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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\Validator; |
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use Badcow\DNS\Rdata\CNAME; |
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use Badcow\DNS\ResourceRecord; |
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use Badcow\DNS\Zone; |
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abstract class AbstractValidator |
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{ |
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/** |
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* Test jf the the $record can be added to the $zone. |
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* |
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* @param Zone $zone |
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* @param ResourceRecord $record |
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* |
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* @return bool |
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*/ |
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abstract public static function canAddToZone(Zone $zone, ResourceRecord $record): bool; |
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/** |
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* Ensure $zone does not contain existing CNAME alias corresponding to $record's name. |
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* |
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* E.g. |
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* www IN CNAME example.com. |
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* www IN TXT "This is a violation of DNS specifications." |
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* |
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* @see https://tools.ietf.org/html/rfc1034#section-3.6.2 |
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* |
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* @param Zone $zone |
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* @param ResourceRecord $record |
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* |
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* @return bool |
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*/ |
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public static function noCNAMEinZone(Zone $zone, ResourceRecord $record): bool |
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{ |
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foreach ($zone as $rr) { |
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if (CNAME::TYPE === $rr->getType() |
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&& $record->getName() === $rr->getName()) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Ensure $zone does not contain existing record corresponding to $record's name and type. |
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* |
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* @param Zone $zone |
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* @param ResourceRecord $record |
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* |
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* @return bool |
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*/ |
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public static function noDuplicate(Zone $zone, ResourceRecord $record): bool |
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{ |
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foreach ($zone as $rr) { |
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if ($record->getType() === $rr->getType() |
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&& $record->getName() === $rr->getName()) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Ensure $zone does not contain existing record corresponding to $record's name only. |
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* |
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* @param Zone $zone |
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* @param ResourceRecord $record |
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* |
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* @return bool |
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*/ |
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public static function nameDoesntExists(Zone $zone, ResourceRecord $record): bool |
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{ |
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foreach ($zone as $rr) { |
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if ($record->getName() === $rr->getName()) { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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Badcow /
DNS
