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