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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2019, Roeland Jago Douma <[email protected]> |
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* |
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* @author Roeland Jago Douma <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace OC\Security\FeaturePolicy; |
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use OCP\AppFramework\Http\EmptyFeaturePolicy; |
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use OCP\EventDispatcher\IEventDispatcher; |
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use OCP\Security\FeaturePolicy\AddFeaturePolicyEvent; |
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class FeaturePolicyManager { |
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/** @var EmptyFeaturePolicy[] */ |
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private $policies = []; |
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/** @var IEventDispatcher */ |
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private $dispatcher; |
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public function __construct(IEventDispatcher $dispatcher) { |
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$this->dispatcher = $dispatcher; |
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} |
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public function addDefaultPolicy(EmptyFeaturePolicy $policy): void { |
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$this->policies[] = $policy; |
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} |
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public function getDefaultPolicy(): FeaturePolicy { |
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$event = new AddFeaturePolicyEvent($this); |
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$this->dispatcher->dispatch(AddFeaturePolicyEvent::class, $event); |
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$defaultPolicy = new FeaturePolicy(); |
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foreach ($this->policies as $policy) { |
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$defaultPolicy = $this->mergePolicies($defaultPolicy, $policy); |
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} |
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return $defaultPolicy; |
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} |
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/** |
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* Merges the first given policy with the second one |
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* |
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*/ |
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public function mergePolicies(FeaturePolicy $defaultPolicy, |
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EmptyFeaturePolicy $originalPolicy): FeaturePolicy { |
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foreach ((object)(array)$originalPolicy as $name => $value) { |
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$setter = 'set' . ucfirst($name); |
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if (\is_array($value)) { |
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$getter = 'get' . ucfirst($name); |
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$currentValues = \is_array($defaultPolicy->$getter()) ? $defaultPolicy->$getter() : []; |
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$defaultPolicy->$setter(\array_values(\array_unique(\array_merge($currentValues, $value)))); |
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} elseif (\is_bool($value)) { |
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$defaultPolicy->$setter($value); |
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} |
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} |
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return $defaultPolicy; |
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} |
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} |
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