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LibDNSJson/lib/QueryEncoder.php

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2019-06-12 14:31:58 +02:00
<?php declare(strict_types = 1);
/**
* Encodes Message objects to query strings.
*
* PHP version 5.4
*
* @category LibDNS
* @package Encoder
* @author Daniil Gentili <https://daniil.it>, Chris Wright <https://github.com/DaveRandom>
* @copyright Copyright (c) Chris Wright <https://github.com/DaveRandom>
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 2.0.0
*/
namespace danog\LibDNSJson;
use \LibDNS\Messages\Message;
use LibDNS\Messages\MessageTypes;
/**
* Encodes Message objects to query strings.
*
* @category LibDNS
* @package Encoder
* @author Daniil Gentili <https://daniil.it>, Chris Wright <https://github.com/DaveRandom>
*/
class QueryEncoder
{
/**
* Encode a Message to URL payload.
*
* @param \LibDNS\Messages\Message $message The Message to encode
* @return string
*/
public function encode(Message $message): string
{
if ($message->getType() !== MessageTypes::QUERY) {
throw new \InvalidArgumentException('Invalid question: is not a question record');
}
$questions = $message->getQuestionRecords();
if ($questions->count() === 0) {
throw new \InvalidArgumentException('Invalid question: 0 question records provided');
}
$question = $questions->getRecordByIndex(0);
return \http_build_query(
[
'cd' => 0, // Do not disable result validation
'do' => 0, // Do not send me DNSSEC data
'type' => $question->getType(), // Record type being requested
'name' => \implode('.', $question->getName()->getLabels()), // Record name being requested
'ct' => 'application/dns-json', // Content-type of request
]
);
}
}