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<?php /** * Network API: WP_Network class * * @package WordPress * @subpackage Multisite * @since 4.4.0 / /* * Core class used for interacting with a multisite network. * * This class is used during load to populate the `$current_site` global and * setup the current network. * * This class is most useful in WordPress multi-network installations where the * ability to interact with any network of sites is required. * * @since 4.4.0 * * @property int $id * @property int $site_id / #[AllowDynamicProperties] class WP_Network { /* * Network ID. * * @since 4.4.0 * @since 4.6.0 Converted from public to private to explicitly enable more intuitive * access via magic methods. As part of the access change, the type was * also changed from `string` to `int`. * @var int / private $id; /* * Domain of the network. * * @since 4.4.0 * @var string / public $domain = ''; /* * Path of the network. * * @since 4.4.0 * @var string / public $path = ''; /* * The ID of the network's main site. * * Named "blog" vs. "site" for legacy reasons. A main site is mapped to * the network when the network is created. * * A numeric string, for compatibility reasons. * * @since 4.4.0 * @var string / private $blog_id = '0'; /* * Domain used to set cookies for this network. * * @since 4.4.0 * @var string / public $cookie_domain = ''; /* * Name of this network. * * Named "site" vs. "network" for legacy reasons. * * @since 4.4.0 * @var string / public $site_name = ''; /* * Retrieves a network from the database by its ID. * * @since 4.4.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $network_id The ID of the network to retrieve. * @return WP_Network\|false The network's object if found. False if not. / public static function get_instance( $network_id ) { global $wpdb; $network_id = (int) $network_id; if ( ! $network_id ) { return false; } $_network = wp_cache_get( $network_id, 'networks' ); if ( false === $_network ) { $_network = $wpdb->get_row( $wpdb->prepare( "SELECT FROM {$wpdb->site} WHERE id = %d LIMIT 1", $network_id ) ); if ( empty( $_network ) \|\| is_wp_error( $_network ) ) { $_network = -1; } wp_cache_add( $network_id, $_network, 'networks' ); } if ( is_numeric( $_network ) ) { return false; } return new WP_Network( $_network ); } /** * Creates a new WP_Network object. * * Will populate object properties from the object provided and assign other * default properties based on that information. * * @since 4.4.0 * * @param WP_Network\|object $network A network object. / public function __construct( $network ) { foreach ( get_object_vars( $network ) as $key => $value ) { $this->$key = $value; } $this->_set_site_name(); $this->_set_cookie_domain(); } /* * Getter. * * Allows current multisite naming conventions when getting properties. * * @since 4.6.0 * * @param string $key Property to get. * @return mixed Value of the property. Null if not available. / public function __get( $key ) { switch ( $key ) { case 'id': return (int) $this->id; case 'blog_id': return (string) $this->get_main_site_id(); case 'site_id': return $this->get_main_site_id(); } return null; } /* * Isset-er. * * Allows current multisite naming conventions when checking for properties. * * @since 4.6.0 * * @param string $key Property to check if set. * @return bool Whether the property is set. / public function __isset( $key ) { switch ( $key ) { case 'id': case 'blog_id': case 'site_id': return true; } return false; } /* * Setter. * * Allows current multisite naming conventions while setting properties. * * @since 4.6.0 * * @param string $key Property to set. * @param mixed $value Value to assign to the property. / public function __set( $key, $value ) { switch ( $key ) { case 'id': $this->id = (int) $value; break; case 'blog_id': case 'site_id': $this->blog_id = (string) $value; break; default: $this->$key = $value; } } /* * Returns the main site ID for the network. * * Internal method used by the magic getter for the 'blog_id' and 'site_id' * properties. * * @since 4.9.0 * * @return int The ID of the main site. / private function get_main_site_id() { /* * Filters the main site ID. * * Returning a positive integer will effectively short-circuit the function. * * @since 4.9.0 * * @param int\|null $main_site_id If a positive integer is returned, it is interpreted as the main site ID. * @param WP_Network $network The network object for which the main site was detected. / $main_site_id = (int) apply_filters( 'pre_get_main_site_id', null, $this ); if ( 0 < $main_site_id ) { return $main_site_id; } if ( 0 < (int) $this->blog_id ) { return (int) $this->blog_id; } if ( ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) && DOMAIN_CURRENT_SITE === $this->domain && PATH_CURRENT_SITE === $this->path ) \|\| ( defined( 'SITE_ID_CURRENT_SITE' ) && (int) SITE_ID_CURRENT_SITE === $this->id ) ) { if ( defined( 'BLOG_ID_CURRENT_SITE' ) ) { $this->blog_id = (string) BLOG_ID_CURRENT_SITE; return (int) $this->blog_id; } if ( defined( 'BLOGID_CURRENT_SITE' ) ) { // Deprecated. $this->blog_id = (string) BLOGID_CURRENT_SITE; return (int) $this->blog_id; } } $site = get_site(); if ( $site->domain === $this->domain && $site->path === $this->path ) { $main_site_id = (int) $site->id; } else { $main_site_id = get_network_option( $this->id, 'main_site' ); if ( false === $main_site_id ) { $_sites = get_sites( array( 'fields' => 'ids', 'number' => 1, 