testoverflow.cpp

“网络安全技术实践与代码详解”实例代码

#include "stdafx.h"
#include "TestOverflow.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif


CWinApp theApp;

using namespace std;
void TestOverflow(char *buf)
{
	CFile file; 
	CFileException er; 
	if(!file.Open(_T("TestOverflow.txt"),CFile::modeRead,&er)) 
	{ 
		er.ReportError(); 
		return; 
	} 
	
	int x = file.GetLength(); 
	file.Read(buf,x);

}

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
	int nRetCode = 0;

	// initialize MFC and print and error on failure
	if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
	{
		// TODO: change error code to suit your needs
		cerr << _T("Fatal Error: MFC initialization failed") << endl;
		nRetCode = 1;
	}
	else
	{

		char buf[10]; 
		TestOverflow(buf); 
	}

	return nRetCode;
}