#include "pch.h"

#include "NtdllBase.h"

Ntdll::Ntdll()
{
    m_module = GetModuleHandleW(L"ntdll.dll");
    if (m_module == 0)
    {
        throw std::runtime_error{ "GetModuleHandleW returned null" };
    }

    m_NtQuerySystemInformation = reinterpret_cast<NtQuerySystemInformation_t>(GetProcAddress(m_module, "NtQuerySystemInformation"));
    if (m_NtQuerySystemInformation == 0)
    {
        throw std::runtime_error{ "GetProcAddress returned null for NtQuerySystemInformation" };
    }

    m_NtDuplicateObject = reinterpret_cast<NtDuplicateObject_t>(GetProcAddress(m_module, "NtDuplicateObject"));
    if (m_NtDuplicateObject == 0)
    {
        throw std::runtime_error{ "GetProcAddress returned null for NtDuplicateObject" };
    }

    m_NtQueryObject = reinterpret_cast<NtQueryObject_t>(GetProcAddress(m_module, "NtQueryObject"));
    if (m_NtQueryObject == 0)
    {
        throw std::runtime_error{ "GetProcAddress returned null for NtQueryObject" };
    }
}

NTSTATUS Ntdll::NtQuerySystemInformation(
    ULONG SystemInformationClass,
    PVOID SystemInformation,
    ULONG SystemInformationLength,
    PULONG ReturnLength)
{
    return m_NtQuerySystemInformation(SystemInformationClass, SystemInformation, SystemInformationLength, ReturnLength);
}

NTSTATUS Ntdll::NtDuplicateObject(
    HANDLE SourceProcessHandle,
    HANDLE SourceHandle,
    HANDLE TargetProcessHandle,
    PHANDLE TargetHandle,
    ACCESS_MASK DesiredAccess,
    ULONG Attributes,
    ULONG Options)
{
    return m_NtDuplicateObject(SourceProcessHandle, SourceHandle, TargetProcessHandle, TargetHandle, DesiredAccess, Attributes, Options);
}

NTSTATUS Ntdll::NtQueryObject(
    HANDLE ObjectHandle,
    ULONG ObjectInformationClass,
    PVOID ObjectInformation,
    ULONG ObjectInformationLength,
    PULONG ReturnLength)
{
    return m_NtQueryObject(ObjectHandle, ObjectInformationClass, ObjectInformation, ObjectInformationLength, ReturnLength);
}