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check_cluster2.c

/*****************************************************************************
 *
 * CHECK_CLUSTER2.C - Host and Service Cluster Plugin for Nagios 2.x
 *
 * Copyright (c) 2000-2004 Ethan Galstad (nagios@nagios.org)
 * License: GPL
 * Last Modified:   03-11-2004
 *
 * License:
 *
 * 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.
 *
 *****************************************************************************/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>

#define OK        0
#define ERROR           -1

#define TRUE            1
#define FALSE           0

#define CHECK_SERVICES  1
#define CHECK_HOSTS     2

#define MAX_INPUT_BUFFER      1024

#define STATE_OK  0
#define STATE_WARNING   1
#define STATE_CRITICAL  2
#define STATE_UNKNOWN   3

int total_services_ok=0;
int total_services_warning=0;
int total_services_unknown=0;
int total_services_critical=0;

int total_hosts_up=0;
int total_hosts_down=0;
int total_hosts_unreachable=0;

int warning_threshold=1;
int critical_threshold=1;

int check_type=CHECK_SERVICES;

char *data_vals=NULL;
char *label=NULL;


int process_arguments(int,char **);



int main(int argc, char **argv){
      char input_buffer[MAX_INPUT_BUFFER];
      char *ptr;
      int data_val;
      int return_code=STATE_OK;
      int error=FALSE;

      if(process_arguments(argc,argv)==ERROR){

            printf("Invalid arguments supplied\n");
            printf("\n");

            printf("Host/Service Cluster Plugin for Nagios 2\n");
            printf("Copyright (c) 2000-2004 Ethan Galstad (nagios@nagios.org)\n");
            printf("Last Modified: 03-11-2004\n");
            printf("License: GPL\n");
            printf("\n");
            printf("Usage: %s (-s | -h) [-l label] [-w threshold] [-c threshold] [-d val1,val2,...,valn]\n",argv[0]);
            printf("\n");
            printf("Options:\n");
            printf("   -s, --service  = Check service cluster status\n");
            printf("   -h, --host     = Check host cluster status\n");
            printf("   -l, --label    = Optional prepended text output (i.e. \"Host cluster\")\n");
            printf("   -w, --warning  = Specifies the number of hosts or services in cluster that must be in\n");
            printf("                    a non-OK state in order to return a WARNING status level\n");
            printf("   -c, --critical = Specifies the number of hosts or services in cluster that must be in\n");
            printf("                    a non-OK state in order to return a CRITICAL status level\n");
            printf("   -d, --data     = The status codes of the hosts or services in the cluster, separated\n");
            printf("                    by commas\n");
            printf("\n");

            return STATE_UNKNOWN;
              }

      /* check the data values */
      for(ptr=strtok(data_vals,",");ptr!=NULL;ptr=strtok(NULL,",")){

            data_val=atoi(ptr);

            if(check_type==CHECK_SERVICES){
                  switch(data_val){
                  case 0:
                        total_services_ok++;
                        break;
                  case 1:
                        total_services_warning++;
                        break;
                  case 2:
                        total_services_critical++;
                        break;
                  case 3:
                        total_services_unknown++;
                        break;
                  default:
                        break;
                          }
                    }
            else{
                  switch(data_val){
                  case 0:
                        total_hosts_up++;
                        break;
                  case 1:
                        total_hosts_down++;
                        break;
                  case 2:
                        total_hosts_unreachable++;
                        break;
                  default:
                        break;
                          }
                    }
              }
      

      /* return the status of the cluster */
      if(check_type==CHECK_SERVICES){
            if((total_services_warning+total_services_unknown+total_services_critical) >= critical_threshold)
                  return_code=STATE_CRITICAL;
            else if((total_services_warning+total_services_unknown+total_services_critical) >= warning_threshold)
                  return_code=STATE_WARNING;
            else
                  return_code=STATE_OK;
            printf("%s %s: %d ok, %d warning, %d unknown, %d critical\n",(label==NULL)?"Service cluster":label,(return_code==STATE_OK)?"ok":"problem",total_services_ok,total_services_warning,total_services_unknown,total_services_critical);
                }
      else{
            if((total_hosts_down+total_hosts_unreachable) >= critical_threshold)
                  return_code=STATE_CRITICAL;
            else if((total_hosts_down+total_hosts_unreachable) >= warning_threshold)
                  return_code=STATE_WARNING;
            else
                  return_code=STATE_OK;
            printf("%s %s: %d up, %d down, %d unreachable\n",(label==NULL)?"Host cluster":label,(return_code==STATE_OK)?"ok":"problem",total_hosts_up,total_hosts_down,total_hosts_unreachable);
                }

      return return_code;
        }



int process_arguments(int argc, char **argv){
      int c;
      int option=0;
      static struct option longopts[]={ 
            {"data",     required_argument,0,'d'},
            {"warning",  required_argument,0,'w'},
            {"critical", required_argument,0,'c'},
            {"label",    required_argument,0,'l'},
            {"host",     no_argument,      0,'h'},
            {"service",  no_argument,      0,'s'},
            {0,0,0,0}
            };

      /* no options were supplied */
      if(argc<2)
            return ERROR;

      while(1){

            c=getopt_long(argc,argv,"hsw:c:d:l:",longopts,&option);

            if(c==-1 || c==EOF || c==1)
                  break;

            switch(c){

            case 'h': /* host cluster */
                  check_type=CHECK_HOSTS;
                  break;

            case 's': /* service cluster */
                  check_type=CHECK_SERVICES;
                  break;

            case 'w': /* warning threshold */
                  warning_threshold=atoi(optarg);
                  break;

            case 'c': /* warning threshold */
                  critical_threshold=atoi(optarg);
                  break;

            case 'd': /* data values */
                  data_vals=(char *)strdup(optarg);
                  break;

            case 'l': /* text label */
                  label=(char *)strdup(optarg);
                  break;

            default:
                  return ERROR;
                  break;
                    }
            }

      if(data_vals==NULL)
            return ERROR;

      return OK;
        }

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