inet_pton

// WS2_32.dll
#include <windows.h>

INT inet_pton(
    INT Family,
    LPCSTR pszAddrString,
    void* pAddrBuf
);

<DllImport("WS2_32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function inet_pton(
    Family As Integer,   ' INT
    <MarshalAs(UnmanagedType.LPStr)> pszAddrString As String,   ' LPCSTR
    pAddrBuf As IntPtr   ' void* out
) As Integer
End Function

' Family : INT
' pszAddrString : LPCSTR
' pAddrBuf : void* out
Declare PtrSafe Function inet_pton Lib "ws2_32" ( _
    ByVal Family As Long, _
    ByVal pszAddrString As String, _
    ByVal pAddrBuf 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

inet_pton = ctypes.windll.ws2_32.inet_pton
inet_pton.restype = ctypes.c_int
inet_pton.argtypes = [
    ctypes.c_int,  # Family : INT
    wintypes.LPCSTR,  # pszAddrString : LPCSTR
    ctypes.POINTER(None),  # pAddrBuf : void* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
inet_pton = Fiddle::Function.new(
  lib['inet_pton'],
  [
    Fiddle::TYPE_INT,  # Family : INT
    Fiddle::TYPE_VOIDP,  # pszAddrString : LPCSTR
    Fiddle::TYPE_VOIDP,  # pAddrBuf : void* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn inet_pton(
        Family: i32,  // INT
        pszAddrString: *const u8,  // LPCSTR
        pAddrBuf: *mut ()  // void* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", SetLastError = true)]
public static extern int inet_pton(int Family, [MarshalAs(UnmanagedType.LPStr)] string pszAddrString, IntPtr pAddrBuf);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_inet_pton' -Namespace Win32 -PassThru
# $api::inet_pton(Family, pszAddrString, pAddrBuf)

#uselib "WS2_32.dll"
#func global inet_pton "inet_pton" sptr, sptr, sptr
; inet_pton Family, pszAddrString, pAddrBuf   ; 戻り値は stat
; Family : INT -> "sptr"
; pszAddrString : LPCSTR -> "sptr"
; pAddrBuf : void* 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 "WS2_32.dll"
#cfunc global inet_pton "inet_pton" int, str, sptr
; res = inet_pton(Family, pszAddrString, pAddrBuf)
; Family : INT -> "int"
; pszAddrString : LPCSTR -> "str"
; pAddrBuf : void* out -> "sptr"

; INT inet_pton(INT Family, LPCSTR pszAddrString, void* pAddrBuf)
#uselib "WS2_32.dll"
#cfunc global inet_pton "inet_pton" int, str, intptr
; res = inet_pton(Family, pszAddrString, pAddrBuf)
; Family : INT -> "int"
; pszAddrString : LPCSTR -> "str"
; pAddrBuf : void* out -> "intptr"

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

var (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procinet_pton = ws2_32.NewProc("inet_pton")
)

// Family (INT), pszAddrString (LPCSTR), pAddrBuf (void* out)
r1, _, err := procinet_pton.Call(
	uintptr(Family),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszAddrString))),
	uintptr(pAddrBuf),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function inet_pton(
  Family: Integer;   // INT
  pszAddrString: PAnsiChar;   // LPCSTR
  pAddrBuf: Pointer   // void* out
): Integer; stdcall;
  external 'WS2_32.dll' name 'inet_pton';

result := DllCall("WS2_32\inet_pton"
    , "Int", Family   ; INT
    , "AStr", pszAddrString   ; LPCSTR
    , "Ptr", pAddrBuf   ; void* out
    , "Int")   ; return: INT

●inet_pton(Family, pszAddrString, pAddrBuf) = DLL("WS2_32.dll", "int inet_pton(int, char*, void*)")
# 呼び出し: inet_pton(Family, pszAddrString, pAddrBuf)
# Family : INT -> "int"
# pszAddrString : LPCSTR -> "char*"
# pAddrBuf : void* 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 "ws2_32" fn inet_pton(
    Family: i32, // INT
    pszAddrString: [*c]const u8, // LPCSTR
    pAddrBuf: ?*anyopaque // void* out
) callconv(std.os.windows.WINAPI) i32;

proc inet_pton(
    Family: int32,  # INT
    pszAddrString: cstring,  # LPCSTR
    pAddrBuf: pointer  # void* out
): int32 {.importc: "inet_pton", stdcall, dynlib: "WS2_32.dll".}

