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DhcpHlprCreateV4Policy

関数

IPv4 DHCPポリシー構造体をメモリ上に作成するヘルパー関数。

DLLDHCPSAPI.dll呼出規約winapi対応OSwindowsserver2012

シグネチャ

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

DWORD DhcpHlprCreateV4Policy(
    LPWSTR PolicyName,
    BOOL fGlobalPolicy,
    DWORD Subnet,
    DWORD ProcessingOrder,
    DHCP_POL_LOGIC_OPER RootOperator,
    LPWSTR Description,
    BOOL Enabled,
    DHCP_POLICY** Policy
);

パラメーター

名前	型	方向	説明
PolicyName	LPWSTR	in	作成するポリシーの名前を示す文字列。
fGlobalPolicy	BOOL	in	サーバー全体に適用するグローバルポリシーかどうかを示すBOOL。TRUEでグローバル。
Subnet	DWORD	in	ポリシーを適用するサブネットのIPアドレス(DWORD)。グローバルなら0。
ProcessingOrder	DWORD	in	ポリシーの評価順序(優先度)を示す値。
RootOperator	DHCP_POL_LOGIC_OPER	in	条件式のルート論理演算子を指定するDHCP_POL_LOGIC_OPER列挙値(AND/OR)。
Description	LPWSTR	in	ポリシーの説明文字列。省略時はNULL可。
Enabled	BOOL	in	ポリシーを有効状態で作成するかどうかを示すBOOL。
Policy	DHCP_POLICY**	out	生成されたDHCP_POLICY構造体へのポインタを受け取る二重ポインタ。使用後はヘルパー関数で解放する。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD DhcpHlprCreateV4Policy(
    LPWSTR PolicyName,
    BOOL fGlobalPolicy,
    DWORD Subnet,
    DWORD ProcessingOrder,
    DHCP_POL_LOGIC_OPER RootOperator,
    LPWSTR Description,
    BOOL Enabled,
    DHCP_POLICY** Policy
);

[DllImport("DHCPSAPI.dll", ExactSpelling = true)]
static extern uint DhcpHlprCreateV4Policy(
    [MarshalAs(UnmanagedType.LPWStr)] string PolicyName,   // LPWSTR
    bool fGlobalPolicy,   // BOOL
    uint Subnet,   // DWORD
    uint ProcessingOrder,   // DWORD
    int RootOperator,   // DHCP_POL_LOGIC_OPER
    [MarshalAs(UnmanagedType.LPWStr)] string Description,   // LPWSTR
    bool Enabled,   // BOOL
    IntPtr Policy   // DHCP_POLICY** out
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpHlprCreateV4Policy(
    <MarshalAs(UnmanagedType.LPWStr)> PolicyName As String,   ' LPWSTR
    fGlobalPolicy As Boolean,   ' BOOL
    Subnet As UInteger,   ' DWORD
    ProcessingOrder As UInteger,   ' DWORD
    RootOperator As Integer,   ' DHCP_POL_LOGIC_OPER
    <MarshalAs(UnmanagedType.LPWStr)> Description As String,   ' LPWSTR
    Enabled As Boolean,   ' BOOL
    Policy As IntPtr   ' DHCP_POLICY** out
) As UInteger
End Function

' PolicyName : LPWSTR
' fGlobalPolicy : BOOL
' Subnet : DWORD
' ProcessingOrder : DWORD
' RootOperator : DHCP_POL_LOGIC_OPER
' Description : LPWSTR
' Enabled : BOOL
' Policy : DHCP_POLICY** out
Declare PtrSafe Function DhcpHlprCreateV4Policy Lib "dhcpsapi" ( _
    ByVal PolicyName As LongPtr, _
    ByVal fGlobalPolicy As Long, _
    ByVal Subnet As Long, _
    ByVal ProcessingOrder As Long, _
    ByVal RootOperator As Long, _
    ByVal Description As LongPtr, _
    ByVal Enabled As Long, _
    ByVal Policy 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

