计算机网络课程设计端口扫描实验报告

1、目录TOC o 1-5 h z HYPERLINK l bookmark2 o Current Document 1需求分析3课程设计目的3课程设计内容3课程设计要求3 HYPERLINK l bookmark4 o Current Document 2概要设计32.1原理概述32.2运行环境3基本设计思路3功能模块设计3 HYPERLINK l bookmark6 o Current Document 3详细设计33.1程序流程3 HYPERLINK l bookmark8 o Current Document 3.2主要算法5主要数据结构6主要函数说明6 HYPERLINK l bookm

2、ark30 o Current Document 4用户使用手册7 HYPERLINK l bookmark32 o Current Document 5项目分析与总结75.1项目分析7总结与建议8附录A源程序代码文件说明8附录B参考文献20需求分析课程设计目的加深对TCP/IP的理解，熟悉socket编程。课程设计内容实现一个扫描器，使用TCPconnect进行端口扫描，并把扫描到的结果记录下来。课程设计要求Windows或Linux环境下，程序在单机上运行；使用端口扫描对一台主机进行扫描，并显示出结果；对一个网段进行IP扫描，显示出结果；提供友好的用户界面。概要设计原理概述TCPconne

3、ct扫描是最基本的扫描，操作系统提供的connect()系统调用，用来与每一个感兴趣的目标计算机的端口进行连接。如果端口处于侦听状态，那么connect()就能成功。否则，这个端口是不能用的，即没有提供服务。运行环境Windowsxp，VC+6.0基本设计思路创建一个CSocket套接字，通过CSocket的Connect函数测试该主机的某个端口是否能够连通，获得该端口的打开状态。功能模块设计测试主机某个端口是否打开；“扫描结果”标题栏；扫描单个或多个端口的单选按钮；“扫描”，“停止”，“保存”按钮。详细设计程序流程主要算法测试主机某个端口是否打开的函数TestConnection()：BOO

4、LCMyDlg:TestConnection(CStringIP,UINTnPort)CSocket*pSocket;pSocket=newCSocket;ASSERT(pSocket);if(!pSocket-Create()deletepSocket;pSocket=NULL;returnfalse;while(!pSocket-Connect(IP,nPort)deletepSocket;pSocket=NULL;returnfalse;pSocket-Close();deletepSocket;returntrue;响应单选按钮“扫描单个端口”和“扫描多个端口”的单击消息：voidCM

5、yDlg:OnRadio1Single()m_bSinglePort=true;m_cSinglePort.EnableWindow();m_cPortFrom.EnableWindow(false);m_cPortTo.EnableWindow(false);m_cBtnStop.EnableWindow(false);voidCMyDlg:OnRadio2Range()m_bSinglePort=false;m_cSinglePort.EnableWindow(false);m_cPortFrom.EnableWindow();m_cPortTo.EnableWindow();m_cBtn

6、Stop.EnableWindow(false);显示列表框标题栏的成员函数：/增加列表框标题栏的某一列BOOLCMyDlg:AddColumn(LPCTSTRstrItem,intnItem,intnSubItem,intnMask,intnFmt)LV_COLUMNlvc;lvc.mask=nMask;lvc.fmt=nFmt;lvc.pszText=(LPTSTR)strItem;lvc.cx=m_cResult.GetStringWidth(lvc.pszText)+25;if(nMask&LVCF_SUBITEM)if(nSubItem!=-1)lvc.iSubItem=nSubIt

7、em;elselvc.iSubItem=nItem;returnm_cResult.InsertColumn(nItem,&lvc);/在列表框中加一条BOOLCMyDlg:AddItem(intnItem,intnSubItem,LPCTSTRstrItem,intnImageIndex)LV_ITEMlvItem;lvItem.mask=LVIF_TEXT;lvItem.iItem=nItem;lvItem.iSubItem=nSubItem;lvItem.pszText=(LPTSTR)strItem;if(nImageIndex!=-1)lvItem.mask|=LVIF_IMAGE;

8、lvItem.iImage|=LVIF_IMAGE;if(nSubItem=0)returnm_cResult.InsertItem(&lvItem);returnm_cResult.SetItem(&lvItem);/加一列标题栏字符voidCMyDlg:AddHeader(LPTSTRhdr)if(m_pColumns)m_pColumns-AddTail(hdr);/显示列表框标题栏voidCMyDlg:ShowHeaders()intnIndex=0;POSITIONpos=m_pColumns-GetHeadPosition();while(pos)CStringhdr=(CStri

