IPsecSaContextGetById0

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

DWORD IPsecSaContextGetById0(
    FWPM_ENGINE_HANDLE engineHandle,
    ULONGLONG id,
    IPSEC_SA_CONTEXT0** saContext
);

<DllImport("fwpuclnt.dll", ExactSpelling:=True)>
Public Shared Function IPsecSaContextGetById0(
    engineHandle As FWPM_ENGINE_HANDLE,   ' FWPM_ENGINE_HANDLE
    id As ULong,   ' ULONGLONG
    saContext As IntPtr   ' IPSEC_SA_CONTEXT0** out
) As UInteger
End Function

' engineHandle : FWPM_ENGINE_HANDLE
' id : ULONGLONG
' saContext : IPSEC_SA_CONTEXT0** out
Declare PtrSafe Function IPsecSaContextGetById0 Lib "fwpuclnt" ( _
    ByVal engineHandle As LongPtr, _
    ByVal id As LongLong, _
    ByVal saContext 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

IPsecSaContextGetById0 = ctypes.windll.fwpuclnt.IPsecSaContextGetById0
IPsecSaContextGetById0.restype = wintypes.DWORD
IPsecSaContextGetById0.argtypes = [
    FWPM_ENGINE_HANDLE,  # engineHandle : FWPM_ENGINE_HANDLE
    ctypes.c_ulonglong,  # id : ULONGLONG
    ctypes.c_void_p,  # saContext : IPSEC_SA_CONTEXT0** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('fwpuclnt.dll')
IPsecSaContextGetById0 = Fiddle::Function.new(
  lib['IPsecSaContextGetById0'],
  [
    Fiddle::TYPE_VOIDP,  # engineHandle : FWPM_ENGINE_HANDLE
    -Fiddle::TYPE_LONG_LONG,  # id : ULONGLONG
    Fiddle::TYPE_VOIDP,  # saContext : IPSEC_SA_CONTEXT0** out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "fwpuclnt")]
extern "system" {
    fn IPsecSaContextGetById0(
        engineHandle: FWPM_ENGINE_HANDLE,  // FWPM_ENGINE_HANDLE
        id: u64,  // ULONGLONG
        saContext: *mut *mut IPSEC_SA_CONTEXT0  // IPSEC_SA_CONTEXT0** out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("fwpuclnt.dll")]
public static extern uint IPsecSaContextGetById0(FWPM_ENGINE_HANDLE engineHandle, ulong id, IntPtr saContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'fwpuclnt_IPsecSaContextGetById0' -Namespace Win32 -PassThru
# $api::IPsecSaContextGetById0(engineHandle, id, saContext)

#uselib "fwpuclnt.dll"
#func global IPsecSaContextGetById0 "IPsecSaContextGetById0" sptr, sptr, sptr
; IPsecSaContextGetById0 engineHandle, id, varptr(saContext)   ; 戻り値は stat
; engineHandle : FWPM_ENGINE_HANDLE -> "sptr"
; id : ULONGLONG -> "sptr"
; saContext : IPSEC_SA_CONTEXT0** 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 int64 引数(64bit値渡し)に非対応です。
; ※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 IPsecSaContextGetById0 "IPsecSaContextGetById0" int, int64, var
; res = IPsecSaContextGetById0(engineHandle, id, saContext)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; id : ULONGLONG -> "int64"
; saContext : IPSEC_SA_CONTEXT0** 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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; DWORD IPsecSaContextGetById0(FWPM_ENGINE_HANDLE engineHandle, ULONGLONG id, IPSEC_SA_CONTEXT0** saContext)
#uselib "fwpuclnt.dll"
#cfunc global IPsecSaContextGetById0 "IPsecSaContextGetById0" int, int64, var
; res = IPsecSaContextGetById0(engineHandle, id, saContext)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; id : ULONGLONG -> "int64"
; saContext : IPSEC_SA_CONTEXT0** 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")
	procIPsecSaContextGetById0 = fwpuclnt.NewProc("IPsecSaContextGetById0")
)

// engineHandle (FWPM_ENGINE_HANDLE), id (ULONGLONG), saContext (IPSEC_SA_CONTEXT0** out)
r1, _, err := procIPsecSaContextGetById0.Call(
	uintptr(engineHandle),
	uintptr(id),
	uintptr(saContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function IPsecSaContextGetById0(
  engineHandle: FWPM_ENGINE_HANDLE;   // FWPM_ENGINE_HANDLE
  id: UInt64;   // ULONGLONG
  saContext: Pointer   // IPSEC_SA_CONTEXT0** out
): DWORD; stdcall;
  external 'fwpuclnt.dll' name 'IPsecSaContextGetById0';

result := DllCall("fwpuclnt\IPsecSaContextGetById0"
    , "Ptr", engineHandle   ; FWPM_ENGINE_HANDLE
    , "Int64", id   ; ULONGLONG
    , "Ptr", saContext   ; IPSEC_SA_CONTEXT0** out
    , "UInt")   ; return: DWORD

●IPsecSaContextGetById0(engineHandle, id, saContext) = DLL("fwpuclnt.dll", "dword IPsecSaContextGetById0(void*, qword, void*)")
# 呼び出し: IPsecSaContextGetById0(engineHandle, id, saContext)
# engineHandle : FWPM_ENGINE_HANDLE -> "void*"
# id : ULONGLONG -> "qword"
# saContext : IPSEC_SA_CONTEXT0** 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)。