WinHttpOpenRequest

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

void* WinHttpOpenRequest(
    void* hConnect,
    LPCWSTR pwszVerb,
    LPCWSTR pwszObjectName,
    LPCWSTR pwszVersion,
    LPCWSTR pwszReferrer,
    LPCWSTR* ppwszAcceptTypes,
    WINHTTP_OPEN_REQUEST_FLAGS dwFlags
);

<DllImport("WINHTTP.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WinHttpOpenRequest(
    hConnect As IntPtr,   ' void* in/out
    <MarshalAs(UnmanagedType.LPWStr)> pwszVerb As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pwszObjectName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pwszVersion As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pwszReferrer As String,   ' LPCWSTR
    ppwszAcceptTypes As IntPtr,   ' LPCWSTR*
    dwFlags As UInteger   ' WINHTTP_OPEN_REQUEST_FLAGS
) As IntPtr
End Function

' hConnect : void* in/out
' pwszVerb : LPCWSTR
' pwszObjectName : LPCWSTR
' pwszVersion : LPCWSTR
' pwszReferrer : LPCWSTR
' ppwszAcceptTypes : LPCWSTR*
' dwFlags : WINHTTP_OPEN_REQUEST_FLAGS
Declare PtrSafe Function WinHttpOpenRequest Lib "winhttp" ( _
    ByVal hConnect As LongPtr, _
    ByVal pwszVerb As LongPtr, _
    ByVal pwszObjectName As LongPtr, _
    ByVal pwszVersion As LongPtr, _
    ByVal pwszReferrer As LongPtr, _
    ByVal ppwszAcceptTypes As LongPtr, _
    ByVal dwFlags As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WinHttpOpenRequest = ctypes.windll.winhttp.WinHttpOpenRequest
WinHttpOpenRequest.restype = ctypes.c_void_p
WinHttpOpenRequest.argtypes = [
    ctypes.POINTER(None),  # hConnect : void* in/out
    wintypes.LPCWSTR,  # pwszVerb : LPCWSTR
    wintypes.LPCWSTR,  # pwszObjectName : LPCWSTR
    wintypes.LPCWSTR,  # pwszVersion : LPCWSTR
    wintypes.LPCWSTR,  # pwszReferrer : LPCWSTR
    ctypes.c_void_p,  # ppwszAcceptTypes : LPCWSTR*
    wintypes.DWORD,  # dwFlags : WINHTTP_OPEN_REQUEST_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINHTTP.dll')
WinHttpOpenRequest = Fiddle::Function.new(
  lib['WinHttpOpenRequest'],
  [
    Fiddle::TYPE_VOIDP,  # hConnect : void* in/out
    Fiddle::TYPE_VOIDP,  # pwszVerb : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pwszObjectName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pwszVersion : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pwszReferrer : LPCWSTR
    Fiddle::TYPE_VOIDP,  # ppwszAcceptTypes : LPCWSTR*
    -Fiddle::TYPE_INT,  # dwFlags : WINHTTP_OPEN_REQUEST_FLAGS
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "winhttp")]
extern "system" {
    fn WinHttpOpenRequest(
        hConnect: *mut (),  // void* in/out
        pwszVerb: *const u16,  // LPCWSTR
        pwszObjectName: *const u16,  // LPCWSTR
        pwszVersion: *const u16,  // LPCWSTR
        pwszReferrer: *const u16,  // LPCWSTR
        ppwszAcceptTypes: *const *const u16,  // LPCWSTR*
        dwFlags: u32  // WINHTTP_OPEN_REQUEST_FLAGS
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINHTTP.dll", SetLastError = true)]
public static extern IntPtr WinHttpOpenRequest(IntPtr hConnect, [MarshalAs(UnmanagedType.LPWStr)] string pwszVerb, [MarshalAs(UnmanagedType.LPWStr)] string pwszObjectName, [MarshalAs(UnmanagedType.LPWStr)] string pwszVersion, [MarshalAs(UnmanagedType.LPWStr)] string pwszReferrer, IntPtr ppwszAcceptTypes, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINHTTP_WinHttpOpenRequest' -Namespace Win32 -PassThru
# $api::WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags)

