Updated changelog

This reverts commit 9a93dca05c.

.scrutinizer.yml

@@ -2,7 +2,6 @@ filter:
     excluded_paths:
         - tests/*
         - vendor/*
-        - examples/*
 checks:
     php:
         code_rating: true

CHANGELOG.md

@@ -1,6 +1,24 @@
 # Changelog
 
-## 5.0.0 (release 2016-04-17)
+## 5.0.3 (released 2016-05-04)
+
+* Fix hints in PasswordGrant (Issue #560)
+* Add meaning of `Resource owner` to terminology.md (Issue #561)
+* Use constant for event name instead of explicit string (Issue #563)
+* Remove unused request property (Issue #564)
+* Correct wrong phpdoc (Issue #569)
+* Fixed typo in exception string (Issue #570)
+
+## 5.0.2 (released 2016-04-18)
+
+* `state` parameter is now correctly returned after implicit grant authorization
+* Small code and docblock improvements
+
+## 5.0.1 (released 2016-04-18)
+
+* Fixes an issue (#550) whereby it was unclear whether or not to validate a client's secret during a request.
+
+## 5.0.0 (released 2016-04-17)
 
 Version 5 is a complete code rewrite.
 

README.md

@@ -43,11 +43,6 @@ You can contribute to the documentation in the [gh-pages branch](https://github.
 
 Please see [CONTRIBUTING.md](https://github.com/thephpleague/oauth2-server/blob/master/CONTRIBUTING.md) and [CONDUCT.md](https://github.com/thephpleague/oauth2-server/blob/master/CONDUCT.md) for details.
 
-## Integration
-
-- [CakePHP 3](https://github.com/uafrica/oauth-server)
-- [Laravel](https://github.com/lucadegasperi/oauth2-server-laravel)
-
 ## Support
 
 Bugs and feature request are tracked on [GitHub](https://github.com/thephpleague/oauth2-server/issues).
@@ -56,7 +51,7 @@ If you have any questions about OAuth _please_ open a ticket here; please **don'
 
 ## Security
 
-If you discover any security related issues, please email hello@alexbilbie.com instead of using the issue tracker.
+If you discover any security related issues, please email `hello@alexbilbie.com` instead of using the issue tracker.
 
 ## License
 

examples/public/api.php

@@ -1,11 +1,4 @@
 <?php
-/**
- * @author      Alex Bilbie <hello@alexbilbie.com>
- * @copyright   Copyright (c) Alex Bilbie
- * @license     http://mit-license.org/
- *
- * @link        https://github.com/thephpleague/oauth2-server
- */
 
 use League\OAuth2\Server\ResourceServer;
 use OAuth2ServerExamples\Repositories\AccessTokenRepository;
@@ -16,63 +9,65 @@ use Slim\App;
 include __DIR__ . '/../vendor/autoload.php';
 
 $app = new App([
-    'settings'    => [
-        'displayErrorDetails' => true,
-    ],
+    // Add the resource server to the DI container
     ResourceServer::class => function () {
-        // Setup the authorization server
         $server = new ResourceServer(
-            new AccessTokenRepository(),
-            'file://' . __DIR__ . '/../public.key'
+            new AccessTokenRepository(),            // instance of AccessTokenRepositoryInterface
+            'file://' . __DIR__ . '/../public.key'  // the authorization server's public key
         );
 
         return $server;
     },
 ]);
 
+// Add the resource server middleware which will intercept and validate requests
 $app->add(
     new \League\OAuth2\Server\Middleware\ResourceServerMiddleware(
         $app->getContainer()->get(ResourceServer::class)
     )
 );
 
-$app->get('/users', function (ServerRequestInterface $request, ResponseInterface $response) use ($app) {
+// An example endpoint secured with OAuth 2.0
+$app->get(
+    '/users',
+    function (ServerRequestInterface $request, ResponseInterface $response) use ($app) {
 