DhcpHlprCreateV4Policy = ctypes.windll.dhcpsapi.DhcpHlprCreateV4Policy
DhcpHlprCreateV4Policy.restype = wintypes.DWORD
DhcpHlprCreateV4Policy.argtypes = [
    wintypes.LPCWSTR,  # PolicyName : LPWSTR
    wintypes.BOOL,  # fGlobalPolicy : BOOL
    wintypes.DWORD,  # Subnet : DWORD
    wintypes.DWORD,  # ProcessingOrder : DWORD
    ctypes.c_int,  # RootOperator : DHCP_POL_LOGIC_OPER
    wintypes.LPCWSTR,  # Description : LPWSTR
    wintypes.BOOL,  # Enabled : BOOL
    ctypes.c_void_p,  # Policy : DHCP_POLICY** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpHlprCreateV4Policy = Fiddle::Function.new(
  lib['DhcpHlprCreateV4Policy'],
  [
    Fiddle::TYPE_VOIDP,  # PolicyName : LPWSTR
    Fiddle::TYPE_INT,  # fGlobalPolicy : BOOL
    -Fiddle::TYPE_INT,  # Subnet : DWORD
    -Fiddle::TYPE_INT,  # ProcessingOrder : DWORD
    Fiddle::TYPE_INT,  # RootOperator : DHCP_POL_LOGIC_OPER
    Fiddle::TYPE_VOIDP,  # Description : LPWSTR
    Fiddle::TYPE_INT,  # Enabled : BOOL
    Fiddle::TYPE_VOIDP,  # Policy : DHCP_POLICY** out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpHlprCreateV4Policy(
        PolicyName: *mut u16,  // LPWSTR
        fGlobalPolicy: i32,  // BOOL
        Subnet: u32,  // DWORD
        ProcessingOrder: u32,  // DWORD
        RootOperator: i32,  // DHCP_POL_LOGIC_OPER
        Description: *mut u16,  // LPWSTR
        Enabled: i32,  // BOOL
        Policy: *mut *mut DHCP_POLICY  // DHCP_POLICY** out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpHlprCreateV4Policy([MarshalAs(UnmanagedType.LPWStr)] string PolicyName, bool fGlobalPolicy, uint Subnet, uint ProcessingOrder, int RootOperator, [MarshalAs(UnmanagedType.LPWStr)] string Description, bool Enabled, IntPtr Policy);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpHlprCreateV4Policy' -Namespace Win32 -PassThru
# $api::DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)

