Programming is Fun

[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 = System.Runtime.InteropServices.CharSet.Auto)]
private unsafe static extern int FormatMessage(int dwFlags, ref IntPtr lpSource, int dwMessageId, int dwLanguageId, ref String lpBuffer, int nSize, IntPtr* Arguments);

[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);

public unsafe static string GetErrorMessage(int errorCode)
{
    int FORMAT_MESSAGE_ALLOCATE_BUFFER = 0x00000100;
    int FORMAT_MESSAGE_IGNORE_INSERTS = 0x00000200;
    int FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000;

    int messageSize = 255;
    String lpMsgBuf = "";
    int dwFlags = FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;

    IntPtr ptrlpSource = IntPtr.Zero;
    IntPtr prtArguments = IntPtr.Zero;

    int retVal = FormatMessage(dwFlags, ref ptrlpSource, errorCode, 0, ref lpMsgBuf, messageSize, &prtArguments);
    if(0 == retVal)
    {
        throw new Exception("Failed to format message for error code " + errorCode + ". ");
    }

    return lpMsgBuf;
}

static void Main(string[] args)
{
    const int LOGON32_PROVIDER_DEFAULT = 0;
    const int LOGON32_LOGON_INTERACTIVE = 2;
    const int SecurityImpersonation = 2;

    var tokenHandle = IntPtr.Zero;
    bool returnValue = LogonUser(@"Administrator@vplex.net", "network ip in here", "this is password", 9, 0, ref tokenHandle);
    Console.WriteLine("LogonUser called.");
    if(false == returnValue)
    {
        int ret = Marshal.GetLastWin32Error();
        Console.WriteLine("LogonUser failed with error code : {0}", ret);
        Console.WriteLine("\nError: [{0}] {1}\n", ret, GetErrorMessage(ret));
        int errorCode = 0x5; //ERROR_ACCESS_DENIED
        throw new System.ComponentModel.Win32Exception(errorCode);
    }
    else
    {
        var ykyoonAdmin = new WindowsIdentity(tokenHandle);
        var wic = ykyoonAdmin.Impersonate();
        File.Copy("C:\\System.Web.Mvc.dll", "\\\\10.30.3.24\\c$\\abc.dll", true);
        wic.Undo();
        wic.Dispose();
    }
    CloseHandle(tokenHandle);
}

public override string ToString()
{
    StringBuilder sb = new StringBuilder();
    sb.AppendLine(string.Format("<{0}>", GetType().Name));
    foreach(PropertyInfo property in GetType().GetProperties())
    {
        string propertyName = property.Name;
        object value = property.GetValue(this, null);
        if(value != null)
        {
            if(value is IEnumerable && !(value is string))
            {
                sb.AppendLine(string.Format("<{0}>", propertyName));
                IEnumerator enumerator = ((IEnumerable)value).GetEnumerator();
                while(enumerator.MoveNext())
                {
                    sb.AppendLine(enumerator.Current.ToString());
                }
                sb.AppendLine(string.Format("", propertyName));
            }
            else
            {
                sb.AppendLine(string.Format("<{0}>{1}", propertyName, value.ToString()));
            }
        }
    }
    sb.Append(string.Format("", GetType().Name));
    return sb.ToString();
}