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<?php |
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/** |
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* @copyright Copyright (c) 2016 Lukas Reschke <[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\CSP; |
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use OC\Security\CSRF\CsrfTokenManager; |
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use OCP\IRequest; |
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/** |
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* @package OC\Security\CSP |
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*/ |
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class ContentSecurityPolicyNonceManager { |
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/** @var CsrfTokenManager */ |
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private $csrfTokenManager; |
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/** @var IRequest */ |
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private $request; |
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/** @var string */ |
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private $nonce = ''; |
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/** |
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* @param CsrfTokenManager $csrfTokenManager |
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* @param IRequest $request |
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*/ |
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public function __construct(CsrfTokenManager $csrfTokenManager, |
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IRequest $request) { |
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$this->csrfTokenManager = $csrfTokenManager; |
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$this->request = $request; |
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} |
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/** |
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* Returns the current CSP nounce |
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* |
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* @return string |
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*/ |
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public function getNonce() { |
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if($this->nonce === '') { |
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$this->nonce = base64_encode($this->csrfTokenManager->getToken()->getEncryptedValue()); |
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} |
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return $this->nonce; |
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} |
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/** |
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* Check if the browser supports CSP v3 |
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* |
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* @return bool |
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*/ |
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public function browserSupportsCspV3() { |
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$browserWhitelist = [ |
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// Chrome 40+ |
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'/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Chrome\/[4-9][0-9].[0-9.]+ (Mobile Safari|Safari)\/[0-9.]+$/', |
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// Firefox 45+ |
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'/^Mozilla\/5\.0 \([^)]+\) Gecko\/[0-9.]+ Firefox\/(4[5-9]|[5-9][0-9])\.[0-9.]+$/', |
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// Safari 10+ |
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'/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Version\/1[0-9.]+ Safari\/[0-9.A-Z]+$/', |
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]; |
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if($this->request->isUserAgent($browserWhitelist)) { |
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return true; |
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} |
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return false; |
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} |
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} |
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nextcloud /
server
