Initial revision

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

1 files changed, 287 insertions, 0 deletions

diff --git a/plugins/check_vsz.c b/plugins/check_vsz.c
new file mode 100644
index 00000000..c8ca82bd
--- /dev/null
+++ b/plugins/check_vsz.c
@@ -0,0 +1,287 @@
+/******************************************************************************
+ *
+ * CHECK_VSZ.C
+ *
+ * Program: Process plugin for Nagios
+ * License: GPL
+ * Copyright (c) 1999,2000 Karl DeBisschop <kdebiss@alum.mit.edu>
+ *
+ * Last Modified: $Date$
+ *
+ * Description:
+ *
+ * This plugin will check for processes whose total image size exceeds
+ * the warning or critical thresholds given on the command line.   With
+ * no command_name, everything that shows up on ps is evaluated.
+ * Otherwise, only jobs with the command_name given are examined.
+ * This program is particularly useful if you have to run a piece of
+ * commercial software that has a memory leak.  With it you can shut
+ * down and restart the processes whenever the program threatens to
+ * take over your system.
+ *
+ * Modifications:
+ *
+ * 11-18-1999 Karl DeBisschop (kdebiss@alum.mit.edu)
+ *            change to getopt, use print_help
+ * 08-18-1999 Ethan Galstad (nagios@nagios.org)
+ *            Changed code to use common include file
+ *            Changed fclose() to pclose()
+ * 09-09-1999 Ethan Galstad (nagios@nagios.org)
+ *            Changed popen()/pclose() to spopen()/spclose()
+ * 11-18-1999 Karl DeBisschop (kdebiss@alum.mit.edu)
+ *            set STATE_WARNING of stderr written or nonzero status returned
+ *
+ *****************************************************************************/
+
+#include "common.h"
+#include "popen.h"
+#include "utils.h"
+
+int process_arguments (int argc, char **argv);
+int call_getopt (int argc, char **argv);
+void print_help (char *cmd);
+void print_usage (char *cmd);
+
+int warn = -1;
+int crit = -1;
+char *proc = NULL;
+
+int
+main (int argc, char **argv)
+{
+	int len;
+	int result = STATE_OK;
+	int line = 0;
+	int proc_size = -1;
+	char input_buffer[MAX_INPUT_BUFFER];
+	char proc_name[MAX_INPUT_BUFFER];
+	char *message = NULL;
+
+	if (!process_arguments (argc, argv)) {
+		printf ("%s: failure parsing arguments\n", my_basename (argv[0]));
+		print_help (my_basename (argv[0]));
+		return STATE_UNKNOWN;
+	}
+
+	/* run the command */
+	child_process = spopen (VSZ_COMMAND);
+	if (child_process == NULL) {
+		printf ("Unable to open pipe: %s\n", VSZ_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", VSZ_COMMAND);
+
+	message = malloc ((size_t) 1);
+	message[0] = 0;
+	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+
+		line++;
+
+		/* skip the first line */
+		if (line == 1)
+			continue;
+
+		if (sscanf (input_buffer, VSZ_FORMAT, &proc_size, proc_name) == 2) {
+			if (proc == NULL) {
+				if (proc_size > warn) {
+					len = strlen (message) + strlen (proc_name) + 23;
+					message = realloc (message, len);
+					if (message == NULL)
+						terminate (STATE_UNKNOWN,
+											 "check_vsz: could not malloc message (1)");
+					sprintf (message, "%s %s(%d)", message, proc_name, proc_size);
+					result = max (result, STATE_WARNING);
+				}
+				if (proc_size > crit) {
+					result = STATE_CRITICAL;
+				}
+			}
+			else if (strstr (proc_name, proc)) {
+				len = strlen (message) + 21;
+				message = realloc (message, len);
+				if (message == NULL)
+					terminate (STATE_UNKNOWN,
+										 "check_vsz: could not malloc message (2)");
+				sprintf (message, "%s %d", message, proc_size);
+				if (proc_size > warn) {
+					result = max (result, STATE_WARNING);
+				}
+				if (proc_size > crit) {
+					result = STATE_CRITICAL;
+				}
+			}
+		}
+	}
+
+	/* 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);
+
+	(void) fclose (child_stderr);
+
+	/* close the pipe */
+	if (spclose (child_process))
+		result = max (result, STATE_WARNING);
+
+	if (result == STATE_OK)
