headers.h

#include <Windows.h>
#include <Psapi.h>
#include <ntstatus.h>
#include <cstdint>
#include <functional>
#include <Shlwapi.h>
#include <winternl.h>

#pragma comment(lib, "ntdll.lib")
#pragma comment(lib, "Shlwapi.lib")

typedef struct _OBJECT_NAME_INFORMATION
{
    UNICODE_STRING Name;
} OBJECT_NAME_INFORMATION, *POBJECT_NAME_INFORMATION;

typedef struct _OBJECT_TYPE_INFORMATION
{
    UNICODE_STRING TypeName;
    ULONG TotalNumberOfObjects;
    ULONG TotalNumberOfHandles;
    ULONG TotalPagedPoolUsage;
    ULONG TotalNonPagedPoolUsage;
    ULONG TotalNamePoolUsage;
    ULONG TotalHandleTableUsage;
    ULONG HighWaterNumberOfObjects;
    ULONG HighWaterNumberOfHandles;
    ULONG HighWaterPagedPoolUsage;
    ULONG HighWaterNonPagedPoolUsage;
    ULONG HighWaterNamePoolUsage;
    ULONG HighWaterHandleTableUsage;
    ULONG InvalidAttributes;
    GENERIC_MAPPING GenericMapping;
    ULONG ValidAccessMask;
    BOOLEAN SecurityRequired;
    BOOLEAN MaintainHandleCount;
    ULONG PoolType;
    ULONG DefaultPagedPoolCharge;
    ULONG DefaultNonPagedPoolCharge;
} OBJECT_TYPE_INFORMATION, *POBJECT_TYPE_INFORMATION;

typedef struct _SYSTEM_HANDLE_TABLE_ENTRY_INFO
{
    USHORT UniqueProcessId;
    USHORT CreatorBackTraceIndex;
    UCHAR ObjectTypeIndex;
    UCHAR HandleAttributes;
    USHORT HandleValue;
    PVOID Object;
    ULONG GrantedAccess;
} SYSTEM_HANDLE_TABLE_ENTRY_INFO, *PSYSTEM_HANDLE_TABLE_ENTRY_INFO;

typedef struct _SYSTEM_HANDLE_INFORMATION
{
    ULONG NumberOfHandles;
    SYSTEM_HANDLE_TABLE_ENTRY_INFO Handles[1];
} SYSTEM_HANDLE_INFORMATION, *PSYSTEM_HANDLE_INFORMATION;

NTSTATUS NTAPI NtQueryObject(
    _In_opt_   HANDLE Handle,
    _In_       OBJECT_INFORMATION_CLASS ObjectInformationClass,
    _Out_opt_  PVOID ObjectInformation,
    _In_       ULONG ObjectInformationLength,
    _Out_opt_  PULONG ReturnLength
);

NTSTATUS WINAPI NtQuerySystemInformation(
    _In_       SYSTEM_INFORMATION_CLASS SystemInformationClass,
    _Inout_    PVOID SystemInformation,
    _In_       ULONG SystemInformationLength,
    _Out_opt_  PULONG ReturnLength
);

typedef std::function<NTSTATUS(PSYSTEM_HANDLE_TABLE_ENTRY_INFO)> ENUM_HANDLE_CALLBACK;