pkg-monitoring-plugins/plugins/check_mrtgtraf.c

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/*****************************************************************************
*
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* Nagios check_mrtgtraf plugin
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*
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* License: GPL
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* Copyright (c) 1999-2007 Nagios Plugins Development Team
*
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* Description:
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*
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* This file contains the check_mtrgtraf plugin
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*
* This plugin will check the incoming/outgoing transfer rates of a router
* switch, etc recorded in an MRTG log.
*
*
* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* 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.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
*****************************************************************************/
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#include "common.h"
#include "utils.h"
const char *progname = "check_mrtgtraf";
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const char *copyright = "1999-2007";
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const char *email = "nagiosplug-devel@lists.sourceforge.net";
int process_arguments (int, char **);
int validate_arguments (void);
void print_help(void);
void print_usage(void);
char *log_file = NULL;
int expire_minutes = -1;
int use_average = TRUE;
unsigned long incoming_warning_threshold = 0L;
unsigned long incoming_critical_threshold = 0L;
unsigned long outgoing_warning_threshold = 0L;
unsigned long outgoing_critical_threshold = 0L;
int
main (int argc, char **argv)
{
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int result = STATE_OK;
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FILE *fp;
int line;
char input_buffer[MAX_INPUT_BUFFER];
char *temp_buffer;
time_t current_time;
char *error_message;
time_t timestamp = 0L;
unsigned long average_incoming_rate = 0L;
unsigned long average_outgoing_rate = 0L;
unsigned long maximum_incoming_rate = 0L;
unsigned long maximum_outgoing_rate = 0L;
unsigned long incoming_rate = 0L;
unsigned long outgoing_rate = 0L;
double adjusted_incoming_rate = 0.0;
double adjusted_outgoing_rate = 0.0;
char incoming_speed_rating[8];
char outgoing_speed_rating[8];
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setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
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/* Parse extra opts if any */
argv=np_extra_opts (&argc, argv, progname);
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if (process_arguments (argc, argv) == ERROR)
usage4 (_("Could not parse arguments"));
/* open the MRTG log file for reading */
fp = fopen (log_file, "r");
if (fp == NULL)
usage4 (_("Unable to open MRTG log file"));
line = 0;
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
line++;
/* skip the first line of the log file */
if (line == 1)
continue;
/* break out of read loop */
/* if we've passed the number of entries we want to read */
if (line > 2)
break;
/* grab the timestamp */
temp_buffer = strtok (input_buffer, " ");
timestamp = strtoul (temp_buffer, NULL, 10);
/* grab the average incoming transfer rate */
temp_buffer = strtok (NULL, " ");
average_incoming_rate = strtoul (temp_buffer, NULL, 10);
/* grab the average outgoing transfer rate */
temp_buffer = strtok (NULL, " ");
average_outgoing_rate = strtoul (temp_buffer, NULL, 10);
/* grab the maximum incoming transfer rate */
temp_buffer = strtok (NULL, " ");
maximum_incoming_rate = strtoul (temp_buffer, NULL, 10);
/* grab the maximum outgoing transfer rate */
temp_buffer = strtok (NULL, " ");
