GetAddressByNameA

// MSWSOCK.dll  (ANSI / -A)
#include <windows.h>

INT GetAddressByNameA(
    DWORD dwNameSpace,
    GUID* lpServiceType,
    LPSTR lpServiceName,   // optional
    INT* lpiProtocols,   // optional
    DWORD dwResolution,
    SERVICE_ASYNC_INFO* lpServiceAsyncInfo,   // optional
    void* lpCsaddrBuffer,
    DWORD* lpdwBufferLength,
    LPSTR lpAliasBuffer,   // optional
    DWORD* lpdwAliasBufferLength
);

<DllImport("MSWSOCK.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetAddressByNameA(
    dwNameSpace As UInteger,   ' DWORD
    ByRef lpServiceType As Guid,   ' GUID*
    <MarshalAs(UnmanagedType.LPStr)> lpServiceName As String,   ' LPSTR optional
    lpiProtocols As IntPtr,   ' INT* optional
    dwResolution As UInteger,   ' DWORD
    lpServiceAsyncInfo As IntPtr,   ' SERVICE_ASYNC_INFO* optional
    lpCsaddrBuffer As IntPtr,   ' void* out
    ByRef lpdwBufferLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPStr)> lpAliasBuffer As System.Text.StringBuilder,   ' LPSTR optional, in/out
    ByRef lpdwAliasBufferLength As UInteger   ' DWORD* in/out
) As Integer
End Function

' dwNameSpace : DWORD
' lpServiceType : GUID*
' lpServiceName : LPSTR optional
' lpiProtocols : INT* optional
' dwResolution : DWORD
' lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional
' lpCsaddrBuffer : void* out
' lpdwBufferLength : DWORD* in/out
' lpAliasBuffer : LPSTR optional, in/out
' lpdwAliasBufferLength : DWORD* in/out
Declare PtrSafe Function GetAddressByNameA Lib "mswsock" ( _
    ByVal dwNameSpace As Long, _
    ByVal lpServiceType As LongPtr, _
    ByVal lpServiceName As String, _
    ByVal lpiProtocols As LongPtr, _
    ByVal dwResolution As Long, _
    ByVal lpServiceAsyncInfo As LongPtr, _
    ByVal lpCsaddrBuffer As LongPtr, _
    ByRef lpdwBufferLength As Long, _
    ByVal lpAliasBuffer As String, _
    ByRef lpdwAliasBufferLength 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

GetAddressByNameA = ctypes.windll.mswsock.GetAddressByNameA
GetAddressByNameA.restype = ctypes.c_int
GetAddressByNameA.argtypes = [
    wintypes.DWORD,  # dwNameSpace : DWORD
    ctypes.c_void_p,  # lpServiceType : GUID*
    wintypes.LPCSTR,  # lpServiceName : LPSTR optional
    ctypes.POINTER(ctypes.c_int),  # lpiProtocols : INT* optional
    wintypes.DWORD,  # dwResolution : DWORD
    ctypes.c_void_p,  # lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional
    ctypes.POINTER(None),  # lpCsaddrBuffer : void* out
    ctypes.POINTER(wintypes.DWORD),  # lpdwBufferLength : DWORD* in/out
    wintypes.LPSTR,  # lpAliasBuffer : LPSTR optional, in/out
    ctypes.POINTER(wintypes.DWORD),  # lpdwAliasBufferLength : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSWSOCK.dll')
GetAddressByNameA = Fiddle::Function.new(
  lib['GetAddressByNameA'],
  [
    -Fiddle::TYPE_INT,  # dwNameSpace : DWORD
    Fiddle::TYPE_VOIDP,  # lpServiceType : GUID*
    Fiddle::TYPE_VOIDP,  # lpServiceName : LPSTR optional
    Fiddle::TYPE_VOIDP,  # lpiProtocols : INT* optional
    -Fiddle::TYPE_INT,  # dwResolution : DWORD
    Fiddle::TYPE_VOIDP,  # lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional
    Fiddle::TYPE_VOIDP,  # lpCsaddrBuffer : void* out
    Fiddle::TYPE_VOIDP,  # lpdwBufferLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # lpAliasBuffer : LPSTR optional, in/out
    Fiddle::TYPE_VOIDP,  # lpdwAliasBufferLength : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mswsock")]
extern "system" {
    fn GetAddressByNameA(
        dwNameSpace: u32,  // DWORD
        lpServiceType: *mut GUID,  // GUID*
        lpServiceName: *mut u8,  // LPSTR optional
        lpiProtocols: *mut i32,  // INT* optional
        dwResolution: u32,  // DWORD
        lpServiceAsyncInfo: *mut SERVICE_ASYNC_INFO,  // SERVICE_ASYNC_INFO* optional
        lpCsaddrBuffer: *mut (),  // void* out
        lpdwBufferLength: *mut u32,  // DWORD* in/out
        lpAliasBuffer: *mut u8,  // LPSTR optional, in/out
        lpdwAliasBufferLength: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSWSOCK.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern int GetAddressByNameA(uint dwNameSpace, ref Guid lpServiceType, [MarshalAs(UnmanagedType.LPStr)] string lpServiceName, IntPtr lpiProtocols, uint dwResolution, IntPtr lpServiceAsyncInfo, IntPtr lpCsaddrBuffer, ref uint lpdwBufferLength, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpAliasBuffer, ref uint lpdwAliasBufferLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSWSOCK_GetAddressByNameA' -Namespace Win32 -PassThru
# $api::GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength)