pragma(lib, "ws2_32");
extern(Windows)
int inet_pton(
    int Family,   // INT
    const(char)* pszAddrString,   // LPCSTR
    void* pAddrBuf   // void* out
);

ccall((:inet_pton, "WS2_32.dll"), stdcall, Int32,
      (Int32, Cstring, Ptr{Cvoid}),
      Family, pszAddrString, pAddrBuf)
# Family : INT -> Int32
# pszAddrString : LPCSTR -> Cstring
# pAddrBuf : void* out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t inet_pton(
    int32_t Family,
    const char* pszAddrString,
    void* pAddrBuf);
]]
local ws2_32 = ffi.load("ws2_32")
-- ws2_32.inet_pton(Family, pszAddrString, pAddrBuf)
-- Family : INT
-- pszAddrString : LPCSTR
-- pAddrBuf : void* 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('WS2_32.dll');
const inet_pton = lib.func('__stdcall', 'inet_pton', 'int32_t', ['int32_t', 'str', 'void *']);
// inet_pton(Family, pszAddrString, pAddrBuf)
// Family : INT -> 'int32_t'
// pszAddrString : LPCSTR -> 'str'
// pAddrBuf : void* out -> 'void *'
// 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("WS2_32.dll", {
  inet_pton: { parameters: ["i32", "buffer", "pointer"], result: "i32" },
});
// lib.symbols.inet_pton(Family, pszAddrString, pAddrBuf)
// Family : INT -> "i32"
// pszAddrString : LPCSTR -> "buffer"
// pAddrBuf : void* 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
int32_t inet_pton(
    int32_t Family,
    const char* pszAddrString,
    void* pAddrBuf);
C, "WS2_32.dll");
// $ffi->inet_pton(Family, pszAddrString, pAddrBuf);
// Family : INT
// pszAddrString : LPCSTR
// pAddrBuf : void* 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 Ws2_32 extends StdCallLibrary {
    Ws2_32 INSTANCE = Native.load("ws2_32", Ws2_32.class);
    int inet_pton(
        int Family,   // INT
        String pszAddrString,   // LPCSTR
        Pointer pAddrBuf   // void* out
    );
}

@[Link("ws2_32")]
lib LibWS2_32
  fun inet_pton = inet_pton(
    Family : Int32,   # INT
    pszAddrString : UInt8*,   # LPCSTR
    pAddrBuf : Void*   # void* out
  ) : Int32
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 inet_ptonNative = Int32 Function(Int32, Pointer<Utf8>, Pointer<Void>);
typedef inet_ptonDart = int Function(int, Pointer<Utf8>, Pointer<Void>);
final inet_pton = DynamicLibrary.open('WS2_32.dll')
    .lookupFunction<inet_ptonNative, inet_ptonDart>('inet_pton');
// Family : INT -> Int32
// pszAddrString : LPCSTR -> Pointer<Utf8>
// pAddrBuf : void* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function inet_pton(
  Family: Integer;   // INT
  pszAddrString: PAnsiChar;   // LPCSTR
  pAddrBuf: Pointer   // void* out
): Integer; stdcall;
  external 'WS2_32.dll' name 'inet_pton';

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

foreign import stdcall safe "inet_pton"
  c_inet_pton :: Int32 -> CString -> Ptr () -> IO Int32
-- Family : INT -> Int32
-- pszAddrString : LPCSTR -> CString
-- pAddrBuf : void* out -> Ptr ()
-- 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 inet_pton =
  foreign "inet_pton"
    (int32_t @-> string @-> (ptr void) @-> returning int32_t)
(* Family : INT -> int32_t *)
(* pszAddrString : LPCSTR -> string *)
(* pAddrBuf : void* out -> (ptr void) *)
(* 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 ws2_32 (t "WS2_32.dll"))
(cffi:use-foreign-library ws2_32)

(cffi:defcfun ("inet_pton" inet-pton :convention :stdcall) :int32
  (family :int32)   ; INT
  (psz-addr-string :string)   ; LPCSTR
  (p-addr-buf :pointer))   ; void* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $inet_pton = Win32::API::More->new('WS2_32',
    'int inet_pton(int Family, LPCSTR pszAddrString, LPVOID pAddrBuf)');
# my $ret = $inet_pton->Call($Family, $pszAddrString, $pAddrBuf);
# Family : INT -> int
# pszAddrString : LPCSTR -> LPCSTR
# pAddrBuf : void* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。