2022年计算机网络课程设计端口扫描实验报告

目录TOC\o"1-4"1需求分析 31.1课程设计目的 31.2课程设计内容 31.3课程设计要求 32概要设计 32.1原理概述 32.2运行环境 32.3基本设计思路 32.4功能模块设计 33详细设计 33.1程序流程 33.2主要算法 53.3主要数据结构 63.4主要函数说明 64用户使用手册 75项目分析与总结 75.1项目分析 75.2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1.1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2.1原理概述TCPconnect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。2.2运行环境Windowsxp，VC++6.02.3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。2.4功能模块设计（1）测试主机某个端口是否打开；（2）“扫描结果”标题栏；（3）扫描单个或多个端口的单选按钮；（4）“扫描”，“停止”，“保存”按钮。3.详细设计3.1程序流程开始扫描开始扫描初始化扫描单个端口？Tm_bSinglePort=true;m_cSinglePort.EnableWindow();m_cPortFrom.EnableWindow(false);m_cPortTo.EnableWindow(false);m_cBtnStop.EnableWindow(false);Fm_bSinglePort=false;m_cSinglePort.EnableWindow(false);m_cPortFrom.EnableWindow();m_cPortTo.EnableWindow();m_cBtnStop.EnableWindow(false);设置端口开始侦听端口有错误？显示结果FT设置下一端口扫描结束3.2主要算法（1）测试主机某个端口是否打开的函数TestConnection（）：BOOLCMyDlg::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;}（2）响应单选按钮“扫描单个端口”和“扫描多个端口”的单击消息：voidCMyDlg::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_cBtnStop.EnableWindow(false);}（3）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=nSubItem; else lvc.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; 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=(CString)m_pColumns->GetNext(pos); AddColumn(hdr,nIndex++); }}（4）“扫描”，“停止”，“保存”按钮，见附录程序。3.3主要数据结构及主要函数说明（1）测试主机某个端口是否打开——TestConnection函数；（2）“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；（3）扫描单个或多个端口的单选按钮——OnRadioSingle()和OnRadioRange()；（4）“扫描”，“停止”，“保存”按钮——OnButton1Start()，OnButton2Stop()，OnButton3Save()；4.用户使用手册输入要扫描的主机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。5.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。5.2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_VER>1000#pragmaonce#endif//_MSC_VER>1000#include<fcntl.h>#include<sys/types.h>#include<sys/stat.h>#include<io.h>#include<afxsock.h> //扫描结果typedefstruct{intnAttempts; TCHARIPAddress[16]; TCHARport[5]; BOOLbStatus;//1=open,0=close}DATA;///////////////////////////////////////////////////////////////////////////////CMyDlgdialogclassCMyDlg:publicCDialog{//Constructionpublic: CMyDlg(CWnd*pParent=NULL); //standardconstructor//DialogData //{{AFX_DATA(CMyDlg) enum{IDD=IDD_MY_DIALOG}; CProgressCtrl m_cProgress; CListCtrl m_cResult; CIPAddressCtrl m_cIP; CEdit m_cAttempts; CEdit m_cPortTo; CEdit m_cPortFrom; CEdit m_cSinglePort; CButton m_cBtnStop; CButton m_cBtnScan; //}}AFX_DATA //ClassWizardgeneratedvirtualfunctionoverrides //{{AFX_VIRTUAL(CMyDlg) protected: virtualvoidDoDataExchange(CDataExchange*pDX); //DDX/DDVsupport //}}AFX_VIRTUAL//Implementationprotected: HICONm_hIcon;BOOLTestConnection(CStringIP,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=-1);//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=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,LPARAMlParam); afx_msgvoidOnPaint(); afx_msgHCURSOROnQueryDragIcon(); afx_msgvoidOnButton1Start(); afx_msgvoidOnButton2Stop(); afx_msgvoidOnButton3Save(); afx_msgvoidOnRadio1Single(); afx_msgvoidOnRadio2Range(); //}}AFX_MSG DECLARE_MESSAGE_MAP()};//{{AFX_INSERT_LOCATION}}//MicrosoftVisualC++willinsertadditionaldeclarationsimmediatelybeforethepreviousline.#endif//!defined(AFX_DLG_H__37F5060C_6D8B_42F0_90D9_FBA754BAD52B__INCLUDED_)（2）端口扫描Dlg.cpp：#include"stdafx.h"#include"端口扫描.h"#include"端口扫描Dlg.h"#ifdef_DEBUG#definenewDEBUG_NEW#undefTHIS_FILEstaticcharTHIS_FILE[]=__FILE__;#endif///////////////////////////////////////////////////////////////////////////////CAboutDlgdialogusedforAppAboutclassCAboutDlg:publicCDialog{public: CAboutDlg();//DialogData //{{AFX_DATA(CAboutDlg) enum{IDD=IDD_ABOUTBOX}; //}}AFX_DATA //ClassWizardgeneratedvirtualfunctionoverrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtualvoidDoDataExchange(CDataExchange*pDX);//DDX/DDVsupport //}}AFX_VIRTUAL//Implementationprotected: //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP()};CAboutDlg::CAboutDlg():CDialog(CAboutDlg::IDD){ //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT}voidCAboutDlg::DoDataExchange(CDataExchange*pDX){ CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP}BEGIN_MESSAGE_MAP(CAboutDlg,CDialog) //{{AFX_MSG_MAP(CAboutDlg) //Nomessagehandlers //}}AFX_MSG_MAPEND_MESSAGE_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 //NotethatLoadIcondoesnotrequireasubsequentDestroyIconinWin32 m_hIcon=AfxGetApp()->LoadIcon(IDR_MAINFRAME);m_pColumns=newCStringList;ASSERT(m_pColumns);m_bSinglePort=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,IDC_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_MAP}BEGIN_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(IDC_RADIO2_RANGE,OnRadio2Range) //}}AFX_MSG_MAPEND_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////////CMyDlgmessagehandlersBOOLCMyDlg::OnInitDialog()//设置按钮的初始状态和列表框的风格{ CDialog::OnInitDialog(); //Add"About..."menuitemtosystemmenu. //IDM_ABOUTBOXmustbeinthesystemcommandrange. ASSERT((IDM_ABOUTBOX&0xFFF0)==IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX<0xF000); CMenu*pSysMenu=GetSystemMenu(FALSE); if(pSysMenu!=NULL) { CStringstrAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if(!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING,IDM_ABOUTBOX,strAboutMenu); } } //Settheiconforthisdialog.Theframeworkdoesthisautomatically //whentheapplication'smainwindowisnotadialog SetIcon(m_hIcon,TRUE); //Setbigicon SetIcon(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);m_cAttempts.SetWindowText(_T("1")); returnTRUE;//returnTRUEunlessyousetthefocustoacontrol}voidCMyDlg::OnSysCommand(UINTnID,LPARAMlParam){if((nID&0xFFF0)==IDM_ABOUTBOX) {CAboutDlgdlgAbout; dlgAbout.DoModal(); } else {CDialog::OnSysCommand(nID,lParam); }}//Ifyouaddaminimizebuttontoyourdialog,youwillneedthecodebelow//todrawtheicon.ForMFCapplicationsusingthedocument/viewmodel,//thisisautomaticallydoneforyoubytheframework.voidCMyDlg::OnPaint(){ if(IsIconic()) { CPaintDCdc(this);//devicecontextforpainting SendMessage(WM_ICONERASEBKGND,(WPARAM)dc.GetSafeHdc(),0); //Centericoninclientrectangle intcxIcon=GetSystemMetrics(SM_CXICON); intcyIcon=GetSystemMetrics(SM_CYICON); CRectrect; GetClientRect(&rect); intx=(rect.Width()-cxIcon+1)/2; inty=(rect.Height()-cyIcon+1)/2; //Drawtheicon dc.DrawIcon(x,y,m_hIcon); } else { CDialog::OnPaint(); }}//Thesystemcallsthistoobtainthecursortodisplaywhiletheuserdrags//theminimizedwindow.HCURSORCMyDlg::OnQueryDragIcon(){return(HCURSOR)m_hIcon;}voidCMyDlg::OnButton1Start()//“扫描”按钮{//TODO:Addyourcontrolnotificationhandlercodehere CStringbtnTxt,IP; UINTnSinglePort; BYTEf1,f2,f3,f4; TCHARtemp[10]="\0";m_cProgress.SetPos(0);m_cResult.DeleteAllItems();POSITIONp=m_pStatusList->GetHeadPosition();while(p){POSITIONtemp=p;DATA*pNode=(DATA*)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+=_itoa(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);}else{CStringport1,port2;m_cPortFrom.GetWindowText(port1);m_cPortTo.GetWindowText(port2);m_minPort=atoi(port1);m_maxPort=atoi(port2);m_cProgress.SetRange32(0,m_maxPort-m_minPort+1);m_cProgress.SetStep(1);}if(!m_bSinglePort&&m_maxPort<m_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;while(nAttempt<=m_nMaxAttempts&&!bIsOpen){TCHARtemp[10]="\0";CStringstr=_T("尝试连接端口：");str+=itoa(m_nCounter,temp,10);str+=_T(",IP地址为=");str+=IP;str+=_T(",尝试次数为=");str+=itoa(nAttempt,temp,10);CStatic*pStatic=(CStatic*)GetDlgItem(IDC_STATIC_STATUS);pStatic->SetWindowText(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);}nAttempt++;}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(&message);::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_pStatusList->GetNext(pos);AddItem(nIndex,0,pNode->IPAddress);AddItem(nIndex,1,pNode->port);if(pNode->bStatus){AddItem(nIndex,2,_T("Open"));AddItem(nIndex,4,_T("*"));}else{AddItem(nIndex,2,_T("Close"));AddItem(nIndex,4,_T(""));}AddItem(nIndex++,3,_itoa(pNode->nAttempts,temp,10));}}voidCMyDlg::OnButton2Stop()//“停止”按钮{//TODO:Addyourcontrolnotificationhandlercodehere m_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:Addyourcontrolnotificationhandlercodehere CFileDialog*pDlg=newCFileDialog(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("Unabletoopenoutputfiletowrite."), _T("Error"), MB_OK|MB_ICONEXCLAMATION); 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"); else buffer+=_T("Close"); buffer+=_T("\r\n\0"); retVal=_write(nHandle, (void*)buffer.GetBuffer(buffer.GetLength()), buffer.GetLength()); if(retVal!=buffer.GetLength()) { MessageBox(_T("Anerroroccuredwhilewritingrecords."), _T("Error"),MB_OK|MB_ICONEXCLAMATION); deletepDlg; return; } buffer.Empty(); } _close(nHandle); } deletepDlg;}voidCMyDlg::OnRadio1Single(){//TODO:Addyour