//------------------------------------------------------------------------------ 
// 
// Get machine ip addresses by sockaddr for sockaddr_in/sockaddr_in6. 
// 
// AUTHOR  : Yubin Lim 
// DATE    : 2004-11-05 
// EMAIL   : purewell at purewell dot biz 
// REQUIRE : MICROSOFT PLATFORM SDK(IPHLPAPI.LIB), 
//           WINDOWS XP, 
//           Visual C/C++ Compiler 
// 
//------------------------------------------------------------------------------ 
 
 
#include <cstdio> 
#include <cstdlib> 
#include <iostream> 
 
using namespace std; 
 
#include <winsock2.h> 
#include <ws2tcpip.h> 
#include <iptypes.h> 
#include <iphlpapi.h> 
 
#pragma comment(lib, "iphlpapi") 
#pragma comment(lib, "ws2_32") 
 
static bool win32_getMyIP(int nFamily) 
{ 
  DWORD dwRet; 
  PIP_ADAPTER_ADDRESSES pAdpAddrs; 
  PIP_ADAPTER_ADDRESSES pThis; 
  PIP_ADAPTER_UNICAST_ADDRESS pThisAddrs; 
  unsigned long ulBufLen = sizeof(IP_ADAPTER_ADDRESSES); 
 
  pAdpAddrs = (PIP_ADAPTER_ADDRESSES)malloc( ulBufLen ); 
  if ( !pAdpAddrs ) return false; 
 
  dwRet = GetAdaptersAddresses(nFamily, 0, NULL, pAdpAddrs, &ulBufLen); 
  if (dwRet == ERROR_BUFFER_OVERFLOW) 
  { 
    free ( pAdpAddrs ); 
    pAdpAddrs = (PIP_ADAPTER_ADDRESSES)malloc( ulBufLen ); 
 
    if ( !pAdpAddrs ) return false; 
  } 
 
  dwRet = GetAdaptersAddresses(nFamily, 0, NULL, pAdpAddrs, &ulBufLen); 
  if ( dwRet != NO_ERROR ) 
  { 
    free ( pAdpAddrs ); 
    return false; 
  } 
 
  for ( pThis = pAdpAddrs; NULL != pThis; pThis = pThis->Next) 
  { 
    fprintf(stderr," FN: %S\n", pThis->FriendlyName); 
    fprintf(stderr," DS: %S\n", pThis->Description); 
    fprintf(stderr," AN: %S\n", pThis->AdapterName); 
    for ( pThisAddrs = pThis->FirstUnicastAddress; 
          NULL != pThisAddrs; 
          pThisAddrs = pThisAddrs->Next ) 
    { 
      if ( nFamily == AF_INET ) 
      { 
        struct sockaddr_in* pAddr 
          = (struct sockaddr_in*)pThisAddrs->Address.lpSockaddr; 
 
        cerr << "  IP v4: " << inet_ntoa(pAddr->sin_addr) << endl; 
      } 
      else if ( nFamily == AF_INET6 ) 
      { 
        struct sockaddr_in6* pAddr 
          = (sockaddr_in6*)pThisAddrs->Address.lpSockaddr; 
 
        //! @todo convert binary address type to string type 
        cerr << "  IP v6" << endl; 
      } 
    }//for 
  }//for 
 
  free ( pAdpAddrs ); 
 
  return true; 
}