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1、1需求分析31.l课程设计目的31.2 课程设计容31.3 课程设计要求32概要设计32. 1原理概述32.1 运行环境32.2 基本设计思路32.3 功能模块设计33详细设计33. 1程序流程33.1 主要算法53.2 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201 .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（1） WindOWS或LinUX环境下，程序在
2、单机上运行；（2）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；（3）提供友好的用户界面。2 .概要设计2.1 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）
3、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3.2主要算法(1)测试主机某个端口是否打开的函数TeStCOnneetion()：BOOLCMyDlg:：TestConnection(CStringIP,UINTnPort)CSocket*pSocket；pSocket=newCSocket;ASSERT(pSocket)；if(!pSocket-CreateO)deletepSocket；pSocket=NULL;returnfalse；)whiIe(!pSocket-Conne
4、ct(IP,nPort)deletepSocket；pSocket=NULL;returnfalse；1pSocket-Close()；deletepSocket；returntrue；1(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:：OnRadiolSingleOm_bSinglePort=true；m_cSinglePort.EnableWindowO；m_cPortFrom.EnableWindow(false)；m_cPortTo.EnableWindow(false)；m_cBtnStop.EnableWindow(false)；1voidCM
5、yDlg:：OnRadio2RangeOm_bSinglePort=false；m_cSingIePort.Enab1eWindow(false)；m_cPortFrom.EnableWindowO；m_cPortTo.EnableWindowO；m_cBtnStop.EnableWindow(Ialse)；)(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,intnltem,intnSubltem,intnMask,intnFmt)LV_COLUMNIvc;lvc.InaSk=nMask；lvc.fmt=nFm
6、t;lvc.PszText=(LPTSTR)strltem；lvc.cx=m_cResult.GetStringWidthdvc.pszText)+25;if(nMask&LVCF_SUBITEM)if(nSubItem!=-l)lvc.iSubItem=nSubItem;elselvc.iSubItem=nItem;1returnm_cResult.InsertColumn(nltern,&lvc)；)在列表框中加一条BOOLCMyDlg:：AddItem(intnltem,intnSubltern,LPCTSTRstritem,intnlmagelndex)LV_ITEMIvItern；I
7、vItem.mask=LVIF_TEXT；IvItem.iltem=nltem;IvItem.iSub11em-nSub11em；IvItem.pszText=(LPTSTR)stritem；if(nlmagelndex!=-l)IvItem.mask|=LVIF_1MAGE；IvItem.iImage=LVIF_1MAGE；)if(nSubItem-O)returnm_cResult.InsertItem(&lvltern)；returnm_cResult.SetItem(ftlvltem)；)加一列标题栏字符voidCMyDlg:：AddHeader(LPTSTRhdr)if(m_pCol
8、umns)m_pColumns-AddTail(hdr)；)显示列表框标题栏voidCMyDlg:：ShowHeaders0intn!ndex=O;POSITIONpos=m-pColumns-GetHeadPositionO；while(pos)CStringhdr=(CString)m_pColumns-GetNext(pos)；AddColumn(hdr,nlndex+)；)(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AddlIeader,AddColu
9、mn,ShowlIeaders;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OnRadioSingleO和OnRaclioRangeO;(4)“扫描停止”,“保存”按钮OnButtonlStart(),0nButton2Stop(),0nButton3Save()；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，
