Merge branch 'vendor/BINUTILS224'
[dragonfly.git] / usr.sbin / bthcid / bthcid.c
1 /* $NetBSD: bthcid.c,v 1.3 2007/01/25 20:33:41 plunky Exp $ */
2 /* $DragonFly: src/usr.sbin/bthcid/bthcid.c,v 1.1 2008/01/30 14:10:19 hasso Exp $ */
3
4 /*-
5  * Copyright (c) 2006 Itronix Inc.
6  * 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. The name of Itronix Inc. may not be used to endorse
17  *    or promote products derived from this software without specific
18  *    prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
24  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27  * ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 #include <sys/param.h>
34 #include <sys/stat.h>
35 #include <sys/types.h>
36 #include <sys/event.h>
37 #include <sys/time.h>
38 #include <bluetooth.h>
39 #include <err.h>
40 #include <errno.h>
41 #include <libutil.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <syslog.h>
45 #include <unistd.h>
46
47 #include "bthcid.h"
48
49 const   char    *socket_name = BTHCID_SOCKET_NAME;
50         int      detach = 1;
51
52 int     hci_kq;
53
54 static void     process_signal(int);
55 static void     usage(void);
56
57 int
58 main(int argc, char *argv[])
59 {
60         bdaddr_t        bdaddr;
61         int             ch, hci_fd, control_fd;
62         mode_t          mode;
63         struct kevent   change;
64         struct timespec timeout = { 0, 0 };
65
66         bdaddr_copy(&bdaddr, BDADDR_ANY);
67         mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
68
69         while ((ch = getopt(argc, argv, "d:fm:ns:h")) != -1) {
70                 switch (ch) {
71                 case 'd':
72                         if (!bt_devaddr(optarg, &bdaddr))
73                                 err(EXIT_FAILURE, "%s", optarg);
74                         break;
75
76                 case 'f':
77                         detach = 0;
78                         break;
79
80                 case 'm':
81                         mode = atoi(optarg);
82                         break;
83
84                 case 'n':
85                         socket_name = NULL;
86                         break;
87
88                 case 's':
89                         socket_name = optarg;
90                         break;
91
92                 case 'h':
93                 default:
94                         usage();
95                         /* NOT REACHED */
96                 }
97         }
98
99         if (getuid() != 0)
100                 errx(EXIT_FAILURE,
101                     "** ERROR: You should run %s as privileged user!",
102                     getprogname());
103
104         if (detach)
105                 if (daemon(0, 0) < 0)
106                         err(EXIT_FAILURE, "Could not daemon()ize");
107
108         openlog(getprogname(), LOG_NDELAY | LOG_PERROR | LOG_PID, LOG_DAEMON);
109
110         if ((hci_kq = kqueue()) == -1) {
111                 syslog(LOG_ERR, "could not create kqueue");
112                 exit(EXIT_FAILURE);
113         }
114
115         EV_SET(&change, SIGTERM, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL);
116         kevent(hci_kq, &change, 1, NULL, 0, &timeout);
117         EV_SET(&change, SIGINT, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL);
118         kevent(hci_kq, &change, 1, NULL, 0, &timeout);
119         EV_SET(&change, SIGHUP, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL);
120         kevent(hci_kq, &change, 1, NULL, 0, &timeout);
121
122         if ((hci_fd = init_hci(&bdaddr)) < 0) {
123                 syslog(LOG_ERR, "init_hci(%s)", bt_ntoa(&bdaddr, NULL));
124                 exit(EXIT_FAILURE);
125         }
126
127         if ((control_fd = init_control(socket_name, mode)) < 0) {
128                 syslog(LOG_ERR, "init_control(%s)", socket_name);
129                 exit(EXIT_FAILURE);
130         }
131
132         if (detach && pidfile(NULL) < 0) {
133                 syslog(LOG_ERR, "Could not create PID file: %m");
134                 exit(EXIT_FAILURE);
135         }
136
137         read_config_file();
138         read_keys_file();
139
140         for ( ; ; ) {
141                 int i, nevents;
142                 struct kevent events[BTHCID_KQ_EVENTS], *event;
143
144                 nevents = kevent(hci_kq, NULL, 0, &events[0], BTHCID_KQ_EVENTS, NULL);
145                 if (nevents == -1) {
146                         syslog(LOG_ERR, "kevent failure");
147                         exit(EXIT_FAILURE);
148                 }
149
150                 for (i = 0; i < nevents; ++i) {
151                         event = &events[i];
152
153                         if (event->filter == EVFILT_SIGNAL) {
154                                 process_signal(event->ident);
155                                 continue;
156                         }
157
158                         if (event->filter == EVFILT_TIMER) {
159                                 process_item(event->udata);
160                                 continue;
161                         }
162
163                         if (event->ident == (u_int)control_fd) {
164                                 process_control(event->ident);
165                                 continue;
166                         } else if (event->ident == (u_int)hci_fd) {
167                                 process_hci(event->ident);
168                                 continue;
169                         } else if (event->udata != NULL) {
170                                 process_client(event->ident, event->udata);
171                                 continue;
172                         }
173
174                         syslog(LOG_DEBUG, "Unknown event for descriptor %d",
175                             (int)event->ident);
176                 }
177         }
178
179         /* NOTREACHED */
180         /* gcc fodder */
181         exit(EXIT_FAILURE);
182 }
183
184 static void
185 process_signal(int s)
186 {
187         if (s == SIGHUP) {
188                 syslog(LOG_DEBUG, "Got SIGHUP (%d). Dumping and rereading config", s);
189                 dump_keys_file();
190                 read_config_file();
191                 read_keys_file();               
192                 return;
193         }
194         
195
196
197         syslog(LOG_DEBUG, "Exiting on signal %d", s);
198
199         if (socket_name)
200                 unlink(socket_name);
201
202         clean_config();
203         closelog();
204         exit(EXIT_FAILURE);
205
206 }
207
208 /* Display usage and exit */
209 static void
210 usage(void)
211 {
212
213         fprintf(stderr,
214             "Usage: %s [-fhn] [-c config] [-d devaddr] [-m mode] [-s path]\n"
215             "Where:\n"
216             "\t-c config   specify config filename\n"
217             "\t-d device   specify device address\n"
218             "\t-f          run in foreground\n"
219             "\t-m mode     specify socket permissions\n"
220             "\t-n          do not listen for clients\n"
221             "\t-s path     specify client socket pathname\n"
222             "\t-h          display this message\n",
223             getprogname());
224
225         exit(EXIT_FAILURE);
226 }