/// <summary>
/// Create a <see cref="WindowsIdentity"/> given the userName, domainName and password.
/// </summary>
/// <param name="userName">the user name</param>
/// <param name="domainName">the domain name</param>
/// <param name="password">the password</param>
/// <returns>the <see cref="WindowsIdentity"/> for the account specified</returns>
/// <remarks>
/// <para>
/// Uses the Windows API call LogonUser to get a principal token for the account. This
/// token is used to initialize the WindowsIdentity.
/// </para>
/// </remarks>
private static WindowsIdentity LogonUser(string userName, string domainName, string password)
{
const int LOGON32_PROVIDER_DEFAULT = 0;
//This parameter causes LogonUser to create a primary token.
const int LOGON32_LOGON_INTERACTIVE = 2;
// Call LogonUser to obtain a handle to an access token.
IntPtr tokenHandle = IntPtr.Zero;
if (!LogonUser(userName, domainName, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref tokenHandle))
{
NativeError error = NativeError.GetLastError();
throw new Exception("Failed to LogonUser [" + userName + "] in Domain [" + domainName + "]. Error: " + error.ToString());
}
const int SecurityImpersonation = 2;
IntPtr dupeTokenHandle = IntPtr.Zero;
if (!DuplicateToken(tokenHandle, SecurityImpersonation, ref dupeTokenHandle))
{
NativeError error = NativeError.GetLastError();
if (tokenHandle != IntPtr.Zero)
{
CloseHandle(tokenHandle);
}
throw new Exception("Failed to DuplicateToken after LogonUser. Error: " + error.ToString());
}
WindowsIdentity identity = new WindowsIdentity(dupeTokenHandle);
// Free the tokens.
if (dupeTokenHandle != IntPtr.Zero)
{
CloseHandle(dupeTokenHandle);
}
if (tokenHandle != IntPtr.Zero)
{
CloseHandle(tokenHandle);
}
return(identity);
}
/// <summary>
/// Create a new instance of the <see cref="NativeError" /> class.
/// </summary>
/// <param name="number">the error number for the native error</param>
/// <returns>
/// An instance of the <see cref="NativeError" /> class for the specified
/// error number.
/// </returns>
/// <remarks>
/// <para>
/// The message for the specified error number is lookup up using the
/// native Win32 <c>FormatMessage</c> function.
/// </para>
/// </remarks>
public static NativeError GetError(int number)
{
return(new NativeError(number, NativeError.GetErrorMessage(number)));
}
/// <summary>
/// Create a new instance of the <see cref="NativeError" /> class for the last Windows error.
/// </summary>
/// <returns>
/// An instance of the <see cref="NativeError" /> class for the last windows error.
/// </returns>
/// <remarks>
/// <para>
/// The message for the <see cref="Marshal.GetLastWin32Error"/> error number is lookup up using the
/// native Win32 <c>FormatMessage</c> function.
/// </para>
/// </remarks>
public static NativeError GetLastError()
{
int number = Marshal.GetLastWin32Error();
return(new NativeError(number, NativeError.GetErrorMessage(number)));
}