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-rw-r--r--plugins/check_time.c370
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diff --git a/plugins/check_time.c b/plugins/check_time.c
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+/******************************************************************************
+*
+* CHECK_TIME.C
+*
+* Program: Network time server plugin for Nagios
+* License: GPL
+* Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
+* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
+*
+* $Id$
+*
+* Description:
+*
+* This plugin will attempt to connect to the specified port
+* on the host. Successul connects return STATE_OK, refusals
+* and timeouts return STATE_CRITICAL, other errors return
+* STATE_UNKNOWN.
+*
+* License Information:
+*
+* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+*****************************************************************************/
+
+#include "config.h"
+#include "common.h"
+#include "netutils.h"
+#include "utils.h"
+
+#define PROGNAME "check_time"
+
+#define TIME_PORT 37
+#define UNIX_EPOCH 2208988800UL
+
+unsigned long server_time, raw_server_time;
+time_t diff_time;
+int warning_time = 0;
+int check_warning_time = FALSE;
+int critical_time = 0;
+int check_critical_time = FALSE;
+unsigned long warning_diff = 0;
+int check_warning_diff = FALSE;
+unsigned long critical_diff = 0;
+int check_critical_diff = FALSE;
+int server_port = TIME_PORT;
+char *server_address = NULL;
+
+
+int process_arguments (int, char **);
+int call_getopt (int, char **);
+void print_usage (void);
+void print_help (void);
+
+
+int
+main (int argc, char **argv)
+{
+ int sd;
+ int result;
+
+ if (process_arguments (argc, argv) != OK)
+ usage ("Invalid command arguments supplied\n");
+
+ /* initialize alarm signal handling */
+ signal (SIGALRM, socket_timeout_alarm_handler);
+
+ /* set socket timeout */
+ alarm (socket_timeout);
+ time (&start_time);
+
+ /* try to connect to the host at the given port number */
+ if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK) {
+ if (check_critical_time == TRUE)
+ result = STATE_CRITICAL;
+ else if (check_warning_time == TRUE)
+ result = STATE_WARNING;
+ else
+ result = STATE_UNKNOWN;
+ terminate (result,
+ "TIME UNKNOWN - could not connect to server %s, port %d\n",
+ server_address, server_port);
+ }
+
+ /* watch for the FTP connection string */
+ result = recv (sd, &raw_server_time, sizeof (raw_server_time), 0);
+
+ /* close the connection */
+ close (sd);
+
+ /* reset the alarm */
+ time (&end_time);
+ alarm (0);
+
+ /* return a WARNING status if we couldn't read any data */
+ if (result <= 0) {
+ if (check_critical_time == TRUE)
+ result = STATE_CRITICAL;
+ else if (check_warning_time == TRUE)
+ result = STATE_WARNING;
+ else
+ result = STATE_UNKNOWN;
+ terminate (result,
+ "TIME UNKNOWN - no data on recv() from server %s, port %d\n",
+ server_address, server_port);
+ }
+
+ result = STATE_OK;
+
+ if (check_critical_time == TRUE && (end_time - start_time) > critical_time)
+ result = STATE_CRITICAL;
+ else if (check_warning_time == TRUE
+ && (end_time - start_time) > warning_time) result = STATE_WARNING;
+
+ if (result != STATE_OK)
+ terminate (result, "TIME %s - %d second response time\n",
+ state_text (result), (int) (end_time - start_time));
+
+ server_time = ntohl (raw_server_time) - UNIX_EPOCH;
+ if (server_time > end_time)
+ diff_time = server_time - end_time;
+ else
+ diff_time = end_time - server_time;
+
+ if (check_critical_diff == TRUE && diff_time > critical_diff)
+ result = STATE_CRITICAL;
+ else if (check_warning_diff == TRUE && diff_time > warning_diff)
+ result = STATE_WARNING;
+
+ printf ("TIME %s - %lu second time difference\n", state_text (result),
+ diff_time);
+ return result;
+}
+
+
+
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+ int c;
+
+ if (argc < 2)
+ usage ("\n");
+
+ for (c = 1; c < argc; c++) {
+ if (strcmp ("-to", argv[c]) == 0)
+ strcpy (argv[c], "-t");
+ else if (strcmp ("-wd", argv[c]) == 0)
+ strcpy (argv[c], "-w");
+ else if (strcmp ("-cd", argv[c]) == 0)
+ strcpy (argv[c], "-c");
+ else if (strcmp ("-wt", argv[c]) == 0)
+ strcpy (argv[c], "-W");
+ else if (strcmp ("-ct", argv[c]) == 0)
+ strcpy (argv[c], "-C");
+ }
+
+ c = 0;
+ while ((c += call_getopt (argc - c, &argv[c])) < argc) {
+
+ if (is_option (argv[c]))
+ continue;
+
+ if (server_address == NULL) {
+ if (argc > c) {
+ if (is_host (argv[c]) == FALSE)
+ usage ("Invalid host name/address\n");
+ server_address = argv[c];
+ }
+ else {
+ usage ("Host name was not supplied\n");
+ }
+ }
+ }
+