10、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：王端口扫描主机地址:105. 104 . 36扫描单个端口G扫描多个端口扫描次数:扫描结果：20到 |30工P地址端口号端口状态尝试连接次数标记5.5.5.5,5.5.5.50.0.s0.0.s20212223242s262728*30Close1Close1Close1Close1Close1Open1Close1Close1Close1Close1Close1当前扫描状态扫描停止 I保存通过观察，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
11、，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Dig.h：# if!defined(AFX_DLG_H_37F5060C_6D8B_42F0_90D9_FBA754BAD52B_INCLUDED_)defineAFX_DLG_H_37F5060C_6D8B_42E0_90D9_FBA754BAD52B_INCLUDED_# if_MSC_VER1000# Pragmaoncettendif/MSCVER1000Sinclu
12、de#include#includeincludeinclude扫描结果typedefstructintnAttempts；TCHARIPAddress16；TCHARport5；BOOLbStatus；/1=open,0=close!DATA；Illlltlllllizilizillllizillizziizilizilllizilllinillllllllllllllllllllllll/CMyDlgdialogclassCMyDlg：publicCDialog/Constructionpublic：CMyDlg(CWnd*pParent=NULL)；/standardconstructo
13、r/DialogData/AFX,DATA(CMyDlg)enumIDD=IDD_MY_DIALOG；CProgressCtrlm_cProgress；CListCtrlm_cResult；CIPAddressCtrlm_cIP；CEditm_cAttempts；CEditm_cPortTo；CEditm_cPortFrom；CEditm_cSinglePort；CButtonm_cBtnStop；CButtonm_cBtnScan；/AFX_DATA/ClassWizardgeneratedvirtualfunctionoverrides/(AFX-VIRTUAL(CMyDlg)protec
14、ted：virtualvoidDoDataExchange(CDataExchange*pDX)；/DDX/DDVsupport/AFX_VIRTUAL/Implementationprotected：HICONm_hlcon；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ddltem(intnltem,intnSubltern,LPCTSTRstritem,intnImageIndex=-I)；/向m_cR
15、esult输出一个结果/向输出结构列表控件增加一列BOOLAddColumn(LPCTSTRstritem,intnltem,intnSubItem=-I,intnMask=LVCF,FMTLVCFJVlDTHLVCF_TEXTLVCF_SUBITEM,intnFmt=LVCFMT_LEFT)；/变量UINTBOOL UINTUINTm_nMaxAttempts；m_bSing1ePort； m_minPort,m_maxPort； m_nCounter；CStringList* m_pColumns；试图连接次数的最大值是否只扫描单个端口扫描端口的围端口的个数列表框标题栏CPIrLiSI*m
16、_pSlatusList；保存扫描结果的链表/Generatedmessagemapfunctions/(AFXJlSG(CMyDlg)virtual afx_msg afx_msg afx_msg afx_msg afx_msg afx_msg afx_msg afx_msg /AFX.BOOLOnlnitDialogO;voidOnSysCommand(UINTnIDtLPARAMIParam)；voidOnPaintO;HCURSOROnQueryDragIconO；void void void void void MSGOnButtonlStart()；OnButton2Stop()；
17、OnButtonBSaveO；OnRadiolSingleO;OnRadio2Range()；DECLARE_MESSAGE_MAP()1；(AFXNSERLOCATION)/MicrosoftVisualC+willinsertadditionaldeclarationsimmediatelybeforethepreviousline.#endif/!defined(AFX_DLG_H_37F5060C_6D8B_42F0_90D9_FBA754BAD52B_INCLUDED_)(2)端口扫描Dig.cpp：#includewstdafx.hwinclude端口扫描.h#include端口扫
18、描Dig.h,#ifdef_DEBUGdefinenewDEBUG_NEWIndefTHlS_FILEstaticcharTHIS_FILE=_EILE；#endif1/mi/mu/mu/CAboutDlgdialogusedforAppAboutclassCAboutDlg：publicCDialogpublic：CAboutDlgO;/DialogData/(AFX-DATA(CAboutDlg)enumIDD=IDD,B0UTB0X；/AFX.DTA/ClassWizardgeneratedvirtualfunctionoverrides/AFX_VIRTUAL(CAboutDlg)pr
