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CredUnPackAuthenticationBufferA

関数

認証バッファからユーザー名・ドメイン・パスワードを取り出す。

DLLcredui.dll文字セットANSI (-A)呼出規約winapiSetLastErrorあり対応OSWindows Vista 以降

シグネチャ

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

BOOL CredUnPackAuthenticationBufferA(
    CRED_PACK_FLAGS dwFlags,
    void* pAuthBuffer,
    DWORD cbAuthBuffer,
    LPSTR pszUserName,   // optional
    DWORD* pcchlMaxUserName,
    LPSTR pszDomainName,   // optional
    DWORD* pcchMaxDomainName,   // optional
    LPSTR pszPassword,   // optional
    DWORD* pcchMaxPassword
);

パラメーター

名前	型	方向
dwFlags	CRED_PACK_FLAGS	in
pAuthBuffer	void*	in
cbAuthBuffer	DWORD	in
pszUserName	LPSTR	outoptional
pcchlMaxUserName	DWORD*	inout
pszDomainName	LPSTR	outoptional
pcchMaxDomainName	DWORD*	inoutoptional
pszPassword	LPSTR	outoptional
pcchMaxPassword	DWORD*	inout

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL CredUnPackAuthenticationBufferA(
    CRED_PACK_FLAGS dwFlags,
    void* pAuthBuffer,
    DWORD cbAuthBuffer,
    LPSTR pszUserName,   // optional
    DWORD* pcchlMaxUserName,
    LPSTR pszDomainName,   // optional
    DWORD* pcchMaxDomainName,   // optional
    LPSTR pszPassword,   // optional
    DWORD* pcchMaxPassword
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("credui.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool CredUnPackAuthenticationBufferA(
    uint dwFlags,   // CRED_PACK_FLAGS
    IntPtr pAuthBuffer,   // void*
    uint cbAuthBuffer,   // DWORD
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszUserName,   // LPSTR optional, out
    ref uint pcchlMaxUserName,   // DWORD* in/out
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszDomainName,   // LPSTR optional, out
    IntPtr pcchMaxDomainName,   // DWORD* optional, in/out
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszPassword,   // LPSTR optional, out
    ref uint pcchMaxPassword   // DWORD* in/out
);

<DllImport("credui.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CredUnPackAuthenticationBufferA(
    dwFlags As UInteger,   ' CRED_PACK_FLAGS
    pAuthBuffer As IntPtr,   ' void*
    cbAuthBuffer As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> pszUserName As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pcchlMaxUserName As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPStr)> pszDomainName As System.Text.StringBuilder,   ' LPSTR optional, out
    pcchMaxDomainName As IntPtr,   ' DWORD* optional, in/out
    <MarshalAs(UnmanagedType.LPStr)> pszPassword As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pcchMaxPassword As UInteger   ' DWORD* in/out
) As Boolean
End Function

' dwFlags : CRED_PACK_FLAGS
' pAuthBuffer : void*
' cbAuthBuffer : DWORD
' pszUserName : LPSTR optional, out
' pcchlMaxUserName : DWORD* in/out
' pszDomainName : LPSTR optional, out
' pcchMaxDomainName : DWORD* optional, in/out
' pszPassword : LPSTR optional, out
' pcchMaxPassword : DWORD* in/out
Declare PtrSafe Function CredUnPackAuthenticationBufferA Lib "credui" ( _
    ByVal dwFlags As Long, _
    ByVal pAuthBuffer As LongPtr, _
    ByVal cbAuthBuffer As Long, _
    ByVal pszUserName As String, _
    ByRef pcchlMaxUserName As Long, _
    ByVal pszDomainName As String, _
    ByVal pcchMaxDomainName As LongPtr, _
    ByVal pszPassword As String, _
    ByRef pcchMaxPassword 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

