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DnsQuery_A
関数ANSI文字列名でDNS問い合わせを実行しレコードを取得する。
シグネチャ
// DNSAPI.dll (ANSI / -A)
#include <windows.h>
WIN32_ERROR DnsQuery_A(
LPCSTR pszName,
WORD wType,
DNS_QUERY_OPTIONS Options,
void* pExtra, // optional
DNS_RECORDA** ppQueryResults,
void** pReserved // optional
);パラメーター
| 名前 | 型 | 方向 | 説明 |
|---|---|---|---|
| pszName | LPCSTR | in | 問い合わせるDNS名を表すANSI文字列へのポインタ。終端NULL文字列。 |
| wType | WORD | in | 問い合わせるDNSレコード種別を示すWORD値。DNS_TYPE_A等を指定する。 |
| Options | DNS_QUERY_OPTIONS | in | 問い合わせ動作を制御するDNS_QUERY_OPTIONSフラグ。キャッシュ無効化やTCP優先等を指定する。 |
| pExtra | void* | inoutoptional | DNSサーバー一覧などの追加情報へのポインタ。未使用時はNULL可。 |
| ppQueryResults | DNS_RECORDA** | out | 取得したDNSレコードリストを受け取るポインタのアドレス。DnsFreeで解放する。 |
| pReserved | void** | outoptional | 予約済みパラメータ。NULLを指定する。 |
戻り値の型: WIN32_ERROR
各言語での呼び出し定義
// DNSAPI.dll (ANSI / -A)
#include <windows.h>
WIN32_ERROR DnsQuery_A(
LPCSTR pszName,
WORD wType,
DNS_QUERY_OPTIONS Options,
void* pExtra, // optional
DNS_RECORDA** ppQueryResults,
void** pReserved // optional
);[DllImport("DNSAPI.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern uint DnsQuery_A(
[MarshalAs(UnmanagedType.LPStr)] string pszName, // LPCSTR
ushort wType, // WORD
uint Options, // DNS_QUERY_OPTIONS
IntPtr pExtra, // void* optional, in/out
IntPtr ppQueryResults, // DNS_RECORDA** out
IntPtr pReserved // void** optional, out
);<DllImport("DNSAPI.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function DnsQuery_A(
<MarshalAs(UnmanagedType.LPStr)> pszName As String, ' LPCSTR
wType As UShort, ' WORD
Options As UInteger, ' DNS_QUERY_OPTIONS
pExtra As IntPtr, ' void* optional, in/out
ppQueryResults As IntPtr, ' DNS_RECORDA** out
pReserved As IntPtr ' void** optional, out
) As UInteger
End Function' pszName : LPCSTR
' wType : WORD
' Options : DNS_QUERY_OPTIONS
' pExtra : void* optional, in/out
' ppQueryResults : DNS_RECORDA** out
' pReserved : void** optional, out
Declare PtrSafe Function DnsQuery_A Lib "dnsapi" ( _
ByVal pszName As String, _
ByVal wType As Integer, _
ByVal Options As Long, _
ByVal pExtra As LongPtr, _
ByVal ppQueryResults As LongPtr, _
ByVal pReserved 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
DnsQuery_A = ctypes.windll.dnsapi.DnsQuery_A
DnsQuery_A.restype = wintypes.DWORD
DnsQuery_A.argtypes = [
wintypes.LPCSTR, # pszName : LPCSTR
ctypes.c_ushort, # wType : WORD
wintypes.DWORD, # Options : DNS_QUERY_OPTIONS
ctypes.POINTER(None), # pExtra : void* optional, in/out
ctypes.c_void_p, # ppQueryResults : DNS_RECORDA** out
ctypes.c_void_p, # pReserved : void** optional, out
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('DNSAPI.dll')
DnsQuery_A = Fiddle::Function.new(
lib['DnsQuery_A'],
[
Fiddle::TYPE_VOIDP, # pszName : LPCSTR
-Fiddle::TYPE_SHORT, # wType : WORD
-Fiddle::TYPE_INT, # Options : DNS_QUERY_OPTIONS
Fiddle::TYPE_VOIDP, # pExtra : void* optional, in/out
Fiddle::TYPE_VOIDP, # ppQueryResults : DNS_RECORDA** out
Fiddle::TYPE_VOIDP, # pReserved : void** optional, out
],
-Fiddle::TYPE_INT)#[link(name = "dnsapi")]
extern "system" {
fn DnsQuery_A(
pszName: *const u8, // LPCSTR
wType: u16, // WORD
Options: u32, // DNS_QUERY_OPTIONS
pExtra: *mut (), // void* optional, in/out
ppQueryResults: *mut *mut DNS_RECORDA, // DNS_RECORDA** out
pReserved: *mut *mut () // void** optional, out
) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[DllImport("DNSAPI.dll", CharSet = CharSet.Ansi)]
public static extern uint DnsQuery_A([MarshalAs(UnmanagedType.LPStr)] string pszName, ushort wType, uint Options, IntPtr pExtra, IntPtr ppQueryResults, IntPtr pReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DNSAPI_DnsQuery_A' -Namespace Win32 -PassThru
