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31c4d32d WJ |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * 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. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)ctl.c 5.7 (Berkeley) 3/1/91"; | |
36 | #endif /* not lint */ | |
37 | ||
38 | /* | |
39 | * This file handles haggling with the various talk daemons to | |
40 | * get a socket to talk to. sockt is opened and connected in | |
41 | * the progress | |
42 | */ | |
43 | ||
44 | #include <sys/types.h> | |
45 | #include <sys/socket.h> | |
46 | #include <protocols/talkd.h> | |
47 | #include <netinet/in.h> | |
48 | #include "talk.h" | |
49 | #include "talk_ctl.h" | |
50 | ||
51 | struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; | |
52 | struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; | |
53 | struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; | |
54 | ||
55 | /* inet addresses of the two machines */ | |
56 | struct in_addr my_machine_addr; | |
57 | struct in_addr his_machine_addr; | |
58 | ||
59 | u_short daemon_port; /* port number of the talk daemon */ | |
60 | ||
61 | int ctl_sockt; | |
62 | int sockt; | |
63 | int invitation_waiting = 0; | |
64 | ||
65 | CTL_MSG msg; | |
66 | ||
67 | open_sockt() | |
68 | { | |
69 | int length; | |
70 | ||
71 | my_addr.sin_addr = my_machine_addr; | |
72 | my_addr.sin_port = 0; | |
73 | sockt = socket(AF_INET, SOCK_STREAM, 0); | |
74 | if (sockt <= 0) | |
75 | p_error("Bad socket"); | |
76 | if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) | |
77 | p_error("Binding local socket"); | |
78 | length = sizeof(my_addr); | |
79 | if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) | |
80 | p_error("Bad address for socket"); | |
81 | } | |
82 | ||
83 | /* open the ctl socket */ | |
84 | open_ctl() | |
85 | { | |
86 | int length; | |
87 | ||
88 | ctl_addr.sin_port = 0; | |
89 | ctl_addr.sin_addr = my_machine_addr; | |
90 | ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); | |
91 | if (ctl_sockt <= 0) | |
92 | p_error("Bad socket"); | |
93 | if (bind(ctl_sockt, | |
94 | (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) | |
95 | p_error("Couldn't bind to control socket"); | |
96 | length = sizeof(ctl_addr); | |
97 | if (getsockname(ctl_sockt, | |
98 | (struct sockaddr *)&ctl_addr, &length) == -1) | |
99 | p_error("Bad address for ctl socket"); | |
100 | } | |
101 | ||
102 | /* print_addr is a debug print routine */ | |
103 | print_addr(addr) | |
104 | struct sockaddr_in addr; | |
105 | { | |
106 | int i; | |
107 | ||
108 | printf("addr = %x, port = %o, family = %o zero = ", | |
109 | addr.sin_addr, addr.sin_port, addr.sin_family); | |
110 | for (i = 0; i<8;i++) | |
111 | printf("%o ", (int)addr.sin_zero[i]); | |
112 | putchar('\n'); | |
113 | } |