【转】【C#】Windows服务运行exe程序
在“Windows服务”中，上述代码还是可以运行exe程序的，但是我们看不到。在“控制台应用程序”中，我们可以看到被执行的exe程序，但是到了“Windows服务”中，该exe变成了后台执行，无法与用户进行交互。
原因如下：
默认情况下，服务是运行在session0下的，与普通的应用程序不在一个session，所以不能互动，但是我们可以利用函数“CreateProcessAsUser”来创建应用程序session下的进程，从而调用外部exe。
Windows服务（C#）显式运行外部exe程序源代码如下：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Security; using System.Diagnostics; using System.Runtime.InteropServices; namespace SngjIPS_WindowsService { class UserProcess { #region Structures [StructLayout(LayoutKind.Sequential)] public struct SECURITY_ATTRIBUTES { public int Length; public IntPtr lpSecurityDescriptor; public bool bInheritHandle; } [StructLayout(LayoutKind.Sequential)] public struct STARTUPINFO { public int cb; public String lpReserved; public String lpDesktop; public String lpTitle; public uint dwX; public uint dwY; public uint dwXSize; public uint dwYSize; public uint dwXCountChars; public uint dwYCountChars; public uint dwFillAttribute; public uint dwFlags; public short wShowWindow; public short cbReserved2; public IntPtr lpReserved2; public IntPtr hStdInput; public IntPtr hStdOutput; public IntPtr hStdError; } [StructLayout(LayoutKind.Sequential)] public struct PROCESS_INFORMATION { public IntPtr hProcess; public IntPtr hThread; public uint dwProcessId; public uint dwThreadId; } #endregion #region Enumerations enum TOKEN_TYPE : int { TokenPrimary = 1, TokenImpersonation = 2 } enum SECURITY_IMPERSONATION_LEVEL : int { SecurityAnonymous = 0, SecurityIdentification = 1, SecurityImpersonation = 2, SecurityDelegation = 3, } enum WTSInfoClass { InitialProgram, ApplicationName, WorkingDirectory, OEMId, SessionId, UserName, WinStationName, DomainName, ConnectState, ClientBuildNumber, ClientName, ClientDirectory, ClientProductId, ClientHardwareId, ClientAddress, ClientDisplay, ClientProtocolType } #endregion #region Constants public const int TOKEN_DUPLICATE = 0x0002; public const uint MAXIMUM_ALLOWED = 0x2000000; public const int CREATE_NEW_CONSOLE = 0x00000010; public const int IDLE_PRIORITY_CLASS = 0x40; public const int NORMAL_PRIORITY_CLASS = 0x20; public const int HIGH_PRIORITY_CLASS = 0x80; public const int REALTIME_PRIORITY_CLASS = 0x100; #endregion #region Win32 API Imports [DllImport("kernel32.dll", SetLastError = true)] private static extern bool CloseHandle(IntPtr hSnapshot); [DllImport("kernel32.dll")] static extern uint WTSGetActiveConsoleSessionId(); [DllImport("wtsapi32.dll", CharSet = CharSet.Unicode, SetLastError = true), SuppressUnmanagedCodeSecurityAttribute] static extern bool WTSQuerySessionInformation(System.IntPtr hServer, int sessionId, WTSInfoClass wtsInfoClass, out System.IntPtr ppBuffer, out uint pBytesReturned); [DllImport("advapi32.dll", EntryPoint = "CreateProcessAsUser", SetLastError = true, CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)] public extern static bool CreateProcessAsUser(IntPtr hToken, String lpApplicationName, String lpCommandLine, ref SECURITY_ATTRIBUTES lpProcessAttributes, ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandle, int dwCreationFlags, IntPtr lpEnvironment, String lpCurrentDirectory, ref STARTUPINFO lpStartupInfo, out PROCESS_INFORMATION lpProcessInformation); [DllImport("kernel32.dll")] static extern bool ProcessIdToSessionId(uint dwProcessId, ref uint pSessionId); [DllImport("advapi32.dll", EntryPoint = "DuplicateTokenEx")] public extern static bool DuplicateTokenEx(IntPtr ExistingTokenHandle, uint dwDesiredAccess, ref SECURITY_ATTRIBUTES lpThreadAttributes, int TokenType, int ImpersonationLevel, ref IntPtr DuplicateTokenHandle); [DllImport("kernel32.dll")] static extern IntPtr OpenProcess(uint dwDesiredAccess, bool bInheritHandle, uint dwProcessId); [DllImport("advapi32", SetLastError = true), SuppressUnmanagedCodeSecurityAttribute] static extern bool OpenProcessToken(IntPtr ProcessHandle, int DesiredAccess, ref IntPtr TokenHandle); #endregion public static string GetCurrentActiveUser() { IntPtr hServer = IntPtr.Zero, state = IntPtr.Zero; uint bCount = 0; // obtain the currently active session id; every logged on user in the system has a unique session id uint dwSessionId = WTSGetActiveConsoleSessionId(); string domain = string.Empty, userName = string.Empty; if (WTSQuerySessionInformation(hServer, (int)dwSessionId, WTSInfoClass.DomainName, out state, out bCount)) { domain = Marshal.PtrToStringAuto(state); } if (WTSQuerySessionInformation(hServer, (int)dwSessionId, WTSInfoClass.UserName, out state, out bCount)) { userName = Marshal.PtrToStringAuto(state); } return string.Format("{0}\\{1}", domain, userName); } /// <summary> /// Launches the given application with full admin rights, and in addition bypasses the Vista UAC prompt /// </summary> /// <param name="applicationName">The name of the application to launch</param> /// <param name="procInfo">Process information regarding the launched application that gets returned to the caller</param> /// <returns></returns> public static bool StartProcessAndBypassUAC(String applicationName, String command, out PROCESS_INFORMATION procInfo) { uint winlogonPid = 0; IntPtr hUserTokenDup = IntPtr.Zero, hPToken = IntPtr.Zero, hProcess = IntPtr.Zero; procInfo = new PROCESS_INFORMATION(); // obtain the currently active session id; every logged on user in the system has a unique session id uint dwSessionId = WTSGetActiveConsoleSessionId(); // obtain the process id of the winlogon process that is running within the currently active session Process[] processes = Process.GetProcessesByName("winlogon"); foreach (Process p in processes) { if ((uint)p.SessionId == dwSessionId) { winlogonPid = (uint)p.Id; } } // obtain a handle to the winlogon process hProcess = OpenProcess(MAXIMUM_ALLOWED, false, winlogonPid); // obtain a handle to the access token of the winlogon process if (!OpenProcessToken(hProcess, TOKEN_DUPLICATE, ref hPToken)) { CloseHandle(hProcess); return false; } // Security attibute structure used in DuplicateTokenEx and CreateProcessAsUser // I would prefer to not have to use a security attribute variable and to just // simply pass null and inherit (by default) the security attributes // of the existing token. However, in C# structures are value types and therefore // cannot be assigned the null value. SECURITY_ATTRIBUTES sa = new SECURITY_ATTRIBUTES(); sa.Length = Marshal.SizeOf(sa); // copy the access token of the winlogon process; the newly created token will be a primary token if (!DuplicateTokenEx(hPToken, MAXIMUM_ALLOWED, ref sa, (int)SECURITY_IMPERSONATION_LEVEL.SecurityIdentification, (int)TOKEN_TYPE.TokenPrimary, ref hUserTokenDup)) { CloseHandle(hProcess); CloseHandle(hPToken); return false; } // By default CreateProcessAsUser creates a process on a non-interactive window station, meaning // the window station has a desktop that is invisible and the process is incapable of receiving // user input. To remedy this we set the lpDesktop parameter to indicate we want to enable user // interaction with the new process. STARTUPINFO si = new STARTUPINFO(); si.cb = (int)Marshal.SizeOf(si); si.lpDesktop = @"winsta0\default"; // interactive window station parameter; basically this indicates that the process created can display a GUI on the desktop // flags that specify the priority and creation method of the process int dwCreationFlags = NORMAL_PRIORITY_CLASS | CREATE_NEW_CONSOLE; // create a new process in the current user's logon session bool result = CreateProcessAsUser(hUserTokenDup, // client's access token applicationName, // file to execute command, // command line ref sa, // pointer to process SECURITY_ATTRIBUTES ref sa, // pointer to thread SECURITY_ATTRIBUTES false, // handles are not inheritable dwCreationFlags, // creation flags IntPtr.Zero, // pointer to new environment block null, // name of current directory ref si, // pointer to STARTUPINFO structure out procInfo // receives information about new process ); // invalidate the handles CloseHandle(hProcess); CloseHandle(hPToken); CloseHandle(hUserTokenDup); return result; // return the result } } }
调用如下：
UserProcess.PROCESS_INFORMATION pInfo = new UserProcess.PROCESS_INFORMATION(); UserProcess.StartProcessAndBypassUAC("xxx.exe", string.Empty, out pInfo);
注意，该程序一定要写在“Windows服务”程序的代码中才有效，如果你把本程序代码写在“控制台应用程序”中运行是没有任何效果的。
