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GetCachedSigningLevel

関数

指定ファイルのキャッシュ署名レベルと拇印を取得する。

DLLKERNEL32.dll呼出規約winapi

シグネチャ

// KERNEL32.dll
#include <windows.h>

BOOL GetCachedSigningLevel(
    HANDLE File,
    DWORD* Flags,
    DWORD* SigningLevel,
    BYTE* Thumbprint,   // optional
    DWORD* ThumbprintSize,   // optional
    DWORD* ThumbprintAlgorithm   // optional
);

パラメーター

名前型方向説明

File HANDLE in ファイルのハンドル。

Flags

DWORD*

out

ファイルに設定されたフラグへのポインター。次の Flags がサポートされています。

フラグ	値
SIGNING_LEVEL_FILE_CACHE_FLAG_NOT_VALIDATED	`0x01`
SIGNING_LEVEL_FILE_CACHE_FLAG_VALIDATE_ONLY	`0x04`

これらのフラグを組み合わせて使用する (SIGNING_LEVEL_FILE_CACHE_FLAG_NOT_VALIDATED | SIGNING_LEVEL_FILE_CACHE_FLAG_VALIDATE_ONLY) ことは、ファイルが検証されたことを示します。

SigningLevel DWORD* out 署名レベルへのポインター。

Thumbprint BYTE* outoptional 拇印 (thumbprint) へのポインター。

ThumbprintSize DWORD* inoutoptional 拇印サイズへのポインター。

ThumbprintAlgorithm DWORD* outoptional 拇印アルゴリズムへのポインター。

戻り値の型: BOOL

公式ドキュメント

キャッシュされた署名レベルを取得します。

戻り値

関数が成功した場合は TRUE を返します。

関数が失敗した場合は FALSE を返します。拡張エラー情報を取得するには、GetLastError を呼び出します。GetLastError は WinError.h で定義されているエラーコードのいずれかを返す場合があります。

出典・ライセンス: 上記「公式ドキュメント」の内容は Microsoft の Win32 API ドキュメント(MicrosoftDocs/sdk-api)を日本語に翻訳・改変したものです。© Microsoft Corporation. CC BY 4.0 で提供。
Microsoft 公式リファレンス: 英語 (en-us) · 日本語 (ja-jp) · 原文ソース (GitHub)

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

BOOL GetCachedSigningLevel(
    HANDLE File,
    DWORD* Flags,
    DWORD* SigningLevel,
    BYTE* Thumbprint,   // optional
    DWORD* ThumbprintSize,   // optional
    DWORD* ThumbprintAlgorithm   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern bool GetCachedSigningLevel(
    IntPtr File,   // HANDLE
    out uint Flags,   // DWORD* out
    out uint SigningLevel,   // DWORD* out
    IntPtr Thumbprint,   // BYTE* optional, out
    IntPtr ThumbprintSize,   // DWORD* optional, in/out
    IntPtr ThumbprintAlgorithm   // DWORD* optional, out
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetCachedSigningLevel(
    File As IntPtr,   ' HANDLE
    <Out> ByRef Flags As UInteger,   ' DWORD* out
    <Out> ByRef SigningLevel As UInteger,   ' DWORD* out
    Thumbprint As IntPtr,   ' BYTE* optional, out
    ThumbprintSize As IntPtr,   ' DWORD* optional, in/out
    ThumbprintAlgorithm As IntPtr   ' DWORD* optional, out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' File : HANDLE
' Flags : DWORD* out
' SigningLevel : DWORD* out
' Thumbprint : BYTE* optional, out
' ThumbprintSize : DWORD* optional, in/out
' ThumbprintAlgorithm : DWORD* optional, out
Declare PtrSafe Function GetCachedSigningLevel Lib "kernel32" ( _
    ByVal File As LongPtr, _
    ByRef Flags As Long, _
    ByRef SigningLevel As Long, _
    ByVal Thumbprint As LongPtr, _
    ByVal ThumbprintSize As LongPtr, _
    ByVal ThumbprintAlgorithm 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

