FwpmEngineOpen0

// fwpuclnt.dll
#include <windows.h>

DWORD FwpmEngineOpen0(
    LPCWSTR serverName,   // optional
    DWORD authnService,
    SEC_WINNT_AUTH_IDENTITY_W* authIdentity,   // optional
    const FWPM_SESSION0* session,   // optional
    FWPM_ENGINE_HANDLE* engineHandle
);

<DllImport("fwpuclnt.dll", ExactSpelling:=True)>
Public Shared Function FwpmEngineOpen0(
    <MarshalAs(UnmanagedType.LPWStr)> serverName As String,   ' LPCWSTR optional
    authnService As UInteger,   ' DWORD
    authIdentity As IntPtr,   ' SEC_WINNT_AUTH_IDENTITY_W* optional
    session As IntPtr,   ' FWPM_SESSION0* optional
    engineHandle As IntPtr   ' FWPM_ENGINE_HANDLE* out
) As UInteger
End Function

' serverName : LPCWSTR optional
' authnService : DWORD
' authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional
' session : FWPM_SESSION0* optional
' engineHandle : FWPM_ENGINE_HANDLE* out
Declare PtrSafe Function FwpmEngineOpen0 Lib "fwpuclnt" ( _
    ByVal serverName As LongPtr, _
    ByVal authnService As Long, _
    ByVal authIdentity As LongPtr, _
    ByVal session As LongPtr, _
    ByVal engineHandle As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

FwpmEngineOpen0 = ctypes.windll.fwpuclnt.FwpmEngineOpen0
FwpmEngineOpen0.restype = wintypes.DWORD
FwpmEngineOpen0.argtypes = [
    wintypes.LPCWSTR,  # serverName : LPCWSTR optional
    wintypes.DWORD,  # authnService : DWORD
    ctypes.c_void_p,  # authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional
    ctypes.c_void_p,  # session : FWPM_SESSION0* optional
    ctypes.c_void_p,  # engineHandle : FWPM_ENGINE_HANDLE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('fwpuclnt.dll')
FwpmEngineOpen0 = Fiddle::Function.new(
  lib['FwpmEngineOpen0'],
  [
    Fiddle::TYPE_VOIDP,  # serverName : LPCWSTR optional
    -Fiddle::TYPE_INT,  # authnService : DWORD
    Fiddle::TYPE_VOIDP,  # authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional
    Fiddle::TYPE_VOIDP,  # session : FWPM_SESSION0* optional
    Fiddle::TYPE_VOIDP,  # engineHandle : FWPM_ENGINE_HANDLE* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "fwpuclnt")]
extern "system" {
    fn FwpmEngineOpen0(
        serverName: *const u16,  // LPCWSTR optional
        authnService: u32,  // DWORD
        authIdentity: *mut SEC_WINNT_AUTH_IDENTITY_W,  // SEC_WINNT_AUTH_IDENTITY_W* optional
        session: *const FWPM_SESSION0,  // FWPM_SESSION0* optional
        engineHandle: *mut FWPM_ENGINE_HANDLE  // FWPM_ENGINE_HANDLE* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("fwpuclnt.dll")]
public static extern uint FwpmEngineOpen0([MarshalAs(UnmanagedType.LPWStr)] string serverName, uint authnService, IntPtr authIdentity, IntPtr session, IntPtr engineHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'fwpuclnt_FwpmEngineOpen0' -Namespace Win32 -PassThru
# $api::FwpmEngineOpen0(serverName, authnService, authIdentity, session, engineHandle)

#uselib "fwpuclnt.dll"
#func global FwpmEngineOpen0 "FwpmEngineOpen0" sptr, sptr, sptr, sptr, sptr
; FwpmEngineOpen0 serverName, authnService, varptr(authIdentity), varptr(session), varptr(engineHandle)   ; 戻り値は stat
; serverName : LPCWSTR optional -> "sptr"
; authnService : DWORD -> "sptr"
; authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional -> "sptr"
; session : FWPM_SESSION0* optional -> "sptr"
; engineHandle : FWPM_ENGINE_HANDLE* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "fwpuclnt.dll"
#cfunc global FwpmEngineOpen0 "FwpmEngineOpen0" wstr, int, var, var, var
; res = FwpmEngineOpen0(serverName, authnService, authIdentity, session, engineHandle)
; serverName : LPCWSTR optional -> "wstr"
; authnService : DWORD -> "int"
; authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional -> "var"
; session : FWPM_SESSION0* optional -> "var"
; engineHandle : FWPM_ENGINE_HANDLE* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; DWORD FwpmEngineOpen0(LPCWSTR serverName, DWORD authnService, SEC_WINNT_AUTH_IDENTITY_W* authIdentity, FWPM_SESSION0* session, FWPM_ENGINE_HANDLE* engineHandle)
#uselib "fwpuclnt.dll"
#cfunc global FwpmEngineOpen0 "FwpmEngineOpen0" wstr, int, var, var, var
; res = FwpmEngineOpen0(serverName, authnService, authIdentity, session, engineHandle)
; serverName : LPCWSTR optional -> "wstr"
; authnService : DWORD -> "int"
; authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional -> "var"
; session : FWPM_SESSION0* optional -> "var"
; engineHandle : FWPM_ENGINE_HANDLE* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	fwpuclnt = windows.NewLazySystemDLL("fwpuclnt.dll")
	procFwpmEngineOpen0 = fwpuclnt.NewProc("FwpmEngineOpen0")
)

// serverName (LPCWSTR optional), authnService (DWORD), authIdentity (SEC_WINNT_AUTH_IDENTITY_W* optional), session (FWPM_SESSION0* optional), engineHandle (FWPM_ENGINE_HANDLE* out)
r1, _, err := procFwpmEngineOpen0.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(serverName))),
	uintptr(authnService),
	uintptr(authIdentity),
	uintptr(session),
	uintptr(engineHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function FwpmEngineOpen0(
  serverName: PWideChar;   // LPCWSTR optional
  authnService: DWORD;   // DWORD
  authIdentity: Pointer;   // SEC_WINNT_AUTH_IDENTITY_W* optional
  session: Pointer;   // FWPM_SESSION0* optional
  engineHandle: Pointer   // FWPM_ENGINE_HANDLE* out
): DWORD; stdcall;
  external 'fwpuclnt.dll' name 'FwpmEngineOpen0';

result := DllCall("fwpuclnt\FwpmEngineOpen0"
    , "WStr", serverName   ; LPCWSTR optional
    , "UInt", authnService   ; DWORD
    , "Ptr", authIdentity   ; SEC_WINNT_AUTH_IDENTITY_W* optional
    , "Ptr", session   ; FWPM_SESSION0* optional
    , "Ptr", engineHandle   ; FWPM_ENGINE_HANDLE* out
    , "UInt")   ; return: DWORD

●FwpmEngineOpen0(serverName, authnService, authIdentity, session, engineHandle) = DLL("fwpuclnt.dll", "dword FwpmEngineOpen0(char*, dword, void*, void*, void*)")
# 呼び出し: FwpmEngineOpen0(serverName, authnService, authIdentity, session, engineHandle)
# serverName : LPCWSTR optional -> "char*"
# authnService : DWORD -> "dword"
# authIdentity : SEC_WINNT_AUTH_IDENTITY_W* optional -> "void*"
# session : FWPM_SESSION0* optional -> "void*"
# engineHandle : FWPM_ENGINE_HANDLE* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。