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<?php |
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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; |
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use Badcow\DNS\Rdata\CNAME; |
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use Badcow\DNS\Rdata\MX; |
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use Badcow\DNS\Rdata\AAAA; |
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use Badcow\DNS\Rdata\SOA; |
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use Badcow\DNS\Ip\Toolbox; |
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class ZoneBuilder |
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{ |
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/** |
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* @param Zone $zone |
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* |
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* @return string |
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*/ |
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public static function build(Zone $zone): string |
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{ |
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$master = '$ORIGIN '.$zone->getName().PHP_EOL; |
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if (null !== $zone->getDefaultTtl()) { |
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$master .= '$TTL '.$zone->getDefaultTtl().PHP_EOL; |
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} |
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foreach ($zone as $rr) { |
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if (null !== $rr->getRdata()) { |
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$master .= preg_replace('/\s+/', ' ', trim(sprintf('%s %s %s %s %s', |
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$rr->getName(), |
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$rr->getTtl(), |
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$rr->getClass(), |
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$rr->getType(), |
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$rr->getRdata()->output() |
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))); |
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} |
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if (null !== $rr->getComment()) { |
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$master .= '; '.$rr->getComment(); |
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} |
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$master .= PHP_EOL; |
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} |
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return $master; |
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} |
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/** |
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* Fills out all of the data of each resource record. The function will add the parent domain to all non-qualified |
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* sub-domains, replace '@' with the zone name, ensure the class and TTL are on each record. |
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* |
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* @param Zone $zone |
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*/ |
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public static function fillOutZone(Zone $zone) |
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{ |
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$class = Classes::INTERNET; |
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foreach ($zone as $rr) { |
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if (null !== $class = $rr->getClass()) { |
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break; |
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} |
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} |
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foreach ($zone as &$rr) { |
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$rr->setName(self::fullyQualify($rr->getName(), $zone->getName())); |
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$rr->setTtl($rr->getTtl() ?? $zone->getDefaultTtl()); |
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if ($rr->getRdata() instanceof SOA) { |
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$rr->getRdata()->setMname(self::fullyQualify($rr->getRdata()->getMname(), $zone->getName())); |
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$rr->getRdata()->setRname(self::fullyQualify($rr->getRdata()->getRname(), $zone->getName())); |
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} |
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if ($rr->getRdata() instanceof CNAME) { |
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$rr->getRdata()->setTarget(self::fullyQualify($rr->getRdata()->getTarget(), $zone->getName())); |
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} |
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if ($rr->getRdata() instanceof MX) { |
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$rr->getRdata()->setExchange(self::fullyQualify($rr->getRdata()->getExchange(), $zone->getName())); |
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} |
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if ($rr->getRdata() instanceof AAAA) { |
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$rr->getRdata()->setAddress(Toolbox::expandIpv6($rr->getRdata()->getAddress())); |
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} |
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$rr->setClass($class); |
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} |
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} |
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/** |
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* Add the parent domain to the sub-domain if the sub-domain if it is not fully qualified. |
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* |
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* @param string $subdomain |
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* @param string $parent |
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* |
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* @return string |
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*/ |
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private static function fullyQualify(string $subdomain, string $parent): string |
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{ |
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if ('@' === $subdomain) { |
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return $parent; |
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} |
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if ('.' !== substr($subdomain, -1, 1)) { |
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return $subdomain.'.'.$parent; |
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} |
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return $subdomain; |
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} |
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} |
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Badcow /
DNS
