dlgipaddresswithsubnet.cpp

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// DlgIpAddressWithSubnet.cpp : implementation file
//

#include "stdafx.h"
#include "warmmcsnapin.h"
#include "DlgIpAddressWithSubnet.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDlgIpAddressWithSubnet dialog


CDlgIpAddressWithSubnet::CDlgIpAddressWithSubnet(CWnd* pParent /*=NULL*/)
	: CDialog(CDlgIpAddressWithSubnet::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDlgIpAddressWithSubnet)
	m_Subnet = 0;
	//}}AFX_DATA_INIT

    mIpAddress.s_addr = 0;
    mIpMask.s_addr = 0;
}


void CDlgIpAddressWithSubnet::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDlgIpAddressWithSubnet)
	DDX_Control(pDX, IDC_IPADDRESS1, m_ctlIpAddress);
	DDX_CBIndex(pDX, IDC_SUBNET, m_Subnet);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CDlgIpAddressWithSubnet, CDialog)
	//{{AFX_MSG_MAP(CDlgIpAddressWithSubnet)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDlgIpAddressWithSubnet message handlers

void CDlgIpAddressWithSubnet::OnOK() 
{
    UpdateData();

    DWORD ip_addr = 0;
    m_ctlIpAddress.GetAddress(ip_addr);
    mIpAddress.s_addr = ntohl(ip_addr);

    if (0 != m_Subnet)
        mIpMask.s_addr = ntohl(0xffffffff << (32 - m_Subnet));
    else
        mIpMask.s_addr = 0xffffffff;
	
	CDialog::OnOK();
}

BOOL CDlgIpAddressWithSubnet::OnInitDialog() 
{
    // Initialize subnet index
    if (mIpMask.s_addr == 0xffffffff)
        m_Subnet = 0;
    else 
    {
        struct in_addr test_addr;
        test_addr.s_addr = 0;

        for(m_Subnet = 1;; m_Subnet++)
        {
            test_addr.s_addr = ntohl(0xffffffff << (32 - m_Subnet));

            if (test_addr.s_addr == mIpMask.s_addr)
                break;

            if (m_Subnet > 30)
            {
                m_Subnet = 0;
                break; // Invalid value
            }
        }
    }

    CDialog::OnInitDialog();

    m_ctlIpAddress.SetAddress(htonl(mIpAddress.s_addr));
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}