125 lines
4.5 KiB
C#
125 lines
4.5 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.Geolocation;
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[Scope]
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public class GeolocationHelper
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{
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private readonly IDbContextFactory<CustomDbContext> _dbContextFactory;
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private readonly ILogger<GeolocationHelper> _logger;
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private readonly IHttpContextAccessor _httpContextAccessor;
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public GeolocationHelper(
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IDbContextFactory<CustomDbContext> dbContextFactory,
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ILogger<GeolocationHelper> logger,
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IHttpContextAccessor httpContextAccessor)
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{
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_dbContextFactory = dbContextFactory;
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_logger = logger;
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_httpContextAccessor = httpContextAccessor;
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}
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public IPGeolocationInfo GetIPGeolocation(string ip)
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{
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try
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{
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using var dbContext = _dbContextFactory.CreateDbContext();
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var ipformatted = FormatIP(ip);
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var q = dbContext.DbipLocation
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.Where(r => r.IPStart.CompareTo(ipformatted) <= 0)
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.Where(r => ipformatted.CompareTo(r.IPEnd) <= 0)
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.OrderByDescending(r => r.IPStart)
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.Select(r => new IPGeolocationInfo
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{
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City = r.City,
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IPEnd = r.IPEnd,
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IPStart = r.IPStart,
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Key = r.Country,
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TimezoneOffset = r.TimezoneOffset ?? 0,
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TimezoneName = r.TimezoneName
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})
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.FirstOrDefault();
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return q ?? IPGeolocationInfo.Default;
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}
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catch (Exception error)
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{
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_logger.ErrorGetIPGeolocation(error);
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}
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return IPGeolocationInfo.Default;
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}
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public IPGeolocationInfo GetIPGeolocationFromHttpContext()
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{
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if (_httpContextAccessor.HttpContext?.Request != null)
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{
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var ip = (string)(_httpContextAccessor.HttpContext.Items["X-Forwarded-For"] ?? _httpContextAccessor.HttpContext.Items["REMOTE_ADDR"]);
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if (!string.IsNullOrWhiteSpace(ip))
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{
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return GetIPGeolocation(ip);
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}
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}
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return IPGeolocationInfo.Default;
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}
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private static string FormatIP(string ip)
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{
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ip = (ip ?? "").Trim();
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if (ip.Contains('.'))
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{
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//ip v4
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if (ip.Length == 15)
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{
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return ip;
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}
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return string.Join(".", ip.Split(':')[0].Split('.').Select(s => ("00" + s).Substring(s.Length - 1)).ToArray());
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}
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else if (ip.Contains(':'))
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{
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//ip v6
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if (ip.Length == 39)
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{
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return ip;
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}
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var index = ip.IndexOf("::");
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if (0 <= index)
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{
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ip = ip.Insert(index + 2, new string(':', 8 - ip.Split(':').Length));
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}
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return string.Join(":", ip.Split(':').Select(s => ("0000" + s).Substring(s.Length)).ToArray());
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}
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else
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{
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throw new ArgumentException("Unknown ip " + ip);
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}
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}
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}
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