Wordpress 4.6
[autoinstalls/wordpress.git] / wp-includes / ms-settings.php
index 351a926b49d85bddb9f51332775792b715f0bdea..1afa77adc47bc1ba8f6c0cba9f8f7c4b2b49dc13 100644 (file)
  * @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' );
 
@@ -29,12 +41,10 @@ if ( defined( 'SUNRISE' ) ) {
 /** 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 ) ) {
 
-       // 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 );
@@ -50,154 +60,17 @@ if ( !isset( $current_site ) || !isset( $current_blog ) ) {
        }
        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 = new WP_Network( $one_network );
-                               wp_cache_add( 'current_network', $current_site, 'site-options' );
-                       } elseif ( 0 === $wpdb->num_rows ) {
-                               ms_not_installed( $domain, $path );
-                       }
-               }
-               if ( empty( $current_site ) ) {
-                       $current_site = WP_Network::get_by_path( $domain, $path, 1 );
-               }
-
-               if ( empty( $current_site ) ) {
-                       /**
-                        * Fires when a network cannot be found based on the requested domain and path.
-                        *
-                        * At the time of this action, the only recourse is to redirect somewhere
-                        * and exit. If you want to declare a particular network, do so earlier.
-                        *
-                        * @since 4.4.0
-                        *
-                        * @param string $domain       The domain used to search for a network.
-                        * @param string $path         The path used to search for a path.
-                        */
-                       do_action( 'ms_network_not_found', $domain, $path );
-
-                       ms_not_installed( $domain, $path );
-               } 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_Network::get_instance( $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 = WP_Network::get_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_Network::get_instance( $current_blog->site_id );
-       }
-
-       // No network has been found, bail.
-       if ( empty( $current_site ) ) {
-               /** This action is documented in wp-includes/ms-settings.php */
-               do_action( 'ms_network_not_found', $domain, $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 );
-       }
-
-       // During activation of a new subdomain, the requested site does not yet exist.
-       if ( empty( $current_blog ) && wp_installing() ) {
-               $current_blog = new stdClass;
-               $current_blog->blog_id = $blog_id = 1;
-               $current_blog->public = 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( $domain, $path );
-               }
-
-               header( 'Location: ' . $destination );
+       } else {
+               header( 'Location: ' . $bootstrap_result );
                exit;
        }
-
-       // Figure out the current network's main site.
-       if ( empty( $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' );
-               }
-       }
+       unset( $bootstrap_result );
 
        $blog_id = $current_blog->blog_id;
        $public  = $current_blog->public;
@@ -231,3 +104,11 @@ if ( ! $current_blog instanceof WP_Site ) {
 
 // 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' );