#uselib "WINHTTP.dll"
#func global WinHttpOpenRequest "WinHttpOpenRequest" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; WinHttpOpenRequest hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, varptr(ppwszAcceptTypes), dwFlags   ; 戻り値は stat
; hConnect : void* in/out -> "sptr"
; pwszVerb : LPCWSTR -> "sptr"
; pwszObjectName : LPCWSTR -> "sptr"
; pwszVersion : LPCWSTR -> "sptr"
; pwszReferrer : LPCWSTR -> "sptr"
; ppwszAcceptTypes : LPCWSTR* -> "sptr"
; dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> "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 (
	winhttp = windows.NewLazySystemDLL("WINHTTP.dll")
	procWinHttpOpenRequest = winhttp.NewProc("WinHttpOpenRequest")
)

// hConnect (void* in/out), pwszVerb (LPCWSTR), pwszObjectName (LPCWSTR), pwszVersion (LPCWSTR), pwszReferrer (LPCWSTR), ppwszAcceptTypes (LPCWSTR*), dwFlags (WINHTTP_OPEN_REQUEST_FLAGS)
r1, _, err := procWinHttpOpenRequest.Call(
	uintptr(hConnect),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszVerb))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszObjectName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszVersion))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszReferrer))),
	uintptr(ppwszAcceptTypes),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function WinHttpOpenRequest(
  hConnect: Pointer;   // void* in/out
  pwszVerb: PWideChar;   // LPCWSTR
  pwszObjectName: PWideChar;   // LPCWSTR
  pwszVersion: PWideChar;   // LPCWSTR
  pwszReferrer: PWideChar;   // LPCWSTR
  ppwszAcceptTypes: PPWideChar;   // LPCWSTR*
  dwFlags: DWORD   // WINHTTP_OPEN_REQUEST_FLAGS
): Pointer; stdcall;
  external 'WINHTTP.dll' name 'WinHttpOpenRequest';

result := DllCall("WINHTTP\WinHttpOpenRequest"
    , "Ptr", hConnect   ; void* in/out
    , "WStr", pwszVerb   ; LPCWSTR
    , "WStr", pwszObjectName   ; LPCWSTR
    , "WStr", pwszVersion   ; LPCWSTR
    , "WStr", pwszReferrer   ; LPCWSTR
    , "Ptr", ppwszAcceptTypes   ; LPCWSTR*
    , "UInt", dwFlags   ; WINHTTP_OPEN_REQUEST_FLAGS
    , "Ptr")   ; return: void*

●WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags) = DLL("WINHTTP.dll", "void* WinHttpOpenRequest(void*, char*, char*, char*, char*, void*, dword)")
# 呼び出し: WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags)
# hConnect : void* in/out -> "void*"
# pwszVerb : LPCWSTR -> "char*"
# pwszObjectName : LPCWSTR -> "char*"
# pwszVersion : LPCWSTR -> "char*"
# pwszReferrer : LPCWSTR -> "char*"
# ppwszAcceptTypes : LPCWSTR* -> "void*"
# dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> "dword"
# 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 "winhttp" fn WinHttpOpenRequest(
    hConnect: ?*anyopaque, // void* in/out
    pwszVerb: [*c]const u16, // LPCWSTR
    pwszObjectName: [*c]const u16, // LPCWSTR
    pwszVersion: [*c]const u16, // LPCWSTR
    pwszReferrer: [*c]const u16, // LPCWSTR
    ppwszAcceptTypes: [*c][*c]u16, // LPCWSTR*
    dwFlags: u32 // WINHTTP_OPEN_REQUEST_FLAGS
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc WinHttpOpenRequest(
    hConnect: pointer,  # void* in/out
    pwszVerb: WideCString,  # LPCWSTR
    pwszObjectName: WideCString,  # LPCWSTR
    pwszVersion: WideCString,  # LPCWSTR
    pwszReferrer: WideCString,  # LPCWSTR
    ppwszAcceptTypes: ptr WideCString,  # LPCWSTR*
    dwFlags: uint32  # WINHTTP_OPEN_REQUEST_FLAGS
): pointer {.importc: "WinHttpOpenRequest", stdcall, dynlib: "WINHTTP.dll".}

pragma(lib, "winhttp");
extern(Windows)
void* WinHttpOpenRequest(
    void* hConnect,   // void* in/out
    const(wchar)* pwszVerb,   // LPCWSTR
    const(wchar)* pwszObjectName,   // LPCWSTR
    const(wchar)* pwszVersion,   // LPCWSTR
    const(wchar)* pwszReferrer,   // LPCWSTR
    wchar** ppwszAcceptTypes,   // LPCWSTR*
    uint dwFlags   // WINHTTP_OPEN_REQUEST_FLAGS
);