+		printf ("ok (all VSZ<%d): %s\n", warn, message);
+	else if (result == STATE_UNKNOWN)
+		printf ("Unable to read output\n");
+	else if (result == STATE_WARNING)
+		printf ("WARNING (VSZ>%d):%s\n", warn, message);
+	else
+		printf ("CRITICAL (VSZ>%d):%s\n", crit, message);
+
+	return result;
+}
+
+
+
+
+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 == -1) {
+			if (!is_intnonneg (argv[c])) {
+				printf ("%s: critical threshold must be an integer: %s\n",
+								my_basename (argv[0]), argv[c]);
+				print_usage (my_basename (argv[0]));
+				exit (STATE_UNKNOWN);
+			}
+			warn = atoi (argv[c]);
+		}
+		else if (crit == -1) {
+			if (!is_intnonneg (argv[c])) {
+				printf ("%s: critical threshold must be an integer: %s\n",
+								my_basename (argv[0]), argv[c]);
+				print_usage (my_basename (argv[0]));
+				exit (STATE_UNKNOWN);
+			}
+			crit = atoi (argv[c]);
+		}
+		else if (proc == NULL) {
+			proc = malloc (strlen (argv[c]) + 1);
+			if (proc == NULL)
+				terminate (STATE_UNKNOWN,
+									 "check_vsz: failed malloc of proc in process_arguments");
+			strcpy (proc, argv[c]);
+		}
+	}
+	return c;
+}
+
+int
+call_getopt (int argc, char **argv)
+{
+	int c, i = 1;
+
+#ifdef HAVE_GETOPT_H
+	int option_index = 0;
+	static struct option long_options[] = {
+		{"help", no_argument, 0, 'h'},
+		{"version", no_argument, 0, 'V'},
+		{"critical", required_argument, 0, 'c'},
+		{"warning", required_argument, 0, 'w'},
+		{"command", required_argument, 0, 'C'},
+		{0, 0, 0, 0}
+	};
+#endif
+
+	while (1) {
+#ifdef HAVE_GETOPT_H
+		c = getopt_long (argc, argv, "+hVc:w:C:", long_options, &option_index);
+#else
+		c = getopt (argc, argv, "+hVc:w:C:");
+#endif
+		if (c == EOF)
+			break;
+
+		i++;
+		switch (c) {
+		case 'c':
+		case 'w':
+		case 'C':
+			i++;
+		}
+
+		switch (c) {
+		case '?':									/* help */
+			printf ("%s: Unknown argument: %s\n\n", my_basename (argv[0]), optarg);
+			print_usage (my_basename (argv[0]));
+			exit (STATE_UNKNOWN);
+		case 'h':									/* help */
+			print_help (my_basename (argv[0]));
+			exit (STATE_OK);
+		case 'V':									/* version */
+			print_revision (my_basename (argv[0]), "$Revision$");
+			exit (STATE_OK);
+		case 'c':									/* critical threshold */
+			if (!is_intnonneg (optarg)) {
+				printf ("%s: critical threshold must be an integer: %s\n",
+								my_basename (argv[0]), optarg);
+				print_usage (my_basename (argv[0]));
+				exit (STATE_UNKNOWN);
+			}
+			crit = atoi (optarg);
+			break;
+		case 'w':									/* warning threshold */
+			if (!is_intnonneg (optarg)) {
+				printf ("%s: warning threshold must be an integer: %s\n",
+								my_basename (argv[0]), optarg);
+				print_usage (my_basename (argv[0]));
+				exit (STATE_UNKNOWN);
+			}
+			warn = atoi (optarg);
+			break;
+		case 'C':									/* command name */
+			proc = malloc (strlen (optarg) + 1);
+			if (proc == NULL)
+				terminate (STATE_UNKNOWN,
+									 "check_vsz: failed malloc of proc in process_arguments");
+			strcpy (proc, optarg);
+			break;
+		}
+	}
+	return i;
+}
+
+void
+print_usage (char *cmd)
+{
+	printf ("Usage: %s -w <wsize> -c <csize> [-C command]\n"
+					"       %s --help\n" "       %s --version\n", cmd, cmd, cmd);
+}
+
+void
+print_help (char *cmd)
+{
+	print_revision ("check_vsz", "$Revision$");
+	printf
+		("Copyright (c) 2000 Karl DeBisschop <kdebiss@alum.mit.edu>\n\n"
+		 "This plugin checks the image size of a running program and returns an\n"
+		 "error if the number is above either of the thresholds given.\n\n");
+	print_usage (cmd);
+	printf
+		("\nOptions:\n"
+		 " -h, --help\n"
+		 "    Print detailed help\n"
+		 " -V, --version\n"
+		 "    Print version numbers and license information\n"
+		 " -w, --warning=INTEGER\n"
+		 "    Program image size necessary to cause a WARNING state\n"
+		 " -c, --critical=INTEGER\n"
+		 "    Program image size necessary to cause a CRITICAL state\n"
+		 " -C, --command=STRING\n" "    Program to search for [optional]\n");
+}