SnmpGetPduData

// wsnmp32.dll
#include <windows.h>

DWORD SnmpGetPduData(
    INT_PTR PDU,
    SNMP_PDU_TYPE* PDU_type,
    INT* request_id,
    SNMP_ERROR* error_status,
    INT* error_index,
    INT_PTR* varbindlist
);

<DllImport("wsnmp32.dll", ExactSpelling:=True)>
Public Shared Function SnmpGetPduData(
    PDU As IntPtr,   ' INT_PTR
    ByRef PDU_type As UInteger,   ' SNMP_PDU_TYPE* in/out
    ByRef request_id As Integer,   ' INT* in/out
    ByRef error_status As UInteger,   ' SNMP_ERROR* in/out
    ByRef error_index As Integer,   ' INT* in/out
    ByRef varbindlist As IntPtr   ' INT_PTR* in/out
) As UInteger
End Function

' PDU : INT_PTR
' PDU_type : SNMP_PDU_TYPE* in/out
' request_id : INT* in/out
' error_status : SNMP_ERROR* in/out
' error_index : INT* in/out
' varbindlist : INT_PTR* in/out
Declare PtrSafe Function SnmpGetPduData Lib "wsnmp32" ( _
    ByVal PDU As LongPtr, _
    ByRef PDU_type As Long, _
    ByRef request_id As Long, _
    ByRef error_status As Long, _
    ByRef error_index As Long, _
    ByRef varbindlist 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

SnmpGetPduData = ctypes.windll.wsnmp32.SnmpGetPduData
SnmpGetPduData.restype = wintypes.DWORD
SnmpGetPduData.argtypes = [
    ctypes.c_ssize_t,  # PDU : INT_PTR
    ctypes.c_void_p,  # PDU_type : SNMP_PDU_TYPE* in/out
    ctypes.POINTER(ctypes.c_int),  # request_id : INT* in/out
    ctypes.c_void_p,  # error_status : SNMP_ERROR* in/out
    ctypes.POINTER(ctypes.c_int),  # error_index : INT* in/out
    ctypes.POINTER(ctypes.c_ssize_t),  # varbindlist : INT_PTR* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wsnmp32.dll')
SnmpGetPduData = Fiddle::Function.new(
  lib['SnmpGetPduData'],
  [
    Fiddle::TYPE_INTPTR_T,  # PDU : INT_PTR
    Fiddle::TYPE_VOIDP,  # PDU_type : SNMP_PDU_TYPE* in/out
    Fiddle::TYPE_VOIDP,  # request_id : INT* in/out
    Fiddle::TYPE_VOIDP,  # error_status : SNMP_ERROR* in/out
    Fiddle::TYPE_VOIDP,  # error_index : INT* in/out
    Fiddle::TYPE_VOIDP,  # varbindlist : INT_PTR* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wsnmp32")]
extern "system" {
    fn SnmpGetPduData(
        PDU: isize,  // INT_PTR
        PDU_type: *mut u32,  // SNMP_PDU_TYPE* in/out
        request_id: *mut i32,  // INT* in/out
        error_status: *mut u32,  // SNMP_ERROR* in/out
        error_index: *mut i32,  // INT* in/out
        varbindlist: *mut isize  // INT_PTR* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wsnmp32.dll")]
public static extern uint SnmpGetPduData(IntPtr PDU, ref uint PDU_type, ref int request_id, ref uint error_status, ref int error_index, ref IntPtr varbindlist);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wsnmp32_SnmpGetPduData' -Namespace Win32 -PassThru
# $api::SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)

#uselib "wsnmp32.dll"
#func global SnmpGetPduData "SnmpGetPduData" sptr, sptr, sptr, sptr, sptr, sptr
; SnmpGetPduData PDU, varptr(PDU_type), varptr(request_id), varptr(error_status), varptr(error_index), varptr(varbindlist)   ; 戻り値は stat
; PDU : INT_PTR -> "sptr"
; PDU_type : SNMP_PDU_TYPE* in/out -> "sptr"
; request_id : INT* in/out -> "sptr"
; error_status : SNMP_ERROR* in/out -> "sptr"
; error_index : INT* in/out -> "sptr"
; varbindlist : INT_PTR* in/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。

