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      1 /*	$NetBSD: bthcid.c,v 1.6 2011/08/27 22:26:05 joerg Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of Itronix Inc. may not be used to endorse
     16  *    or promote products derived from this software without specific
     17  *    prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     26  * ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __COPYRIGHT("@(#) Copyright (c) 2006 Itronix, Inc.\
     34   Copyright (c) 2001-2002 Maksim Yevmenkin m_evmenkin (at) yahoo.com.\
     35   All rights reserved.");
     36 __RCSID("$NetBSD: bthcid.c,v 1.6 2011/08/27 22:26:05 joerg Exp $");
     37 
     38 #include <sys/param.h>
     39 #include <sys/stat.h>
     40 #include <bluetooth.h>
     41 #include <err.h>
     42 #include <errno.h>
     43 #include <event.h>
     44 #include <stdlib.h>
     45 #include <string.h>
     46 #include <syslog.h>
     47 #include <unistd.h>
     48 #include <util.h>
     49 
     50 #include "bthcid.h"
     51 
     52 static const char	*socket_name = BTHCID_SOCKET_NAME;
     53 static int		 detach = 1;
     54 
     55 static struct event	sighup_ev;
     56 static struct event	sigint_ev;
     57 static struct event	sigterm_ev;
     58 
     59 __dead static void	process_signal(int, short, void *);
     60 __dead static void	usage(void);
     61 
     62 int
     63 main(int argc, char *argv[])
     64 {
     65 	const char	*device;
     66 	int		ch;
     67 	mode_t		mode;
     68 
     69 	device = NULL;
     70 	mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
     71 
     72 	while ((ch = getopt(argc, argv, "d:fm:ns:h")) != -1) {
     73 		switch (ch) {
     74 		case 'd':
     75 			device = optarg;
     76 			break;
     77 
     78 		case 'f':
     79 			detach = 0;
     80 			break;
     81 
     82 		case 'm':
     83 			mode = atoi(optarg);
     84 			break;
     85 
     86 		case 'n':
     87 			socket_name = NULL;
     88 			break;
     89 
     90 		case 's':
     91 			socket_name = optarg;
     92 			break;
     93 
     94 		case 'h':
     95 		default:
     96 			usage();
     97 			/* NOT REACHED */
     98 		}
     99 	}
    100 
    101 	if (getuid() != 0)
    102 		errx(EXIT_FAILURE,
    103 		    "** ERROR: You should run %s as privileged user!",
    104 		    getprogname());
    105 
    106 	if (detach)
    107 		if (daemon(0, 0) < 0)
    108 			err(EXIT_FAILURE, "Could not daemon()ize");
    109 
    110 	openlog(getprogname(), LOG_NDELAY | LOG_PERROR | LOG_PID, LOG_DAEMON);
    111 
    112 	event_init();
    113 
    114 	signal_set(&sigterm_ev, SIGTERM, process_signal, NULL);
    115 	if (signal_add(&sigterm_ev, NULL) < 0) {
    116 		syslog(LOG_ERR, "signal_add(sigterm_ev)");
    117 		exit(EXIT_FAILURE);
    118 	}
    119 
    120 	signal_set(&sigint_ev, SIGINT, process_signal, NULL);
    121 	if (signal_add(&sigint_ev, NULL) < 0) {
    122 		syslog(LOG_ERR, "signal_add(sigint_ev)");
    123 		exit(EXIT_FAILURE);
    124 	}
    125 
    126 	signal_set(&sighup_ev, SIGHUP, process_signal, NULL);
    127 	if (signal_add(&sighup_ev, NULL) < 0) {
    128 		syslog(LOG_ERR, "signal_add(sighup_ev)");
    129 		exit(EXIT_FAILURE);
    130 	}
    131 
    132 	if (init_hci(device) < 0) {
    133 		syslog(LOG_ERR, "init_hci(%s)", device);
    134 		exit(EXIT_FAILURE);
    135 	}
    136 
    137 	if (init_control(socket_name, mode) < 0) {
    138 		syslog(LOG_ERR, "init_control(%s)", socket_name);
    139 		exit(EXIT_FAILURE);
    140 	}
    141 
    142 	if (detach && pidfile(NULL) < 0) {
    143 		syslog(LOG_ERR, "Could not create PID file: %m");
    144 		exit(EXIT_FAILURE);
    145 	}
    146 
    147 	event_dispatch();
    148 
    149 	/* NOTREACHED */
    150 	/* gcc fodder */
    151 	exit(EXIT_FAILURE);
    152 }
    153 
    154 static void
    155 process_signal(int s, short e, void *arg)
    156 {
    157 
    158 	syslog(LOG_DEBUG, "Exiting on signal %d", s);
    159 
    160 	if (socket_name)
    161 		unlink(socket_name);
    162 
    163 	closelog();
    164 	exit(EXIT_FAILURE);
    165 
    166 }
    167 
    168 /* Display usage and exit */
    169 static void
    170 usage(void)
    171 {
    172 
    173 	fprintf(stderr,
    174 	    "Usage: %s [-fhn] [-c config] [-d device] [-m mode] [-s path]\n"
    175 	    "Where:\n"
    176 	    "\t-c config   specify config filename\n"
    177 	    "\t-d device   specify device address\n"
    178 	    "\t-f          run in foreground\n"
    179 	    "\t-m mode     specify socket permissions\n"
    180 	    "\t-n          do not listen for clients\n"
    181 	    "\t-s path     specify client socket pathname\n"
    182 	    "\t-h          display this message\n",
    183 	    getprogname());
    184 
    185 	exit(EXIT_FAILURE);
    186 }
    187