108 lines
3.6 KiB
C#
108 lines
3.6 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Web.Core;
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[Scope]
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public class BruteForceLoginManager
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{
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private readonly LoginSettings _settings;
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private readonly ICache _cache;
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private string _login;
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private string _requestIp;
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public BruteForceLoginManager(SettingsManager settingsManager, ICache cache)
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{
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_settings = settingsManager.Load<LoginSettings>();
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_cache = cache;
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}
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public void Init(string login, string requestIp)
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{
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_login = login;
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_requestIp = requestIp;
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}
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private string GetBlockCacheKey()
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{
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return "loginblock/" + _login + _requestIp;
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}
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private string GetHistoryCacheKey()
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{
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return "loginsec/" + _login + _requestIp;
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}
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public bool Increment(out bool showRecaptcha)
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{
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showRecaptcha = true;
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var blockCacheKey = GetBlockCacheKey();
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if (_cache.Get<string>(blockCacheKey) != null)
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{
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return false;
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}
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var historyCacheKey = GetHistoryCacheKey();
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var history = _cache.Get<List<DateTime>>(historyCacheKey) ?? new List<DateTime>();
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var now = DateTime.UtcNow;
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var checkTime = now.Subtract(TimeSpan.FromSeconds(_settings.CheckPeriod));
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history = history.Where(item => item > checkTime).ToList();
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history.Add(now);
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showRecaptcha = history.Count > _settings.AttemptCount - 1;
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if (history.Count > _settings.AttemptCount)
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{
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_cache.Insert(blockCacheKey, "block", now.Add(TimeSpan.FromSeconds(_settings.BlockTime)));
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_cache.Remove(historyCacheKey);
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return false;
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}
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_cache.Insert(historyCacheKey, history, now.Add(TimeSpan.FromSeconds(_settings.CheckPeriod)));
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return true;
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}
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public void Decrement()
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{
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var historyCacheKey = GetHistoryCacheKey();
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var history = _cache.Get<List<DateTime>>(historyCacheKey) ?? new List<DateTime>();
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if (history.Count > 0)
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{
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history.RemoveAt(history.Count - 1);
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}
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_cache.Insert(historyCacheKey, history, DateTime.UtcNow.Add(TimeSpan.FromSeconds(_settings.CheckPeriod)));
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}
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}
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