107 lines
3.0 KiB
PHP
107 lines
3.0 KiB
PHP
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<?php
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/**
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* @copyright 2017, 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\AppFramework\Http\Request;
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use OC\AppFramework\Middleware\Security\Exceptions\LaxSameSiteCookieFailedException;
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use OC\AppFramework\Utility\ControllerMethodReflector;
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use OCP\AppFramework\Http;
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use OCP\AppFramework\Http\Response;
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use OCP\AppFramework\Middleware;
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class SameSiteCookieMiddleware extends Middleware {
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/** @var Request */
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private $request;
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/** @var ControllerMethodReflector */
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private $reflector;
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public function __construct(Request $request,
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ControllerMethodReflector $reflector) {
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$this->request = $request;
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$this->reflector = $reflector;
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}
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public function beforeController($controller, $methodName) {
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$requestUri = $this->request->getScriptName();
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$processingScript = explode('/', $requestUri);
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$processingScript = $processingScript[count($processingScript)-1];
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if ($processingScript !== 'index.php') {
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return;
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}
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$noSSC = $this->reflector->hasAnnotation('NoSameSiteCookieRequired');
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if ($noSSC) {
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return;
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}
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if (!$this->request->passesLaxCookieCheck()) {
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throw new LaxSameSiteCookieFailedException();
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}
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}
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public function afterException($controller, $methodName, \Exception $exception) {
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if ($exception instanceof LaxSameSiteCookieFailedException) {
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$respone = new Response();
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$respone->setStatus(Http::STATUS_FOUND);
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$respone->addHeader('Location', $this->request->getRequestUri());
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$this->setSameSiteCookie();
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return $respone;
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}
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throw $exception;
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}
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protected function setSameSiteCookie() {
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$cookieParams = $this->request->getCookieParams();
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$secureCookie = ($cookieParams['secure'] === true) ? 'secure; ' : '';
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$policies = [
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'lax',
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'strict',
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];
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// Append __Host to the cookie if it meets the requirements
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$cookiePrefix = '';
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if($cookieParams['secure'] === true && $cookieParams['path'] === '/') {
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$cookiePrefix = '__Host-';
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}
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foreach($policies as $policy) {
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header(
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sprintf(
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'Set-Cookie: %snc_sameSiteCookie%s=true; path=%s; httponly;' . $secureCookie . 'expires=Fri, 31-Dec-2100 23:59:59 GMT; SameSite=%s',
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$cookiePrefix,
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$policy,
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$cookieParams['path'],
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$policy
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),
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false
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);
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}
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}
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}
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