-    $users = [
-        [
-            'id'    => 123,
-            'name'  => 'Alex',
-            'email' => 'alex@thephpleague.com',
-        ],
-        [
-            'id'    => 124,
-            'name'  => 'Frank',
-            'email' => 'frank@thephpleague.com',
-        ],
-        [
-            'id'    => 125,
-            'name'  => 'Phil',
-            'email' => 'phil@thephpleague.com',
-        ],
-    ];
+        $users = [
+            [
+                'id'    => 123,
+                'name'  => 'Alex',
+                'email' => 'alex@thephpleague.com',
+            ],
+            [
+                'id'    => 124,
+                'name'  => 'Frank',
+                'email' => 'frank@thephpleague.com',
+            ],
+            [
+                'id'    => 125,
+                'name'  => 'Phil',
+                'email' => 'phil@thephpleague.com',
+            ],
+        ];
 
-    // If the access token doesn't have the `basic` scope hide users' names
-    if (in_array('basic', $request->getAttribute('oauth_scopes')) === false) {
-        for ($i = 0; $i < count($users); $i++) {
-            unset($users[$i]['name']);
+        // If the access token doesn't have the `basic` scope hide users' names
+        if (in_array('basic', $request->getAttribute('oauth_scopes')) === false) {
+            for ($i = 0; $i < count($users); $i++) {
+                unset($users[$i]['name']);
+            }
         }
-    }
 
-    // If the access token doesn't have the `emal` scope hide users' email addresses
-    if (in_array('email', $request->getAttribute('oauth_scopes')) === false) {
-        for ($i = 0; $i < count($users); $i++) {
-            unset($users[$i]['email']);
+        // If the access token doesn't have the `email` scope hide users' email addresses
+        if (in_array('email', $request->getAttribute('oauth_scopes')) === false) {
+            for ($i = 0; $i < count($users); $i++) {
+                unset($users[$i]['email']);
+            }
         }
+
+        $response->getBody()->write(json_encode($users));
+
+        return $response->withStatus(200);
     }
+);
 
-    $response->getBody()->write(json_encode($users));
-
-    return $response->withStatus(200);
-});
-
-$app->run();
+$app->run();

examples/public/client_credentials.php

@@ -30,9 +30,9 @@ $app = new App([
         $accessTokenRepository = new AccessTokenRepository(); // instance of AccessTokenRepositoryInterface
 
         // Path to public and private keys
-        $privateKey = 'file://path/to/private.key';
+        $privateKey = 'file://'.__DIR__.'/../private.key';
         //$privateKey = new CryptKey('file://path/to/private.key', 'passphrase'); // if private key has a pass phrase
-        $publicKey = 'file://path/to/public.key';
+        $publicKey = 'file://'.__DIR__.'/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(

examples/public/password.php

@@ -1,11 +1,4 @@
 <?php
-/**
- * @author      Alex Bilbie <hello@alexbilbie.com>
- * @copyright   Copyright (c) Alex Bilbie
- * @license     http://mit-license.org/
- *
- * @link        https://github.com/thephpleague/oauth2-server
- */
 
 use League\OAuth2\Server\AuthorizationServer;
 use League\OAuth2\Server\Exception\OAuthServerException;
@@ -18,58 +11,64 @@ use OAuth2ServerExamples\Repositories\UserRepository;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Slim\App;
-use Zend\Diactoros\Stream;
 
 include __DIR__ . '/../vendor/autoload.php';
 
 $app = new App([
-    'settings'    => [
-        'displayErrorDetails' => true,
-    ],
+    // Add the authorization server to the DI container
     AuthorizationServer::class => function () {
-        // Init our repositories
-        $clientRepository = new ClientRepository();
-        $accessTokenRepository = new AccessTokenRepository();
-        $scopeRepository = new ScopeRepository();
-        $userRepository = new UserRepository();
-        $refreshTokenRepository = new RefreshTokenRepository();
-
-        $privateKeyPath = 'file://' . __DIR__ . '/../private.key';
-        $publicKeyPath = 'file://' . __DIR__ . '/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(
-            $clientRepository,
-            $accessTokenRepository,
-            $scopeRepository,
-            $privateKeyPath,
-            $publicKeyPath
+            new ClientRepository(),                 // instance of ClientRepositoryInterface
+            new AccessTokenRepository(),            // instance of AccessTokenRepositoryInterface
+            new ScopeRepository(),                  // instance of ScopeRepositoryInterface
+            'file://'.__DIR__.'/../private.key',    // path to private key
+            'file://'.__DIR__.'/../public.key'      // path to public key
         );
 