9、ng)m_pColumns-GetNext(pos);AddColumn(hdr,nIndex+);“扫描”，“停止”，“保存”按钮，见附录程序。主要数据结构及主要函数说明测试主机某个端口是否打开TestConnection函数；“扫描结果标题栏成员函数AddHeader,AddColumn,ShowHeaders；在列表框中添加字符串的函数AddItem；扫描单个或多个端口的单选按钮OnRadioSingle()和OnRadioRange()；“扫描”，停止”，保存”按钮OnButtonlStart(),OnButton2Stop(),OnButton3Save()；用户使用手册输入要扫描的

10、主机IP地址,选择“扫描单个端口”或“扫描多个端口”,若选择前者,则输入单个端口号；若选择后者,则输入端口范围。再输入扫描次数(默认值为1),单击“扫描”按钮,扫描结果列表框中将会显示所输入端口的扫描结果。单击“停止”时停在那一刻的状态,并显示已扫描的结果。单击“保存”时,可将结果保存在文本文件中。项目分析与总结5.1项目分析扫描单个端口的结果：扫描多个端口：通过观察，主机IP为10.5.104.36的25号端口是打开的。总结与建议通过这次实验，加深了对端口的理解，也对socket编程有了进一步的认识。实验中遇到许多函数和定义需要上网查阅资料，而且调试的过程也比较困难，需要向同学请教。所以，今

11、后在编程和查阅资料方面的能力有待于进一步去提高。附录A源程序代码文件说明：(1)端口扫描Dlg.h：#if!defined(AFX_DLG_H_37F5060C_6D8B_42F0_90D9_FBA754BAD52B_INCLUDED_)#defineAFX_DLG_H_37F5060C_6D8B_42F0_90D9_FBA754BAD52B_INCLUDED_#if_MSC_VER1000#pragmaonce#endif/_MSC_VER1000#include#include#include#include#include/扫描结果typedefstructintnAttempts;TC

12、HARIPAddress16;TCHARport5;BOOLbStatus;/1=open,0=closeDATA;/CMyDlgdialogclassCMyDlg:publicCDialog/Constructionpublic:CMyDlg(CWnd*pParent=NULL);/standardconstructor/DialogData/AFX_DATA(CMyDlg)enumIDD=IDD_MY_DIALOG;CProgressCtrlm_cProgress;CListCtrlm_cResult;CIPAddressCtrlm_cIP;CEditm_cAttempts;CEditm_

13、cPortTo;CEditm_cPortFrom;CEditm_cSinglePort;CButtonm_cBtnStop;CButtonm_cBtnScan;/AFX_DATA/ClassWizardgeneratedvirtualfunctionoverrides/AFX_VIRTUAL(CMyDlg)protected:virtualvoidDoDataExchange(CDataExchange*pDX);/DDX/DDVsupport/AFX_VIRTUAL/Implementationprotected:HICONm_hIcon;BOOLTestConnection(CString

14、IP,UINTnPort);/测试主机某个端口是否打开voidShowHeaders(void);/显示列表框标题栏voidAddHeader(LPTSTRhdr);/增加一列标题栏字符AddItem(intnItem,intnSubItem,LPCTSTRstrItem,intnImageIndex=-l);/向m_cResult输出一个结果/向输出结构列表控件增加一列BOOLAddColumn(LPCTSTRstrItem,intnItem,intnSubItem=-1,intnMask=LVCF_FMT|LVCF_WIDTH|LVCF_TEXT|LVCF_SUBITEM,intnFmt=

15、LVCFMT_LEFT);/变量UINTm_nMaxAttempts;/试图连接次数的最大值BOOLm_bSinglePort;/是否只扫描单个端口UINTm_minPort,m_maxPort;/扫描端口的范围UINTm_nCounter;/端口的个数CStringList*m_pColumns;/列表框标题栏CPtrList*m_pStatusList;/保存扫描结果的链表/Generatedmessagemapfunctions/AFX_MSG(CMyDlg)virtualBOOLOnInitDialog();afx_msgvoidOnSysCommand(UINTnID,LPARAMl

