ホーム › System.DeploymentServices › PxeDhcpv6ParseRelayForw

PxeDhcpv6ParseRelayForw

関数

DHCPv6リレー転送パケットを解析し内部メッセージを抽出する。

DLLWDSPXE.dll呼出規約winapi対応OSwindows8.0

シグネチャ

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

DWORD PxeDhcpv6ParseRelayForw(
    void* pRelayForwPacket,
    DWORD uRelayForwPacketLen,
    PXE_DHCPV6_NESTED_RELAY_MESSAGE* pRelayMessages,
    DWORD nRelayMessages,
    DWORD* pnRelayMessages,
    BYTE** ppInnerPacket,
    DWORD* pcbInnerPacket
);

パラメーター

名前	型	方向	説明
pRelayForwPacket	void*	in	解析対象のDHCPv6 Relay-Forwardパケットへのポインタ。
uRelayForwPacketLen	DWORD	in	Relay-Forwardパケットの長さ(バイト単位)。
pRelayMessages	PXE_DHCPV6_NESTED_RELAY_MESSAGE*	out	解析した入れ子リレーメッセージを格納する配列バッファ。
nRelayMessages	DWORD	in	pRelayMessages配列が保持できる要素数。
pnRelayMessages	DWORD*	out	実際に解析されたリレーメッセージ数を受け取るDWORDポインタ。
ppInnerPacket	BYTE**	out	最内部のクライアントパケット先頭を指すポインタを受け取る。
pcbInnerPacket	DWORD*	out	最内部パケットの長さを受け取るDWORDポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD PxeDhcpv6ParseRelayForw(
    void* pRelayForwPacket,
    DWORD uRelayForwPacketLen,
    PXE_DHCPV6_NESTED_RELAY_MESSAGE* pRelayMessages,
    DWORD nRelayMessages,
    DWORD* pnRelayMessages,
    BYTE** ppInnerPacket,
    DWORD* pcbInnerPacket
);

[DllImport("WDSPXE.dll", ExactSpelling = true)]
static extern uint PxeDhcpv6ParseRelayForw(
    IntPtr pRelayForwPacket,   // void*
    uint uRelayForwPacketLen,   // DWORD
    IntPtr pRelayMessages,   // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    uint nRelayMessages,   // DWORD
    out uint pnRelayMessages,   // DWORD* out
    IntPtr ppInnerPacket,   // BYTE** out
    out uint pcbInnerPacket   // DWORD* out
);

<DllImport("WDSPXE.dll", ExactSpelling:=True)>
Public Shared Function PxeDhcpv6ParseRelayForw(
    pRelayForwPacket As IntPtr,   ' void*
    uRelayForwPacketLen As UInteger,   ' DWORD
    pRelayMessages As IntPtr,   ' PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    nRelayMessages As UInteger,   ' DWORD
    <Out> ByRef pnRelayMessages As UInteger,   ' DWORD* out
    ppInnerPacket As IntPtr,   ' BYTE** out
    <Out> ByRef pcbInnerPacket As UInteger   ' DWORD* out
) As UInteger
End Function

' pRelayForwPacket : void*
' uRelayForwPacketLen : DWORD
' pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
' nRelayMessages : DWORD
' pnRelayMessages : DWORD* out
' ppInnerPacket : BYTE** out
' pcbInnerPacket : DWORD* out
Declare PtrSafe Function PxeDhcpv6ParseRelayForw Lib "wdspxe" ( _
    ByVal pRelayForwPacket As LongPtr, _
    ByVal uRelayForwPacketLen As Long, _
    ByVal pRelayMessages As LongPtr, _
    ByVal nRelayMessages As Long, _
    ByRef pnRelayMessages As Long, _
    ByVal ppInnerPacket As LongPtr, _
    ByRef pcbInnerPacket 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

