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/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2000, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* In order to be useful for every potential user, curl and libcurl are
* dual-licensed under the MPL and the MIT/X-derivate licenses.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the MPL or the MIT/X-derivate
* licenses. You may pick one of these licenses.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
*****************************************************************************/
#include "setup.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if ! defined(WIN32) && ! defined(__BEOS__) && !defined(__CYGWIN32__)
#ifdef NEED_REENTRANT
#define _REENTRANT
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
/* This must be before net/if.h for AIX 3.2 to enjoy life */
#include <sys/time.h>
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
#endif
#include <sys/ioctl.h>
/* -- if2ip() -- */
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
#define SYS_ERROR -1
char *Curl_if2ip(char *interface, char *buf, int buf_size)
{
int dummy;
char *ip=NULL;
if(!interface)
return NULL;
dummy = socket(AF_INET, SOCK_STREAM, 0);
if (SYS_ERROR == dummy) {
return NULL;
}
else {
struct ifreq req;
memset(&req, 0, sizeof(req));
strcpy(req.ifr_name, interface);
req.ifr_addr.sa_family = AF_INET;
if (SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req, sizeof(req))) {
return NULL;
}
else {
struct in_addr in;
struct sockaddr_in *s = (struct sockaddr_in *)&req.ifr_dstaddr;
memcpy(&in, &(s->sin_addr.s_addr), sizeof(in));
#if defined(HAVE_INET_NTOA_R)
ip = inet_ntoa_r(in,buf,buf_size);
#else
ip = strncpy(buf,inet_ntoa(in),buf_size);
ip[buf_size - 1] = 0;
#endif
}
close(dummy);
}
return ip;
}
/* -- end of if2ip() -- */
#else
#define if2ip(x) NULL
#endif
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