f93a82b8b0
This is public API and breaks the middlewares of existing apps. Since this also requires maintaining two different code paths for 12 and 13 I'm at the moment voting for reverting this change. Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
134 lines
4 KiB
PHP
134 lines
4 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2017 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\Controller;
|
|
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;
|
|
}
|
|
}
|