#!/usr/bin/perl -w
use Digest::MD5;

open CONFIGFILE, "<config.ini" or die "I cant open the config file.";
open RESULTS, ">md5TEMP" or die "I cant write the MD5's temp file.";

my $a = 0;
my $b = 0;
my $change=0;
open OLDMD5, "<md5" or die "I cant read the MD5's file.";
#Do the MD5 Dance
while (<CONFIGFILE>) {
        chomp;
        $file = $_;
        open(FILE, $file) or die "Can't open $file";
        binmode(FILE);
        $md5 = Digest::MD5->new;
        while (<FILE>) {
                $md5->add($_);
        }
        close(FILE);
        print RESULTS $md5->b64digest, " ", $file, "\n";
        #print $md5->b64digest, "\n";
        $a=$a+1;
}
close RESULTS;
close CONFIGFILE;
open RESULTS, "<md5TEMP" or die "I cant read the MD5's temp file.";
my @file1 = <RESULTS>;
my @file2 = <OLDMD5>;
close OLDMD5;
#See what's different
while ($a != $b) {
        if ($file1[$b] ne $file2[$b]) {
                print $file1[$b];
                $change=1;
        }
        $b=$b+1;
}
#If they differ, then update the oldMD5 file to the newest one.
$b=0;
if ($change eq 1) {
        open OLDMD5, ">md5" or die "I cant write the MD5's file.";
        while ($a != $b) {
                print OLDMD5 $file1[$b];
                $b=$b+1;
        }
}
close RESULTS;
close OLDMD5;