Re^4: Inserting domain name into Snort rule

[miniperl]

in reply to Re^3: Inserting domain name into Snort rule
in thread Inserting domain name into Snort rule

First of all; thank you very much for your help. I did what you said and its very close but doing some weird stuff.

Here's what I have:
#!/usr/bin/perl

$work = "/var/tmp/work";
$input = "$work/domainlist.csv";

open (IN,"$input");
open (OUT,">domainlist.rules");
while (<IN>) {
  chomp();
  $domain = $_;

    $dns = join '|', '', ( map { sprintf('%02d',length $_), $_ } split /\./, $domain ), '00', '';
      print "$dns\n";
}

What I get is something like this:

|00|foobar|09|foodomain|04|com

|00|www|06|foobar|12|foobardomain|03|cc

If puts the zeros on the front instead of the end and doesn't give a count

then it counts the next sections correctly

then it always adds an extra count for the last part, maybe its counting a space or something

[aaron_baugher]

The code as you've quoted it works fine when I give it a hardcoded domain:

$domain = 'foobar.foodomain.com';
$dns = join '|', '', ( map { sprintf('%02d',length $_), $_ } split /\.
+/, $domain ), '00', '';
print "$dns\n";
# prints: |06|foobar|09|foodomain|03|com|00|

So I'd say you need to look at your input.

[miniperl]

You are absolutely correct. The input file was originally an windows csv, so a little dos2unix cleaned it up and it works like a champ now.

Thanks again.