maximum_outgoing_rate = strtoul (temp_buffer, NULL, 10);
}
/* close the log file */
fclose (fp);
/* if we couldn't read enough data, return an unknown error */
if (line <= 2)
usage4 (_("Unable to process MRTG log file"));
/* make sure the MRTG data isn't too old */
time (&current_time);
if ((expire_minutes > 0) &&
(current_time - timestamp) > (expire_minutes * 60))
die (STATE_WARNING, _("MRTG data has expired (%d minutes old)\n"),
(int) ((current_time - timestamp) / 60));
/* else check the incoming/outgoing rates */
if (use_average == TRUE) {
incoming_rate = average_incoming_rate;
outgoing_rate = average_outgoing_rate;
}
else {
incoming_rate = maximum_incoming_rate;
outgoing_rate = maximum_outgoing_rate;
}
/* report incoming traffic in Bytes/sec */
if (incoming_rate < 1024) {
strcpy (incoming_speed_rating, "B/s");
adjusted_incoming_rate = (double) incoming_rate;
}
/* report incoming traffic in KBytes/sec */
else if (incoming_rate < (1024 * 1024)) {
strcpy (incoming_speed_rating, "KB/s");
adjusted_incoming_rate = (double) (incoming_rate / 1024.0);
}
/* report incoming traffic in MBytes/sec */
else {
strcpy (incoming_speed_rating, "MB/s");
adjusted_incoming_rate = (double) (incoming_rate / 1024.0 / 1024.0);
}
/* report outgoing traffic in Bytes/sec */
if (outgoing_rate < 1024) {
strcpy (outgoing_speed_rating, "B/s");
adjusted_outgoing_rate = (double) outgoing_rate;
}
/* report outgoing traffic in KBytes/sec */
else if (outgoing_rate < (1024 * 1024)) {
strcpy (outgoing_speed_rating, "KB/s");
adjusted_outgoing_rate = (double) (outgoing_rate / 1024.0);
}
/* report outgoing traffic in MBytes/sec */
else {
strcpy (outgoing_speed_rating, "MB/s");
adjusted_outgoing_rate = (double) (outgoing_rate / 1024.0 / 1024.0);
}
if (incoming_rate > incoming_critical_threshold
|| outgoing_rate > outgoing_critical_threshold) {
result = STATE_CRITICAL;
}
else if (incoming_rate > incoming_warning_threshold
|| outgoing_rate > outgoing_warning_threshold) {
result = STATE_WARNING;
}
asprintf (&error_message, _("%s. In = %0.1f %s, %s. Out = %0.1f %s|%s %s\n"),
(use_average == TRUE) ? _("Avg") : _("Max"), adjusted_incoming_rate,
incoming_speed_rating, (use_average == TRUE) ? _("Avg") : _("Max"),
adjusted_outgoing_rate, outgoing_speed_rating,
fperfdata("in", adjusted_incoming_rate, incoming_speed_rating,
(int)incoming_warning_threshold, incoming_warning_threshold,
(int)incoming_critical_threshold, incoming_critical_threshold,
TRUE, 0, FALSE, 0),
fperfdata("out", adjusted_outgoing_rate, outgoing_speed_rating,
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(int)outgoing_warning_threshold, outgoing_warning_threshold,
(int)outgoing_critical_threshold, outgoing_critical_threshold,
TRUE, 0, FALSE, 0));
printf (_("Traffic %s - %s\n"), state_text(result), error_message);
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'},
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{"expires", required_argument, 0, 'e'},
{"aggregation", required_argument, 0, 'a'},
{"critical", required_argument, 0, 'c'},
{"warning", required_argument, 0, 'w'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
if (argc < 2)
return ERROR;
for (c = 1; c < argc; c++) {
if (strcmp ("-to", argv[c]) == 0)
strcpy (argv[c], "-t");
else if (strcmp ("-wt", argv[c]) == 0)
strcpy (argv[c], "-w");
else if (strcmp ("-ct", argv[c]) == 0)
strcpy (argv[c], "-c");
}
while (1) {
c = getopt_long (argc, argv, "hVF:e:a:c:w:", longopts, &option);
if (c == -1 || c == EOF)
break;
switch (c) {
case 'F': /* input file */
log_file = optarg;
break;
case 'e': /* expiration time */
expire_minutes = atoi (optarg);
break;
case 'a': /* aggregation (AVE or MAX) */
if (!strcmp (optarg, "MAX"))
use_average = FALSE;
else
use_average = TRUE;
break;
case 'c': /* warning threshold */
sscanf (optarg, "%lu,%lu", &incoming_critical_threshold,
&outgoing_critical_threshold);
break;
case 'w': /* critical threshold */
