AUTH_VALIDATION_EX

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct MPRAPI_OBJECT_HEADER
{
    public byte revision;
    public byte type;
    public ushort size;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct AUTH_VALIDATION_EX
{
    public MPRAPI_OBJECT_HEADER Header;
    public IntPtr hRasConnection;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 257)] public string wszUserName;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)] public string wszLogonDomain;
    public uint AuthInfoSize;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] public byte[] AuthInfo;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure MPRAPI_OBJECT_HEADER
    Public revision As Byte
    Public type As Byte
    Public size As UShort
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure AUTH_VALIDATION_EX
    Public Header As MPRAPI_OBJECT_HEADER
    Public hRasConnection As IntPtr
    <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=257)> Public wszUserName As String
    <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=16)> Public wszLogonDomain As String
    Public AuthInfoSize As UInteger
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=1)> Public AuthInfo() As Byte
End Structure

import ctypes
from ctypes import wintypes

class MPRAPI_OBJECT_HEADER(ctypes.Structure):
    _fields_ = [
        ("revision", ctypes.c_ubyte),
        ("type", ctypes.c_ubyte),
        ("size", ctypes.c_ushort),
    ]

class AUTH_VALIDATION_EX(ctypes.Structure):
    _fields_ = [
        ("Header", MPRAPI_OBJECT_HEADER),
        ("hRasConnection", ctypes.c_void_p),
        ("wszUserName", ctypes.c_wchar * 257),
        ("wszLogonDomain", ctypes.c_wchar * 16),
        ("AuthInfoSize", wintypes.DWORD),
        ("AuthInfo", ctypes.c_ubyte * 1),
    ]

#[repr(C)]
pub struct MPRAPI_OBJECT_HEADER {
    pub revision: u8,
    pub type: u8,
    pub size: u16,
}

#[repr(C)]
pub struct AUTH_VALIDATION_EX {
    pub Header: MPRAPI_OBJECT_HEADER,
    pub hRasConnection: *mut core::ffi::c_void,
    pub wszUserName: [u16; 257],
    pub wszLogonDomain: [u16; 16],
    pub AuthInfoSize: u32,
    pub AuthInfo: [u8; 1],
}

import "golang.org/x/sys/windows"

type MPRAPI_OBJECT_HEADER struct {
	revision byte
	type byte
	size uint16
}

type AUTH_VALIDATION_EX struct {
	Header MPRAPI_OBJECT_HEADER
	hRasConnection uintptr
	wszUserName [257]uint16
	wszLogonDomain [16]uint16
	AuthInfoSize uint32
	AuthInfo [1]byte
}

type
  MPRAPI_OBJECT_HEADER = record
    revision: Byte;
    type: Byte;
    size: Word;
  end;

  AUTH_VALIDATION_EX = record
    Header: MPRAPI_OBJECT_HEADER;
    hRasConnection: Pointer;
    wszUserName: array[0..256] of WideChar;
    wszLogonDomain: array[0..15] of WideChar;
    AuthInfoSize: DWORD;
    AuthInfo: array[0..0] of Byte;
  end;

const MPRAPI_OBJECT_HEADER = extern struct {
    revision: u8,
    type: u8,
    size: u16,
};

const AUTH_VALIDATION_EX = extern struct {
    Header: MPRAPI_OBJECT_HEADER,
    hRasConnection: ?*anyopaque,
    wszUserName: [257]u16,
    wszLogonDomain: [16]u16,
    AuthInfoSize: u32,
    AuthInfo: [1]u8,
};

type
  MPRAPI_OBJECT_HEADER {.bycopy.} = object
    revision: uint8
    type: uint8
    size: uint16

  AUTH_VALIDATION_EX {.bycopy.} = object
    Header: MPRAPI_OBJECT_HEADER
    hRasConnection: pointer
    wszUserName: array[257, uint16]
    wszLogonDomain: array[16, uint16]
    AuthInfoSize: uint32
    AuthInfo: array[1, uint8]

struct MPRAPI_OBJECT_HEADER
{
    ubyte revision;
    ubyte type;
    ushort size;
}

struct AUTH_VALIDATION_EX
{
    MPRAPI_OBJECT_HEADER Header;
    void* hRasConnection;
    wchar[257] wszUserName;
    wchar[16] wszLogonDomain;
    uint AuthInfoSize;
    ubyte[1] AuthInfo;
}