#uselib "MSWSOCK.dll"
#func global GetAddressByNameA "GetAddressByNameA" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; GetAddressByNameA dwNameSpace, varptr(lpServiceType), lpServiceName, varptr(lpiProtocols), dwResolution, varptr(lpServiceAsyncInfo), lpCsaddrBuffer, varptr(lpdwBufferLength), varptr(lpAliasBuffer), varptr(lpdwAliasBufferLength)   ; 戻り値は stat
; dwNameSpace : DWORD -> "sptr"
; lpServiceType : GUID* -> "sptr"
; lpServiceName : LPSTR optional -> "sptr"
; lpiProtocols : INT* optional -> "sptr"
; dwResolution : DWORD -> "sptr"
; lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> "sptr"
; lpCsaddrBuffer : void* out -> "sptr"
; lpdwBufferLength : DWORD* in/out -> "sptr"
; lpAliasBuffer : LPSTR optional, in/out -> "sptr"
; lpdwAliasBufferLength : DWORD* 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 (
	mswsock = windows.NewLazySystemDLL("MSWSOCK.dll")
	procGetAddressByNameA = mswsock.NewProc("GetAddressByNameA")
)

// dwNameSpace (DWORD), lpServiceType (GUID*), lpServiceName (LPSTR optional), lpiProtocols (INT* optional), dwResolution (DWORD), lpServiceAsyncInfo (SERVICE_ASYNC_INFO* optional), lpCsaddrBuffer (void* out), lpdwBufferLength (DWORD* in/out), lpAliasBuffer (LPSTR optional, in/out), lpdwAliasBufferLength (DWORD* in/out)
r1, _, err := procGetAddressByNameA.Call(
	uintptr(dwNameSpace),
	uintptr(lpServiceType),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpServiceName))),
	uintptr(lpiProtocols),
	uintptr(dwResolution),
	uintptr(lpServiceAsyncInfo),
	uintptr(lpCsaddrBuffer),
	uintptr(lpdwBufferLength),
	uintptr(lpAliasBuffer),
	uintptr(lpdwAliasBufferLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetAddressByNameA(
  dwNameSpace: DWORD;   // DWORD
  lpServiceType: PGUID;   // GUID*
  lpServiceName: PAnsiChar;   // LPSTR optional
  lpiProtocols: Pointer;   // INT* optional
  dwResolution: DWORD;   // DWORD
  lpServiceAsyncInfo: Pointer;   // SERVICE_ASYNC_INFO* optional
  lpCsaddrBuffer: Pointer;   // void* out
  lpdwBufferLength: Pointer;   // DWORD* in/out
  lpAliasBuffer: PAnsiChar;   // LPSTR optional, in/out
  lpdwAliasBufferLength: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'MSWSOCK.dll' name 'GetAddressByNameA';