16、Param);afx_msgvoidOnPaint();afx_msgHCURSOROnQueryDragIcon();afx_msgvoidOnButton1Start();afx_msgvoidOnButton2Stop();afx_msgvoidOnButton3Save();afx_msgvoidOnRadio1Single();afx_msgvoidOnRadio2Range();/AFX_MSGDECLARE_MESSAGE_MAP();/AFX_INSERT_LOCATION/MicrosoftVisualC+willinsertadditionaldeclarationsimm

17、ediatelybeforethepreviousline.#endif/!defined(AFX_DLG_H_37F5060C_6D8B_42F0_90D9_FBA754BAD52B_INCLUDED_)(2)端口扫描Dlg.cpp：#includestdafx.h#include端口扫描.h#include端口扫描Dlg.h#ifdef_DEBUG#definenewDEBUG_NEW#undefTHIS_FILEstaticcharTHIS_FILE=_FILE_;#endif/CAboutDlgdialogusedforAppAboutclassCAboutDlg:publicCDia

18、logpublic:CAboutDlg();/DialogData/AFX_DATA(CAboutDlg)enumIDD=IDD_ABOUTBOX;/AFX_DATA/ClassWizardgeneratedvirtualfunctionoverrides/AFX_VIRTUAL(CAboutDlg)protected:virtualvoidDoDataExchange(CDataExchange*pDX);/DDX/DDVsupport/AFX_VIRTUAL/Implementationprotected:/AFX_MSG(CAboutDlg)/AFX_MSGDECLARE_MESSAGE

19、_MAP();CAboutDlg:CAboutDlg():CDialog(CAboutDlg:IDD)/AFX_DATA_INIT(CAboutDlg)/AFX_DATA_INITvoidCAboutDlg:DoDataExchange(CDataExchange*pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CAboutDlg)/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CAboutDlg,CDialog)/AFX_MSG_MAP(CAboutDlg)/Nomessagehandlers/AFX_MSG_MAPEND_MESSA

20、GE_MAP()/CMyDlgdialogCMyDlg:CMyDlg(CWnd*pParent/*=NULL*/):CDialog(CMyDlg:IDD,pParent)/在对话框的构造函数中初始化成员变量/AFX_DATA_INIT(CMyDlg)/AFX_DATA_INIT/NotethatLoadIcondoesnotrequireasubsequentDestroyIconinWin32m_hIcon=AfxGetApp()-LoadIcon(IDR_MAINFRAME);m_pColumns=newCStringList;ASSERT(m_pColumns);m_bSinglePor

21、t=true;m_nMaxAttempts=1;m_pStatusList=newCPtrList;ASSERT(m_pStatusList);voidCMyDlg:DoDataExchange(CDataExchange*pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CMyDlg)DDX_Control(pDX,IDC_PROGRESS1,m_cProgress);DDX_Control(pDX,IDC_LIST1,m_cResult);DDX_Control(pDX,IDC_IPADDRESS1,m_cIP);DDX_Control(pDX,I

22、DC_EDIT4_ATTEMPTS,m_cAttempts);DDX_Control(pDX,IDC_EDIT3_SINGLE_PORT_TO,m_cPortTo);DDX_Control(pDX,IDC_EDIT2_SINGLE_PORT_FROM,m_cPortFrom);DDX_Control(pDX,IDC_EDIT1_SINGLE_PORT,m_cSinglePort);DDX_Control(pDX,IDC_BUTTON2_STOP,m_cBtnStop);DDX_Control(pDX,IDC_BUTTON1_START,m_cBtnScan);/AFX_DATA_MAPBEGI

23、N_MESSAGE_MAP(CMyDlg,CDialog)/AFX_MSG_MAP(CMyDlg)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(IDC_BUTTON1_START,OnButton1Start)ON_BN_CLICKED(IDC_BUTTON2_STOP,OnButton2Stop)ON_BN_CLICKED(IDC_BUTTON3_SAVE,OnButton3Save)ON_BN_CLICKED(IDC_RADIO1_SINGLE,OnRadio1Single)ON_BN_CLICKED(I

