2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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30 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 static const char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93";
39 * This file handles haggling with the various talk daemons to
40 * get a socket to talk to. sockt is opened and connected in
44 #include <sys/types.h>
45 #include <sys/socket.h>
51 struct sockaddr_in daemon_addr = { .sin_len = sizeof(daemon_addr), .sin_family = AF_INET };
52 struct sockaddr_in ctl_addr = { .sin_len = sizeof(ctl_addr), .sin_family = AF_INET };
53 struct sockaddr_in my_addr = { .sin_len = sizeof(my_addr), .sin_family = AF_INET };
55 /* inet addresses of the two machines */
56 struct in_addr my_machine_addr;
57 struct in_addr his_machine_addr;
59 u_short daemon_port; /* port number of the talk daemon */
63 int invitation_waiting = 0;
72 (void)memset(&my_addr, 0, sizeof(my_addr));
73 my_addr.sin_family = AF_INET;
74 my_addr.sin_len = sizeof(my_addr);
75 my_addr.sin_addr = my_machine_addr;
77 sockt = socket(AF_INET, SOCK_STREAM, 0);
79 p_error("Bad socket");
80 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
81 p_error("Binding local socket");
82 length = sizeof(my_addr);
83 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
84 p_error("Bad address for socket");
87 /* open the ctl socket */
93 (void)memset(&ctl_addr, 0, sizeof(ctl_addr));
94 ctl_addr.sin_family = AF_INET;
95 ctl_addr.sin_len = sizeof(my_addr);
96 ctl_addr.sin_port = 0;
97 ctl_addr.sin_addr = my_machine_addr;
98 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
100 p_error("Bad socket");
102 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
103 p_error("Couldn't bind to control socket");
104 length = sizeof(ctl_addr);
105 if (getsockname(ctl_sockt,
106 (struct sockaddr *)&ctl_addr, &length) == -1)
107 p_error("Bad address for ctl socket");
110 /* print_addr is a debug print routine */
112 print_addr(struct sockaddr_in addr)
116 printf("addr = %lx, port = %o, family = %o zero = ",
117 (u_long)addr.sin_addr.s_addr, addr.sin_port, addr.sin_family);
119 printf("%o ", (int)addr.sin_zero[i]);