PxeDhcpv6ParseRelayForw = ctypes.windll.wdspxe.PxeDhcpv6ParseRelayForw
PxeDhcpv6ParseRelayForw.restype = wintypes.DWORD
PxeDhcpv6ParseRelayForw.argtypes = [
    ctypes.POINTER(None),  # pRelayForwPacket : void*
    wintypes.DWORD,  # uRelayForwPacketLen : DWORD
    ctypes.c_void_p,  # pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    wintypes.DWORD,  # nRelayMessages : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pnRelayMessages : DWORD* out
    ctypes.c_void_p,  # ppInnerPacket : BYTE** out
    ctypes.POINTER(wintypes.DWORD),  # pcbInnerPacket : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WDSPXE.dll')
PxeDhcpv6ParseRelayForw = Fiddle::Function.new(
  lib['PxeDhcpv6ParseRelayForw'],
  [
    Fiddle::TYPE_VOIDP,  # pRelayForwPacket : void*
    -Fiddle::TYPE_INT,  # uRelayForwPacketLen : DWORD
    Fiddle::TYPE_VOIDP,  # pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    -Fiddle::TYPE_INT,  # nRelayMessages : DWORD
    Fiddle::TYPE_VOIDP,  # pnRelayMessages : DWORD* out
    Fiddle::TYPE_VOIDP,  # ppInnerPacket : BYTE** out
    Fiddle::TYPE_VOIDP,  # pcbInnerPacket : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wdspxe")]
extern "system" {
    fn PxeDhcpv6ParseRelayForw(
        pRelayForwPacket: *mut (),  // void*
        uRelayForwPacketLen: u32,  // DWORD
        pRelayMessages: *mut PXE_DHCPV6_NESTED_RELAY_MESSAGE,  // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
        nRelayMessages: u32,  // DWORD
        pnRelayMessages: *mut u32,  // DWORD* out
        ppInnerPacket: *mut *mut u8,  // BYTE** out
        pcbInnerPacket: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WDSPXE.dll")]
public static extern uint PxeDhcpv6ParseRelayForw(IntPtr pRelayForwPacket, uint uRelayForwPacketLen, IntPtr pRelayMessages, uint nRelayMessages, out uint pnRelayMessages, IntPtr ppInnerPacket, out uint pcbInnerPacket);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WDSPXE_PxeDhcpv6ParseRelayForw' -Namespace Win32 -PassThru
# $api::PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)

#uselib "WDSPXE.dll"
#func global PxeDhcpv6ParseRelayForw "PxeDhcpv6ParseRelayForw" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; PxeDhcpv6ParseRelayForw pRelayForwPacket, uRelayForwPacketLen, varptr(pRelayMessages), nRelayMessages, varptr(pnRelayMessages), varptr(ppInnerPacket), varptr(pcbInnerPacket)   ; 戻り値は stat
; pRelayForwPacket : void* -> "sptr"
; uRelayForwPacketLen : DWORD -> "sptr"
; pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "sptr"
; nRelayMessages : DWORD -> "sptr"
; pnRelayMessages : DWORD* out -> "sptr"
; ppInnerPacket : BYTE** out -> "sptr"
; pcbInnerPacket : DWORD* 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。

出力引数:

#uselib "WDSPXE.dll"
#cfunc global PxeDhcpv6ParseRelayForw "PxeDhcpv6ParseRelayForw" sptr, int, var, int, var, var, var
; res = PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
; pRelayForwPacket : void* -> "sptr"
; uRelayForwPacketLen : DWORD -> "int"
; pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "var"
; nRelayMessages : DWORD -> "int"
; pnRelayMessages : DWORD* out -> "var"
; ppInnerPacket : BYTE** out -> "var"
; pcbInnerPacket : DWORD* out -> "var"
; ※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。#uselib "WDSPXE.dll"
#cfunc global PxeDhcpv6ParseRelayForw "PxeDhcpv6ParseRelayForw" sptr, int, sptr, int, sptr, sptr, sptr
; res = PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, varptr(pRelayMessages), nRelayMessages, varptr(pnRelayMessages), varptr(ppInnerPacket), varptr(pcbInnerPacket))
; pRelayForwPacket : void* -> "sptr"
; uRelayForwPacketLen : DWORD -> "int"
; pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "sptr"
; nRelayMessages : DWORD -> "int"
; pnRelayMessages : DWORD* out -> "sptr"
; ppInnerPacket : BYTE** out -> "sptr"
; pcbInnerPacket : DWORD* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; DWORD PxeDhcpv6ParseRelayForw(void* pRelayForwPacket, DWORD uRelayForwPacketLen, PXE_DHCPV6_NESTED_RELAY_MESSAGE* pRelayMessages, DWORD nRelayMessages, DWORD* pnRelayMessages, BYTE** ppInnerPacket, DWORD* pcbInnerPacket)
#uselib "WDSPXE.dll"
#cfunc global PxeDhcpv6ParseRelayForw "PxeDhcpv6ParseRelayForw" intptr, int, var, int, var, var, var
; res = PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
; pRelayForwPacket : void* -> "intptr"
; uRelayForwPacketLen : DWORD -> "int"
; pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "var"
; nRelayMessages : DWORD -> "int"
; pnRelayMessages : DWORD* out -> "var"
; ppInnerPacket : BYTE** out -> "var"
; pcbInnerPacket : DWORD* out -> "var"
; ※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。; DWORD PxeDhcpv6ParseRelayForw(void* pRelayForwPacket, DWORD uRelayForwPacketLen, PXE_DHCPV6_NESTED_RELAY_MESSAGE* pRelayMessages, DWORD nRelayMessages, DWORD* pnRelayMessages, BYTE** ppInnerPacket, DWORD* pcbInnerPacket)
#uselib "WDSPXE.dll"
#cfunc global PxeDhcpv6ParseRelayForw "PxeDhcpv6ParseRelayForw" intptr, int, intptr, int, intptr, intptr, intptr
; res = PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, varptr(pRelayMessages), nRelayMessages, varptr(pnRelayMessages), varptr(ppInnerPacket), varptr(pcbInnerPacket))
; pRelayForwPacket : void* -> "intptr"
; uRelayForwPacketLen : DWORD -> "int"
; pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "intptr"
; nRelayMessages : DWORD -> "int"
; pnRelayMessages : DWORD* out -> "intptr"
; ppInnerPacket : BYTE** out -> "intptr"
; pcbInnerPacket : DWORD* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	wdspxe = windows.NewLazySystemDLL("WDSPXE.dll")
	procPxeDhcpv6ParseRelayForw = wdspxe.NewProc("PxeDhcpv6ParseRelayForw")
)

// pRelayForwPacket (void*), uRelayForwPacketLen (DWORD), pRelayMessages (PXE_DHCPV6_NESTED_RELAY_MESSAGE* out), nRelayMessages (DWORD), pnRelayMessages (DWORD* out), ppInnerPacket (BYTE** out), pcbInnerPacket (DWORD* out)
r1, _, err := procPxeDhcpv6ParseRelayForw.Call(
	uintptr(pRelayForwPacket),
	uintptr(uRelayForwPacketLen),
	uintptr(pRelayMessages),
	uintptr(nRelayMessages),
	uintptr(pnRelayMessages),
	uintptr(ppInnerPacket),
	uintptr(pcbInnerPacket),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PxeDhcpv6ParseRelayForw(
  pRelayForwPacket: Pointer;   // void*
  uRelayForwPacketLen: DWORD;   // DWORD
  pRelayMessages: Pointer;   // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
  nRelayMessages: DWORD;   // DWORD
  pnRelayMessages: Pointer;   // DWORD* out
  ppInnerPacket: Pointer;   // BYTE** out
  pcbInnerPacket: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'WDSPXE.dll' name 'PxeDhcpv6ParseRelayForw';

result := DllCall("WDSPXE\PxeDhcpv6ParseRelayForw"
    , "Ptr", pRelayForwPacket   ; void*
    , "UInt", uRelayForwPacketLen   ; DWORD
    , "Ptr", pRelayMessages   ; PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    , "UInt", nRelayMessages   ; DWORD
    , "Ptr", pnRelayMessages   ; DWORD* out
    , "Ptr", ppInnerPacket   ; BYTE** out
    , "Ptr", pcbInnerPacket   ; DWORD* out
    , "UInt")   ; return: DWORD

●PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket) = DLL("WDSPXE.dll", "dword PxeDhcpv6ParseRelayForw(void*, dword, void*, dword, void*, void*, void*)")
# 呼び出し: PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
# pRelayForwPacket : void* -> "void*"
# uRelayForwPacketLen : DWORD -> "dword"
# pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "void*"
# nRelayMessages : DWORD -> "dword"
# pnRelayMessages : DWORD* out -> "void*"
# ppInnerPacket : BYTE** out -> "void*"
# pcbInnerPacket : DWORD* 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 "wdspxe" fn PxeDhcpv6ParseRelayForw(
    pRelayForwPacket: ?*anyopaque, // void*
    uRelayForwPacketLen: u32, // DWORD
    pRelayMessages: [*c]PXE_DHCPV6_NESTED_RELAY_MESSAGE, // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    nRelayMessages: u32, // DWORD
    pnRelayMessages: [*c]u32, // DWORD* out
    ppInnerPacket: [*c][*c]u8, // BYTE** out
    pcbInnerPacket: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) u32;

proc PxeDhcpv6ParseRelayForw(
    pRelayForwPacket: pointer,  # void*
    uRelayForwPacketLen: uint32,  # DWORD
    pRelayMessages: ptr PXE_DHCPV6_NESTED_RELAY_MESSAGE,  # PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    nRelayMessages: uint32,  # DWORD
    pnRelayMessages: ptr uint32,  # DWORD* out
    ppInnerPacket: ptr uint8,  # BYTE** out
    pcbInnerPacket: ptr uint32  # DWORD* out
): uint32 {.importc: "PxeDhcpv6ParseRelayForw", stdcall, dynlib: "WDSPXE.dll".}

pragma(lib, "wdspxe");
extern(Windows)
uint PxeDhcpv6ParseRelayForw(
    void* pRelayForwPacket,   // void*
    uint uRelayForwPacketLen,   // DWORD
    PXE_DHCPV6_NESTED_RELAY_MESSAGE* pRelayMessages,   // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    uint nRelayMessages,   // DWORD
    uint* pnRelayMessages,   // DWORD* out
    ubyte** ppInnerPacket,   // BYTE** out
    uint* pcbInnerPacket   // DWORD* out
);