GetCachedSigningLevel = ctypes.windll.kernel32.GetCachedSigningLevel
GetCachedSigningLevel.restype = wintypes.BOOL
GetCachedSigningLevel.argtypes = [
    wintypes.HANDLE,  # File : HANDLE
    ctypes.POINTER(wintypes.DWORD),  # Flags : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # SigningLevel : DWORD* out
    ctypes.POINTER(ctypes.c_ubyte),  # Thumbprint : BYTE* optional, out
    ctypes.POINTER(wintypes.DWORD),  # ThumbprintSize : DWORD* optional, in/out
    ctypes.POINTER(wintypes.DWORD),  # ThumbprintAlgorithm : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetCachedSigningLevel = Fiddle::Function.new(
  lib['GetCachedSigningLevel'],
  [
    Fiddle::TYPE_VOIDP,  # File : HANDLE
    Fiddle::TYPE_VOIDP,  # Flags : DWORD* out
    Fiddle::TYPE_VOIDP,  # SigningLevel : DWORD* out
    Fiddle::TYPE_VOIDP,  # Thumbprint : BYTE* optional, out
    Fiddle::TYPE_VOIDP,  # ThumbprintSize : DWORD* optional, in/out
    Fiddle::TYPE_VOIDP,  # ThumbprintAlgorithm : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetCachedSigningLevel(
        File: *mut core::ffi::c_void,  // HANDLE
        Flags: *mut u32,  // DWORD* out
        SigningLevel: *mut u32,  // DWORD* out
        Thumbprint: *mut u8,  // BYTE* optional, out
        ThumbprintSize: *mut u32,  // DWORD* optional, in/out
        ThumbprintAlgorithm: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool GetCachedSigningLevel(IntPtr File, out uint Flags, out uint SigningLevel, IntPtr Thumbprint, IntPtr ThumbprintSize, IntPtr ThumbprintAlgorithm);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetCachedSigningLevel' -Namespace Win32 -PassThru
# $api::GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)

#uselib "KERNEL32.dll"
#func global GetCachedSigningLevel "GetCachedSigningLevel" sptr, sptr, sptr, sptr, sptr, sptr
; GetCachedSigningLevel File, varptr(Flags), varptr(SigningLevel), varptr(Thumbprint), varptr(ThumbprintSize), varptr(ThumbprintAlgorithm)   ; 戻り値は stat
; File : HANDLE -> "sptr"
; Flags : DWORD* out -> "sptr"
; SigningLevel : DWORD* out -> "sptr"
; Thumbprint : BYTE* optional, out -> "sptr"
; ThumbprintSize : DWORD* optional, in/out -> "sptr"
; ThumbprintAlgorithm : DWORD* 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 "KERNEL32.dll"
#cfunc global GetCachedSigningLevel "GetCachedSigningLevel" sptr, var, var, var, var, var
; res = GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
; File : HANDLE -> "sptr"
; Flags : DWORD* out -> "var"
; SigningLevel : DWORD* out -> "var"
; Thumbprint : BYTE* optional, out -> "var"
; ThumbprintSize : DWORD* optional, in/out -> "var"
; ThumbprintAlgorithm : DWORD* optional, 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 "KERNEL32.dll"
#cfunc global GetCachedSigningLevel "GetCachedSigningLevel" sptr, sptr, sptr, sptr, sptr, sptr
; res = GetCachedSigningLevel(File, varptr(Flags), varptr(SigningLevel), varptr(Thumbprint), varptr(ThumbprintSize), varptr(ThumbprintAlgorithm))
; File : HANDLE -> "sptr"
; Flags : DWORD* out -> "sptr"
; SigningLevel : DWORD* out -> "sptr"
; Thumbprint : BYTE* optional, out -> "sptr"
; ThumbprintSize : DWORD* optional, in/out -> "sptr"
; ThumbprintAlgorithm : DWORD* 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:

