382 lines
11 KiB
C
382 lines
11 KiB
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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*
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* Description:
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*
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* This file contains the check_mtrgtraf plugin
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*
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* This plugin will check the incoming/outgoing transfer rates of a router
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* switch, etc recorded in an MRTG log.
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*
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*
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* 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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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*
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*
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*****************************************************************************/
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#include "common.h"
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#include "utils.h"
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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";
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int process_arguments (int, char **);
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int validate_arguments (void);
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void print_help(void);
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void print_usage(void);
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char *log_file = NULL;
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int expire_minutes = -1;
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int use_average = TRUE;
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unsigned long incoming_warning_threshold = 0L;
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unsigned long incoming_critical_threshold = 0L;
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unsigned long outgoing_warning_threshold = 0L;
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unsigned long outgoing_critical_threshold = 0L;
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int
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main (int argc, char **argv)
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{
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int result = STATE_OK;
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FILE *fp;
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int line;
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char input_buffer[MAX_INPUT_BUFFER];
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char *temp_buffer;
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time_t current_time;
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char *error_message;
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time_t timestamp = 0L;
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unsigned long average_incoming_rate = 0L;
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unsigned long average_outgoing_rate = 0L;
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unsigned long maximum_incoming_rate = 0L;
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unsigned long maximum_outgoing_rate = 0L;
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unsigned long incoming_rate = 0L;
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unsigned long outgoing_rate = 0L;
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double adjusted_incoming_rate = 0.0;
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double adjusted_outgoing_rate = 0.0;
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char incoming_speed_rating[8];
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char outgoing_speed_rating[8];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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/* Parse extra opts if any */
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argv=np_extra_opts (&argc, argv, progname);
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if (process_arguments (argc, argv) == ERROR)
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usage4 (_("Could not parse arguments"));
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/* open the MRTG log file for reading */
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fp = fopen (log_file, "r");
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if (fp == NULL)
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usage4 (_("Unable to open MRTG log file"));
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line = 0;
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while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
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line++;
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/* skip the first line of the log file */
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if (line == 1)
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continue;
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/* break out of read loop */
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/* if we've passed the number of entries we want to read */
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if (line > 2)
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break;
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/* grab the timestamp */
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temp_buffer = strtok (input_buffer, " ");
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timestamp = strtoul (temp_buffer, NULL, 10);
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/* grab the average incoming transfer rate */
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temp_buffer = strtok (NULL, " ");
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average_incoming_rate = strtoul (temp_buffer, NULL, 10);
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/* grab the average outgoing transfer rate */
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temp_buffer = strtok (NULL, " ");
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average_outgoing_rate = strtoul (temp_buffer, NULL, 10);
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/* grab the maximum incoming transfer rate */
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temp_buffer = strtok (NULL, " ");
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maximum_incoming_rate = strtoul (temp_buffer, NULL, 10);
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/* grab the maximum outgoing transfer rate */
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temp_buffer = strtok (NULL, " ");
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maximum_outgoing_rate = strtoul (temp_buffer, NULL, 10);
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}
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/* close the log file */
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fclose (fp);
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/* if we couldn't read enough data, return an unknown error */
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if (line <= 2)
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usage4 (_("Unable to process MRTG log file"));
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/* make sure the MRTG data isn't too old */
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time (¤t_time);
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if ((expire_minutes > 0) &&
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(current_time - timestamp) > (expire_minutes * 60))
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die (STATE_WARNING, _("MRTG data has expired (%d minutes old)\n"),
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(int) ((current_time - timestamp) / 60));
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/* else check the incoming/outgoing rates */
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if (use_average == TRUE) {
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incoming_rate = average_incoming_rate;
