ホーム › Security.Cryptography › CertGetNameStringA

CertGetNameStringA

関数

証明書からサブジェクトや発行者の表示名をANSIで取得する。

DLLCRYPT32.dll文字セットANSI (-A)呼出規約winapi対応OSWindows XP 以降

シグネチャ

// CRYPT32.dll  (ANSI / -A)
#include <windows.h>

DWORD CertGetNameStringA(
    const CERT_CONTEXT* pCertContext,
    DWORD dwType,
    DWORD dwFlags,
    void* pvTypePara,   // optional
    LPSTR pszNameString,   // optional
    DWORD cchNameString
);

パラメーター

名前	型	方向
pCertContext	CERT_CONTEXT*	in
dwType	DWORD	in
dwFlags	DWORD	in
pvTypePara	void*	inoptional
pszNameString	LPSTR	outoptional
cchNameString	DWORD	in

戻り値の型: DWORD

各言語での呼び出し定義

// CRYPT32.dll  (ANSI / -A)
#include <windows.h>

DWORD CertGetNameStringA(
    const CERT_CONTEXT* pCertContext,
    DWORD dwType,
    DWORD dwFlags,
    void* pvTypePara,   // optional
    LPSTR pszNameString,   // optional
    DWORD cchNameString
);

[DllImport("CRYPT32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern uint CertGetNameStringA(
    IntPtr pCertContext,   // CERT_CONTEXT*
    uint dwType,   // DWORD
    uint dwFlags,   // DWORD
    IntPtr pvTypePara,   // void* optional
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszNameString,   // LPSTR optional, out
    uint cchNameString   // DWORD
);

<DllImport("CRYPT32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function CertGetNameStringA(
    pCertContext As IntPtr,   ' CERT_CONTEXT*
    dwType As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    pvTypePara As IntPtr,   ' void* optional
    <MarshalAs(UnmanagedType.LPStr)> pszNameString As System.Text.StringBuilder,   ' LPSTR optional, out
    cchNameString As UInteger   ' DWORD
) As UInteger
End Function

' pCertContext : CERT_CONTEXT*
' dwType : DWORD
' dwFlags : DWORD
' pvTypePara : void* optional
' pszNameString : LPSTR optional, out
' cchNameString : DWORD
Declare PtrSafe Function CertGetNameStringA Lib "crypt32" ( _
    ByVal pCertContext As LongPtr, _
    ByVal dwType As Long, _
    ByVal dwFlags As Long, _
    ByVal pvTypePara As LongPtr, _
    ByVal pszNameString As String, _
    ByVal cchNameString 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

CertGetNameStringA = ctypes.windll.crypt32.CertGetNameStringA
CertGetNameStringA.restype = wintypes.DWORD
CertGetNameStringA.argtypes = [
    ctypes.c_void_p,  # pCertContext : CERT_CONTEXT*
    wintypes.DWORD,  # dwType : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.POINTER(None),  # pvTypePara : void* optional
    wintypes.LPSTR,  # pszNameString : LPSTR optional, out
    wintypes.DWORD,  # cchNameString : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CertGetNameStringA = Fiddle::Function.new(
  lib['CertGetNameStringA'],
  [
    Fiddle::TYPE_VOIDP,  # pCertContext : CERT_CONTEXT*
    -Fiddle::TYPE_INT,  # dwType : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pvTypePara : void* optional
    Fiddle::TYPE_VOIDP,  # pszNameString : LPSTR optional, out
    -Fiddle::TYPE_INT,  # cchNameString : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CertGetNameStringA(
        pCertContext: *const CERT_CONTEXT,  // CERT_CONTEXT*
        dwType: u32,  // DWORD
        dwFlags: u32,  // DWORD
        pvTypePara: *mut (),  // void* optional
        pszNameString: *mut u8,  // LPSTR optional, out
        cchNameString: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CRYPT32.dll", CharSet = CharSet.Ansi)]
public static extern uint CertGetNameStringA(IntPtr pCertContext, uint dwType, uint dwFlags, IntPtr pvTypePara, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszNameString, uint cchNameString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CertGetNameStringA' -Namespace Win32 -PassThru
# $api::CertGetNameStringA(pCertContext, dwType, dwFlags, pvTypePara, pszNameString, cchNameString)

