Annotation of src/usr.bin/talk/ctl.c, Revision 1.2
1.2 ! deraadt 1: /* $OpenBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $ */
1.1 deraadt 2: /* $NetBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93";
40: #endif
1.2 ! deraadt 41: static char rcsid[] = "$OpenBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: /*
45: * This file handles haggling with the various talk daemons to
46: * get a socket to talk to. sockt is opened and connected in
47: * the progress
48: */
49:
50: #include <sys/types.h>
51: #include <sys/socket.h>
52: #include <protocols/talkd.h>
53: #include <netinet/in.h>
54: #include "talk.h"
55: #include "talk_ctl.h"
56:
57: struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
58: struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
59: struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
60:
61: /* inet addresses of the two machines */
62: struct in_addr my_machine_addr;
63: struct in_addr his_machine_addr;
64:
65: u_short daemon_port; /* port number of the talk daemon */
66:
67: int ctl_sockt;
68: int sockt;
69: int invitation_waiting = 0;
70:
71: CTL_MSG msg;
72:
73: open_sockt()
74: {
75: int length;
76:
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 <= 0)
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: open_ctl()
91: {
92: int length;
93:
94: ctl_addr.sin_port = 0;
95: ctl_addr.sin_addr = my_machine_addr;
96: ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
97: if (ctl_sockt <= 0)
98: p_error("Bad socket");
99: if (bind(ctl_sockt,
100: (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
101: p_error("Couldn't bind to control socket");
102: length = sizeof(ctl_addr);
103: if (getsockname(ctl_sockt,
104: (struct sockaddr *)&ctl_addr, &length) == -1)
105: p_error("Bad address for ctl socket");
106: }
107:
108: /* print_addr is a debug print routine */
109: print_addr(addr)
110: struct sockaddr_in addr;
111: {
112: int i;
113:
114: printf("addr = %x, port = %o, family = %o zero = ",
115: addr.sin_addr, addr.sin_port, addr.sin_family);
116: for (i = 0; i<8;i++)
117: printf("%o ", (int)addr.sin_zero[i]);
118: putchar('\n');
119: }