mysnifferdlg.cpp

windos下网络监视器嗅觉器（sniffer）例子程序

// MySnifferDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MySniffer.h"
#include "MySnifferDlg.h"
#include ".\mysnifferdlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

PROTN2T aOfProto[ PROTO_NUM + 1] = 
{  
	{ IPPROTO_IP   , "IP" },
	{ IPPROTO_ICMP , "ICMP" },  
	{ IPPROTO_IGMP , "IGMP" }, 
	{ IPPROTO_GGP  , "GGP" },  
	{ IPPROTO_TCP  , "TCP" },  
	{ IPPROTO_PUP  , "PUP" },  
	{ IPPROTO_UDP  , "UDP" },  
	{ IPPROTO_IDP  , "IDP" },  
	{ IPPROTO_ND   , "NP"  },  
	{ IPPROTO_RAW  , "RAW" },  
	{ IPPROTO_MAX  , "MAX" },
	{ NULL , "" } 
};  

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMySnifferDlg dialog

CMySnifferDlg::CMySnifferDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMySnifferDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMySnifferDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_threadID = 0;
}

void CMySnifferDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMySnifferDlg)
	DDX_Control(pDX, IDC_BUTTON1, m_Start);
	DDX_Control(pDX, IDC_LIST2, m_ListCtrl);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMySnifferDlg, CDialog)
	//{{AFX_MSG_MAP(CMySnifferDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON2, OnBnClickedButton2)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMySnifferDlg message handlers

BOOL CMySnifferDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	WORD		wVersionRequested;
	WSADATA		wsaData;
	int			err;

	CHAR		szHostName[128] = {0};
	HOSTENT*	pHost = NULL;
	CHAR*		pszIp = NULL;
	int			iNum = 0;

	wVersionRequested = MAKEWORD(2, 0);
	err = WSAStartup(wVersionRequested, &wsaData);
	if(err != 0)
	{
		AfxMessageBox("Load WinSock DLL failed!");
		exit(1);
	}

	if(gethostname(szHostName, 128) == 0)
	{
		pHost = gethostbyname(szHostName);
		if(pHost != NULL)
		{
			pszIp = inet_ntoa(*(in_addr*)pHost->h_addr_list[iNum]);
			m_ipsource = inet_addr(pszIp);
		}
		else	AfxMessageBox("pszIp = NULL");
	}
	else AfxMessageBox("can't find host name!");

	DWORD dwStyle = GetWindowLong(m_ListCtrl.GetSafeHwnd(), GWL_STYLE);
	dwStyle &= ~LVS_TYPEMASK;
	dwStyle |= LVS_REPORT;
	SetWindowLong(m_ListCtrl.GetSafeHwnd(), GWL_STYLE, dwStyle);

	m_ListCtrl.InsertColumn(0, "数据", LVCFMT_LEFT, 525);
	m_ListCtrl.InsertColumn(0, "大小", LVCFMT_LEFT, 80);
	m_ListCtrl.InsertColumn(0, "目的端口", LVCFMT_LEFT, 60);
	m_ListCtrl.InsertColumn(0, "目的地址", LVCFMT_LEFT, 100);
	m_ListCtrl.InsertColumn(0, "源端口", LVCFMT_LEFT, 60);
	m_ListCtrl.InsertColumn(0, "源地址", LVCFMT_LEFT, 100);
	m_ListCtrl.InsertColumn(0, "协议", LVCFMT_LEFT, 40);

	::SendMessage(m_ListCtrl.m_hWnd, LVM_SETEXTENDEDLISTVIEWSTYLE,
		LVS_EX_FULLROWSELECT, LVS_EX_FULLROWSELECT);

	SetWindowText("My Sample Sniffer");
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

char *get_proto_name(unsigned char proto)
{
	BOOL bFound = FALSE;
	for(int i=0; i < PROTO_NUM; i++)
	{
		if(aOfProto[i].proto == proto)
		{
			bFound = TRUE;
			break;
		}
	}
	if(bFound)
		return aOfProto[i].pprototext;
	return aOfProto[PROTO_NUM].pprototext;
}

UINT threadFunc ( LPVOID p )
{
 	CMySnifferDlg *pDlg = static_cast<CMySnifferDlg *>(p) ;
	char  buf [1000] , *bufwork ;
	MSG   msg ;
	int   iRet ;
	DWORD dwErr ;
    char  *pSource , *pDest ;
	IPHEADER *pIpHeader ;
	in_addr ina ;
	char   szSource [16] , szDest[16] , szErr [ 50 ];
	char *pLastBuf = NULL ;
	/*-------------------zhuwei add(2002.11.9)-----------------------------*/
	int		HdrLen, totallen;
	WORD	sourport, destport;

	//struct IPPacketHead		*pIPHead;
	struct TCPPacketHead	*pTCPHead;
	//struct ARPPacket		*pARPHead;
	struct ICMPPacketHead	*pICMPHead;
	struct UDPPacketHead	*pUDPHead;
	BYTE					*pdata = NULL;

	/*---------------------------------------------------------------------*/

    PeekMessage(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE)	; // Force to make the queue
 	pDlg->m_threadID = GetCurrentThreadId() ;
	
	while( TRUE )
	{
        if( PeekMessage( &msg , 0 , WM_CLOSE,WM_CLOSE,PM_NOREMOVE ) )
		{
 	        closesocket( pDlg->m_s ) ;
 	        pDlg->m_threadID = 0 ;
			// Only after you see Next message you can press on Start button 
			pDlg->m_Start.EnableWindow(TRUE) ; 
			break ;
		}
		memset( buf , 0 , sizeof(buf) ) ;
		iRet = 	recv( pDlg->m_s , buf , sizeof( buf ) , 0 ) ;
		if( iRet == SOCKET_ERROR )
		{
			dwErr = WSAGetLastError() ;
			sprintf( szErr , "Error recv() = %ld " , dwErr ) ;
			continue ;
		}
		else
			if( *buf )
			{	
				// check IP here
				//  sprintf( szErr , "recv() = %ld " , iRet ) ;
				//	AfxMessageBox( szErr ) ;
				bufwork   = buf ;
        		pIpHeader = (IPHEADER *)bufwork ;
	            WORD iLen = ntohs(pIpHeader->total_len) ;
				while( TRUE )
				{
					if( iLen <= iRet )
					{
 					 	//if( pDlg->IsIpofHost( pIpHeader ) )
						{ // Form the line for m_list
 							ina.S_un.S_addr = pIpHeader->sourceIP ;
							pSource = inet_ntoa( ina ) ;
							strcpy( szSource , pSource ) ;
							ina.S_un.S_addr = pIpHeader->destIP ;
							pDest = inet_ntoa( ina ) ;
							strcpy( szDest , pDest ) ;
							CString str, strProto, strSourPort, strDestPort, strData, strSize;

/*							
							if( pIpHeader->sourceIP == ( pDlg->m_ipcheckedhost ? 
								           pDlg->m_ipcheckedhost : pDlg->m_iphostsource ) )
								strIP.Format("%s -> %s len = %d ttl=%d proto=%s" , szSource , szDest ,