sscanf (optarg, "%lu,%lu", &incoming_warning_threshold,
&outgoing_warning_threshold);
break;
case 'V': /* version */
print_revision (progname, NP_VERSION);
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exit (STATE_OK);
case 'h': /* help */
print_help ();
exit (STATE_OK);
case '?': /* help */
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usage5 ();
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}
}
c = optind;
if (argc > c && log_file == NULL) {
log_file = argv[c++];
}
if (argc > c && expire_minutes == -1) {
expire_minutes = atoi (argv[c++]);
}
if (argc > c && strcmp (argv[c], "MAX") == 0) {
use_average = FALSE;
c++;
}
else if (argc > c && strcmp (argv[c], "AVG") == 0) {
use_average = TRUE;
c++;
}
if (argc > c && incoming_warning_threshold == 0) {
incoming_warning_threshold = strtoul (argv[c++], NULL, 10);
}
if (argc > c && incoming_critical_threshold == 0) {
incoming_critical_threshold = strtoul (argv[c++], NULL, 10);
}
if (argc > c && outgoing_warning_threshold == 0) {
outgoing_warning_threshold = strtoul (argv[c++], NULL, 10);
}
if (argc > c && outgoing_critical_threshold == 0) {
outgoing_critical_threshold = strtoul (argv[c++], NULL, 10);
}
return validate_arguments ();
}
int
validate_arguments (void)
{
return OK;
}
void
print_help (void)
{
print_revision (progname, NP_VERSION);
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printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
printf (COPYRIGHT, copyright, email);
printf ("%s\n", _("This plugin will check the incoming/outgoing transfer rates of a router,"));
printf ("%s\n", _("switch, etc recorded in an MRTG log. If the newest log entry is older"));
printf ("%s\n", _("than <expire_minutes>, a WARNING status is returned. If either the"));
printf ("%s\n", _("incoming or outgoing rates exceed the <icl> or <ocl> thresholds (in"));
printf ("%s\n", _("Bytes/sec), a CRITICAL status results. If either of the rates exceed"));
printf ("%s\n", _("the <iwl> or <owl> thresholds (in Bytes/sec), a WARNING status results."));
printf ("\n\n");
print_usage ();
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printf (UT_HELP_VRSN);
printf (UT_EXTRA_OPTS);
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printf (" %s\n", "-F, --filename=STRING");
printf (" %s\n", _("File to read log from"));
printf (" %s\n", "-e, --expires=INTEGER");
printf (" %s\n", _("Minutes after which log expires"));
printf (" %s\n", "-a, --aggregation=(AVG|MAX)");
printf (" %s\n", _("Test average or maximum"));
printf (" %s\n", "-w, --warning");
printf (" %s\n", _("Warning threshold pair <incoming>,<outgoing>"));
printf (" %s\n", "-c, --critical");
printf (" %s\n", _("Critical threshold pair <incoming>,<outgoing>"));
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printf ("\n");
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printf ("%s\n", _("Notes:"));
printf (" %s\n", _("- MRTG stands for Multi Router Traffic Grapher. It can be downloaded from"));
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printf (" %s\n", " http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html");
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printf (" %s\n", _("- While MRTG can monitor things other than traffic rates, this"));
printf (" %s\n", _(" plugin probably won't work with much else without modification."));
printf (" %s\n", _("- The calculated i/o rates are a little off from what MRTG actually"));
printf (" %s\n", _(" reports. I'm not sure why this is right now, but will look into it"));
printf (" %s\n", _(" for future enhancements of this plugin."));
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printf (UT_SUPPORT);
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}
void
print_usage (void)
{
printf (_("Usage"));
printf (" %s -F <log_file> -a <AVG | MAX> -w <warning_pair>\n",progname);
printf ("-c <critical_pair> [-e expire_minutes]\n");
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}