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<?php |
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namespace RemotelyLiving\PHPDNS\Resolvers; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\ClientInterface; |
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use GuzzleHttp\Exception\RequestException; |
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use GuzzleHttp\Promise\EachPromise; |
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use GuzzleHttp\Psr7\Response; |
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use RemotelyLiving\PHPDNS\Entities\DNSRecordCollection; |
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use RemotelyLiving\PHPDNS\Entities\DNSRecordType; |
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use RemotelyLiving\PHPDNS\Entities\Hostname; |
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use RemotelyLiving\PHPDNS\Mappers\CloudFlare as CloudFlareMapper; |
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use RemotelyLiving\PHPDNS\Resolvers\Exceptions\QueryFailure; |
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class CloudFlare extends ResolverAbstract |
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{ |
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protected const BASE_URI = 'https://cloudflare-dns.com'; |
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protected const DEFAULT_TIMEOUT = 5.0; |
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protected const DEFAULT_OPTIONS = [ |
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'base_uri' => self::BASE_URI, |
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'connect_timeout' => self::DEFAULT_TIMEOUT, |
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'strict' => true, |
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'allow_redirects' => false, |
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'protocols' => ['https'], |
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'headers' => [ |
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'Accept' => 'application/dns-json', |
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], |
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]; |
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/** |
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* @var \GuzzleHttp\Client|\GuzzleHttp\ClientInterface |
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*/ |
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private $http; |
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/** |
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* @var \RemotelyLiving\PHPDNS\Mappers\CloudFlare |
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*/ |
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private $mapper; |
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public function __construct(ClientInterface $http = null, CloudFlareMapper $mapper = null) |
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{ |
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$this->http = $http ?? new Client(self::DEFAULT_OPTIONS); |
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$this->mapper = $mapper ?? new CloudFlareMapper(); |
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} |
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protected function doQuery(Hostname $hostname, DNSRecordType $type): DNSRecordCollection |
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{ |
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try { |
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return (!$type->isA(DNSRecordType::TYPE_ANY)) |
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? $this->doApiQuery($hostname, $type) |
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: $this->doAnyApiQuery($hostname); |
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} catch (RequestException $e) { |
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throw new QueryFailure("Unable to query CloudFlare API", 0, $e); |
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} |
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} |
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/** |
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* Cloudflare does not support ANY queries, so we must ask for all record types individually |
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*/ |
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private function doAnyApiQuery(Hostname $hostname): DNSRecordCollection |
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{ |
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$results = []; |
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$eachPromise = new EachPromise($this->generateEachTypeQuery($hostname), [ |
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'concurrency' => 4, |
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'fulfilled' => function (Response $response) use (&$results) { |
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$results = array_merge( |
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$results, |
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$this->parseResult((array) json_decode((string)$response->getBody(), true)) |
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); |
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}, |
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'rejected' => function (RequestException $e) : void { |
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throw $e; |
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}, |
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]); |
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$eachPromise->promise()->wait(true); |
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return $this->mapResults($this->mapper, $results); |
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} |
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private function generateEachTypeQuery(Hostname $hostname): \Generator |
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{ |
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foreach (DNSRecordType::VALID_TYPES as $type) { |
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if ($type === DNSRecordType::TYPE_ANY) { |
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continue 1; |
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} |
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yield $this->http->requestAsync( |
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'GET', |
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'/dns-query?' . http_build_query(['name' => (string)$hostname, 'type' => $type]) |
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); |
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} |
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} |
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private function doApiQuery(Hostname $hostname, DNSRecordType $type): DNSRecordCollection |
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{ |
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$url = '/dns-query?' . http_build_query(['name' => (string)$hostname, 'type' => (string)$type]); |
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$decoded = (array)json_decode( |
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(string)$this->http->requestAsync('GET', $url)->wait(true)->getBody(), |
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true |
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); |
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return $this->mapResults($this->mapper, $this->parseResult($decoded)); |
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} |
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private function parseResult(array $result): array |
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{ |
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if (isset($result['Answer'])) { |
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return $result['Answer']; |
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} |
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if (isset($result['Authority'])) { |
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return $result['Authority']; |
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} |
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return []; |
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} |
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} |
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remotelyliving /
php-dns
