CertGetEnhancedKeyUsage

// CRYPT32.dll
#include <windows.h>

BOOL CertGetEnhancedKeyUsage(
    const CERT_CONTEXT* pCertContext,
    DWORD dwFlags,
    CTL_USAGE* pUsage,   // optional
    DWORD* pcbUsage
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CertGetEnhancedKeyUsage(
    pCertContext As IntPtr,   ' CERT_CONTEXT*
    dwFlags As UInteger,   ' DWORD
    pUsage As IntPtr,   ' CTL_USAGE* optional, out
    ByRef pcbUsage As UInteger   ' DWORD* in/out
) As Boolean
End Function

' pCertContext : CERT_CONTEXT*
' dwFlags : DWORD
' pUsage : CTL_USAGE* optional, out
' pcbUsage : DWORD* in/out
Declare PtrSafe Function CertGetEnhancedKeyUsage Lib "crypt32" ( _
    ByVal pCertContext As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal pUsage As LongPtr, _
    ByRef pcbUsage 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

CertGetEnhancedKeyUsage = ctypes.windll.crypt32.CertGetEnhancedKeyUsage
CertGetEnhancedKeyUsage.restype = wintypes.BOOL
CertGetEnhancedKeyUsage.argtypes = [
    ctypes.c_void_p,  # pCertContext : CERT_CONTEXT*
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # pUsage : CTL_USAGE* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcbUsage : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CertGetEnhancedKeyUsage = Fiddle::Function.new(
  lib['CertGetEnhancedKeyUsage'],
  [
    Fiddle::TYPE_VOIDP,  # pCertContext : CERT_CONTEXT*
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pUsage : CTL_USAGE* optional, out
    Fiddle::TYPE_VOIDP,  # pcbUsage : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CertGetEnhancedKeyUsage(
        pCertContext: *const CERT_CONTEXT,  // CERT_CONTEXT*
        dwFlags: u32,  // DWORD
        pUsage: *mut CTL_USAGE,  // CTL_USAGE* optional, out
        pcbUsage: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true)]
public static extern bool CertGetEnhancedKeyUsage(IntPtr pCertContext, uint dwFlags, IntPtr pUsage, ref uint pcbUsage);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CertGetEnhancedKeyUsage' -Namespace Win32 -PassThru
# $api::CertGetEnhancedKeyUsage(pCertContext, dwFlags, pUsage, pcbUsage)

#uselib "CRYPT32.dll"
#func global CertGetEnhancedKeyUsage "CertGetEnhancedKeyUsage" sptr, sptr, sptr, sptr
; CertGetEnhancedKeyUsage varptr(pCertContext), dwFlags, varptr(pUsage), varptr(pcbUsage)   ; 戻り値は stat
; pCertContext : CERT_CONTEXT* -> "sptr"
; dwFlags : DWORD -> "sptr"
; pUsage : CTL_USAGE* optional, out -> "sptr"
; pcbUsage : 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。

#uselib "CRYPT32.dll"
#cfunc global CertGetEnhancedKeyUsage "CertGetEnhancedKeyUsage" var, int, var, var
; res = CertGetEnhancedKeyUsage(pCertContext, dwFlags, pUsage, pcbUsage)
; pCertContext : CERT_CONTEXT* -> "var"
; dwFlags : DWORD -> "int"
; pUsage : CTL_USAGE* optional, out -> "var"
; pcbUsage : 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 CertGetEnhancedKeyUsage(CERT_CONTEXT* pCertContext, DWORD dwFlags, CTL_USAGE* pUsage, DWORD* pcbUsage)
#uselib "CRYPT32.dll"
#cfunc global CertGetEnhancedKeyUsage "CertGetEnhancedKeyUsage" var, int, var, var
; res = CertGetEnhancedKeyUsage(pCertContext, dwFlags, pUsage, pcbUsage)
; pCertContext : CERT_CONTEXT* -> "var"
; dwFlags : DWORD -> "int"
; pUsage : CTL_USAGE* optional, out -> "var"
; pcbUsage : 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。

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

var (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCertGetEnhancedKeyUsage = crypt32.NewProc("CertGetEnhancedKeyUsage")
)

// pCertContext (CERT_CONTEXT*), dwFlags (DWORD), pUsage (CTL_USAGE* optional, out), pcbUsage (DWORD* in/out)
r1, _, err := procCertGetEnhancedKeyUsage.Call(
	uintptr(pCertContext),
	uintptr(dwFlags),
	uintptr(pUsage),
	uintptr(pcbUsage),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CertGetEnhancedKeyUsage(
  pCertContext: Pointer;   // CERT_CONTEXT*
  dwFlags: DWORD;   // DWORD
  pUsage: Pointer;   // CTL_USAGE* optional, out
  pcbUsage: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CertGetEnhancedKeyUsage';

result := DllCall("CRYPT32\CertGetEnhancedKeyUsage"
    , "Ptr", pCertContext   ; CERT_CONTEXT*
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pUsage   ; CTL_USAGE* optional, out
    , "Ptr", pcbUsage   ; DWORD* in/out
    , "Int")   ; return: BOOL

●CertGetEnhancedKeyUsage(pCertContext, dwFlags, pUsage, pcbUsage) = DLL("CRYPT32.dll", "bool CertGetEnhancedKeyUsage(void*, dword, void*, void*)")
# 呼び出し: CertGetEnhancedKeyUsage(pCertContext, dwFlags, pUsage, pcbUsage)
# pCertContext : CERT_CONTEXT* -> "void*"
# dwFlags : DWORD -> "dword"
# pUsage : CTL_USAGE* optional, out -> "void*"
# pcbUsage : 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)。