mini hook拦截connect函数（全局钩子）

1.将和放入相应工程的位置

2.代码如下：EST_DLL.cpp

// TEST_DLL.cpp : Defines the entry point for the DLL application.
//

#include ""
#include "TEST_DLL.H"
#include <>
#include "NtHookEngine_Test.h"
#include <>

#include <>
#ifndef ULONG_PTR
#define ULONG_PTR unsigned long* 
#endif
#pragma comment(lib, "Ws2_32.lib") 
#pragma comment(lib,"")
//#pragma comment(lib, "")

#pragma data_seg("MySec")
HANDLE m_hModule=NULL;
HHOOK g_HHOOK=NULL;
HMODULE hHookEngineDll;

// BOOL (__cdecl *HookFunction)(ULONG_PTR OriginalFunction, ULONG_PTR NewFunction);
// VOID (__cdecl *UnhookFunction)(ULONG_PTR Function);
// ULONG_PTR (__cdecl *GetOriginalFunction)(ULONG_PTR Hook);
#pragma data_seg()


int WINAPI MyMessageBoxW(SOCKET s,                          
						 const struct sockaddr FAR *name,  
  int namelen);

LRESULT CALLBACK CBTProc(
						 int nCode,      // hook code
						 WPARAM wParam,  // depends on hook code
						 LPARAM lParam   // depends on hook code
						 ){
	//MessageBox(NULL,"CBTProc","CBTProc",MB_OK);
	return CallNextHookEx(g_HHOOK,nCode,wParam,lParam);
}

VOID gjl_Hook(HWND hwnd){
		g_HHOOK=SetWindowsHookEx(WH_CBT,(HOOKPROC)CBTProc,(HINSTANCE)m_hModule,0);
}
VOID gjl_UnHook(){
	UnhookWindowsHookEx(g_HHOOK);
}

//HMODULE dllModule=LoadLibrary(_T(""));
//FARPROC messageboxAddr=GetProcAddress(dllModule,"MessageBoxW");


#include <>

extern "C"_declspec(dllimport) BOOL HookFunction(ULONG_PTR OriginalFunction, ULONG_PTR NewFunction);
extern "C"_declspec(dllimport) VOID UnhookFunction(ULONG_PTR Function);
extern "C"_declspec(dllimport) ULONG_PTR GetOriginalFunction(ULONG_PTR Hook);

BOOL APIENTRY DllMain( HANDLE hModule, 
					  DWORD  ul_reason_for_call, 
					  LPVOID lpReserved
					  )
{
    switch (ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:	
		
		m_hModule=hModule;
		//hHookEngineDll= LoadLibrary(_T("C:\\mailchecker\\backup\\TEST_dll_minihook\\TEST_MFC_HOOK\\Debug\\"));
		//hHookEngineDll= LoadLibrary(_T("C:\\"));
		CHAR szBuf[80];
	//hHookEngineDll = LoadLibrary(_T("C:\\mailchecker\backup\\TEST_dll_minihook\\TEST_DLL\\Debug\\"));
		//Hook();	
// 		if (NULL==hHookEngineDll)
// 		{
// 			DWORD dw=GetLastError();
// 			sprintf(szBuf, "failed: GetLastError returned %u\n", 
// 				 dw);
// 			MessageBox(NULL, szBuf, "Error", MB_OK); 
// 			MessageBox(NULL,"hHookEngineDll fail ","hHookEngineDll fail ",MB_OK);
// 			//126
// 			//MessageBox(NULL,(const char *)error,(const char *)error,MB_OK);
// 		}
		
// 		HookFunction = (BOOL (__cdecl *)(ULONG_PTR, ULONG_PTR))
// 			GetProcAddress(hHookEngineDll, "HookFunction");
// 		
// 		
// 		UnhookFunction = (VOID (__cdecl *)(ULONG_PTR))
// 			GetProcAddress(hHookEngineDll, "UnhookFunction");
// 		
// 		GetOriginalFunction = (ULONG_PTR (__cdecl *)(ULONG_PTR))
// 			GetProcAddress(hHookEngineDll, "GetOriginalFunction");
		
		if (HookFunction == NULL || UnhookFunction == NULL || 
			GetOriginalFunction == NULL)
		{
			MessageBox(NULL,"MINI hook init fail","MINI hook init fail",MB_OK);
			return 0;
		}
		
		
		
		HookFunction((ULONG_PTR)connect,
		(ULONG_PTR) &MyMessageBoxW);
		
		break;
	case DLL_THREAD_ATTACH:		
		
		break;
	case DLL_THREAD_DETACH:		

		break;
	case DLL_PROCESS_DETACH:			

	
		break;
    }
	
    return TRUE;
}

int WINAPI MyMessageBoxW(SOCKET s,                          
						 const struct sockaddr FAR *name,  
  int namelen)
{
	int (WINAPI *pMessageBoxW)(SOCKET s,                          
		const struct sockaddr FAR *name,  
  int namelen);
	
	pMessageBoxW = (int (WINAPI *)(SOCKET s,                          
		const struct sockaddr FAR *name,  
  int namelen))
		GetOriginalFunction((ULONG_PTR) MyMessageBoxW);
	
	MessageBox(NULL,"success","success",MB_OK);
	return pMessageBoxW(s,                          
		name,  
  namelen);
}

LIBRARY "TEST_DLL"
EXPORTS
gjl_Hook @1
gjl_UnHook @2
SEGMENTS
MySec read write shared

4.TEST_DLL.h

#ifndef TestDll_H_
#define TestDll_H_
#ifdef MYLIBDLL
#define MYLIBDLL extern "C" _declspec(dllimport) 
#else
#define MYLIBDLL extern "C" _declspec(dllexport) 
#endif
MYLIBDLL void gjl_Hook(HWND hwnd);
MYLIBDLL void gjl_UnHook();
//You can also write like this:
//extern "C" {
//_declspec(dllexport) int Add(int plus1, int plus2);
//};
#endif

5.在所需需要的地方调用connect函数即可