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<?php |
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namespace Spatie\Dns; |
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use Exception; |
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use Symfony\Component\Process\Process; |
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use Spatie\Dns\Exceptions\InvalidArgument; |
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class Dns |
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{ |
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protected $domain = ''; |
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protected $recordTypes = [ |
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'A', |
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'AAAA', |
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'NS', |
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'SOA', |
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'MX', |
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'TXT', |
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'DNSKEY', |
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]; |
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public function __construct(string $domain) |
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{ |
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if ($domain === '') { |
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throw InvalidArgument::domainIsMissing(); |
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} |
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$this->domain = $this->sanitizeDomainName($domain); |
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} |
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public function getRecords(...$types): string |
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{ |
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$types = $this->determineTypes($types); |
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$types = count($types) |
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? $types |
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: $this->recordTypes; |
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$dnsRecords = array_map(function ($type) { |
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return $this->getRecordsOfType($type); |
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}, $types); |
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return implode('', array_filter($dnsRecords)); |
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} |
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protected function determineTypes(array $types): array |
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{ |
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$types = is_array($types[0] ?? null) |
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? $types[0] |
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: $types; |
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$types = array_map(function (string $type) { |
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return strtoupper($type); |
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}, $types); |
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foreach ($types as $type) { |
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if (! in_array($type, $this->recordTypes)) { |
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throw InvalidArgument::filterIsNotAValidRecordType($type, $this->recordTypes); |
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} |
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} |
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return $types; |
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} |
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protected function sanitizeDomainName(string $domain): string |
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{ |
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$domain = str_replace(['http://', 'https://'], '', $domain); |
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$domain = $this->stringBefore($domain, '/'); |
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return strtolower($domain); |
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} |
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protected function getRecordsOfType(string $type): string |
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{ |
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$command = 'dig +nocmd '.escapeshellarg($this->domain)." {$type} +multiline +noall +answer"; |
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$process = new Process($command); |
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$process->run(); |
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if (! $process->isSuccessful()) { |
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throw new Exception('Dns records could not be fetched'); |
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} |
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return $process->getOutput(); |
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} |
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protected function stringBefore(string $subject, string $search): string |
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{ |
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$position = strpos($subject, $search); |
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if ($position === false) { |
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return $subject; |
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} |
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return substr($subject, 0, $position); |
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} |
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} |
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spatie /
dns
