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caff1023ea
To continue this formatting madness, here's a tiny patch that adds unified formatting for control structures like if and loops as well as classes, their methods and anonymous functions. This basically forces the constructs to start on the same line. This is not exactly what PSR2 wants, but I think we can have a few exceptions with "our" style. The starting of braces on the same line is pracrically standard for our code. This also removes and empty lines from method/function bodies at the beginning and end. Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
128 lines
3.4 KiB
PHP
128 lines
3.4 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2017 Lukas Reschke <lukas@statuscode.ch>
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*
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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\Backend;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\ICache;
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use OCP\ICacheFactory;
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/**
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* Class MemoryCache uses the configured distributed memory cache for storing
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* rate limiting data.
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*
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* @package OC\Security\RateLimiting\Backend
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*/
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class MemoryCache implements IBackend {
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/** @var ICache */
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private $cache;
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/** @var ITimeFactory */
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private $timeFactory;
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/**
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* @param ICacheFactory $cacheFactory
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* @param ITimeFactory $timeFactory
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*/
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public function __construct(ICacheFactory $cacheFactory,
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ITimeFactory $timeFactory) {
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$this->cache = $cacheFactory->createDistributed(__CLASS__);
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$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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* @return string
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*/
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private function hash(string $methodIdentifier,
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string $userIdentifier): string {
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return hash('sha512', $methodIdentifier . $userIdentifier);
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}
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/**
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* @param string $identifier
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* @return array
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*/
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private function getExistingAttempts(string $identifier): array {
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$cachedAttempts = $this->cache->get($identifier);
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if ($cachedAttempts === null) {
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return [];
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}
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$cachedAttempts = json_decode($cachedAttempts, true);
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if (\is_array($cachedAttempts)) {
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return $cachedAttempts;
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}
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return [];
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}
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/**
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* {@inheritDoc}
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*/
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public function getAttempts(string $methodIdentifier,
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string $userIdentifier,
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int $seconds): int {
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$identifier = $this->hash($methodIdentifier, $userIdentifier);
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$existingAttempts = $this->getExistingAttempts($identifier);
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$count = 0;
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$currentTime = $this->timeFactory->getTime();
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/** @var array $existingAttempts */
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foreach ($existingAttempts as $attempt) {
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if (($attempt + $seconds) > $currentTime) {
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$count++;
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}
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}
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return $count;
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}
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/**
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* {@inheritDoc}
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*/
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public function registerAttempt(string $methodIdentifier,
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string $userIdentifier,
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int $period) {
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$identifier = $this->hash($methodIdentifier, $userIdentifier);
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$existingAttempts = $this->getExistingAttempts($identifier);
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$currentTime = $this->timeFactory->getTime();
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// Unset all attempts older than $period
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foreach ($existingAttempts as $key => $attempt) {
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if (($attempt + $period) < $currentTime) {
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unset($existingAttempts[$key]);
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}
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}
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$existingAttempts = array_values($existingAttempts);
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// Store the new attempt
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$existingAttempts[] = (string)$currentTime;
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$this->cache->set($identifier, json_encode($existingAttempts));
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}
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}
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