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luosheng
403
Technosoftware/DaAeHdaClient/OpcUserIdentity.cs
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403
Technosoftware/DaAeHdaClient/OpcUserIdentity.cs
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#region Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
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//-----------------------------------------------------------------------------
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// Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
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// Web: https://www.technosoftware.com
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//
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// The source code in this file is covered under a dual-license scenario:
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// - Owner of a purchased license: SCLA 1.0
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// - GPL V3: everybody else
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//
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// SCLA license terms accompanied with this source code.
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// See SCLA 1.0: https://technosoftware.com/license/Source_Code_License_Agreement.pdf
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//
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// GNU General Public License as published by the Free Software Foundation;
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// version 3 of the License are accompanied with this source code.
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// See https://technosoftware.com/license/GPLv3License.txt
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//
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// This source code is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE.
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//-----------------------------------------------------------------------------
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#endregion Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
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#region Using Directives
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using System;
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using System.Text;
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using System.Security.Cryptography;
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#endregion
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namespace Technosoftware.DaAeHdaClient
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{
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/// <summary>
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/// The user identity to use when connecting to the OPC server.
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/// </summary>
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public class OpcUserIdentity
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{
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///////////////////////////////////////////////////////////////////////
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#region Fields
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private RSAParameters _rsaParams;
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private readonly byte[] _domainName;
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private readonly bool _domainNameValid;
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private readonly bool _usernameValid;
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private readonly byte[] _username;
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private readonly bool _passwordValid;
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private readonly byte[] _password;
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private readonly bool _clientCertificateNameValid;
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private readonly byte[] _clientCertificateName;
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private readonly bool _serverCertificateNameValid;
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private readonly byte[] _serverCertificateName;
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#endregion
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///////////////////////////////////////////////////////////////////////
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#region Constructors, Destructor, Initialization
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/// <summary>
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/// Sets the username and password (extracts the domain from the username if a '\' is present).
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/// </summary>
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/// <param name="username">The user name</param>
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/// <param name="password">The password</param>
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public OpcUserIdentity(string username, string password)
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{
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var ByteConverter = new UnicodeEncoding();
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using (var RSA = new RSACryptoServiceProvider())
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{
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string domainName = null;
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_rsaParams = RSA.ExportParameters(true);
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RSA.ImportParameters(_rsaParams);
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if (!string.IsNullOrEmpty(username))
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{
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var index = username.IndexOf('\\');
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if (index != -1)
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{
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domainName = username.Substring(0, index);
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username = username.Substring(index + 1);
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}
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_usernameValid = true;
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var userIdBytes = ByteConverter.GetBytes(username);
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_username = RSA.Encrypt(userIdBytes, false);
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}
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if (!string.IsNullOrEmpty(password))
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{
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_passwordValid = true;
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var userKeyBytes = ByteConverter.GetBytes(password);
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_password = RSA.Encrypt(userKeyBytes, false);
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}
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if (!string.IsNullOrEmpty(domainName))
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{
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_domainNameValid = true;
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var domainBytes = ByteConverter.GetBytes(domainName);
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_domainName = RSA.Encrypt(domainBytes, false);
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}
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}
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}
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/// <summary>
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/// Sets the username and password.
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/// </summary>
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/// <param name="domainName">The windows domain name</param>
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/// <param name="userName">The user name</param>
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/// <param name="password">The password</param>
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public OpcUserIdentity(string domainName, string userName, string password)
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: this(userName, password)
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{
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var ByteConverter = new UnicodeEncoding();
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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if (!string.IsNullOrEmpty(domainName))
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{
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_domainNameValid = true;
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var domainBytes = ByteConverter.GetBytes(domainName);
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_domainName = RSA.Encrypt(domainBytes, false);
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}
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}
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}
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/// <summary>
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/// Sets the username and password.
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/// </summary>
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/// <param name="domainName">The windows domain name</param>
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/// <param name="userName">The user name</param>
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/// <param name="password">The password</param>
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/// <param name="clientCertificateName">The Client Certificate name</param>
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/// <param name="serverCertificateName">The Server Certificate name</param>
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public OpcUserIdentity(string domainName, string userName, string password, string clientCertificateName, string serverCertificateName)
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: this(domainName, userName, password)
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{
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var ByteConverter = new UnicodeEncoding();
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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if (!string.IsNullOrEmpty(clientCertificateName))
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{
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_clientCertificateNameValid = true;
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var clientCertificateBytes = ByteConverter.GetBytes(clientCertificateName);
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_clientCertificateName = RSA.Encrypt(clientCertificateBytes, false);
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}
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if (!string.IsNullOrEmpty(serverCertificateName))
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{
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_serverCertificateNameValid = true;
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var serverCertificateBytes = ByteConverter.GetBytes(serverCertificateName);
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_serverCertificateName = RSA.Encrypt(serverCertificateBytes, false);
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}
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}
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}
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#endregion
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///////////////////////////////////////////////////////////////////////
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#region Properties
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/// <summary>
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/// The windows domain name.
