WordPress/wp-includes/class-wp-network.php

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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
*/
Code Modernization: Add `AllowDynamicProperties` attribute to all (parent) classes. Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0. There are a number of ways to mitigate this: * If it is an accidental typo for a declared property: fix the typo. * For known properties: declare them on the class. * For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in. * For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes. Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1. To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP. The logic used for this commit is as follows: * If a class already has the attribute: no action needed. * If a class does not `extend`: add the attribute. * If a class does `extend`: - If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties). - If it extends a PHP native class: add the attribute. - If it extends a class from one of WP's external dependencies: add the attribute. * In all other cases: no action — the attribute should not be needed as child classes inherit from the parent. Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details. This commit only affects classes in the `src` directory of WordPress core. * Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033. * While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately. Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties]. Follow-up to [53922]. Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath. See #56513, #56034. Built from https://develop.svn.wordpress.org/trunk@54133 git-svn-id: http://core.svn.wordpress.org/trunk@53692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-09-12 17:47:14 +02:00
#[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;
}
}