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<?php |
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/** |
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* @copyright Copyright (c) 2017 Lukas Reschke <[email protected]> |
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* |
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* @author Lukas Reschke <[email protected]> |
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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\AppFramework\Utility\ControllerMethodReflector; |
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use OC\Security\RateLimiting\Exception\RateLimitExceededException; |
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use OC\Security\RateLimiting\Limiter; |
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use OCP\AppFramework\Http\JSONResponse; |
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use OCP\AppFramework\Http\TemplateResponse; |
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use OCP\AppFramework\Middleware; |
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use OCP\IRequest; |
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use OCP\IUserSession; |
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/** |
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* Class RateLimitingMiddleware is the middleware responsible for implementing the |
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* ratelimiting in Nextcloud. |
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* |
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* It parses annotations such as: |
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* |
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* @UserRateThrottle(limit=5, period=100) |
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* @AnonRateThrottle(limit=1, period=100) |
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* |
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* Those annotations above would mean that logged-in users can access the page 5 |
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* times within 100 seconds, and anonymous users 1 time within 100 seconds. If |
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* only an AnonRateThrottle is specified that one will also be applied to logged-in |
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* users. |
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* |
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* @package OC\AppFramework\Middleware\Security |
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*/ |
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class RateLimitingMiddleware extends Middleware { |
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/** @var IRequest $request */ |
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private $request; |
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/** @var IUserSession */ |
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private $userSession; |
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/** @var ControllerMethodReflector */ |
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private $reflector; |
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/** @var Limiter */ |
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private $limiter; |
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/** |
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* @param IRequest $request |
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* @param IUserSession $userSession |
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* @param ControllerMethodReflector $reflector |
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* @param Limiter $limiter |
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*/ |
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public function __construct(IRequest $request, |
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IUserSession $userSession, |
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ControllerMethodReflector $reflector, |
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Limiter $limiter) { |
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$this->request = $request; |
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$this->userSession = $userSession; |
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$this->reflector = $reflector; |
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$this->limiter = $limiter; |
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} |
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/** |
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* {@inheritDoc} |
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* @throws RateLimitExceededException |
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*/ |
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public function beforeController($controller, $methodName) { |
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parent::beforeController($controller, $methodName); |
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$anonLimit = $this->reflector->getAnnotationParameter('AnonRateThrottle', 'limit'); |
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$anonPeriod = $this->reflector->getAnnotationParameter('AnonRateThrottle', 'period'); |
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$userLimit = $this->reflector->getAnnotationParameter('UserRateThrottle', 'limit'); |
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$userPeriod = $this->reflector->getAnnotationParameter('UserRateThrottle', 'period'); |
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$rateLimitIdentifier = get_class($controller) . '::' . $methodName; |
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if($userLimit !== '' && $userPeriod !== '' && $this->userSession->isLoggedIn()) { |
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$this->limiter->registerUserRequest( |
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$rateLimitIdentifier, |
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$userLimit, |
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$userPeriod, |
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$this->userSession->getUser() |
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); |
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} elseif ($anonLimit !== '' && $anonPeriod !== '') { |
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$this->limiter->registerAnonRequest( |
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$rateLimitIdentifier, |
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$anonLimit, |
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$anonPeriod, |
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$this->request->getRemoteAddress() |
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); |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function afterException($controller, $methodName, \Exception $exception) { |
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if($exception instanceof RateLimitExceededException) { |
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if (stripos($this->request->getHeader('Accept'),'html') === false) { |
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$response = new JSONResponse( |
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[ |
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'message' => $exception->getMessage(), |
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], |
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$exception->getCode() |
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); |
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} else { |
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$response = new TemplateResponse( |
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'core', |
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'403', |
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[ |
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'file' => $exception->getMessage() |
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], |
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'guest' |
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); |
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$response->setStatus($exception->getCode()); |
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} |
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return $response; |
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} |
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throw $exception; |
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} |
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} |
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nextcloud /
server
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