ccall((:WinHttpOpenRequest, "WINHTTP.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Cwstring, Cwstring, Cwstring, Cwstring, Ptr{Ptr{UInt16}}, UInt32),
      hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags)
# hConnect : void* in/out -> Ptr{Cvoid}
# pwszVerb : LPCWSTR -> Cwstring
# pwszObjectName : LPCWSTR -> Cwstring
# pwszVersion : LPCWSTR -> Cwstring
# pwszReferrer : LPCWSTR -> Cwstring
# ppwszAcceptTypes : LPCWSTR* -> Ptr{Ptr{UInt16}}
# dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* WinHttpOpenRequest(
    void* hConnect,
    const uint16_t* pwszVerb,
    const uint16_t* pwszObjectName,
    const uint16_t* pwszVersion,
    const uint16_t* pwszReferrer,
    uint16_t** ppwszAcceptTypes,
    uint32_t dwFlags);
]]
local winhttp = ffi.load("winhttp")
-- winhttp.WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags)
-- hConnect : void* in/out
-- pwszVerb : LPCWSTR
-- pwszObjectName : LPCWSTR
-- pwszVersion : LPCWSTR
-- pwszReferrer : LPCWSTR
-- ppwszAcceptTypes : LPCWSTR*
-- dwFlags : WINHTTP_OPEN_REQUEST_FLAGS
-- 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('WINHTTP.dll');
const WinHttpOpenRequest = lib.func('__stdcall', 'WinHttpOpenRequest', 'void *', ['void *', 'str16', 'str16', 'str16', 'str16', 'void *', 'uint32_t']);
// WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags)
// hConnect : void* in/out -> 'void *'
// pwszVerb : LPCWSTR -> 'str16'
// pwszObjectName : LPCWSTR -> 'str16'
// pwszVersion : LPCWSTR -> 'str16'
// pwszReferrer : LPCWSTR -> 'str16'
// ppwszAcceptTypes : LPCWSTR* -> 'void *'
// dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> '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("WINHTTP.dll", {
  WinHttpOpenRequest: { parameters: ["pointer", "buffer", "buffer", "buffer", "buffer", "pointer", "u32"], result: "pointer" },
});
// lib.symbols.WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags)
// hConnect : void* in/out -> "pointer"
// pwszVerb : LPCWSTR -> "buffer"
// pwszObjectName : LPCWSTR -> "buffer"
// pwszVersion : LPCWSTR -> "buffer"
// pwszReferrer : LPCWSTR -> "buffer"
// ppwszAcceptTypes : LPCWSTR* -> "pointer"
// dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> "u32"
// 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
void* WinHttpOpenRequest(
    void* hConnect,
    const uint16_t* pwszVerb,
    const uint16_t* pwszObjectName,
    const uint16_t* pwszVersion,
    const uint16_t* pwszReferrer,
    uint16_t** ppwszAcceptTypes,
    uint32_t dwFlags);
C, "WINHTTP.dll");
// $ffi->WinHttpOpenRequest(hConnect, pwszVerb, pwszObjectName, pwszVersion, pwszReferrer, ppwszAcceptTypes, dwFlags);
// hConnect : void* in/out
// pwszVerb : LPCWSTR
// pwszObjectName : LPCWSTR
// pwszVersion : LPCWSTR
// pwszReferrer : LPCWSTR
// ppwszAcceptTypes : LPCWSTR*
// dwFlags : WINHTTP_OPEN_REQUEST_FLAGS
// 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 Winhttp extends StdCallLibrary {
    Winhttp INSTANCE = Native.load("winhttp", Winhttp.class);
    Pointer WinHttpOpenRequest(
        Pointer hConnect,   // void* in/out
        WString pwszVerb,   // LPCWSTR
        WString pwszObjectName,   // LPCWSTR
        WString pwszVersion,   // LPCWSTR
        WString pwszReferrer,   // LPCWSTR
        PointerByReference ppwszAcceptTypes,   // LPCWSTR*
        int dwFlags   // WINHTTP_OPEN_REQUEST_FLAGS
    );
}

