C # service status on a remote machine

Question

I am an expert programmer, so I have no idea how WTH I do :)

On a serious note; No, I'm not an expert. I have a problem, although I don’t know how to fix it. Well, I (I think) know what the problem is, and I hope someone here can help.

Here is a brief overview of the problem. I am creating a form in C # that will perform some server and database administration tasks for me. I have a button that, when clicked, should return the status of the "x" service on the server "y". The status is printed on the screen in the text box.

Here is my code:

     private void button2_Click(object sender, EventArgs e)
    {
        string fs = "Service X Status = ";
        string mr = "Service A Status = ";
        string qp = "Service B Status = ";
        string sp = "Spooler Service Status = ";
        ServiceController fssc = new ServiceController("xService", "yServer");
        ServiceController mrsc = new ServiceController("aService", "yServer");
        ServiceController qpsc = new ServiceController("bService", "yServer");
        ServiceController spsc = new ServiceController("Spooler", "yServer");

        try
        {
            txtGtwySts.AppendText(sp + spsc.Status.ToString());
            txtGtwySts.AppendText(Environment.NewLine);
            txtGtwySts.AppendText(fs + fssc.Status.ToString());
            txtGtwySts.AppendText(Environment.NewLine);
            txtGtwySts.AppendText(mr + mrsc.Status.ToString());
            txtGtwySts.AppendText(Environment.NewLine);
            txtGtwySts.AppendText(qp + qpsc.Status.ToString());
        }
        catch (Exception crap)
        {
            string msg = "";
            int i;
            for (i = 0; i < crap.Message.Count(); i++)
            {
                msg += "Error # " + i + " Message: " + crap.Message + "\n";

            }
            MessageBox.Show(msg);
            MessageBox.Show(i.ToString());
        }
    }

, : " " "" ". , , /. Spooler.

... , , , . - , , , :)

Answer 1

...

:

using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Principal;
using System.Runtime.InteropServices;
using System.Security.Permissions;

public class ImpersonateUser
{
    [DllImport("advapi32.dll", SetLastError = true)]
    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);
    private static IntPtr tokenHandle = new IntPtr(0);
    private static WindowsImpersonationContext impersonatedUser;
    // If you incorporate this code into a DLL, be sure to demand that it
    // runs with FullTrust.
    [PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")]
    public void Impersonate(string domainName, string userName, string password)
    {
        //try
        {
            // Use the unmanaged LogonUser function to get the user token for
            // the specified user, domain, and password.
            const int LOGON32_PROVIDER_DEFAULT = 0;
            // Passing this parameter causes LogonUser to create a primary token.
            const int LOGON32_LOGON_INTERACTIVE = 2;
            tokenHandle = IntPtr.Zero;
            // ---- Step - 1
            // Call LogonUser to obtain a handle to an access token.
            bool returnValue = LogonUser(
            userName,
            domainName,
            password,
            LOGON32_LOGON_INTERACTIVE,
            LOGON32_PROVIDER_DEFAULT,
            ref tokenHandle); // tokenHandle - new security token
            if (false == returnValue)
            {
                int ret = Marshal.GetLastWin32Error();
                throw new System.ComponentModel.Win32Exception(ret);
            }
            // ---- Step - 2
            WindowsIdentity newId = new WindowsIdentity(tokenHandle);
            // ---- Step - 3
            {
                impersonatedUser = newId.Impersonate();
            }
        }
    }
    // Stops impersonation
    public void Undo()
    {
        impersonatedUser.Undo();
        // Free the tokens.
        if (tokenHandle != IntPtr.Zero)
        {
            CloseHandle(tokenHandle);
        }            
    }        
}    

}

, , :

ImpersonateUser iu = new ImpersonateUser();
iu.Impersonate("[domain]","[username]","[password]");
// code you want to execute as impersonated user.....
iu.Undo();