'domain' => $this->domain, 'path' => $this->path, 'network_id' => $this->id, ) ); $main_site_id = ! empty( $_sites ) ? array_shift( $_sites ) : 0; update_network_option( $this->id, 'main_site', $main_site_id ); } } $this->blog_id = (string) $main_site_id; return (int) $this->blog_id; } /* * Sets the site name assigned to the network if one has not been populated. * * @since 4.4.0 / private function _set_site_name() { if ( ! empty( $this->site_name ) ) { return; } $default = ucfirst( $this->domain ); $this->site_name = get_network_option( $this->id, 'site_name', $default ); } /* * Sets the cookie domain based on the network domain if one has * not been populated. * * @todo What if the domain of the network doesn't match the current site? * * @since 4.4.0 / private function _set_cookie_domain() { if ( ! empty( $this->cookie_domain ) ) { return; } $this->cookie_domain = $this->domain; if ( str_starts_with( $this->cookie_domain, 'www.' ) ) { $this->cookie_domain = substr( $this->cookie_domain, 4 ); } } /* * Retrieves the closest matching network for a domain and path. * * This will not necessarily return an exact match for a domain and path. Instead, it * breaks the domain and path into pieces that are then used to match the closest * possibility from a query. * * The intent of this method is to match a network during bootstrap for a * requested site address. * * @since 4.4.0 * * @param string $domain Domain to check. * @param string $path Path to check. * @param int\|null $segments Path segments to use. Defaults to null, or the full path. * @return WP_Network\|false Network object if successful. False when no network is found. / public static function get_by_path( $domain = '', $path = '', $segments = null ) { $domains = array( $domain ); $pieces = explode( '.', $domain ); / * It's possible one domain to search is 'com', but it might as well * be 'localhost' or some other locally mapped domain. / while ( array_shift( $pieces ) ) { if ( ! empty( $pieces ) ) { $domains[] = implode( '.', $pieces ); } } / * If we've gotten to this function during normal execution, there is * more than one network installed. At this point, who knows how many * we have. Attempt to optimize for the situation where networks are * only domains, thus meaning paths never need to be considered. * * This is a very basic optimization; anything further could have * drawbacks depending on the setup, so this is best done per-installation. / $using_paths = true; if ( wp_using_ext_object_cache() ) { $using_paths = get_networks( array( 'number' => 1, 'count' => true, 'path__not_in' => '/', ) ); } $paths = array(); if ( $using_paths ) { $path_segments = array_filter( explode( '/', trim( $path, '/' ) ) ); /* * Filters the number of path segments to consider when searching for a site. * * @since 3.9.0 * * @param int\|null $segments The number of path segments to consider. WordPress by default looks at * one path segment. The function default of null only makes sense when you * know the requested path should match a network. * @param string $domain The requested domain. * @param string $path The requested path, in full. / $segments = apply_filters( 'network_by_path_segments_count', $segments, $domain, $path ); if ( ( null !== $segments ) && count( $path_segments ) > $segments ) { $path_segments = array_slice( $path_segments, 0, $segments ); } while ( count( $path_segments ) ) { $paths[] = '/' . implode( '/', $path_segments ) . '/'; array_pop( $path_segments ); } $paths[] = '/'; } /* * Determines a network by its domain and path. * * This allows one to short-circuit the default logic, perhaps by * replacing it with a routine that is more optimal for your setup. * * Return null to avoid the short-circuit. Return false if no network * can be found at the requested domain and path. Otherwise, return * an object from wp_get_network(). * * @since 3.9.0 * * @param null\|false\|WP_Network $network Network value to return by path. Default null * to continue retrieving the network. * @param string $domain The requested domain. * @param string $path The requested path, in full. * @param int\|null $segments The suggested number of paths to consult. * Default null, meaning the entire path was to be consulted. * @param string[] $paths Array of paths to search for, based on `$path` and `$segments`. / $pre = apply_filters( 'pre_get_network_by_path', null, $domain, $path, $segments, $paths ); if ( null !== $pre ) { return $pre; } if ( ! $using_paths ) { $networks = get_networks( array( 'number' => 1, 'orderby' => array( 'domain_length' => 'DESC', ), 'domain__in' => $domains, ) ); if ( ! empty( $networks ) ) { return array_shift( $networks ); } return false; } $networks = get_networks( array( 'orderby' => array( 'domain_length' => 'DESC', 'path_length' => 'DESC', ), 'domain__in' => $domains, 'path__in' => $paths, ) ); / * Domains are sorted by length of domain, then by length of path. * The domain must match for the path to be considered. Otherwise, * a network with the path of / will suffice. */ $found = false; foreach ( $networks as $network ) { if ( ( $network->domain === $domain ) \|\| ( "www.{$network->domain}" === $domain ) ) { if ( in_array( $network->path, $paths, true ) ) { $found = true; break; } } if ( '/' === $network->path ) { $found = true; break; } } if ( true === $found ) { return $network; } return false; } }

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