WordPress/wp-includes/ms-settings.php

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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
*/
/**
* 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.
* @since 3.0.0
*/
global $current_site, $current_blog;
/** 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`.
if ( !isset( $current_site ) || !isset( $current_blog ) ) {
$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 );
$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 );
$table_prefix = $wpdb->get_blog_prefix();
switch_to_blog() and restore_current_blog() housekeeping. wp-includes/admin-bar.php: * Replace get_admin_url() and get_home_url() with admin_url() and home_url() and place them inside a switch/restore. Likewise replace current_user_can_for_blog() with current_user_can(). This avoids doing multiple switch restores. wp-includes/ms-blogs.php: * Deprecate the $validate argument to switch_to_blog(). This avoids a not very necessary call to get_blog_details(), possibly saving a few queries. * Use $_wp_switched and $_wp_switched_stack instead of $switched and $switched_stack to make it less likely these globals will be stomped. * Use GLOBALS to access blog_id and other globals. I've preferred this style lately since it makes it obvious a global is being used and avoids global blog_id being stomped by a local variable. * Lose some is_object() checks. wp_get_current_user() always returns an object, for example. * Call the new WP_Roles::reinit() method. wp-includes/class-wp-xmlrpc-server.php: * Replace current_user_can_for_blog() with current_user_can() and move it inside the switch/restore pair. This eliminates a switch/restore. wp-includes/capabilities.php: * Use array_keys() instead of $role => $data since $data is unused. I *think* this is a bit faster. * Introduce WP_Roles::reinit(). This reinitializes WP_Roles and is used after switch_to_blog() has already update the blog ID in the wpdb object. If a global roles array is being used instead of the db, reinit is skipped. * current_user_can_for_blog() now does a switch/restore. It didn't before meaning it could be reinitializing the user with the wrong role information for the current blog. wp-includes/ms-settings.php: * Define $_wp_switched_stack and $_wp_switched. This way switch_to_blog() and restore_current_blog() can rely on it being set. wp-settings.php: * Instantiate the WP_Roles global. This was it is always defined during init. To remove the WP_Roles checks from WP_Role and WP_User this would probably have to move before plugins are loaded, which might not be a good thing. wp-includes/functions.php: * Update wp_upload_dir() to reference _wp_switched. git-svn-id: http://core.svn.wordpress.org/trunk@21485 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2012-08-09 18:28:15 +02:00
$_wp_switched_stack = array();
$switched = false;
// 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();