24、DC_RADIO2_RANGE,OnRadio2Range)/AFX_MSG_MAPEND_MESSAGE_MAP()/CMyDlgmessagehandlersBOOLCMyDlg:OnInitDialogO/设置按钮的初始状态和列表框的风格CDialog:OnInitDialog();/AddAbout.menuitemtosystemmenu./IDM_ABOUTBOXmustbeinthesystemcommandrange.ASSERT(IDM_ABOUTBOX&0 xFFF0)=IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOXAppendMenu(MF_SEPAR

25、ATOR);pSysMenu-AppendMenu(MF_STRING,IDM_ABOUTBOX,strAboutMenu);/Settheiconforthisdialog.Theframeworkdoesthisautomatically/whentheapplicationsmainwindowisnotadialogSetIcon(m_hIcon,TRUE);/SetbigiconSetIcon(m_hIcon,FALSE);/Setsmallicon/TODO:Addextrainitializationhere/给列表框加标题栏AddHeader(_T(IP地址)；/加一列标题栏字

26、符AddHeader(_T(端口号)；AddHeader(_T(端口状态)；AddHeader(_T(尝试连接次数)；AddHeader(_T(标记)；ShowHeaders();/设置扫描单个端口CheckRadioButton(IDC_RADIO1_SINGLE,IDC_RADIO2_RANGE,IDC_RADIO1_SINGLE);/设置控件的默认状态m_cSinglePort.EnableWindow();m_cPortFrom.EnableWindow(false);m_cPortTo.EnableWindow(false);m_cBtnStop.EnableWindow(false

27、);m_cAttempts.SetWindowText(_T(1);returnTRUE;/returnTRUEunlessyousetthefocustoacontrolvoidCMyDlg:OnSysCommand(UINTnID,LPARAMlParam)if(nID&0 xFFF0)=IDM_ABOUTBOX)CAboutDlgdlgAbout;dlgAbout.DoModal();elseCDialog:OnSysCommand(nID,lParam);/Ifyouaddaminimizebuttontoyourdialog,youwillneedthecodebelow/todra

28、wtheicon.ForMFCapplicationsusingthedocument/viewmodel,/thisisautomaticallydoneforyoubytheframework.voidCMyDlg:OnPaint()if(IsIconic()CPaintDCdc(this);/devicecontextforpaintingSendMessage(WM_ICONERASEBKGND,(WPARAM)dc.GetSafeHdc(),0);/CentericoninclientrectangleintcxIcon=GetSystemMetrics(SM_CXICON);int

29、cyIcon=GetSystemMetrics(SM_CYICON);CRectrect;GetClientRect(&rect);intx=(rect.Width()-cxIcon+1)/2;inty=(rect.Height()-cyIcon+1)/2;/Drawtheicondc.DrawIcon(x,y,m_hIcon);elseCDialog:OnPaint();/Thesystemcallsthistoobtainthecursortodisplaywhiletheuserdrags/theminimizedwindow.HCURSORCMyDlg:OnQueryDragIcon(

30、)return(HCURSOR)m_hIcon;voidCMyDlg:OnButton1Start()/“扫描”按钮/TODO:AddyourcontrolnotificationhandlercodehereCStringbtnTxt,IP;UINTnSinglePort;BYTEf1,f2,f3,f4;TCHARtemp10=0;m_cProgress.SetPos(0);m_cResult.DeleteAllItems();POSITIONp=m_pStatusList-GetHeadPosition();while(p)POSITIONtemp=p;DATA*pNode=(DATA*)

31、m_pStatusList-GetNext(p);m_pStatusList-RemoveAt(temp);if(pNode)/pNode!=nulldeletepNode;if(m_cIP.IsBlank()MessageBox(请输入主机IP地址)；return;if(m_cIP.GetAddress(f1,f2,f3,f4)4)MessageBox(请输入有效的IP地址)；return;IP=_itoa(f1,temp,10);IP+=_T(.);IP+=_itoa(f2,temp,10);IP+=_T(.);IP+=_itoa(f3,temp,10);IP+=_T(.);IP+=_it

32、oa(f4,temp,10);m_cBtnStop.EnableWindow();m_cBtnScan.EnableWindow(false);if(m_bSinglePort)CStringport;m_cSinglePort.GetWindowText(port);m_minPort=m_maxPort=nSinglePort=atoi(port);elseCStringport1,port2;m_cPortFrom.GetWindowText(port1);m_cPortTo.GetWindowText(port2);m_minPort=atoi(port1);m_maxPort=ato

