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<?php |
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/** |
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* CakePHP(tm) : Rapid Development Framework (https://cakephp.org) |
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* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org) |
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* |
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* Licensed under The MIT License |
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* For full copyright and license information, please see the LICENSE.txt |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org) |
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* @link https://cakephp.org CakePHP(tm) Project |
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* @since 1.0.0 |
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* @license https://opensource.org/licenses/mit-license.php MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Phauthentic\Authorization\Policy; |
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use ArrayIterator; |
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use Phauthentic\Authorization\Policy\Exception\MissingPolicyException; |
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/** |
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* `ResolverCollection` is used for aggregating multiple resolvers when more than |
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* one resolver is necessary. The collection will iterate over configured resolvers |
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* and try to resolve a policy on each one. The first successfully resolved policy |
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* will be returned. |
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* |
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* Configured resolvers must throw `Authorization\Policy\Exception\MissingPolicyException` |
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* if a policy cannot be resolved. |
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* |
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* Example configuration: |
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* |
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* ``` |
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* $collection = new ResolverCollection([ |
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* new OrmResolver(), |
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* new MapResolver([ |
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* Service::class => ServicePolicy::class |
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* ]) |
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* ]); |
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* |
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* $service = new AuthenticationService($collection); |
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* ``` |
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*/ |
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class ResolverCollection implements ResolverInterface, ResolverCollectionInterface |
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{ |
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/** |
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* Policy resolver instances. |
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* |
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* @var \Phauthentic\Authorization\Policy\ResolverInterface[] |
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*/ |
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protected $resolvers = []; |
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/** |
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* Constructor. Takes an array of policy resolver instances. |
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* |
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* @param \Phauthentic\Authorization\Policy\ResolverInterface[] $resolvers An array of policy resolver instances. |
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*/ |
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public function __construct(array $resolvers = []) |
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{ |
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foreach ($resolvers as $resolver) { |
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$this->add($resolver); |
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} |
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} |
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/** |
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* Adds a resolver to the collection. |
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* |
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* @param \Phauthentic\Authorization\Policy\ResolverInterface $resolver Resolver instance. |
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* @return $this |
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*/ |
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public function add(ResolverInterface $resolver): ResolverCollectionInterface |
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{ |
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$this->resolvers[] = $resolver; |
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return $this; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function count(): int |
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{ |
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return count($this->resolvers); |
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} |
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/** |
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* Gets the iterator |
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* |
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* @return \Iterator |
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*/ |
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public function getIterator() |
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{ |
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return new ArrayIterator($this->resolvers); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getPolicy($resource) |
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{ |
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foreach ($this->resolvers as $resolver) { |
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try { |
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return $resolver->getPolicy($resource); |
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} catch (MissingPolicyException $e) { |
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} |
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} |
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$exception = new MissingPolicyException(); |
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throw $exception->setMessageVars([get_class($resource)]); |
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} |
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} |
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Phauthentic /
authorization
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