194 lines
5.9 KiB
C#
194 lines
5.9 KiB
C#
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/*
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*
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* (c) Copyright Ascensio System Limited 2010-2020
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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using System;
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using System.Security.Cryptography;
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using ASC.Common;
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using ASC.Common.Caching;
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using ASC.Core;
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namespace ASC.Data.Storage.Encryption
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{
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public class EncryptionSettings
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{
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internal string password;
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public string Password
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{
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get { return password; }
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set { password = (value ?? string.Empty).Replace('#', '_'); }
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}
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public EncryprtionStatus Status { get; set; }
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public bool NotifyUsers { get; set; }
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public EncryptionSettings(EncryptionSettingsProto encryptionSettingsProto)
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{
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Password = encryptionSettingsProto.Password;
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Status = encryptionSettingsProto.Status;
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NotifyUsers = encryptionSettingsProto.NotifyUsers;
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}
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public EncryptionSettings()
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{
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Password = string.Empty;
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Status = EncryprtionStatus.Decrypted;
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NotifyUsers = true;
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}
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}
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public class EncryptionSettingsHelper
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{
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private const string key = "EncryptionSettings";
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private CoreConfiguration CoreConfiguration { get; }
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private AscCacheNotify AscCacheNotify { get; }
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public EncryptionSettingsHelper(CoreConfiguration coreConfiguration, AscCacheNotify ascCacheNotify)
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{
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CoreConfiguration = coreConfiguration;
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AscCacheNotify = ascCacheNotify;
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}
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public void Save(EncryptionSettings encryptionSettings)
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{
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var settings = Serialize(encryptionSettings);
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CoreConfiguration.SaveSetting(key, settings);
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AscCacheNotify.ClearCache();
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}
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public EncryptionSettings Load()
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{
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var settings = CoreConfiguration.GetSetting(key);
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return Deserialize(settings);
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}
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public string Serialize(EncryptionSettings encryptionSettings)
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{
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return string.Join("#",
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string.IsNullOrEmpty(encryptionSettings.password) ? string.Empty : Crypto.GetV(encryptionSettings.password, 1, true),
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(int)encryptionSettings.Status,
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encryptionSettings.NotifyUsers
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);
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}
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public EncryptionSettings Deserialize(string value)
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{
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if (string.IsNullOrEmpty(value))
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{
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return new EncryptionSettings();
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}
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var parts = value.Split(new[] { '#' }, StringSplitOptions.None);
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var password = string.IsNullOrEmpty(parts[0]) ? string.Empty : Crypto.GetV(parts[0], 1, false);
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var status = int.Parse(parts[1]);
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var notifyUsers = bool.Parse(parts[2]);
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return new EncryptionSettings
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{
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Password = password,
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Status = (EncryprtionStatus)status,
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NotifyUsers = notifyUsers
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};
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}
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// source System.Web.Security.Membership.GeneratePassword
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public string GeneratePassword(int length, int numberOfNonAlphanumericCharacters)
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{
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var punctuations = "!@#$%^&*()_-+=[{]};:>|./?".ToCharArray();
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if (length < 1 || length > 128)
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{
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throw new ArgumentException("password_length_incorrect", "length");
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}
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if (numberOfNonAlphanumericCharacters > length || numberOfNonAlphanumericCharacters < 0)
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{
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throw new ArgumentException("min_required_non_alphanumeric_characters_incorrect", "numberOfNonAlphanumericCharacters");
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}
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byte[] array = new byte[length];
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char[] array2 = new char[length];
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int num = 0;
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using (var rng = new RNGCryptoServiceProvider())
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{
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rng.GetBytes(array);
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}
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for (int i = 0; i < length; i++)
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{
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int num2 = (int)array[i] % 87;
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if (num2 < 10)
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{
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array2[i] = (char)(48 + num2);
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continue;
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}
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if (num2 < 36)
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{
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array2[i] = (char)(65 + num2 - 10);
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continue;
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}
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if (num2 < 62)
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{
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array2[i] = (char)(97 + num2 - 36);
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continue;
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}
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array2[i] = punctuations[num2 - 62];
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num++;
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}
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if (num < numberOfNonAlphanumericCharacters)
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{
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Random random = new Random();
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for (int j = 0; j < numberOfNonAlphanumericCharacters - num; j++)
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{
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int num3;
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do
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{
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num3 = random.Next(0, length);
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}
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while (!char.IsLetterOrDigit(array2[num3]));
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array2[num3] = punctuations[random.Next(0, punctuations.Length)];
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}
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}
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return new string(array2);
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}
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}
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public static class EncryptionSettingsHelperExtension
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{
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public static DIHelper AddEncryptionSettingsHelperService(this DIHelper services)
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{
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services.TryAddScoped<EncryptionSettingsHelper>();
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services.TryAddScoped<AscCacheNotify>();
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return services
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.AddCoreConfigurationService();
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}
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}
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}
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