result := DllCall("MSWSOCK\GetAddressByNameA"
    , "UInt", dwNameSpace   ; DWORD
    , "Ptr", lpServiceType   ; GUID*
    , "AStr", lpServiceName   ; LPSTR optional
    , "Ptr", lpiProtocols   ; INT* optional
    , "UInt", dwResolution   ; DWORD
    , "Ptr", lpServiceAsyncInfo   ; SERVICE_ASYNC_INFO* optional
    , "Ptr", lpCsaddrBuffer   ; void* out
    , "Ptr", lpdwBufferLength   ; DWORD* in/out
    , "Ptr", lpAliasBuffer   ; LPSTR optional, in/out
    , "Ptr", lpdwAliasBufferLength   ; DWORD* in/out
    , "Int")   ; return: INT

●GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength) = DLL("MSWSOCK.dll", "int GetAddressByNameA(dword, void*, char*, void*, dword, void*, void*, void*, char*, void*)")
# 呼び出し: GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength)
# dwNameSpace : DWORD -> "dword"
# lpServiceType : GUID* -> "void*"
# lpServiceName : LPSTR optional -> "char*"
# lpiProtocols : INT* optional -> "void*"
# dwResolution : DWORD -> "dword"
# lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> "void*"
# lpCsaddrBuffer : void* out -> "void*"
# lpdwBufferLength : DWORD* in/out -> "void*"
# lpAliasBuffer : LPSTR optional, in/out -> "char*"
# lpdwAliasBufferLength : DWORD* 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 "mswsock" fn GetAddressByNameA(
    dwNameSpace: u32, // DWORD
    lpServiceType: [*c]GUID, // GUID*
    lpServiceName: [*c]const u8, // LPSTR optional
    lpiProtocols: [*c]i32, // INT* optional
    dwResolution: u32, // DWORD
    lpServiceAsyncInfo: [*c]SERVICE_ASYNC_INFO, // SERVICE_ASYNC_INFO* optional
    lpCsaddrBuffer: ?*anyopaque, // void* out
    lpdwBufferLength: [*c]u32, // DWORD* in/out
    lpAliasBuffer: [*c]u8, // LPSTR optional, in/out
    lpdwAliasBufferLength: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) i32;

proc GetAddressByNameA(
    dwNameSpace: uint32,  # DWORD
    lpServiceType: ptr GUID,  # GUID*
    lpServiceName: cstring,  # LPSTR optional
    lpiProtocols: ptr int32,  # INT* optional
    dwResolution: uint32,  # DWORD
    lpServiceAsyncInfo: ptr SERVICE_ASYNC_INFO,  # SERVICE_ASYNC_INFO* optional
    lpCsaddrBuffer: pointer,  # void* out
    lpdwBufferLength: ptr uint32,  # DWORD* in/out
    lpAliasBuffer: ptr char,  # LPSTR optional, in/out
    lpdwAliasBufferLength: ptr uint32  # DWORD* in/out
): int32 {.importc: "GetAddressByNameA", stdcall, dynlib: "MSWSOCK.dll".}

pragma(lib, "mswsock");
extern(Windows)
int GetAddressByNameA(
    uint dwNameSpace,   // DWORD
    GUID* lpServiceType,   // GUID*
    const(char)* lpServiceName,   // LPSTR optional
    int* lpiProtocols,   // INT* optional
    uint dwResolution,   // DWORD
    SERVICE_ASYNC_INFO* lpServiceAsyncInfo,   // SERVICE_ASYNC_INFO* optional
    void* lpCsaddrBuffer,   // void* out
    uint* lpdwBufferLength,   // DWORD* in/out
    char* lpAliasBuffer,   // LPSTR optional, in/out
    uint* lpdwAliasBufferLength   // DWORD* in/out
);

