IPsecSaContextSubscriptionsGet0

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

DWORD IPsecSaContextSubscriptionsGet0(
    FWPM_ENGINE_HANDLE engineHandle,
    IPSEC_SA_CONTEXT_SUBSCRIPTION0*** entries,
    DWORD* numEntries
);

<DllImport("fwpuclnt.dll", ExactSpelling:=True)>
Public Shared Function IPsecSaContextSubscriptionsGet0(
    engineHandle As FWPM_ENGINE_HANDLE,   ' FWPM_ENGINE_HANDLE
    entries As IntPtr,   ' IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
    <Out> ByRef numEntries As UInteger   ' DWORD* out
) As UInteger
End Function

' engineHandle : FWPM_ENGINE_HANDLE
' entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
' numEntries : DWORD* out
Declare PtrSafe Function IPsecSaContextSubscriptionsGet0 Lib "fwpuclnt" ( _
    ByVal engineHandle As LongPtr, _
    ByVal entries As LongPtr, _
    ByRef numEntries As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

IPsecSaContextSubscriptionsGet0 = ctypes.windll.fwpuclnt.IPsecSaContextSubscriptionsGet0
IPsecSaContextSubscriptionsGet0.restype = wintypes.DWORD
IPsecSaContextSubscriptionsGet0.argtypes = [
    FWPM_ENGINE_HANDLE,  # engineHandle : FWPM_ENGINE_HANDLE
    ctypes.c_void_p,  # entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
    ctypes.POINTER(wintypes.DWORD),  # numEntries : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('fwpuclnt.dll')
IPsecSaContextSubscriptionsGet0 = Fiddle::Function.new(
  lib['IPsecSaContextSubscriptionsGet0'],
  [
    Fiddle::TYPE_VOIDP,  # engineHandle : FWPM_ENGINE_HANDLE
    Fiddle::TYPE_VOIDP,  # entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
    Fiddle::TYPE_VOIDP,  # numEntries : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "fwpuclnt")]
extern "system" {
    fn IPsecSaContextSubscriptionsGet0(
        engineHandle: FWPM_ENGINE_HANDLE,  // FWPM_ENGINE_HANDLE
        entries: *mut *mut *mut IPSEC_SA_CONTEXT_SUBSCRIPTION0,  // IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
        numEntries: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("fwpuclnt.dll")]
public static extern uint IPsecSaContextSubscriptionsGet0(FWPM_ENGINE_HANDLE engineHandle, IntPtr entries, out uint numEntries);
"@
$api = Add-Type -MemberDefinition $sig -Name 'fwpuclnt_IPsecSaContextSubscriptionsGet0' -Namespace Win32 -PassThru
# $api::IPsecSaContextSubscriptionsGet0(engineHandle, entries, numEntries)

#uselib "fwpuclnt.dll"
#func global IPsecSaContextSubscriptionsGet0 "IPsecSaContextSubscriptionsGet0" sptr, sptr, sptr
; IPsecSaContextSubscriptionsGet0 engineHandle, varptr(entries), varptr(numEntries)   ; 戻り値は stat
; engineHandle : FWPM_ENGINE_HANDLE -> "sptr"
; entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out -> "sptr"
; numEntries : DWORD* out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 IPsecSaContextSubscriptionsGet0 "IPsecSaContextSubscriptionsGet0" int, var, var
; res = IPsecSaContextSubscriptionsGet0(engineHandle, entries, numEntries)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out -> "var"
; numEntries : DWORD* out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 IPsecSaContextSubscriptionsGet0(FWPM_ENGINE_HANDLE engineHandle, IPSEC_SA_CONTEXT_SUBSCRIPTION0*** entries, DWORD* numEntries)
#uselib "fwpuclnt.dll"
#cfunc global IPsecSaContextSubscriptionsGet0 "IPsecSaContextSubscriptionsGet0" int, var, var
; res = IPsecSaContextSubscriptionsGet0(engineHandle, entries, numEntries)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out -> "var"
; numEntries : DWORD* out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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")
	procIPsecSaContextSubscriptionsGet0 = fwpuclnt.NewProc("IPsecSaContextSubscriptionsGet0")
)

// engineHandle (FWPM_ENGINE_HANDLE), entries (IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out), numEntries (DWORD* out)
r1, _, err := procIPsecSaContextSubscriptionsGet0.Call(
	uintptr(engineHandle),
	uintptr(entries),
	uintptr(numEntries),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function IPsecSaContextSubscriptionsGet0(
  engineHandle: FWPM_ENGINE_HANDLE;   // FWPM_ENGINE_HANDLE
  entries: Pointer;   // IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
  numEntries: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'fwpuclnt.dll' name 'IPsecSaContextSubscriptionsGet0';

result := DllCall("fwpuclnt\IPsecSaContextSubscriptionsGet0"
    , "Ptr", engineHandle   ; FWPM_ENGINE_HANDLE
    , "Ptr", entries   ; IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out
    , "Ptr", numEntries   ; DWORD* out
    , "UInt")   ; return: DWORD

●IPsecSaContextSubscriptionsGet0(engineHandle, entries, numEntries) = DLL("fwpuclnt.dll", "dword IPsecSaContextSubscriptionsGet0(void*, void*, void*)")
# 呼び出し: IPsecSaContextSubscriptionsGet0(engineHandle, entries, numEntries)
# engineHandle : FWPM_ENGINE_HANDLE -> "void*"
# entries : IPSEC_SA_CONTEXT_SUBSCRIPTION0*** out -> "void*"
# numEntries : DWORD* 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)。