IP Address Swapping

Environment: VC 6, NT4

This is an application used to swap the IP address. For connecting to a computer in different domain the user has to change the IP address through the Network properties, for this the user has to follow 3 to 4 steps.

In this application, the IP address of your computer will be displayed in the listbox,the user can double click it to set it as the current IP address.

  • This application can be used only in Windows NT 4.0
  • The user should have the administrator privilege

This is a trial version for swapping the IP address in your computer.
Later version will be updated frequently

Warning:This application uses the registry for manipulating the IP address.


#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

// IPswapDlg.cpp : implementation file

#include “stdafx.h”
#include “IPswap.h”
#include “IPswapDlg.h”

BOOL CIPswapDlg::OnInitDialog()
{

IPList=(CListBox*)GetDlgItem(IDC_IPADDLST);
HKEY AppKey = NULL;
LONG lRet1 = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
“SYSTEM\\CurrentControlSet\\Services\\NetBT\\Linkage”,
0,
KEY_EXECUTE|KEY_READ|KEY_ALL_ACCESS,
&AppKey);
DWORD dwS=MAXPATH;
unsigned char szPath[MAXPATH];
if(RegQueryValueEx(AppKey,”Bind”,NULL,NULL,szPath,&dwS))
{
AfxMessageBox(“Error Accessing Registry”);
}
NetAdapt=(CString)szPath;
NetAdapt.MakeReverse();
int slash=NetAdapt.Find(“\\”,0);
NetAdapt=NetAdapt.Left(slash);
NetAdapt.MakeReverse();
IPList->ResetContent();
HKEY AppPathKey = NULL;

LONG lRet = RegOpenKeyEx(
HKEY_LOCAL_MACHINE,
“SYSTEM\\CurrentControlSet\\Services\\”+
NetAdapt+”\\Parameters\\Tcpip”,
0,
KEY_EXECUTE|KEY_READ|KEY_ALL_ACCESS,
&AppPathKey);
DWORD dwSize = MAXPATH;
DWORD dwSize1 = MAXPATH;
unsigned char szAppPath[MAXPATH];
unsigned char szAppPath1[MAXPATH];
CString FullIP,SubnetMask;
if( RegQueryValueEx( AppPathKey,
“IpAddress”,
NULL,
NULL,
szAppPath,
&dwSize)!= ERROR_SUCCESS )
{
AfxMessageBox(“Error while Accessing registry”);
return 0;
}
else
{
for(int i=0;i<255;i++)
if((CString)szAppPath[i]!=””)
FullIP=FullIP+(CString)szAppPath[i];
else
{
if(FullIP.GetLength()>=8)
{
IPList->AddString(FullIP);
}

FullIP=””;
}

}

if(RegQueryValueEx( AppPathKey,
“SubnetMask”,
NULL,
NULL,
szAppPath1,
&dwSize1)!= ERROR_SUCCESS )
{
AfxMessageBox(“Error while Accessing registry”);
return 0;
}
else{

for(int i=0;i<255;i++)
if((CString)szAppPath1[i]!=””)
SubnetMask=SubnetMask+(CString)szAppPath1[i];
else
{
if(SubnetMask.GetLength()>=8)
{
subnetarray.Add(SubnetMask);
}

SubnetMask=””;
}

}

RegCloseKey(AppPathKey);

return TRUE; // return TRUE unless you set
// the focus to a control

}

void CIPswapDlg::OnDblclkIpaddlst()
{
CString teststr,teststr1;
CString iptobemoved=iparray.GetAt(0);
CString subnettobemoved=subnetarray.GetAt(0);

int curr=IPList->GetCurSel();
if(curr==0) return;
teststr=iparray.GetAt(curr);
teststr1=subnetarray.GetAt(curr);

iparray.SetAt(curr,iptobemoved);
iparray.SetAt(0,teststr);
subnetarray.SetAt(curr,subnettobemoved);
subnetarray.SetAt(0,teststr1);

IPList->ResetContent();

HKEY AppPathKey = NULL;
LONG lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
“SYSTEM\\CurrentControlSet\\Services\\”+
NetAdapt+”\\Parameters\\Tcpip”,
0,
KEY_EXECUTE|KEY_READ|KEY_ALL_ACCESS,
&AppPathKey);

DWORD dwSize = MAXPATH;
unsigned char szAppPath[MAXPATH];
CString FullIP;
if(RegQueryValueEx( AppPathKey,
“IpAddress”,
NULL,
NULL,
szAppPath,
&dwSize)!= ERROR_SUCCESS )
{
AfxMessageBox(“Error while Accessing registry”);
return;
}
int z=0;
unsigned char ii[100];
unsigned char subne[100];
CString ip,sn;

for(int p=0;p<=iparray.GetSize()-1;p++)
{
ip=iparray.GetAt(p);
for(int k=0;k<=ip.GetLength()-1;k++)
{
ii[z]=ip.GetAt(k);
z=z+1;
}
ii[z]=’\0′;
z++;
}
int x=0;
for(int q=0;q<=subnetarray.GetSize()-1;q++)
{
sn=subnetarray.GetAt(q);
for(int k=0;k<=sn.GetLength()-1;k++)
{
subne[x]=sn.GetAt(k);
x=x+1;
}
subne[x]=’\0′;
x++;
}

RegSetValueEx(AppPathKey,”IpAddress”,0,REG_MULTI_SZ,ii,z);
RegSetValueEx(AppPathKey,”SubnetMask”,0,REG_MULTI_SZ,subne,x);
RegCloseKey(AppPathKey);
for(int j=0;j<=iparray.GetSize()-1;j++)
{
IPList->AddString(iparray.GetAt(j));
}

MessageBox(“Successfully swaped”);
}

Downloads

Download demo project – 9Kb

Download source – 22Kb

More by Author

Must Read