19、otected：virtualvoidDoDataExchange(CDataExchange*pDX)；/DDX/DDVsupport/AFX_VIRTUAL/Implementationprotected：/(AFXJiSG(CAboutDlg)/AFX_MSGDECLARE_MESSAGE_MAP();CAboutDlg:：CAboutDlgO：CDialog(CAboutDlg:：1DD)(/AFX_DATA_INIT(CAboutDlg)/AFX_DATA_INIT)voidCAboutDlg:：DoDataExchange(CDataExchange*pDX)(CDialog:：D
20、oDataExchange(pDX)；/AFX_DATA_MAP(CAboutDlg)/AFX_DATA_MAP1Beginjiessagejiap(CAboutDig,CDialog)/AFX_MSG_MAP(CAboutDlg)/Nomessagehandlers/AFX_MSG_MAPEND_MESSAGE_MAP()1/Illlllllllllllllimilizillliziimziizilllllllllliziizilllllllll/CMyDlgdialogCMyDlg:CMyDlg(CWnd*pParent/*=NULL*/)：CDialog(CMyDlg：IDD,PPare
21、nl)在对话框的构造函数中初始化成员变量/AFX_DATANlT(CMyDlg)/AFX_DATA_INIT/NotethatLoadIcondoesnotrequireasubsequentDestroyIconinWin32m_hlcon=AfxGetApp()-Loadlcon(IDR_M/INFRAME)；m_PColUnInS=newCStringList;ASSERT(m_pColumns)；m_bSinglePort=true;m_nMaxAttempts=1；m_pStatusList=newCPtrList;ASSERT(m_pStatusList)；)voidCMyDlg:
22、：DoDataExchange(CDataExchange*pDX)CDialog:：DoDataExchange(pDX)；DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, DDX_Control(pDX, /AFX_DATA_MAP )/AFX_DATA_MAP(CMyDlg)IDC.PROGRESS1,m.cProgress)；IDC_LIST1,m.cReslt);I
23、DC_IPADDRESS1,m_cIP)；IDC_EDIT4_ATTEMPTS,m_cAttempts)；IDC_EDIT3_SINGLE_PORT_TO,m.cPortTo)；IDC_EDIT2_SINGLE_P0RT_FR0M,m_cPortFrom)；IDC_EDIT1_SINGLE_PORT,m_cSingIePort)；IDC_BUTT0N2_ST0P,m_cBtnStop)；IDC_BUTTON1_START,m_cBtnScan)；Beginjiessagejiap(CMyDIg,CDiaIOg)/AFX_MSG_MAP(CMyDlg)on_wm_syscommand()on_w
24、m_paint()ON_W_QUERYDRAGICON()ON_BN_CL1CKED(IDC_BUTTON1_START,OnButtonlStart)ON_BN_CLICKED(1DC_BUTTON2_STOP,0nButton2Stop)ON_BN_CL1CKED(1DC_BUTTON3_SAVE,0nButton3Save)0N_BN_CLICKED(IDC_RADI01_SINGLE,OnRadiolSingle)ON_BN_CL1CKED(IDC_RADI02_RANGE,OnRadio2Range)/AFX_MSG_MAPENDJiESSAGEJWO/CMyDlgmessageha
25、ndlersBOOLCMyDlg:：OnInilDialog()设置按钮的初始状态和列表框的风格(CDialog:：OnlnitDialogO；/Addwbout.”menuitemtosystemmenu./IDM_ABOUTBOXmustbeinthesystemcommandrange.assert(idnlboutbox&OxFFFO)=idm_aboutbox)；ASSERTdDNLABOUTBOXppendMenu(MFSEPARATOR)；pSysMenu-ppendMenu(MF_STRING,1DM_ABOUTBOX,StrAboutMenu)；1)/Settheiconfo
26、rthisdialog.Theframeworkdoesthisautomatically/whentheapplicationsmainwindowisnotadialogSetIcon(m_hlcon,TRUE)；/SetbigiconSetIcon(m_hlcon,FALSE)；/Setsmallicon/TODO：Addextrainitializationhere给列表框加标题栏AddHeader(Jr(WIP地址);/加一列标题栏字符AddHeader(_T(端口号)；AddHeader(Jr(端口状态)；AddHeader(_T(尝试连接次数)；AdclHeader(_T(标记)