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

var (
	wsnmp32 = windows.NewLazySystemDLL("wsnmp32.dll")
	procSnmpGetPduData = wsnmp32.NewProc("SnmpGetPduData")
)

// PDU (INT_PTR), PDU_type (SNMP_PDU_TYPE* in/out), request_id (INT* in/out), error_status (SNMP_ERROR* in/out), error_index (INT* in/out), varbindlist (INT_PTR* in/out)
r1, _, err := procSnmpGetPduData.Call(
	uintptr(PDU),
	uintptr(PDU_type),
	uintptr(request_id),
	uintptr(error_status),
	uintptr(error_index),
	uintptr(varbindlist),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SnmpGetPduData(
  PDU: NativeInt;   // INT_PTR
  PDU_type: Pointer;   // SNMP_PDU_TYPE* in/out
  request_id: Pointer;   // INT* in/out
  error_status: Pointer;   // SNMP_ERROR* in/out
  error_index: Pointer;   // INT* in/out
  varbindlist: Pointer   // INT_PTR* in/out
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpGetPduData';

result := DllCall("wsnmp32\SnmpGetPduData"
    , "Ptr", PDU   ; INT_PTR
    , "Ptr", PDU_type   ; SNMP_PDU_TYPE* in/out
    , "Ptr", request_id   ; INT* in/out
    , "Ptr", error_status   ; SNMP_ERROR* in/out
    , "Ptr", error_index   ; INT* in/out
    , "Ptr", varbindlist   ; INT_PTR* in/out
    , "UInt")   ; return: DWORD

●SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist) = DLL("wsnmp32.dll", "dword SnmpGetPduData(int, void*, void*, void*, void*, void*)")
# 呼び出し: SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
# PDU : INT_PTR -> "int"
# PDU_type : SNMP_PDU_TYPE* in/out -> "void*"
# request_id : INT* in/out -> "void*"
# error_status : SNMP_ERROR* in/out -> "void*"
# error_index : INT* in/out -> "void*"
# varbindlist : INT_PTR* in/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)。

const std = @import("std");

extern "wsnmp32" fn SnmpGetPduData(
    PDU: isize, // INT_PTR
    PDU_type: [*c]u32, // SNMP_PDU_TYPE* in/out
    request_id: [*c]i32, // INT* in/out
    error_status: [*c]u32, // SNMP_ERROR* in/out
    error_index: [*c]i32, // INT* in/out
    varbindlist: [*c]isize // INT_PTR* in/out
) callconv(std.os.windows.WINAPI) u32;

proc SnmpGetPduData(
    PDU: int,  # INT_PTR
    PDU_type: ptr uint32,  # SNMP_PDU_TYPE* in/out
    request_id: ptr int32,  # INT* in/out
    error_status: ptr uint32,  # SNMP_ERROR* in/out
    error_index: ptr int32,  # INT* in/out
    varbindlist: ptr int  # INT_PTR* in/out
): uint32 {.importc: "SnmpGetPduData", stdcall, dynlib: "wsnmp32.dll".}

pragma(lib, "wsnmp32");
extern(Windows)
uint SnmpGetPduData(
    ptrdiff_t PDU,   // INT_PTR
    uint* PDU_type,   // SNMP_PDU_TYPE* in/out
    int* request_id,   // INT* in/out
    uint* error_status,   // SNMP_ERROR* in/out
    int* error_index,   // INT* in/out
    ptrdiff_t* varbindlist   // INT_PTR* in/out
);

