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<?php |
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/** |
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* WebHemi. |
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* |
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* PHP version 5.6 |
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* |
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* @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com) |
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* @license https://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link http://www.gixx-web.com |
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*/ |
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namespace WebHemi\Middleware\Security; |
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use Exception; |
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use WebHemi\Adapter\Auth\AuthAdapterInterface; |
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use WebHemi\Adapter\Http\ResponseInterface; |
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use WebHemi\Adapter\Http\ServerRequestInterface; |
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use WebHemi\Application\EnvironmentManager; |
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use WebHemi\Auth\Result; |
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use WebHemi\Data\Coupler\UserToGroupCoupler; |
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use WebHemi\Data\Coupler\UserToPolicyCoupler; |
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use WebHemi\Data\Coupler\UserGroupToPolicyCoupler; |
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use WebHemi\Data\Entity\ApplicationEntity; |
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use WebHemi\Data\Entity\AccessManagement\PolicyEntity; |
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use WebHemi\Data\Entity\AccessManagement\ResourceEntity; |
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use WebHemi\Data\Entity\User\UserEntity; |
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use WebHemi\Data\Storage\AccessManagement\ResourceStorage; |
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use WebHemi\Data\Storage\ApplicationStorage; |
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use WebHemi\Middleware\MiddlewareInterface; |
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use WebHemi\Middleware\Action; |
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/** |
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* Class AclMiddleware. |
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*/ |
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class AclMiddleware implements MiddlewareInterface |
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{ |
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/** @var EnvironmentManager */ |
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private $environmentManager; |
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/** @var AuthAdapterInterface */ |
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private $authAdapter; |
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/** @var UserToPolicyCoupler */ |
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private $userToPolicyCoupler; |
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/** @var UserToGroupCoupler */ |
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private $userToGroupCoupler; |
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/** @var UserGroupToPolicyCoupler */ |
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private $userGroupToPolicyCoupler; |
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private $applicationStorage; |
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private $resourceStorage; |
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/** @var array */ |
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private $middlewareWhiteList = [ |
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Action\Auth\LoginAction::class, |
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Action\Auth\LogoutAction::class, |
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]; |
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/** |
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* AclMiddleware constructor. |
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* @param AuthAdapterInterface $authAdapter |
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* @param EnvironmentManager $environmentManager |
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* @param UserToPolicyCoupler $userToPolicyCoupler |
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* @param UserToGroupCoupler $userToGroupCoupler |
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* @param UserGroupToPolicyCoupler $userGroupToPolicyCoupler |
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* @param ApplicationStorage $applicationStorage |
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* @param ResourceStorage $resourceStorage |
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*/ |
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public function __construct( |
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AuthAdapterInterface $authAdapter, |
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EnvironmentManager $environmentManager, |
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UserToPolicyCoupler $userToPolicyCoupler, |
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UserToGroupCoupler $userToGroupCoupler, |
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UserGroupToPolicyCoupler $userGroupToPolicyCoupler, |
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ApplicationStorage $applicationStorage, |
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ResourceStorage $resourceStorage |
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) { |
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$this->authAdapter = $authAdapter; |
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$this->environmentManager = $environmentManager; |
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$this->userToPolicyCoupler = $userToPolicyCoupler; |
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$this->userToGroupCoupler = $userToGroupCoupler; |
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$this->userGroupToPolicyCoupler = $userGroupToPolicyCoupler; |
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$this->applicationStorage = $applicationStorage; |
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$this->resourceStorage = $resourceStorage; |
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} |
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/** |
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* A middleware is a callable. It can do whatever is appropriate with the Request and Response objects. |
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* The only hard requirement is that a middleware MUST return an instance of \Psr\Http\Message\ResponseInterface. |
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* Each middleware SHOULD invoke the next middleware and pass it Request and Response objects as arguments. |
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* |
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* @param ServerRequestInterface $request |
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* @param ResponseInterface $response |
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* @throws Exception |
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* @return ResponseInterface |
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*/ |
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public function __invoke(ServerRequestInterface &$request, ResponseInterface $response) |
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{ |
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$actionMiddleware = $request->getAttribute(ServerRequestInterface::REQUEST_ATTR_RESOLVED_ACTION_CLASS); |
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$identity = false; |