27、；ShowHeaders()；设置扫描单个端口CheckRadioButton(II)C-RADlOl-SINGLE,IDC_RADI02_RANGE,IDC_RADI01_SINGLE)；设置控件的默认状态m_cSingIePort.EnableWindowO；m_cPortFrom.EnabIeWindow(faIse)；m_cPortTo.EnableWindow(false)；m_cBtnStop.Enab1eWindow(false)；m_cAttempts.SetWindowText(_T(,1)；returnTRUE；/returnTRUEunlessyousetthefocus
28、toacontrol)voidCMyDlg:：OnSysConunand(UlNTnID,LPARAMIParam)if(nID&OxFFFO)=1DM.BOUTBOX)CAboutDlgdIgAbout;dIgAbout.DoModal()；1elseCDialog：OnSysConimand(nlD,IParam)；1)/Ifyouaddaminimizebuttontoyourdialog,youwillneedthecodebelow/todrawtheicon.ForMECapplicationsusingthedocument/viewmodel,/thisisautomatica
29、llydoneforyoubytheframework.voidCMyDlg:：OnPaint()if(IsIconicO)CPaintDCde(this)；/devicecontextforpaintingSendMessage(WM_ICONERASEBKGND,(WPARAM)de.GetSafeHdcO,0)；/Centericoninclientrectangleintcxlcon=GetSystemMetrics(SM_CXICON)；intcylcon=GetSystemMetrics(SM_CYICON)；CRectrect；GetClientRect(ftrect)；intx
30、=(rect.WidthO-cxlcon+1)/2；inty=(rect.HeightO-cylcon+1)/2；/Drawtheiconde.Drawlcon(xty,m_hlcon)；1elseCDialog：OnPaintO;1)/Thesystemcallsthistoobtainthecursortodisplaywhiletheuserdrags/theminimizedwindow.HCURSORCMyDlg:：OnQueryDragIconOreturn(HCURSOR)m_hlcon；)voidCMyDlg:：OnButtonlStartO/扫描按钮/TODO：Addyour
31、controlnotificationhandlercodehereCStringbtnTxt,IP；UINTnSinglePort；BYTEfl,f2,f3,f4;TCHARtemp10=0w;m_cProgress.SetPos(O)；m_cResult.DeleteAllItemsO；POSITIONp=m_pStatusList-GetHeadPosition()；while(p)(POSITIONtemp=p;DATA*pNode=(DT*)m_pStatusList-GetNext(p)；m-pStatusList-Removet(temp)；if(pNode)/pNode!=nu
32、l1deletepNode；)if(m_cIP.IsBlankO)MeSSageBOx(请输入主机IP地址)；return；if(m_cIP.GetAddress(fl,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+jT(.)；IP+=_itoa(f3,temp,10)；IP+=.T(,.,);IP+=_itoa(f4,temp,10)；m_cBtnStop.EnableWindowO；m_cBtnScan.Enab1eWindow(false
33、)；if(m_bSingIePort)CStringport；m_cSingIePort.GetWindowText(port)；m_minPort=m_maxPort=nSinglePort=atoi(port)；elseCStringportl,port2;m_cPortFrom.GetWindowText(port1)；m_cPortTo.GetWindowText(port2)；m_minPort=atoi(portl)；m_maxPort=atoi(port2)；m_cProgress.SetRange32(0,m_maxPornPort+1)；m_cProgress.SetStep
34、(I)；)if(!m_bSinglePorl&m_maxPortm_minPort)(MeSSageBOXCJ(您输入的端口围有误，请重新输入);return；)UINTm_nMaxAttempts=GetDlgItemlnt(IDC_EDIT4_ATTEMPTS)；for(m_nCounter=m_minPort；m_nCounter=m_maxPort；m_nCounter+)(BOOLblspen=false;UINTnAttempt=l;while(nAttemptSetWindowText(str)；str.EmptyO；bIsOpen=TestConnection(IP,m_nCo
35、unter)；if(bisOpen)(DATA*pNode=newDATA；ASSERT(pNode)；strcpy(pNode-IPddress,IP.GetBufferdP.GetLengthO);strcpy(pNode-port,_itoa(m_nCounter,temp,10)；pNode-bStatus=1；/openpNode-nttepts=nAttempt；m_pStatusList-AddTail(pNode)；nttempt+；if(IbIsOpen)(DATA*pNode=newDATA；ASSERT(pNode)；strcpy(pNode-IPAddress,IP.G
