contrib/check_arping.pl

   1 #! /usr/bin/perl -w
   2 #
   3 # check_arping.pl - Nagios plugin to check host status via ARP ping
   4 #
   5 # usage:
   6 #     check_arping -H hostname -I interface -T timeout
   7 #
   8 #
   9 # Copyright (C) 2003  Kenny Root
  10 #
  11 # This program is free software; you can redistribute it and/or
  12 # modify it under the terms of the GNU General Public License
  13 # as published by the Free Software Foundation; either version 2
  14 # of the License, or (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program; if not, write to the Free Software
  23 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24 #
  25 #
  26 # Report bugs to: kenny@the-b.org, nagiosplug-help@lists.sf.net
  27
  28 use POSIX;
  29 use strict;
  30 use lib "/usr/lib/nagios/plugins" ;
  31 use utils qw($TIMEOUT %ERRORS &print_revision &support);
  32
  33 use Net::Arping;
  34 use Getopt::Long;
  35
  36 my $PROGNAME = "check_arping";
  37
  38 my($status, $state, $answer);
  39 my($opt_V, $opt_h, $opt_t, $opt_I, $opt_H);
  40
  41
  42 #Option checking
  43 $status = GetOptions(
  44         "V|version"     => \$opt_V,
  45         "help"  => \$opt_h,
  46         "I|interface=s" => \$opt_I,
  47         "H|host=s"      => \$opt_H,
  48         "t|timeout=i"   => \$opt_t);
  49
  50 if ($status == 0)
  51 {
  52         print_help() ;
  53         exit $ERRORS{'OK'};
  54 }
  55
  56
  57 if ($opt_V) {
  58         print_revision($PROGNAME,'$Revision: 1112 $ ');
  59         exit $ERRORS{'OK'};
  60 }
  61
  62 if ($opt_h) {
  63         print_help();
  64         exit $ERRORS{'OK'};
  65 }
  66
  67 if ($opt_t) {
  68         if ($opt_t ne int($opt_t)) {
  69                 print "Timeout not in seconds!\n";
  70                 print_help();
  71                 exit $ERRORS{'OK'};
  72         }
  73         $opt_t = int($opt_t);
  74 } else {
  75         $opt_t = 3;
  76 }
  77
  78 if (! utils::is_hostname($opt_H)){
  79         usage();
  80         exit $ERRORS{"UNKNOWN"};
  81 }
  82
  83 my $ping = Net::Arping->new();
  84
  85 my $reply = $ping->arping(Host => $opt_H, Interface => $opt_I, Timeout => $opt_t);
  86
  87 if ($reply eq "0") {
  88         $state = "CRITICAL";
  89         print "$state: no reply from $opt_H on interface $opt_I in $opt_t seconds.\n";
  90         exit $ERRORS{$state};
  91 } else {
  92         $state = "OK";
  93         $answer = "replied with MAC address $reply";
  94 }
  95
  96 print "ARPING $state - $answer\n";
  97 exit $ERRORS{$state};
  98
  99
 100 sub usage {
 101         print "\nMissing arguments!\n";
 102         print "\n";
 103         print "check_arping -I <interface> -H <host IP> [-t <timeout>]\n";
 104         print "\n\n";
 105         support();
 106         exit $ERRORS{"UNKNOWN"};
 107 }
 108
 109 sub print_help {
 110         print "check_arping pings hosts that normally wouldn't allow\n";
 111         print "ICMP packets but are still on the local network.\n";
 112         print "\nUsage:\n";
 113         print "   -H (--host)       IP to query - (required)\n";
 114         print "   -I (--interface)  Interface to use.\n";
 115         print "   -t (--timeout)    Timeout in seconds.\n";
 116         print "   -V (--version)    Plugin version\n";
 117         print "   -h (--help)       usage help \n\n";
 118         print_revision($PROGNAME, '$Revision: 1112 $');
 119
 120 }