#uselib "DHCPSAPI.dll"
#func global DhcpHlprCreateV4Policy "DhcpHlprCreateV4Policy" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DhcpHlprCreateV4Policy PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, varptr(Policy)   ; 戻り値は stat
; PolicyName : LPWSTR -> "sptr"
; fGlobalPolicy : BOOL -> "sptr"
; Subnet : DWORD -> "sptr"
; ProcessingOrder : DWORD -> "sptr"
; RootOperator : DHCP_POL_LOGIC_OPER -> "sptr"
; Description : LPWSTR -> "sptr"
; Enabled : BOOL -> "sptr"
; Policy : DHCP_POLICY** 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 "DHCPSAPI.dll"
#cfunc global DhcpHlprCreateV4Policy "DhcpHlprCreateV4Policy" wstr, int, int, int, int, wstr, int, var
; res = DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
; PolicyName : LPWSTR -> "wstr"
; fGlobalPolicy : BOOL -> "int"
; Subnet : DWORD -> "int"
; ProcessingOrder : DWORD -> "int"
; RootOperator : DHCP_POL_LOGIC_OPER -> "int"
; Description : LPWSTR -> "wstr"
; Enabled : BOOL -> "int"
; Policy : DHCP_POLICY** 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 "DHCPSAPI.dll"
#cfunc global DhcpHlprCreateV4Policy "DhcpHlprCreateV4Policy" wstr, int, int, int, int, wstr, int, sptr
; res = DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, varptr(Policy))
; PolicyName : LPWSTR -> "wstr"
; fGlobalPolicy : BOOL -> "int"
; Subnet : DWORD -> "int"
; ProcessingOrder : DWORD -> "int"
; RootOperator : DHCP_POL_LOGIC_OPER -> "int"
; Description : LPWSTR -> "wstr"
; Enabled : BOOL -> "int"
; Policy : DHCP_POLICY** 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 DhcpHlprCreateV4Policy(LPWSTR PolicyName, BOOL fGlobalPolicy, DWORD Subnet, DWORD ProcessingOrder, DHCP_POL_LOGIC_OPER RootOperator, LPWSTR Description, BOOL Enabled, DHCP_POLICY** Policy)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpHlprCreateV4Policy "DhcpHlprCreateV4Policy" wstr, int, int, int, int, wstr, int, var
; res = DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
; PolicyName : LPWSTR -> "wstr"
; fGlobalPolicy : BOOL -> "int"
; Subnet : DWORD -> "int"
; ProcessingOrder : DWORD -> "int"
; RootOperator : DHCP_POL_LOGIC_OPER -> "int"
; Description : LPWSTR -> "wstr"
; Enabled : BOOL -> "int"
; Policy : DHCP_POLICY** 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 DhcpHlprCreateV4Policy(LPWSTR PolicyName, BOOL fGlobalPolicy, DWORD Subnet, DWORD ProcessingOrder, DHCP_POL_LOGIC_OPER RootOperator, LPWSTR Description, BOOL Enabled, DHCP_POLICY** Policy)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpHlprCreateV4Policy "DhcpHlprCreateV4Policy" wstr, int, int, int, int, wstr, int, intptr
; res = DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, varptr(Policy))
; PolicyName : LPWSTR -> "wstr"
; fGlobalPolicy : BOOL -> "int"
; Subnet : DWORD -> "int"
; ProcessingOrder : DWORD -> "int"
; RootOperator : DHCP_POL_LOGIC_OPER -> "int"
; Description : LPWSTR -> "wstr"
; Enabled : BOOL -> "int"
; Policy : DHCP_POLICY** 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 (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpHlprCreateV4Policy = dhcpsapi.NewProc("DhcpHlprCreateV4Policy")
)

// PolicyName (LPWSTR), fGlobalPolicy (BOOL), Subnet (DWORD), ProcessingOrder (DWORD), RootOperator (DHCP_POL_LOGIC_OPER), Description (LPWSTR), Enabled (BOOL), Policy (DHCP_POLICY** out)
r1, _, err := procDhcpHlprCreateV4Policy.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(PolicyName))),
	uintptr(fGlobalPolicy),
	uintptr(Subnet),
	uintptr(ProcessingOrder),
	uintptr(RootOperator),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Description))),
	uintptr(Enabled),
	uintptr(Policy),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpHlprCreateV4Policy(
  PolicyName: PWideChar;   // LPWSTR
  fGlobalPolicy: BOOL;   // BOOL
  Subnet: DWORD;   // DWORD
  ProcessingOrder: DWORD;   // DWORD
  RootOperator: Integer;   // DHCP_POL_LOGIC_OPER
  Description: PWideChar;   // LPWSTR
  Enabled: BOOL;   // BOOL
  Policy: Pointer   // DHCP_POLICY** out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpHlprCreateV4Policy';

result := DllCall("DHCPSAPI\DhcpHlprCreateV4Policy"
    , "WStr", PolicyName   ; LPWSTR
    , "Int", fGlobalPolicy   ; BOOL
    , "UInt", Subnet   ; DWORD
    , "UInt", ProcessingOrder   ; DWORD
    , "Int", RootOperator   ; DHCP_POL_LOGIC_OPER
    , "WStr", Description   ; LPWSTR
    , "Int", Enabled   ; BOOL
    , "Ptr", Policy   ; DHCP_POLICY** out
    , "UInt")   ; return: DWORD

●DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy) = DLL("DHCPSAPI.dll", "dword DhcpHlprCreateV4Policy(char*, bool, dword, dword, int, char*, bool, void*)")
# 呼び出し: DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
# PolicyName : LPWSTR -> "char*"
# fGlobalPolicy : BOOL -> "bool"
# Subnet : DWORD -> "dword"
# ProcessingOrder : DWORD -> "dword"
# RootOperator : DHCP_POL_LOGIC_OPER -> "int"
# Description : LPWSTR -> "char*"
# Enabled : BOOL -> "bool"
# Policy : DHCP_POLICY** 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 "dhcpsapi" fn DhcpHlprCreateV4Policy(
    PolicyName: [*c]const u16, // LPWSTR
    fGlobalPolicy: i32, // BOOL
    Subnet: u32, // DWORD
    ProcessingOrder: u32, // DWORD
    RootOperator: i32, // DHCP_POL_LOGIC_OPER
    Description: [*c]const u16, // LPWSTR
    Enabled: i32, // BOOL
    Policy: [*c][*c]DHCP_POLICY // DHCP_POLICY** out
) callconv(std.os.windows.WINAPI) u32;

proc DhcpHlprCreateV4Policy(
    PolicyName: WideCString,  # LPWSTR
    fGlobalPolicy: int32,  # BOOL
    Subnet: uint32,  # DWORD
    ProcessingOrder: uint32,  # DWORD
    RootOperator: int32,  # DHCP_POL_LOGIC_OPER
    Description: WideCString,  # LPWSTR
    Enabled: int32,  # BOOL
    Policy: ptr DHCP_POLICY  # DHCP_POLICY** out
): uint32 {.importc: "DhcpHlprCreateV4Policy", stdcall, dynlib: "DHCPSAPI.dll".}

pragma(lib, "dhcpsapi");
extern(Windows)
uint DhcpHlprCreateV4Policy(
    const(wchar)* PolicyName,   // LPWSTR
    int fGlobalPolicy,   // BOOL
    uint Subnet,   // DWORD
    uint ProcessingOrder,   // DWORD
    int RootOperator,   // DHCP_POL_LOGIC_OPER
    const(wchar)* Description,   // LPWSTR
    int Enabled,   // BOOL
    DHCP_POLICY** Policy   // DHCP_POLICY** out
);