36、etBufferdP.GetLength()；strcpy(pNode-port,_itoa(m_nCounter,temp,10)；pNode-bStatus=0；/closepNode-nAttempts=nAttempt-l；m-pStatusList-AddTail(pNode)；MSGmessage；if(：PeekMessage(&message,NULL,0,0,PM_REMOVE)：TranslateMessage(essage)；：DispatchMessage(&message)；)m_cProgress.StepItO；CStatic*pStatic=(CStatic*)
37、GetDlgItem(IDC_STATIC_STATUS)；PStatiC-SetWindowText(CString)_T(当前扫描状态”)；m_cBtnScan.EnableWindowO；m_cBtnStop.Enab1eWindow(false)；UINTnlndex=;POSITIONpos=m_pStatusList-GetHeadPosition()；while(pos)DATA*pNode=(DT*)m_pStatusList-GetNext(pos)；AddItern(nlndex,0,pNo加-IPAddress)；AddItem(nlndex,1,pNode-port)；
38、if(pNode-bStatus)AddItem(nIndex,2,_T(ffOpen)；Addltem(nlndex,4,_T(*)；elseAddItem(nlndex,2,_T(ffClose)；Addltem(nIndex,4,_T()；AddItern(nlndex+,3,-itoa(pNode-nttempts,temp,10)；)voidCMyDlg:：0nButton2Stop()/停止按钮/TODO：Addyourcontrolnotificationhandlercodeherem_nCounter=m_maxPort+l；m_cBtnStop.EnableWindow(f
39、alse)；m_cBtnScan.EnableWindowO；CStatic*pStatic=(CStatic*)GetDlgltem(IDC_STATIC_STATUS)；pStatic-SetWindowText(CString)_T(当前扫描状态”)；)voidCMyDlg:：0nButton3Save()/保存按钮/TODO：AddyourcontrolnotificationhandlercodehereCFileDialog*pDlg=newCFileDialog(FALSE,.T(wtxt),NULL,OFNj)VEKYRlTEPROMPTOFN_EXPLOREROFbLLONG
40、NAMES,_T(WScannedportsfiles(*.txt),this)；ASSERT(pDlg)；if(pDlg-DoModalO=IDOK)(intnHandle,retVal;nHandle=_open(pDlg-GetPathName(),_O_BINARY_O_CREAT|_O_TRUNCL(LRDIVR)；if(nHandle=-l)(MessageBox(_T(Unabletoopenoutputfiletowrite.),_T(Error,).MB_OKIMB_ICONEXCLAMATION)；deletepDlg；return；)POSITIONpos=m_pStat
41、usList-GeLHeadPositionO；while(pos)(CStringbuffer；DATA*pNode=(DATA*)m_pStatusList-GetNext(pos)；buffer=pNode-IPAddress；buffer+=-T(,；buffer+=pNode-port；bffer+=-T(/)；if(pNode-bStatus)buffer+=_T(ffOpentf)；elsebuffer+=_T(wClosew)；buffer+=_T(rnO)；retVal=_write(nHandle,(void*)buffer.GetBuffer(buffer.GetLeng
42、thO),buffer.GetLengthO);if(retVal!=buffer.GetLengthO)(MessageBox(_T(Anerroroccuredwhilewritingrecords.,),-TCfErrorw),MB_OKMBCONEXeLAMATIoN)；deletepDlg；return；)buffer.EmptyO;)_close(nHandle)；)deletepDlg；1voidCMyDlg:：OnRadiolSingleO/TODO：Addyourcontrolnotificationhandlercodeherem_bSinglePort=true；m_cSinglePort.EnableWindowO；m_cPortFrom.EnableWindow(false)；m_cPortTo.EnableWindow(false)；m_cBtnStop.Enab1eWindow(fa1se)；1voidCMyDlg:：OnRadio2RangeO/TODO：Addyourcontrolnotificationhandlercodeherem_bSinglePort=false；m_cSingIePort.EnableWindow(false)；m_cPortFrom.EnableWindowO；m_cPortTo.EnableWindowO；m
