2022-03-15 18:00:53 +00:00
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// (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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2022-02-15 11:52:43 +00:00
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namespace ASC.Security.Cryptography;
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[Scope]
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public class EmailValidationKeyProvider
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2020-10-19 15:53:15 +00:00
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{
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2022-02-15 11:52:43 +00:00
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public enum ValidationResult
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{
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Ok,
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Invalid,
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Expired
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}
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2022-05-13 16:25:28 +00:00
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public TimeSpan ValidEmailKeyInterval { get; }
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public TimeSpan ValidAuthKeyInterval { get; }
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public TimeSpan ValidVisitLinkInterval { get; }
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2019-09-27 10:45:37 +00:00
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2022-02-15 11:52:43 +00:00
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private readonly ILog _logger;
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private static readonly DateTime _from = new DateTime(2010, 01, 01, 0, 0, 0, DateTimeKind.Utc);
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private readonly MachinePseudoKeys _machinePseudoKeys;
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private readonly TenantManager _tenantManager;
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2022-04-14 19:42:15 +00:00
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public EmailValidationKeyProvider(MachinePseudoKeys machinePseudoKeys, TenantManager tenantManager, IConfiguration configuration, ILog logger)
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{
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_machinePseudoKeys = machinePseudoKeys;
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_tenantManager = tenantManager;
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if (!TimeSpan.TryParse(configuration["email:validinterval"], out var validInterval))
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2020-09-15 13:11:05 +00:00
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{
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validInterval = TimeSpan.FromDays(7);
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}
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if (!TimeSpan.TryParse(configuration["auth:validinterval"], out var authValidInterval))
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{
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authValidInterval = TimeSpan.FromHours(1);
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}
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2022-05-13 16:25:28 +00:00
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2022-05-15 20:19:03 +00:00
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ValidVisitLinkInterval = TimeSpan.FromMinutes(15);
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2022-05-05 12:31:04 +00:00
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ValidEmailKeyInterval = validInterval;
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ValidAuthKeyInterval = authValidInterval;
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2022-03-17 10:13:52 +00:00
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_logger = logger;
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2022-02-15 11:52:43 +00:00
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}
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2022-02-25 17:16:00 +00:00
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2022-02-15 11:52:43 +00:00
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public string GetEmailKey(string email)
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{
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return GetEmailKey(_tenantManager.GetCurrentTenant().Id, email);
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}
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2022-02-25 17:16:00 +00:00
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2022-02-15 11:52:43 +00:00
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public string GetEmailKey(int tenantId, string email)
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{
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ArgumentNullOrEmptyException.ThrowIfNullOrEmpty(email);
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2022-02-25 17:16:00 +00:00
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2022-02-15 11:52:43 +00:00
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email = FormatEmail(tenantId, email);
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2022-02-25 17:16:00 +00:00
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2022-02-15 11:52:43 +00:00
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var ms = (long)(DateTime.UtcNow - _from).TotalMilliseconds;
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var hash = GetMashineHashedData(BitConverter.GetBytes(ms), Encoding.ASCII.GetBytes(email));
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return string.Format("{0}.{1}", ms, DoStringFromBytes(hash));
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2020-10-07 10:45:53 +00:00
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}
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2022-02-25 17:16:00 +00:00
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2022-02-15 11:52:43 +00:00
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private string FormatEmail(int tenantId, string email)
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{
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ArgumentNullException.ThrowIfNull(email);
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2020-07-02 14:11:59 +00:00
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2022-02-15 11:52:43 +00:00
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try
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2020-10-07 10:45:53 +00:00
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{
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return string.Format("{0}|{1}|{2}", email.ToLowerInvariant(), tenantId, Encoding.UTF8.GetString(_machinePseudoKeys.GetMachineConstant()));
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2020-07-02 14:11:59 +00:00
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}
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catch (Exception e)
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{
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_logger.Fatal("Failed to format tenant specific email", e);
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2020-09-15 13:11:05 +00:00
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2022-02-15 11:52:43 +00:00
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return email.ToLowerInvariant();
