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update ScrapHacks: remove unused VMT_Hook

This commit is contained in:
Daniel S. 2019-11-28 19:59:36 +01:00
parent 03f04ae062
commit 5f55c75a4b
1 changed files with 0 additions and 101 deletions
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101
ScrapHacks/ScrapHack/VMT_Hook.h
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@ -1,101 +0,0 @@
#pragma once
class VMT_Hook
{
private:
MEMORY_BASIC_INFORMATION mbi;
void *orig;
void *detour;
DWORD *vtable;
size_t ord;
bool enabled;
static map<uintptr_t, shared_ptr<VMT_Hook>> hooks;
static DWORD *GetVTable(void *addr)
{
return (DWORD *)*(DWORD *)addr;
};
public:
VMT_Hook(void *obj, size_t ord, void *detour)
{
this->vtable = GetVTable(obj);
this->detour = detour;
this->orig = reinterpret_cast<void *>(vtable[ord]);
this->ord = ord;
this->enabled = false;
VirtualQuery(&this->vtable[this->ord], &mbi, sizeof(mbi));
cout << "Hooking: " << this->vtable << "[" << this->ord << "]: (" << this->orig << " -> " << this->detour << ")" << endl;
}
~VMT_Hook()
{
cout << "Unhooking: " << this->vtable << "[" << this->ord << "]: (" << this->orig << " -> " << this->detour << ")" << endl;
this->disable();
}
static void create(void *obj, size_t ord, void *detour)
{
uintptr_t key = reinterpret_cast<uintptr_t>(detour);
hooks[key] = make_shared<VMT_Hook>(obj, ord, detour);
hooks[key]->enable();
}
static shared_ptr<VMT_Hook> get(void *func)
{
uintptr_t addr = reinterpret_cast<uintptr_t>(func);
return VMT_Hook::get(addr);
}
static shared_ptr<VMT_Hook> get(uintptr_t addr)
{
return hooks.at(addr);
}
static size_t drop(void *func)
{
uintptr_t addr = reinterpret_cast<uintptr_t>(func);
return VMT_Hook::drop(addr);
}
static size_t drop(uintptr_t addr)
{
return hooks.erase(addr);
}
static void clear()
{
return hooks.clear();
}
void disable()
{
if (enabled)
{
cout << "Disabling: " << this->vtable << "[" << this->ord << "]: (" << this->orig << " -> " << this->detour << ")" << endl;
VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, NULL);
this->vtable[ord] = reinterpret_cast<DWORD>(this->orig);
VirtualProtect(mbi.BaseAddress, mbi.RegionSize, mbi.Protect, NULL);
enabled = false;
}
}
void enable()
{
if (!enabled)
{
cout << "Enabling: " << this->vtable << "[" << this->ord << "]: (" << this->orig << " -> " << this->detour << ")" << endl;
VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, NULL);
this->vtable[ord] = reinterpret_cast<DWORD>(this->detour);
VirtualProtect(mbi.BaseAddress, mbi.RegionSize, mbi.Protect, NULL);
enabled = true;
}
}
template <typename T>
T func()
{
return reinterpret_cast<T>(this->orig);
}
};
map<uintptr_t, shared_ptr<VMT_Hook>> VMT_Hook::hooks;