ccall((:GetAddressByNameA, "MSWSOCK.dll"), stdcall, Int32,
      (UInt32, Ptr{GUID}, Cstring, Ptr{Int32}, UInt32, Ptr{SERVICE_ASYNC_INFO}, Ptr{Cvoid}, Ptr{UInt32}, Ptr{UInt8}, Ptr{UInt32}),
      dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength)
# dwNameSpace : DWORD -> UInt32
# lpServiceType : GUID* -> Ptr{GUID}
# lpServiceName : LPSTR optional -> Cstring
# lpiProtocols : INT* optional -> Ptr{Int32}
# dwResolution : DWORD -> UInt32
# lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> Ptr{SERVICE_ASYNC_INFO}
# lpCsaddrBuffer : void* out -> Ptr{Cvoid}
# lpdwBufferLength : DWORD* in/out -> Ptr{UInt32}
# lpAliasBuffer : LPSTR optional, in/out -> Ptr{UInt8}
# lpdwAliasBufferLength : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetAddressByNameA(
    uint32_t dwNameSpace,
    void* lpServiceType,
    const char* lpServiceName,
    int32_t* lpiProtocols,
    uint32_t dwResolution,
    void* lpServiceAsyncInfo,
    void* lpCsaddrBuffer,
    uint32_t* lpdwBufferLength,
    char* lpAliasBuffer,
    uint32_t* lpdwAliasBufferLength);
]]
local mswsock = ffi.load("mswsock")
-- mswsock.GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength)
-- dwNameSpace : DWORD
-- lpServiceType : GUID*
-- lpServiceName : LPSTR optional
-- lpiProtocols : INT* optional
-- dwResolution : DWORD
-- lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional
-- lpCsaddrBuffer : void* out
-- lpdwBufferLength : DWORD* in/out
-- lpAliasBuffer : LPSTR optional, in/out
-- lpdwAliasBufferLength : DWORD* 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('MSWSOCK.dll');
const GetAddressByNameA = lib.func('__stdcall', 'GetAddressByNameA', 'int32_t', ['uint32_t', 'void *', 'str', 'int32_t *', 'uint32_t', 'void *', 'void *', 'uint32_t *', 'char *', 'uint32_t *']);
// GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength)
// dwNameSpace : DWORD -> 'uint32_t'
// lpServiceType : GUID* -> 'void *'
// lpServiceName : LPSTR optional -> 'str'
// lpiProtocols : INT* optional -> 'int32_t *'
// dwResolution : DWORD -> 'uint32_t'
// lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> 'void *'
// lpCsaddrBuffer : void* out -> 'void *'
// lpdwBufferLength : DWORD* in/out -> 'uint32_t *'
// lpAliasBuffer : LPSTR optional, in/out -> 'char *'
// lpdwAliasBufferLength : DWORD* in/out -> 'uint32_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("MSWSOCK.dll", {
  GetAddressByNameA: { parameters: ["u32", "pointer", "buffer", "pointer", "u32", "pointer", "pointer", "pointer", "buffer", "pointer"], result: "i32" },
});
// lib.symbols.GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength)
// dwNameSpace : DWORD -> "u32"
// lpServiceType : GUID* -> "pointer"
// lpServiceName : LPSTR optional -> "buffer"
// lpiProtocols : INT* optional -> "pointer"
// dwResolution : DWORD -> "u32"
// lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> "pointer"
// lpCsaddrBuffer : void* out -> "pointer"
// lpdwBufferLength : DWORD* in/out -> "pointer"
// lpAliasBuffer : LPSTR optional, in/out -> "buffer"
// lpdwAliasBufferLength : DWORD* in/out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t GetAddressByNameA(
    uint32_t dwNameSpace,
    void* lpServiceType,
    const char* lpServiceName,
    int32_t* lpiProtocols,
    uint32_t dwResolution,
    void* lpServiceAsyncInfo,
    void* lpCsaddrBuffer,
    uint32_t* lpdwBufferLength,
    char* lpAliasBuffer,
    uint32_t* lpdwAliasBufferLength);
C, "MSWSOCK.dll");
// $ffi->GetAddressByNameA(dwNameSpace, lpServiceType, lpServiceName, lpiProtocols, dwResolution, lpServiceAsyncInfo, lpCsaddrBuffer, lpdwBufferLength, lpAliasBuffer, lpdwAliasBufferLength);
// dwNameSpace : DWORD
// lpServiceType : GUID*
// lpServiceName : LPSTR optional
// lpiProtocols : INT* optional
// dwResolution : DWORD
// lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional
// lpCsaddrBuffer : void* out
// lpdwBufferLength : DWORD* in/out
// lpAliasBuffer : LPSTR optional, in/out
// lpdwAliasBufferLength : DWORD* 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 Mswsock extends StdCallLibrary {
    Mswsock INSTANCE = Native.load("mswsock", Mswsock.class, W32APIOptions.ASCII_OPTIONS);
    int GetAddressByNameA(
        int dwNameSpace,   // DWORD
        Pointer lpServiceType,   // GUID*
        String lpServiceName,   // LPSTR optional
        IntByReference lpiProtocols,   // INT* optional
        int dwResolution,   // DWORD
        Pointer lpServiceAsyncInfo,   // SERVICE_ASYNC_INFO* optional
        Pointer lpCsaddrBuffer,   // void* out
        IntByReference lpdwBufferLength,   // DWORD* in/out
        byte[] lpAliasBuffer,   // LPSTR optional, in/out
        IntByReference lpdwAliasBufferLength   // DWORD* in/out
    );
}

