// CoreUtil
// 
// Copyright (C) 2012-2014 Daiyuu Nobori. All Rights Reserved.
// Copyright (C) 2012-2014 SoftEther VPN Project at University of Tsukuba. All Rights Reserved.
// Comments: Tetsuo Sugiyama, Ph.D.
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// version 2 as published by the Free Software Foundation.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License version 2
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// 
// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
// 
// 
// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
// 
// USE ONLY IN JAPAN. DO NOT USE IT IN OTHER COUNTRIES. IMPORTING THIS
// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
// COUNTRIES MIGHT BE RESTRICTED.
// 
// 
// SOURCE CODE CONTRIBUTION
// ------------------------
// 
// Your contribution to SoftEther VPN Project is much appreciated.
// Please send patches to us through GitHub.
// Read the SoftEther VPN Patch Acceptance Policy in advance:
// http://www.softether.org/5-download/src/9.patch
// 
// 
// DEAR SECURITY EXPERTS
// ---------------------
// 
// If you find a bug or a security vulnerability please kindly inform us
// about the problem immediately so that we can fix the security problem
// to protect a lot of users around the world as soon as possible.
// 
// Our e-mail address for security reports is:
// softether-vpn-security [at] softether.org
// 
// Please note that the above e-mail address is not a technical support
// inquiry address. If you need technical assistance, please visit
// http://www.softether.org/ and ask your question on the users forum.
// 
// Thank you for your cooperation.
// 
// 
// NO MEMORY OR RESOURCE LEAKS
// ---------------------------
// 
// The memory-leaks and resource-leaks verification under the stress
// test has been passed before release this source code.


using System;
using System.Threading;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.Text;
using System.Configuration;
using System.Collections;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.Web.Mail;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Xml.Serialization;
using System.DirectoryServices;
using CoreUtil;
using CoreUtil.Internal;

namespace CoreUtil
{
	public static class Win32
	{
		static Win32()
		{
		}

		public static void CreateUser(string machineName, string userName, string password, string description)
		{
			Str.NormalizeString(ref userName);
			Str.NormalizeString(ref password);
			Str.NormalizeString(ref description);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry newUser = sam.Children.Add(userName, "user"))
				{
					newUser.Invoke("SetPassword", new object[] { password });
					newUser.Invoke("Put", new object[] { "Description", description });
					newUser.CommitChanges();
					Console.WriteLine(newUser.Path);
				}
			}

			try
			{
				AddUserToGroup(machineName, userName, "Users");
			}
			catch
			{
			}
		}

		public static void ChangeUserPassword(string machineName, string userName, string oldPassword, string newPassword)
		{
			Str.NormalizeString(ref userName);
			Str.NormalizeString(ref oldPassword);
			Str.NormalizeString(ref newPassword);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry user = sam.Children.Find(userName, "user"))
				{
					user.Invoke("ChangePassword", oldPassword, newPassword);
				}
			}
		}

		public static void SetUserPassword(string machineName, string userName, string password)
		{
			Str.NormalizeString(ref userName);
			Str.NormalizeString(ref password);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry user = sam.Children.Find(userName, "user"))
				{
					user.Invoke("SetPassword", password);
				}
			}
		}

		public static string[] GetMembersOfGroup(string machineName, string groupName)
		{
			List<string> ret = new List<string>();

			Str.NormalizeString(ref groupName);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry g = sam.Children.Find(groupName, "group"))
				{
					object members = g.Invoke("Members", null);

					foreach (object member in (IEnumerable)members)
					{
						using (DirectoryEntry e = new DirectoryEntry(member))
						{
							ret.Add(e.Name);
						}
					}

					return ret.ToArray();
				}
			}
		}

		public static bool IsUserMemberOfGroup(string machineName, string userName, string groupName)
		{
			Str.NormalizeString(ref userName);
			Str.NormalizeString(ref groupName);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry g = sam.Children.Find(groupName, "group"))
				{
					using (DirectoryEntry u = sam.Children.Find(userName, "user"))
					{
						return (bool)g.Invoke("IsMember", u.Path);
					}
				}
			}
		}

		public static void DeleteUserFromGroup(string machineName, string userName, string groupName)
		{
			Str.NormalizeString(ref userName);
			Str.NormalizeString(ref groupName);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry g = sam.Children.Find(groupName, "group"))
				{
					using (DirectoryEntry u = sam.Children.Find(userName, "user"))
					{
						g.Invoke("Remove", u.Path);
					}
				}
			}
		}

		public static void AddUserToGroup(string machineName, string userName, string groupName)
		{
			Str.NormalizeString(ref userName);
			Str.NormalizeString(ref groupName);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry g = sam.Children.Find(groupName, "group"))
				{
					using (DirectoryEntry u = sam.Children.Find(userName, "user"))
					{
						g.Invoke("Add", u.Path);
					}
				}
			}
		}

		public static void DeleteUser(string machineName, string userName)
		{
			Str.NormalizeString(ref userName);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				using (DirectoryEntry u = sam.Children.Find(userName, "user"))
				{
					sam.Children.Remove(u);
				}
			}
		}

		public static bool IsUserExists(string machineName, string userName)
		{
			Str.NormalizeString(ref userName);

			using (DirectoryEntry sam = OpenSam(machineName))
			{
				try
				{
					using (DirectoryEntry user = sam.Children.Find(userName, "user"))
					{
						if (user == null)
						{
							return false;
						}

						return true;
					}
				}
				catch (COMException ce)
				{
					if ((uint)ce.ErrorCode == 0x800708AD)
					{
						return false;
					}
					else
					{
						throw;
					}
				}
			}
		}

		public static DirectoryEntry OpenSam()
		{
			return OpenSam(null);
		}
		public static DirectoryEntry OpenSam(string machineName)
		{
			if (Str.IsEmptyStr(machineName))
			{
				machineName = Env.MachineName;
			}

			return new DirectoryEntry(string.Format("WinNT://{0},computer",
				machineName));
		}
	}
}

// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
// Department of Computer Science has dozens of overly-enthusiastic geeks.
// Join us: http://www.tsukuba.ac.jp/english/admission/
