ホーム › Networking.WinSock › RtlIpv4AddressToStringA

RtlIpv4AddressToStringA

関数

IPv4アドレスをドット区切り文字列へ変換する。

DLLntdll.dll文字セットANSI (-A)呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

LPSTR RtlIpv4AddressToStringA(
    const IN_ADDR* Addr,
    LPSTR S
);

パラメーター

名前	型	方向
Addr	IN_ADDR*	in
S	LPSTR	out

戻り値の型: LPSTR

各言語での呼び出し定義

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

LPSTR RtlIpv4AddressToStringA(
    const IN_ADDR* Addr,
    LPSTR S
);

[DllImport("ntdll.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern IntPtr RtlIpv4AddressToStringA(
    IntPtr Addr,   // IN_ADDR*
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder S   // LPSTR out
);

<DllImport("ntdll.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function RtlIpv4AddressToStringA(
    Addr As IntPtr,   ' IN_ADDR*
    <MarshalAs(UnmanagedType.LPStr)> S As System.Text.StringBuilder   ' LPSTR out
) As IntPtr
End Function

' Addr : IN_ADDR*
' S : LPSTR out
Declare PtrSafe Function RtlIpv4AddressToStringA Lib "ntdll" ( _
    ByVal Addr As LongPtr, _
    ByVal S As String) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

RtlIpv4AddressToStringA = ctypes.windll.ntdll.RtlIpv4AddressToStringA
RtlIpv4AddressToStringA.restype = wintypes.LPSTR
RtlIpv4AddressToStringA.argtypes = [
    ctypes.c_void_p,  # Addr : IN_ADDR*
    wintypes.LPSTR,  # S : LPSTR out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ntdll.dll')
RtlIpv4AddressToStringA = Fiddle::Function.new(
  lib['RtlIpv4AddressToStringA'],
  [
    Fiddle::TYPE_VOIDP,  # Addr : IN_ADDR*
    Fiddle::TYPE_VOIDP,  # S : LPSTR out
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "ntdll")]
extern "system" {
    fn RtlIpv4AddressToStringA(
        Addr: *const IN_ADDR,  // IN_ADDR*
        S: *mut u8  // LPSTR out
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ntdll.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr RtlIpv4AddressToStringA(IntPtr Addr, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder S);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ntdll_RtlIpv4AddressToStringA' -Namespace Win32 -PassThru
# $api::RtlIpv4AddressToStringA(Addr, S)

#uselib "ntdll.dll"
#func global RtlIpv4AddressToStringA "RtlIpv4AddressToStringA" sptr, sptr
; RtlIpv4AddressToStringA varptr(Addr), varptr(S)   ; 戻り値は stat
; Addr : IN_ADDR* -> "sptr"
; S : LPSTR 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 "ntdll.dll"
#cfunc global RtlIpv4AddressToStringA "RtlIpv4AddressToStringA" var, var
; res = RtlIpv4AddressToStringA(Addr, S)
; Addr : IN_ADDR* -> "var"
; S : LPSTR 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 "ntdll.dll"
#cfunc global RtlIpv4AddressToStringA "RtlIpv4AddressToStringA" sptr, sptr
; res = RtlIpv4AddressToStringA(varptr(Addr), varptr(S))
; Addr : IN_ADDR* -> "sptr"
; S : LPSTR 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:

; LPSTR RtlIpv4AddressToStringA(IN_ADDR* Addr, LPSTR S)
#uselib "ntdll.dll"
#cfunc global RtlIpv4AddressToStringA "RtlIpv4AddressToStringA" var, var
; res = RtlIpv4AddressToStringA(Addr, S)
; Addr : IN_ADDR* -> "var"
; S : LPSTR 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。; LPSTR RtlIpv4AddressToStringA(IN_ADDR* Addr, LPSTR S)
#uselib "ntdll.dll"
#cfunc global RtlIpv4AddressToStringA "RtlIpv4AddressToStringA" intptr, intptr
; res = RtlIpv4AddressToStringA(varptr(Addr), varptr(S))
; Addr : IN_ADDR* -> "intptr"
; S : LPSTR 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 (
	ntdll = windows.NewLazySystemDLL("ntdll.dll")
	procRtlIpv4AddressToStringA = ntdll.NewProc("RtlIpv4AddressToStringA")
)

// Addr (IN_ADDR*), S (LPSTR out)
r1, _, err := procRtlIpv4AddressToStringA.Call(
	uintptr(Addr),
	uintptr(S),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function RtlIpv4AddressToStringA(
  Addr: Pointer;   // IN_ADDR*
  S: PAnsiChar   // LPSTR out
): PAnsiChar; stdcall;
  external 'ntdll.dll' name 'RtlIpv4AddressToStringA';

result := DllCall("ntdll\RtlIpv4AddressToStringA"
    , "Ptr", Addr   ; IN_ADDR*
    , "Ptr", S   ; LPSTR out
    , "Ptr")   ; return: LPSTR

●RtlIpv4AddressToStringA(Addr, S) = DLL("ntdll.dll", "char* RtlIpv4AddressToStringA(void*, char*)")
# 呼び出し: RtlIpv4AddressToStringA(Addr, S)
# Addr : IN_ADDR* -> "void*"
# S : LPSTR out -> "char*"
# 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)。