277 lines
6.0 KiB
C
277 lines
6.0 KiB
C
/*
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* bthidd.c
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*
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* Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: bthidd.c,v 1.7 2004/11/17 21:59:42 max Exp $
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* $FreeBSD$
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*/
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#include <sys/time.h>
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#include <sys/queue.h>
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#include <assert.h>
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#include <bluetooth.h>
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#include <err.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <unistd.h>
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#include <usbhid.h>
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#include "bthidd.h"
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#include "bthid_config.h"
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static int write_pid_file (char const *file);
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static int remove_pid_file (char const *file);
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static int elapsed (int tval);
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static void sighandler (int s);
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static void usage (void);
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/*
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* bthidd
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*/
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static int done = 0; /* are we done? */
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int
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main(int argc, char *argv[])
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{
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struct bthid_server srv;
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struct sigaction sa;
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char const *pid_file = BTHIDD_PIDFILE, *ep = NULL;
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int opt, detach, tval;
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memset(&srv, 0, sizeof(srv));
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memcpy(&srv.bdaddr, NG_HCI_BDADDR_ANY, sizeof(srv.bdaddr));
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srv.windex = -1;
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detach = 1;
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tval = 10; /* sec */
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while ((opt = getopt(argc, argv, "a:c:dH:hp:s:t:")) != -1) {
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switch (opt) {
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case 'a': /* BDADDR */
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if (!bt_aton(optarg, &srv.bdaddr)) {
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struct hostent *he = NULL;
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if ((he = bt_gethostbyname(optarg)) == NULL)
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errx(1, "%s: %s", optarg, hstrerror(h_errno));
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memcpy(&srv.bdaddr, he->h_addr, sizeof(srv.bdaddr));
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}
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break;
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case 'c': /* config file */
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config_file = optarg;
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break;
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case 'd': /* do not detach */
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detach = 0;
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break;
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case 'H': /* hids file */
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hids_file = optarg;
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break;
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case 'p': /* pid file */
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pid_file = optarg;
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break;
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case 's': /* switch script */
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srv.script = optarg;
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break;
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case 't': /* rescan interval */
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tval = strtol(optarg, (char **) &ep, 10);
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if (*ep != '\0' || tval <= 0)
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usage();
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break;
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case 'u': /* wired keyboard index */
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srv.windex = strtol(optarg, (char **) &ep, 10);
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if (*ep != '\0' || srv.windex < 0)
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usage();
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break;
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case 'h':
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default:
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usage();
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/* NOT REACHED */
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}
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}
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openlog(BTHIDD_IDENT, LOG_PID|LOG_PERROR|LOG_NDELAY, LOG_USER);
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/* Become daemon if required */
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if (detach && daemon(0, 0) < 0) {
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syslog(LOG_CRIT, "Could not become daemon. %s (%d)",
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strerror(errno), errno);
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exit(1);
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}
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/* Install signal handler */
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = sighandler;
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if (sigaction(SIGTERM, &sa, NULL) < 0 ||
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sigaction(SIGHUP, &sa, NULL) < 0 ||
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sigaction(SIGINT, &sa, NULL) < 0) {
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syslog(LOG_CRIT, "Could not install signal handlers. %s (%d)",
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strerror(errno), errno);
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exit(1);
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}
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sa.sa_handler = SIG_IGN;
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if (sigaction(SIGPIPE, &sa, NULL) < 0) {
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syslog(LOG_CRIT, "Could not install signal handlers. %s (%d)",
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strerror(errno), errno);
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exit(1);
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}
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sa.sa_handler = SIG_IGN;
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sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT;
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if (sigaction(SIGCHLD, &sa, NULL) < 0) {
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syslog(LOG_CRIT, "Could not install signal handlers. %s (%d)",
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strerror(errno), errno);
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exit(1);
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}
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if (read_config_file() < 0 || read_hids_file() < 0 ||
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server_init(&srv) < 0 || write_pid_file(pid_file) < 0)
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exit(1);
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for (done = 0; !done; ) {
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if (elapsed(tval))
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client_rescan(&srv);
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if (server_do(&srv) < 0)
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break;
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}
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server_shutdown(&srv);
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remove_pid_file(pid_file);
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clean_config();
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closelog();
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return (0);
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}
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/*
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* Write pid file
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*/
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static int
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write_pid_file(char const *file)
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{
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FILE *pid = NULL;
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assert(file != NULL);
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if ((pid = fopen(file, "w")) == NULL) {
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syslog(LOG_ERR, "Could not open file %s. %s (%d)",
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file, strerror(errno), errno);
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return (-1);
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}
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fprintf(pid, "%d", getpid());
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fclose(pid);
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return (0);
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}
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/*
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* Remote pid file
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*/
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static int
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remove_pid_file(char const *file)
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{
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assert(file != NULL);
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if (unlink(file) < 0) {
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syslog(LOG_ERR, "Could not unlink file %s. %s (%d)",
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file, strerror(errno), errno);
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return (-1);
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}
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return (0);
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}
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/*
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* Returns true if desired time interval has elapsed
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*/
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static int
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elapsed(int tval)
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{
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static struct timeval last = { 0, };
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struct timeval now;
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gettimeofday(&now, NULL);
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if (now.tv_sec - last.tv_sec >= tval) {
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last = now;
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return (1);
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}
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return (0);
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}
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/*
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* Signal handler
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*/
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static void
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sighandler(int s)
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{
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syslog(LOG_NOTICE, "Got signal %d, total number of signals %d",
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s, ++ done);
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}
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/*
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* Display usage and exit
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*/
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static void
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usage(void)
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{
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fprintf(stderr,
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"Usage: %s [options]\n" \
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"Where options are:\n" \
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" -a address specify address to listen on (default ANY)\n" \
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" -c file specify config file name\n" \
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" -d run in foreground\n" \
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" -H file specify known HIDs file name\n" \
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" -h display this message\n" \
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" -p file specify PID file name\n" \
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" -s script specify keyboard switching script\n" \
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" -t tval specify client rescan interval (sec)\n" \
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" -u unit specify wired keyboard unit\n" \
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"", BTHIDD_IDENT);
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exit(255);
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}
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