377 lines
10 KiB
C
377 lines
10 KiB
C
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/******************************************************************************
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*
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* Nagios check_time plugin
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*
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* License: GPL
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* Copyright (c) 1999-2006 nagios-plugins team
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*
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* Last Modified: $Date: 2006/10/19 23:53:28 $
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*
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* Description:
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*
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* This file contains the check_time plugin
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*
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* This plugin will check the time on the specified host.
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*
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* License Information:
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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 Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* $Id: check_time.c,v 1.28 2006/10/19 23:53:28 opensides Exp $
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*
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******************************************************************************/
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const char *progname = "check_time";
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const char *revision = "$Revision: 1.28 $";
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const char *copyright = "1999-2006";
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const char *email = "nagiosplug-devel@lists.sourceforge.net";
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#include "common.h"
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#include "netutils.h"
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#include "utils.h"
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enum {
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TIME_PORT = 37
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};
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#define UNIX_EPOCH 2208988800UL
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uint32_t server_time, raw_server_time;
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time_t diff_time;
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int warning_time = 0;
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int check_warning_time = FALSE;
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int critical_time = 0;
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int check_critical_time = FALSE;
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unsigned long warning_diff = 0;
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int check_warning_diff = FALSE;
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unsigned long critical_diff = 0;
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int check_critical_diff = FALSE;
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int server_port = TIME_PORT;
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char *server_address = NULL;
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int use_udp = FALSE;
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int process_arguments (int, char **);
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void print_help (void);
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void print_usage (void);
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int
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main (int argc, char **argv)
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{
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int sd;
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int result = STATE_UNKNOWN;
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time_t conntime;
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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if (process_arguments (argc, argv) == ERROR)
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usage4 (_("Could not parse arguments"));
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/* initialize alarm signal handling */
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signal (SIGALRM, socket_timeout_alarm_handler);
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/* set socket timeout */
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alarm (socket_timeout);
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time (&start_time);
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/* try to connect to the host at the given port number */
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if (use_udp) {
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result = my_udp_connect (server_address, server_port, &sd);
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} else {
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result = my_tcp_connect (server_address, server_port, &sd);
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}
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if (result != STATE_OK) {
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if (check_critical_time == TRUE)
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result = STATE_CRITICAL;
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else if (check_warning_time == TRUE)
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result = STATE_WARNING;
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else
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result = STATE_UNKNOWN;
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die (result,
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_("TIME UNKNOWN - could not connect to server %s, port %d\n"),
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server_address, server_port);
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}
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if (use_udp) {
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if (send (sd, "", 0, 0) < 0) {
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if (check_critical_time == TRUE)
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result = STATE_CRITICAL;
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else if (check_warning_time == TRUE)
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result = STATE_WARNING;
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else
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result = STATE_UNKNOWN;
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die (result,
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_("TIME UNKNOWN - could not send UDP request to server %s, port %d\n"),
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server_address, server_port);
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}
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}
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/* watch for the connection string */
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result = recv (sd, (void *)&raw_server_time, sizeof (raw_server_time), 0);
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/* close the connection */
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close (sd);
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/* reset the alarm */
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time (&end_time);
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alarm (0);
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/* return a WARNING status if we couldn't read any data */
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if (result <= 0) {
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if (check_critical_time == TRUE)
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result = STATE_CRITICAL;
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else if (check_warning_time == TRUE)
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result = STATE_WARNING;
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else
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result = STATE_UNKNOWN;
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die (result,
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_("TIME UNKNOWN - no data received from server %s, port %d\n"),
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server_address, server_port);
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}
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result = STATE_OK;
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conntime = (end_time - start_time);
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if (check_critical_time == TRUE && conntime > critical_time)
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result = STATE_CRITICAL;
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else if (check_warning_time == TRUE && conntime > warning_time)
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result = STATE_WARNING;
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if (result != STATE_OK)
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die (result, _("TIME %s - %d second response time|%s\n"),
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state_text (result), (int)conntime,
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perfdata ("time", (long)conntime, "s",
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check_warning_time, (long)warning_time,
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check_critical_time, (long)critical_time,
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TRUE, 0, FALSE, 0));
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server_time = ntohl (raw_server_time) - UNIX_EPOCH;
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if (server_time > (unsigned long)end_time)
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diff_time = server_time - (unsigned long)end_time;
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else
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diff_time = (unsigned long)end_time - server_time;
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if (check_critical_diff == TRUE && diff_time > (time_t)critical_diff)
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result = STATE_CRITICAL;
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else if (check_warning_diff == TRUE && diff_time > (time_t)warning_diff)
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result = STATE_WARNING;
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printf (_("TIME %s - %lu second time difference|%s %s\n"),
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state_text (result), diff_time,
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perfdata ("time", (long)conntime, "s",
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check_warning_time, (long)warning_time,
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check_critical_time, (long)critical_time,
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TRUE, 0, FALSE, 0),
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perfdata ("offset", (long)diff_time, "s",
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check_warning_diff, (long)warning_diff,
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check_critical_diff, (long)critical_diff,
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TRUE, 0, FALSE, 0));
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return result;
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}
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/* process command-line arguments */
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int
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process_arguments (int argc, char **argv)
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{
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int c;
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int option = 0;
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static struct option longopts[] = {
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{"hostname", required_argument, 0, 'H'},
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{"warning-variance", required_argument, 0, 'w'},
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{"critical-variance", required_argument, 0, 'c'},
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{"warning-connect", required_argument, 0, 'W'},
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{"critical-connect", required_argument, 0, 'C'},
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{"port", required_argument, 0, 'p'},
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{"udp", no_argument, 0, 'u'},
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{"timeout", required_argument, 0, 't'},
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{"version", no_argument, 0, 'V'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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if (argc < 2)
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usage ("\n");
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for (c = 1; c < argc; c++) {
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if (strcmp ("-to", argv[c]) == 0)
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strcpy (argv[c], "-t");
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else if (strcmp ("-wd", argv[c]) == 0)
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strcpy (argv[c], "-w");
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else if (strcmp ("-cd", argv[c]) == 0)
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strcpy (argv[c], "-c");
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else if (strcmp ("-wt", argv[c]) == 0)
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strcpy (argv[c], "-W");
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else if (strcmp ("-ct", argv[c]) == 0)
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strcpy (argv[c], "-C");
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}
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while (1) {
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c = getopt_long (argc, argv, "hVH:w:c:W:C:p:t:u", longopts,
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&option);
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if (c == -1 || c == EOF)
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break;
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switch (c) {
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case '?': /* print short usage statement if args not parsable */
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usage2 (_("Unknown argument"), optarg);
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case 'h': /* help */
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print_help ();
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exit (STATE_OK);
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case 'V': /* version */
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print_revision (progname, revision);
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exit (STATE_OK);
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case 'H': /* hostname */
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if (is_host (optarg) == FALSE)
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usage2 (_("Invalid hostname/address"), optarg);
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server_address = optarg;
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break;
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case 'w': /* warning-variance */
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if (is_intnonneg (optarg)) {
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warning_diff = strtoul (optarg, NULL, 10);
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check_warning_diff = TRUE;
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}
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else if (strspn (optarg, "0123456789:,") > 0) {
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if (sscanf (optarg, "%lu%*[:,]%d", &warning_diff, &warning_time) == 2) {
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check_warning_diff = TRUE;
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check_warning_time = TRUE;
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}
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else {
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usage4 (_("Warning thresholds must be a positive integer"));
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}
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}
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else {
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usage4 (_("Warning threshold must be a positive integer"));
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}
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break;
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case 'c': /* critical-variance */
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if (is_intnonneg (optarg)) {
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critical_diff = strtoul (optarg, NULL, 10);
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check_critical_diff = TRUE;
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}
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else if (strspn (optarg, "0123456789:,") > 0) {
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if (sscanf (optarg, "%lu%*[:,]%d", &critical_diff, &critical_time) ==
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2) {
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check_critical_diff = TRUE;
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check_critical_time = TRUE;
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}
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else {
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usage4 (_("Critical thresholds must be a positive integer"));
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}
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}
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else {
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usage4 (_("Critical threshold must be a positive integer"));
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}
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break;
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case 'W': /* warning-connect */
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if (!is_intnonneg (optarg))
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usage4 (_("Warning threshold must be a positive integer"));
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else
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warning_time = atoi (optarg);
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check_warning_time = TRUE;
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break;
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case 'C': /* critical-connect */
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if (!is_intnonneg (optarg))
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usage4 (_("Critical threshold must be a positive integer"));
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else
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critical_time = atoi (optarg);
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check_critical_time = TRUE;
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break;
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case 'p': /* port */
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if (!is_intnonneg (optarg))
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usage4 (_("Port must be a positive integer"));
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else
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server_port = atoi (optarg);
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break;
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case 't': /* timeout */
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if (!is_intnonneg (optarg))
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usage2 (_("Timeout interval must be a positive integer"), optarg);
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else
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socket_timeout = atoi (optarg);
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break;
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case 'u': /* udp */
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use_udp = TRUE;
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}
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}
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c = optind;
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if (server_address == NULL) {
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if (argc > c) {
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if (is_host (argv[c]) == FALSE)
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usage2 (_("Invalid hostname/address"), optarg);
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server_address = argv[c];
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}
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else {
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usage4 (_("Hostname was not supplied"));
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}
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}
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return OK;
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}
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void
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print_help (void)
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{
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char *myport;
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asprintf (&myport, "%d", TIME_PORT);
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print_revision (progname, revision);
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printf ("Copyright (c) 1999 Ethan Galstad\n");
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printf (COPYRIGHT, copyright, email);
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printf ("%s\n", _("This plugin will check the time on the specified host."));
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printf ("\n\n");
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print_usage ();
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printf (_(UT_HELP_VRSN));
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printf (_(UT_HOST_PORT), 'p', myport);
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printf (" %s\n", "-u, --udp");
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printf (" %s\n", _("Use UDP to connect, not TCP"));
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printf (" %s\n", "-w, --warning-variance=INTEGER");
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printf (" %s\n", _("Time difference (sec.) necessary to result in a warning status"));
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printf (" %s\n", "-c, --critical-variance=INTEGER");
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printf (" %s\n", _("Time difference (sec.) necessary to result in a critical status"));
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printf (" %s\n", "-W, --warning-connect=INTEGER");
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printf (" %s\n", _("Response time (sec.) necessary to result in warning status"));
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printf (" %s\n", "-C, --critical-connect=INTEGER");
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printf (" %s\n", _("Response time (sec.) necessary to result in critical status"));
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printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
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printf (_(UT_SUPPORT));
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}
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void
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print_usage (void)
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{
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printf (_("Usage:"));
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printf ("%s -H <host_address> [-p port] [-u] [-w variance] [-c variance]\n",progname);
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printf (" [-W connect_time] [-C connect_time] [-t timeout]\n");
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}
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