173d01145d
* chore: Changed detour_hook extension back to cpp * chore(crossmap): split crossmap into header and source file * chore(logger): rename macro's to code style * chore(logger): removed unused local variable * chore(benchmark): changed extension to C++ header * chore: cleanup pickup_rewards file * chore(gta): cleanup code and file naming * chore(CanApplyData): Removed unused code
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
#include "common.hpp"
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#include "detour_hook.hpp"
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#include "logger.hpp"
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#include "memory/handle.hpp"
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#include <MinHook.h>
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namespace big
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{
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detour_hook::detour_hook(std::string name, void* detour) :
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m_name(std::move(name)),
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m_detour(detour)
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{
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}
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detour_hook::detour_hook(std::string name, void* target, void* detour) :
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m_name(std::move(name)),
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m_target(target),
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m_detour(detour)
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{
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create_hook();
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}
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void detour_hook::set_target_and_create_hook(void* target)
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{
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m_target = target;
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create_hook();
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}
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void detour_hook::create_hook()
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{
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fix_hook_address();
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if (auto status = MH_CreateHook(m_target, m_detour, &m_original); status != MH_OK)
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throw std::runtime_error(std::format("Failed to create hook '{}' at 0x{:X} (error: {})", m_name, uintptr_t(m_target), MH_StatusToString(status)));
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}
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detour_hook::~detour_hook() noexcept
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{
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if (auto status = MH_RemoveHook(m_target); status != MH_OK)
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LOG(FATAL) << "Failed to remove hook '" << m_name << "' at 0x" << HEX_TO_UPPER(uintptr_t(m_target)) << "(error: " << m_name << ")";
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}
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void detour_hook::enable()
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{
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if (auto status = MH_QueueEnableHook(m_target); status != MH_OK)
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throw std::runtime_error(std::format("Failed to enable hook 0x{:X} ({})", uintptr_t(m_target), MH_StatusToString(status)));
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}
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void detour_hook::disable()
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{
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if (auto status = MH_QueueDisableHook(m_target); status != MH_OK)
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LOG(WARNING) << "Failed to disable hook '" << m_name << "'.";
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}
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DWORD exp_handler(PEXCEPTION_POINTERS exp, std::string const& name)
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{
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return exp->ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION
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? EXCEPTION_EXECUTE_HANDLER
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: EXCEPTION_CONTINUE_SEARCH;
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}
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void detour_hook::fix_hook_address()
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{
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auto ptr = memory::handle(m_target);
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while (ptr.as<std::uint8_t&>() == 0xE9)
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ptr = ptr.add(1).rip();
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m_target = ptr.as<void*>();
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}
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}
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