1 files changed, 325 insertions, 0 deletions
diff --git a/plugins/check_nagios.c b/plugins/check_nagios.c
new file mode 100644
index 0000000..40d68f0
--- /dev/null
+++ b/plugins/check_nagios.c
@@ -0,0 +1,325 @@
+/*****************************************************************************
+* 
+* Monitoring check_nagios plugin
+* 
+* License: GPL
+* Copyright (c) 1999-2007 Monitoring Plugins Development Team
+* 
+* Description:
+* 
+* This file contains the check_nagios plugin
+* 
+* This plugin checks the status of the Nagios process on the local machine.
+* The plugin will check to make sure the Nagios status log is no older than
+* the number of minutes specified by the expires option.
+* It also checks the process table for a process matching the command
+* argument.
+* 
+* 
+* 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 3 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, see <http://www.gnu.org/licenses/>.
+* 
+* 
+*****************************************************************************/
+
+const char *progname = "check_nagios";
+const char *copyright = "1999-2007";
+const char *email = "devel@monitoring-plugins.org";
+
+#include "common.h"
+#include "runcmd.h"
+#include "utils.h"
+
+int process_arguments (int, char **);
+void print_help (void);
+void print_usage (void);
+
+char *status_log = NULL;
+char *process_string = NULL;
+int expire_minutes = 0;
+
+int verbose = 0;
+
+int
+main (int argc, char **argv)
+{
+	int result = STATE_UNKNOWN;
+	char input_buffer[MAX_INPUT_BUFFER];
+	unsigned long latest_entry_time = 0L;
+	unsigned long temp_entry_time = 0L;
+	int proc_entries = 0;
+	time_t current_time;
+	char *temp_ptr;
+	FILE *fp;
+	int procuid = 0;
+	int procpid = 0;
+	int procppid = 0;
+	int procvsz = 0;
+	int procrss = 0;
+	float procpcpu = 0;
+	char procstat[8];
+#ifdef PS_USES_PROCETIME
+	char procetime[MAX_INPUT_BUFFER];
+#endif /* PS_USES_PROCETIME */
+	char procprog[MAX_INPUT_BUFFER];
+	char *procargs;
+	int pos, cols;
+	int expected_cols = PS_COLS - 1;
+	const char *zombie = "Z";
+	char *temp_string;
+	output chld_out, chld_err;
+	size_t i;
+
+	setlocale (LC_ALL, "");
+	bindtextdomain (PACKAGE, LOCALEDIR);
+	textdomain (PACKAGE);
+
+	/* Parse extra opts if any */
+	argv=np_extra_opts (&argc, argv, progname);
+
+	if (process_arguments (argc, argv) == ERROR)
+		usage_va(_("Could not parse arguments"));
+
+	/* Set signal handling and alarm timeout */
+	if (signal (SIGALRM, timeout_alarm_handler) == SIG_ERR) {
+		usage_va(_("Cannot catch SIGALRM"));
+	}
+
+	/* handle timeouts gracefully... */
+	alarm (timeout_interval);
+
+	/* open the status log */
+	fp = fopen (status_log, "r");
+	if (fp == NULL) {
+		die (STATE_CRITICAL, "NAGIOS %s: %s\n", _("CRITICAL"), _("Cannot open status log for reading!"));
+	}
+
+	/* get the date/time of the last item updated in the log */
+	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
+		if ((temp_ptr = strstr (input_buffer, "created=")) != NULL) {
+			temp_entry_time = strtoul (temp_ptr + 8, NULL, 10);
+			latest_entry_time = temp_entry_time;
+			break;
+		} else if ((temp_ptr = strtok (input_buffer, "]")) != NULL) {
+			temp_entry_time = strtoul (temp_ptr + 1, NULL, 10);
+			if (temp_entry_time > latest_entry_time)
+				latest_entry_time = temp_entry_time;
+		}
+	}
+	fclose (fp);
+
+	if (verbose >= 2)
+		printf("command: %s\n", PS_COMMAND);
+
+	/* run the command to check for the Nagios process.. */
+	if((result = np_runcmd(PS_COMMAND, &chld_out, &chld_err, 0)) != 0)
+		result = STATE_WARNING;
+
+	/* count the number of matching Nagios processes... */
+	for(i = 0; i < chld_out.lines; i++) {
+		cols = sscanf (chld_out.line[i], PS_FORMAT, PS_VARLIST);
+		/* Zombie processes do not give a procprog command */
+		if ( cols == (expected_cols - 1) && strstr(procstat, zombie) ) {
+			cols = expected_cols;
+			/* Set some value for procargs for the strip command further below
+			 * Seen to be a problem on some Solaris 7 and 8 systems */
+			chld_out.line[i][pos] = '\n';
+			chld_out.line[i][pos+1] = 0x0;
+		}
+		if ( cols >= expected_cols ) {
+			xasprintf (&procargs, "%s", chld_out.line[i] + pos);
+			strip (procargs);
+
+			/* Some ps return full pathname for command. This removes path */
+			temp_string = strtok ((char *)procprog, "/");
+			while (temp_string) {
+				strcpy(procprog, temp_string);
+				temp_string = strtok (NULL, "/");
+			}
+
+			/* May get empty procargs */
+			if (!strstr(procargs, argv[0]) && strstr(procargs, process_string) && strcmp(procargs,"")) {
+				proc_entries++;
+				if (verbose >= 2) {
