Annotation of src/usr.bin/talk/ctl.c, Revision 1.11
1.11 ! deraadt 1: /* $OpenBSD: ctl.c,v 1.10 2009/05/09 11:05:00 chl 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.
1.7 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: /*
34: * This file handles haggling with the various talk daemons to
35: * get a socket to talk to. sockt is opened and connected in
36: * the progress
37: */
38:
39: #include "talk.h"
1.3 pjanzen 40: #include <arpa/inet.h>
1.1 deraadt 41: #include "talk_ctl.h"
42:
43: struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
44: struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
45: struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
46:
47: /* inet addresses of the two machines */
48: struct in_addr my_machine_addr;
49: struct in_addr his_machine_addr;
50:
51: u_short daemon_port; /* port number of the talk daemon */
52:
53: int ctl_sockt;
54: int sockt;
55: int invitation_waiting = 0;
56:
57: CTL_MSG msg;
58:
1.3 pjanzen 59: void
1.8 deraadt 60: open_sockt(void)
1.1 deraadt 61: {
1.9 tedu 62: socklen_t length;
1.1 deraadt 63:
64: my_addr.sin_addr = my_machine_addr;
65: my_addr.sin_port = 0;
66: sockt = socket(AF_INET, SOCK_STREAM, 0);
1.9 tedu 67: if (sockt == -1)
1.5 millert 68: quit("Bad socket", 1);
1.1 deraadt 69: if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
1.5 millert 70: quit("Binding local socket", 1);
1.1 deraadt 71: length = sizeof(my_addr);
72: if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
1.5 millert 73: quit("Bad address for socket", 1);
1.1 deraadt 74: }
75:
76: /* open the ctl socket */
1.3 pjanzen 77: void
1.8 deraadt 78: open_ctl(void)
1.1 deraadt 79: {
1.9 tedu 80: socklen_t length;
1.1 deraadt 81:
82: ctl_addr.sin_port = 0;
83: ctl_addr.sin_addr = my_machine_addr;
84: ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
1.9 tedu 85: if (ctl_sockt == -1)
1.5 millert 86: quit("Bad socket", 1);
1.1 deraadt 87: if (bind(ctl_sockt,
88: (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
1.5 millert 89: quit("Couldn't bind to control socket", 1);
1.1 deraadt 90: length = sizeof(ctl_addr);
91: if (getsockname(ctl_sockt,
92: (struct sockaddr *)&ctl_addr, &length) == -1)
1.5 millert 93: quit("Bad address for ctl socket", 1);
1.1 deraadt 94: }