81 lines
2.8 KiB
PHP
81 lines
2.8 KiB
PHP
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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 <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\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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