+ return OK;
+}
+
+
+
+
+
+int
+call_getopt (int argc, char **argv)
+{
+ int c, i = 0;
+
+#ifdef HAVE_GETOPT_H
+ int option_index = 0;
+ static struct option long_options[] = {
+ {"hostname", required_argument, 0, 'H'},
+ {"warning-variance", required_argument, 0, 'w'},
+ {"critical-variance", required_argument, 0, 'c'},
+ {"warning-connect", required_argument, 0, 'W'},
+ {"critical-connect", required_argument, 0, 'C'},
+ {"port", required_argument, 0, 'p'},
+ {"timeout", required_argument, 0, 't'},
+ {"version", no_argument, 0, 'V'},
+ {"help", no_argument, 0, 'h'},
+ {0, 0, 0, 0}
+ };
+#endif
+
+ while (1) {
+#ifdef HAVE_GETOPT_H
+ c =
+ getopt_long (argc, argv, "+hVH:w:c:W:C:p:t:", long_options,
+ &option_index);
+#else
+ c = getopt (argc, argv, "+hVH:w:c:W:C:p:t:");
+#endif
+
+ i++;
+
+ if (c == -1 || c == EOF || c == 1)
+ break;
+
+ switch (c) {
+ case 'H':
+ case 'w':
+ case 'c':
+ case 'W':
+ case 'C':
+ case 'p':
+ case 't':
+ i++;
+ }
+
+ switch (c) {
+ case '?': /* print short usage statement if args not parsable */
+ printf ("%s: Unknown argument: %s\n\n", my_basename (argv[0]), optarg);
+ print_usage ();
+ exit (STATE_UNKNOWN);
+ case 'h': /* help */
+ print_help ();
+ exit (STATE_OK);
+ case 'V': /* version */
+ print_revision (my_basename (argv[0]), "$Revision$");
+ exit (STATE_OK);
+ case 'H': /* hostname */
+ if (is_host (optarg) == FALSE)
+ usage ("Invalid host name/address\n");
+ server_address = optarg;
+ break;
+ case 'w': /* warning-variance */
+ if (is_intnonneg (optarg)) {
+ warning_diff = strtoul (optarg, NULL, 10);
+ check_warning_diff = TRUE;
+ }
+ else if (strspn (optarg, "0123456789:,") > 0) {
+ if (sscanf (optarg, "%lu%*[:,]%d", &warning_diff, &warning_time) == 2) {
+ check_warning_diff = TRUE;
+ check_warning_time = TRUE;
+ }
+ else {
+ usage ("Warning thresholds must be a nonnegative integer\n");
+ }
+ }
+ else {
+ usage ("Warning threshold must be a nonnegative integer\n");
+ }
+ break;
+ case 'c': /* critical-variance */
+ if (is_intnonneg (optarg)) {
+ critical_diff = strtoul (optarg, NULL, 10);
+ check_critical_diff = TRUE;
+ }
+ else if (strspn (optarg, "0123456789:,") > 0) {
+ if (sscanf (optarg, "%lu%*[:,]%d", &critical_diff, &critical_time) ==
+ 2) {
+ check_critical_diff = TRUE;
+ check_critical_time = TRUE;
+ }
+ else {
+ usage ("Critical thresholds must be a nonnegative integer\n");
+ }
+ }
+ else {
+ usage ("Critical threshold must be a nonnegative integer\n");
+ }
+ break;
+ case 'W': /* warning-connect */
+ if (!is_intnonneg (optarg))
+ usage ("Warning threshold must be a nonnegative integer\n");
+ warning_time = atoi (optarg);
+ check_warning_time = TRUE;
+ break;
+ case 'C': /* critical-connect */
+ if (!is_intnonneg (optarg))
+ usage ("Critical threshold must be a nonnegative integer\n");
+ critical_time = atoi (optarg);
+ check_critical_time = TRUE;
+ break;
+ case 'p': /* port */
+ if (!is_intnonneg (optarg))
+ usage ("Serevr port must be a nonnegative integer\n");
+ server_port = atoi (optarg);
+ break;
+ case 't': /* timeout */
+ if (!is_intnonneg (optarg))
+ usage ("Timeout interval must be a nonnegative integer\n");
+ socket_timeout = atoi (optarg);
+ break;
+ }
+ }
+ return i;
+}
+
+
+
+
+
+void
+print_usage (void)
+{
+ printf
+ ("Usage: check_time -H <host_address> [-p port] [-w variance] [-c variance]\n"
+ " [-W connect_time] [-C connect_time] [-t timeout]\n");
+}
+
+
+
+
+
+void
+print_help (void)
+{
+ print_revision (PROGNAME, "$Revision$");
+ printf
+ ("Copyright (c) 2000 Ethan Galstad/Karl DeBisschop\n\n"
+ "This plugin connects to a time port on the specified host.\n\n");
+ print_usage ();
+ printf
+ ("Options:\n"
+ " -H, --hostname=ADDRESS\n"
+ " Host name argument for servers using host headers (use numeric\n"
+ " address if possible to bypass DNS lookup).\n"
+ " -w, --warning-variance=INTEGER\n"
+ " Time difference (sec.) necessary to result in a warning status\n"
+ " -c, --critical-variance=INTEGER\n"
+ " Time difference (sec.) necessary to result in a critical status\n"
+ " -W, --warning-connect=INTEGER\n"
+ " Response time (sec.) necessary to result in warning status\n"
+ " -C, --critical-connect=INTEGER\n"
+ " Response time (sec.) necessary to result in critical status\n"
+ " -t, --timeout=INTEGER\n"
+ " Seconds before connection times out (default: %d)\n"
+ " -p, --port=INTEGER\n"
+ " Port number (default: %d)\n"
+ " -h, --help\n"
+ " Print detailed help screen\n"
+ " -V, --version\n"
+ " Print version information\n\n", DEFAULT_SOCKET_TIMEOUT, TIME_PORT);
+ support ();
+}
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