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#include "pch.h"
#include "hookutils.h"
#include "tier0.h"
#include <iostream>
TempReadWrite::TempReadWrite(void* ptr)
{
m_ptr = ptr;
MEMORY_BASIC_INFORMATION mbi;
VirtualQuery(m_ptr, &mbi, sizeof(mbi));
VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
m_origProtection = mbi.Protect;
}
TempReadWrite::~TempReadWrite()
{
MEMORY_BASIC_INFORMATION mbi;
VirtualQuery(m_ptr, &mbi, sizeof(mbi));
VirtualProtect(mbi.BaseAddress, mbi.RegionSize, m_origProtection, &mbi.Protect);
}
void HookEnabler::CreateHook(LPVOID ppTarget, LPVOID ppDetour, LPVOID* ppOriginal, const char* targetName)
{
// the macro for this uses ppTarget's name as targetName, and this typically starts with &
// targetname is used for debug stuff and debug output is nicer if we don't have this
if (*targetName == '&')
targetName++;
if (MH_CreateHook(ppTarget, ppDetour, ppOriginal) == MH_OK)
{
HookTarget *target = new HookTarget;
target->targetAddress = ppTarget;
target->targetName = (char*)targetName;
m_hookTargets.push_back(target);
}
else
{
if (targetName != nullptr)
Error("MH_CreateHook failed for function %s", targetName);
else
Error("MH_CreateHook failed for unknown function");
}
}
HookEnabler::~HookEnabler()
{
for (auto& hook : m_hookTargets)
{
if (MH_EnableHook(hook->targetAddress) != MH_OK)
{
if (hook->targetName != nullptr)
Error("MH_EnableHook failed for function %s", hook->targetName);
else
Error("MH_EnableHook failed for unknown function");
}
else
std::cout << "enabling hook " << hook->targetName << std::endl;
}
}
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