servnest/pg-act/ns/print.php

<?php declare(strict_types=1);

nsCheckZonePossession($_POST['zone']);

$data['zone_name'] = $_POST['zone'];

rateLimit();

$zone_content = file_get_contents(CONF['ns']['knot_zones_path'] . '/' . $data['zone_name'] . 'zone');
if ($zone_content === false)
	output(500, 'Unable to read zone file.');

if ($_POST['print'] === 'raw')
	$data['zone-raw'] = $zone_content;

elseif ($_POST['print'] === 'table')
	$data['zone-table'] = parseZoneFile($zone_content, NS_ALLOWED_TYPES);

elseif ($_POST['print'] === 'ds') {
	$found = preg_match('/^' . preg_quote($data['zone_name'], '/') . '[\t ]+0[\t ]+CDS[\t ]+(?<tag>[0-9]{1,5})[\t ]+(?<algo>[0-9]{1,2})[\t ]+(?<digest_type>[0-9])[\t ]+(?<digest>[0-9A-F]{64})$/Dm', $zone_content, $data['zone-ds']);
	if ($found !== 1)
		output(500, 'Unable to get public key record from zone file.');
}

else
	output(403, 'Wrong <code>print</code> method.');