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API hooking revealed

, 2 Dec 2002 CPOL
The article demonstrates how to build a user mode Win32 API spying system
//---------------------------------------------------------------------------
//
// LockMgr.cpp
//
// SUBSYSTEM: 
//				Generic libraries
// MODULE:    
//
//              Interface declaration of CCSWrapper CRITICAL_SECTION wrapper 
// DESCRIPTION:
//              
//
// AUTHOR:		Ivo Ivanov (ivopi@hotmail.com)
// DATE:		2001 November 13,  version 1.0 
//                                                                         
//---------------------------------------------------------------------------
#include "LockMgr.h"

//---------------------------------------------------------------------------
//
// class CCSWrapper 
//
// CRTICIAL_SECTION user object wrapper
//
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
//
// Constructor
//
//---------------------------------------------------------------------------
CCSWrapper::CCSWrapper()
{
	m_nSpinCount = 0;
	::InitializeCriticalSection( &m_cs );
}

//---------------------------------------------------------------------------
//
// Destructor
//
//---------------------------------------------------------------------------
CCSWrapper::~CCSWrapper()
{
	::DeleteCriticalSection( &m_cs );
}


//---------------------------------------------------------------------------
// Enter 
//
// This function waits for ownership of the specified critical section object 
//---------------------------------------------------------------------------
void CCSWrapper::Enter()
{
	::EnterCriticalSection( &m_cs );
	m_nSpinCount++;
}

//---------------------------------------------------------------------------
// Leave
//
// Releases ownership of the specified critical section object. 
//---------------------------------------------------------------------------
void CCSWrapper::Leave()
{
	m_nSpinCount--;
	::LeaveCriticalSection( &m_cs );
}

//--------------------- End of the file -------------------------------------

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Ivo Ivanov
United States United States
I specialize in OS Internals and Reverse Engineering.
Before joining my current employer I used to run a security blog for malware analysis: http://vinsula.com/security-blog

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