79 lines
2.4 KiB
PHP
79 lines
2.4 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2019, Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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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