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/* net/getaddr4.c - Determine the IPv4 address of a socket
* Copyright (C) 2001,2005 Bruce Guenter <bruce@untroubled.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "socket.h"
/** Determine the IPv4 address of a socket. */
int socket_getaddr4(int sock, ipv4addr* addr, ipv4port* port)
{
struct sockaddr_in sa;
socklen_t 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->addr, &sa.sin_addr, 4);
*port = ntohs(sa.sin_port);
return 1;
}
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