ccall((:SnmpGetPduData, "wsnmp32.dll"), stdcall, UInt32,
      (Int, Ptr{UInt32}, Ptr{Int32}, Ptr{UInt32}, Ptr{Int32}, Ptr{Int}),
      PDU, PDU_type, request_id, error_status, error_index, varbindlist)
# PDU : INT_PTR -> Int
# PDU_type : SNMP_PDU_TYPE* in/out -> Ptr{UInt32}
# request_id : INT* in/out -> Ptr{Int32}
# error_status : SNMP_ERROR* in/out -> Ptr{UInt32}
# error_index : INT* in/out -> Ptr{Int32}
# varbindlist : INT_PTR* in/out -> Ptr{Int}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t SnmpGetPduData(
    intptr_t PDU,
    uint32_t* PDU_type,
    int32_t* request_id,
    uint32_t* error_status,
    int32_t* error_index,
    intptr_t* varbindlist);
]]
local wsnmp32 = ffi.load("wsnmp32")
-- wsnmp32.SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
-- PDU : INT_PTR
-- PDU_type : SNMP_PDU_TYPE* in/out
-- request_id : INT* in/out
-- error_status : SNMP_ERROR* in/out
-- error_index : INT* in/out
-- varbindlist : INT_PTR* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('wsnmp32.dll');
const SnmpGetPduData = lib.func('__stdcall', 'SnmpGetPduData', 'uint32_t', ['intptr_t', 'uint32_t *', 'int32_t *', 'uint32_t *', 'int32_t *', 'intptr_t *']);
// SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
// PDU : INT_PTR -> 'intptr_t'
// PDU_type : SNMP_PDU_TYPE* in/out -> 'uint32_t *'
// request_id : INT* in/out -> 'int32_t *'
// error_status : SNMP_ERROR* in/out -> 'uint32_t *'
// error_index : INT* in/out -> 'int32_t *'
// varbindlist : INT_PTR* in/out -> 'intptr_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("wsnmp32.dll", {
  SnmpGetPduData: { parameters: ["isize", "pointer", "pointer", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
// PDU : INT_PTR -> "isize"
// PDU_type : SNMP_PDU_TYPE* in/out -> "pointer"
// request_id : INT* in/out -> "pointer"
// error_status : SNMP_ERROR* in/out -> "pointer"
// error_index : INT* in/out -> "pointer"
// varbindlist : INT_PTR* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t SnmpGetPduData(
    intptr_t PDU,
    uint32_t* PDU_type,
    int32_t* request_id,
    uint32_t* error_status,
    int32_t* error_index,
    intptr_t* varbindlist);
C, "wsnmp32.dll");
// $ffi->SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist);
// PDU : INT_PTR
// PDU_type : SNMP_PDU_TYPE* in/out
// request_id : INT* in/out
// error_status : SNMP_ERROR* in/out
// error_index : INT* in/out
// varbindlist : INT_PTR* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Wsnmp32 extends StdCallLibrary {
    Wsnmp32 INSTANCE = Native.load("wsnmp32", Wsnmp32.class);
    int SnmpGetPduData(
        long PDU,   // INT_PTR
        IntByReference PDU_type,   // SNMP_PDU_TYPE* in/out
        IntByReference request_id,   // INT* in/out
        IntByReference error_status,   // SNMP_ERROR* in/out
        IntByReference error_index,   // INT* in/out
        LongByReference varbindlist   // INT_PTR* in/out
    );
}