ccall((:PxeDhcpv6ParseRelayForw, "WDSPXE.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, UInt32, Ptr{PXE_DHCPV6_NESTED_RELAY_MESSAGE}, UInt32, Ptr{UInt32}, Ptr{UInt8}, Ptr{UInt32}),
      pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
# pRelayForwPacket : void* -> Ptr{Cvoid}
# uRelayForwPacketLen : DWORD -> UInt32
# pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> Ptr{PXE_DHCPV6_NESTED_RELAY_MESSAGE}
# nRelayMessages : DWORD -> UInt32
# pnRelayMessages : DWORD* out -> Ptr{UInt32}
# ppInnerPacket : BYTE** out -> Ptr{UInt8}
# pcbInnerPacket : DWORD* out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t PxeDhcpv6ParseRelayForw(
    void* pRelayForwPacket,
    uint32_t uRelayForwPacketLen,
    void* pRelayMessages,
    uint32_t nRelayMessages,
    uint32_t* pnRelayMessages,
    uint8_t** ppInnerPacket,
    uint32_t* pcbInnerPacket);
]]
local wdspxe = ffi.load("wdspxe")
-- wdspxe.PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
-- pRelayForwPacket : void*
-- uRelayForwPacketLen : DWORD
-- pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
-- nRelayMessages : DWORD
-- pnRelayMessages : DWORD* out
-- ppInnerPacket : BYTE** out
-- pcbInnerPacket : DWORD* 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('WDSPXE.dll');
const PxeDhcpv6ParseRelayForw = lib.func('__stdcall', 'PxeDhcpv6ParseRelayForw', 'uint32_t', ['void *', 'uint32_t', 'void *', 'uint32_t', 'uint32_t *', 'uint8_t *', 'uint32_t *']);
// PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
// pRelayForwPacket : void* -> 'void *'
// uRelayForwPacketLen : DWORD -> 'uint32_t'
// pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> 'void *'
// nRelayMessages : DWORD -> 'uint32_t'
// pnRelayMessages : DWORD* out -> 'uint32_t *'
// ppInnerPacket : BYTE** out -> 'uint8_t *'
// pcbInnerPacket : DWORD* 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("WDSPXE.dll", {
  PxeDhcpv6ParseRelayForw: { parameters: ["pointer", "u32", "pointer", "u32", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket)
// pRelayForwPacket : void* -> "pointer"
// uRelayForwPacketLen : DWORD -> "u32"
// pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> "pointer"
// nRelayMessages : DWORD -> "u32"
// pnRelayMessages : DWORD* out -> "pointer"
// ppInnerPacket : BYTE** out -> "pointer"
// pcbInnerPacket : DWORD* 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 PxeDhcpv6ParseRelayForw(
    void* pRelayForwPacket,
    uint32_t uRelayForwPacketLen,
    void* pRelayMessages,
    uint32_t nRelayMessages,
    uint32_t* pnRelayMessages,
    uint8_t** ppInnerPacket,
    uint32_t* pcbInnerPacket);
C, "WDSPXE.dll");
// $ffi->PxeDhcpv6ParseRelayForw(pRelayForwPacket, uRelayForwPacketLen, pRelayMessages, nRelayMessages, pnRelayMessages, ppInnerPacket, pcbInnerPacket);
// pRelayForwPacket : void*
// uRelayForwPacketLen : DWORD
// pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
// nRelayMessages : DWORD
// pnRelayMessages : DWORD* out
// ppInnerPacket : BYTE** out
// pcbInnerPacket : DWORD* 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 Wdspxe extends StdCallLibrary {
    Wdspxe INSTANCE = Native.load("wdspxe", Wdspxe.class);
    int PxeDhcpv6ParseRelayForw(
        Pointer pRelayForwPacket,   // void*
        int uRelayForwPacketLen,   // DWORD
        Pointer pRelayMessages,   // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
        int nRelayMessages,   // DWORD
        IntByReference pnRelayMessages,   // DWORD* out
        Pointer ppInnerPacket,   // BYTE** out
        IntByReference pcbInnerPacket   // DWORD* out
    );
}

@[Link("wdspxe")]
lib LibWDSPXE
  fun PxeDhcpv6ParseRelayForw = PxeDhcpv6ParseRelayForw(
    pRelayForwPacket : Void*,   # void*
    uRelayForwPacketLen : UInt32,   # DWORD
    pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE*,   # PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
    nRelayMessages : UInt32,   # DWORD
    pnRelayMessages : UInt32*,   # DWORD* out
    ppInnerPacket : UInt8**,   # BYTE** out
    pcbInnerPacket : UInt32*   # DWORD* 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 PxeDhcpv6ParseRelayForwNative = Uint32 Function(Pointer<Void>, Uint32, Pointer<Void>, Uint32, Pointer<Uint32>, Pointer<Uint8>, Pointer<Uint32>);
typedef PxeDhcpv6ParseRelayForwDart = int Function(Pointer<Void>, int, Pointer<Void>, int, Pointer<Uint32>, Pointer<Uint8>, Pointer<Uint32>);
final PxeDhcpv6ParseRelayForw = DynamicLibrary.open('WDSPXE.dll')
    .lookupFunction<PxeDhcpv6ParseRelayForwNative, PxeDhcpv6ParseRelayForwDart>('PxeDhcpv6ParseRelayForw');
// pRelayForwPacket : void* -> Pointer<Void>
// uRelayForwPacketLen : DWORD -> Uint32
// pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> Pointer<Void>
// nRelayMessages : DWORD -> Uint32
// pnRelayMessages : DWORD* out -> Pointer<Uint32>
// ppInnerPacket : BYTE** out -> Pointer<Uint8>
// pcbInnerPacket : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PxeDhcpv6ParseRelayForw(
  pRelayForwPacket: Pointer;   // void*
  uRelayForwPacketLen: DWORD;   // DWORD
  pRelayMessages: Pointer;   // PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
  nRelayMessages: DWORD;   // DWORD
  pnRelayMessages: Pointer;   // DWORD* out
  ppInnerPacket: Pointer;   // BYTE** out
  pcbInnerPacket: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'WDSPXE.dll' name 'PxeDhcpv6ParseRelayForw';

