I've written a small script which uses a module called Config.pm to read a set of global constants as config file parameters. (Why invent a new config file syntax when you can use what PERL already provides, right?). This works fine. But I want the config file constants available to all the modules in my application. But I can't get this to work. My config module, Audit::Config.pm follows:

# full path to hosts file
use constant HOSTS_FILE => '/home/csssec/audit/css_hosts.txt';

# full path to local host binary
use constant HOST_BIN => '/usr/bin/host';

...

1;
[download]

Here's the script I'm using to test:

#!/usr/bin/perl -w

use strict;

use Audit::Config;
use Check::DNSCheck;

# for every host in the hosts file
open(FILE, HOSTS_FILE) || die("$!\n");
while (<FILE>) {

        chomp($_);
        my $host = $_;

        next if ($host =~ /^(\s*)#/);

        my $chk = new DNSCheck($host);
        $chk->run();

}
close(FILE);
[download]

I want Check::DNSCheck to be able to access the constants in Audit::Config as well. I've gotten this to work in a non-OO context. But I changed Check::DNSCheck to be an OO style module (with new{} sub etc) and I could no longer access the constants in Audit::Config. Check::DNSCheck code follows:

package DNSCheck;

use Audit::Config;
use strict;

sub new
{
        my $class = shift;
        my $host = shift;

        my $this =
        {
                host   => $host,
        };
        bless ($this, $class);

}

sub run
{
        my $this = shift;

        my $cmd = HOST_BIN . " $this->{'host'} 2>/dev/null";

        my $r = `$cmd`;
        if ($r !~ /has address/)
        {
                return(0);
        }

        return(1);

}

1;
[download]

Running gives the following error:

Bareword "HOST_BIN" not allowed while "strict subs" in use at Check/DN
+SCheck.pm line 30.
Compilation failed in require at ./audit.pl line 6.
BEGIN failed--compilation aborted at ./audit.pl line 6.
[download]

So Check::DnsCheck.pm obviously insn't importing the values in Audit::Config.pm, but I'm not sure why. Some insight in this would be greatly appreciated.

Is there a better way to go about this?

Thanks

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