@[Link("wsnmp32")]
lib Libwsnmp32
  fun SnmpGetPduData = SnmpGetPduData(
    PDU : LibC::SSizeT,   # INT_PTR
    PDU_type : UInt32*,   # SNMP_PDU_TYPE* in/out
    request_id : Int32*,   # INT* in/out
    error_status : UInt32*,   # SNMP_ERROR* in/out
    error_index : Int32*,   # INT* in/out
    varbindlist : LibC::SSizeT*   # INT_PTR* in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SnmpGetPduDataNative = Uint32 Function(IntPtr, Pointer<Uint32>, Pointer<Int32>, Pointer<Uint32>, Pointer<Int32>, Pointer<IntPtr>);
typedef SnmpGetPduDataDart = int Function(int, Pointer<Uint32>, Pointer<Int32>, Pointer<Uint32>, Pointer<Int32>, Pointer<IntPtr>);
final SnmpGetPduData = DynamicLibrary.open('wsnmp32.dll')
    .lookupFunction<SnmpGetPduDataNative, SnmpGetPduDataDart>('SnmpGetPduData');
// PDU : INT_PTR -> IntPtr
// PDU_type : SNMP_PDU_TYPE* in/out -> Pointer<Uint32>
// request_id : INT* in/out -> Pointer<Int32>
// error_status : SNMP_ERROR* in/out -> Pointer<Uint32>
// error_index : INT* in/out -> Pointer<Int32>
// varbindlist : INT_PTR* in/out -> Pointer<IntPtr>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SnmpGetPduData(
  PDU: NativeInt;   // INT_PTR
  PDU_type: Pointer;   // SNMP_PDU_TYPE* in/out
  request_id: Pointer;   // INT* in/out
  error_status: Pointer;   // SNMP_ERROR* in/out
  error_index: Pointer;   // INT* in/out
  varbindlist: Pointer   // INT_PTR* in/out
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpGetPduData';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SnmpGetPduData"
  c_SnmpGetPduData :: CIntPtr -> Ptr Word32 -> Ptr Int32 -> Ptr Word32 -> Ptr Int32 -> Ptr CIntPtr -> IO Word32
-- PDU : INT_PTR -> CIntPtr
-- PDU_type : SNMP_PDU_TYPE* in/out -> Ptr Word32
-- request_id : INT* in/out -> Ptr Int32
-- error_status : SNMP_ERROR* in/out -> Ptr Word32
-- error_index : INT* in/out -> Ptr Int32
-- varbindlist : INT_PTR* in/out -> Ptr CIntPtr
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let snmpgetpdudata =
  foreign "SnmpGetPduData"
    (intptr_t @-> (ptr uint32_t) @-> (ptr int32_t) @-> (ptr uint32_t) @-> (ptr int32_t) @-> (ptr intptr_t) @-> returning uint32_t)
(* PDU : INT_PTR -> intptr_t *)
(* PDU_type : SNMP_PDU_TYPE* in/out -> (ptr uint32_t) *)
(* request_id : INT* in/out -> (ptr int32_t) *)
(* error_status : SNMP_ERROR* in/out -> (ptr uint32_t) *)
(* error_index : INT* in/out -> (ptr int32_t) *)
(* varbindlist : INT_PTR* in/out -> (ptr intptr_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library wsnmp32 (t "wsnmp32.dll"))
(cffi:use-foreign-library wsnmp32)

(cffi:defcfun ("SnmpGetPduData" snmp-get-pdu-data :convention :stdcall) :uint32
  (pdu :int64)   ; INT_PTR
  (pdu-type :pointer)   ; SNMP_PDU_TYPE* in/out
  (request-id :pointer)   ; INT* in/out
  (error-status :pointer)   ; SNMP_ERROR* in/out
  (error-index :pointer)   ; INT* in/out
  (varbindlist :pointer))   ; INT_PTR* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SnmpGetPduData = Win32::API::More->new('wsnmp32',
    'DWORD SnmpGetPduData(LPARAM PDU, LPVOID PDU_type, LPVOID request_id, LPVOID error_status, LPVOID error_index, LPVOID varbindlist)');
# my $ret = $SnmpGetPduData->Call($PDU, $PDU_type, $request_id, $error_status, $error_index, $varbindlist);
# PDU : INT_PTR -> LPARAM
# PDU_type : SNMP_PDU_TYPE* in/out -> LPVOID
# request_id : INT* in/out -> LPVOID
# error_status : SNMP_ERROR* in/out -> LPVOID
# error_index : INT* in/out -> LPVOID
# varbindlist : INT_PTR* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。