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/// </summary>
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public string Domain
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{
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get
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{
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if (_domainNameValid)
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{
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try
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{
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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var domainNameBytes = RSA.Decrypt(_domainName, false);
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var ByteConverter = new UnicodeEncoding();
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return ByteConverter.GetString(domainNameBytes);
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}
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}
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catch (Exception)
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{
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throw new OpcResultException(OpcResult.E_FAIL, "The user info object has been corrupted.");
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}
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}
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return null;
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}
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}
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/// <summary>
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/// The user name.
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/// </summary>
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public string Username
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{
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get
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{
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if (_usernameValid)
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{
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try
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{
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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var userNameBytes = RSA.Decrypt(_username, false);
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var ByteConverter = new UnicodeEncoding();
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return ByteConverter.GetString(userNameBytes);
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}
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}
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catch (Exception)
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{
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throw new OpcResultException(OpcResult.E_FAIL, "The user info object has been corrupted.");
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}
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}
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return null;
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}
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}
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/// <summary>
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/// The password.
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/// </summary>
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public string Password
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{
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get
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{
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if (_passwordValid)
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{
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try
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{
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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var passwordBytes = RSA.Decrypt(_password, false);
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var ByteConverter = new UnicodeEncoding();
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return ByteConverter.GetString(passwordBytes);
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}
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}
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catch (Exception)
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{
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throw new OpcResultException(OpcResult.E_FAIL, "The user info object has been corrupted.");
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}
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}
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return null;
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}
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}
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/// <summary>
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/// Gets or sets a license key to use when activating the server.
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/// </summary>
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public string LicenseKey { get; set; }
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/// <summary>
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/// The Client Certificate name for certificate mode authentication of the server access.
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/// </summary>
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public string ClientCertificateName
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{
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get
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{
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if (_clientCertificateNameValid)
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{
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try
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{
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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var clientCertificateBytes = RSA.Decrypt(_clientCertificateName, false);
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var ByteConverter = new UnicodeEncoding();
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return ByteConverter.GetString(clientCertificateBytes);
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}
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}
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catch (Exception)
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{
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throw new OpcResultException(OpcResult.E_FAIL, "The user info object has been corrupted.");
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}
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}
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return null;
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}
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}
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/// <summary>
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/// The Server Certificate name for certificate mode authentication of the server access.
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/// </summary>
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public string ServerCertificateName
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{
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get
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{
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if (_serverCertificateNameValid)
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{
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try
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{
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using (var RSA = new RSACryptoServiceProvider())
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{
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RSA.ImportParameters(_rsaParams);
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var serverCertificateBytes = RSA.Decrypt(_serverCertificateName, false);
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var ByteConverter = new UnicodeEncoding();
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return ByteConverter.GetString(serverCertificateBytes);
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}
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}
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catch (Exception)
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{
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throw new OpcResultException(OpcResult.E_FAIL, "The user info object has been corrupted.");
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}
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}
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return null;
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}
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}
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#endregion
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///////////////////////////////////////////////////////////////////////
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#region Public Methods
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/// <summary>
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/// Whether the identity represents an the default identity.
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/// </summary>
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public static bool IsDefault(OpcUserIdentity identity)
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{
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if (identity != null)
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{
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return (!identity._usernameValid);
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}
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return true;
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}
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#endregion
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///////////////////////////////////////////////////////////////////////
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#region Public Methods (Comparison Operators)
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/// <summary>
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/// Determines if the object is equal to the specified value.
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/// </summary>
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/// <param name="target">The OpcUserIdentity to compare with</param>
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/// <returns>True if the objects are equal; otherwise false.</returns>
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public override bool Equals(object target)
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{
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object identity = target as OpcUserIdentity;
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if (identity == null)
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{
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return false;
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}
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return false;
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}
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/// <summary>
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/// Converts the object to a string used for display.
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/// </summary>
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public override string ToString()
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{
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if (_domainNameValid)
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{
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return string.Format("{0}\\{1}", Domain, Username);
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}
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return Username;
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}
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/// <summary>
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/// Returns a suitable hash code for the result.
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/// </summary>
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public override int GetHashCode()
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{
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if (_usernameValid)
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{
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return Username.GetHashCode();
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}
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return 0;
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}
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/// <summary>
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/// Returns true if the objects are equal.
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/// </summary>
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/// <param name="a">The first OpcUserIdentity to compare.</param>
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/// <param name="b">The second OpcUserIdentity to compare.</param>
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/// <returns>True if the objects are equal; otherwise false.</returns>
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public static bool operator ==(OpcUserIdentity a, OpcUserIdentity b)
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{
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if (ReferenceEquals(a, null))
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{
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return ReferenceEquals(b, null);
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}
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return a.Equals(b);
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}
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/// <summary>
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/// Returns true if the objects are not equal.
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/// </summary>
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/// <param name="a">The first OpcUserIdentity to compare.</param>
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/// <param name="b">The second OpcUserIdentity to compare.</param>
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/// <returns>True if the objects are not equal; otherwise false.</returns>
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public static bool operator !=(OpcUserIdentity a, OpcUserIdentity b)
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{
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if (ReferenceEquals(a, null))
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{
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return !ReferenceEquals(b, null);
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}
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return !a.Equals(b);
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}
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#endregion
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}
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}
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