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<?php /** * @copyright Copyright (c) 2016, ownCloud, Inc. * * @author Lukas Reschke <lukas@statuscode.ch> * * @license AGPL-3.0 * * This code is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, version 3, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License, version 3, * along with this program. If not, see <http://www.gnu.org/licenses/> * */ namespace OC\Security\CSP; use OCP\AppFramework\Http\ContentSecurityPolicy; use OCP\AppFramework\Http\EmptyContentSecurityPolicy; use OCP\Security\IContentSecurityPolicyManager; class ContentSecurityPolicyManager implements IContentSecurityPolicyManager { /** @var ContentSecurityPolicy[] */ private $policies = []; /** {@inheritdoc} */ public function addDefaultPolicy(EmptyContentSecurityPolicy $policy) { $this->policies[] = $policy; } /** * Get the configured default policy. This is not in the public namespace * as it is only supposed to be used by core itself. * * @return ContentSecurityPolicy */ public function getDefaultPolicy() { $defaultPolicy = new \OC\Security\CSP\ContentSecurityPolicy(); foreach($this->policies as $policy) { $defaultPolicy = $this->mergePolicies($defaultPolicy, $policy); } return $defaultPolicy; } /** * Merges the first given policy with the second one * * @param ContentSecurityPolicy $defaultPolicy * @param EmptyContentSecurityPolicy $originalPolicy * @return ContentSecurityPolicy */ public function mergePolicies(ContentSecurityPolicy $defaultPolicy, EmptyContentSecurityPolicy $originalPolicy) { foreach((object)(array)$originalPolicy as $name => $value) { $setter = 'set'.ucfirst($name); if(is_array($value)) { $getter = 'get'.ucfirst($name); $currentValues = is_array($defaultPolicy->$getter()) ? $defaultPolicy->$getter() : []; $defaultPolicy->$setter(array_values(array_unique(array_merge($currentValues, $value)))); } elseif (is_bool($value)) { $defaultPolicy->$setter($value); } } return $defaultPolicy; } }
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