1 files changed, 370 insertions, 0 deletions

diff --git a/plugins/check_time.c b/plugins/check_time.c
new file mode 100644
index 0000000..86c414e
--- /dev/null
+++ b/plugins/check_time.c
@@ -0,0 +1,370 @@
+/******************************************************************************
+*
+* 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 ();
+}