<?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

 */

/**

 * Objects representing the current network and current site.

 *

 * These may be populated through a custom `sunrise.php`. If not, then this

 * file will attempt to populate them based on the current request.

 *

 * @global WP_Network $current_site The current network.

 * @global object     $current_blog The current site.

 * @global string     $domain       Deprecated. The domain of the site found on load.

 *                                  Use `get_site()->domain` instead.

 * @global string     $path         Deprecated. The path of the site found on load.

 *                                  Use `get_site()->path` instead.

 * @global int        $site_id      Deprecated. The ID of the network found on load.

 *                                  Use `get_current_network_id()` instead.

 * @global bool       $public       Deprecated. Whether the site found on load is public.

 *                                  Use `get_site()->public` instead.

 *

 * @since 3.0.0

 */

global $current_site, $current_blog, $domain, $path, $site_id, $public;

/** WP_Network class */

require_once( ABSPATH . WPINC . '/class-wp-network.php' );

/** WP_Site class */

require_once( ABSPATH . WPINC . '/class-wp-site.php' );

/** Multisite loader */

require_once( ABSPATH . WPINC . '/ms-load.php' );

/** Default Multisite constants */

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();

// This block will process a request if the current network or current site objects

// have not been populated in the global scope through something like `sunrise.php`.

	$domain = strtolower( stripslashes( $_SERVER['HTTP_HOST'] ) );

	if ( substr( $domain, -3 ) == ':80' ) {

		$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -3 );

	} elseif ( substr( $domain, -4 ) == ':443' ) {

		$_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 );

	$bootstrap_result = ms_load_current_site_and_network( $domain, $path, is_subdomain_install() );

	if ( true === $bootstrap_result ) {

		// `$current_blog` and `$current_site are now populated.

	} elseif ( false === $bootstrap_result ) {

		ms_not_installed( $domain, $path );

	} else {

		header( 'Location: ' . $bootstrap_result );

		exit;

	}

	unset( $bootstrap_result );

	$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 );

$_wp_switched_stack = array();

// need to init cache again after blog_id is set

wp_start_object_cache();

if ( ! $current_site instanceof WP_Network ) {

	$current_site = new WP_Network( $current_site );

}

if ( ! $current_blog instanceof WP_Site ) {

	$current_blog = new WP_Site( $current_blog );

}

// Define upload directory constants

ms_upload_constants();

/**

 * Fires after the current site and network have been detected and loaded

 * in multisite's bootstrap.

 *

 * @since 4.6.0

 */

do_action( 'ms_loaded' );