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3c4b95c1e3
In admin views, specify a response code of 500 when using `wp_die()` to show an expanded message for a broken or missing multisite installation. On front end views, use `dead_db()` rather than `die()` to generate the generic "Error establishing a database connection" message. `dead_db()` sets a status code of 500 by default and allows for the override of this generic error with a `db-error.php` template. Props craig-ralston, jeremyfelt. Fixes #30002. Built from https://develop.svn.wordpress.org/trunk@31657 git-svn-id: http://core.svn.wordpress.org/trunk@31638 1a063a9b-81f0-0310-95a4-ce76da25c4cd
463 lines
15 KiB
PHP
463 lines
15 KiB
PHP
<?php
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/**
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* These functions are needed to load Multisite.
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*
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* @since 3.0.0
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*
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* @package WordPress
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* @subpackage Multisite
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*/
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/**
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* Whether a subdomain configuration is enabled.
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*
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* @since 3.0.0
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*
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* @return bool True if subdomain configuration is enabled, false otherwise.
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*/
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function is_subdomain_install() {
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if ( defined('SUBDOMAIN_INSTALL') )
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return SUBDOMAIN_INSTALL;
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if ( defined('VHOST') && VHOST == 'yes' )
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return true;
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return false;
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}
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/**
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* Returns array of network plugin files to be included in global scope.
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*
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* The default directory is wp-content/plugins. To change the default directory
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* manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL` in `wp-config.php`.
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*
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* @access private
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* @since 3.1.0
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*
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* @return array Files to include.
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*/
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function wp_get_active_network_plugins() {
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$active_plugins = (array) get_site_option( 'active_sitewide_plugins', array() );
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if ( empty( $active_plugins ) )
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return array();
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$plugins = array();
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$active_plugins = array_keys( $active_plugins );
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sort( $active_plugins );
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foreach ( $active_plugins as $plugin ) {
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if ( ! validate_file( $plugin ) // $plugin must validate as file
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&& '.php' == substr( $plugin, -4 ) // $plugin must end with '.php'
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&& file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist
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)
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$plugins[] = WP_PLUGIN_DIR . '/' . $plugin;
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}
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return $plugins;
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}
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/**
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* Checks status of current blog.
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*
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* Checks if the blog is deleted, inactive, archived, or spammed.
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*
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* Dies with a default message if the blog does not pass the check.
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*
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* To change the default message when a blog does not pass the check,
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* use the wp-content/blog-deleted.php, blog-inactive.php and
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* blog-suspended.php drop-ins.
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*
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* @since 3.0.0
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*
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* @return bool|string Returns true on success, or drop-in file to include.
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*/
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function ms_site_check() {
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$blog = get_blog_details();
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/**
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* Filter checking the status of the current blog.
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*
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* @since 3.0.0
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*
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* @param bool null Whether to skip the blog status check. Default null.
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*/
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$check = apply_filters( 'ms_site_check', null );
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if ( null !== $check )
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return true;
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// Allow super admins to see blocked sites
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if ( is_super_admin() )
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return true;
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if ( '1' == $blog->deleted ) {
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if ( file_exists( WP_CONTENT_DIR . '/blog-deleted.php' ) )
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return WP_CONTENT_DIR . '/blog-deleted.php';
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else
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wp_die( __( 'This site is no longer available.' ), '', array( 'response' => 410 ) );
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}
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if ( '2' == $blog->deleted ) {
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if ( file_exists( WP_CONTENT_DIR . '/blog-inactive.php' ) )
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return WP_CONTENT_DIR . '/blog-inactive.php';
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else
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wp_die( sprintf( __( 'This site has not been activated yet. If you are having problems activating your site, please contact <a href="mailto:%1$s">%1$s</a>.' ), str_replace( '@', ' AT ', get_site_option( 'admin_email', 'support@' . get_current_site()->domain ) ) ) );
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}
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if ( $blog->archived == '1' || $blog->spam == '1' ) {
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if ( file_exists( WP_CONTENT_DIR . '/blog-suspended.php' ) )
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return WP_CONTENT_DIR . '/blog-suspended.php';
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else
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wp_die( __( 'This site has been archived or suspended.' ), '', array( 'response' => 410 ) );
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}
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return true;
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}
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/**
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* Retrieve a network object by its domain and path.
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*
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* @since 3.9.0
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*
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* @param string $domain Domain to check.
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* @param string $path Path to check.
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* @param int|null $segments Path segments to use. Defaults to null, or the full path.
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* @return object|bool Network object if successful. False when no network is found.
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*/
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function get_network_by_path( $domain, $path, $segments = null ) {
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global $wpdb;
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$domains = array( $domain );
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$pieces = explode( '.', $domain );
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/*
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* It's possible one domain to search is 'com', but it might as well
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* be 'localhost' or some other locally mapped domain.
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*/
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while ( array_shift( $pieces ) ) {
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if ( $pieces ) {
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$domains[] = implode( '.', $pieces );
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}
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}
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/*
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* If we've gotten to this function during normal execution, there is
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* more than one network installed. At this point, who knows how many
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* we have. Attempt to optimize for the situation where networks are
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* only domains, thus meaning paths never need to be considered.
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*
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* This is a very basic optimization; anything further could have drawbacks
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* depending on the setup, so this is best done per-install.
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*/
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$using_paths = true;
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if ( wp_using_ext_object_cache() ) {
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$using_paths = wp_cache_get( 'networks_have_paths', 'site-options' );
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if ( false === $using_paths ) {
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$using_paths = (bool) $wpdb->get_var( "SELECT id FROM $wpdb->site WHERE path <> '/' LIMIT 1" );
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wp_cache_add( 'networks_have_paths', (int) $using_paths, 'site-options' );
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}
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}
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$paths = array();
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if ( $using_paths ) {
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$path_segments = array_filter( explode( '/', trim( $path, "/" ) ) );
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/**
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* Filter the number of path segments to consider when searching for a site.
