contrib/check_pfstate

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use Getopt::Long;
   5 use vars qw($opt_V $opt_h $opt_P $opt_H $opt_w $opt_c $PROGNAME);
   6 use lib "/usr/local/nagios/libexec"  ;
   7 use utils qw(%ERRORS &print_revision &support &usage);
   8
   9 my $remote_user = "root";
  10 my $path_to_ssh = "/usr/bin/ssh";
  11 my $path_to_grep = "/usr/bin/grep";
  12 my $path_to_awk = "/usr/bin/awk";
  13 my $warn = 50000;
  14 my $crit = 60000;
  15
  16 $PROGNAME = "check_pfstate";
  17 $ENV{'PATH'}='';
  18 $ENV{'BASH_ENV'}='';
  19 $ENV{'ENV'}='';
  20
  21 Getopt::Long::Configure('bundling');
  22 GetOptions
  23         ("V"   => \$opt_V, "version"    => \$opt_V,
  24          "h"   => \$opt_h, "help"       => \$opt_h,
  25          "H=s" => \$opt_H, "hostname=s" => \$opt_H,
  26          "w=s" => \$opt_w, "warning=s"  => \$opt_w,
  27          "c=s" => \$opt_c, "critical=s" => \$opt_c);
  28
  29 if ($opt_V) {
  30         print_revision($PROGNAME,'$Revision: 1112 $');
  31         exit $ERRORS{'OK'};
  32 }
  33 if ($opt_h) {
  34         print_help();
  35         exit $ERRORS{'OK'};
  36 }
  37 if ($opt_w) {
  38         if ($opt_w =~ /(\d+)/) {
  39                 $warn = $1;
  40         } else {
  41                 usage("Invalid values: $opt_w\n");
  42                 exit $ERRORS{'OK'};
  43         }
  44 }
  45 if ($opt_c) {
  46         if ($opt_c =~ /(\d+)/) {
  47                 $crit = $1;
  48         } else {
  49                 usage("Invalid values: $opt_c\n");
  50                 exit $ERRORS{'OK'};
  51         }
  52 }
  53 ($opt_H) || usage("Host name/address not specified\n");
  54 my $host = $1 if ($opt_H =~ /([-.A-Za-z0-9]+)/);
  55 ($host) || usage("Invalid host: $opt_H\n");
  56
  57 my $result = `$path_to_ssh -l $remote_user $host '/sbin/pfctl -s info' | $path_to_grep entries`;
  58 chomp $result;
  59 $result =~ /(\d+)/;
  60 $result = $1;
  61
  62 print "$result PF state entries\n";
  63
  64 exit $ERRORS{'CRITICAL'} if ($result >= $crit);
  65 exit $ERRORS{'WARNING'} if ($result >= $warn);
  66 exit $ERRORS{'OK'};
  67
  68
  69 sub print_help {
  70         print_revision($PROGNAME,'$Revision: 1112 $');
  71         print "Copyright (c) 2002 Jason Dixon\n\nThis plugin checks the number of state table entries on a PF-enabled OpenBSD system.\n\n";
  72         print "Usage:\t-H, --hostname=<HOST> [-w, --warning=<WARNING>] [-c, --critical=<CRITICAL>]\n\n\tDefault warning is 50000 and critical is 60000.\n\n";
  73         support();
  74 }
  75