227 lines
8.8 KiB
PHP
227 lines
8.8 KiB
PHP
<?php
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/**
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* Used to set up and fix common variables and include
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* the Multisite procedural and class library.
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*
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* Allows for some configuration in wp-config.php (see ms-default-constants.php)
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*
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* @package WordPress
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* @subpackage Multisite
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* @since 3.0.0
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*/
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/** WP_Network class */
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require_once( ABSPATH . WPINC . '/class-wp-network.php' );
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/** Multisite loader */
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require_once( ABSPATH . WPINC . '/ms-load.php' );
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/** Default Multisite constants */
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require_once( ABSPATH . WPINC . '/ms-default-constants.php' );
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if ( defined( 'SUNRISE' ) ) {
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include_once( WP_CONTENT_DIR . '/sunrise.php' );
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}
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/** Check for and define SUBDOMAIN_INSTALL and the deprecated VHOST constant. */
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ms_subdomain_constants();
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if ( !isset( $current_site ) || !isset( $current_blog ) ) {
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// Given the domain and path, let's try to identify the network and site.
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// Usually, it's easier to query the site first, which declares its network.
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// In limited situations, though, we either can or must find the network first.
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$domain = strtolower( stripslashes( $_SERVER['HTTP_HOST'] ) );
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if ( substr( $domain, -3 ) == ':80' ) {
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$domain = substr( $domain, 0, -3 );
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$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -3 );
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} elseif ( substr( $domain, -4 ) == ':443' ) {
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$domain = substr( $domain, 0, -4 );
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$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -4 );
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}
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$path = stripslashes( $_SERVER['REQUEST_URI'] );
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if ( is_admin() ) {
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$path = preg_replace( '#(.*)/wp-admin/.*#', '$1/', $path );
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}
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list( $path ) = explode( '?', $path );
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// If the network is defined in wp-config.php, we can simply use that.
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if ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) ) {
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$current_site = new stdClass;
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$current_site->id = defined( 'SITE_ID_CURRENT_SITE' ) ? SITE_ID_CURRENT_SITE : 1;
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$current_site->domain = DOMAIN_CURRENT_SITE;
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$current_site->path = PATH_CURRENT_SITE;
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if ( defined( 'BLOG_ID_CURRENT_SITE' ) ) {
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$current_site->blog_id = BLOG_ID_CURRENT_SITE;
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} elseif ( defined( 'BLOGID_CURRENT_SITE' ) ) { // deprecated.
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$current_site->blog_id = BLOGID_CURRENT_SITE;
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}
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if ( 0 === strcasecmp( $current_site->domain, $domain ) && 0 === strcasecmp( $current_site->path, $path ) ) {
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$current_blog = get_site_by_path( $domain, $path );
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} elseif ( '/' !== $current_site->path && 0 === strcasecmp( $current_site->domain, $domain ) && 0 === stripos( $path, $current_site->path ) ) {
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// If the current network has a path and also matches the domain and path of the request,
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// we need to look for a site using the first path segment following the network's path.
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$current_blog = get_site_by_path( $domain, $path, 1 + count( explode( '/', trim( $current_site->path, '/' ) ) ) );
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} else {
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// Otherwise, use the first path segment (as usual).
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$current_blog = get_site_by_path( $domain, $path, 1 );
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}
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} elseif ( ! is_subdomain_install() ) {
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/*
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* A "subdomain" install can be re-interpreted to mean "can support any domain".
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* If we're not dealing with one of these installs, then the important part is determining
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* the network first, because we need the network's path to identify any sites.
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*/
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if ( ! $current_site = wp_cache_get( 'current_network', 'site-options' ) ) {
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// Are there even two networks installed?
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$one_network = $wpdb->get_row( "SELECT * FROM $wpdb->site LIMIT 2" ); // [sic]
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if ( 1 === $wpdb->num_rows ) {
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$current_site = new WP_Network( $one_network );
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wp_cache_add( 'current_network', $current_site, 'site-options' );
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} elseif ( 0 === $wpdb->num_rows ) {
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ms_not_installed( $domain, $path );
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}
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}
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if ( empty( $current_site ) ) {
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$current_site = WP_Network::get_by_path( $domain, $path, 1 );
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}
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if ( empty( $current_site ) ) {
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/**
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* Fires when a network cannot be found based on the requested domain and path.
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*
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* At the time of this action, the only recourse is to redirect somewhere
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* and exit. If you want to declare a particular network, do so earlier.
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*
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* @since 4.4.0
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*
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* @param string $domain The domain used to search for a network.
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* @param string $path The path used to search for a path.
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*/
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do_action( 'ms_network_not_found', $domain, $path );
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ms_not_installed( $domain, $path );
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} elseif ( $path === $current_site->path ) {
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$current_blog = get_site_by_path( $domain, $path );
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} else {
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// Search the network path + one more path segment (on top of the network path).
