LsaEnumerateLogonSessions

// SECUR32.dll
#include <windows.h>

NTSTATUS LsaEnumerateLogonSessions(
    DWORD* LogonSessionCount,
    LUID** LogonSessionList
);

<DllImport("SECUR32.dll", ExactSpelling:=True)>
Public Shared Function LsaEnumerateLogonSessions(
    <Out> ByRef LogonSessionCount As UInteger,   ' DWORD* out
    LogonSessionList As IntPtr   ' LUID** out
) As Integer
End Function

' LogonSessionCount : DWORD* out
' LogonSessionList : LUID** out
Declare PtrSafe Function LsaEnumerateLogonSessions Lib "secur32" ( _
    ByRef LogonSessionCount As Long, _
    ByVal LogonSessionList 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

LsaEnumerateLogonSessions = ctypes.windll.secur32.LsaEnumerateLogonSessions
LsaEnumerateLogonSessions.restype = ctypes.c_int
LsaEnumerateLogonSessions.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # LogonSessionCount : DWORD* out
    ctypes.c_void_p,  # LogonSessionList : LUID** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SECUR32.dll')
LsaEnumerateLogonSessions = Fiddle::Function.new(
  lib['LsaEnumerateLogonSessions'],
  [
    Fiddle::TYPE_VOIDP,  # LogonSessionCount : DWORD* out
    Fiddle::TYPE_VOIDP,  # LogonSessionList : LUID** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "secur32")]
extern "system" {
    fn LsaEnumerateLogonSessions(
        LogonSessionCount: *mut u32,  // DWORD* out
        LogonSessionList: *mut *mut LUID  // LUID** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SECUR32.dll")]
public static extern int LsaEnumerateLogonSessions(out uint LogonSessionCount, IntPtr LogonSessionList);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SECUR32_LsaEnumerateLogonSessions' -Namespace Win32 -PassThru
# $api::LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList)

#uselib "SECUR32.dll"
#func global LsaEnumerateLogonSessions "LsaEnumerateLogonSessions" sptr, sptr
; LsaEnumerateLogonSessions varptr(LogonSessionCount), varptr(LogonSessionList)   ; 戻り値は stat
; LogonSessionCount : DWORD* out -> "sptr"
; LogonSessionList : LUID** 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。

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

var (
	secur32 = windows.NewLazySystemDLL("SECUR32.dll")
	procLsaEnumerateLogonSessions = secur32.NewProc("LsaEnumerateLogonSessions")
)

// LogonSessionCount (DWORD* out), LogonSessionList (LUID** out)
r1, _, err := procLsaEnumerateLogonSessions.Call(
	uintptr(LogonSessionCount),
	uintptr(LogonSessionList),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // NTSTATUS

function LsaEnumerateLogonSessions(
  LogonSessionCount: Pointer;   // DWORD* out
  LogonSessionList: Pointer   // LUID** out
): Integer; stdcall;
  external 'SECUR32.dll' name 'LsaEnumerateLogonSessions';

result := DllCall("SECUR32\LsaEnumerateLogonSessions"
    , "Ptr", LogonSessionCount   ; DWORD* out
    , "Ptr", LogonSessionList   ; LUID** out
    , "Int")   ; return: NTSTATUS

●LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList) = DLL("SECUR32.dll", "int LsaEnumerateLogonSessions(void*, void*)")
# 呼び出し: LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList)
# LogonSessionCount : DWORD* out -> "void*"
# LogonSessionList : LUID** 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 "secur32" fn LsaEnumerateLogonSessions(
    LogonSessionCount: [*c]u32, // DWORD* out
    LogonSessionList: [*c][*c]LUID // LUID** out
) callconv(std.os.windows.WINAPI) i32;

proc LsaEnumerateLogonSessions(
    LogonSessionCount: ptr uint32,  # DWORD* out
    LogonSessionList: ptr LUID  # LUID** out
): int32 {.importc: "LsaEnumerateLogonSessions", stdcall, dynlib: "SECUR32.dll".}

pragma(lib, "secur32");
extern(Windows)
int LsaEnumerateLogonSessions(
    uint* LogonSessionCount,   // DWORD* out
    LUID** LogonSessionList   // LUID** out
);

