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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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* @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\RateLimiting; |
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use OC\Security\Normalizer\IpAddress; |
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use OC\Security\RateLimiting\Backend\IBackend; |
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use OC\Security\RateLimiting\Exception\RateLimitExceededException; |
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use OCP\AppFramework\Utility\ITimeFactory; |
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use OCP\IRequest; |
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use OCP\IUser; |
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use OCP\IUserSession; |
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class Limiter { |
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/** @var IBackend */ |
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private $backend; |
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/** @var ITimeFactory */ |
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private $timeFactory; |
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/** |
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* @param IUserSession $userSession |
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* @param IRequest $request |
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* @param ITimeFactory $timeFactory |
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* @param IBackend $backend |
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*/ |
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public function __construct(IUserSession $userSession, |
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IRequest $request, |
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ITimeFactory $timeFactory, |
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IBackend $backend) { |
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$this->backend = $backend; |
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$this->timeFactory = $timeFactory; |
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} |
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/** |
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* @param string $methodIdentifier |
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* @param string $userIdentifier |
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* @param int $period |
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* @param int $limit |
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* @throws RateLimitExceededException |
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*/ |
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private function register($methodIdentifier, |
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$userIdentifier, |
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$period, |
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$limit) { |
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$existingAttempts = $this->backend->getAttempts($methodIdentifier, $userIdentifier, (int)$period); |
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if ($existingAttempts >= (int)$limit) { |
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throw new RateLimitExceededException(); |
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} |
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$this->backend->registerAttempt($methodIdentifier, $userIdentifier, $this->timeFactory->getTime()); |
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} |
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/** |
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* Registers attempt for an anonymous request |
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* |
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* @param string $identifier |
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* @param int $anonLimit |
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* @param int $anonPeriod |
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* @param string $ip |
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* @throws RateLimitExceededException |
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*/ |
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public function registerAnonRequest($identifier, |
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$anonLimit, |
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$anonPeriod, |
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$ip) { |
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$ipSubnet = (new IpAddress($ip))->getSubnet(); |
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$anonHashIdentifier = hash('sha512', 'anon::' . $identifier . $ipSubnet); |
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$this->register($identifier, $anonHashIdentifier, $anonPeriod, $anonLimit); |
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} |
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/** |
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* Registers attempt for an authenticated request |
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* |
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* @param string $identifier |
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* @param int $userLimit |
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* @param int $userPeriod |
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* @param IUser $user |
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* @throws RateLimitExceededException |
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*/ |
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public function registerUserRequest($identifier, |
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$userLimit, |
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$userPeriod, |
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IUser $user) { |
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$userHashIdentifier = hash('sha512', 'user::' . $identifier . $user->getUID()); |
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$this->register($identifier, $userHashIdentifier, $userPeriod, $userLimit); |
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} |
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} |
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nextcloud /
server
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.