

use Crud\Controller\ControllerTrait;

/**
 * OauthClients Controller
 *
 * @property \OAuthServer\Model\Table\OauthClientsTable $Clients
 */
class ClientsController extends AppController
{

    use ControllerTrait;

    public $modelClass = 'OAuthServer.Clients';

    /**
     * @return void
     */
    public function initialize()
    {
        parent::initialize();
        $this->viewClass = 'CrudView\View\CrudView';
        $tables = [
            'Clients',
            'Scopes'
        ];
        $this->loadComponent('Crud.Crud', [
            'actions' => [
                'index' => [
                    'className' => 'Crud.Index',
                    'scaffold' => [
                        'tables' => $tables
                    ]
                ],
                'view' => [
                    'className' => 'Crud.View',
                    'scaffold' => [
                        'tables' => $tables
                    ]
                ],
                'edit' => [
                    'className' => 'Crud.Edit',
                    'scaffold' => [
                        'tables' => $tables,
                        'fields' => [
                            'name',
                            'redirect_uri',
                            'parent_model',
                            'parent_id' => [
                                'label' => 'Parent ID',
                                'type' => 'text'
                            ]
                        ]
                    ]
                ],
                'add' => [
                    'className' => 'Crud.Add',
                    'scaffold' => [
                        'tables' => $tables,
                        'fields' => [
                            'name',
                            'redirect_uri',
                            'parent_model',
                            'parent_id' => [
                                'label' => 'Parent ID',
                                'type' => 'text'
                            ]
                        ]
                    ]
                ],
                'delete' => [
                    'className' => 'Crud.Delete',
                    'scaffold' => [
                        'tables' => $tables
                    ]
                ],
            ],
            'listeners' => [
                'CrudView.View',
                'Crud.RelatedModels',
                'Crud.Redirect',
                'Crud.Api'
            ],
        ]);
    }
}

And a ScopesController that looks like:

<?php
namespace App\Controller;

use Crud\Controller\ControllerTrait;

/**
 * Scopes Controller
 *
 * @property \OAuthServer\Model\Table\OauthScopesTable $Scopes
 */
class ScopesController extends AppController
{

    use ControllerTrait;

    public $modelClass = 'OAuthServer.Scopes';

    /**
     * @return void
     */
    public function initialize()
    {
        parent::initialize();
        $this->viewClass = 'CrudView\View\CrudView';
        $tables = [
            'Clients',
            'Scopes'
        ];
        $this->loadComponent('Crud.Crud', [
            'actions' => [
                'index' => [
                    'className' => 'Crud.Index',
                    'scaffold' => [
                        'tables' => $tables
                    ]
                ],
                'view' => [
                    'className' => 'Crud.View',
                    'scaffold' => [
                        'tables' => $tables
                    ]
                ],
                'edit' => [
                    'className' => 'Crud.Edit',
                    'scaffold' => [
                        'tables' => $tables,
                        'fields' => [
                            'id' => [
                                'label' => 'ID',
                                'type' => 'text'
                            ],
                            'description',
                        ]
                    ]
                ],
                'add' => [
                    'className' => 'Crud.Add',
                    'scaffold' => [
                        'tables' => $tables,
                        'fields' => [
                            'id' => [
                                'label' => 'ID',
                                'type' => 'text'
                            ],
                            'description',
                        ]
                    ]
                ],
                'delete' => [
                    'className' => 'Crud.Delete',
                    'scaffold' => [
                        'tables' => $tables
                    ]
                ],
            ],
            'listeners' => [
                'CrudView.View',
                'Crud.RelatedModels',
                'Crud.Redirect',
            ],
        ]);
    }
}

Customisation

The OAuth2 Server can be customised, the look for the various pages can be changed by creating templates in Template/Plugin/OAuthServer/OAuth

The server also fires a number of events that can be used to inject values into the process. The current events fired are:

  • OAuthServer.beforeAuthorize - On rendering of the approval page for the user.
  • OAuthServer.afterAuthorize - On the user authorising the client
  • OAuthServer.afterDeny - On the user denying the client

You can customise the OAuth authorise page by creating a overriding template file in src/Template/Plugin/OAuthServer/OAuth/authorize.ctp

Component/Authenticator Options

  • OAuthServer.privateKey

REQUIRED: Set your private key filepath.

The key file should be don't readable other user. (file permission is 400, 440, 600, 640, 660)

  • OAuthServer.publicKey

REQUIRED: Set your public key filepath. That generated from the above private key.

The key file should be don't readable other user. (file permission is 400, 440, 600, 640, 660)

  • OAuthServer.encryptionKey

REQUIRED: Set your encryption key string. That generated from vendor/bin/generate-defuse-key command.

  • OAuthServer.accessTokenTTL

Optional: Set access token TTL. Specify a format that can be interpreted by the DateInterval class.

default: PT1H (1 hour)

  • OAuthServer.refreshTokenTTL

Optional: Set refresh token TTL. Specify a format that can be interpreted by the DateInterval class.

default: P1M (1 month)

  • OAuthServer.authCodeTTL

Optional: Set auth code TTL. Specify a format that can be interpreted by the DateInterval class.

default: PT10M (10 minutes)

  • OAuthServer.supportedGrants

Optional: Set supported grant types. This option can be the following list: AuthCode, RefreshToken, ClientCredentials, Password.

default: ['AuthCode', 'RefreshToken', 'ClientCredentials', 'Password']

  • OAuthServer.passwordAuthenticator

Optional: Set Authenticator that use password grant. Set this if your application uses a non default authenticator.

default: Form

OAuthAuthenticate Options

  • continue

Optional: If set to true, if OAuth authentication fails, not stop processing there. Use this when you want to use only authentication information without requiring login.

default: false

  • fields.username

Optional: Specify the user's primary key field.

default: id

more configuration options see: https://book.cakephp.org/3.0/en/controllers/components/authentication.html#configuring-authentication-handlers

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