+        $grant = new PasswordGrant(
+            new UserRepository(),           // instance of UserRepositoryInterface
+            new RefreshTokenRepository()    // instance of RefreshTokenRepositoryInterface
+        );
+        $grant->setRefreshTokenTTL(new \DateInterval('P1M')); // refresh tokens will expire after 1 month
+
         // Enable the password grant on the server with a token TTL of 1 hour
         $server->enableGrantType(
-            new PasswordGrant($userRepository, $refreshTokenRepository),
-            new \DateInterval('PT1H')
+            $grant,
+            new \DateInterval('PT1H') // access tokens will expire after 1 hour
         );
 
         return $server;
     },
 ]);
 
-$app->post('/access_token', function (ServerRequestInterface $request, ResponseInterface $response) use ($app) {
-    /* @var \League\OAuth2\Server\AuthorizationServer $server */
-    $server = $app->getContainer()->get(AuthorizationServer::class);
+$app->post(
+    '/access_token',
+    function (ServerRequestInterface $request, ResponseInterface $response) use ($app) {
 
-    try {
-        return $server->respondToAccessTokenRequest($request, $response);
-    } catch (OAuthServerException $exception) {
-        return $exception->generateHttpResponse($response);
-    } catch (\Exception $exception) {
-        $body = new Stream('php://temp', 'r+');
-        $body->write($exception->getMessage());
+        /* @var \League\OAuth2\Server\AuthorizationServer $server */
+        $server = $app->getContainer()->get(AuthorizationServer::class);
 
-        return $response->withStatus(500)->withBody($body);
+        try {
+
+            // Try to respond to the access token request
+            return $server->respondToAccessTokenRequest($request, $response);
+
+        } catch (OAuthServerException $exception) {
+
+            // All instances of OAuthServerException can be converted to a PSR-7 response
+            return $exception->generateHttpResponse($response);
+
+        } catch (\Exception $exception) {
+
+            // Catch unexpected exceptions
+            $body = $response->getBody();
+            $body->write($exception->getMessage());
+            return $response->withStatus(500)->withBody($body);
+
+        }
     }
-});
+);
 
 $app->run();

examples/src/Repositories/ClientRepository.php

@@ -17,13 +17,14 @@ class ClientRepository implements ClientRepositoryInterface
     /**
      * {@inheritdoc}
      */
-    public function getClientEntity($clientIdentifier, $clientSecret = null, $redirectUri = null, $grantType = null)
+    public function getClientEntity($clientIdentifier, $grantType, $clientSecret = null, $mustValidateSecret = true)
     {
         $clients = [
             'myawesomeapp' => [
-                'secret'       => password_hash('abc123', PASSWORD_BCRYPT),
-                'name'         => 'My Awesome App',
-                'redirect_uri' => 'http://foo/bar',
+                'secret'          => password_hash('abc123', PASSWORD_BCRYPT),
+                'name'            => 'My Awesome App',
+                'redirect_uri'    => 'http://foo/bar',
+                'is_confidential' => true,
             ],
         ];
 
@@ -32,6 +33,14 @@ class ClientRepository implements ClientRepositoryInterface
             return;
         }
 
+        if (
+            $mustValidateSecret === true
+            && $clients[$clientIdentifier]['is_confidential'] === true
+            && password_verify($clientSecret, $clients[$clientIdentifier]['secret']) === false
+        ) {
+            return;
+        }
+
         $client = new ClientEntity();
         $client->setIdentifier($clientIdentifier);
         $client->setName($clients[$clientIdentifier]['name']);

src/AuthorizationServer.php

@@ -156,7 +156,7 @@ class AuthorizationServer implements EmitterAwareInterface
      * @param \League\OAuth2\Server\RequestTypes\AuthorizationRequest $authRequest
      * @param \Psr\Http\Message\ResponseInterface                     $response
      *
-     * @return \League\OAuth2\Server\ResponseTypes\ResponseTypeInterface
+     * @return \Psr\Http\Message\ResponseInterface
      */
     public function completeAuthorizationRequest(AuthorizationRequest $authRequest, ResponseInterface $response)
     {
@@ -204,7 +204,7 @@ class AuthorizationServer implements EmitterAwareInterface
     protected function getResponseType()
     {
         if (!$this->responseType instanceof ResponseTypeInterface) {
-            $this->responseType = new BearerTokenResponse($this->accessTokenRepository);
+            $this->responseType = new BearerTokenResponse();
         }
 
