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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\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/rfc4255}. |
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*/ |
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class SSHFP implements RdataInterface |
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{ |
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1 |
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use RdataTrait; |
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const TYPE = 'SSHFP'; |
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const TYPE_CODE = 44; |
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const ALGORITHM_RSA = 1; |
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const ALGORITHM_DSA = 2; |
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const FP_TYPE_SHA1 = 1; |
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/** |
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* 8-bit algorithm designate. |
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* |
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* @var int |
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*/ |
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private $algorithm; |
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/** |
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* 8-bit Fingerprint type. |
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* |
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* @var int |
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*/ |
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private $fingerprintType = self::FP_TYPE_SHA1; |
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/** |
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* Hexadecimal string. |
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* |
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* @var string |
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*/ |
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private $fingerprint; |
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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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/** |
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* @throws \InvalidArgumentException |
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*/ |
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public function setAlgorithm(int $algorithm): void |
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{ |
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if (!Validator::isUnsignedInteger($algorithm, 8)) { |
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throw new \InvalidArgumentException('Algorithm must be an 8-bit integer between 0 and 255.'); |
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} |
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8 |
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$this->algorithm = $algorithm; |
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} |
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public function getFingerprintType(): int |
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{ |
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return $this->fingerprintType; |
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} |
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/** |
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* @throws \InvalidArgumentException |
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*/ |
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public function setFingerprintType(int $fingerprintType): void |
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{ |
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8 |
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if (!Validator::isUnsignedInteger($fingerprintType, 8)) { |
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throw new \InvalidArgumentException('Fingerprint type must be an 8-bit integer between 0 and 255.'); |
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} |
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$this->fingerprintType = $fingerprintType; |
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} |
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public function getFingerprint(): string |
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{ |
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return $this->fingerprint; |
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} |
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public function setFingerprint(string $fingerprint): void |
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{ |
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$this->fingerprint = $fingerprint; |
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} |
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public function toText(): string |
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{ |
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return sprintf('%d %d %s', $this->algorithm, $this->fingerprintType, bin2hex($this->fingerprint)); |
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} |
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1 |
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public function toWire(): string |
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{ |
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return pack('CC', $this->algorithm, $this->fingerprintType).$this->fingerprint; |
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} |
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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->setAlgorithm((int) array_shift($rdata)); |
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$this->setFingerprintType((int) array_shift($rdata)); |
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if (false === $fingerprint = hex2bin((string) array_shift($rdata))) { |
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throw new ParseException('Fingerprint could no be parsed. Invalid hexadecimal.'); |
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} |
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$this->setFingerprint($fingerprint); |
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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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if (false === $integers = unpack('C<algorithm>/C<fpType>', $rdata, $offset)) { |
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throw new DecodeException(static::TYPE, $rdata); |
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} |
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$offset += 2; |
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$this->setAlgorithm($integers['<algorithm>']); |
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$this->setFingerprintType($integers['<fpType>']); |
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$fpLen = ($rdLength ?? strlen($rdata)) - 2; |
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$this->setFingerprint(substr($rdata, $offset, $fpLen)); |
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$offset += $fpLen; |
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} |
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} |
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Badcow /
DNS
