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Как Вы получаете список зарегистрированных/подключенных пользователей в.NET?

25
задан John Saunders 28 March 2010 в 20:59
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4 ответа

Вот мое взятие по проблеме: 

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace EnumerateRDUsers
{
  class Program
  {
    [DllImport("wtsapi32.dll")]
    static extern IntPtr WTSOpenServer([MarshalAs(UnmanagedType.LPStr)] String pServerName);

    [DllImport("wtsapi32.dll")]
    static extern void WTSCloseServer(IntPtr hServer);

    [DllImport("wtsapi32.dll")]
    static extern Int32 WTSEnumerateSessions(
        IntPtr hServer,
        [MarshalAs(UnmanagedType.U4)] Int32 Reserved,
        [MarshalAs(UnmanagedType.U4)] Int32 Version,
        ref IntPtr ppSessionInfo,
        [MarshalAs(UnmanagedType.U4)] ref Int32 pCount);

    [DllImport("wtsapi32.dll")]
    static extern void WTSFreeMemory(IntPtr pMemory);

    [DllImport("Wtsapi32.dll")]
    static extern bool WTSQuerySessionInformation(
        System.IntPtr hServer, int sessionId, WTS_INFO_CLASS wtsInfoClass, out System.IntPtr ppBuffer, out uint pBytesReturned);

    [StructLayout(LayoutKind.Sequential)]
    private struct WTS_SESSION_INFO
    {
      public Int32 SessionID;

      [MarshalAs(UnmanagedType.LPStr)]
      public String pWinStationName;

      public WTS_CONNECTSTATE_CLASS State;
    }

    public enum WTS_INFO_CLASS
    {
      WTSInitialProgram,
      WTSApplicationName,
      WTSWorkingDirectory,
      WTSOEMId,
      WTSSessionId,
      WTSUserName,
      WTSWinStationName,
      WTSDomainName,
      WTSConnectState,
      WTSClientBuildNumber,
      WTSClientName,
      WTSClientDirectory,
      WTSClientProductId,
      WTSClientHardwareId,
      WTSClientAddress,
      WTSClientDisplay,
      WTSClientProtocolType
    }
    public enum WTS_CONNECTSTATE_CLASS
    {
      WTSActive,
      WTSConnected,
      WTSConnectQuery,
      WTSShadow,
      WTSDisconnected,
      WTSIdle,
      WTSListen,
      WTSReset,
      WTSDown,
      WTSInit
    }

    static void Main(string[] args)
    {
      ListUsers(Environment.MachineName);
    }

    public static IntPtr OpenServer(String Name)
    {
      IntPtr server = WTSOpenServer(Name);
      return server;
    }
    public static void CloseServer(IntPtr ServerHandle)
    {
      WTSCloseServer(ServerHandle);
    }
    public static void ListUsers(String ServerName)
    {
      IntPtr serverHandle = IntPtr.Zero;
      List<String> resultList = new List<string>();
      serverHandle = OpenServer(ServerName);

      try
      {
        IntPtr SessionInfoPtr = IntPtr.Zero;
        IntPtr userPtr = IntPtr.Zero;
        IntPtr domainPtr = IntPtr.Zero;
        Int32 sessionCount = 0;
        Int32 retVal = WTSEnumerateSessions(serverHandle, 0, 1, ref SessionInfoPtr, ref sessionCount);
        Int32 dataSize = Marshal.SizeOf(typeof(WTS_SESSION_INFO));
        IntPtr currentSession = SessionInfoPtr;
        uint bytes = 0;

        if (retVal != 0)
        {
          for (int i = 0; i < sessionCount; i++)
          {
            WTS_SESSION_INFO si = (WTS_SESSION_INFO)Marshal.PtrToStructure((System.IntPtr)currentSession, typeof(WTS_SESSION_INFO));
            currentSession += dataSize;

            WTSQuerySessionInformation(serverHandle, si.SessionID, WTS_INFO_CLASS.WTSUserName, out userPtr, out bytes);
            WTSQuerySessionInformation(serverHandle, si.SessionID, WTS_INFO_CLASS.WTSDomainName, out domainPtr, out bytes);

            Console.WriteLine("Domain and User: " + Marshal.PtrToStringAnsi(domainPtr) + "\\" + Marshal.PtrToStringAnsi(userPtr));

            WTSFreeMemory(userPtr); 
            WTSFreeMemory(domainPtr);
          }

          WTSFreeMemory(SessionInfoPtr);
        }
      }
      finally
      {
        CloseServer(serverHandle);
      }

    }

  }
}
31
ответ дан M.R.T2017 28 November 2019 в 20:36
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Хорошо, одно решение моего собственного вопроса.

