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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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use Badcow\DNS\Validator; |
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/** |
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* {@link https://tools.ietf.org/html/rfc5155#section-4}. |
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*/ |
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class NSEC3PARAM implements RdataInterface |
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{ |
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use RdataTrait; |
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const TYPE = 'NSEC3PARAM'; |
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const TYPE_CODE = 51; |
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/** |
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* @var int |
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*/ |
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private $hashAlgorithm; |
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/** |
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* @var int |
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*/ |
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private $flags = 0; |
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/** |
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* @var int |
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*/ |
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private $iterations; |
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/** |
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* @var string Binary encoded string |
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*/ |
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private $salt; |
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/** |
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* @return int |
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*/ |
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1 |
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public function getHashAlgorithm(): int |
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{ |
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1 |
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return $this->hashAlgorithm; |
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} |
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/** |
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* @param int $hashAlgorithm |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function setHashAlgorithm(int $hashAlgorithm): void |
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{ |
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if (!Validator::isUnsignedInteger($hashAlgorithm, 8)) { |
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throw new \InvalidArgumentException('Hash algorithm must be 8-bit integer.'); |
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} |
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$this->hashAlgorithm = $hashAlgorithm; |
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} |
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/** |
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* @return int |
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*/ |
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1 |
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public function getFlags(): int |
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{ |
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1 |
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return $this->flags; |
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} |
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/** |
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* @param int $flags |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function setFlags(int $flags): void |
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{ |
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if (!Validator::isUnsignedInteger($flags, 8)) { |
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throw new \InvalidArgumentException('Flags must be an 8-bit unsigned integer.'); |
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} |
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6 |
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$this->flags = $flags; |
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6 |
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} |
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/** |
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* @return int |
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*/ |
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1 |
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public function getIterations(): int |
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{ |
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return $this->iterations; |
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} |
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/** |
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* @param int $iterations |
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*/ |
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6 |
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public function setIterations(int $iterations): void |
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{ |
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6 |
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if (!Validator::isUnsignedInteger($iterations, 16)) { |
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throw new \InvalidArgumentException('Hash algorithm must be 16-bit integer.'); |
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} |
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6 |
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$this->iterations = $iterations; |
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6 |
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} |
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/** |
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* @return string Base16 string |
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*/ |
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1 |
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public function getSalt(): string |
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{ |
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return bin2hex($this->salt); |
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} |
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/** |
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* @param string $salt Hexadecimal string |
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*/ |
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public function setSalt(string $salt): void |
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{ |
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if (false === $bin = @hex2bin($salt)) { |
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throw new \InvalidArgumentException('Salt must be a hexadecimal string.'); |
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} |
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$this->salt = $bin; |
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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->hashAlgorithm, $this->flags, $this->iterations, bin2hex($this->salt)); |
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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('CCnC', $this->hashAlgorithm, $this->flags, $this->iterations, strlen($this->salt)).$this->salt; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @return NSEC3PARAM |
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*/ |
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public static function fromText(string $text): RdataInterface |
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{ |
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$rdata = explode(Tokens::SPACE, $text); |
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$nsec3param = new self(); |
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$nsec3param->setHashAlgorithm((int) array_shift($rdata)); |
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1 |
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$nsec3param->setFlags((int) array_shift($rdata)); |
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$nsec3param->setIterations((int) array_shift($rdata)); |
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$nsec3param->setSalt((string) array_shift($rdata)); |
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return $nsec3param; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @return NSEC3PARAM |
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*/ |
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public static function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): RdataInterface |
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{ |
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$integers = unpack('C<algorithm>/C<flags>/n<iterations>/C<saltLen>', $rdata, $offset); |
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$saltLen = (int) $integers['<saltLen>']; |
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$offset += 5; |
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$nsec3param = new self(); |
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$nsec3param->setHashAlgorithm($integers['<algorithm>']); |
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$nsec3param->setFlags($integers['<flags>']); |
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$nsec3param->setIterations($integers['<iterations>']); |
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$saltBin = substr($rdata, $offset, $saltLen); |
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$nsec3param->setSalt(bin2hex($saltBin)); |
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$offset += $saltLen; |
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return $nsec3param; |
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} |
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} |
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Badcow /
DNS
