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<?php |
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/* |
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* This file is part of PHP DNS Server. |
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* |
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* (c) Yif Swery <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace yswery\DNS\Resolver; |
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use yswery\DNS\ClassEnum; |
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use yswery\DNS\RecordTypeEnum; |
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use yswery\DNS\ResourceRecord; |
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use yswery\DNS\UnsupportedTypeException; |
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class XmlResolver extends AbstractResolver |
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{ |
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private $defaultClass = ClassEnum::INTERNET; |
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/** |
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* XmlResolver constructor. |
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* |
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* @param array $files |
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* |
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* @throws UnsupportedTypeException |
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*/ |
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public function __construct(array $files) |
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{ |
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$this->isAuthoritative = true; |
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$this->allowRecursion = false; |
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foreach ($files as $file) { |
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$xml = new \SimpleXMLElement(file_get_contents($file)); |
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$this->addZone($this->process($xml)); |
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} |
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} |
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/** |
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* @param object $xml |
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* |
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* @return ResourceRecord[] |
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* |
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* @throws UnsupportedTypeException |
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*/ |
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private function process($xml): array |
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{ |
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$parent = (string) $xml->{'name'}; |
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$defaultTtl = (int) $xml->{'default-ttl'}; |
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$resourceRecords = []; |
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foreach ($xml->{'resource-records'}->{'resource-record'} as $rr) { |
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$name = (string) $rr->{'name'} ?? $parent; |
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$class = isset($rr->{'class'}) ? ClassEnum::getClassFromName($rr->{'class'}) : $this->defaultClass; |
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$ttl = isset($rr->{'ttl'}) ? (int) $rr->{'ttl'} : $defaultTtl; |
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$resourceRecords[] = (new ResourceRecord()) |
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->setName($this->handleName($name, $parent)) |
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->setClass($class) |
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->setType($type = RecordTypeEnum::getTypeFromName($rr->{'type'})) |
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->setTtl($ttl) |
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->setRdata($this->extractRdata($this->simpleXmlToArray($rr->{'rdata'}), $type, $parent)); |
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} |
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return $resourceRecords; |
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} |
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/** |
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* Convert a SimpleXML object to an associative array. |
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* |
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* @param \SimpleXMLElement $xmlObject |
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* |
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* @return array |
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*/ |
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private function simpleXmlToArray(\SimpleXMLElement $xmlObject): array |
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{ |
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$array = []; |
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foreach ($xmlObject->children() as $node) { |
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$array[$node->getName()] = is_array($node) ? $this->simpleXmlToArray($node) : (string) $node; |
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} |
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return $array; |
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} |
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} |
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samuelwilliams /
PHP-DNS-SERVER
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