WordPress 4.2.4-scripts
[autoinstalls/wordpress.git] / wp-includes / ms-settings.php
index 5dd460e301ad57298a007ec044a10ca9cd9670b6..7b35e7616fa5c54d02e19e036a13778384eb6033 100644 (file)
  */
 
 /** Include Multisite initialization functions */
-require( ABSPATH . WPINC . '/ms-load.php' );
-require( ABSPATH . WPINC . '/ms-default-constants.php' );
+require_once( ABSPATH . WPINC . '/ms-load.php' );
+require_once( ABSPATH . WPINC . '/ms-default-constants.php' );
 
-if ( defined( 'SUNRISE' ) )
+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 ) ) {
 
-       $domain = addslashes( $_SERVER['HTTP_HOST'] );
-       if ( false !== strpos( $domain, ':' ) ) {
-               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 );
+       // 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 {
-                       wp_load_translations_early();
-                       wp_die( __( 'Multisite only works without the port number in the URL.' ) );
+                       // 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 );
                }
-       }
 
-       $domain = rtrim( $domain, '.' );
-       $cookie_domain = $domain;
-       if ( substr( $cookie_domain, 0, 4 ) == 'www.' )
-               $cookie_domain = substr( $cookie_domain, 4 );
-
-       $path = preg_replace( '|([a-z0-9-]+.php.*)|', '', $_SERVER['REQUEST_URI'] );
-       $path = str_replace ( '/wp-admin/', '/', $path );
-       $path = preg_replace( '|(/[a-z0-9-]+?/).*|', '$1', $path );
-
-       $current_site = wpmu_current_site();
-       if ( ! isset( $current_site->blog_id ) )
-               $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 ) );
-
-       if ( is_subdomain_install() ) {
-               $current_blog = wp_cache_get( 'current_blog_' . $domain, 'site-options' );
-               if ( !$current_blog ) {
-                       $current_blog = get_blog_details( array( 'domain' => $domain ), false );
-                       if ( $current_blog )
-                               wp_cache_set( 'current_blog_' . $domain, $current_blog, 'site-options' );
+               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, '/' ) );
                }
-               if ( $current_blog && $current_blog->site_id != $current_site->id ) {
-                       $current_site = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->site WHERE id = %d", $current_blog->site_id ) );
-                       if ( ! isset( $current_site->blog_id ) )
-                               $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 ) );
-               } else
-                       $blogname = substr( $domain, 0, strpos( $domain, '.' ) );
        } else {
-               $blogname = htmlspecialchars( substr( $_SERVER[ 'REQUEST_URI' ], strlen( $path ) ) );
-               if ( false !== strpos( $blogname, '/' ) )
-                       $blogname = substr( $blogname, 0, strpos( $blogname, '/' ) );
-               if ( false !== strpos( $blogname, '?' ) )
-                       $blogname = substr( $blogname, 0, strpos( $blogname, '?' ) );
-               $reserved_blognames = array( 'page', 'comments', 'blog', 'wp-admin', 'wp-includes', 'wp-content', 'files', 'feed' );
-               if ( $blogname != '' && ! in_array( $blogname, $reserved_blognames ) && ! is_file( $blogname ) )
-                       $path .= $blogname . '/';
-               $current_blog = wp_cache_get( 'current_blog_' . $domain . $path, 'site-options' );
-               if ( ! $current_blog ) {
-                       $current_blog = get_blog_details( array( 'domain' => $domain, 'path' => $path ), false );
-                       if ( $current_blog )
-                               wp_cache_set( 'current_blog_' . $domain . $path, $current_blog, 'site-options' );
+               // 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, $path, 1 );
                }
-               unset($reserved_blognames);
        }
 
-       if ( ! defined( 'WP_INSTALLING' ) && is_subdomain_install() && ! is_object( $current_blog ) ) {
-               if ( defined( 'NOBLOGREDIRECT' ) ) {
-                       $destination = NOBLOGREDIRECT;
-                       if ( '%siteurl%' == $destination )
-                               $destination = "http://" . $current_site->domain . $current_site->path;
-               } else {
-                       $destination = 'http://' . $current_site->domain . $current_site->path . 'wp-signup.php?new=' . str_replace( '.' . $current_site->domain, '', $domain );
+       // 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 );
-               die();
+               exit;
        }
 
-       if ( ! defined( 'WP_INSTALLING' ) ) {
-               if ( $current_site && ! $current_blog ) {
-                       if ( $current_site->domain != $_SERVER[ 'HTTP_HOST' ] ) {
-                               header( 'Location: http://' . $current_site->domain . $current_site->path );
-                               exit;
-                       }
-                       $current_blog = get_blog_details( array( 'domain' => $current_site->domain, 'path' => $current_site->path ), false );
+       // @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' );
                }
-               if ( ! $current_blog || ! $current_site )
-                       ms_not_installed();
        }
 
        $blog_id = $current_blog->blog_id;
        $public  = $current_blog->public;
 
-       if ( empty( $current_blog->site_id ) )
+       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;
-
-       $current_site = get_current_site_name( $current_site );
-
-       if ( ! $blog_id ) {
-               if ( defined( 'WP_INSTALLING' ) ) {
-                       $current_blog->blog_id = $blog_id = 1;
-               } else {
-                       wp_load_translations_early();
-                       $msg = ! $wpdb->get_var( "SHOW TABLES LIKE '$wpdb->site'" ) ? ' ' . __( 'Database tables are missing.' ) : '';
-                       wp_die( __( 'No site by that name on this system.' ) . $msg );
-               }
        }
+
+       $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();