124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*****************************************************************************
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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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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Curl.
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*
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* The Initial Developer of the Original Code is Daniel Stenberg.
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*
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* Portions created by the Initial Developer are Copyright (C) 1998.
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* All Rights Reserved.
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*
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* ------------------------------------------------------------
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* Main author:
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* - Daniel Stenberg <Daniel.Stenberg@haxx.nu>
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*
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* http://curl.haxx.nu
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*
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* $Source$
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* $Revision$
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* $Date$
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* $Author$
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* $State$
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* $Locker$
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*
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* ------------------------------------------------------------
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****************************************************************************/
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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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#include "setup.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__)
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#include <sys/socket.h>
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#include <netinet/in.h>
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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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#include <netinet/in.h>
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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_TIME_H
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#include <sys/time.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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#ifdef HAVE_INET_NTOA_R
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#include "inet_ntoa_r.h"
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#endif
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#define SYS_ERROR -1
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char *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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if (SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req, sizeof(req))) {
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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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close(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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