1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32
33
34#include <err.h>
35#include <netdb.h>
36#include <string.h>
37#include <unistd.h>
38
39#include "talk.h"
40#include "talk_ctl.h"
41
42void
43get_addrs(const char *my_machine_name __unused, const char *his_machine_name)
44{
45	struct hostent *hp;
46	struct servent *sp;
47
48	msg.pid = htonl(getpid());
49
50	hp = gethostbyname(his_machine_name);
51	if (hp == NULL)
52		errx(1, "%s: %s", his_machine_name, hstrerror(h_errno));
53	bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length);
54	if (get_iface(&his_machine_addr, &my_machine_addr) == -1)
55		err(1, "failed to find my interface address");
56	/* find the server's port */
57	sp = getservbyname("ntalk", "udp");
58	if (sp == NULL)
59		errx(1, "ntalk/udp: service is not registered");
60	daemon_port = sp->s_port;
61}
62