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if (in_array($actionMiddleware, $this->middlewareWhiteList)) { |
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return $response; |
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} |
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if ($this->authAdapter->hasIdentity()) { |
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$identity = $this->authAdapter->getIdentity(); |
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} |
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if ($identity instanceof UserEntity) { |
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$selectedApplication = $this->environmentManager->getSelectedApplication(); |
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/** @var ApplicationEntity $applicationEntity */ |
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$applicationEntity = $this->applicationStorage->getApplicationByName($selectedApplication); |
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/** @var ResourceEntity $resourceEntity */ |
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$resourceEntity = $this->resourceStorage->getResourceByName($actionMiddleware); |
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// First we check the group policies |
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/** @var array<UserGroupEntity> $userGroups */ |
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$userGroups = $this->userToGroupCoupler->getEntityDependencies($identity); |
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/** @var array<PolicyEntity> $userGroupPolicies */ |
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$userGroupPolicies = []; |
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foreach ($userGroups as $userGroupEntity) { |
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$groupPolicies = $this->userGroupToPolicyCoupler->getEntityDependencies($userGroupEntity); |
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$userGroupPolicies = array_merge($userGroupPolicies, $groupPolicies); |
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} |
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$hasAccess = $this->checkPolicies($userGroupPolicies, $applicationEntity, $resourceEntity); |
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// Then we check the personal policies |
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/** @var array<PolicyEntity> $userPolicies */ |
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$userPolicies = $this->userToPolicyCoupler->getEntityDependencies($identity); |
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$hasAccess = $hasAccess && $this->checkPolicies($userPolicies, $applicationEntity, $resourceEntity); |
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if (!$hasAccess) { |
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$response = $response->withStatus(ResponseInterface::STATUS_FORBIDDEN, 'Forbidden'); |
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} |
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} else { |
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$appUri = rtrim($this->environmentManager->getSelectedApplicationUri(), '/'); |
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$response = $response->withStatus(ResponseInterface::STATUS_REDIRECT, 'Found') |
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->withHeader('Location', $appUri.'/auth/login'); |
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} |
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return $response; |
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} |
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/** |
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* Checks policies for application and resource |
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* |
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* @param array<PolicyEntity> $policies |
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* @param ApplicationEntity|null $applicationEntity |
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* @param ResourceEntity|null $resourceEntity |
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* @return bool |
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*/ |
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private function checkPolicies( |
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array $policies, |
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ApplicationEntity $applicationEntity = null, |
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ResourceEntity $resourceEntity = null |
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) { |
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// We assume the best case: the user has access |
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$hasAccess = true; |
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/** @var PolicyEntity $policyEntity */ |
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foreach ($policies as $policyEntity) { |
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$hasAccess = $hasAccess && $this->checkPolicy($policyEntity, $applicationEntity, $resourceEntity); |
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} |
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return $hasAccess; |
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} |
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/** |
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* @param PolicyEntity $policyEntity |
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* @param ApplicationEntity|null $applicationEntity |
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* @param ResourceEntity|null $resourceEntity |
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* @return bool |
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*/ |
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private function checkPolicy( |
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PolicyEntity $policyEntity, |
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ApplicationEntity $applicationEntity = null, |
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ResourceEntity $resourceEntity = null |
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) { |
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$applicationId = $applicationEntity ? $applicationEntity->getApplicationId() : null; |
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$resourceId = $resourceEntity ? $resourceEntity->getResourceId() : null; |
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$policyApplicationId = $policyEntity->getApplicationId(); |
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$policyResourceId = $policyEntity->getResourceId(); |
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// The user has access when: |
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// - user has a policy that connected to the current application OR any application AND |
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// - user has a policy that connected to the current resource OR any resource |
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if (($policyApplicationId == null || $policyApplicationId == $applicationId) |
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&& ($policyResourceId == null || $policyResourceId == $resourceId) |
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) { |
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return $policyEntity->getAllowed(); |
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} |
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// At this point we know that the current policy doesn't belong to this application or resource, so no need |
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// to block the user. |
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return true; |
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} |
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} |
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Gixx /
WebHemi
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: