{
    my $rec = $DB->get('callback')
        || $DB->new_record('callback', {type => 'webapp'});
    my $pw = $rec->prop('Secret');
    if (not $pw or length($pw) < 30)
    {   
        use MIME::Base64 qw(encode_base64);

        $pw = "not set due to error";
        if ( open( RANDOM, "/dev/urandom" ) )
        {   
            my $buf;
            if ( read( RANDOM, $buf, 30 ) != 30 )
            {   
                warn("Short read from /dev/random: $!");
            }
            else
            {   
                $pw = encode_base64($buf);
                chomp $pw;
            }
            close RANDOM;
        }
        else
        {   
            warn "Could not open /dev/urandom: $!";
        }
        $rec->set_prop('Secret', $pw);
    }
}