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}
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}
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2022-02-15 11:52:43 +00:00
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public ValidationResult ValidateEmailKey(string email, string key)
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{
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return ValidateEmailKey(email, key, TimeSpan.MaxValue);
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}
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2020-07-02 14:11:59 +00:00
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2022-02-15 11:52:43 +00:00
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public ValidationResult ValidateEmailKey(string email, string key, TimeSpan validInterval)
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{
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var result = ValidateEmailKeyInternal(email, key, validInterval);
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_logger.DebugFormat("validation result: {0}, source: {1} with key: {2} interval: {3} tenant: {4}", result, email, key, validInterval, _tenantManager.GetCurrentTenant().Id);
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return result;
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}
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2019-11-06 15:03:09 +00:00
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2022-02-15 11:52:43 +00:00
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private ValidationResult ValidateEmailKeyInternal(string email, string key, TimeSpan validInterval)
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{
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ArgumentNullOrEmptyException.ThrowIfNullOrEmpty(email);
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ArgumentNullException.ThrowIfNull(key);
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2019-11-06 15:03:09 +00:00
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2022-02-15 11:52:43 +00:00
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email = FormatEmail(_tenantManager.GetCurrentTenant().Id, email);
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var parts = key.Split(new[] { '.' }, StringSplitOptions.RemoveEmptyEntries);
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if (parts.Length != 2)
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{
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return ValidationResult.Invalid;
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}
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2020-07-02 14:11:59 +00:00
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2022-02-15 11:52:43 +00:00
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if (!long.TryParse(parts[0], out var ms))
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{
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return ValidationResult.Invalid;
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}
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2020-07-02 14:11:59 +00:00
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2022-02-15 11:52:43 +00:00
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var hash = GetMashineHashedData(BitConverter.GetBytes(ms), Encoding.ASCII.GetBytes(email));
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var key2 = DoStringFromBytes(hash);
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var key2_good = string.Equals(parts[1], key2, StringComparison.OrdinalIgnoreCase);
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if (!key2_good)
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{
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return ValidationResult.Invalid;
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}
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var ms_current = (long)(DateTime.UtcNow - _from).TotalMilliseconds;
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return validInterval >= TimeSpan.FromMilliseconds(ms_current - ms) ? ValidationResult.Ok : ValidationResult.Expired;
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}
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2020-07-02 14:11:59 +00:00
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2022-02-15 11:52:43 +00:00
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internal static string DoStringFromBytes(byte[] data)
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{
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var str = Convert.ToBase64String(data);
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str = str.Replace("=", "").Replace("+", "").Replace("/", "").Replace("\\", "");
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return str.ToUpperInvariant();
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}
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2020-07-02 14:11:59 +00:00
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2022-02-15 11:52:43 +00:00
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internal static byte[] GetMashineHashedData(byte[] salt, byte[] data)
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{
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var alldata = new byte[salt.Length + data.Length];
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Array.Copy(data, alldata, data.Length);
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Array.Copy(salt, 0, alldata, data.Length, salt.Length);
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return Hasher.Hash(alldata, HashAlg.SHA256);
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}
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}
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2019-11-06 15:03:09 +00:00
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2022-02-15 11:52:43 +00:00
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public class EmailValidationKeyModel
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{
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public string Key { get; set; }
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public EmployeeType? EmplType { get; set; }
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public string Email { get; set; }
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public Guid? UiD { get; set; }
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public ConfirmType? Type { get; set; }
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public int? RoomAccess { get; set; }
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public string RoomId { get; set; }
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2022-05-13 16:25:28 +00:00
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public void Deconstruct(out string key, out EmployeeType? emplType, out string email, out Guid? uiD, out ConfirmType? type, out int? fileShare, out string roomId)
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{
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2022-05-15 20:19:03 +00:00
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(key, emplType, email, uiD, type, fileShare, roomId) = (Key, EmplType, Email, UiD, Type, RoomAccess, RoomId);
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2022-02-15 11:52:43 +00:00
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}
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2022-05-13 16:25:28 +00:00
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}
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