testipdlg.cpp

包括功能：IP地址的整形与字符串之间相互转换

// TestIPDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TestIP.h"
#include "TestIPDlg.h"
#include <winsock2.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()

/////////////////////////////////////////////////////////////////////////////
// CTestIPDlg dialog

CTestIPDlg::CTestIPDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTestIPDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTestIPDlg)
	m_nIPNum = 0;
	m_sIPString = _T("");
	m_nShortHost = 0;
	m_nShortNetwork = 0;
	m_nIntHost = 0;
	m_nIntNetwork = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CTestIPDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTestIPDlg)
	DDX_Text(pDX, IDC_EDT_NUM, m_nIPNum);
	DDX_Text(pDX, IDC_EDT_IPSTR, m_sIPString);
	DDX_Text(pDX, IDC_EDT_SHORT_HOST, m_nShortHost);
	DDX_Text(pDX, IDC_EDT_SHORT_NETWORK, m_nShortNetwork);
	DDX_Text(pDX, IDC_EDT_INT_HOST, m_nIntHost);
	DDX_Text(pDX, IDC_EDT_INT_NETWORK, m_nIntNetwork);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTestIPDlg, CDialog)
	//{{AFX_MSG_MAP(CTestIPDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_H2N, OnBtnH2n)
	ON_BN_CLICKED(IDC_BTN_N2H, OnBtnN2h)
	ON_BN_CLICKED(IDC_BTN_INT_H2N, OnBtnIntH2n)
	ON_BN_CLICKED(IDC_BTN_INT_N2H, OnBtnIntN2h)
	ON_BN_CLICKED(IDC_BTN_IP_INT2STR, OnBtnIpInt2str)
	ON_BN_CLICKED(IDC_BTN_IP_INT2STR2, OnBtnIpInt2str2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestIPDlg message handlers

BOOL CTestIPDlg::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 CTestIPDlg::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 CTestIPDlg::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 CTestIPDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void IPulong2string(unsigned long ulIP, char outBuf[16])
{
    //memset(outbuf, 16);
    unsigned short add1, add2, add3, add4;
    
    add1 = (unsigned short)( ulIP      & 255);
    add2 = (unsigned short)((ulIP>>8)  & 255);
    add3 = (unsigned short)((ulIP>>16) & 255);
    add4 = (unsigned short)((ulIP>>24) & 255);
    
    sprintf(outBuf, "%d.%d.%d.%d", add4, add3, add2, add1);
}

bool CheckIPStr(const char *pIP)
{
    // IP地址长度最大为15，最小为7
    if (pIP == NULL || strlen(pIP) > 15 || strlen(pIP) < 7)
    {
        return false;
    }
    
    char a;
    int dot = 0; // Dot count
    int a3, a2, a1, a0, i = 0;
    char str[16];
    
    strcpy(str, pIP);
    a3 = a2 = a1 = a0 = -1;
    
    while (a = str[i++])
    {
        if ((a == ' ') || (a == '.') || ((a >= '0') && (a <= '9')))
        {
            if (a == '.')
                ++dot;
        }
        else
        {
            return false;
        }
    }
    
    if (dot != 3)
    {
        return false;
    }
    else
    {
        sscanf(str, "%d.%d.%d.%d", &a3, &a2, &a1, &a0);
        
        if ((a0 > 255) || (a1 > 255) || (a2 > 255) || (a3 > 255))
        {
            return false;
        }
        if ((a0 < 0) || (a1 < 0) || (a2 < 0) || (a3 < 0))
        {
            return false;
        }
    }
    
    return true;
}

unsigned long IPstring2ulong(const char *pIP)
{
    if (!CheckIPStr(pIP))
    {
        return 0;
    }
    
    int a3, a2, a1, a0;
    unsigned long dwReturn = 0;
    
    sscanf(pIP, "%d.%d.%d.%d", &a3, &a2, &a1, &a0);
    
    dwReturn += a3 << 24;
    dwReturn += a2 << 16;
    dwReturn += a1 << 8;
    dwReturn += a0;
    
    return dwReturn;
}    

void CTestIPDlg::OnOK() 
{
	// TODO: Add extra validation here
	
     //CDialog::OnOK();
}

void CTestIPDlg::OnBtnH2n() 
{
	UpdateData(TRUE);
	
    if (m_nShortHost != 0)
    {
        unsigned short nHost = m_nShortHost;
        unsigned short nNetwork = htons(nHost);

        m_nShortNetwork = nNetwork;
        UpdateData(FALSE);
    }
}

void CTestIPDlg::OnBtnN2h() 
{
    UpdateData(TRUE);
    
    if (m_nShortNetwork != 0)
    {
        unsigned short nNetwork = m_nShortNetwork;
        unsigned short nHost = ntohs(nNetwork);
        
        m_nShortHost = nHost;
        UpdateData(FALSE);
    }
}

void CTestIPDlg::OnBtnIntH2n() 
{
	UpdateData(TRUE);

    if (m_nIntHost != 0)
    {
        m_nIntNetwork = htonl(m_nIntHost);

        UpdateData(FALSE);
    }
}

void CTestIPDlg::OnBtnIntN2h() 
{
    UpdateData(TRUE);

    if (m_nIntNetwork != 0)
    {
        m_nIntHost = ntohl(m_nIntNetwork);

        UpdateData(FALSE);
    }
}

void CTestIPDlg::OnBtnIpInt2str() 
{
    UpdateData(TRUE);

    if (m_nIPNum != 0)
    {
        char sBuf[16] = {0};
        
        IPulong2string(m_nIPNum, sBuf);
        m_sIPString = sBuf;
        
        UpdateData(FALSE);
    }
}

void CTestIPDlg::OnBtnIpInt2str2() 
{
	UpdateData(TRUE);

    m_sIPString.TrimLeft();
    m_sIPString.TrimRight();
    
    if (m_sIPString.GetLength() > 0)
    {
        m_nIPNum = IPstring2ulong(m_sIPString);

        UpdateData(FALSE);
    }
}