CredUnPackAuthenticationBufferA = ctypes.windll.credui.CredUnPackAuthenticationBufferA
CredUnPackAuthenticationBufferA.restype = wintypes.BOOL
CredUnPackAuthenticationBufferA.argtypes = [
    wintypes.DWORD,  # dwFlags : CRED_PACK_FLAGS
    ctypes.POINTER(None),  # pAuthBuffer : void*
    wintypes.DWORD,  # cbAuthBuffer : DWORD
    wintypes.LPSTR,  # pszUserName : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchlMaxUserName : DWORD* in/out
    wintypes.LPSTR,  # pszDomainName : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchMaxDomainName : DWORD* optional, in/out
    wintypes.LPSTR,  # pszPassword : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchMaxPassword : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('credui.dll')
CredUnPackAuthenticationBufferA = Fiddle::Function.new(
  lib['CredUnPackAuthenticationBufferA'],
  [
    -Fiddle::TYPE_INT,  # dwFlags : CRED_PACK_FLAGS
    Fiddle::TYPE_VOIDP,  # pAuthBuffer : void*
    -Fiddle::TYPE_INT,  # cbAuthBuffer : DWORD
    Fiddle::TYPE_VOIDP,  # pszUserName : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchlMaxUserName : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pszDomainName : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchMaxDomainName : DWORD* optional, in/out
    Fiddle::TYPE_VOIDP,  # pszPassword : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchMaxPassword : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "credui")]
extern "system" {
    fn CredUnPackAuthenticationBufferA(
        dwFlags: u32,  // CRED_PACK_FLAGS
        pAuthBuffer: *mut (),  // void*
        cbAuthBuffer: u32,  // DWORD
        pszUserName: *mut u8,  // LPSTR optional, out
        pcchlMaxUserName: *mut u32,  // DWORD* in/out
        pszDomainName: *mut u8,  // LPSTR optional, out
        pcchMaxDomainName: *mut u32,  // DWORD* optional, in/out
        pszPassword: *mut u8,  // LPSTR optional, out
        pcchMaxPassword: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("credui.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool CredUnPackAuthenticationBufferA(uint dwFlags, IntPtr pAuthBuffer, uint cbAuthBuffer, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszUserName, ref uint pcchlMaxUserName, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszDomainName, IntPtr pcchMaxDomainName, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszPassword, ref uint pcchMaxPassword);
"@
$api = Add-Type -MemberDefinition $sig -Name 'credui_CredUnPackAuthenticationBufferA' -Namespace Win32 -PassThru
# $api::CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, pszUserName, pcchlMaxUserName, pszDomainName, pcchMaxDomainName, pszPassword, pcchMaxPassword)

#uselib "credui.dll"
#func global CredUnPackAuthenticationBufferA "CredUnPackAuthenticationBufferA" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CredUnPackAuthenticationBufferA dwFlags, pAuthBuffer, cbAuthBuffer, varptr(pszUserName), varptr(pcchlMaxUserName), varptr(pszDomainName), varptr(pcchMaxDomainName), varptr(pszPassword), varptr(pcchMaxPassword)   ; 戻り値は stat
; dwFlags : CRED_PACK_FLAGS -> "sptr"
; pAuthBuffer : void* -> "sptr"
; cbAuthBuffer : DWORD -> "sptr"
; pszUserName : LPSTR optional, out -> "sptr"
; pcchlMaxUserName : DWORD* in/out -> "sptr"
; pszDomainName : LPSTR optional, out -> "sptr"
; pcchMaxDomainName : DWORD* optional, in/out -> "sptr"
; pszPassword : LPSTR optional, out -> "sptr"
; pcchMaxPassword : DWORD* in/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 "credui.dll"
#cfunc global CredUnPackAuthenticationBufferA "CredUnPackAuthenticationBufferA" int, sptr, int, var, var, var, var, var, var
; res = CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, pszUserName, pcchlMaxUserName, pszDomainName, pcchMaxDomainName, pszPassword, pcchMaxPassword)
; dwFlags : CRED_PACK_FLAGS -> "int"
; pAuthBuffer : void* -> "sptr"
; cbAuthBuffer : DWORD -> "int"
; pszUserName : LPSTR optional, out -> "var"
; pcchlMaxUserName : DWORD* in/out -> "var"
; pszDomainName : LPSTR optional, out -> "var"
; pcchMaxDomainName : DWORD* optional, in/out -> "var"
; pszPassword : LPSTR optional, out -> "var"
; pcchMaxPassword : DWORD* in/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 "credui.dll"
#cfunc global CredUnPackAuthenticationBufferA "CredUnPackAuthenticationBufferA" int, sptr, int, sptr, sptr, sptr, sptr, sptr, sptr
; res = CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, varptr(pszUserName), varptr(pcchlMaxUserName), varptr(pszDomainName), varptr(pcchMaxDomainName), varptr(pszPassword), varptr(pcchMaxPassword))
; dwFlags : CRED_PACK_FLAGS -> "int"
; pAuthBuffer : void* -> "sptr"
; cbAuthBuffer : DWORD -> "int"
; pszUserName : LPSTR optional, out -> "sptr"
; pcchlMaxUserName : DWORD* in/out -> "sptr"
; pszDomainName : LPSTR optional, out -> "sptr"
; pcchMaxDomainName : DWORD* optional, in/out -> "sptr"
; pszPassword : LPSTR optional, out -> "sptr"
; pcchMaxPassword : DWORD* in/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:

