TmpMenu/src/detour_hook.cpp
maybegreat48 97a8c5d60b Add more spoofing options and added clang-format (#1020)
* feat(Spoofing): add spoofing
* feat(Spoofing): prepare code for player attach
* remove(PlayerAttach): isn't going to work due to netsync architecture
* fix(GUI): fix scaling
* feat(Project): add clang-format file
* feat(Classes): update classes
* fix(BlackHole): remove unnecessary cleanup
* fix(Formatting): fix formatting for initializer lists
* feat(clang-format): Set tab width and 1 space before comment

Co-authored-by: Yimura <24669514+Yimura@users.noreply.github.com>
2023-03-01 21:27:15 +00:00

80 lines
1.9 KiB
C++

#include "detour_hook.hpp"
#include "common.hpp"
#include "memory/handle.hpp"
#include <MinHook.h>
namespace big
{
detour_hook::detour_hook(std::string name, void* detour) :
m_name(std::move(name)),
m_detour(detour)
{
}
detour_hook::detour_hook(std::string name, void* target, void* detour) :
m_name(std::move(name)),
m_target(target),
m_detour(detour)
{
create_hook();
}
void detour_hook::set_target_and_create_hook(void* target)
{
m_target = target;
create_hook();
}
void detour_hook::create_hook()
{
if (!m_target)
return;
fix_hook_address();
if (auto status = MH_CreateHook(m_target, m_detour, &m_original); status != MH_OK)
throw std::runtime_error(std::format("Failed to create hook '{}' at 0x{:X} (error: {})", m_name, uintptr_t(m_target), MH_StatusToString(status)));
}
detour_hook::~detour_hook() noexcept
{
if (!m_target)
return;
if (auto status = MH_RemoveHook(m_target); status != MH_OK)
LOG(FATAL) << "Failed to remove hook '" << m_name << "' at 0x" << HEX_TO_UPPER(uintptr_t(m_target)) << "(error: " << m_name << ")";
}
void detour_hook::enable()
{
if (!m_target)
return;
if (auto status = MH_QueueEnableHook(m_target); status != MH_OK)
throw std::runtime_error(std::format("Failed to enable hook 0x{:X} ({})", uintptr_t(m_target), MH_StatusToString(status)));
}
void detour_hook::disable()
{
if (!m_target)
return;
if (auto status = MH_QueueDisableHook(m_target); status != MH_OK)
LOG(WARNING) << "Failed to disable hook '" << m_name << "'.";
}
DWORD exp_handler(PEXCEPTION_POINTERS exp, std::string const& name)
{
return exp->ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
}
void detour_hook::fix_hook_address()
{
auto ptr = memory::handle(m_target);
while (ptr.as<std::uint8_t&>() == 0xE9)
ptr = ptr.add(1).rip();
m_target = ptr.as<void*>();
}
}