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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\AppFramework\Middleware\Security; |
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use OC\Security\CSP\ContentSecurityPolicyManager; |
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use OC\Security\CSP\ContentSecurityPolicyNonceManager; |
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use OC\Security\CSRF\CsrfTokenManager; |
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use OCP\AppFramework\Controller; |
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use OCP\AppFramework\Http\ContentSecurityPolicy; |
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use OCP\AppFramework\Http\EmptyContentSecurityPolicy; |
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use OCP\AppFramework\Http\Response; |
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use OCP\AppFramework\Middleware; |
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class CSPMiddleware extends Middleware { |
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/** @var ContentSecurityPolicyManager */ |
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private $contentSecurityPolicyManager; |
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/** @var ContentSecurityPolicyNonceManager */ |
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private $cspNonceManager; |
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/** @var CsrfTokenManager */ |
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private $csrfTokenManager; |
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public function __construct(ContentSecurityPolicyManager $policyManager, |
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ContentSecurityPolicyNonceManager $cspNonceManager, |
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CsrfTokenManager $csrfTokenManager) { |
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$this->contentSecurityPolicyManager = $policyManager; |
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$this->cspNonceManager = $cspNonceManager; |
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$this->csrfTokenManager = $csrfTokenManager; |
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} |
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/** |
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* Performs the default CSP modifications that may be injected by other |
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* applications |
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* |
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* @param Controller $controller |
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* @param string $methodName |
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* @param Response $response |
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* @return Response |
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*/ |
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public function afterController($controller, $methodName, Response $response): Response { |
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$policy = !is_null($response->getContentSecurityPolicy()) ? $response->getContentSecurityPolicy() : new ContentSecurityPolicy(); |
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if (get_class($policy) === EmptyContentSecurityPolicy::class) { |
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return $response; |
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} |
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$defaultPolicy = $this->contentSecurityPolicyManager->getDefaultPolicy(); |
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$defaultPolicy = $this->contentSecurityPolicyManager->mergePolicies($defaultPolicy, $policy); |
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if($this->cspNonceManager->browserSupportsCspV3()) { |
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$defaultPolicy->useJsNonce($this->csrfTokenManager->getToken()->getEncryptedValue()); |
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} |
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$response->setContentSecurityPolicy($defaultPolicy); |
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return $response; |
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} |
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} |
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nextcloud /
server