ccall((:LsaEnumerateLogonSessions, "SECUR32.dll"), stdcall, Int32,
      (Ptr{UInt32}, Ptr{LUID}),
      LogonSessionCount, LogonSessionList)
# LogonSessionCount : DWORD* out -> Ptr{UInt32}
# LogonSessionList : LUID** out -> Ptr{LUID}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t LsaEnumerateLogonSessions(
    uint32_t* LogonSessionCount,
    void* LogonSessionList);
]]
local secur32 = ffi.load("secur32")
-- secur32.LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList)
-- LogonSessionCount : DWORD* out
-- LogonSessionList : LUID** 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('SECUR32.dll');
const LsaEnumerateLogonSessions = lib.func('__stdcall', 'LsaEnumerateLogonSessions', 'int32_t', ['uint32_t *', 'void *']);
// LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList)
// LogonSessionCount : DWORD* out -> 'uint32_t *'
// LogonSessionList : LUID** 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("SECUR32.dll", {
  LsaEnumerateLogonSessions: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList)
// LogonSessionCount : DWORD* out -> "pointer"
// LogonSessionList : LUID** 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 LsaEnumerateLogonSessions(
    uint32_t* LogonSessionCount,
    void* LogonSessionList);
C, "SECUR32.dll");
// $ffi->LsaEnumerateLogonSessions(LogonSessionCount, LogonSessionList);
// LogonSessionCount : DWORD* out
// LogonSessionList : LUID** 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 Secur32 extends StdCallLibrary {
    Secur32 INSTANCE = Native.load("secur32", Secur32.class);
    int LsaEnumerateLogonSessions(
        IntByReference LogonSessionCount,   // DWORD* out
        Pointer LogonSessionList   // LUID** out
    );
}

@[Link("secur32")]
lib LibSECUR32
  fun LsaEnumerateLogonSessions = LsaEnumerateLogonSessions(
    LogonSessionCount : UInt32*,   # DWORD* out
    LogonSessionList : LUID**   # LUID** 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 LsaEnumerateLogonSessionsNative = Int32 Function(Pointer<Uint32>, Pointer<Void>);
typedef LsaEnumerateLogonSessionsDart = int Function(Pointer<Uint32>, Pointer<Void>);
final LsaEnumerateLogonSessions = DynamicLibrary.open('SECUR32.dll')
    .lookupFunction<LsaEnumerateLogonSessionsNative, LsaEnumerateLogonSessionsDart>('LsaEnumerateLogonSessions');
// LogonSessionCount : DWORD* out -> Pointer<Uint32>
// LogonSessionList : LUID** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function LsaEnumerateLogonSessions(
  LogonSessionCount: Pointer;   // DWORD* out
  LogonSessionList: Pointer   // LUID** out
): Integer; stdcall;
  external 'SECUR32.dll' name 'LsaEnumerateLogonSessions';

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

foreign import stdcall safe "LsaEnumerateLogonSessions"
  c_LsaEnumerateLogonSessions :: Ptr Word32 -> Ptr () -> IO Int32
-- LogonSessionCount : DWORD* out -> Ptr Word32
-- LogonSessionList : LUID** 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 lsaenumeratelogonsessions =
  foreign "LsaEnumerateLogonSessions"
    ((ptr uint32_t) @-> (ptr void) @-> returning int32_t)
(* LogonSessionCount : DWORD* out -> (ptr uint32_t) *)
(* LogonSessionList : LUID** 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 secur32 (t "SECUR32.dll"))
(cffi:use-foreign-library secur32)

(cffi:defcfun ("LsaEnumerateLogonSessions" lsa-enumerate-logon-sessions :convention :stdcall) :int32
  (logon-session-count :pointer)   ; DWORD* out
  (logon-session-list :pointer))   ; LUID** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $LsaEnumerateLogonSessions = Win32::API::More->new('SECUR32',
    'int LsaEnumerateLogonSessions(LPVOID LogonSessionCount, LPVOID LogonSessionList)');
# my $ret = $LsaEnumerateLogonSessions->Call($LogonSessionCount, $LogonSessionList);
# LogonSessionCount : DWORD* out -> LPVOID
# LogonSessionList : LUID** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。