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outgoing_rate = average_outgoing_rate;
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}
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else {
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incoming_rate = maximum_incoming_rate;
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outgoing_rate = maximum_outgoing_rate;
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}
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/* report incoming traffic in Bytes/sec */
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if (incoming_rate < 1024) {
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strcpy (incoming_speed_rating, "B/s");
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adjusted_incoming_rate = (double) incoming_rate;
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}
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/* report incoming traffic in KBytes/sec */
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else if (incoming_rate < (1024 * 1024)) {
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strcpy (incoming_speed_rating, "KB/s");
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adjusted_incoming_rate = (double) (incoming_rate / 1024.0);
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}
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/* report incoming traffic in MBytes/sec */
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else {
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strcpy (incoming_speed_rating, "MB/s");
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adjusted_incoming_rate = (double) (incoming_rate / 1024.0 / 1024.0);
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}
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/* report outgoing traffic in Bytes/sec */
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if (outgoing_rate < 1024) {
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strcpy (outgoing_speed_rating, "B/s");
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adjusted_outgoing_rate = (double) outgoing_rate;
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}
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/* report outgoing traffic in KBytes/sec */
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else if (outgoing_rate < (1024 * 1024)) {
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strcpy (outgoing_speed_rating, "KB/s");
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adjusted_outgoing_rate = (double) (outgoing_rate / 1024.0);
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}
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/* report outgoing traffic in MBytes/sec */
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else {
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strcpy (outgoing_speed_rating, "MB/s");
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adjusted_outgoing_rate = (double) (outgoing_rate / 1024.0 / 1024.0);
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}
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if (incoming_rate > incoming_critical_threshold
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|| outgoing_rate > outgoing_critical_threshold) {
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result = STATE_CRITICAL;
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}
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else if (incoming_rate > incoming_warning_threshold
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|| outgoing_rate > outgoing_warning_threshold) {
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result = STATE_WARNING;
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}
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xasprintf (&error_message, _("%s. In = %0.1f %s, %s. Out = %0.1f %s|%s %s\n"),
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(use_average == TRUE) ? _("Avg") : _("Max"), adjusted_incoming_rate,
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incoming_speed_rating, (use_average == TRUE) ? _("Avg") : _("Max"),
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adjusted_outgoing_rate, outgoing_speed_rating,
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fperfdata("in", adjusted_incoming_rate, incoming_speed_rating,
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(int)incoming_warning_threshold, incoming_warning_threshold,
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(int)incoming_critical_threshold, incoming_critical_threshold,
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TRUE, 0, FALSE, 0),
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fperfdata("out", adjusted_outgoing_rate, outgoing_speed_rating,
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(int)outgoing_warning_threshold, outgoing_warning_threshold,
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(int)outgoing_critical_threshold, outgoing_critical_threshold,
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TRUE, 0, FALSE, 0));
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printf (_("Traffic %s - %s\n"), state_text(result), error_message);
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return result;
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}
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/* process command-line arguments */
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int
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process_arguments (int argc, char **argv)
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{
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int c;
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int option = 0;
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static struct option longopts[] = {
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{"filename", required_argument, 0, 'F'},
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{"expires", required_argument, 0, 'e'},
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{"aggregation", required_argument, 0, 'a'},
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{"critical", required_argument, 0, 'c'},
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{"warning", required_argument, 0, 'w'},
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{"version", no_argument, 0, 'V'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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if (argc < 2)
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return ERROR;
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for (c = 1; c < argc; c++) {
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if (strcmp ("-to", argv[c]) == 0)
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strcpy (argv[c], "-t");
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else if (strcmp ("-wt", argv[c]) == 0)
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strcpy (argv[c], "-w");
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else if (strcmp ("-ct", argv[c]) == 0)
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strcpy (argv[c], "-c");
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}
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while (1) {
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c = getopt_long (argc, argv, "hVF:e:a:c:w:", longopts, &option);
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if (c == -1 || c == EOF)
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break;
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switch (c) {
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case 'F': /* input file */
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log_file = optarg;
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break;
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case 'e': /* expiration time */
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expire_minutes = atoi (optarg);
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break;
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case 'a': /* aggregation (AVE or MAX) */
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if (!strcmp (optarg, "MAX"))
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use_average = FALSE;
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else