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

foreign import stdcall safe "PxeDhcpv6ParseRelayForw"
  c_PxeDhcpv6ParseRelayForw :: Ptr () -> Word32 -> Ptr () -> Word32 -> Ptr Word32 -> Ptr Word8 -> Ptr Word32 -> IO Word32
-- pRelayForwPacket : void* -> Ptr ()
-- uRelayForwPacketLen : DWORD -> Word32
-- pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> Ptr ()
-- nRelayMessages : DWORD -> Word32
-- pnRelayMessages : DWORD* out -> Ptr Word32
-- ppInnerPacket : BYTE** out -> Ptr Word8
-- pcbInnerPacket : DWORD* 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 pxedhcpv6parserelayforw =
  foreign "PxeDhcpv6ParseRelayForw"
    ((ptr void) @-> uint32_t @-> (ptr void) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint8_t) @-> (ptr uint32_t) @-> returning uint32_t)
(* pRelayForwPacket : void* -> (ptr void) *)
(* uRelayForwPacketLen : DWORD -> uint32_t *)
(* pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> (ptr void) *)
(* nRelayMessages : DWORD -> uint32_t *)
(* pnRelayMessages : DWORD* out -> (ptr uint32_t) *)
(* ppInnerPacket : BYTE** out -> (ptr uint8_t) *)
(* pcbInnerPacket : DWORD* 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 wdspxe (t "WDSPXE.dll"))
(cffi:use-foreign-library wdspxe)

(cffi:defcfun ("PxeDhcpv6ParseRelayForw" pxe-dhcpv6-parse-relay-forw :convention :stdcall) :uint32
  (p-relay-forw-packet :pointer)   ; void*
  (u-relay-forw-packet-len :uint32)   ; DWORD
  (p-relay-messages :pointer)   ; PXE_DHCPV6_NESTED_RELAY_MESSAGE* out
  (n-relay-messages :uint32)   ; DWORD
  (pn-relay-messages :pointer)   ; DWORD* out
  (pp-inner-packet :pointer)   ; BYTE** out
  (pcb-inner-packet :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $PxeDhcpv6ParseRelayForw = Win32::API::More->new('WDSPXE',
    'DWORD PxeDhcpv6ParseRelayForw(LPVOID pRelayForwPacket, DWORD uRelayForwPacketLen, LPVOID pRelayMessages, DWORD nRelayMessages, LPVOID pnRelayMessages, LPVOID ppInnerPacket, LPVOID pcbInnerPacket)');
# my $ret = $PxeDhcpv6ParseRelayForw->Call($pRelayForwPacket, $uRelayForwPacketLen, $pRelayMessages, $nRelayMessages, $pnRelayMessages, $ppInnerPacket, $pcbInnerPacket);
# pRelayForwPacket : void* -> LPVOID
# uRelayForwPacketLen : DWORD -> DWORD
# pRelayMessages : PXE_DHCPV6_NESTED_RELAY_MESSAGE* out -> LPVOID
# nRelayMessages : DWORD -> DWORD
# pnRelayMessages : DWORD* out -> LPVOID
# ppInnerPacket : BYTE** out -> LPVOID
# pcbInnerPacket : DWORD* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

PxeDhcpv6ParseRelayForw

シグネチャ

パラメーター

各言語での呼び出し定義

関連項目