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/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Curl.
*
* The Initial Developer of the Original Code is Daniel Stenberg.
*
* Portions created by the Initial Developer are Copyright (C) 1998.
* All Rights Reserved.
*
* ------------------------------------------------------------
* Main author:
* - Daniel Stenberg <Daniel.Stenberg@haxx.nu>
*
* http://curl.haxx.nu
*
* $Source$
* $Revision$
* $Date$
* $Author$
* $State$
* $Locker$
*
* ------------------------------------------------------------
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "setup.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if ! defined(WIN32) && ! defined(__BEOS__)
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <netinet/in.h>
#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_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#ifdef HAVE_INET_NTOA_R
#include "inet_ntoa_r.h"
#endif
#define SYS_ERROR -1
char *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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