ccall((:DhcpHlprCreateV4Policy, "DHCPSAPI.dll"), stdcall, UInt32,
      (Cwstring, Int32, UInt32, UInt32, Int32, Cwstring, Int32, Ptr{DHCP_POLICY}),
      PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
# PolicyName : LPWSTR -> Cwstring
# fGlobalPolicy : BOOL -> Int32
# Subnet : DWORD -> UInt32
# ProcessingOrder : DWORD -> UInt32
# RootOperator : DHCP_POL_LOGIC_OPER -> Int32
# Description : LPWSTR -> Cwstring
# Enabled : BOOL -> Int32
# Policy : DHCP_POLICY** out -> Ptr{DHCP_POLICY}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t DhcpHlprCreateV4Policy(
    const uint16_t* PolicyName,
    int32_t fGlobalPolicy,
    uint32_t Subnet,
    uint32_t ProcessingOrder,
    int32_t RootOperator,
    const uint16_t* Description,
    int32_t Enabled,
    void* Policy);
]]
local dhcpsapi = ffi.load("dhcpsapi")
-- dhcpsapi.DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
-- PolicyName : LPWSTR
-- fGlobalPolicy : BOOL
-- Subnet : DWORD
-- ProcessingOrder : DWORD
-- RootOperator : DHCP_POL_LOGIC_OPER
-- Description : LPWSTR
-- Enabled : BOOL
-- Policy : DHCP_POLICY** 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('DHCPSAPI.dll');
const DhcpHlprCreateV4Policy = lib.func('__stdcall', 'DhcpHlprCreateV4Policy', 'uint32_t', ['str16', 'int32_t', 'uint32_t', 'uint32_t', 'int32_t', 'str16', 'int32_t', 'void *']);
// DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
// PolicyName : LPWSTR -> 'str16'
// fGlobalPolicy : BOOL -> 'int32_t'
// Subnet : DWORD -> 'uint32_t'
// ProcessingOrder : DWORD -> 'uint32_t'
// RootOperator : DHCP_POL_LOGIC_OPER -> 'int32_t'
// Description : LPWSTR -> 'str16'
// Enabled : BOOL -> 'int32_t'
// Policy : DHCP_POLICY** 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("DHCPSAPI.dll", {
  DhcpHlprCreateV4Policy: { parameters: ["buffer", "i32", "u32", "u32", "i32", "buffer", "i32", "pointer"], result: "u32" },
});
// lib.symbols.DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy)
// PolicyName : LPWSTR -> "buffer"
// fGlobalPolicy : BOOL -> "i32"
// Subnet : DWORD -> "u32"
// ProcessingOrder : DWORD -> "u32"
// RootOperator : DHCP_POL_LOGIC_OPER -> "i32"
// Description : LPWSTR -> "buffer"
// Enabled : BOOL -> "i32"
// Policy : DHCP_POLICY** 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 DhcpHlprCreateV4Policy(
    const uint16_t* PolicyName,
    int32_t fGlobalPolicy,
    uint32_t Subnet,
    uint32_t ProcessingOrder,
    int32_t RootOperator,
    const uint16_t* Description,
    int32_t Enabled,
    void* Policy);
C, "DHCPSAPI.dll");
// $ffi->DhcpHlprCreateV4Policy(PolicyName, fGlobalPolicy, Subnet, ProcessingOrder, RootOperator, Description, Enabled, Policy);
// PolicyName : LPWSTR
// fGlobalPolicy : BOOL
// Subnet : DWORD
// ProcessingOrder : DWORD
// RootOperator : DHCP_POL_LOGIC_OPER
// Description : LPWSTR
// Enabled : BOOL
// Policy : DHCP_POLICY** 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 Dhcpsapi extends StdCallLibrary {
    Dhcpsapi INSTANCE = Native.load("dhcpsapi", Dhcpsapi.class);
    int DhcpHlprCreateV4Policy(
        WString PolicyName,   // LPWSTR
        boolean fGlobalPolicy,   // BOOL
        int Subnet,   // DWORD
        int ProcessingOrder,   // DWORD
        int RootOperator,   // DHCP_POL_LOGIC_OPER
        WString Description,   // LPWSTR
        boolean Enabled,   // BOOL
        Pointer Policy   // DHCP_POLICY** out
    );
}

@[Link("dhcpsapi")]
lib LibDHCPSAPI
  fun DhcpHlprCreateV4Policy = DhcpHlprCreateV4Policy(
    PolicyName : UInt16*,   # LPWSTR
    fGlobalPolicy : Int32,   # BOOL
    Subnet : UInt32,   # DWORD
    ProcessingOrder : UInt32,   # DWORD
    RootOperator : Int32,   # DHCP_POL_LOGIC_OPER
    Description : UInt16*,   # LPWSTR
    Enabled : Int32,   # BOOL
    Policy : DHCP_POLICY**   # DHCP_POLICY** 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 DhcpHlprCreateV4PolicyNative = Uint32 Function(Pointer<Utf16>, Int32, Uint32, Uint32, Int32, Pointer<Utf16>, Int32, Pointer<Void>);
typedef DhcpHlprCreateV4PolicyDart = int Function(Pointer<Utf16>, int, int, int, int, Pointer<Utf16>, int, Pointer<Void>);
final DhcpHlprCreateV4Policy = DynamicLibrary.open('DHCPSAPI.dll')
    .lookupFunction<DhcpHlprCreateV4PolicyNative, DhcpHlprCreateV4PolicyDart>('DhcpHlprCreateV4Policy');
// PolicyName : LPWSTR -> Pointer<Utf16>
// fGlobalPolicy : BOOL -> Int32
// Subnet : DWORD -> Uint32
// ProcessingOrder : DWORD -> Uint32
// RootOperator : DHCP_POL_LOGIC_OPER -> Int32
// Description : LPWSTR -> Pointer<Utf16>
// Enabled : BOOL -> Int32
// Policy : DHCP_POLICY** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DhcpHlprCreateV4Policy(
  PolicyName: PWideChar;   // LPWSTR
  fGlobalPolicy: BOOL;   // BOOL
  Subnet: DWORD;   // DWORD
  ProcessingOrder: DWORD;   // DWORD
  RootOperator: Integer;   // DHCP_POL_LOGIC_OPER
  Description: PWideChar;   // LPWSTR
  Enabled: BOOL;   // BOOL
  Policy: Pointer   // DHCP_POLICY** out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpHlprCreateV4Policy';

