QSniffer:跨平台网络嗅探工具的原理与应用

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资源摘要信息: "QSniffer是一个基于winpcap、libpcap和Qt5开发的网络嗅探器。该工具能够记录每个接收到的数据包的接收时间、源主机和目的主机的IP地址及MAC地址,并能识别该数据包所使用的协议类型。QSniffer还可以展示数据包中TCP或UDP协议所使用的端口号,并具有跨平台使用的能力。其特点之一是能够解析通信中使用的QQ号码。该项目的版本标识为alpha1_0。" 知识点详细说明: 1. 网络嗅探器原理: 网络嗅探器(也称为网络分析器或网络嗅探软件)是一种监听网络流量并捕获经过网络接口的数据包的工具。它通过网络接口卡(NIC)直接访问链路层数据,用于网络故障诊断、性能监控、安全分析等多种用途。QSniffer作为一个网络嗅探器,它的核心功能就是捕获和分析通过网络传输的数据包。 2. winpcap和libpcap: winpcap是Windows平台上的一个库,而libpcap是类Unix系统上的一个库,两者都用于网络数据包捕获。这两个库提供了捕获网络数据包、在用户空间和内核空间之间传输数据包以及过滤数据包等函数。它们能够使应用程序绕过操作系统的正常网络协议栈,直接访问网络数据包。QSniffer正是利用这两个库的特性来实现网络数据包捕获的功能。 3. Qt5: Qt5是一个跨平台的应用程序框架,广泛用于开发图形用户界面程序。它允许开发者使用C++语言来编写代码,并提供了丰富的库用于创建窗口、对话框、按钮等界面元素。QSniffer使用Qt5框架,不仅能够实现跨平台的运行能力,而且还能够提供用户友好的图形界面,方便用户进行交互操作。 4. 数据包捕获及分析: QSniffer能够记录每个数据包的接收时间、源和目的主机的IP及MAC地址,并识别数据包的协议类型(如TCP或UDP)。此外,还能展示数据包中TCP或UDP协议所使用的端口号。这是网络分析中的核心内容,通常涉及对网络协议栈的理解,包括物理层、数据链路层、网络层、传输层等各层次的协议。 5. QQ号码解析: 在特定的数据包分析中,QSniffer具有解析通信中使用的QQ号码的能力。这意味着该嗅探器能够识别并提取QQ通信协议(OICQ)包中的QQ号码信息。这通常涉及对特定应用程序协议的分析和理解,因为不同应用程序可能使用不同的协议和数据格式。 6. 跨平台能力: QSniffer作为基于winpcap/libpcap和Qt5开发的工具,其能够跨平台运行,意味着它能够在Windows、Linux、Mac等操作系统上安装和使用。这种跨平台能力是通过Qt5框架实现的,开发者只需要编写一次代码,就可以编译运行在不同的操作系统上,极大地提高了软件的可用性和移植性。 7. alpha版本说明: QSniffer处于alpha阶段,通常意味着它是早期开发版本,可能还存在一些不完整或不稳定的功能。在此阶段,软件的主要目标通常是测试和改进功能,修复已知的bug,并收集用户反馈,以便后续进行改进和优化。 8. C++编程语言: QSniffer的开发使用了C++编程语言。C++是一种高级编程语言,具有面向对象的特性,广泛用于系统软件、游戏开发、高性能服务器和客户端应用开发等领域。由于其性能和灵活性,C++成为开发性能敏感型应用程序的首选语言。 9. 文件压缩包说明: 提供的文件压缩包名称为QSniffer-master。这表明当前的文件可能是一个包含了QSniffer项目所有源代码和资源文件的压缩包,并且这个压缩包可能是一个版本控制系统(如Git)的master分支,代表了项目的主分支或稳定版本。
2015-03-17 上传
// ipmonDlg.cpp : implementation file // #include "stdafx.h" #include "ipmon.h" #include "ipmonDlg.h" #include "mstcpip.h" #include "afxsock.h" #include "Iphlpapi.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 , "" } } ; 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 ; } 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() ///////////////////////////////////////////////////////////////////////////// // CIpmonDlg dialog CIpmonDlg::CIpmonDlg(CWnd* pParent /*=NULL*/) : CDialog(CIpmonDlg::IDD, pParent) { //{{AFX_DATA_INIT(CIpmonDlg) //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); m_threadID = 0 ; m_Multihomed = FALSE ; m_Local = TRUE ; } void CIpmonDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CIpmonDlg) DDX_Control(pDX, IDC_LIST, m_ctrList); DDX_Control(pDX, IDC_LOOKUP, m_start); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CIpmonDlg, CDialog) //{{AFX_MSG_MAP(CIpmonDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_LOOKUP, OnLookUp) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CIpmonDlg