137 lines
4.1 KiB
PHP
137 lines
4.1 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2017 Lukas Reschke <lukas@statuscode.ch>
|
|
*
|
|
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
* @author Lukas Reschke <lukas@statuscode.ch>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
namespace OC\AppFramework\Middleware\Security;
|
|
|
|
use OC\AppFramework\Utility\ControllerMethodReflector;
|
|
use OC\Security\RateLimiting\Exception\RateLimitExceededException;
|
|
use OC\Security\RateLimiting\Limiter;
|
|
use OCP\AppFramework\Http\JSONResponse;
|
|
use OCP\AppFramework\Http\TemplateResponse;
|
|
use OCP\AppFramework\Middleware;
|
|
use OCP\IRequest;
|
|
use OCP\IUserSession;
|
|
|
|
/**
|
|
* Class RateLimitingMiddleware is the middleware responsible for implementing the
|
|
* ratelimiting in Nextcloud.
|
|
*
|
|
* It parses annotations such as:
|
|
*
|
|
* @UserRateThrottle(limit=5, period=100)
|
|
* @AnonRateThrottle(limit=1, period=100)
|
|
*
|
|
* Those annotations above would mean that logged-in users can access the page 5
|
|
* times within 100 seconds, and anonymous users 1 time within 100 seconds. If
|
|
* only an AnonRateThrottle is specified that one will also be applied to logged-in
|
|
* users.
|
|
*
|
|
* @package OC\AppFramework\Middleware\Security
|
|
*/
|
|
class RateLimitingMiddleware extends Middleware {
|
|
/** @var IRequest $request */
|
|
private $request;
|
|
/** @var IUserSession */
|
|
private $userSession;
|
|
/** @var ControllerMethodReflector */
|
|
private $reflector;
|
|
/** @var Limiter */
|
|
private $limiter;
|
|
|
|
/**
|
|
* @param IRequest $request
|
|
* @param IUserSession $userSession
|
|
* @param ControllerMethodReflector $reflector
|
|
* @param Limiter $limiter
|
|
*/
|
|
public function __construct(IRequest $request,
|
|
IUserSession $userSession,
|
|
ControllerMethodReflector $reflector,
|
|
Limiter $limiter) {
|
|
$this->request = $request;
|
|
$this->userSession = $userSession;
|
|
$this->reflector = $reflector;
|
|
$this->limiter = $limiter;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
* @throws RateLimitExceededException
|
|
*/
|
|
public function beforeController($controller, $methodName) {
|
|
parent::beforeController($controller, $methodName);
|
|
|
|
$anonLimit = $this->reflector->getAnnotationParameter('AnonRateThrottle', 'limit');
|
|
$anonPeriod = $this->reflector->getAnnotationParameter('AnonRateThrottle', 'period');
|
|
$userLimit = $this->reflector->getAnnotationParameter('UserRateThrottle', 'limit');
|
|
$userPeriod = $this->reflector->getAnnotationParameter('UserRateThrottle', 'period');
|
|
$rateLimitIdentifier = get_class($controller) . '::' . $methodName;
|
|
if ($userLimit !== '' && $userPeriod !== '' && $this->userSession->isLoggedIn()) {
|
|
$this->limiter->registerUserRequest(
|
|
$rateLimitIdentifier,
|
|
$userLimit,
|
|
$userPeriod,
|
|
$this->userSession->getUser()
|
|
);
|
|
} elseif ($anonLimit !== '' && $anonPeriod !== '') {
|
|
$this->limiter->registerAnonRequest(
|
|
$rateLimitIdentifier,
|
|
$anonLimit,
|
|
$anonPeriod,
|
|
$this->request->getRemoteAddress()
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function afterException($controller, $methodName, \Exception $exception) {
|
|
if ($exception instanceof RateLimitExceededException) {
|
|
if (stripos($this->request->getHeader('Accept'),'html') === false) {
|
|
$response = new JSONResponse(
|
|
[
|
|
'message' => $exception->getMessage(),
|
|
],
|
|
$exception->getCode()
|
|
);
|
|
} else {
|
|
$response = new TemplateResponse(
|
|
'core',
|
|
'403',
|
|
[
|
|
'file' => $exception->getMessage()
|
|
],
|
|
'guest'
|
|
);
|
|
$response->setStatus($exception->getCode());
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
throw $exception;
|
|
}
|
|
}
|