用C#控制计算机重启、关机及注销

最新推荐文章于 2022-12-30 04:09:12 发布

surfinging08

最新推荐文章于 2022-12-30 04:09:12 发布

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文章标签： c# token string query struct class

本文介绍了一个用于在Windows系统中实现重启、关机和注销功能的方法。通过调整进程权限并使用API函数来安全地执行这些操作。

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

namespace chkipsrv
{
     public class Shudown
      {
          [StructLayout(LayoutKind.Sequential, Pack = 1)]
         internal struct TokPriv1Luid
          {
             public int Count;
             public long Luid;
             public int Attr;
          }

          [DllImport( "kernel32.dll", ExactSpelling = true)]
         internal static extern IntPtr GetCurrentProcess();

          [DllImport( "advapi32.dll", ExactSpelling = true, SetLastError = true)]
         internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);

          [DllImport( "advapi32.dll", SetLastError = true)]
         internal static extern bool LookupPrivilegeValue( string host, string name, ref long pluid);

          [DllImport( "advapi32.dll", ExactSpelling = true, SetLastError = true)]
         internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall,
         ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);

          [DllImport( "user32.dll", ExactSpelling = true, SetLastError = true)]
         internal static extern bool ExitWindowsEx( int DoFlag, int rea);

         internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
         internal const int TOKEN_QUERY = 0x00000008;
         internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
         internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
         internal const int EWX_LOGOFF = 0x00000000;
         internal const int EWX_SHUTDOWN = 0x00000001;
         internal const int EWX_REBOOT = 0x00000002;
         internal const int EWX_FORCE = 0x00000004;
         internal const int EWX_POWEROFF = 0x00000008;
         internal const int EWX_FORCEIFHUNG = 0x00000010;

         private static void DoExitWin( int DoFlag)
          {
             bool ok;
              TokPriv1Luid tp;
              IntPtr hproc = GetCurrentProcess();
              IntPtr htok = IntPtr.Zero;
              ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
              tp.Count = 1;
              tp.Luid = 0;
              tp.Attr = SE_PRIVILEGE_ENABLED;
              ok = LookupPrivilegeValue( null, SE_SHUTDOWN_NAME, ref tp.Luid);
              ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
              ok = ExitWindowsEx(DoFlag, 0);
          }

         public static void Reboot()
          {
              DoExitWin(EWX_FORCE | EWX_REBOOT);
          }

         public static void PowerOff()
          {
              DoExitWin(EWX_FORCE | EWX_POWEROFF);
          }

         public static void LogOff()
          {
              DoExitWin(EWX_FORCE | EWX_LOGOFF);
          }
      }
}