# $api::DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved)#uselib "DNSAPI.dll"
#func global DnsQuery_A "DnsQuery_A" sptr, sptr, sptr, sptr, sptr, sptr
; DnsQuery_A pszName, wType, Options, pExtra, varptr(ppQueryResults), pReserved ; 戻り値は stat
; pszName : LPCSTR -> "sptr"
; wType : WORD -> "sptr"
; Options : DNS_QUERY_OPTIONS -> "sptr"
; pExtra : void* optional, in/out -> "sptr"
; ppQueryResults : DNS_RECORDA** out -> "sptr"
; pReserved : void** optional, 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 "DNSAPI.dll" #cfunc global DnsQuery_A "DnsQuery_A" str, int, int, sptr, var, sptr ; res = DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved) ; pszName : LPCSTR -> "str" ; wType : WORD -> "int" ; Options : DNS_QUERY_OPTIONS -> "int" ; pExtra : void* optional, in/out -> "sptr" ; ppQueryResults : DNS_RECORDA** out -> "var" ; pReserved : void** optional, out -> "sptr" ; ※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 "DNSAPI.dll" #cfunc global DnsQuery_A "DnsQuery_A" str, int, int, sptr, sptr, sptr ; res = DnsQuery_A(pszName, wType, Options, pExtra, varptr(ppQueryResults), pReserved) ; pszName : LPCSTR -> "str" ; wType : WORD -> "int" ; Options : DNS_QUERY_OPTIONS -> "int" ; pExtra : void* optional, in/out -> "sptr" ; ppQueryResults : DNS_RECORDA** out -> "sptr" ; pReserved : void** optional, 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:
; WIN32_ERROR DnsQuery_A(LPCSTR pszName, WORD wType, DNS_QUERY_OPTIONS Options, void* pExtra, DNS_RECORDA** ppQueryResults, void** pReserved) #uselib "DNSAPI.dll" #cfunc global DnsQuery_A "DnsQuery_A" str, int, int, intptr, var, intptr ; res = DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved) ; pszName : LPCSTR -> "str" ; wType : WORD -> "int" ; Options : DNS_QUERY_OPTIONS -> "int" ; pExtra : void* optional, in/out -> "intptr" ; ppQueryResults : DNS_RECORDA** out -> "var" ; pReserved : void** optional, out -> "intptr" ; ※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。; WIN32_ERROR DnsQuery_A(LPCSTR pszName, WORD wType, DNS_QUERY_OPTIONS Options, void* pExtra, DNS_RECORDA** ppQueryResults, void** pReserved) #uselib "DNSAPI.dll" #cfunc global DnsQuery_A "DnsQuery_A" str, int, int, intptr, intptr, intptr ; res = DnsQuery_A(pszName, wType, Options, pExtra, varptr(ppQueryResults), pReserved) ; pszName : LPCSTR -> "str" ; wType : WORD -> "int" ; Options : DNS_QUERY_OPTIONS -> "int" ; pExtra : void* optional, in/out -> "intptr" ; ppQueryResults : DNS_RECORDA** out -> "intptr" ; pReserved : void** optional, 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 (
dnsapi = windows.NewLazySystemDLL("DNSAPI.dll")
procDnsQuery_A = dnsapi.NewProc("DnsQuery_A")
)
// pszName (LPCSTR), wType (WORD), Options (DNS_QUERY_OPTIONS), pExtra (void* optional, in/out), ppQueryResults (DNS_RECORDA** out), pReserved (void** optional, out)
r1, _, err := procDnsQuery_A.Call(
uintptr(unsafe.Pointer(windows.BytePtrFromString(pszName))),
uintptr(wType),
uintptr(Options),
uintptr(pExtra),
uintptr(ppQueryResults),
uintptr(pReserved),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // WIN32_ERRORfunction DnsQuery_A(
pszName: PAnsiChar; // LPCSTR
wType: Word; // WORD
Options: DWORD; // DNS_QUERY_OPTIONS
pExtra: Pointer; // void* optional, in/out
ppQueryResults: Pointer; // DNS_RECORDA** out
pReserved: Pointer // void** optional, out
): DWORD; stdcall;
external 'DNSAPI.dll' name 'DnsQuery_A';result := DllCall("DNSAPI\DnsQuery_A"
, "AStr", pszName ; LPCSTR
, "UShort", wType ; WORD
, "UInt", Options ; DNS_QUERY_OPTIONS
, "Ptr", pExtra ; void* optional, in/out
, "Ptr", ppQueryResults ; DNS_RECORDA** out