message handlers BOOL CIpmonDlg::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 CHAR szHostName[128] = {0}; HOSTENT* pHost = NULL; CHAR* pszIp = NULL; int iNum = 0; if(AfxSocketInit(NULL)==FALSE) { AfxMessageBox("Sorry, socket load error!"); return FALSE; } 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("pHost = NULL!"); } else AfxMessageBox("can't find host name!"); // ListView initialize DWORD dwStyle=GetWindowLong(m_ctrList.GetSafeHwnd(),GWL_STYLE); dwStyle&=~LVS_TYPEMASK; dwStyle|=LVS_REPORT; SetWindowLong(m_ctrList.GetSafeHwnd(),GWL_STYLE,dwStyle); m_ctrList.InsertColumn(0,"数据",LVCFMT_LEFT,525); m_ctrList.InsertColumn(0,"大小",LVCFMT_LEFT,80); m_ctrList.InsertColumn(0,"端口",LVCFMT_LEFT,40); m_ctrList.InsertColumn(0,"目的地址",LVCFMT_LEFT,100); m_ctrList.InsertColumn(0,"端口",LVCFMT_LEFT,40); m_ctrList.InsertColumn(0,"源地址",LVCFMT_LEFT,100); m_ctrList.InsertColumn(0,"协议",LVCFMT_LEFT,50); ::SendMessage(m_ctrList.m_hWnd, LVM_SETEXTENDEDLISTVIEWSTYLE, LVS_EX_FULLROWSELECT, LVS_EX_FULLROWSELECT); // Here read all IPs of this host DWORD dwSize = 0 ; GetIpAddrTable( NULL , &dwSize, FALSE ) ; PMIB_IPADDRTABLE pIpAddrTable = (PMIB_IPADDRTABLE )new BYTE [ dwSize ] ; if( pIpAddrTable ) { if( GetIpAddrTable( (PMIB_IPADDRTABLE)pIpAddrTable, // // buffer for IP table &dwSize, // size of buffer FALSE // sort by IP address ) == NO_ERROR ) { if( pIpAddrTable->dwNumEntries > 2 ) // Second is MS TCP loopback IP ( 127.0.0.1 ) { m_Multihomed = TRUE ; char szIP[16]; for( int i = 0 ; i < (int)pIpAddrTable->dwNumEntries ; i++ ) { in_addr ina ; ina.S_un.S_addr = pIpAddrTable->table[i].dwAddr ; char *pIP = inet_ntoa( ina ) ; strcpy( szIP , pIP ) ; if( stricmp( szIP , "127.0.0.1" ) ) m_IPArr.Add(pIpAddrTable->table[i].dwAddr) ; } } } delete [] pIpAddrTable ; } return TRUE; // return TRUE unless you set the focus to a control } void CIpmonDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // If you add a minimize button to your dialog, you will need the code below // to draw the icon. For MFC applications using the document/view model, // this is automatically done for you by the framework. void CIpmonDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(&rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2; // Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } // The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CIpmonDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } UINT threadFunc ( LPVOID p ) { CIpmonDlg *pDlg = static_cast<CIpmonDlg *>(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 ; int HdrLen, totallen; WORD sourport, destport; struct TCPPacketHead *pTCPHead; 