Wordpress/wp-includes/ms-load.php

<?php
/**
 * Used to setup and fix common variables and include
 * the WordPress procedural and class library.
 *
 * You should not have to change this file and allows
 * for some configuration in wp-config.php.
 *
 * @since 3.0
 *
 * @package WordPress
 */
if( defined( 'SUNRISE' ) )
	include_once( WP_CONTENT_DIR . '/sunrise.php' );

    require (ABSPATH . WPINC . '/ms-settings.php');
$wpdb->blogid           = $current_blog->blog_id;
$wpdb->siteid           = $current_blog->site_id;
$wpdb->set_prefix($table_prefix); // set up blog tables
$table_prefix = $table_prefix . $blog_id . '_';

// Fix empty PHP_SELF
$PHP_SELF = $_SERVER['PHP_SELF'];
if ( empty($PHP_SELF) || ( empty($PHP_SELF) && constant( 'VHOST' ) == 'no' && $current_blog->path != '/' ) )
	$_SERVER['PHP_SELF'] = $PHP_SELF = preg_replace("/(\?.*)?$/",'',$_SERVER["REQUEST_URI"]);

wp_cache_init(); // need to init cache again after blog_id is set
if ( function_exists('wp_cache_add_global_groups') ) { // need to add these again. Yes, it's an ugly hack
	wp_cache_add_global_groups(array ('users', 'userlogins', 'usermeta', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss'));
	wp_cache_add_non_persistent_groups(array( 'comment', 'counts', 'plugins' ));
}

if( !defined( "UPLOADBLOGSDIR" ) )
	define( "UPLOADBLOGSDIR", 'wp-content/blogs.dir' );

if( !defined( "UPLOADS" ) )
	define( "UPLOADS", UPLOADBLOGSDIR . "/{$wpdb->blogid}/files/" );

if( !defined( "BLOGUPLOADDIR" ) )
	define( "BLOGUPLOADDIR", WP_CONTENT_DIR . "/blogs.dir/{$wpdb->blogid}/files/" );

function ms_network_settings() {
        global $wpdb, $current_site, $cookiehash;

        if( !isset($current_site->site_name) )
                $current_site->site_name = get_site_option('site_name');

        if( $current_site->site_name == false )
                $current_site->site_name = ucfirst( $current_site->domain );

        if ( ! defined('WP_INSTALLING') ) {
                // Used to guarantee unique hash cookies
                if ( !isset($cookiehash) )
                        $cookiehash = '';

                /**
                 * Used to guarantee unique hash cookies
                 * @since 1.5
                 */
                if ( !defined('COOKIEHASH') )
                        define( 'COOKIEHASH', $cookiehash );
        }

        $wpdb->hide_errors();
}

function ms_network_plugins() {
        $wpmu_sitewide_plugins = (array) maybe_unserialize( get_site_option( 'wpmu_sitewide_plugins' ) );
        foreach( $wpmu_sitewide_plugins as $plugin_file => $activation_time ) {
                if ( !$plugin_file )
                        continue;

                if ( !file_exists( WP_PLUGIN_DIR . '/' . $plugin_file ) ) {
                        $deleted_sitewide_plugins[] = $plugin_file;
                } else {
                        include_once( WP_PLUGIN_DIR . '/' . $plugin_file );
                }
        }

        if ( isset( $deleted_sitewide_plugins ) ) {
                $active_sitewide_plugins = maybe_unserialize( get_site_option( 'active_sitewide_plugins' ) );

                /* Remove any deleted plugins from the wpmu_sitewide_plugins array */
                foreach( $deleted_sitewide_plugins as $plugin_file ) {
                        unset( $wpmu_sitewide_plugins[$plugin_file] );
                        unset( $active_sitewide_plugins[$plugin_file] );
                }

                update_site_option( 'wpmu_sitewide_plugins', $wpmu_sitewide_plugins );
                update_site_option( 'active_sitewide_plugins', $wpmu_sitewide_plugins );
        }

}

function ms_site_check() {
        global $wpdb, $current_blog;

        $wpdb->show_errors();

        if ( '1' == $current_blog->deleted ) {
                if ( file_exists( WP_CONTENT_DIR . '/blog-deleted.php' ) ) {
                        require_once( WP_CONTENT_DIR . '/blog-deleted.php' );
                        die();
                } else {
                        header('HTTP/1.1 410 Gone');
                        graceful_fail(__('This user has elected to delete their account and the content is no longer available.'));
                }
        }

        if ( '2' == $current_blog->deleted ) {
                if ( file_exists( WP_CONTENT_DIR . '/blog-inactive.php' ) ) {
                        require_once( WP_CONTENT_DIR . '/blog-inactive.php' );
                        die();
                } else {
                        graceful_fail( sprintf( __( 'This blog has not been activated yet. If you are having problems activating your blog, please contact <a href="mailto:%1$s">%1$s</a>.' ), str_replace( '@', ' AT ', get_site_option( 'admin_email', "support@{$current_site->domain}" ) ) ) );
                }
        }

        if( $current_blog->archived == '1' || $current_blog->spam == '1' ) {
                if ( file_exists( WP_CONTENT_DIR . '/blog-suspended.php' ) ) {
                        require_once( WP_CONTENT_DIR . '/blog-suspended.php' );
                        die();
                } else {
                        header('HTTP/1.1 410 Gone');
                        graceful_fail(__('This blog has been archived or suspended.'));
                }
        }
}

function ms_network_cookies() {
        global $current_site;
        /**
         * It is possible to define this in wp-config.php
         * @since 1.2.0
         */
        if ( !defined('COOKIEPATH') )
                define('COOKIEPATH', $current_site->path );

        /**
         * It is possible to define this in wp-config.php
         * @since 1.5.0
         */
        if ( !defined('SITECOOKIEPATH') )
                define('SITECOOKIEPATH', $current_site->path );

        /**
         * It is possible to define this in wp-config.php
         * @since 2.6.0
         */
        if ( !defined('ADMIN_COOKIE_PATH') ) {
                if( !is_subdomain_install() ) {
                        define( 'ADMIN_COOKIE_PATH', SITECOOKIEPATH );
                } else {
                        define( 'ADMIN_COOKIE_PATH', SITECOOKIEPATH . 'wp-admin' );
                }
        }
        /**
         * It is possible to define this in wp-config.php
         * @since 2.0.0
         */
        if ( !defined('COOKIE_DOMAIN') )
                define('COOKIE_DOMAIN', '.' . $current_site->domain);
}
?>