; BOOL GetCachedSigningLevel(HANDLE File, DWORD* Flags, DWORD* SigningLevel, BYTE* Thumbprint, DWORD* ThumbprintSize, DWORD* ThumbprintAlgorithm)
#uselib "KERNEL32.dll"
#cfunc global GetCachedSigningLevel "GetCachedSigningLevel" intptr, var, var, var, var, var
; res = GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
; File : HANDLE -> "intptr"
; Flags : DWORD* out -> "var"
; SigningLevel : DWORD* out -> "var"
; Thumbprint : BYTE* optional, out -> "var"
; ThumbprintSize : DWORD* optional, in/out -> "var"
; ThumbprintAlgorithm : DWORD* optional, 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 GetCachedSigningLevel(HANDLE File, DWORD* Flags, DWORD* SigningLevel, BYTE* Thumbprint, DWORD* ThumbprintSize, DWORD* ThumbprintAlgorithm)
#uselib "KERNEL32.dll"
#cfunc global GetCachedSigningLevel "GetCachedSigningLevel" intptr, intptr, intptr, intptr, intptr, intptr
; res = GetCachedSigningLevel(File, varptr(Flags), varptr(SigningLevel), varptr(Thumbprint), varptr(ThumbprintSize), varptr(ThumbprintAlgorithm))
; File : HANDLE -> "intptr"
; Flags : DWORD* out -> "intptr"
; SigningLevel : DWORD* out -> "intptr"
; Thumbprint : BYTE* optional, out -> "intptr"
; ThumbprintSize : DWORD* optional, in/out -> "intptr"
; ThumbprintAlgorithm : DWORD* 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetCachedSigningLevel = kernel32.NewProc("GetCachedSigningLevel")
)

// File (HANDLE), Flags (DWORD* out), SigningLevel (DWORD* out), Thumbprint (BYTE* optional, out), ThumbprintSize (DWORD* optional, in/out), ThumbprintAlgorithm (DWORD* optional, out)
r1, _, err := procGetCachedSigningLevel.Call(
	uintptr(File),
	uintptr(Flags),
	uintptr(SigningLevel),
	uintptr(Thumbprint),
	uintptr(ThumbprintSize),
	uintptr(ThumbprintAlgorithm),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetCachedSigningLevel(
  File: THandle;   // HANDLE
  Flags: Pointer;   // DWORD* out
  SigningLevel: Pointer;   // DWORD* out
  Thumbprint: Pointer;   // BYTE* optional, out
  ThumbprintSize: Pointer;   // DWORD* optional, in/out
  ThumbprintAlgorithm: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetCachedSigningLevel';

result := DllCall("KERNEL32\GetCachedSigningLevel"
    , "Ptr", File   ; HANDLE
    , "Ptr", Flags   ; DWORD* out
    , "Ptr", SigningLevel   ; DWORD* out
    , "Ptr", Thumbprint   ; BYTE* optional, out
    , "Ptr", ThumbprintSize   ; DWORD* optional, in/out
    , "Ptr", ThumbprintAlgorithm   ; DWORD* optional, out
    , "Int")   ; return: BOOL

●GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm) = DLL("KERNEL32.dll", "bool GetCachedSigningLevel(void*, void*, void*, void*, void*, void*)")
# 呼び出し: GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
# File : HANDLE -> "void*"
# Flags : DWORD* out -> "void*"
# SigningLevel : DWORD* out -> "void*"
# Thumbprint : BYTE* optional, out -> "void*"
# ThumbprintSize : DWORD* optional, in/out -> "void*"
# ThumbprintAlgorithm : DWORD* 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 "kernel32" fn GetCachedSigningLevel(
    File: ?*anyopaque, // HANDLE
    Flags: [*c]u32, // DWORD* out
    SigningLevel: [*c]u32, // DWORD* out
    Thumbprint: [*c]u8, // BYTE* optional, out
    ThumbprintSize: [*c]u32, // DWORD* optional, in/out
    ThumbprintAlgorithm: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc GetCachedSigningLevel(
    File: pointer,  # HANDLE
    Flags: ptr uint32,  # DWORD* out
    SigningLevel: ptr uint32,  # DWORD* out
    Thumbprint: ptr uint8,  # BYTE* optional, out
    ThumbprintSize: ptr uint32,  # DWORD* optional, in/out
    ThumbprintAlgorithm: ptr uint32  # DWORD* optional, out
): int32 {.importc: "GetCachedSigningLevel", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int GetCachedSigningLevel(
    void* File,   // HANDLE
    uint* Flags,   // DWORD* out
    uint* SigningLevel,   // DWORD* out
    ubyte* Thumbprint,   // BYTE* optional, out
    uint* ThumbprintSize,   // DWORD* optional, in/out
    uint* ThumbprintAlgorithm   // DWORD* optional, out
);