         $this->responseType->setPrivateKey($this->privateKey);

src/Entities/Traits/AccessTokenTrait.php

@@ -13,6 +13,8 @@ use Lcobucci\JWT\Builder;
 use Lcobucci\JWT\Signer\Key;
 use Lcobucci\JWT\Signer\Rsa\Sha256;
 use League\OAuth2\Server\CryptKey;
+use League\OAuth2\Server\Entities\ClientEntityInterface;
+use League\OAuth2\Server\Entities\ScopeEntityInterface;
 
 trait AccessTokenTrait
 {
@@ -36,4 +38,24 @@ trait AccessTokenTrait
             ->sign(new Sha256(), new Key($privateKey->getKeyPath(), $privateKey->getPassPhrase()))
             ->getToken();
     }
+
+    /**
+     * @return ClientEntityInterface
+     */
+    abstract public function getClient();
+
+    /**
+     * @return \DateTime
+     */
+    abstract public function getExpiryDateTime();
+
+    /**
+     * @return string|int
+     */
+    abstract public function getUserIdentifier();
+
+    /**
+     * @return ScopeEntityInterface[]
+     */
+    abstract public function getScopes();
 }

src/Grant/AbstractGrant.php

@@ -35,11 +35,6 @@ abstract class AbstractGrant implements GrantTypeInterface
 
     const SCOPE_DELIMITER_STRING = ' ';
 
-    /**
-     * @var ServerRequestInterface
-     */
-    protected $request;
-
     /**
      * @var ClientRepositoryInterface
      */
@@ -161,11 +156,12 @@ abstract class AbstractGrant implements GrantTypeInterface
         $client = $this->clientRepository->getClientEntity(
             $clientId,
             $this->getIdentifier(),
-            $clientSecret
+            $clientSecret,
+            true
         );
 
         if (!$client instanceof ClientEntityInterface) {
-            $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
             throw OAuthServerException::invalidClient();
         }
 
@@ -176,13 +172,13 @@ abstract class AbstractGrant implements GrantTypeInterface
                 is_string($client->getRedirectUri())
                 && (strcmp($client->getRedirectUri(), $redirectUri) !== 0)
             ) {
-                $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+                $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
                 throw OAuthServerException::invalidClient();
             } elseif (
                 is_array($client->getRedirectUri())
                 && in_array($redirectUri, $client->getRedirectUri()) === false
             ) {
-                $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+                $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
                 throw OAuthServerException::invalidClient();
             }
         }

src/Grant/AuthCodeGrant.php

@@ -108,7 +108,12 @@ class AuthCodeGrant extends AbstractAuthorizeGrant
             }
 
             // Finalize the requested scopes
-            $scopes = $this->scopeRepository->finalizeScopes($scopes, $this->getIdentifier(), $client, $authCodePayload->user_id);
+            $scopes = $this->scopeRepository->finalizeScopes(
+                $scopes,
+                $this->getIdentifier(),
+                $client,
+                $authCodePayload->user_id
+            );
         } catch (\LogicException  $e) {
             throw OAuthServerException::invalidRequest('code', 'Cannot decrypt the authorization code');
         }
@@ -165,11 +170,13 @@ class AuthCodeGrant extends AbstractAuthorizeGrant
 
         $client = $this->clientRepository->getClientEntity(
             $clientId,
-            $this->getIdentifier()
+            $this->getIdentifier(),
+            null,
+            false
         );
 
         if ($client instanceof ClientEntityInterface === false) {
-            $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
             throw OAuthServerException::invalidClient();
         }
 
@@ -179,20 +186,22 @@ class AuthCodeGrant extends AbstractAuthorizeGrant
                 is_string($client->getRedirectUri())
                 && (strcmp($client->getRedirectUri(), $redirectUri) !== 0)
             ) {
-                $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+                $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
                 throw OAuthServerException::invalidClient();
             } elseif (
                 is_array($client->getRedirectUri())
                 && in_array($redirectUri, $client->getRedirectUri()) === false
             ) {
-                $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+                $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
                 throw OAuthServerException::invalidClient();
             }
         }
 
