talk(1): Raise WARNS to 6 and fix warnings.
[dragonfly.git] / usr.bin / talk / ctl.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 * @(#)ctl.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/talk/ctl.c,v 1.6 1999/08/28 01:06:10 peter Exp $
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35 */
36
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37/*
38 * This file handles haggling with the various talk daemons to
39 * get a socket to talk to. sockt is opened and connected in
40 * the progress
41 */
42
43#include <sys/types.h>
44#include <sys/socket.h>
45#include "talk.h"
46
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47struct sockaddr_in daemon_addr = { .sin_len = sizeof(daemon_addr), .sin_family = AF_INET };
48struct sockaddr_in ctl_addr = { .sin_len = sizeof(ctl_addr), .sin_family = AF_INET };
49struct sockaddr_in my_addr = { .sin_len = sizeof(my_addr), .sin_family = AF_INET };
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50
51 /* inet addresses of the two machines */
52struct in_addr my_machine_addr;
53struct in_addr his_machine_addr;
54
55u_short daemon_port; /* port number of the talk daemon */
56
57int ctl_sockt;
58int sockt;
59int invitation_waiting = 0;
60
61CTL_MSG msg;
62
63void
1d1731fa 64open_sockt(void)
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65{
66 int length;
67
68 my_addr.sin_addr = my_machine_addr;
69 my_addr.sin_port = 0;
70 sockt = socket(AF_INET, SOCK_STREAM, 0);
71 if (sockt <= 0)
72 p_error("Bad socket");
73 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
74 p_error("Binding local socket");
75 length = sizeof(my_addr);
76 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
77 p_error("Bad address for socket");
78}
79
80/* open the ctl socket */
81void
1d1731fa 82open_ctl(void)
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83{
84 int length;
85
86 ctl_addr.sin_port = 0;
87 ctl_addr.sin_addr = my_machine_addr;
88 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
89 if (ctl_sockt <= 0)
90 p_error("Bad socket");
91 if (bind(ctl_sockt,
92 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
93 p_error("Couldn't bind to control socket");
94 length = sizeof(ctl_addr);
95 if (getsockname(ctl_sockt,
96 (struct sockaddr *)&ctl_addr, &length) == -1)
97 p_error("Bad address for ctl socket");
98}
99
100/* print_addr is a debug print routine */
101void
1d1731fa 102print_addr(struct sockaddr_in addr)
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103{
104 int i;
105
106 printf("addr = %lx, port = %o, family = %o zero = ",
107 (u_long)addr.sin_addr.s_addr, addr.sin_port, addr.sin_family);
108 for (i = 0; i<8;i++)
109 printf("%o ", (int)addr.sin_zero[i]);
110 putchar('\n');
111}