, "Ptr", pReserved ; void** optional, out
, "UInt") ; return: WIN32_ERROR●DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved) = DLL("DNSAPI.dll", "dword DnsQuery_A(char*, int, dword, void*, void*, void*)")
# 呼び出し: DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
# pszName : LPCSTR -> "char*"
# wType : WORD -> "int"
# Options : DNS_QUERY_OPTIONS -> "dword"
# pExtra : void* optional, in/out -> "void*"
# ppQueryResults : DNS_RECORDA** out -> "void*"
# pReserved : void** optional, 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 "dnsapi" fn DnsQuery_A(
pszName: [*c]const u8, // LPCSTR
wType: u16, // WORD
Options: u32, // DNS_QUERY_OPTIONS
pExtra: ?*anyopaque, // void* optional, in/out
ppQueryResults: [*c][*c]DNS_RECORDA, // DNS_RECORDA** out
pReserved: ?*anyopaque // void** optional, out
) callconv(std.os.windows.WINAPI) u32;proc DnsQuery_A(
pszName: cstring, # LPCSTR
wType: uint16, # WORD
Options: uint32, # DNS_QUERY_OPTIONS
pExtra: pointer, # void* optional, in/out
ppQueryResults: ptr DNS_RECORDA, # DNS_RECORDA** out
pReserved: pointer # void** optional, out
): uint32 {.importc: "DnsQuery_A", stdcall, dynlib: "DNSAPI.dll".}pragma(lib, "dnsapi");
extern(Windows)
uint DnsQuery_A(
const(char)* pszName, // LPCSTR
ushort wType, // WORD
uint Options, // DNS_QUERY_OPTIONS
void* pExtra, // void* optional, in/out
DNS_RECORDA** ppQueryResults, // DNS_RECORDA** out
void** pReserved // void** optional, out
);ccall((:DnsQuery_A, "DNSAPI.dll"), stdcall, UInt32,
(Cstring, UInt16, UInt32, Ptr{Cvoid}, Ptr{DNS_RECORDA}, Ptr{Cvoid}),
pszName, wType, Options, pExtra, ppQueryResults, pReserved)
# pszName : LPCSTR -> Cstring
# wType : WORD -> UInt16
# Options : DNS_QUERY_OPTIONS -> UInt32
# pExtra : void* optional, in/out -> Ptr{Cvoid}
# ppQueryResults : DNS_RECORDA** out -> Ptr{DNS_RECORDA}
# pReserved : void** optional, out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。local ffi = require("ffi")
ffi.cdef[[
uint32_t DnsQuery_A(
const char* pszName,
uint16_t wType,
uint32_t Options,
void* pExtra,
void* ppQueryResults,
void** pReserved);
]]
local dnsapi = ffi.load("dnsapi")
-- dnsapi.DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
-- pszName : LPCSTR
-- wType : WORD
-- Options : DNS_QUERY_OPTIONS
-- pExtra : void* optional, in/out
-- ppQueryResults : DNS_RECORDA** out
-- pReserved : void** optional, 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('DNSAPI.dll');
const DnsQuery_A = lib.func('__stdcall', 'DnsQuery_A', 'uint32_t', ['str', 'uint16_t', 'uint32_t', 'void *', 'void *', 'void *']);
// DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
// pszName : LPCSTR -> 'str'
// wType : WORD -> 'uint16_t'
// Options : DNS_QUERY_OPTIONS -> 'uint32_t'
// pExtra : void* optional, in/out -> 'void *'
// ppQueryResults : DNS_RECORDA** out -> 'void *'
// pReserved : void** optional, 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("DNSAPI.dll", {
DnsQuery_A: { parameters: ["buffer", "u16", "u32", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
// pszName : LPCSTR -> "buffer"
// wType : WORD -> "u16"
// Options : DNS_QUERY_OPTIONS -> "u32"
// pExtra : void* optional, in/out -> "pointer"
// ppQueryResults : DNS_RECORDA** out -> "pointer"
// pReserved : void** optional, 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
uint32_t DnsQuery_A(
const char* pszName,
uint16_t wType,
uint32_t Options,
void* pExtra,
void* ppQueryResults,
void** pReserved);
C, "DNSAPI.dll");
// $ffi->DnsQuery_A(pszName, wType, Options, pExtra, ppQueryResults, pReserved);
// pszName : LPCSTR
// wType : WORD
// Options : DNS_QUERY_OPTIONS
// pExtra : void* optional, in/out
// ppQueryResults : DNS_RECORDA** out