         $scopes = $this->validateScopes(
             $this->getQueryStringParameter('scope', $request),
-            $client->getRedirectUri()
+            is_array($client->getRedirectUri())
+                ? $client->getRedirectUri()[0]
+                : $client->getRedirectUri()
         );
 
         $stateParameter = $this->getQueryStringParameter('state', $request);
@@ -232,25 +241,25 @@ class AuthCodeGrant extends AbstractAuthorizeGrant
                 $authorizationRequest->getScopes()
             );
 
-            $redirectPayload['code'] = $this->encrypt(
-                json_encode(
-                    [
-                        'client_id'    => $authCode->getClient()->getIdentifier(),
-                        'redirect_uri' => $authCode->getRedirectUri(),
-                        'auth_code_id' => $authCode->getIdentifier(),
-                        'scopes'       => $authCode->getScopes(),
-                        'user_id'      => $authCode->getUserIdentifier(),
-                        'expire_time'  => (new \DateTime())->add($this->authCodeTTL)->format('U'),
-                    ]
-                )
-            );
-            $redirectPayload['state'] = $authorizationRequest->getState();
-
             $response = new RedirectResponse();
             $response->setRedirectUri(
                 $this->makeRedirectUri(
                     $finalRedirectUri,
-                    $redirectPayload
+                    [
+                        'code'  => $this->encrypt(
+                            json_encode(
+                                [
+                                    'client_id'    => $authCode->getClient()->getIdentifier(),
+                                    'redirect_uri' => $authCode->getRedirectUri(),
+                                    'auth_code_id' => $authCode->getIdentifier(),
+                                    'scopes'       => $authCode->getScopes(),
+                                    'user_id'      => $authCode->getUserIdentifier(),
+                                    'expire_time'  => (new \DateTime())->add($this->authCodeTTL)->format('U'),
+                                ]
+                            )
+                        ),
+                        'state' => $authorizationRequest->getState(),
+                    ]
                 )
             );
 

src/Grant/ImplicitGrant.php

@@ -41,7 +41,7 @@ class ImplicitGrant extends AbstractAuthorizeGrant
      */
     public function setRefreshTokenTTL(\DateInterval $refreshTokenTTL)
     {
-        throw new \LogicException('The Implicit Grant does nto return refresh tokens');
+        throw new \LogicException('The Implicit Grant does not return refresh tokens');
     }
 
     /**
@@ -51,7 +51,7 @@ class ImplicitGrant extends AbstractAuthorizeGrant
      */
     public function setRefreshTokenRepository(RefreshTokenRepositoryInterface $refreshTokenRepository)
     {
-        throw new \LogicException('The Implicit Grant does nto return refresh tokens');
+        throw new \LogicException('The Implicit Grant does not return refresh tokens');
     }
 
     /**
@@ -117,11 +117,13 @@ class ImplicitGrant extends AbstractAuthorizeGrant
 
         $client = $this->clientRepository->getClientEntity(
             $clientId,
-            $this->getIdentifier()
+            $this->getIdentifier(),
+            null,
+            false
         );
 
         if ($client instanceof ClientEntityInterface === false) {
-            $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
             throw OAuthServerException::invalidClient();
         }
 
@@ -131,20 +133,22 @@ class ImplicitGrant extends AbstractAuthorizeGrant
                 is_string($client->getRedirectUri())
                 && (strcmp($client->getRedirectUri(), $redirectUri) !== 0)
             ) {
-                $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+                $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
                 throw OAuthServerException::invalidClient();
             } elseif (
                 is_array($client->getRedirectUri())
                 && in_array($redirectUri, $client->getRedirectUri()) === false
             ) {
-                $this->getEmitter()->emit(new RequestEvent('client.authentication.failed', $request));
+                $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
                 throw OAuthServerException::invalidClient();
             }
         }
 
         $scopes = $this->validateScopes(
             $this->getQueryStringParameter('scope', $request),
-            $client->getRedirectUri()
+            is_array($client->getRedirectUri())
+                ? $client->getRedirectUri()[0]
+                : $client->getRedirectUri()
         );
 