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

foreign import stdcall safe "DhcpHlprCreateV4Policy"
  c_DhcpHlprCreateV4Policy :: CWString -> CInt -> Word32 -> Word32 -> Int32 -> CWString -> CInt -> Ptr () -> IO Word32
-- PolicyName : LPWSTR -> CWString
-- fGlobalPolicy : BOOL -> CInt
-- Subnet : DWORD -> Word32
-- ProcessingOrder : DWORD -> Word32
-- RootOperator : DHCP_POL_LOGIC_OPER -> Int32
-- Description : LPWSTR -> CWString
-- Enabled : BOOL -> CInt
-- Policy : DHCP_POLICY** 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 dhcphlprcreatev4policy =
  foreign "DhcpHlprCreateV4Policy"
    ((ptr uint16_t) @-> int32_t @-> uint32_t @-> uint32_t @-> int32_t @-> (ptr uint16_t) @-> int32_t @-> (ptr void) @-> returning uint32_t)
(* PolicyName : LPWSTR -> (ptr uint16_t) *)
(* fGlobalPolicy : BOOL -> int32_t *)
(* Subnet : DWORD -> uint32_t *)
(* ProcessingOrder : DWORD -> uint32_t *)
(* RootOperator : DHCP_POL_LOGIC_OPER -> int32_t *)
(* Description : LPWSTR -> (ptr uint16_t) *)
(* Enabled : BOOL -> int32_t *)
(* Policy : DHCP_POLICY** 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 dhcpsapi (t "DHCPSAPI.dll"))
(cffi:use-foreign-library dhcpsapi)

(cffi:defcfun ("DhcpHlprCreateV4Policy" dhcp-hlpr-create-v4-policy :convention :stdcall) :uint32
  (policy-name (:string :encoding :utf-16le))   ; LPWSTR
  (f-global-policy :int32)   ; BOOL
  (subnet :uint32)   ; DWORD
  (processing-order :uint32)   ; DWORD
  (root-operator :int32)   ; DHCP_POL_LOGIC_OPER
  (description (:string :encoding :utf-16le))   ; LPWSTR
  (enabled :int32)   ; BOOL
  (policy :pointer))   ; DHCP_POLICY** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DhcpHlprCreateV4Policy = Win32::API::More->new('DHCPSAPI',
    'DWORD DhcpHlprCreateV4Policy(LPCWSTR PolicyName, BOOL fGlobalPolicy, DWORD Subnet, DWORD ProcessingOrder, int RootOperator, LPCWSTR Description, BOOL Enabled, LPVOID Policy)');
# my $ret = $DhcpHlprCreateV4Policy->Call($PolicyName, $fGlobalPolicy, $Subnet, $ProcessingOrder, $RootOperator, $Description, $Enabled, $Policy);
# PolicyName : LPWSTR -> LPCWSTR
# fGlobalPolicy : BOOL -> BOOL
# Subnet : DWORD -> DWORD
# ProcessingOrder : DWORD -> DWORD
# RootOperator : DHCP_POL_LOGIC_OPER -> int
# Description : LPWSTR -> LPCWSTR
# Enabled : BOOL -> BOOL
# Policy : DHCP_POLICY** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

DhcpHlprCreateV4Policy

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