/*************************************************************************** * Copyright (C) 05/2011 by Olaf Rempel * * razzor@kopf-tisch.de * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #include #include #include #include #include #include #include #include #include #include "configfile.h" #include "disktimeout.h" #include "event.h" #include "lcd.h" #include "logging.h" #include "pidfile.h" #include "signals.h" #define LCD_DEVICE "/dev/ttyS0" #define LCD_TIMEOUT 15 #define DEFAULT_CONFIG PROGNAME".conf" #define DEFAULT_LOGFILE PROGNAME".log" #define DEFAULT_PIDFILE PROGNAME".pid" static struct option opts[] = { {"config", 1, 0, 'c'}, {"debug", 0, 0, 'd'}, {"help", 0, 0, 'h'}, {0, 0, 0, 0} }; #define PAGE_MAX 7 static int page; static int button_callback(struct lcddev *dev, int button, void *privdata) { if (button == LCD_EVENT_BUTTON2) { page = (page < PAGE_MAX) ? page +1 : 0; } else if (button == LCD_EVENT_BUTTON1) { page = (page > 0) ? page -1 : PAGE_MAX; } else if (button == LCD_EVENT_BACKLIGHT) { return 0; } switch (page) { case 0: lcd_setlines(dev, 500, "Debian GNU/Linux 5.0", "Linux 2.6.32.27-486 i586"); break; case 1: lcd_setlines(dev, 0, "Hostname:", "storenix.lan"); break; case 2: lcd_setlines(dev, 0, "Address(br0):", "10.10.250.135"); break; case 3: lcd_setlines(dev, 0, "Netmask(br0):", "255.255.0.0"); break; case 4: lcd_setlines(dev, 0, "Gateway(br0):", "10.10.250.250"); break; case 5: lcd_setlines(dev, 0, "LoadAVG:", "x.xx x.xx x.xx"); break; case 6: lcd_setlines(dev, 0, "Uptime:", " XXXd XX:XX:XX"); break; case 7: lcd_setlines(dev, 0, "Time: XX:XX:XX", "Date: XX-XX-XXXX"); break; } lcd_trigger_backlight(dev, LCD_TIMEOUT); return 1; } static int restart_var; static void trigger_restart(void *privdata) { int *restart = (int *)privdata; *restart = 1; } int check_restart(int *maxfd, void *readfds, void *writefds, struct timeval *timeout, void *privdata) { int *restart = (int *)privdata; if (*restart == 1) { *restart = 0; return 1; } return 0; } int main(int argc, char *argv[]) { char *config = DEFAULT_CONFIG; int code, arg = 0, debug = 0; do { code = getopt_long(argc, argv, "c:dh", opts, &arg); switch (code) { case 'c': /* config */ config = optarg; break; case 'd': /* debug */ debug = 1; break; case 'h': /* help */ printf("Usage: "PROGNAME" [options]\n" "Options: \n" " --config -c configfile use this configfile\n" " --debug -d do not fork and log to stderr\n" " --help -h this help\n" "\n"); exit(0); break; case '?': /* error */ exit(1); break; default: /* unknown / all options parsed */ break; } } while (code != -1); /* parse config file */ if (config_parse(config) < 0) exit(1); if (!debug) { /* check pidfile */ const char *pidfile = config_get_string("global", "pidfile", DEFAULT_PIDFILE); if (pidfile_check(pidfile, 1) != 0) { log_print(LOG_ERROR, PROGNAME" already running"); exit(1); } /* start logging */ const char *logfile = config_get_string("global", "logfile", DEFAULT_LOGFILE); if (log_init(logfile) < 0) exit(1); /* zum daemon mutieren */ if (daemon(-1, 0) < 0) { log_print(LOG_ERROR, "failed to daemonize"); exit(1); } /* create pidfile */ if (pidfile_create(pidfile) < 0) { log_print(LOG_ERROR, "failed to create pidfile %s", pidfile); exit(1); } } signal_init(); signal_add_callback(SIGHUP, trigger_restart, (void *)&restart_var); log_print(LOG_EVERYTIME, PROGNAME" started (pid:%d)", getpid()); while (1) { const char *lcddevice = config_get_string("global", "lcddevice", NULL); struct lcddev *dev = NULL; if (lcddevice != NULL) { dev = lcd_init(lcddevice, &button_callback, NULL); if (dev == NULL) break; } if (disktimeout_init() < 0) break; /* exited on restart / SIGUSR1 */ event_loop(check_restart, NULL, (void *)&restart_var); disktimeout_exit(); if (dev != NULL) lcd_close(dev); config_free(); if (config_parse(config) < 0) break; const char *logfile = config_get_string("global", "logfile", DEFAULT_LOGFILE); if (!debug && log_init(logfile) < 0) break; log_print(LOG_EVERYTIME, PROGNAME" restarted (pid:%d) ", getpid()); } return 0; }