// pReserved : void** optional, 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 Dnsapi extends StdCallLibrary {
Dnsapi INSTANCE = Native.load("dnsapi", Dnsapi.class, W32APIOptions.ASCII_OPTIONS);
int DnsQuery_A(
String pszName, // LPCSTR
short wType, // WORD
int Options, // DNS_QUERY_OPTIONS
Pointer pExtra, // void* optional, in/out
Pointer ppQueryResults, // DNS_RECORDA** out
Pointer pReserved // void** optional, out
);
}@[Link("dnsapi")]
lib LibDNSAPI
fun DnsQuery_A = DnsQuery_A(
pszName : UInt8*, # LPCSTR
wType : UInt16, # WORD
Options : UInt32, # DNS_QUERY_OPTIONS
pExtra : Void*, # void* optional, in/out
ppQueryResults : DNS_RECORDA**, # DNS_RECORDA** out
pReserved : Void** # void** optional, 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 DnsQuery_ANative = Uint32 Function(Pointer<Utf8>, Uint16, Uint32, Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef DnsQuery_ADart = int Function(Pointer<Utf8>, int, int, Pointer<Void>, Pointer<Void>, Pointer<Void>);
final DnsQuery_A = DynamicLibrary.open('DNSAPI.dll')
.lookupFunction<DnsQuery_ANative, DnsQuery_ADart>('DnsQuery_A');
// pszName : LPCSTR -> Pointer<Utf8>
// wType : WORD -> Uint16
// Options : DNS_QUERY_OPTIONS -> Uint32
// pExtra : void* optional, in/out -> Pointer<Void>
// ppQueryResults : DNS_RECORDA** out -> Pointer<Void>
// pReserved : void** optional, out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。{$mode objfpc}{$H+}
function DnsQuery_A(
pszName: PAnsiChar; // LPCSTR
wType: Word; // WORD
Options: DWORD; // DNS_QUERY_OPTIONS
pExtra: Pointer; // void* optional, in/out
ppQueryResults: Pointer; // DNS_RECORDA** out
pReserved: Pointer // void** optional, out
): DWORD; stdcall;
external 'DNSAPI.dll' name 'DnsQuery_A';import Foreign
import Foreign.C.Types
import Foreign.C.String
foreign import stdcall safe "DnsQuery_A"
c_DnsQuery_A :: CString -> Word16 -> Word32 -> Ptr () -> Ptr () -> Ptr () -> IO Word32
-- pszName : LPCSTR -> CString
-- wType : WORD -> Word16
-- Options : DNS_QUERY_OPTIONS -> Word32
-- pExtra : void* optional, in/out -> Ptr ()
-- ppQueryResults : DNS_RECORDA** out -> Ptr ()
-- pReserved : void** optional, 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 dnsquery_a =
foreign "DnsQuery_A"
(string @-> uint16_t @-> uint32_t @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> returning uint32_t)
(* pszName : LPCSTR -> string *)
(* wType : WORD -> uint16_t *)
(* Options : DNS_QUERY_OPTIONS -> uint32_t *)
(* pExtra : void* optional, in/out -> (ptr void) *)
(* ppQueryResults : DNS_RECORDA** out -> (ptr void) *)
(* pReserved : void** optional, 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 dnsapi (t "DNSAPI.dll"))
(cffi:use-foreign-library dnsapi)
(cffi:defcfun ("DnsQuery_A" dns-query-a :convention :stdcall) :uint32
(psz-name :string) ; LPCSTR
(w-type :uint16) ; WORD
(options :uint32) ; DNS_QUERY_OPTIONS
(p-extra :pointer) ; void* optional, in/out
(pp-query-results :pointer) ; DNS_RECORDA** out
(p-reserved :pointer)) ; void** optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。use Win32::API;
my $DnsQuery_A = Win32::API::More->new('DNSAPI',
'DWORD DnsQuery_A(LPCSTR pszName, WORD wType, DWORD Options, LPVOID pExtra, LPVOID ppQueryResults, LPVOID pReserved)');
# my $ret = $DnsQuery_A->Call($pszName, $wType, $Options, $pExtra, $ppQueryResults, $pReserved);
# pszName : LPCSTR -> LPCSTR
# wType : WORD -> WORD
# Options : DNS_QUERY_OPTIONS -> DWORD
# pExtra : void* optional, in/out -> LPVOID
# ppQueryResults : DNS_RECORDA** out -> LPVOID
# pReserved : void** optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。関連項目
文字セット違い
- f DnsQuery_W (Unicode版) — Unicode文字列名でDNS問い合わせを実行しレコードを取得する。