webfinderdlg.cpp

Visual C++自动查询和智能代理程序设计书籍源码-WebFinder1

// WebFinderDlg.cpp : implementation file
//

#include "stdafx.h"
#include "WebFinder.h"
#include "WebFinderDlg.h"
#include "CRobot.h"
#include "CRobotInternet.h"

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

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

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()

/////////////////////////////////////////////////////////////////////////////
// CWebFinderDlg dialog

CWebFinderDlg::CWebFinderDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWebFinderDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWebFinderDlg)
	m_startAddr = _T("");
	m_endAddr = _T("");
	m_status = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CWebFinderDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWebFinderDlg)
	DDX_Control(pDX, IDC_RESULTS, m_results_ctl);
	DDX_Text(pDX, IDC_START_ADDR, m_startAddr);
	DDX_Text(pDX, IDC_END_ADDR, m_endAddr);
	DDX_Text(pDX, IDC_STATUS, m_status);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWebFinderDlg, CDialog)
	//{{AFX_MSG_MAP(CWebFinderDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWebFinderDlg message handlers

BOOL CWebFinderDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CWebFinderDlg::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 CWebFinderDlg::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 CWebFinderDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

// ******************
// *                *
// *  ValidAddress  *
// *                *
// ******************
// Description:	Returns true if the contents of sAddress appear
//				to beas a valid numbered TCP/IP address in the form
//				n1.n2.n3.n4. Returns false if the address is invalid.
//
//				If true is returned, n1 through n4 are set to
//				the values in sAddress

BOOL ValidAddress(CString sAddress,
				  UINT& n1, 
				  UINT& n2, 
				  UINT& n3, 
				  UINT& n4)
{
	int nPos;
	CString sTemp = sAddress;
	
	n1 = atoi(sTemp);

	nPos = sTemp.Find(".");
	if (nPos == -1) return false;
	sTemp = sTemp.Mid(nPos + 1);

	n2 = atoi(sTemp);

	nPos = sTemp.Find(".");
	if (nPos == -1) return false;
	sTemp = sTemp.Mid(nPos + 1);
	
	n3 = atoi(sTemp);

	nPos = sTemp.Find(".");
	if (nPos == -1) return false;
	sTemp = sTemp.Mid(nPos + 1);
	
	n4 = atoi(sTemp);

	if (n1 < 0 || n1 > 255) return false;
	if (n2 < 0 || n2 > 255) return false;
	if (n3 < 0 || n3 > 255) return false;
	if (n4 < 0 || n4 > 255) return false;

	return true;
}

void CWebFinderDlg::OnOK() 
{
	UINT nStartAddr1, nStartAddr2, nStartAddr3, nStartAddr4;
	UINT nEndAddr1, nEndAddr2, nEndAddr3, nEndAddr4;

	UpdateData(true);

	if (!ValidAddress(m_startAddr, 
					  nStartAddr1,
					  nStartAddr2,
					  nStartAddr3,
					  nStartAddr4))
	{
		CString sInvalidAddr = 
			"The starting address is not formatted properly.\n\n";
		sInvalidAddr += 
			"An IP address of the form n.n.n.n must be entered.";
		MessageBox(sInvalidAddr,
		           "Invalid Starting Address",
				   MB_ICONEXCLAMATION);
		GetDlgItem(IDC_START_ADDR)->SetFocus();
		return;
	} // End if

	if (!ValidAddress(m_endAddr,
		              nEndAddr1,
					  nEndAddr2,
					  nEndAddr3,
					  nEndAddr4))
	{
		CString sInvalidAddr =
			"The ending address is not formatted properly.\n\n";
		sInvalidAddr +=
			"An IP address of the form n.n.n.n must be entered.";
		MessageBox(sInvalidAddr,
			       "Invalid Starting Address",
				   MB_ICONEXCLAMATION);
		GetDlgItem(IDC_END_ADDR)->SetFocus();
		return;
	} // End if
	
	// Both starting and ending address are valid
	// Ensure that ending address is greater than starting address

	unsigned long nStartVal = (nStartAddr1 << 24) 
							  + (nStartAddr2 << 16) 
							  + (nStartAddr3 << 8) 
							  + nStartAddr4;
	unsigned long nEndVal = (nEndAddr1 << 24) 
							+ (nEndAddr2 << 16)
							+ (nEndAddr3 << 8)
							+ nEndAddr4;

	if (nStartVal > nEndVal)
	{
		CString sInvalidAddr =
			"The starting address exceeds the ending address.";
		MessageBox(sInvalidAddr, "Range Error", MB_ICONEXCLAMATION);
		GetDlgItem(IDC_START_ADDR)->SetFocus();
		return;
	} // End if

	// Addresses are valid and in the proper order
	
	CWaitCursor wc;
	
	CRobotInternet internet;

	m_status = "Running";
	GetDlgItem(IDOK)->EnableWindow(false);
	m_results_ctl.ResetContent();
	UpdateData(false);

	UINT n1 = nStartAddr1;
	UINT n2 = nStartAddr2;
	UINT n3 = nStartAddr3;
	UINT n4 = nStartAddr4;
	CString sURL, sHeader;
	int nResult;
	CString sErrMsg;
	BOOL bContinue = true;
	CString sServer;
	
	while (bContinue) 
	{
		sURL.Format("http://%d.%d.%d.%d", n1, n2, n3, n4);
		m_status.Format("Trying %d.%d.%d.%d", n1, n2, n3, n4);
		UpdateData(false);

		if (internet.httpHeader(sURL, sHeader, nResult, sErrMsg))
		{
			m_results_ctl.AddString(sURL + " is a web server");
			UpdateData(false);
		} // End if

		if (n1 == nEndAddr1
			&& n2 == nEndAddr2 
			&& n3 == nEndAddr3 
			&& n4 == nEndAddr4)
		{	/* finished */
			bContinue = false;
		} // End if
		else
		{	/* advance to next address */
			n4++;
			if (n4 > 255)
			{
				n4 = 0;
				n3++;
				if (n3 > 255)
				{
					n3 = 0;
					n2++;
					if (n2 > 255)
					{
						n2 = 0;
						n1++;
					} // End if n2
				} // End if n3
			} // End if n4
		} // End else
	}

	m_status = "Finished";
	GetDlgItem(IDOK)->EnableWindow(true);
	UpdateData(false);
}