33、i(port2);m_cProgress.SetRange32(0,m_maxPort-m_minPort+1);m_cProgress.SetStep(1);if(!m_bSinglePort&m_maxPortm_minPort)MessageBox(_T(您输入的端口范围有误，请重新输入)；return;UINTm_nMaxAttempts=GetDlgItemInt(IDC_EDIT4_ATTEMPTS);for(m_nCounter=m_minPort;m_nCounter=m_maxPort;m_nCounter+)BOOLbIsOpen=false;UINTnAttempt=1;

34、while(nAttemptSetWindowText(str)；str.Empty()；bIsOpen=TestConnection(IP，m_nCounter)；if(bIsOpen)DATA*pNode=newDATA；ASSERT(pNode)；strcpy(pNode-IPAddress，IP.GetBuffer(IP.GetLength()；strcpy(pNode-port，_itoa(m_nCounter，temp，10)；pNode-bStatus=1；/openpNode-nAttempts=nAttempt；m_pStatusList-AddTail(pNode)；nAt

35、tempt+；if(!bIsOpen)DATA*pNode=newDATA；ASSERT(pNode)；strcpy(pNode-IPAddress，IP.GetBuffer(IP.GetLength()；strcpy(pNode-port，_itoa(m_nCounter，temp，10)；pNode-bStatus=0；/closepNode-nAttempts=nAttempt-1；m_pStatusList-AddTail(pNode)；MSGmessage；if(:PeekMessage(&message，NULL，0，0，PM_REMOVE):TranslateMessage(&m

36、essage)；:DispatchMessage(&message)；m_cProgress.StepIt()；CStatic*pStatic=(CStatic*)GetDlgItem(IDC_STATIC_STATUS)；pStatic-SetWindowText(CString)_T(当前扫描状态)；m_cBtnScan.EnableWindow()；m_cBtnStop.EnableWindow(false)；UINTnIndex=0；POSITIONpos=m_pStatusList-GetHeadPosition()；while(pos)DATA*pNode=(DATA*)m_pSt

37、atusList-GetNext(pos);AddItem(nIndex,0,pNode-IPAddress);AddItem(nIndex,1,pNode-port);if(pNode-bStatus)AddItem(nIndex,2,_T(Open);AddItem(nIndex,4,_T(*);elseAddItem(nIndex,2,_T(Close);AddItem(nIndex,4,_T();AddItem(nIndex+,3,_itoa(pNode-nAttempts,temp,10);voidCMyDlg:OnButton2Stop()/“停止”按钮/TODO:Addyourc

38、ontrolnotificationhandlercodeherem_nCounter=m_maxPort+1;m_cBtnStop.EnableWindow(false);m_cBtnScan.EnableWindow();CStatic*pStatic=(CStatic*)GetDlgItem(IDC_STATIC_STATUS);pStatic-SetWindowText(CString)_T(当前扫描状态)；voidCMyDlg:OnButton3Save()/“保存”按钮/TODO:AddyourcontrolnotificationhandlercodehereC*pDlg=new

39、C(FALSE,_T(txt),NULL,OFN_OVERWRITEPROMPT|OFN_EXPLORER|OFN_LONGNAMES,_T(Scannedportsfiles(*.txt),this);ASSERT(pDlg);if(pDlg-DoModal()=IDOK)intnHandle,retVal;nHandle=_open(pDlg-GetPathName(),_O_BINARY|_O_CREAT|_O_TRUNC|_O_RDWR);if(nHandle=-1)MessageBox(_T(Unabletoopenoutputwrite.),_T(Error),MB_OK|MB_I

40、CONEXCLAMATION);deletepDlg;return;POSITIONpos=m_pStatusList-GetHeadPosition();while(pos)CStringbuffer;DATA*pNode=(DATA*)m_pStatusList-GetNext(pos);buffer=pNode-IPAddress;buffer+=_T(,);buffer+=pNode-port;buffer+=_T(,);if(pNode-bStatus)buffer+=_T(Open);elsebuffer+=_T(Close);buffer+=_T(rn0);retVal=_write(nHandle,(void*)buffer.GetBuffer(buffer.GetLength(),buffer.GetLength();if(