EapCredential

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct EapUsernamePasswordCredential
{
    public IntPtr username;
    public IntPtr password;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct EapCertificateCredential
{
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)] public byte[] certHash;
    public IntPtr password;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct EapSimCredential
{
    public IntPtr iccID;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct EapCredentialTypeData
{
    public EapUsernamePasswordCredential username_password;
    public EapCertificateCredential certificate;
    public EapSimCredential sim;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct EapCredential
{
    public int credType;
    public EapCredentialTypeData credData;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure EapUsernamePasswordCredential
    Public username As IntPtr
    Public password As IntPtr
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure EapCertificateCredential
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=20)> Public certHash() As Byte
    Public password As IntPtr
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure EapSimCredential
    Public iccID As IntPtr
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure EapCredentialTypeData
    Public username_password As EapUsernamePasswordCredential
    Public certificate As EapCertificateCredential
    Public sim As EapSimCredential
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure EapCredential
    Public credType As Integer
    Public credData As EapCredentialTypeData
End Structure

import ctypes
from ctypes import wintypes

class EapUsernamePasswordCredential(ctypes.Structure):
    _fields_ = [
        ("username", ctypes.c_void_p),
        ("password", ctypes.c_void_p),
    ]

class EapCertificateCredential(ctypes.Structure):
    _fields_ = [
        ("certHash", ctypes.c_ubyte * 20),
        ("password", ctypes.c_void_p),
    ]

class EapSimCredential(ctypes.Structure):
    _fields_ = [
        ("iccID", ctypes.c_void_p),
    ]

class EapCredentialTypeData(ctypes.Structure):
    _fields_ = [
        ("username_password", EapUsernamePasswordCredential),
        ("certificate", EapCertificateCredential),
        ("sim", EapSimCredential),
    ]

class EapCredential(ctypes.Structure):
    _fields_ = [
        ("credType", ctypes.c_int),
        ("credData", EapCredentialTypeData),
    ]

#[repr(C)]
pub struct EapUsernamePasswordCredential {
    pub username: *mut core::ffi::c_void,
    pub password: *mut core::ffi::c_void,
}

#[repr(C)]
pub struct EapCertificateCredential {
    pub certHash: [u8; 20],
    pub password: *mut core::ffi::c_void,
}

#[repr(C)]
pub struct EapSimCredential {
    pub iccID: *mut core::ffi::c_void,
}

#[repr(C)]
pub struct EapCredentialTypeData {
    pub username_password: EapUsernamePasswordCredential,
    pub certificate: EapCertificateCredential,
    pub sim: EapSimCredential,
}

#[repr(C)]
pub struct EapCredential {
    pub credType: i32,
    pub credData: EapCredentialTypeData,
}

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

type EapUsernamePasswordCredential struct {
	username uintptr
	password uintptr
}

type EapCertificateCredential struct {
	certHash [20]byte
	password uintptr
}

type EapSimCredential struct {
	iccID uintptr
}

type EapCredentialTypeData struct {
	username_password EapUsernamePasswordCredential
	certificate EapCertificateCredential
	sim EapSimCredential
}

type EapCredential struct {
	credType int32
	credData EapCredentialTypeData
}

type
  EapUsernamePasswordCredential = record
    username: Pointer;
    password: Pointer;
  end;

  EapCertificateCredential = record
    certHash: array[0..19] of Byte;
    password: Pointer;
  end;

  EapSimCredential = record
    iccID: Pointer;
  end;

  EapCredentialTypeData = record
    username_password: EapUsernamePasswordCredential;
    certificate: EapCertificateCredential;
    sim: EapSimCredential;
  end;

  EapCredential = record
    credType: Integer;
    credData: EapCredentialTypeData;
  end;

const EapUsernamePasswordCredential = extern struct {
    username: ?*anyopaque,
    password: ?*anyopaque,
};

const EapCertificateCredential = extern struct {
    certHash: [20]u8,
    password: ?*anyopaque,
};

const EapSimCredential = extern struct {
    iccID: ?*anyopaque,
};

const EapCredentialTypeData = extern struct {
    username_password: EapUsernamePasswordCredential,
    certificate: EapCertificateCredential,
    sim: EapSimCredential,
};

const EapCredential = extern struct {
    credType: i32,
    credData: EapCredentialTypeData,
};

type
  EapUsernamePasswordCredential {.bycopy.} = object
    username: pointer
    password: pointer

  EapCertificateCredential {.bycopy.} = object
    certHash: array[20, uint8]
    password: pointer

  EapSimCredential {.bycopy.} = object
    iccID: pointer

  EapCredentialTypeData {.bycopy.} = object
    username_password: EapUsernamePasswordCredential
    certificate: EapCertificateCredential
    sim: EapSimCredential

  EapCredential {.bycopy.} = object
    credType: int32
    credData: EapCredentialTypeData

struct EapUsernamePasswordCredential
{
    void* username;
    void* password;
}

struct EapCertificateCredential
{
    ubyte[20] certHash;
    void* password;
}

struct EapSimCredential
{
    void* iccID;
}

struct EapCredentialTypeData
{
    EapUsernamePasswordCredential username_password;
    EapCertificateCredential certificate;
    EapSimCredential sim;
}

struct EapCredential
{
    int credType;
    EapCredentialTypeData credData;
}