Textractor_test/texthook/texthook.h

57 lines
1.4 KiB
C++

#pragma once
// texthook.h
// 8/24/2013 jichi
// Branch: IHF_DLL/IHF_CLIENT.h, rev 133
//
// 8/24/2013 TODO:
// - Clean up this file
// - Reduce global variables. Use namespaces or singleton classes instead.
#include "types.h"
// Artikash 6/17/2019 TODO: These have the wrong values on x64
/** jichi 12/24/2014
* @param addr function address
* @param frame real address of the function, supposed to be the same as addr
* @param stack address of current stack - 4
* @return If success, which is reverted
*/
inline std::atomic<bool (*)(LPVOID addr, DWORD frame, DWORD stack)> trigger_fun = nullptr;
// jichi 9/25/2013: This class will be used by NtMapViewOfSectionfor
// interprocedure communication, where constructor/destructor will NOT work.
class TextHook
{
public:
HookParam hp;
union
{
uint64_t address;
void* location;
}; // Absolute address
bool Insert(HookParam hp, DWORD set_flag);
void Clear();
private:
void Read();
bool InsertHookCode();
bool InsertReadCode();
void Send(uintptr_t dwDatabase);
int GetLength(uintptr_t base, uintptr_t in); // jichi 12/25/2013: Return 0 if failed
int HookStrlen(BYTE* data);
void RemoveHookCode();
void RemoveReadCode();
volatile DWORD useCount;
HANDLE readerThread, readerEvent;
bool err;
BYTE trampoline[x64 ? 140 : 40];
};
enum { MAX_HOOK = 2500, HOOK_BUFFER_SIZE = MAX_HOOK * sizeof(TextHook), HOOK_SECTION_SIZE = HOOK_BUFFER_SIZE * 2 };
// EOF