         $stateParameter = $this->getQueryStringParameter('state', $request);
@@ -183,15 +187,16 @@ class ImplicitGrant extends AbstractAuthorizeGrant
                 $authorizationRequest->getScopes()
             );
 
-            $redirectPayload['access_token'] = (string) $accessToken->convertToJWT($this->privateKey);
-            $redirectPayload['token_type'] = 'bearer';
-            $redirectPayload['expires_in'] = $accessToken->getExpiryDateTime()->getTimestamp() - (new \DateTime())->getTimestamp();
-
             $response = new RedirectResponse();
             $response->setRedirectUri(
                 $this->makeRedirectUri(
                     $finalRedirectUri,
-                    $redirectPayload,
+                    [
+                        'access_token' => (string) $accessToken->convertToJWT($this->privateKey),
+                        'token_type'   => 'bearer',
+                        'expires_in'   => $accessToken->getExpiryDateTime()->getTimestamp() - (new \DateTime())->getTimestamp(),
+                        'state'        => $authorizationRequest->getState(),
+                    ],
                     '#'
                 )
             );

src/Grant/PasswordGrant.php

@@ -77,12 +77,12 @@ class PasswordGrant extends AbstractGrant
     {
         $username = $this->getRequestParameter('username', $request);
         if (is_null($username)) {
-            throw OAuthServerException::invalidRequest('username', '`%s` parameter is missing');
+            throw OAuthServerException::invalidRequest('username');
         }
 
         $password = $this->getRequestParameter('password', $request);
         if (is_null($password)) {
-            throw OAuthServerException::invalidRequest('password', '`%s` parameter is missing');
+            throw OAuthServerException::invalidRequest('password');
         }
 
         $user = $this->userRepository->getUserEntityByUserCredentials(
@@ -92,7 +92,7 @@ class PasswordGrant extends AbstractGrant
             $client
         );
         if (!$user instanceof UserEntityInterface) {
-            $this->getEmitter()->emit(new RequestEvent('user.authentication.failed', $request));
+            $this->getEmitter()->emit(new RequestEvent(RequestEvent::USER_AUTHENTICATION_FAILED, $request));
 
             throw OAuthServerException::invalidCredentials();
         }

src/Grant/RefreshTokenGrant.php

@@ -107,7 +107,7 @@ class RefreshTokenGrant extends AbstractGrant
 
         $refreshTokenData = json_decode($refreshToken, true);
         if ($refreshTokenData['client_id'] !== $clientId) {
-            $this->getEmitter()->emit(new RequestEvent('refresh_token.client.failed', $request));
+            $this->getEmitter()->emit(new RequestEvent(RequestEvent::REFRESH_TOKEN_CLIENT_FAILED, $request));
             throw OAuthServerException::invalidRefreshToken('Token is not linked to client');
         }
 

src/Repositories/ClientRepositoryInterface.php

@@ -16,11 +16,13 @@ interface ClientRepositoryInterface extends RepositoryInterface
     /**
      * Get a client.
      *
-     * @param string      $clientIdentifier The client's identifier
-     * @param string      $grantType        The grant type used
-     * @param null|string $clientSecret     The client's secret (if sent)
+     * @param string      $clientIdentifier   The client's identifier
+     * @param string      $grantType          The grant type used
+     * @param null|string $clientSecret       The client's secret (if sent)
+     * @param bool        $mustValidateSecret If true the client must attempt to validate the secret unless the client
+     *                                        is confidential
      *
      * @return \League\OAuth2\Server\Entities\ClientEntityInterface
      */
-    public function getClientEntity($clientIdentifier, $grantType, $clientSecret = null);
+    public function getClientEntity($clientIdentifier, $grantType, $clientSecret = null, $mustValidateSecret = true);
 }

src/RequestEvent.php

@@ -13,6 +13,10 @@ use Psr\Http\Message\ServerRequestInterface;
 
 class RequestEvent extends Event
 {
+    const CLIENT_AUTHENTICATION_FAILED = 'client.authentication.failed';
+    const USER_AUTHENTICATION_FAILED = 'user.authentication.failed';
+    const REFRESH_TOKEN_CLIENT_FAILED = 'refresh_token.client.failed';
+
     /**
      * @var \Psr\Http\Message\ServerRequestInterface
      */