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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of Badcow DNS Library. |
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* |
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* (c) Samuel Williams <[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 Badcow\DNS; |
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use Badcow\DNS\Rdata\RdataTrait; |
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use Badcow\DNS\Rdata\Types; |
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use Badcow\DNS\Rdata\UnsupportedTypeException; |
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use InvalidArgumentException; |
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use UnexpectedValueException; |
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class Question |
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{ |
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/** |
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* @var string |
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*/ |
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private $name; |
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/** |
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* @var int |
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*/ |
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private $type; |
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/** |
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* @var int |
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*/ |
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private $class; |
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/** |
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* @return string |
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*/ |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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/** |
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* @param string $name |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function setName($name): void |
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{ |
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if (!Validator::fullyQualifiedDomainName($name)) { |
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throw new InvalidArgumentException(sprintf('"%s" is not a fully qualified domain name.', $name)); |
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} |
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$this->name = $name; |
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} |
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/** |
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* @return int |
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*/ |
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public function getType(): int |
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{ |
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return $this->type; |
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} |
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/** |
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* @param string|int $type |
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* |
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* @throws UnsupportedTypeException |
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*/ |
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public function setType($type): void |
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{ |
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if (is_string($type)) { |
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$this->type = Types::getTypeCode($type); |
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} elseif (is_int($type)) { |
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$this->type = $type; |
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} else { |
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throw new UnsupportedTypeException(sprintf('Library does not support type "%s".', $type)); |
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} |
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} |
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/** |
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* @return int |
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*/ |
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public function getClass(): int |
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{ |
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return $this->class; |
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} |
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/** |
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* @param string|int $class |
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*/ |
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public function setClass($class): void |
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{ |
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if (is_string($class)) { |
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$this->class = Classes::getClassId($class); |
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} elseif (Validator::isUnsignedInteger($class, 16)) { |
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$this->class = $class; |
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} else { |
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throw new InvalidArgumentException(sprintf('Invalid class: "%s".', $class)); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function toWire(): string |
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{ |
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return RdataTrait::encodeName($this->name).pack('nn', $this->type, $this->class); |
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} |
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/** |
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* @param string $encoded |
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* @param int $offset |
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* |
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* @return Question |
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* |
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* @throws UnexpectedValueException |
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* @throws UnsupportedTypeException |
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*/ |
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public static function fromWire(string $encoded, int &$offset = 0): Question |
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{ |
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$question = new self(); |
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$question->setName(RdataTrait::decodeName($encoded, $offset)); |
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$integers = unpack('ntype/nclass', $encoded, $offset); |
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$question->setType($integers['type']); |
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$question->setClass($integers['class']); |
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$offset += 4; |
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return $question; |
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} |
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} |
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Badcow /
DNS
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