C# Winform 模拟无法工作

Question

我刚刚花了 2 天时间阅读了一堆关于 C# 模拟的资料(包括 stackoverflow 和 codeproject 文章)，这是我的调查结果。

简而言之，我只想从在标准(非特权)用户帐户下运行的 winform 应用程序启动和停止服务。我想用管理员帐户模拟我的用户。两个账户都是本地账户。

在下面的代码中，我在 token 检索期间没有收到任何错误(通过互操作调用)，但对 servicecontroller.Start 和 servicecontroller.Stop 的调用总是失败。

网络上的所有文章都描述了模拟用户的相同过程，但直到现在，我都无法让它工作，甚至无法获得有关问题所在的线索。

有没有人知道那里出了什么问题......

提前致谢

--布鲁诺

     public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,
        int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    public extern static bool CloseHandle(IntPtr handle);

    [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public extern static bool DuplicateToken(IntPtr ExistingTokenHandle,
        int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);
    private void button1_Click(object sender, EventArgs e)
    {


        WindowsImpersonationContext wic = ImpersonateUser(
                 "Administrator",
                 "machinename",
                 "password");

        try
        {
            ServiceController sc = new ServiceController("SERVICE_PERE");
            Process p = new Process();


            sc.Start();
        }
        catch (Exception ex)
        {

            Debugger.Break();
        }
        finally
        {
            wic.Undo();
        }


    }

    private void button2_Click(object sender, EventArgs e)
    {
        WindowsImpersonationContext wic = ImpersonateUser(
                 "Administrator",
                 "machinename",
                 "password");


        try
        {

            ServiceController sc = new ServiceController("SERVICE_PERE");

            sc.Stop();
        }
        catch (Exception ex)
        {
            Debugger.Break();

        }
        finally
        {
            wic.Undo();
            //CodeAccessPermission.RevertAssert();
        }
    }
    public WindowsImpersonationContext ImpersonateUser(string sUsername, string sDomain, string sPassword)
    {
        // initialize tokens

        IntPtr pExistingTokenHandle = new IntPtr(0);
        IntPtr pDuplicateTokenHandle = new IntPtr(0);
        pExistingTokenHandle = IntPtr.Zero;
        pDuplicateTokenHandle = IntPtr.Zero;

        // if domain name was blank, assume local machine

        if (sDomain == "")
            sDomain = System.Environment.MachineName;

        try
        {
            string sResult = null;

            const int LOGON32_PROVIDER_DEFAULT = 0;

            // create token

            const int LOGON32_LOGON_INTERACTIVE = 2;
            //const int SecurityImpersonation = 2;


            // get handle to token

            bool bImpersonated = LogonUser(sUsername, sDomain, sPassword,
                LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT,
                    ref pExistingTokenHandle);

            // did impersonation fail?

            if (false == bImpersonated)
            {
                int nErrorCode = Marshal.GetLastWin32Error();
                sResult = "LogonUser() failed with error code: " +
                    nErrorCode + "\r\n";

                // show the reason why LogonUser failed

                //MessageBox.Show(this, sResult, "Error",
                //    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            // Get identity before impersonation

            sResult += "Before impersonation: " +
                WindowsIdentity.GetCurrent().Name + "\r\n";

            bool bRetVal = DuplicateToken(pExistingTokenHandle,
                2, ref pDuplicateTokenHandle);

            // did DuplicateToken fail?

            if (false == bRetVal)
            {
                int nErrorCode = Marshal.GetLastWin32Error();
                // close existing handle

                CloseHandle(pExistingTokenHandle);
                sResult += "DuplicateToken() failed with error code: "
                    + nErrorCode + "\r\n";

                // show the reason why DuplicateToken failed

                //MessageBox.Show(this, sResult, "Error",
                //    MessageBoxButtons.OK, MessageBoxIcon.Error);
                return null;
            }
            else
            {
                // create new identity using new primary token

                WindowsIdentity newId = new WindowsIdentity
                                            (pDuplicateTokenHandle);

                WindowsImpersonationContext impersonatedUser =
                                            newId.Impersonate();

                // check the identity after impersonation

                sResult += "After impersonation: " +
                    WindowsIdentity.GetCurrent().Name + "\r\n";

                //MessageBox.Show(this, sResult, "Success",
                //    MessageBoxButtons.OK, MessageBoxIcon.Information);
                return impersonatedUser;
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            // close handle(s)

            if (pExistingTokenHandle != IntPtr.Zero)
                CloseHandle(pExistingTokenHandle);
            if (pDuplicateTokenHandle != IntPtr.Zero)
                CloseHandle(pDuplicateTokenHandle);
        }
    }
}

public enum LogonType
{
    LOGON32_LOGON_INTERACTIVE = 2,
    LOGON32_LOGON_NETWORK = 3,
    LOGON32_LOGON_BATCH = 4,
    LOGON32_LOGON_SERVICE = 5,
    LOGON32_LOGON_UNLOCK = 7,
    LOGON32_LOGON_NETWORK_CLEARTEXT = 8,
    LOGON32_LOGON_NEW_CREDENTIALS = 9,
}
public enum LogonProvider
{
    LOGON32_PROVIDER_DEFAULT = 0,
}

Answer 1

启动和停止服务需要管理员权限。您不能通过模拟绕过 UAC，您必须显示提升提示。 This answer向您展示如何。