+					printf (_("Found process: %s %s\n"), procprog, procargs);
+				}
+			}
+		}
+	}
+
+	/* If we get anything on stderr, at least set warning */
+	if(chld_err.buflen)
+		result = max_state (result, STATE_WARNING);
+
+	/* reset the alarm handler */
+	alarm (0);
+
+	if (proc_entries == 0) {
+		die (STATE_CRITICAL, "NAGIOS %s: %s\n", _("CRITICAL"), _("Could not locate a running Nagios process!"));
+	}
+
+	if (latest_entry_time == 0L) {
+		die (STATE_CRITICAL, "NAGIOS %s: %s\n", _("CRITICAL"), _("Cannot parse Nagios log file for valid time"));
+	}
+
+	time (&current_time);
+	if ((int)(current_time - latest_entry_time) > (expire_minutes * 60)) {
+		result = STATE_WARNING;
+	} else {
+		result = STATE_OK;
+	}
+
+	printf ("NAGIOS %s: ", (result == STATE_OK) ? _("OK") : _("WARNING"));
+	printf (ngettext ("%d process", "%d processes", proc_entries), proc_entries);
+	printf (", ");
+	printf (
+	  ngettext ("status log updated %d second ago",
+	    "status log updated %d seconds ago",
+	    (int) (current_time - latest_entry_time) ),
+	    (int) (current_time - latest_entry_time) );
+	printf ("\n");
+
+	return result;
+}
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+	int c;
+
+	int option = 0;
+	static struct option longopts[] = {
+		{"filename", required_argument, 0, 'F'},
+		{"expires", required_argument, 0, 'e'},
+		{"command", required_argument, 0, 'C'},
+		{"timeout", optional_argument, 0, 't'},
+		{"version", no_argument, 0, 'V'},
+		{"help", no_argument, 0, 'h'},
+		{"verbose", no_argument, 0, 'v'},
+		{0, 0, 0, 0}
+	};
+
+	if (argc < 2)
+		return ERROR;
+
+	if (!is_option (argv[1])) {
+		status_log = argv[1];
+		if (is_intnonneg (argv[2]))
+			expire_minutes = atoi (argv[2]);
+		else
+			die (STATE_UNKNOWN,
+								 _("Expiration time must be an integer (seconds)\n"));
+		process_string = argv[3];
+		return OK;
+	}
+
+	while (1) {
+		c = getopt_long (argc, argv, "+hVvF:C:e:t:", longopts, &option);
+
+		if (c == -1 || c == EOF || c == 1)
+			break;
+
+		switch (c) {
+		case 'h':									/* help */
+			print_help ();
+			exit (STATE_UNKNOWN);
+		case 'V':									/* version */
+			print_revision (progname, NP_VERSION);
+			exit (STATE_UNKNOWN);
+		case 'F':									/* status log */
+			status_log = optarg;
+			break;
+		case 'C':									/* command */
+			process_string = optarg;
+			break;
+		case 'e':									/* expiry time */
+			if (is_intnonneg (optarg))
+				expire_minutes = atoi (optarg);
+			else
+				die (STATE_UNKNOWN,
+				     _("Expiration time must be an integer (seconds)\n"));
+			break;
+		case 't':									/* timeout */
+			if (is_intnonneg (optarg))
+				timeout_interval = atoi (optarg);
+			else
+				die (STATE_UNKNOWN,
+				     _("Timeout must be an integer (seconds)\n"));
+			break;
+		case 'v':
+			verbose++;
+			break;
+		default:									/* print short usage_va statement if args not parsable */
+			usage5();
+		}
+	}
+
+
+	if (status_log == NULL)
+		die (STATE_UNKNOWN, _("You must provide the status_log\n"));
+
+	if (process_string == NULL)
+		die (STATE_UNKNOWN, _("You must provide a process string\n"));
+
+	return OK;
+}
+
+
+
+void
+print_help (void)
+{
+	print_revision (progname, NP_VERSION);
+
+	printf (_(COPYRIGHT), copyright, email);
+
+	printf ("%s\n", _("This plugin checks the status of the Nagios process on the local machine"));
+  printf ("%s\n", _("The plugin will check to make sure the Nagios status log is no older than"));
+  printf ("%s\n", _("the number of minutes specified by the expires option."));
+  printf ("%s\n", _("It also checks the process table for a process matching the command argument."));
+
+  printf ("\n\n");
+
+	print_usage ();
+
+	printf (UT_HELP_VRSN);
+	printf (UT_EXTRA_OPTS);
+
+	printf (" %s\n", "-F, --filename=FILE");
+  printf ("    %s\n", _("Name of the log file to check"));
+  printf (" %s\n", "-e, --expires=INTEGER");
+  printf ("    %s\n", _("Minutes aging after which logfile is considered stale"));
+  printf (" %s\n", "-C, --command=STRING");
+  printf ("    %s\n", _("Substring to search for in process arguments"));
+  printf (" %s\n", "-t, --timeout=INTEGER");
+  printf ("    %s\n", _("Timeout for the plugin in seconds"));
+  printf (UT_VERBOSE);
+
+  printf ("\n");
+  printf ("%s\n", _("Examples:"));
+  printf (" %s\n", "check_nagios -t 20 -e 5 -F /usr/local/nagios/var/status.log -C /usr/local/nagios/bin/nagios");
+
+  printf (UT_SUPPORT);
+}
+
+
+
+void
+print_usage (void)
+{
+  printf ("%s\n", _("Usage:"));
+	printf ("%s -F <status log file> -t <timeout_seconds> -e <expire_minutes> -C <process_string>\n", progname);
+}