ccall((:GetCachedSigningLevel, "KERNEL32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{UInt32}, Ptr{UInt32}, Ptr{UInt8}, Ptr{UInt32}, Ptr{UInt32}),
      File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
# File : HANDLE -> Ptr{Cvoid}
# Flags : DWORD* out -> Ptr{UInt32}
# SigningLevel : DWORD* out -> Ptr{UInt32}
# Thumbprint : BYTE* optional, out -> Ptr{UInt8}
# ThumbprintSize : DWORD* optional, in/out -> Ptr{UInt32}
# ThumbprintAlgorithm : DWORD* optional, out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetCachedSigningLevel(
    void* File,
    uint32_t* Flags,
    uint32_t* SigningLevel,
    uint8_t* Thumbprint,
    uint32_t* ThumbprintSize,
    uint32_t* ThumbprintAlgorithm);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
-- File : HANDLE
-- Flags : DWORD* out
-- SigningLevel : DWORD* out
-- Thumbprint : BYTE* optional, out
-- ThumbprintSize : DWORD* optional, in/out
-- ThumbprintAlgorithm : DWORD* 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('KERNEL32.dll');
const GetCachedSigningLevel = lib.func('__stdcall', 'GetCachedSigningLevel', 'int32_t', ['void *', 'uint32_t *', 'uint32_t *', 'uint8_t *', 'uint32_t *', 'uint32_t *']);
// GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
// File : HANDLE -> 'void *'
// Flags : DWORD* out -> 'uint32_t *'
// SigningLevel : DWORD* out -> 'uint32_t *'
// Thumbprint : BYTE* optional, out -> 'uint8_t *'
// ThumbprintSize : DWORD* optional, in/out -> 'uint32_t *'
// ThumbprintAlgorithm : DWORD* optional, out -> 'uint32_t *'
// 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("KERNEL32.dll", {
  GetCachedSigningLevel: { parameters: ["pointer", "pointer", "pointer", "pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm)
// File : HANDLE -> "pointer"
// Flags : DWORD* out -> "pointer"
// SigningLevel : DWORD* out -> "pointer"
// Thumbprint : BYTE* optional, out -> "pointer"
// ThumbprintSize : DWORD* optional, in/out -> "pointer"
// ThumbprintAlgorithm : DWORD* optional, 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
int32_t GetCachedSigningLevel(
    void* File,
    uint32_t* Flags,
    uint32_t* SigningLevel,
    uint8_t* Thumbprint,
    uint32_t* ThumbprintSize,
    uint32_t* ThumbprintAlgorithm);
C, "KERNEL32.dll");
// $ffi->GetCachedSigningLevel(File, Flags, SigningLevel, Thumbprint, ThumbprintSize, ThumbprintAlgorithm);
// File : HANDLE
// Flags : DWORD* out
// SigningLevel : DWORD* out
// Thumbprint : BYTE* optional, out
// ThumbprintSize : DWORD* optional, in/out
// ThumbprintAlgorithm : DWORD* 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class);
    boolean GetCachedSigningLevel(
        Pointer File,   // HANDLE
        IntByReference Flags,   // DWORD* out
        IntByReference SigningLevel,   // DWORD* out
        byte[] Thumbprint,   // BYTE* optional, out
        IntByReference ThumbprintSize,   // DWORD* optional, in/out
        IntByReference ThumbprintAlgorithm   // DWORD* optional, out
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun GetCachedSigningLevel = GetCachedSigningLevel(
    File : Void*,   # HANDLE
    Flags : UInt32*,   # DWORD* out
    SigningLevel : UInt32*,   # DWORD* out
    Thumbprint : UInt8*,   # BYTE* optional, out
    ThumbprintSize : UInt32*,   # DWORD* optional, in/out
    ThumbprintAlgorithm : UInt32*   # DWORD* optional, out
  ) : Int32
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 GetCachedSigningLevelNative = Int32 Function(Pointer<Void>, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint8>, Pointer<Uint32>, Pointer<Uint32>);
typedef GetCachedSigningLevelDart = int Function(Pointer<Void>, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint8>, Pointer<Uint32>, Pointer<Uint32>);
final GetCachedSigningLevel = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<GetCachedSigningLevelNative, GetCachedSigningLevelDart>('GetCachedSigningLevel');
// File : HANDLE -> Pointer<Void>
// Flags : DWORD* out -> Pointer<Uint32>
// SigningLevel : DWORD* out -> Pointer<Uint32>
// Thumbprint : BYTE* optional, out -> Pointer<Uint8>
// ThumbprintSize : DWORD* optional, in/out -> Pointer<Uint32>
// ThumbprintAlgorithm : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetCachedSigningLevel(
  File: THandle;   // HANDLE
  Flags: Pointer;   // DWORD* out
  SigningLevel: Pointer;   // DWORD* out
  Thumbprint: Pointer;   // BYTE* optional, out
  ThumbprintSize: Pointer;   // DWORD* optional, in/out
  ThumbprintAlgorithm: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetCachedSigningLevel';

