Файловый менеджер - Редактировать - /var/www/html/mediawiki-1.43.1/includes/libs/DnsSrvDiscoverer.php
Ðазад
<?php /** * Service discovery using DNS SRV records * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * http://www.gnu.org/copyleft/gpl.html * * @file */ /** * @since 1.29 */ class DnsSrvDiscoverer { /** * @var string */ private $service; /** * @var string */ private $protocol; /** * @var string|null */ private $domain; /** * @var callable */ private $resolver; /** * Construct a new discoverer for the given domain, service, and protocol. * * @param string $service Name of the service to discover. * @param string $protocol Service protocol. Defaults to 'tcp' * @param ?string $domain The hostname/domain on which to perform discovery * of the given service and protocol. Defaults to null which effectively * performs a query relative to the host's configured search domain. * @param ?callable $resolver Resolver function. Defaults to using * dns_get_record. Primarily useful in testing. */ public function __construct( string $service, string $protocol = 'tcp', ?string $domain = null, ?callable $resolver = null ) { $this->service = $service; $this->protocol = $protocol; $this->domain = $domain; $this->resolver = $resolver ?? static function ( $srv ) { return dns_get_record( $srv, DNS_SRV ); }; } /** * Queries the resolver for an SRV resource record matching the service, * protocol, and domain and returns all target/port/priority/weight * records. * * @return array */ public function getRecords() { $result = []; $records = ( $this->resolver )( $this->getSrvName() ); // Respect RFC 2782 with regard to a single '.' entry denoting a valid // empty response if ( !$records || ( count( $records ) === 1 && $records[0]['target'] === '.' ) ) { return $result; } foreach ( $records as $record ) { $result[] = [ 'target' => $record['target'], 'port' => (int)$record['port'], 'pri' => (int)$record['pri'], 'weight' => (int)$record['weight'], ]; } return $result; } /** * Performs discovery for the domain, service, and protocol, and returns a * list of resolved server name/ip and port number pairs sorted by each * record's priority, with servers of the same priority randomly shuffled. * * @return array */ public function getServers() { $records = $this->getRecords(); usort( $records, static function ( $a, $b ) { if ( $a['pri'] === $b['pri'] ) { return mt_rand( 0, 1 ) ? 1 : -1; } return $a['pri'] - $b['pri']; } ); $serversAndPorts = []; foreach ( $records as $record ) { $serversAndPorts[] = [ $record['target'], $record['port'] ]; } return $serversAndPorts; } /** * Returns the SRV resource record name. * * @return string */ public function getSrvName(): string { $srv = "_{$this->service}._{$this->protocol}"; if ( $this->domain === null || $this->domain === '' ) { return $srv; } return "$srv.{$this->domain}"; } }
| ver. 1.1 | |
.
| PHP 8.4.18 | Ð“ÐµÐ½ÐµÑ€Ð°Ñ†Ð¸Ñ Ñтраницы: 0 |
proxy
|
phpinfo
|
ÐаÑтройка