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C - C++ / [C++] Get External/WAN IP (win32)
« on: December 06, 2011, 01:17:36 PM »
IPuR.h
Usage :
Function GetWanIP() takes two parameters :
1st param : pointer to char array
2nd param : length of char array
Example Code :
Code: [Select]
//////////////////////////////////////
// Author : john_engit
//////////////////////////////////////
#include <windows.h>
#include <wininet.h>
#pragma comment(lib,"wininet.lib")
#pragma comment(lib,"ws2_32.lib")
namespace IPuR
{
//download file from WWW in a buffer
bool WWWFileBuffer(char *host,char *path,char *outBuffer,int outBufferSize)
{
bool retval = false;
LPTSTR AcceptTypes[2] = {TEXT("*/*"), NULL};
DWORD dwSize = outBufferSize-1,dwFlags = INTERNET_FLAG_RELOAD | INTERNET_FLAG_NO_CACHE_WRITE;
HINTERNET opn= NULL,con = NULL,req = NULL;
opn = InternetOpen(TEXT("Evilzone.org"),INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0);
if(!opn)
return retval;
con = InternetConnect(opn,host,INTERNET_DEFAULT_HTTP_PORT,NULL,NULL,INTERNET_SERVICE_HTTP,0,0);
if(!con)
return retval;
req = HttpOpenRequest(con,TEXT("GET"),path,HTTP_VERSION,NULL,(LPCTSTR*)AcceptTypes,dwFlags, 0);
if(!req)
return retval;
if(HttpSendRequest(req, NULL, 0, NULL, 0))
{
DWORD statCodeLen = sizeof(DWORD);
DWORD statCode;
if(HttpQueryInfo(req,
HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER,
&statCode,&statCodeLen,NULL))
{
if(statCode==200 && InternetReadFile(req, (LPVOID)outBuffer, outBufferSize-1, &dwSize))
{
retval = TRUE;
}
}
}
InternetCloseHandle(req);
InternetCloseHandle(con);
InternetCloseHandle(opn);
return retval;
}
//Get your External/WAN IP
BOOL GetWanIP(char *ip,int size)
{
bool retval = false;
char *tmpip = new char[150];
memset(ip,0,size);
//www.whatismyip.org
if(!retval)
{
memset(tmpip,0,150);
WWWFileBuffer("www.whatismyip.org",NULL,tmpip,150);
if(strlen(tmpip)>0 && inet_addr(tmpip) != INADDR_NONE)
{
retval = true;
}
}
//automation.whatismyip.com/n09230945.asp
if(!retval)
{
memset(tmpip,0,150);
WWWFileBuffer("automation.whatismyip.com","/n09230945.asp",tmpip,150);
if(strlen(tmpip)>0 && inet_addr(tmpip) != INADDR_NONE)
{
retval = true;
}
}
//www.showmyip.com/simple
if(!retval)
{
memset(tmpip,0,150);
WWWFileBuffer("www.showmyip.com","/simple",tmpip,150);
if(strlen(tmpip)>0 && inet_addr(tmpip) != INADDR_NONE)
{
retval = true;
}
}
//myip.dnsomatic.com
if(!retval)
{
memset(tmpip,0,150);
WWWFileBuffer("myip.dnsomatic.com",NULL,tmpip,150);
if(strlen(tmpip)>0 && inet_addr(tmpip) != INADDR_NONE)
{
retval = true;
}
}
//checkip.dyndns.org
if(!retval)
{
memset(tmpip,0,150);
WWWFileBuffer("checkip.dyndns.org",NULL,tmpip,150);
if(strlen(tmpip)>0)
{
strcpy_s(tmpip,150,(strstr(tmpip,":")+2));
int res = (int)(strstr(tmpip,"<") - tmpip);
tmpip[res]='\0';
if(inet_addr(tmpip) != INADDR_NONE)
{
retval = true;
}
else
retval = false;
}
}
if(retval)
strcpy_s(ip,size,tmpip);
delete[] tmpip;
return retval;
}
}
Usage :
Code: [Select]
char ip[16];
IPuR::GetWanIP(ip,16);
Function GetWanIP() takes two parameters :
1st param : pointer to char array
2nd param : length of char array
Example Code :
Code: [Select]
#include <iostream>
#include "IPuR.h"
using namespace std;
int main(int argc,char **argv)
{
char ip[16];
if(IPuR::GetWanIP(ip,16))
cout << "WAN IP : " << ip <<endl;
else
cout << "Error Retreiving IP.";
return EXIT_SUCCESS;
}