@[Link("mswsock")]
lib LibMSWSOCK
  fun GetAddressByNameA = GetAddressByNameA(
    dwNameSpace : UInt32,   # DWORD
    lpServiceType : GUID*,   # GUID*
    lpServiceName : UInt8*,   # LPSTR optional
    lpiProtocols : Int32*,   # INT* optional
    dwResolution : UInt32,   # DWORD
    lpServiceAsyncInfo : SERVICE_ASYNC_INFO*,   # SERVICE_ASYNC_INFO* optional
    lpCsaddrBuffer : Void*,   # void* out
    lpdwBufferLength : UInt32*,   # DWORD* in/out
    lpAliasBuffer : UInt8*,   # LPSTR optional, in/out
    lpdwAliasBufferLength : UInt32*   # DWORD* in/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 GetAddressByNameANative = Int32 Function(Uint32, Pointer<Void>, Pointer<Utf8>, Pointer<Int32>, Uint32, Pointer<Void>, Pointer<Void>, Pointer<Uint32>, Pointer<Utf8>, Pointer<Uint32>);
typedef GetAddressByNameADart = int Function(int, Pointer<Void>, Pointer<Utf8>, Pointer<Int32>, int, Pointer<Void>, Pointer<Void>, Pointer<Uint32>, Pointer<Utf8>, Pointer<Uint32>);
final GetAddressByNameA = DynamicLibrary.open('MSWSOCK.dll')
    .lookupFunction<GetAddressByNameANative, GetAddressByNameADart>('GetAddressByNameA');
// dwNameSpace : DWORD -> Uint32
// lpServiceType : GUID* -> Pointer<Void>
// lpServiceName : LPSTR optional -> Pointer<Utf8>
// lpiProtocols : INT* optional -> Pointer<Int32>
// dwResolution : DWORD -> Uint32
// lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> Pointer<Void>
// lpCsaddrBuffer : void* out -> Pointer<Void>
// lpdwBufferLength : DWORD* in/out -> Pointer<Uint32>
// lpAliasBuffer : LPSTR optional, in/out -> Pointer<Utf8>
// lpdwAliasBufferLength : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetAddressByNameA(
  dwNameSpace: DWORD;   // DWORD
  lpServiceType: PGUID;   // GUID*
  lpServiceName: PAnsiChar;   // LPSTR optional
  lpiProtocols: Pointer;   // INT* optional
  dwResolution: DWORD;   // DWORD
  lpServiceAsyncInfo: Pointer;   // SERVICE_ASYNC_INFO* optional
  lpCsaddrBuffer: Pointer;   // void* out
  lpdwBufferLength: Pointer;   // DWORD* in/out
  lpAliasBuffer: PAnsiChar;   // LPSTR optional, in/out
  lpdwAliasBufferLength: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'MSWSOCK.dll' name 'GetAddressByNameA';

