1 /* $NetBSD: ctl.c,v 1.10 2012/03/20 20:34:59 matt Exp $ */
2
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 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93";
36 #endif
37 __RCSID("$NetBSD: ctl.c,v 1.10 2012/03/20 20:34:59 matt Exp $");
38 #endif /* not lint */
39
40 /*
41 * This file handles haggling with the various talk daemons to
42 * get a socket to talk to. sockt is opened and connected in
43 * the progress
44 */
45
46 #include "talk.h"
47 #include <arpa/inet.h>
48 #include "talk_ctl.h"
49
50 struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET, 0, {0}, {0} };
51 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET, 0, {0}, {0} };
52 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET, 0, {0}, {0} };
53
54 /* inet addresses of the two machines */
55 struct in_addr my_machine_addr;
56 struct in_addr his_machine_addr;
57
58 u_short daemon_port; /* port number of the talk daemon */
59
60 int ctl_sockt;
61 int sockt;
62 int invitation_waiting = 0;
63
64 CTL_MSG msg;
65
66 void
open_sockt(void)67 open_sockt(void)
68 {
69 socklen_t length;
70
71
72 (void)memset(&my_addr, 0, sizeof(my_addr));
73 my_addr.sin_family = AF_INET;
74 #ifdef BSD4_4
75 my_addr.sin_len = sizeof(my_addr);
76 #endif
77 my_addr.sin_addr = my_machine_addr;
78 my_addr.sin_port = 0;
79 sockt = socket(AF_INET, SOCK_STREAM, 0);
80 if (sockt == -1)
81 p_error("Bad socket");
82 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
83 p_error("Binding local socket");
84 length = sizeof(my_addr);
85 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
86 p_error("Bad address for socket");
87 }
88
89 /* open the ctl socket */
90 void
open_ctl(void)91 open_ctl(void)
92 {
93 socklen_t length;
94
95 (void)memset(&ctl_addr, 0, sizeof(ctl_addr));
96 ctl_addr.sin_family = AF_INET;
97 #ifdef BSD4_4
98 ctl_addr.sin_len = sizeof(my_addr);
99 #endif
100 ctl_addr.sin_port = 0;
101 ctl_addr.sin_addr = my_machine_addr;
102 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
103 if (ctl_sockt == -1)
104 p_error("Bad socket");
105 if (bind(ctl_sockt,
106 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
107 p_error("Couldn't bind to control socket");
108 length = sizeof(ctl_addr);
109 if (getsockname(ctl_sockt,
110 (struct sockaddr *)&ctl_addr, &length) == -1)
111 p_error("Bad address for ctl socket");
112 }
113
114 /* print_addr is a debug print routine */
115 void
print_addr(struct sockaddr_in addr)116 print_addr(struct sockaddr_in addr)
117 {
118 int i;
119
120 printf("addr = %s, port = %o, family = %o zero = ",
121 inet_ntoa(addr.sin_addr), addr.sin_port, addr.sin_family);
122 for (i = 0; i<8;i++)
123 printf("%o ", (int)addr.sin_zero[i]);
124 putchar('\n');
125 }
126