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

foreign import stdcall safe "GetCachedSigningLevel"
  c_GetCachedSigningLevel :: Ptr () -> Ptr Word32 -> Ptr Word32 -> Ptr Word8 -> Ptr Word32 -> Ptr Word32 -> IO CInt
-- File : HANDLE -> Ptr ()
-- Flags : DWORD* out -> Ptr Word32
-- SigningLevel : DWORD* out -> Ptr Word32
-- Thumbprint : BYTE* optional, out -> Ptr Word8
-- ThumbprintSize : DWORD* optional, in/out -> Ptr Word32
-- ThumbprintAlgorithm : DWORD* optional, out -> Ptr Word32
-- 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 getcachedsigninglevel =
  foreign "GetCachedSigningLevel"
    ((ptr void) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> (ptr uint8_t) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> returning int32_t)
(* File : HANDLE -> (ptr void) *)
(* Flags : DWORD* out -> (ptr uint32_t) *)
(* SigningLevel : DWORD* out -> (ptr uint32_t) *)
(* Thumbprint : BYTE* optional, out -> (ptr uint8_t) *)
(* ThumbprintSize : DWORD* optional, in/out -> (ptr uint32_t) *)
(* ThumbprintAlgorithm : DWORD* optional, out -> (ptr uint32_t) *)
(* 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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("GetCachedSigningLevel" get-cached-signing-level :convention :stdcall) :int32
  (file :pointer)   ; HANDLE
  (flags :pointer)   ; DWORD* out
  (signing-level :pointer)   ; DWORD* out
  (thumbprint :pointer)   ; BYTE* optional, out
  (thumbprint-size :pointer)   ; DWORD* optional, in/out
  (thumbprint-algorithm :pointer))   ; DWORD* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetCachedSigningLevel = Win32::API::More->new('KERNEL32',
    'BOOL GetCachedSigningLevel(HANDLE File, LPVOID Flags, LPVOID SigningLevel, LPVOID Thumbprint, LPVOID ThumbprintSize, LPVOID ThumbprintAlgorithm)');
# my $ret = $GetCachedSigningLevel->Call($File, $Flags, $SigningLevel, $Thumbprint, $ThumbprintSize, $ThumbprintAlgorithm);
# File : HANDLE -> HANDLE
# Flags : DWORD* out -> LPVOID
# SigningLevel : DWORD* out -> LPVOID
# Thumbprint : BYTE* optional, out -> LPVOID
# ThumbprintSize : DWORD* optional, in/out -> LPVOID
# ThumbprintAlgorithm : DWORD* 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。