3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the Computer Systems
16 * Engineering Group at Lawrence Berkeley Laboratory.
17 * 4. Neither the name of the University nor of the Laboratory may be used
18 * to endorse or promote products derived from this software without
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21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char rcsid[] =
36 "@(#) $Id: findsaddr-generic.c,v 1.1 2000/11/23 20:17:12 leres Exp $ (LBL)";
39 #include <sys/param.h>
41 #include <sys/ioctl.h>
42 #include <sys/socket.h>
43 #ifdef HAVE_SYS_SOCKIO_H
44 #include <sys/sockio.h>
46 #include <sys/time.h> /* concession to AIX */
54 #include <netinet/in.h>
56 #include <arpa/inet.h>
65 #ifdef HAVE_OS_PROTO_H
69 #include "findsaddr.h"
70 #include "ifaddrlist.h"
71 #include "traceroute.h"
74 * Return the source address for the given destination address
77 findsaddr(register const struct sockaddr_in *to,
78 register struct sockaddr_in *from)
81 struct ifaddrlist *al;
82 static char errbuf[132];
84 /* Get the interface address list */
85 if ((n = ifaddrlist(&al, errbuf)) < 0)
89 return ("Can't find any network interfaces");
91 setsin(from, al->addr);
94 "%s: Warning: Multiple interfaces found; using %s @ %s\n",
95 prog, inet_ntoa(from->sin_addr), al->device);