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

foreign import stdcall safe "GetAddressByNameA"
  c_GetAddressByNameA :: Word32 -> Ptr () -> CString -> Ptr Int32 -> Word32 -> Ptr () -> Ptr () -> Ptr Word32 -> CString -> Ptr Word32 -> IO Int32
-- dwNameSpace : DWORD -> Word32
-- lpServiceType : GUID* -> Ptr ()
-- lpServiceName : LPSTR optional -> CString
-- lpiProtocols : INT* optional -> Ptr Int32
-- dwResolution : DWORD -> Word32
-- lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> Ptr ()
-- lpCsaddrBuffer : void* out -> Ptr ()
-- lpdwBufferLength : DWORD* in/out -> Ptr Word32
-- lpAliasBuffer : LPSTR optional, in/out -> CString
-- lpdwAliasBufferLength : DWORD* in/out -> Ptr Word32
-- 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 getaddressbynamea =
  foreign "GetAddressByNameA"
    (uint32_t @-> (ptr void) @-> string @-> (ptr int32_t) @-> uint32_t @-> (ptr void) @-> (ptr void) @-> (ptr uint32_t) @-> string @-> (ptr uint32_t) @-> returning int32_t)
(* dwNameSpace : DWORD -> uint32_t *)
(* lpServiceType : GUID* -> (ptr void) *)
(* lpServiceName : LPSTR optional -> string *)
(* lpiProtocols : INT* optional -> (ptr int32_t) *)
(* dwResolution : DWORD -> uint32_t *)
(* lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> (ptr void) *)
(* lpCsaddrBuffer : void* out -> (ptr void) *)
(* lpdwBufferLength : DWORD* in/out -> (ptr uint32_t) *)
(* lpAliasBuffer : LPSTR optional, in/out -> string *)
(* lpdwAliasBufferLength : DWORD* in/out -> (ptr uint32_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 mswsock (t "MSWSOCK.dll"))
(cffi:use-foreign-library mswsock)

(cffi:defcfun ("GetAddressByNameA" get-address-by-name-a :convention :stdcall) :int32
  (dw-name-space :uint32)   ; DWORD
  (lp-service-type :pointer)   ; GUID*
  (lp-service-name :string)   ; LPSTR optional
  (lpi-protocols :pointer)   ; INT* optional
  (dw-resolution :uint32)   ; DWORD
  (lp-service-async-info :pointer)   ; SERVICE_ASYNC_INFO* optional
  (lp-csaddr-buffer :pointer)   ; void* out
  (lpdw-buffer-length :pointer)   ; DWORD* in/out
  (lp-alias-buffer :pointer)   ; LPSTR optional, in/out
  (lpdw-alias-buffer-length :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetAddressByNameA = Win32::API::More->new('MSWSOCK',
    'int GetAddressByNameA(DWORD dwNameSpace, LPVOID lpServiceType, LPCSTR lpServiceName, LPVOID lpiProtocols, DWORD dwResolution, LPVOID lpServiceAsyncInfo, LPVOID lpCsaddrBuffer, LPVOID lpdwBufferLength, LPSTR lpAliasBuffer, LPVOID lpdwAliasBufferLength)');
# my $ret = $GetAddressByNameA->Call($dwNameSpace, $lpServiceType, $lpServiceName, $lpiProtocols, $dwResolution, $lpServiceAsyncInfo, $lpCsaddrBuffer, $lpdwBufferLength, $lpAliasBuffer, $lpdwAliasBufferLength);
# dwNameSpace : DWORD -> DWORD
# lpServiceType : GUID* -> LPVOID
# lpServiceName : LPSTR optional -> LPCSTR
# lpiProtocols : INT* optional -> LPVOID
# dwResolution : DWORD -> DWORD
# lpServiceAsyncInfo : SERVICE_ASYNC_INFO* optional -> LPVOID
# lpCsaddrBuffer : void* out -> LPVOID
# lpdwBufferLength : DWORD* in/out -> LPVOID
# lpAliasBuffer : LPSTR optional, in/out -> LPSTR
# lpdwAliasBufferLength : DWORD* 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。