Developing Next Generation Smart Clients using .NET 2.0 working with Existing .NET 1.1 SOA-based XML Web Services

#region Using directives

using System;
using System.Collections.Generic;
using System.Text;
using SmartInstitute.Automation.Commands.Framework;
using SmartInstitute.Client.Automation.Factories;
using System.Web.Services.Protocols;
using SmartInstitute.Client.Automation.Helpers;
using SmartInstitute;
using SmartInstitute.Automation.SmartInstituteServices.SecurityService;
using SmartInstitute.ObjectModel;
using System.Security.Cryptography;

#endregion

namespace SmartInstitute.Client.Automation.Commands.Security
{
	public class AuthenticateCommand : ICommand	
	{
		private string _UserName;

		public string UserName
		{
			get { return _UserName; }
			set { _UserName = value; }
		}

		private string _Password;

		public string Password
		{
			get { return _Password; }
			set { _Password = value; }
		}

		private bool _IsSuccess;

		public bool IsSuccess
		{
			get { return _IsSuccess; }
			set { _IsSuccess = value; }
		}

		private string _ErrorMessage;

		public string ErrorMessage
		{
			get { return _ErrorMessage; }
			set { _ErrorMessage = value; }
		}

		public AuthenticateCommand( string userName, string password )
		{
			this._UserName = userName;
			this._Password = password;
		}

		void ICommand.Execute()
		{
			UserInfo user = _Application.Settings.UserInfo;
			user.UserName = this._UserName;
			string passwordHash = HashStringMD5(this._Password);
			user.UserPassword = passwordHash;

			using (SecurityService service = ServiceProxyFactory.GetSecurityService())
			{
				user.SecurityKey = service.AuthenticateUser();

				if (null != user.SecurityKey && user.SecurityKey.Length > 0)
				{
					this._IsSuccess = true;
				}
			}
		}

		private string HashStringMD5(string textToHash)
		{
			MD5CryptoServiceProvider MD5 = new MD5CryptoServiceProvider();
			byte[] byteValue = System.Text.Encoding.UTF8.GetBytes(textToHash);
			byte[] byteHash = MD5.ComputeHash(byteValue);
			MD5.Clear();

			return Convert.ToBase64String(byteHash);

		}
	}
}