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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\Parser\Tokens; |
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/** |
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* {@link https://tools.ietf.org/html/rfc2535#section-3.1}. |
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*/ |
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class KEY implements RdataInterface |
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{ |
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use RdataTrait; |
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const TYPE = 'KEY'; |
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const TYPE_CODE = 25; |
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/** |
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* {@link https://tools.ietf.org/html/rfc4034#section-2.1.1}. |
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* |
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* @var int |
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*/ |
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protected $flags; |
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/** |
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* @var int |
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*/ |
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protected $protocol; |
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/** |
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* The Algorithm field identifies the public key's cryptographic |
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* algorithm and determines the format of the Public Key field. |
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* {@link https://tools.ietf.org/html/rfc4034#section-2.1.3}. |
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* |
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* @var int |
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*/ |
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protected $algorithm; |
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/** |
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* The Public Key field is a Base64 encoding of the Public Key. |
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* Whitespace is allowed within the Base64 text. |
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* {@link https://tools.ietf.org/html/rfc4034#section-2.1.4}. |
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* |
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* @var string |
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*/ |
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protected $publicKey; |
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public function setFlags(int $flags): void |
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{ |
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$this->flags = $flags; |
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} |
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public function setProtocol(int $protocol): void |
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{ |
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$this->protocol = $protocol; |
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} |
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public function setAlgorithm(int $algorithm): void |
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{ |
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$this->algorithm = $algorithm; |
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} |
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/** |
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* @throws \InvalidArgumentException |
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*/ |
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public function setPublicKey(string $publicKey): void |
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{ |
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if (false === $key = base64_decode($publicKey, true)) { |
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throw new \InvalidArgumentException('The public key must be a valid base64 encoded string.'); |
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} |
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$this->publicKey = $key; |
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} |
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public function getFlags(): int |
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{ |
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return $this->flags; |
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} |
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public function getProtocol(): int |
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{ |
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return $this->protocol; |
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} |
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3 |
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public function getAlgorithm(): int |
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{ |
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return $this->algorithm; |
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} |
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3 |
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public function getPublicKey(): string |
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{ |
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return base64_encode($this->publicKey); |
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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 sprintf('%d %d %d %s', $this->flags, $this->protocol, $this->algorithm, base64_encode($this->publicKey)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function toWire(): string |
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{ |
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return pack('nCC', $this->flags, $this->protocol, $this->algorithm).$this->publicKey; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function fromText(string $text): void |
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{ |
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$rdata = explode(Tokens::SPACE, $text); |
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$this->setFlags((int) array_shift($rdata)); |
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$this->setProtocol((int) array_shift($rdata)); |
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$this->setAlgorithm((int) array_shift($rdata)); |
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$this->setPublicKey(implode('', $rdata)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): void |
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{ |
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$rdLength = $rdLength ?? strlen($rdata); |
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$integers = unpack('nflags/Cprotocol/Calgorithm', $rdata, $offset); |
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$offset += 4; |
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$this->setFlags((int) $integers['flags']); |
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$this->setProtocol((int) $integers['protocol']); |
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$this->setAlgorithm((int) $integers['algorithm']); |
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$this->publicKey = substr($rdata, $offset, $rdLength - 4); |
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$offset += $rdLength - 4; |
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} |
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} |
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Badcow /
DNS