; BOOL CredUnPackAuthenticationBufferA(CRED_PACK_FLAGS dwFlags, void* pAuthBuffer, DWORD cbAuthBuffer, LPSTR pszUserName, DWORD* pcchlMaxUserName, LPSTR pszDomainName, DWORD* pcchMaxDomainName, LPSTR pszPassword, DWORD* pcchMaxPassword)
#uselib "credui.dll"
#cfunc global CredUnPackAuthenticationBufferA "CredUnPackAuthenticationBufferA" int, intptr, int, var, var, var, var, var, var
; res = CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, pszUserName, pcchlMaxUserName, pszDomainName, pcchMaxDomainName, pszPassword, pcchMaxPassword)
; dwFlags : CRED_PACK_FLAGS -> "int"
; pAuthBuffer : void* -> "intptr"
; cbAuthBuffer : DWORD -> "int"
; pszUserName : LPSTR optional, out -> "var"
; pcchlMaxUserName : DWORD* in/out -> "var"
; pszDomainName : LPSTR optional, out -> "var"
; pcchMaxDomainName : DWORD* optional, in/out -> "var"
; pszPassword : LPSTR optional, out -> "var"
; pcchMaxPassword : DWORD* in/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。; BOOL CredUnPackAuthenticationBufferA(CRED_PACK_FLAGS dwFlags, void* pAuthBuffer, DWORD cbAuthBuffer, LPSTR pszUserName, DWORD* pcchlMaxUserName, LPSTR pszDomainName, DWORD* pcchMaxDomainName, LPSTR pszPassword, DWORD* pcchMaxPassword)
#uselib "credui.dll"
#cfunc global CredUnPackAuthenticationBufferA "CredUnPackAuthenticationBufferA" int, intptr, int, intptr, intptr, intptr, intptr, intptr, intptr
; res = CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, varptr(pszUserName), varptr(pcchlMaxUserName), varptr(pszDomainName), varptr(pcchMaxDomainName), varptr(pszPassword), varptr(pcchMaxPassword))
; dwFlags : CRED_PACK_FLAGS -> "int"
; pAuthBuffer : void* -> "intptr"
; cbAuthBuffer : DWORD -> "int"
; pszUserName : LPSTR optional, out -> "intptr"
; pcchlMaxUserName : DWORD* in/out -> "intptr"
; pszDomainName : LPSTR optional, out -> "intptr"
; pcchMaxDomainName : DWORD* optional, in/out -> "intptr"
; pszPassword : LPSTR optional, out -> "intptr"
; pcchMaxPassword : DWORD* in/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 (
	credui = windows.NewLazySystemDLL("credui.dll")
	procCredUnPackAuthenticationBufferA = credui.NewProc("CredUnPackAuthenticationBufferA")
)

// dwFlags (CRED_PACK_FLAGS), pAuthBuffer (void*), cbAuthBuffer (DWORD), pszUserName (LPSTR optional, out), pcchlMaxUserName (DWORD* in/out), pszDomainName (LPSTR optional, out), pcchMaxDomainName (DWORD* optional, in/out), pszPassword (LPSTR optional, out), pcchMaxPassword (DWORD* in/out)
r1, _, err := procCredUnPackAuthenticationBufferA.Call(
	uintptr(dwFlags),
	uintptr(pAuthBuffer),
	uintptr(cbAuthBuffer),
	uintptr(pszUserName),
	uintptr(pcchlMaxUserName),
	uintptr(pszDomainName),
	uintptr(pcchMaxDomainName),
	uintptr(pszPassword),
	uintptr(pcchMaxPassword),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CredUnPackAuthenticationBufferA(
  dwFlags: DWORD;   // CRED_PACK_FLAGS
  pAuthBuffer: Pointer;   // void*
  cbAuthBuffer: DWORD;   // DWORD
  pszUserName: PAnsiChar;   // LPSTR optional, out
  pcchlMaxUserName: Pointer;   // DWORD* in/out
  pszDomainName: PAnsiChar;   // LPSTR optional, out
  pcchMaxDomainName: Pointer;   // DWORD* optional, in/out
  pszPassword: PAnsiChar;   // LPSTR optional, out
  pcchMaxPassword: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'credui.dll' name 'CredUnPackAuthenticationBufferA';

result := DllCall("credui\CredUnPackAuthenticationBufferA"
    , "UInt", dwFlags   ; CRED_PACK_FLAGS
    , "Ptr", pAuthBuffer   ; void*
    , "UInt", cbAuthBuffer   ; DWORD
    , "Ptr", pszUserName   ; LPSTR optional, out
    , "Ptr", pcchlMaxUserName   ; DWORD* in/out
    , "Ptr", pszDomainName   ; LPSTR optional, out
    , "Ptr", pcchMaxDomainName   ; DWORD* optional, in/out
    , "Ptr", pszPassword   ; LPSTR optional, out
    , "Ptr", pcchMaxPassword   ; DWORD* in/out
    , "Int")   ; return: BOOL

●CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, pszUserName, pcchlMaxUserName, pszDomainName, pcchMaxDomainName, pszPassword, pcchMaxPassword) = DLL("credui.dll", "bool CredUnPackAuthenticationBufferA(dword, void*, dword, char*, void*, char*, void*, char*, void*)")
# 呼び出し: CredUnPackAuthenticationBufferA(dwFlags, pAuthBuffer, cbAuthBuffer, pszUserName, pcchlMaxUserName, pszDomainName, pcchMaxDomainName, pszPassword, pcchMaxPassword)
# dwFlags : CRED_PACK_FLAGS -> "dword"
# pAuthBuffer : void* -> "void*"
# cbAuthBuffer : DWORD -> "dword"
# pszUserName : LPSTR optional, out -> "char*"
# pcchlMaxUserName : DWORD* in/out -> "void*"
# pszDomainName : LPSTR optional, out -> "char*"
# pcchMaxDomainName : DWORD* optional, in/out -> "void*"
# pszPassword : LPSTR optional, out -> "char*"
# pcchMaxPassword : DWORD* in/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)。