talk(1): Raise WARNS to 6 and fix warnings.
[dragonfly.git] / usr.bin / talk / get_addrs.c
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1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
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 University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#)get_addrs.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/talk/get_addrs.c,v 1.4 1999/08/28 01:06:11 peter Exp $
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35 */
36
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37#include <err.h>
38#include <netdb.h>
39#include <string.h>
40#include "talk.h"
41#include "talk_ctl.h"
42
43void
e2daa382 44get_addrs(char *my_machine_name __unused, char *his_machine_name)
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45{
46 struct hostent *hp;
47 struct servent *sp;
48
49 msg.pid = htonl(getpid());
50
51 hp = gethostbyname(his_machine_name);
52 if (hp == NULL)
53 errx(1, "%s: %s", his_machine_name, hstrerror(h_errno));
54 bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length);
55 if (get_iface(&his_machine_addr, &my_machine_addr) == -1)
56 err(1, "failed to find my interface address");
57 /* find the server's port */
58 sp = getservbyname("ntalk", "udp");
59 if (sp == 0)
60 errx(1, "ntalk/udp: service is not registered");
61 daemon_port = sp->s_port;
62}