Modifying perl file check_file_age.pl

#! /usr/bin/perl -w
# $Id: check_file_age.pl 1750 2007-07-07 11:54:29Z psychotrahe $
 
# check_file_age.pl Copyright (C) 2003 Steven Grimm <koreth-nagios@midwinter.com>
#
# Checks a file's size and modification time to make sure it's not empty
# and that it's sufficiently recent.
#
#
# 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 (or with Nagios);  if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA
 
use strict;
use English;
use Getopt::Long;
use File::stat;
use vars qw($PROGNAME);
use lib "/usr/local/nagios/libexec" ;
use utils qw (%ERRORS &print_revision &support);
 
sub print_help ();
sub print_usage ();
 
my ($opt_c, $opt_f, $opt_w, $opt_C, $opt_W, $opt_h, $opt_V);
my ($result, $message, $age, $size, $st);
 
$PROGNAME="check_file_age";
 
$opt_w = 240;
$opt_c = 600;
$opt_W = 0;
$opt_C = 0;
$opt_f = "";
 
Getopt::Long::Configure('bundling');
GetOptions(
        "V"   => \$opt_V, "version"     => \$opt_V,
        "h"   => \$opt_h, "help"        => \$opt_h,
        "f=s" => \$opt_f, "file"        => \$opt_f,
        "w=f" => \$opt_w, "warning-age=f" => \$opt_w,
        "W=f" => \$opt_W, "warning-size=f" => \$opt_W,
        "c=f" => \$opt_c, "critical-age=f" => \$opt_c,
        "C=f" => \$opt_C, "critical-size=f" => \$opt_C);
 
if ($opt_V) {
        print_revision($PROGNAME, '$Revision: 1750 $');
        exit $ERRORS{'OK'};
}
 
if ($opt_h) {
        print_help();
        exit $ERRORS{'OK'};
}
 
$opt_f = shift unless ($opt_f);
 
if (! $opt_f) {
        print "FILE_AGE UNKNOWN: No file specified\n";
        exit $ERRORS{'UNKNOWN'};
}
 
# Check that file exists (can be directory or link)
unless (-e $opt_f) {
        print "FILE_AGE CRITICAL: File not found - $opt_f\n";
        exit $ERRORS{'CRITICAL'};
}
 
$st = File::stat::stat($opt_f);
$age = time - $st->mtime;
$size = $st->size;
 
 
$result = 'OK';
 
if (($opt_c and $age > $opt_c) or ($opt_C and $size < $opt_C)) {
        $result = 'CRITICAL';
}
elsif (($opt_w and $age > $opt_w) or ($opt_W and $size < $opt_W)) {
        $result = 'WARNING';
}
 
print "FILE_AGE $result: $opt_f is $age seconds old and $size bytes\n";
exit $ERRORS{$result};
 
sub print_usage () {
        print "Usage:\n";
        print "  $PROGNAME [-w <secs>] [-c <secs>] [-W <size>] [-C <size>] -f <file>\n";
        print "  $PROGNAME [-h | --help]\n";
        print "  $PROGNAME [-V | --version]\n";
}
 
sub print_help () {
        print_revision($PROGNAME, '$Revision: 1750 $');
        print "Copyright (c) 2003 Steven Grimm\n\n";
        print_usage();
        print "\n";
        print "  <secs>  File must be no more than this many seconds old (default: warn 240 secs, crit 600)\n";
        print "  <size>  File must be at least this many bytes long (default: crit 0 bytes)\n";
        print "\n";
        support();
}

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