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$current_blog = get_site_by_path( $domain, $path, substr_count( $current_site->path, '/' ) );
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}
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} else {
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// Find the site by the domain and at most the first path segment.
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$current_blog = get_site_by_path( $domain, $path, 1 );
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if ( $current_blog ) {
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$current_site = WP_Network::get_instance( $current_blog->site_id ? $current_blog->site_id : 1 );
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} else {
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// If you don't have a site with the same domain/path as a network, you're pretty screwed, but:
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$current_site = WP_Network::get_by_path( $domain, $path, 1 );
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}
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}
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// The network declared by the site trumps any constants.
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if ( $current_blog && $current_blog->site_id != $current_site->id ) {
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$current_site = WP_Network::get_instance( $current_blog->site_id );
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}
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// No network has been found, bail.
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if ( empty( $current_site ) ) {
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/** This action is documented in wp-includes/ms-settings.php */
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do_action( 'ms_network_not_found', $domain, $path );
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ms_not_installed( $domain, $path );
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}
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// During activation of a new subdomain, the requested site does not yet exist.
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if ( empty( $current_blog ) && wp_installing() ) {
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$current_blog = new stdClass;
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$current_blog->blog_id = $blog_id = 1;
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$current_blog->public = 1;
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}
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// No site has been found, bail.
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if ( empty( $current_blog ) ) {
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// We're going to redirect to the network URL, with some possible modifications.
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$scheme = is_ssl() ? 'https' : 'http';
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$destination = "$scheme://{$current_site->domain}{$current_site->path}";
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/**
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* Fires when a network can be determined but a site cannot.
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*
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* At the time of this action, the only recourse is to redirect somewhere
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* and exit. If you want to declare a particular site, do so earlier.
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*
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* @since 3.9.0
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*
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* @param object $current_site The network that had been determined.
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* @param string $domain The domain used to search for a site.
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* @param string $path The path used to search for a site.
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*/
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do_action( 'ms_site_not_found', $current_site, $domain, $path );
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if ( is_subdomain_install() && ! defined( 'NOBLOGREDIRECT' ) ) {
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// For a "subdomain" install, redirect to the signup form specifically.
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$destination .= 'wp-signup.php?new=' . str_replace( '.' . $current_site->domain, '', $domain );
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} elseif ( is_subdomain_install() ) {
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// For a "subdomain" install, the NOBLOGREDIRECT constant
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// can be used to avoid a redirect to the signup form.
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// Using the ms_site_not_found action is preferred to the constant.
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if ( '%siteurl%' !== NOBLOGREDIRECT ) {
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$destination = NOBLOGREDIRECT;
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}
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} elseif ( 0 === strcasecmp( $current_site->domain, $domain ) ) {
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/*
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* If the domain we were searching for matches the network's domain,
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* it's no use redirecting back to ourselves -- it'll cause a loop.
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* As we couldn't find a site, we're simply not installed.
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*/
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ms_not_installed( $domain, $path );
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}
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header( 'Location: ' . $destination );
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exit;
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}
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// Figure out the current network's main site.
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if ( empty( $current_site->blog_id ) ) {
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if ( $current_blog->domain === $current_site->domain && $current_blog->path === $current_site->path ) {
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$current_site->blog_id = $current_blog->blog_id;
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} elseif ( ! $current_site->blog_id = wp_cache_get( 'network:' . $current_site->id . ':main_site', 'site-options' ) ) {
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$current_site->blog_id = $wpdb->get_var( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s",
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$current_site->domain, $current_site->path ) );
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wp_cache_add( 'network:' . $current_site->id . ':main_site', $current_site->blog_id, 'site-options' );
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}
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}
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$blog_id = $current_blog->blog_id;
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$public = $current_blog->public;
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if ( empty( $current_blog->site_id ) ) {
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// This dates to [MU134] and shouldn't be relevant anymore,
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// but it could be possible for arguments passed to insert_blog() etc.
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$current_blog->site_id = 1;
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}
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$site_id = $current_blog->site_id;
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wp_load_core_site_options( $site_id );
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}
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$wpdb->set_prefix( $table_prefix, false ); // $table_prefix can be set in sunrise.php
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$wpdb->set_blog_id( $current_blog->blog_id, $current_blog->site_id );
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$table_prefix = $wpdb->get_blog_prefix();
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$_wp_switched_stack = array();
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$switched = false;
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// need to init cache again after blog_id is set
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wp_start_object_cache();
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if ( ! $current_site instanceof WP_Network ) {
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$current_site = new WP_Network( $current_site );
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}
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// Define upload directory constants
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ms_upload_constants();
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