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<?php |
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declare(strict_types=1); |
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/** |
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* Minotaur |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not |
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* use this file except in compliance with the License. You may obtain a copy of |
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* the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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* License for the specific language governing permissions and limitations under |
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* the License. |
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* |
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* @copyright 2015-2017 Appertly |
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* @license Apache-2.0 |
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*/ |
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namespace Minotaur\Acl; |
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/** |
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* Immutable access control helper. |
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* |
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* This class determines the user's subjects upon instantiation and stores them |
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* for its duration. |
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*/ |
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class Gatekeeper |
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{ |
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/** |
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* @var \Caridea\Acl\Service |
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*/ |
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private $aclService; |
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/** |
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* @var \Caridea\Auth\Principal |
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*/ |
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private $principal; |
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/** |
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* @var array<\Caridea\Acl\Subject> |
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*/ |
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private $subjects; |
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/** |
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* Creates a new Gatekeeper. |
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* |
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* @param \Caridea\Acl\Service $aclService The ACL service |
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* @param \Caridea\Auth\Principal $principal The authenticated principal |
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* @param array<\Minotaur\Acl\SubjectResolver> $subjectResolvers Any additional subject resolvers |
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*/ |
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public function __construct( |
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\Caridea\Acl\Service $aclService, |
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\Caridea\Auth\Principal $principal, |
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array $subjectResolvers |
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) { |
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$this->aclService = $aclService; |
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$this->principal = $principal; |
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$subjects = [\Caridea\Acl\Subject::principal((string)$principal->getUsername())]; |
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foreach ($subjectResolvers as $resolver) { |
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foreach($resolver->getSubjects($principal) as $subject){ |
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$subjects[] = $subject; |
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} |
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} |
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$this->subjects = $subjects; |
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} |
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/** |
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* Determines if the currently authenticated user can access the resource. |
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* |
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* @param $verb - The verb (e.g. 'read', 'write') |
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* @param $type - The type of object |
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* @param $id - The object identifier |
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* @throws \Caridea\Acl\Exception\Forbidden If the user has no access |
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*/ |
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public function assert(string $verb, string $type, $id): void |
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{ |
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$this->aclService->assert( |
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$this->subjects, |
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$verb, |
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new \Caridea\Acl\Target($type, $id) |
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); |
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} |
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/** |
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* Determines if the currently authenticated user can access the resources. |
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* |
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* @param string $verb The verb (e.g. 'read', 'write') |
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* @param string $type The type of object |
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* @param iterable<mixed> $ids The object identifiers |
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* @throws \Caridea\Acl\Exception\Forbidden If the user has no access |
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*/ |
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public function assertAll(string $verb, string $type, iterable $ids): void |
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{ |
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$targets = array_map(function ($a) use ($type) { |
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return new \Caridea\Acl\Target($type, $a); |
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}, is_array($ids) ? $ids : iterator_to_array($ids)); |
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$acls = $this->aclService->getAll($targets, $this->subjects); |
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foreach ($acls as $acl) { |
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if (!$acl->can($this->subjects, $verb)) { |
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throw new \Caridea\Acl\Exception\Forbidden("Access denied to $verb " . (string)$acl->getTarget()); |
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} |
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} |
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} |
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/** |
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* Determines if the currently authenticated user can access the resource. |
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* |
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* @param string $verb The verb (e.g. 'read', 'write') |
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* @param string $type The type of object |
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* @param mixed $id The object identifier |
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* @return bool Whether the user has access |
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*/ |
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public function can(string $verb, string $type, $id): bool |
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{ |
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return $this->aclService->can( |
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$this->subjects, |
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$verb, |
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new \Caridea\Acl\Target($type, $id) |
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); |
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} |
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} |
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appertly /
minotaur
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