365 lines
10 KiB
C
365 lines
10 KiB
C
/******************************************************************************
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: check_mrtgtraf.c,v 1.24 2004/12/25 23:17:44 opensides Exp $
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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 *revision = "$Revision: 1.24 $";
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const char *copyright = "1999-2004";
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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_UNKNOWN;
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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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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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asprintf (&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("in", 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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{"logfile", 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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{"variable", required_argument, 0, 'v'},
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{"critical", required_argument, 0, 'c'},
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{"warning", required_argument, 0, 'w'},
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{"verbose", no_argument, 0, 'v'},
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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, revision);
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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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usage2 (_("Unknown argument"), optarg);
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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, revision);
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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 (_("\n\
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This plugin will check the incoming/outgoing transfer rates of a router,\n\
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switch, etc recorded in an MRTG log. If the newest log entry is older\n\
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than <expire_minutes>, a WARNING status is returned. If either the\n\
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incoming or outgoing rates exceed the <icl> or <ocl> thresholds (in\n\
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Bytes/sec), a CRITICAL status results. If either of the rates exceed\n\
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the <iwl> or <owl> thresholds (in Bytes/sec), a WARNING status results.\n\n"));
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print_usage ();
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printf (_(UT_HELP_VRSN));
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printf (_("\
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-F, --filename=STRING\n\
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File to read log from\n\
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-e, --expires=INTEGER\n\
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Minutes after which log expires\n\
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-a, --aggregation=(AVG|MAX)\n\
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Test average or maximum\n\
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-w, --warning\n\
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Warning threshold pair \"<incoming>,<outgoing>\"\n\
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-c, --critical\n\
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Critical threshold pair \"<incoming>,<outgoing>\"\n"));
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printf (_("Notes:\n\
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- MRTG stands for Multi Router Traffic Grapher. It can be downloaded from\n\
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http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html\n\
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- While MRTG can monitor things other than traffic rates, this\n\
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plugin probably won't work with much else without modification.\n\
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- The calculated i/o rates are a little off from what MRTG actually\n\
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reports. I'm not sure why this is right now, but will look into it\n\
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for future enhancements of this plugin.\n"));
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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 ("\
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Usage: %s -F <log_file> -a <AVG | MAX> -v <variable> -w <warning_pair>\n\
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-c <critical_pair> [-e expire_minutes] [-t timeout] [-v]\n", progname);
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}
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