#uselib "CRYPT32.dll"
#func global CertGetNameStringA "CertGetNameStringA" sptr, sptr, sptr, sptr, sptr, sptr
; CertGetNameStringA varptr(pCertContext), dwType, dwFlags, pvTypePara, varptr(pszNameString), cchNameString   ; 戻り値は stat
; pCertContext : CERT_CONTEXT* -> "sptr"
; dwType : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; pvTypePara : void* optional -> "sptr"
; pszNameString : LPSTR optional, out -> "sptr"
; cchNameString : DWORD -> "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 "CRYPT32.dll"
#cfunc global CertGetNameStringA "CertGetNameStringA" var, int, int, sptr, var, int
; res = CertGetNameStringA(pCertContext, dwType, dwFlags, pvTypePara, pszNameString, cchNameString)
; pCertContext : CERT_CONTEXT* -> "var"
; dwType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvTypePara : void* optional -> "sptr"
; pszNameString : LPSTR optional, out -> "var"
; cchNameString : DWORD -> "int"
; ※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 "CRYPT32.dll"
#cfunc global CertGetNameStringA "CertGetNameStringA" sptr, int, int, sptr, sptr, int
; res = CertGetNameStringA(varptr(pCertContext), dwType, dwFlags, pvTypePara, varptr(pszNameString), cchNameString)
; pCertContext : CERT_CONTEXT* -> "sptr"
; dwType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvTypePara : void* optional -> "sptr"
; pszNameString : LPSTR optional, out -> "sptr"
; cchNameString : DWORD -> "int"
; ※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:

; DWORD CertGetNameStringA(CERT_CONTEXT* pCertContext, DWORD dwType, DWORD dwFlags, void* pvTypePara, LPSTR pszNameString, DWORD cchNameString)
#uselib "CRYPT32.dll"
#cfunc global CertGetNameStringA "CertGetNameStringA" var, int, int, intptr, var, int
; res = CertGetNameStringA(pCertContext, dwType, dwFlags, pvTypePara, pszNameString, cchNameString)
; pCertContext : CERT_CONTEXT* -> "var"
; dwType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvTypePara : void* optional -> "intptr"
; pszNameString : LPSTR optional, out -> "var"
; cchNameString : DWORD -> "int"
; ※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。; DWORD CertGetNameStringA(CERT_CONTEXT* pCertContext, DWORD dwType, DWORD dwFlags, void* pvTypePara, LPSTR pszNameString, DWORD cchNameString)
#uselib "CRYPT32.dll"
#cfunc global CertGetNameStringA "CertGetNameStringA" intptr, int, int, intptr, intptr, int
; res = CertGetNameStringA(varptr(pCertContext), dwType, dwFlags, pvTypePara, varptr(pszNameString), cchNameString)
; pCertContext : CERT_CONTEXT* -> "intptr"
; dwType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvTypePara : void* optional -> "intptr"
; pszNameString : LPSTR optional, out -> "intptr"
; cchNameString : DWORD -> "int"
; ※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 (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCertGetNameStringA = crypt32.NewProc("CertGetNameStringA")
)

// pCertContext (CERT_CONTEXT*), dwType (DWORD), dwFlags (DWORD), pvTypePara (void* optional), pszNameString (LPSTR optional, out), cchNameString (DWORD)
r1, _, err := procCertGetNameStringA.Call(
	uintptr(pCertContext),
	uintptr(dwType),
	uintptr(dwFlags),
	uintptr(pvTypePara),
	uintptr(pszNameString),
	uintptr(cchNameString),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function CertGetNameStringA(
  pCertContext: Pointer;   // CERT_CONTEXT*
  dwType: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  pvTypePara: Pointer;   // void* optional
  pszNameString: PAnsiChar;   // LPSTR optional, out
  cchNameString: DWORD   // DWORD
): DWORD; stdcall;
  external 'CRYPT32.dll' name 'CertGetNameStringA';

result := DllCall("CRYPT32\CertGetNameStringA"
    , "Ptr", pCertContext   ; CERT_CONTEXT*
    , "UInt", dwType   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pvTypePara   ; void* optional
    , "Ptr", pszNameString   ; LPSTR optional, out
    , "UInt", cchNameString   ; DWORD
    , "UInt")   ; return: DWORD

●CertGetNameStringA(pCertContext, dwType, dwFlags, pvTypePara, pszNameString, cchNameString) = DLL("CRYPT32.dll", "dword CertGetNameStringA(void*, dword, dword, void*, char*, dword)")
# 呼び出し: CertGetNameStringA(pCertContext, dwType, dwFlags, pvTypePara, pszNameString, cchNameString)
# pCertContext : CERT_CONTEXT* -> "void*"
# dwType : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# pvTypePara : void* optional -> "void*"
# pszNameString : LPSTR optional, out -> "char*"
# cchNameString : DWORD -> "dword"
# 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)。