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 ; 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 ) { bufwork = buf ; pIpHeader = (IPHEADER *)bufwork ; WORD iLen = ntohs(pIpHeader->total_len) ; while( TRUE ) { if( iLen <= iRet ) { 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; strProto = get_proto_name( pIpHeader->proto ); /*-------------------zhuwei add(2002.11.9)-----------------------------*/ HdrLen = pIpHeader->header_len&0xf; HdrLen *= 4; totallen = ntohs(pIpHeader->total_len); totallen-=HdrLen; switch(pIpHeader->proto) { case IPPROTO_ICMP: { pICMPHead=(struct ICMPPacketHead *)(buf+HdrLen); //strL4.Format(" type:%d code:%d\n",pICMPHead->Type,pICMPHead->Code); strSourPort = "-"; strDestPort = "-"; pdata=((BYTE *)pICMPHead)+ICMP_HEAD_LEN; totallen -= ICMP_HEAD_LEN; break; } case IPPROTO_TCP: { pTCPHead=(struct TCPPacketHead *)(buf+HdrLen); sourport = ntohs(pTCPHead->SourPort); destport = ntohs(pTCPHead->DestPort); //strL4.Format(" sour port:%d,dest port:%d",sourport,destport); strSourPort.Format("%d",sourport); strDestPort.Format("%d",destport); HdrLen = (pTCPHead->HLen)>>4; //in fact only 4 bits HdrLen *= 4; pdata=((BYTE *)pTCPHead)+HdrLen; totallen -= HdrLen; break; } case IPPROTO_UDP: { pUDPHead=(struct UDPPacketHead *)(buf+HdrLen); sourport = ntohs(pUDPHead->SourPort); destport = ntohs(pUDPHead->DestPort); //strL4.Format(" sour port:%d,dest port:%d",sourport,destport); strSourPort.Format("%d",sourport); strDestPort.Format("%d",destport); pdata=((BYTE *)pUDPHead)+UDP_HEAD_LEN; totallen -= UDP_HEAD_LEN; break; } } if(pIpHeader->proto == IPPROTO_ICMP) strData.Format("type:%d code:%d data:%s",pICMPHead->Type,pICMPHead->Code,pdata); else strData.Format(" %s",pdata); strSize.Format("%d",totallen); pDlg->AddData(strProto,szSource,strSourPort,szDest,strDestPort,strSize,strData); if( iLen < iRet ) { iRet -= iLen ; bufwork += iLen ; pIpHeader = (IPHEADER *)bufwork ; } else break ; // pIpHeader->total_len == iRet and go out } else { // read last part of buf. I wrote it , but always recv() read exactly // the lenght of the packet int iLast = iLen - iRet ; pLastBuf = new char [ iLen ] ; int iReaden = iRet ; memcpy( pLastBuf , bufwork , iReaden ) ; iRet = recv( pDlg->m_s , pLastBuf + iReaden , iLast , 0 ) ; if( iRet == SOCKET_ERROR ) { dwErr = WSAGetLastError() ; sprintf( szErr , "Error recv() = %ld " , dwErr ) ; break ; } else { bufwork = pLastBuf ; pIpHeader = (IPHEADER *)bufwork ; if( iRet == iLast ) iRet = iLen ; else { // read all last data iReaden += iRet ; iLast -= iRet ; while( TRUE ) { iRet = recv( pDlg->m_s , pLastBuf +iReaden , iLast , 0 ) ; if( iRet == SOCKET_ERROR ) { dwErr = WSAGetLastError() ; sprintf( szErr , "Error recv() = %ld " , dwErr ) ; break ; } else { iReaden += iRet ; iLast -= iRet ; if( iLast <= 0 ) break ; } } // while } } } } // while if( pLastBuf ) delete [ ] pLastBuf ; } else { AfxMessageBox( "No data on network" ) ; continue ; } } return TRUE ; } void CIpmonDlg::OnLookUp() { // TODO: Add your control notification handler code here char szErr [ 50 ] , szHostName[MAX_PATH]; DWORD dwErr ; SOCKADDR_IN sa; gethostname(szHostName, sizeof(szHostName)) ; m_iphostsource = m_ipsource ; m_ipcheckedhost = ntohl(m_iphost) ; if( 0 == m_threadID ) { SetDlgItemText(IDC_LOOKUP,"停止查看!" ); } else { if( m_threadID ) { PostThreadMessage(m_threadID,WM_CLOSE,0,0) ; SetDlgItemText(IDC_LOOKUP,"开始查看!"); m_start.EnableWindow(FALSE) ; } return ; } DWORD dwBufferLen[10] ; DWORD dwBufferInLen= 1 ; DWORD dwBytesReturned = 0 ; m_s = socket( AF_INET , SOCK_RAW , IPPROTO_IP ) ; if( INVALID_SOCKET == m_s ) { dwErr = WSAGetLastError() ; sprintf( szErr , "Error socket() = %ld " , dwErr ) ; AfxMessageBox( szErr ) ; closesocket( m_s ) ; return ; } int rcvtimeo = 5000 ; if( setsockopt( m_s , SOL_SOCKET , SO_RCVTIMEO , (const char *)&rcvtimeo , sizeof(rcvtimeo) ) == SOCKET_ERROR) { dwErr = WSAGetLastError() ; sprintf( szErr , "Error WSAIoctl = %ld " , dwErr ) ; AfxMessageBox( szErr ) ; closesocket( m_s ) ; return ; } sa.sin_family = AF_INET; sa.sin_port = htons(7000); sa.sin_addr.s_addr= m_iphostsource; if (bind(m_s,(PSOCKADDR)&sa, sizeof(sa)) == SOCKET_ERROR) { dwErr = WSAGetLastError() ; sprintf( szErr , "Error bind() = %ld " , dwErr ) ; AfxMessageBox( szErr ) ; closesocket( m_s ) ; return ; } if( SOCKET_ERROR != WSAIoctl( m_s, SIO_RCVALL , &dwBufferInLen, sizeof(dwBufferInLen), &dwBufferLen, sizeof(dwBufferLen), &dwBytesReturned , NULL , NULL ) ) AfxBeginThread( threadFunc , (LPVOID)this ); else { dwErr = WSAGetLastError() ; sprintf( szErr , "Error WSAIoctl = %ld " , dwErr ) ; AfxMessageBox( szErr ) ; closesocket( m_s ) ; return ; } } void CIpmonDlg::OnOK() { // TODO: Add extra validation here if( NULL != m_threadID ) PostThreadMessage(m_threadID,WM_CLOSE,0,0) ; if( m_IPArr.GetSize() ) m_IPArr.RemoveAll() ; CDialog::OnOK(); } void CIpmonDlg::AddData(CString s0,CString s1, CString s2, CString s3, CString s4, CString s5, CString s6) { int index; index = m_ctrList.InsertItem(0,s0); m_ctrList.SetItem(index,1,LVIF_TEXT,s1, 0, 0, 0,0); m_ctrList.SetItem(index,2,LVIF_TEXT,s2, 0, 0, 0,0); m_ctrList.SetItem(index,3,LVIF_TEXT,s3, 0, 0, 0,0); m_ctrList.SetItem(index,4,LVIF_TEXT,s4, 0, 0, 0,0); m_ctrList.SetItem(index,5,LVIF_TEXT,s5, 0, 0, 0,0); m_ctrList.SetItem(index,6,LVIF_TEXT,s6, 0, 0, 0,0); }