можно использовать WMI для получения списка выполнения процессов. Можно также посмотреть на владельцев этих процессов. Если Вы смотрите на владельцев "explorer.exe" (и удаляете дубликаты), необходимо закончить со списком зарегистрированных пользователей.

5
ответ дан James 28 November 2019 в 20:36
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using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace TerminalServices
{
    class TSManager
    {
    [DllImport("wtsapi32.dll")]
    static extern IntPtr WTSOpenServer([MarshalAs(UnmanagedType.LPStr)] String pServerName);

    [DllImport("wtsapi32.dll")]
    static extern void WTSCloseServer(IntPtr hServer);

    [DllImport("wtsapi32.dll")]
    static extern Int32 WTSEnumerateSessions(
        IntPtr hServer, 
        [MarshalAs(UnmanagedType.U4)] Int32 Reserved,
        [MarshalAs(UnmanagedType.U4)] Int32 Version, 
        ref IntPtr ppSessionInfo,
        [MarshalAs(UnmanagedType.U4)] ref Int32 pCount);

    [DllImport("wtsapi32.dll")]
    static extern void WTSFreeMemory(IntPtr pMemory);

    [StructLayout(LayoutKind.Sequential)]
    private struct WTS_SESSION_INFO
    {
        public Int32 SessionID;

        [MarshalAs(UnmanagedType.LPStr)]
        public String pWinStationName;

        public WTS_CONNECTSTATE_CLASS State;
    }

    public enum WTS_CONNECTSTATE_CLASS
    {
        WTSActive,
        WTSConnected,
        WTSConnectQuery,
        WTSShadow,
        WTSDisconnected,
        WTSIdle,
        WTSListen,
        WTSReset,
        WTSDown,
        WTSInit
    } 

    public static IntPtr OpenServer(String Name)
    {
        IntPtr server = WTSOpenServer(Name);
        return server;
    }
    public static void CloseServer(IntPtr ServerHandle)
    {
        WTSCloseServer(ServerHandle);
    }
    public static List<String> ListSessions(String ServerName)
    {
        IntPtr server = IntPtr.Zero;
        List<String> ret = new List<string>();
        server = OpenServer(ServerName);

        try
        {
        IntPtr ppSessionInfo = IntPtr.Zero;

        Int32 count = 0;
        Int32 retval = WTSEnumerateSessions(server, 0, 1, ref ppSessionInfo, ref count);
        Int32 dataSize = Marshal.SizeOf(typeof(WTS_SESSION_INFO));

        Int32 current = (int)ppSessionInfo;

        if (retval != 0)
        {
            for (int i = 0; i < count; i++)
            {
            WTS_SESSION_INFO si = (WTS_SESSION_INFO)Marshal.PtrToStructure((System.IntPtr)current, typeof(WTS_SESSION_INFO));
            current += dataSize;

            ret.Add(si.SessionID + " " + si.State + " " + si.pWinStationName);
            }

            WTSFreeMemory(ppSessionInfo);
        }
        }
        finally
        {
        CloseServer(server);
        }

        return ret;
    }
    }
}
1
ответ дан Nescio 28 November 2019 в 20:36
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Another option, if you don't want to deal with the P/Invokes yourself, would be to use the Cassia library:

using System;
using System.Security.Principal;
using Cassia;

namespace CassiaSample
{
    public static class Program
    {
        public static void Main(string[] args)
        {
            ITerminalServicesManager manager = new TerminalServicesManager();
            using (ITerminalServer server = manager.GetRemoteServer("your-server-name"))
            {
                server.Open();
                foreach (ITerminalServicesSession session in server.GetSessions())
                {
                    NTAccount account = session.UserAccount;
                    if (account != null)
                    {
                        Console.WriteLine(account);
                    }
                }
            }
        }
    }
}
19
ответ дан 28 November 2019 в 20:36
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