forked from mirror/pixelfed
33 lines
848 B
PHP
33 lines
848 B
PHP
<?php
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namespace App\Services;
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use Illuminate\Support\Facades\Cache;
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class DomainService
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{
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const CACHE_KEY = 'pf:services:domains:';
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public static function hasValidDns($domain)
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{
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if (! $domain || ! strlen($domain) || strpos($domain, '.') == -1) {
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return false;
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}
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if (config('security.url.trusted_domains')) {
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if (in_array($domain, explode(',', config('security.url.trusted_domains')))) {
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return true;
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}
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}
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$valid = filter_var($domain, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME);
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if (! $valid) {
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return false;
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}
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return Cache::remember(self::CACHE_KEY.'valid-dns:'.$domain, 1800, function () use ($domain) {
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return count(dns_get_record($domain, DNS_A | DNS_AAAA)) > 0;
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});
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}
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}
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