112 lines
2.0 KiB
C++
112 lines
2.0 KiB
C++
#include "..\STDInclude.hpp"
|
|
|
|
namespace Utils
|
|
{
|
|
Hook::~Hook()
|
|
{
|
|
if (Hook::Initialized)
|
|
{
|
|
Hook::Uninstall();
|
|
}
|
|
}
|
|
|
|
Hook* Hook::Initialize(DWORD place, void* stub, bool useJump)
|
|
{
|
|
return Hook::Initialize((void*)place, stub, useJump);
|
|
}
|
|
|
|
Hook* Hook::Initialize(void* place, void* stub, bool useJump)
|
|
{
|
|
if (Hook::Initialized) return this;
|
|
Hook::Initialized = true;
|
|
|
|
Hook::UseJump = useJump;
|
|
Hook::Place = place;
|
|
Hook::Stub = stub;
|
|
|
|
Hook::Original = (char*)Hook::Place + 5 + *(DWORD*)((DWORD)Hook::Place + 1);
|
|
|
|
return this;
|
|
}
|
|
|
|
Hook* Hook::Install()
|
|
{
|
|
Hook::StateMutex.lock();
|
|
|
|
if (!Hook::Initialized || Hook::Installed)
|
|
{
|
|
Hook::StateMutex.unlock();
|
|
return this;
|
|
}
|
|
|
|
Hook::Installed = true;
|
|
|
|
DWORD d;
|
|
VirtualProtect(Hook::Place, sizeof(Hook::Buffer), PAGE_EXECUTE_READWRITE, &d);
|
|
memcpy(Hook::Buffer, Hook::Place, sizeof(Hook::Buffer));
|
|
|
|
char* Code = (char*)Hook::Place;
|
|
|
|
*Code = (char)(Hook::UseJump ? 0xE9 : 0xE8);
|
|
|
|
*(size_t*)&Code[1] = (size_t)Hook::Stub - ((size_t)Hook::Place + 5);
|
|
|
|
VirtualProtect(Hook::Place, sizeof(Hook::Buffer), d, &d);
|
|
|
|
FlushInstructionCache(GetCurrentProcess(), Hook::Place, sizeof(Hook::Buffer));
|
|
|
|
Hook::StateMutex.unlock();
|
|
|
|
return this;
|
|
}
|
|
|
|
void Hook::Quick()
|
|
{
|
|
if (Hook::Installed)
|
|
{
|
|
Hook::Installed = false;
|
|
}
|
|
}
|
|
|
|
Hook* Hook::Uninstall()
|
|
{
|
|
Hook::StateMutex.lock();
|
|
|
|
if (!Hook::Initialized || !Hook::Installed)
|
|
{
|
|
Hook::StateMutex.unlock();
|
|
return this;
|
|
}
|
|
|
|
Hook::Installed = false;
|
|
|
|
DWORD d;
|
|
VirtualProtect(Hook::Place, sizeof(Hook::Buffer), PAGE_EXECUTE_READWRITE, &d);
|
|
|
|
memcpy(Hook::Place, Hook::Buffer, sizeof(Hook::Buffer));
|
|
|
|
VirtualProtect(Hook::Place, sizeof(Hook::Buffer), d, &d);
|
|
|
|
FlushInstructionCache(GetCurrentProcess(), Hook::Place, sizeof(Hook::Buffer));
|
|
|
|
Hook::StateMutex.unlock();
|
|
|
|
return this;
|
|
}
|
|
|
|
void* Hook::GetAddress()
|
|
{
|
|
return Hook::Place;
|
|
}
|
|
|
|
void Hook::Nop(void* place, size_t length)
|
|
{
|
|
memset(place, 0x90, length);
|
|
}
|
|
|
|
void Hook::Nop(DWORD place, size_t length)
|
|
{
|
|
Nop((void*)place, length);
|
|
}
|
|
}
|