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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\Message; |
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use Badcow\DNS\Parser\ParseException; |
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use Badcow\DNS\Parser\Tokens; |
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use Badcow\DNS\Validator; |
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/** |
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* {@link https://tools.ietf.org/html/rfc8005}. |
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*/ |
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class HIP implements RdataInterface |
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{ |
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use RdataTrait; |
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const TYPE = 'HIP'; |
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const TYPE_CODE = 55; |
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/** |
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* @var int |
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*/ |
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private $publicKeyAlgorithm; |
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/** |
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* @var string |
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*/ |
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private $hostIdentityTag; |
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/** |
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* @var string |
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*/ |
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private $publicKey; |
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/** |
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* @var string[] |
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*/ |
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private $rendezvousServers = []; |
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/** |
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* @return int |
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*/ |
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public function getPublicKeyAlgorithm(): int |
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{ |
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return $this->publicKeyAlgorithm; |
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} |
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/** |
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* @param int $publicKeyAlgorithm |
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*/ |
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public function setPublicKeyAlgorithm(int $publicKeyAlgorithm): void |
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{ |
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$this->publicKeyAlgorithm = $publicKeyAlgorithm; |
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} |
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/** |
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* @return string |
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*/ |
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public function getHostIdentityTag(): string |
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{ |
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return $this->hostIdentityTag; |
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} |
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/** |
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* @param string $hostIdentityTag |
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*/ |
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public function setHostIdentityTag(string $hostIdentityTag): void |
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{ |
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$this->hostIdentityTag = $hostIdentityTag; |
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} |
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/** |
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* @return string |
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*/ |
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public function getPublicKey(): string |
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{ |
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return $this->publicKey; |
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} |
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/** |
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* @param string $publicKey |
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*/ |
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public function setPublicKey(string $publicKey): void |
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{ |
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$this->publicKey = $publicKey; |
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} |
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/** |
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* @param string $server |
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*/ |
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public function addRendezvousServer(string $server): void |
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{ |
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if (!Validator::fullyQualifiedDomainName($server)) { |
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throw new \InvalidArgumentException('Rendezvous Server must be a fully-qualified domain name.'); |
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} |
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$this->rendezvousServers[] = $server; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getRendezvousServers(): array |
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{ |
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return $this->rendezvousServers; |
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} |
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/** |
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* Clear all rendezvous servers from the record. |
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*/ |
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public function clearRendezvousServer(): void |
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{ |
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$this->rendezvousServers = []; |
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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 %s %s %s', |
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$this->publicKeyAlgorithm, |
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bin2hex($this->hostIdentityTag), |
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base64_encode($this->publicKey), |
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implode(Tokens::SPACE, $this->rendezvousServers) |
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); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function toWire(): string |
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{ |
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$rdata = pack('CCn', |
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strlen($this->hostIdentityTag), |
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$this->publicKeyAlgorithm, |
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strlen($this->publicKey) |
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); |
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$rdata .= $this->hostIdentityTag; |
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$rdata .= $this->publicKey; |
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foreach ($this->rendezvousServers as $server) { |
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$rdata .= Message::encodeName($server); |
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} |
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return $rdata; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws ParseException |
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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->setPublicKeyAlgorithm((int) array_shift($rdata)); |
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if (false === $hostIdentityTag = @hex2bin((string) array_shift($rdata))) { |
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throw new ParseException(sprintf('Unable to parse host identity tag of rdata string "%s".', $text)); |
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} |
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$this->setHostIdentityTag($hostIdentityTag); |
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if (false === $publicKey = base64_decode((string) array_shift($rdata), true)) { |
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throw new ParseException(sprintf('Unable to parse public key of rdata string "%s".', $text)); |
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} |
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$this->setPublicKey($publicKey); |
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array_map([$this, 'addRendezvousServer'], $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 $rdLength = null): void |
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{ |
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$end = $offset + ($rdLength ?? strlen($rdata)); |
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$integers = unpack('C<hitLen>/C<algorithm>/n<pkLen>', $rdata, $offset); |
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$offset += 4; |
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$hitLen = (int) $integers['<hitLen>']; |
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$pkLen = (int) $integers['<pkLen>']; |
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$this->setPublicKeyAlgorithm((int) $integers['<algorithm>']); |
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$this->setHostIdentityTag(substr($rdata, $offset, $hitLen)); |
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$offset += $hitLen; |
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$this->setPublicKey(substr($rdata, $offset, $pkLen)); |
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$offset += $pkLen; |
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while ($offset < $end) { |
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$this->addRendezvousServer(Message::decodeName($rdata, $offset)); |
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} |
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} |
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} |
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Badcow /
DNS
