Initial revision

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 325 insertions, 0 deletions

diff --git a/plugins/check_swap.c b/plugins/check_swap.c
new file mode 100644
index 00000000..d225e1dc
--- /dev/null
+++ b/plugins/check_swap.c
@@ -0,0 +1,325 @@
+/******************************************************************************
+*
+* CHECK_SWAP.C
+*
+* Program: Process plugin for Nagios
+* License: GPL
+* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
+*
+* $Id$
+*
+******************************************************************************/
+
+#include "common.h"
+#include "popen.h"
+#include "utils.h"
+
+#define PROGNAME "check_swap"
+
+int process_arguments (int argc, char **argv);
+int call_getopt (int argc, char **argv);
+int validate_arguments (void);
+void print_usage (void);
+void print_help (void);
+
+int warn_percent = 200, crit_percent = 200, warn_size = -1, crit_size = -1;
+
+int
+main (int argc, char **argv)
+{
+	int total_swap, used_swap, free_swap, percent_used;
+	int result = STATE_OK;
+	char input_buffer[MAX_INPUT_BUFFER];
+#ifdef HAVE_SWAP
+	char *temp_buffer;
+#endif
+#ifdef HAVE_PROC_MEMINFO
+	FILE *fp;
+#endif
+	char str[32];
+	char *status = NULL;
+
+	if (process_arguments (argc, argv) != OK)
+		usage ("Invalid command arguments supplied\n");
+
+#ifdef HAVE_PROC_MEMINFO
+	fp = fopen (PROC_MEMINFO, "r");
+	status = ssprintf (status, "%s", "Swap used:");
+	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
+		sscanf (input_buffer, " %s %d %d %d", str, &total_swap, &used_swap,
+						&free_swap);
+		if (strstr (str, "Swap")) {
+			percent_used = 100 * (((float) used_swap) / ((float) total_swap));
+			status = ssprintf
+				(status,
+				 "%s %2d%% (%d bytes out of %d)",
+				 status, percent_used, used_swap, total_swap);
+			if (percent_used >= crit_percent || free_swap <= crit_size)
+				result = STATE_CRITICAL;
+			else if (percent_used >= warn_percent || free_swap <= warn_size)
+				result = STATE_WARNING;
+			break;
+		}
+	}
+	fclose (fp);
+#else
+#ifdef HAVE_SWAP
+	child_process = spopen (SWAP_COMMAND);
+	if (child_process == NULL) {
+		printf ("Could not open pipe: %s\n", SWAP_COMMAND);
+		return STATE_UNKNOWN;
+	}
+
+	child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
+	if (child_stderr == NULL)
+		printf ("Could not open stderr for %s\n", SWAP_COMMAND);
+
+	sprintf (str, "%s", "");
+	/* read 1st line */
+	fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
+	if (strcmp (SWAP_FORMAT, "") == 0) {
+		temp_buffer = strtok (input_buffer, " \n");
+		while (temp_buffer) {
+			if (strstr (temp_buffer, "blocks"))
+				sprintf (str, "%s %s", str, "%f");
+			else if (strstr (temp_buffer, "free"))
+				sprintf (str, "%s %s", str, "%f");
+			else
+				sprintf (str, "%s %s", str, "%*s");
+			temp_buffer = strtok (NULL, " \n");
+		}
+	}
+
+	status = ssprintf (status, "%s", "Swap used:");
+	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+		sscanf (input_buffer, SWAP_FORMAT, &total_swap, &free_swap);
+		used_swap = total_swap - free_swap;
+		percent_used = 100 * ((float) used_swap) / ((float) total_swap);
+		status = ssprintf
+			(status,
+			 "%s %2d%% (%d bytes out of %d)",
+			 status, percent_used, used_swap, total_swap);
+		if (percent_used >= crit_percent || free_swap <= crit_size)
+			result = STATE_CRITICAL;
+		else if (percent_used >= warn_percent || free_swap <= warn_size)
+			result = STATE_WARNING;
+	}
+
+	/* If we get anything on STDERR, at least set warning */
+	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
+		result = max (result, STATE_WARNING);
+
+	/* close stderr */
+	(void) fclose (child_stderr);
+
+	/* close the pipe */
+	if (spclose (child_process))
+		result = max (result, STATE_WARNING);
+#endif
+#endif
+
+#ifndef SWAP_COMMAND
+#ifndef SWAP_FILE
+#ifndef HAVE_PROC_MEMINFO
+	return STATE_UNKNOWN;
+#endif
+#endif
+#endif
+
+	if (result == STATE_OK)
+		printf ("Swap ok - %s\n", status);
+	else if (result == STATE_CRITICAL)
+		printf ("CRITICAL - %s\n", status);
+	else if (result == STATE_WARNING)
+		printf ("WARNING - %s\n", status);
+	else if (result == STATE_UNKNOWN)