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use_average = TRUE;
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break;
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case 'c': /* warning threshold */
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sscanf (optarg, "%lu,%lu", &incoming_critical_threshold,
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&outgoing_critical_threshold);
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break;
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case 'w': /* critical threshold */
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sscanf (optarg, "%lu,%lu", &incoming_warning_threshold,
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&outgoing_warning_threshold);
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break;
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case 'V': /* version */
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print_revision (progname, NP_VERSION);
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exit (STATE_OK);
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case 'h': /* help */
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print_help ();
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exit (STATE_OK);
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case '?': /* help */
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usage5 ();
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}
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}
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c = optind;
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if (argc > c && log_file == NULL) {
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log_file = argv[c++];
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}
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if (argc > c && expire_minutes == -1) {
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expire_minutes = atoi (argv[c++]);
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}
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if (argc > c && strcmp (argv[c], "MAX") == 0) {
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use_average = FALSE;
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c++;
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}
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else if (argc > c && strcmp (argv[c], "AVG") == 0) {
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use_average = TRUE;
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c++;
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}
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if (argc > c && incoming_warning_threshold == 0) {
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incoming_warning_threshold = strtoul (argv[c++], NULL, 10);
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}
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if (argc > c && incoming_critical_threshold == 0) {
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incoming_critical_threshold = strtoul (argv[c++], NULL, 10);
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}
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if (argc > c && outgoing_warning_threshold == 0) {
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outgoing_warning_threshold = strtoul (argv[c++], NULL, 10);
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}
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if (argc > c && outgoing_critical_threshold == 0) {
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outgoing_critical_threshold = strtoul (argv[c++], NULL, 10);
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}
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return validate_arguments ();
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}
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int
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validate_arguments (void)
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{
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return OK;
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}
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void
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print_help (void)
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{
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print_revision (progname, NP_VERSION);
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printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
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printf (COPYRIGHT, copyright, email);
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printf ("%s\n", _("This plugin will check the incoming/outgoing transfer rates of a router,"));
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printf ("%s\n", _("switch, etc recorded in an MRTG log. If the newest log entry is older"));
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printf ("%s\n", _("than <expire_minutes>, a WARNING status is returned. If either the"));
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printf ("%s\n", _("incoming or outgoing rates exceed the <icl> or <ocl> thresholds (in"));
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printf ("%s\n", _("Bytes/sec), a CRITICAL status results. If either of the rates exceed"));
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printf ("%s\n", _("the <iwl> or <owl> thresholds (in Bytes/sec), a WARNING status results."));
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printf ("\n\n");
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print_usage ();
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printf (UT_HELP_VRSN);
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printf (UT_EXTRA_OPTS);
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printf (" %s\n", "-F, --filename=STRING");
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printf (" %s\n", _("File to read log from"));
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printf (" %s\n", "-e, --expires=INTEGER");
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printf (" %s\n", _("Minutes after which log expires"));
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printf (" %s\n", "-a, --aggregation=(AVG|MAX)");
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printf (" %s\n", _("Test average or maximum"));
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printf (" %s\n", "-w, --warning");
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printf (" %s\n", _("Warning threshold pair <incoming>,<outgoing>"));
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printf (" %s\n", "-c, --critical");
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printf (" %s\n", _("Critical threshold pair <incoming>,<outgoing>"));
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printf ("\n");
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printf ("%s\n", _("Notes:"));
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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"));
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printf (" %s\n", _(" plugin probably won't work with much else without modification."));
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printf (" %s\n", _("- The calculated i/o rates are a little off from what MRTG actually"));
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printf (" %s\n", _(" reports. I'm not sure why this is right now, but will look into it"));
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printf (" %s\n", _(" for future enhancements of this plugin."));
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printf (UT_SUPPORT);
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}
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void
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print_usage (void)
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{
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printf (_("Usage"));
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printf (" %s -F <log_file> -a <AVG | MAX> -w <warning_pair>\n",progname);
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printf ("-c <critical_pair> [-e expire_minutes]\n");
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}
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