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<?php |
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/** |
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* Linna Framework. |
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* |
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* @author Sebastian Rapetti <[email protected]> |
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* @copyright (c) 2018, Sebastian Rapetti |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Linna\Authorization; |
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use Linna\Authentication\Authentication; |
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use Linna\DataMapper\NullDomainObject; |
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/** |
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* Provide methods for check permissions for authenticated user. |
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*/ |
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class Authorization |
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{ |
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/** |
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* @var PermissionMapperInterface Permission Mapper |
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*/ |
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protected $permissionMapper; |
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/** |
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* @var Authentication Current authentication status |
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*/ |
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protected $authentication; |
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/** |
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* @var int User id |
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*/ |
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protected $userId = 0; |
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/** |
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* @var array User/Permission hash table |
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*/ |
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protected $hashTable; |
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/** |
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* Class Constructor. |
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* <pre><code class="php">use Linna\Auth\Authentication; |
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* use Linna\Auth\Authorization; |
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* use Linna\Auth\Password; |
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* use Linna\Session\Session; |
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* |
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* //your concrete permission mapper |
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* use YourApp\Mapper\PermissionMapper; |
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* |
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* $password = new Password(); |
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* $session = new Session(); |
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* |
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* $authentication = new Authentication($session, $password); |
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* $permissionMapper = new PermissionMapper(); |
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* |
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* $authorization = new Authorization($authentication, $permissionMapper); |
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* </code></pre> |
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* |
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* @param Authentication $authentication |
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* @param PermissionMapperInterface $permissionMapper |
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*/ |
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public function __construct(Authentication $authentication, PermissionMapperInterface $permissionMapper) |
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{ |
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$this->authentication = $authentication; |
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$this->permissionMapper = $permissionMapper; |
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$this->userId = $authentication->getLoginData()['user_id'] ?? 0; |
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$this->hashTable = $permissionMapper->fetchUserPermissionHashTable($this->userId); |
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} |
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/** |
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* Check if authenticated user has a permission. |
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* <pre><code class="php">$authorization = new Authorization($authentication, $permissionMapper); |
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* |
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* //with this example, the class checks if the authenticated |
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* //user has the permission 'update user'. |
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* $authorization->can('update user'); |
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* </code></pre> |
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* |
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* @param string $permissionName |
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* |
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* @return bool |
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*/ |
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public function can(string $permissionName): bool |
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{ |
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//get permission |
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$permission = $this->permissionMapper->fetchByName($permissionName); |
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//permission not exist |
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if ($permission instanceof NullDomainObject) { |
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return false; |
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} |
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//check if there is user logged |
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if (!$this->userId) { |
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return false; |
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} |
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//make hash for hash table check |
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$hash = hash('sha256', $this->userId.'.'.$permission->getId()); |
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return isset($this->hashTable[$hash]); |
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} |
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} |
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linna /
framework
