125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/***************************************************************************
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* Copyright (C) 12/2010 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <getopt.h>
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#include "configfile.h"
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#include "event.h"
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#include "logging.h"
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#include "rrdtool.h"
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#include "pidfile.h"
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#define DEFAULT_CONFIG "snmp2rrd.conf"
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#define DEFAULT_LOGFILE "snmp2rrd.log"
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#define DEFAULT_PIDFILE "snmp2rrd.pid"
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int snmp_init(void);
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int snmp_pre_select_cb(int *maxfd, void *readfds, void *writefds, struct timeval *timeout, void *privdata);
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int snmp_post_select_cb(int retval, void *readfds, void *writefds, void *privdata);
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static struct option opts[] = {
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{"config", 1, 0, 'c'},
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{"debug", 0, 0, 'd'},
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{"help", 0, 0, 'h'},
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{0, 0, 0, 0}
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};
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int main(int argc, char *argv[])
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{
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char *config = DEFAULT_CONFIG;
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int code, arg = 0, debug = 0;
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do {
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code = getopt_long(argc, argv, "c:dh", opts, &arg);
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switch (code) {
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case 'c': /* config */
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config = optarg;
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break;
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case 'd': /* debug */
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debug = 1;
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break;
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case 'h': /* help */
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printf("Usage: snmp2rrd [options]\n"
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"Options: \n"
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" --config -c configfile use this configfile\n"
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" --debug -d do not fork and log to stderr\n"
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" --help -h this help\n"
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"\n");
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exit(0);
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break;
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case '?': /* error */
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exit(1);
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break;
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default: /* unknown / all options parsed */
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break;
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}
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} while (code != -1);
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/* parse config file */
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if (config_parse(config) < 0)
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exit(1);
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if (!debug) {
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/* check pidfile */
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const char *pidfile = config_get_string("global", "pidfile", DEFAULT_PIDFILE);
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if (pidfile_check(pidfile, 1) != 0) {
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log_print(LOG_ERROR, "snmp2rrd already running");
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exit(1);
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}
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/* start logging */
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const char *logfile = config_get_string("global", "logfile", DEFAULT_LOGFILE);
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if (log_init(logfile) < 0)
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exit(1);
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/* mutate to daemon */
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if (daemon(-1, 0) < 0) {
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log_print(LOG_ERROR, "failed to daemonize");
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exit(1);
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}
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/* create pidfile */
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if (pidfile_create(pidfile) < 0) {
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log_print(LOG_ERROR, "failed to create pidfile %s", pidfile);
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exit(1);
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}
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}
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my_rrd_init();
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snmp_init();
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log_print(LOG_EVERYTIME, "snmp2rrd started (pid:%d)", getpid());
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event_loop(snmp_pre_select_cb, snmp_post_select_cb, NULL);
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log_close();
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config_free();
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return 0;
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}
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