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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\Rdata; |
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use Badcow\DNS\Validator; |
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/** |
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* @see https://tools.ietf.org/html/rfc1035#section-3.4.1 |
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*/ |
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class A implements RdataInterface |
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{ |
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use RdataTrait; |
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const TYPE = 'A'; |
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const TYPE_CODE = 1; |
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/** |
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* @var string |
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*/ |
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protected $address; |
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/** |
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* @param string $address |
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*/ |
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public function setAddress(string $address): void |
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{ |
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if (!Validator::ipv4($address)) { |
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1 |
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throw new \InvalidArgumentException(sprintf('The address "%s" is not a valid IPv4 address.', $address)); |
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} |
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$this->address = $address; |
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} |
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/** |
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* @return string |
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*/ |
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public function getAddress(): ?string |
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{ |
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return $this->address; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function toText(): string |
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{ |
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return $this->address ?? ''; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function toWire(): string |
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{ |
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if (false === $encoded = @inet_pton($this->address)) { |
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throw new \InvalidArgumentException(sprintf('The IP address "%s" cannot be encoded. Check that it is a valid IP address.', $this->address)); |
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} |
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return $encoded; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function fromText(string $text): RdataInterface |
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{ |
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$a = new static(); |
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$a->setAddress($text); |
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return $a; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws DecodeException |
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*/ |
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public static function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): RdataInterface |
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{ |
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if (false === $address = @inet_ntop(substr($rdata, $offset, 4))) { |
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throw new DecodeException(static::TYPE, $rdata); |
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} |
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$offset += 4; |
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$a = new static(); |
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$a->setAddress($address); |
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return $a; |
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} |
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} |
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Badcow /
DNS
