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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Rbac;
use Rbac\Role\RoleInterface;
use Rbac\Traversal\Strategy\TraversalStrategyInterface;
use Traversable;
/**
* Rbac object. It is used to check a permission against roles
*/
class Rbac
{
/**
* @var TraversalStrategyInterface
*/
protected $traversalStrategy;
/**
* @param TraversalStrategyInterface $strategy
*/
public function __construct(TraversalStrategyInterface $strategy)
{
$this->traversalStrategy = $strategy;
}
/**
* Determines if access is granted by checking the roles for permission.
*
* @param RoleInterface|RoleInterface[]|Traversable $roles
* @param mixed $permission
* @return bool
*/
public function isGranted($roles, $permission)
{
if ($roles instanceof RoleInterface) {
$roles = [$roles];
}
$iterator = $this->traversalStrategy->getRolesIterator($roles);
foreach ($iterator as $role) {
/* @var RoleInterface $role */
if ($role->hasPermission($permission)) {
return true;
}
}
return false;
}
/**
* Get the strategy.
*
* @return TraversalStrategyInterface
*/
public function getTraversalStrategy()
{
return $this->traversalStrategy;
}
}
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