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