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128 lines
3 KiB
C
128 lines
3 KiB
C
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id: if2ip.c,v 1.24 2003/02/28 13:11:10 bagder Exp $
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***************************************************************************/
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#include "setup.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if ! defined(WIN32) && ! defined(__BEOS__) && !defined(__CYGWIN32__) && \
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! defined(__riscos__)
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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/* This must be before net/if.h for AIX 3.2 to enjoy life */
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#include <sys/time.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#include <sys/ioctl.h>
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/* -- if2ip() -- */
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_SYS_SOCKIO_H
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#include <sys/sockio.h>
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#endif
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#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
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#include "inet_ntoa_r.h"
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#endif
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#ifdef VMS
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#define IOCTL_3_ARGS
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#include <inet.h>
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#endif
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/* The last #include file should be: */
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#ifdef MALLOCDEBUG
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#include "memdebug.h"
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#endif
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#define SYS_ERROR -1
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char *Curl_if2ip(char *interface, char *buf, int buf_size)
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{
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int dummy;
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char *ip=NULL;
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if(!interface)
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return NULL;
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dummy = socket(AF_INET, SOCK_STREAM, 0);
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if (SYS_ERROR == dummy) {
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return NULL;
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}
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else {
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struct ifreq req;
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memset(&req, 0, sizeof(req));
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strcpy(req.ifr_name, interface);
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req.ifr_addr.sa_family = AF_INET;
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#ifdef IOCTL_3_ARGS
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if (SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req)) {
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#else
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if (SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req, sizeof(req))) {
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#endif
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sclose(dummy);
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return NULL;
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}
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else {
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struct in_addr in;
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struct sockaddr_in *s = (struct sockaddr_in *)&req.ifr_dstaddr;
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memcpy(&in, &(s->sin_addr.s_addr), sizeof(in));
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#if defined(HAVE_INET_NTOA_R)
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ip = inet_ntoa_r(in,buf,buf_size);
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#else
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ip = strncpy(buf,inet_ntoa(in),buf_size);
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ip[buf_size - 1] = 0;
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#endif
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}
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sclose(dummy);
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}
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return ip;
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}
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/* -- end of if2ip() -- */
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#else
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#define if2ip(x) NULL
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#endif
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