/* net/getaddr4.c - Determine the IPv4 address of a socket
 * Copyright (C) 2001  Bruce Guenter <bruceg@em.ca>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <string.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "socket.h"

int socket_getaddr4(int sock, ipv4addr addr, unsigned short* port)
{
  struct sockaddr_in sa;
  int size;
  size = sizeof sa;
  if (getsockname(sock, (struct sockaddr*)&sa, &size) == -1) return 0;
  if (sa.sin_family != AF_INET) return 0;
  if (size != sizeof sa) return 0;
  memcpy(addr, &sa.sin_addr, sizeof addr);
  *port = ntohs(sa.sin_port);
  return 1;
}