@[Link("winhttp")]
lib LibWINHTTP
  fun WinHttpOpenRequest = WinHttpOpenRequest(
    hConnect : Void*,   # void* in/out
    pwszVerb : UInt16*,   # LPCWSTR
    pwszObjectName : UInt16*,   # LPCWSTR
    pwszVersion : UInt16*,   # LPCWSTR
    pwszReferrer : UInt16*,   # LPCWSTR
    ppwszAcceptTypes : UInt16**,   # LPCWSTR*
    dwFlags : UInt32   # WINHTTP_OPEN_REQUEST_FLAGS
  ) : Void*
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 WinHttpOpenRequestNative = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Pointer<Utf16>>, Uint32);
typedef WinHttpOpenRequestDart = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Pointer<Utf16>>, int);
final WinHttpOpenRequest = DynamicLibrary.open('WINHTTP.dll')
    .lookupFunction<WinHttpOpenRequestNative, WinHttpOpenRequestDart>('WinHttpOpenRequest');
// hConnect : void* in/out -> Pointer<Void>
// pwszVerb : LPCWSTR -> Pointer<Utf16>
// pwszObjectName : LPCWSTR -> Pointer<Utf16>
// pwszVersion : LPCWSTR -> Pointer<Utf16>
// pwszReferrer : LPCWSTR -> Pointer<Utf16>
// ppwszAcceptTypes : LPCWSTR* -> Pointer<Pointer<Utf16>>
// dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WinHttpOpenRequest(
  hConnect: Pointer;   // void* in/out
  pwszVerb: PWideChar;   // LPCWSTR
  pwszObjectName: PWideChar;   // LPCWSTR
  pwszVersion: PWideChar;   // LPCWSTR
  pwszReferrer: PWideChar;   // LPCWSTR
  ppwszAcceptTypes: PPWideChar;   // LPCWSTR*
  dwFlags: DWORD   // WINHTTP_OPEN_REQUEST_FLAGS
): Pointer; stdcall;
  external 'WINHTTP.dll' name 'WinHttpOpenRequest';

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

foreign import stdcall safe "WinHttpOpenRequest"
  c_WinHttpOpenRequest :: Ptr () -> CWString -> CWString -> CWString -> CWString -> Ptr CWString -> Word32 -> IO (Ptr ())
-- hConnect : void* in/out -> Ptr ()
-- pwszVerb : LPCWSTR -> CWString
-- pwszObjectName : LPCWSTR -> CWString
-- pwszVersion : LPCWSTR -> CWString
-- pwszReferrer : LPCWSTR -> CWString
-- ppwszAcceptTypes : LPCWSTR* -> Ptr CWString
-- dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> 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 winhttpopenrequest =
  foreign "WinHttpOpenRequest"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr (ptr uint16_t)) @-> uint32_t @-> returning (ptr void))
(* hConnect : void* in/out -> (ptr void) *)
(* pwszVerb : LPCWSTR -> (ptr uint16_t) *)
(* pwszObjectName : LPCWSTR -> (ptr uint16_t) *)
(* pwszVersion : LPCWSTR -> (ptr uint16_t) *)
(* pwszReferrer : LPCWSTR -> (ptr uint16_t) *)
(* ppwszAcceptTypes : LPCWSTR* -> (ptr (ptr uint16_t)) *)
(* dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> 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 winhttp (t "WINHTTP.dll"))
(cffi:use-foreign-library winhttp)

(cffi:defcfun ("WinHttpOpenRequest" win-http-open-request :convention :stdcall) :pointer
  (h-connect :pointer)   ; void* in/out
  (pwsz-verb (:string :encoding :utf-16le))   ; LPCWSTR
  (pwsz-object-name (:string :encoding :utf-16le))   ; LPCWSTR
  (pwsz-version (:string :encoding :utf-16le))   ; LPCWSTR
  (pwsz-referrer (:string :encoding :utf-16le))   ; LPCWSTR
  (ppwsz-accept-types :pointer)   ; LPCWSTR*
  (dw-flags :uint32))   ; WINHTTP_OPEN_REQUEST_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WinHttpOpenRequest = Win32::API::More->new('WINHTTP',
    'LPVOID WinHttpOpenRequest(LPVOID hConnect, LPCWSTR pwszVerb, LPCWSTR pwszObjectName, LPCWSTR pwszVersion, LPCWSTR pwszReferrer, LPVOID ppwszAcceptTypes, DWORD dwFlags)');
# my $ret = $WinHttpOpenRequest->Call($hConnect, $pwszVerb, $pwszObjectName, $pwszVersion, $pwszReferrer, $ppwszAcceptTypes, $dwFlags);
# hConnect : void* in/out -> LPVOID
# pwszVerb : LPCWSTR -> LPCWSTR
# pwszObjectName : LPCWSTR -> LPCWSTR
# pwszVersion : LPCWSTR -> LPCWSTR
# pwszReferrer : LPCWSTR -> LPCWSTR
# ppwszAcceptTypes : LPCWSTR* -> LPVOID
# dwFlags : WINHTTP_OPEN_REQUEST_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。