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<?php |
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namespace Chadicus\Slim\OAuth2\Middleware; |
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use ArrayAccess; |
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use Chadicus\Slim\OAuth2\Http\RequestBridge; |
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use Chadicus\Slim\OAuth2\Http\ResponseBridge; |
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use Chadicus\Psr\Middleware\MiddlewareInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use OAuth2; |
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/** |
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* Slim Middleware to handle OAuth2 Authorization. |
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*/ |
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class Authorization implements MiddlewareInterface |
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{ |
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/** |
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* OAuth2 Server |
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* |
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* @var OAuth2\Server |
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*/ |
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private $server; |
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/** |
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* Array of scopes required for authorization. |
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* |
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* @var array |
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*/ |
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private $scopes; |
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/** |
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* Container for token. |
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* |
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* @var ArrayAccess |
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*/ |
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private $container; |
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/** |
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* Create a new instance of the Authroization middleware. |
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* |
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* @param OAuth2\Server $server The configured OAuth2 server. |
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* @param ArrayAccess $container A container object in which to store the token from the request. |
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* @param array $scopes Scopes required for authorization. $scopes can be given as an array of arrays. OR |
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* logic will use with each grouping. Example: |
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* Given ['superUser', ['basicUser', 'aPermission']], the request will be verified |
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* if the request token has 'superUser' scope OR 'basicUser' and 'aPermission' as |
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* its scope. |
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*/ |
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public function __construct(OAuth2\Server $server, ArrayAccess $container, array $scopes = []) |
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{ |
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$this->server = $server; |
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$this->container = $container; |
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$this->scopes = $this->formatScopes($scopes); |
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} |
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/** |
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* Execute this middleware. |
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* |
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* @param ServerRequestInterface $request The PSR7 request. |
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* @param ResponseInterface $response The PSR7 response. |
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* @param callable $next The Next middleware. |
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* |
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* @return ResponseInterface |
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*/ |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next) |
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{ |
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$oauth2Request = RequestBridge::toOAuth2($request); |
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foreach ($this->scopes as $scope) { |
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if ($this->server->verifyResourceRequest($oauth2Request, null, $scope)) { |
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$this->container['token'] = $this->server->getResourceController()->getToken(); |
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return $next($request, $response); |
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} |
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} |
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return ResponseBridge::fromOAuth2($this->server->getResponse()); |
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} |
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/** |
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* Returns a callable function to be used as a authorization middleware with a specified scope. |
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* |
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* @param array $scopes Scopes require for authorization. |
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* |
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* @return Authorization |
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*/ |
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public function withRequiredScope(array $scopes) |
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{ |
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$clone = clone $this; |
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$clone->scopes = $clone->formatScopes($scopes); |
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return $clone; |
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} |
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/** |
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* Helper method to ensure given scopes are formatted properly. |
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* |
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* @param array $scopes Scopes required for authorization. |
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* |
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* @return array The formatted scopes array. |
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*/ |
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private function formatScopes(array $scopes) |
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{ |
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if (empty($scopes)) { |
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return [null]; //use at least 1 null scope |
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} |
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array_walk( |
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$scopes, |
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function (&$scope) { |
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if (is_array($scope)) { |
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$scope = implode(' ', $scope); |
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} |
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} |
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); |
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return $scopes; |
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} |
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} |
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chadicus /
slim-oauth2-middleware
This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass.
Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type.