1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef lint
static const char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93";
#endif
/*
* This file handles haggling with the various talk daemons to
* get a socket to talk to. sockt is opened and connected in
* the progress
*/
#include <sys/types.h>
#include <sys/socket.h>
#include "talk.h"
struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
/* inet addresses of the two machines */
struct in_addr my_machine_addr;
struct in_addr his_machine_addr;
u_short daemon_port; /* port number of the talk daemon */
int ctl_sockt;
int sockt;
int invitation_waiting = 0;
CTL_MSG msg;
void
open_sockt()
{
int length;
my_addr.sin_addr = my_machine_addr;
my_addr.sin_port = 0;
sockt = socket(AF_INET, SOCK_STREAM, 0);
if (sockt <= 0)
p_error("Bad socket");
if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
p_error("Binding local socket");
length = sizeof(my_addr);
if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
p_error("Bad address for socket");
}
/* open the ctl socket */
void
open_ctl()
{
int length;
ctl_addr.sin_port = 0;
ctl_addr.sin_addr = my_machine_addr;
ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
if (ctl_sockt <= 0)
p_error("Bad socket");
if (bind(ctl_sockt,
(struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
p_error("Couldn't bind to control socket");
length = sizeof(ctl_addr);
if (getsockname(ctl_sockt,
(struct sockaddr *)&ctl_addr, &length) == -1)
p_error("Bad address for ctl socket");
}
/* print_addr is a debug print routine */
void
print_addr(addr)
struct sockaddr_in addr;
{
int i;
printf("addr = %lx, port = %o, family = %o zero = ",
(u_long)addr.sin_addr.s_addr, addr.sin_port, addr.sin_family);
for (i = 0; i<8;i++)
printf("%o ", (int)addr.sin_zero[i]);
putchar('\n');
}
|
