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/*
35 * This file handles haggling with the various talk daemons to
36 * get a socket to talk to. sockt is opened and connected in
37 * the progress
38 */
39
40#include <sys/types.h>
41#include <sys/socket.h>
42
43#include <string.h>
44
45#include "talk.h"
46#include "talk_ctl.h"
47
48struct	sockaddr_in daemon_addr = { .sin_len = sizeof(daemon_addr), .sin_family = AF_INET };
49struct	sockaddr_in ctl_addr = { .sin_len = sizeof(ctl_addr), .sin_family = AF_INET };
50struct	sockaddr_in my_addr = { .sin_len = sizeof(my_addr), .sin_family = AF_INET };
51
52	/* inet addresses of the two machines */
53struct	in_addr my_machine_addr;
54struct	in_addr his_machine_addr;
55
56u_short daemon_port;	/* port number of the talk daemon */
57
58int	ctl_sockt;
59int	sockt;
60int	invitation_waiting = 0;
61
62CTL_MSG msg;
63
64void
65open_sockt(void)
66{
67	socklen_t length;
68
69	(void)memset(&my_addr, 0, sizeof(my_addr));
70	my_addr.sin_family = AF_INET;
71	my_addr.sin_len = sizeof(my_addr);
72	my_addr.sin_addr = my_machine_addr;
73	my_addr.sin_port = 0;
74	sockt = socket(AF_INET, SOCK_STREAM, 0);
75	if (sockt == -1)
76		p_error("Bad socket");
77	if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
78		p_error("Binding local socket");
79	length = sizeof(my_addr);
80	if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
81		p_error("Bad address for socket");
82}
83
84/* open the ctl socket */
85void
86open_ctl(void)
87{
88	socklen_t length;
89
90	(void)memset(&ctl_addr, 0, sizeof(ctl_addr));
91	ctl_addr.sin_family = AF_INET;
92	ctl_addr.sin_len = sizeof(my_addr);
93	ctl_addr.sin_port = 0;
94	ctl_addr.sin_addr = my_machine_addr;
95	ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
96	if (ctl_sockt == -1)
97		p_error("Bad socket");
98	if (bind(ctl_sockt,
99	    (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
100		p_error("Couldn't bind to control socket");
101	length = sizeof(ctl_addr);
102	if (getsockname(ctl_sockt,
103	    (struct sockaddr *)&ctl_addr, &length) == -1)
104		p_error("Bad address for ctl socket");
105}
106
107/* print_addr is a debug print routine */
108void
109print_addr(struct sockaddr_in addr)
110{
111	int i;
112
113	printf("addr = %lx, port = %o, family = %o zero = ",
114		(u_long)addr.sin_addr.s_addr, addr.sin_port, addr.sin_family);
115	for (i = 0; i<8;i++)
116	printf("%o ", (int)addr.sin_zero[i]);
117	putchar('\n');
118}
119