1 files changed, 0 insertions, 129 deletions
diff --git a/lib/private/Security/RateLimiting/Backend/MemoryCache.php b/lib/private/Security/RateLimiting/Backend/MemoryCache.php
deleted file mode 100644
index 2893d31ece2..00000000000
--- a/lib/private/Security/RateLimiting/Backend/MemoryCache.php
+++ /dev/null
@@ -1,129 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * @copyright Copyright (c) 2017 Lukas Reschke <lukas@statuscode.ch>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @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\Security\RateLimiting\Backend;
-
-use OCP\AppFramework\Utility\ITimeFactory;
-use OCP\ICache;
-use OCP\ICacheFactory;
-
-/**
- * Class MemoryCache uses the configured distributed memory cache for storing
- * rate limiting data.
- *
- * @package OC\Security\RateLimiting\Backend
- */
-class MemoryCache implements IBackend {
-	/** @var ICache */
-	private $cache;
-	/** @var ITimeFactory */
-	private $timeFactory;
-
-	/**
-	 * @param ICacheFactory $cacheFactory
-	 * @param ITimeFactory $timeFactory
-	 */
-	public function __construct(ICacheFactory $cacheFactory,
-								ITimeFactory $timeFactory) {
-		$this->cache = $cacheFactory->createDistributed(__CLASS__);
-		$this->timeFactory = $timeFactory;
-	}
-
-	/**
-	 * @param string $methodIdentifier
-	 * @param string $userIdentifier
-	 * @return string
-	 */
-	private function hash(string $methodIdentifier,
-						  string $userIdentifier): string {
-		return hash('sha512', $methodIdentifier . $userIdentifier);
-	}
-
-	/**
-	 * @param string $identifier
-	 * @return array
-	 */
-	private function getExistingAttempts(string $identifier): array {
-		$cachedAttempts = $this->cache->get($identifier);
-		if ($cachedAttempts === null) {
-			return [];
-		}
-
-		$cachedAttempts = json_decode($cachedAttempts, true);
-		if (\is_array($cachedAttempts)) {
-			return $cachedAttempts;
-		}
-
-		return [];
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function getAttempts(string $methodIdentifier,
-								string $userIdentifier,
-								int $seconds): int {
-		$identifier = $this->hash($methodIdentifier, $userIdentifier);
-		$existingAttempts = $this->getExistingAttempts($identifier);
-
-		$count = 0;
-		$currentTime = $this->timeFactory->getTime();
-		/** @var array $existingAttempts */
-		foreach ($existingAttempts as $attempt) {
-			if (($attempt + $seconds) > $currentTime) {
-				$count++;
-			}
-		}
-
-		return $count;
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function registerAttempt(string $methodIdentifier,
-									string $userIdentifier,
-									int $period) {
-		$identifier = $this->hash($methodIdentifier, $userIdentifier);
-		$existingAttempts = $this->getExistingAttempts($identifier);
-		$currentTime = $this->timeFactory->getTime();
-
-		// Unset all attempts older than $period
-		foreach ($existingAttempts as $key => $attempt) {
-			if (($attempt + $period) < $currentTime) {
-				unset($existingAttempts[$key]);
-			}
-		}
-		$existingAttempts = array_values($existingAttempts);
-
-		// Store the new attempt
-		$existingAttempts[] = (string)$currentTime;
-		$this->cache->set($identifier, json_encode($existingAttempts));
-	}
-}