+		printf ("Unable to read output\n");
+	else {
+		result = STATE_UNKNOWN;
+		printf ("UNKNOWN - %s\n", status);
+	}
+
+	return result;
+}
+
+
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+	int c;
+
+	if (argc < 2)
+		return ERROR;
+
+	c = 0;
+	while (c += (call_getopt (argc - c, &argv[c]))) {
+		if (argc <= c)
+			break;
+
+		if (warn_percent > 100 && is_intnonneg (argv[c]))
+			warn_percent = atoi (argv[c]);
+		else if (crit_percent > 100 && is_intnonneg (argv[c]))
+			crit_percent = atoi (argv[c]);
+		else if (warn_size < 0 && is_intnonneg (argv[c]))
+			warn_size = atoi (argv[c]);
+		else if (crit_size < 0 && is_intnonneg (argv[c]))
+			crit_size = atoi (argv[c]);
+	}
+
+	return validate_arguments ();
+}
+
+
+
+
+
+int
+call_getopt (int argc, char **argv)
+{
+	int c, i = 0;
+
+#ifdef HAVE_GETOPT_H
+	int option_index = 0;
+	static struct option long_options[] = {
+		{"warning", required_argument, 0, 'w'},
+		{"critical", required_argument, 0, 'c'},
+		{"verbose", no_argument, 0, 'v'},
+		{"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, "+?Vhc:w:", long_options, &option_index);
+#else
+		c = getopt (argc, argv, "+?Vhc:w:");
+#endif
+
+		i++;
+
+		if (c == -1 || c == EOF)
+			break;
+
+		switch (c) {
+		case 'c':
+		case 'w':
+			i++;
+		}
+
+		switch (c) {
+		case 'w':									/* warning time threshold */
+			if (is_intnonneg (optarg)) {
+				warn_size = atoi (optarg);
+				break;
+			}
+			else if (strstr (optarg, ",") &&
+							 strstr (optarg, "%") &&
+							 sscanf (optarg, "%d,%d%%", &warn_size, &warn_percent) == 2) {
+				break;
+			}
+			else if (strstr (optarg, "%") &&
+							 sscanf (optarg, "%d%%", &warn_percent) == 1) {
+				break;
+			}
+			else {
+				usage ("Warning threshold must be integer or percentage!\n");
+			}
+		case 'c':									/* critical time threshold */
+			if (is_intnonneg (optarg)) {
+				crit_size = atoi (optarg);
+				break;
+			}
+			else if (strstr (optarg, ",") &&
+							 strstr (optarg, "%") &&
+							 sscanf (optarg, "%d,%d%%", &crit_size, &crit_percent) == 2) {
+				break;
+			}
+			else if (strstr (optarg, "%") &&
+							 sscanf (optarg, "%d%%", &crit_percent) == 1) {
+				break;
+			}
+			else {
+				usage ("Critical threshold must be integer or percentage!\n");
+			}
+		case 'V':									/* version */
+			print_revision (my_basename (argv[0]), "$Revision$");
+			exit (STATE_OK);
+		case 'h':									/* help */
+			print_help ();
+			exit (STATE_OK);
+		case '?':									/* help */
+			usage ("Invalid argument\n");
+		}
+	}
+	return i;
+}
+
+
+
+
+
+int
+validate_arguments (void)
+{
+	if (warn_percent > 100 && crit_percent > 100 && warn_size < 0
+			&& crit_size < 0) {
+		return ERROR;
+	}
+	else if (warn_percent > crit_percent) {
+		usage
+			("Warning percentage should not be less than critical percentage\n");
+	}
+	else if (warn_size < crit_size) {
+		usage
+			("Warning free space should not be more than critical free space\n");
+	}
+	return OK;
+}
+
+
+
+
+
+void
+print_usage (void)
+{
+	printf
+		("Usage: check_swap -w <used_percentage>%% -c <used_percentage>%%\n"
+		 "       check_swap -w <bytes_free> -c <bytes_free>\n"
+		 "       check_swap (-V|--version)\n" "       check_swap (-h|--help)\n");
+}
+
+
+
+
+
+void
+print_help (void)
+{
+	print_revision (PROGNAME, "$Revision$");
+	printf
+		("Copyright (c) 2000 Karl DeBisschop\n\n"
+		 "This plugin will check all of the swap partitions and return an\n"
+		 "error if the the avalable swap space is less than specified.\n\n");
+	print_usage ();
+	printf
+		("\nOptions:\n"
+		 " -w, --warning=INTEGER\n"
+		 "   Exit with WARNING status if less than INTEGER bytes of swap space are free\n"
+		 " -w, --warning=PERCENT%%\n"
+		 "   Exit with WARNING status if more than PERCENT of swap space has been used\n"
+		 " -c, --critical=INTEGER\n"
+		 "   Exit with CRITICAL status if less than INTEGER bytes of swap space are free\n"
+		 " -c, --critical=PERCENT%%\n"
+		 "   Exit with CRITCAL status if more than PERCENT of swap space has been used\n"
+		 " -h, --help\n"
+		 "    Print detailed help screen\n"
+		 " -V, --version\n" "    Print version information\n\n");
+	support ();
+}