/****************************************************************************** This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 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. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. $Id: check_mrtgtraf.c,v 1.24 2004/12/25 23:17:44 opensides Exp $ ******************************************************************************/ #include "common.h" #include "utils.h" const char *progname = "check_mrtgtraf"; const char *revision = "$Revision: 1.24 $"; const char *copyright = "1999-2004"; 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) { int result = STATE_UNKNOWN; 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]; 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 (¤t_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("in", adjusted_outgoing_rate, outgoing_speed_rating, (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[] = { {"logfile", required_argument, 0, 'F'}, {"expires", required_argument, 0, 'e'}, {"aggregation", required_argument, 0, 'a'}, {"variable", required_argument, 0, 'v'}, {"critical", required_argument, 0, 'c'}, {"warning", required_argument, 0, 'w'}, {"verbose", no_argument, 0, 'v'}, {"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, revision); exit (STATE_OK); case 'h': /* help */ print_help (); exit (STATE_OK); case '?': /* help */ usage2 (_("Unknown argument"), optarg); } } 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, revision); printf ("Copyright (c) 1999 Ethan Galstad \n"); printf (COPYRIGHT, copyright, email); printf (_("\n\ This plugin will check the incoming/outgoing transfer rates of a router,\n\ switch, etc recorded in an MRTG log. If the newest log entry is older\n\ than , a WARNING status is returned. If either the\n\ incoming or outgoing rates exceed the or thresholds (in\n\ Bytes/sec), a CRITICAL status results. If either of the rates exceed\n\ the or thresholds (in Bytes/sec), a WARNING status results.\n\n")); print_usage (); printf (_(UT_HELP_VRSN)); printf (_("\ -F, --filename=STRING\n\ File to read log from\n\ -e, --expires=INTEGER\n\ Minutes after which log expires\n\ -a, --aggregation=(AVG|MAX)\n\ Test average or maximum\n\ -w, --warning\n\ Warning threshold pair \",\"\n\ -c, --critical\n\ Critical threshold pair \",\"\n")); printf (_("Notes:\n\ - MRTG stands for Multi Router Traffic Grapher. It can be downloaded from\n\ http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html\n\ - While MRTG can monitor things other than traffic rates, this\n\ plugin probably won't work with much else without modification.\n\ - The calculated i/o rates are a little off from what MRTG actually\n\ reports. I'm not sure why this is right now, but will look into it\n\ for future enhancements of this plugin.\n")); printf (_(UT_SUPPORT)); } void print_usage (void) { printf ("\ Usage: %s -F -a -v -w \n\ -c [-e expire_minutes] [-t timeout] [-v]\n", progname); }