using System;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Principal;
 
namespace VF_Common
{
    public class Security
    {
        #region Impersonificazione di Windows
        public const int LOGON32_LOGON_INTERACTIVE = 2;
        public const int LOGON32_PROVIDER_DEFAULT = 0;
 
        WindowsImpersonationContext m_impersonationContext;
 
        [DllImport("advapi32.dll")]
        public static extern int LogonUserA(String lpszUserName,
        String lpszDomain,
        String lpszPassword,
        int dwLogonType,
        int dwLogonProvider,
        ref IntPtr phToken);
        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int DuplicateToken(IntPtr hToken,
        int impersonationLevel,
        ref IntPtr hNewToken);
 
        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern bool RevertToSelf();
 
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool CloseHandle(IntPtr handle);
 
 
        public bool ImpersonateValidUser(String userName, String domain, String password)
        {
            WindowsIdentity tempWindowsIdentity;
            IntPtr token = IntPtr.Zero;
            IntPtr tokenDuplicate = IntPtr.Zero;
 
            if (RevertToSelf())
            {
                if (LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE,
                LOGON32_PROVIDER_DEFAULT, ref token) != 0)
                {
                    if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
                    {
                        tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
                        m_impersonationContext = tempWindowsIdentity.Impersonate();
                        if (m_impersonationContext != null)
                        {
                            CloseHandle(token);
                            CloseHandle(tokenDuplicate);
                            return true;
                        }
                    }
                }
            }
            if (token != IntPtr.Zero)
                CloseHandle(token);
            if (tokenDuplicate != IntPtr.Zero)
                CloseHandle(tokenDuplicate);
            return false;
        }
        public void UndoImpersonation()
        {
            try
            {
                m_impersonationContext.Undo();
            }
            catch (Exception ex)
            {
            }
        }
        #endregion
 
        public static SecureString ToSecureStr(string text)
        {
            SecureString strOut = new SecureString();
            foreach (char c in text)
            {
                strOut.AppendChar(c);
            }
            return strOut;
        }
    }
}

public HttpResponseMessage CreateBareRepository(string relPathBareRepoName)
{
     HttpResponseMessage response = null;
     string errorMsg = string.Empty;
     string execOutput = string.Empty;
 
    m_Security.ImpersonateValidUser(m_userName, m_domain, m_password);
 
    response = Request.CreateResponse(HttpStatusCode.OK, execOutput);    // <--- OK !
    response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
 
    m_Security.UndoImpersonation();
    return response;
}