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*
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* @since 3.9.0
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*
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* @param int|null $segments The number of path segments to consider. WordPress by default looks at
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* one path segment. The function default of null only makes sense when you
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* know the requested path should match a network.
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* @param string $domain The requested domain.
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* @param string $path The requested path, in full.
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*/
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$segments = apply_filters( 'network_by_path_segments_count', $segments, $domain, $path );
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if ( null !== $segments && count($path_segments ) > $segments ) {
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$path_segments = array_slice( $path_segments, 0, $segments );
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}
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while ( count( $path_segments ) ) {
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$paths[] = '/' . implode( '/', $path_segments ) . '/';
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array_pop( $path_segments );
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}
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$paths[] = '/';
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}
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/**
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* Determine a network by its domain and path.
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*
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* This allows one to short-circuit the default logic, perhaps by
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* replacing it with a routine that is more optimal for your setup.
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*
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* Return null to avoid the short-circuit. Return false if no network
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* can be found at the requested domain and path. Otherwise, return
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* an object from wp_get_network().
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*
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* @since 3.9.0
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*
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* @param null|bool|object $network Network value to return by path.
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* @param string $domain The requested domain.
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* @param string $path The requested path, in full.
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* @param int|null $segments The suggested number of paths to consult.
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* Default null, meaning the entire path was to be consulted.
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* @param array $paths The paths to search for, based on $path and $segments.
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*/
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$pre = apply_filters( 'pre_get_network_by_path', null, $domain, $path, $segments, $paths );
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if ( null !== $pre ) {
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return $pre;
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}
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// @todo Consider additional optimization routes, perhaps as an opt-in for plugins.
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// We already have paths covered. What about how far domains should be drilled down (including www)?
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$search_domains = "'" . implode( "', '", $wpdb->_escape( $domains ) ) . "'";
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if ( ! $using_paths ) {
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$network = $wpdb->get_row( "SELECT id, domain, path FROM $wpdb->site
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WHERE domain IN ($search_domains) ORDER BY CHAR_LENGTH(domain) DESC LIMIT 1" );
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if ( $network ) {
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return wp_get_network( $network );
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}
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return false;
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} else {
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$search_paths = "'" . implode( "', '", $wpdb->_escape( $paths ) ) . "'";
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$networks = $wpdb->get_results( "SELECT id, domain, path FROM $wpdb->site
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WHERE domain IN ($search_domains) AND path IN ($search_paths)
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ORDER BY CHAR_LENGTH(domain) DESC, CHAR_LENGTH(path) DESC" );
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}
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/*
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* Domains are sorted by length of domain, then by length of path.
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* The domain must match for the path to be considered. Otherwise,
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* a network with the path of / will suffice.
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*/
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$found = false;
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foreach ( $networks as $network ) {
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if ( $network->domain === $domain || "www.$network->domain" === $domain ) {
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if ( in_array( $network->path, $paths, true ) ) {
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$found = true;
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break;
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}
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}
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if ( $network->path === '/' ) {
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$found = true;
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break;
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}
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}
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if ( $found ) {
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return wp_get_network( $network );
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}
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return false;
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}
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/**
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* Retrieve an object containing information about the requested network.
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*
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* @since 3.9.0
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*
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* @param object|int $network The network's database row or ID.
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* @return object|bool Object containing network information if found, false if not.
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*/
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function wp_get_network( $network ) {
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global $wpdb;
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if ( ! is_object( $network ) ) {
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$network = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->site WHERE id = %d", $network ) );
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if ( ! $network ) {
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return false;
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}
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}
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return $network;
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}
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/**
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* Retrieve a site object by its domain and path.
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*
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* @since 3.9.0
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*
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* @param string $domain Domain to check.
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* @param string $path Path to check.
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* @param int|null $segments Path segments to use. Defaults to null, or the full path.
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* @return object|bool Site object if successful. False when no site is found.
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*/
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function get_site_by_path( $domain, $path, $segments = null ) {
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global $wpdb;
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$path_segments = array_filter( explode( '/', trim( $path, '/' ) ) );
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/**
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* Filter the number of path segments to consider when searching for a site.
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*
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* @since 3.9.0
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*
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* @param int|null $segments The number of path segments to consider. WordPress by default looks at
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* one path segment following the network path. The function default of
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* null only makes sense when you know the requested path should match a site.
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* @param string $domain The requested domain.
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* @param string $path The requested path, in full.
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*/
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$segments = apply_filters( 'site_by_path_segments_count', $segments, $domain, $path );
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if ( null !== $segments && count( $path_segments ) > $segments ) {
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$path_segments = array_slice( $path_segments, 0, $segments );
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}
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$paths = array();
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while ( count( $path_segments ) ) {
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$paths[] = '/' . implode( '/', $path_segments ) . '/';
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array_pop( $path_segments );
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}
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$paths[] = '/';
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/**
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* Determine a site by its domain and path.
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*
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* This allows one to short-circuit the default logic, perhaps by
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* replacing it with a routine that is more optimal for your setup.
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*
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* Return null to avoid the short-circuit. Return false if no site
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* can be found at the requested domain and path. Otherwise, return
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* a site object.
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*
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* @since 3.9.0
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*
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* @param null|bool|object $site Site value to return by path.
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* @param string $domain The requested domain.
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* @param string $path The requested path, in full.
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* @param int|null $segments The suggested number of paths to consult.
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* Default null, meaning the entire path was to be consulted.
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* @param array $paths The paths to search for, based on $path and $segments.
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*/
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$pre = apply_filters( 'pre_get_site_by_path', null, $domain, $path, $segments, $paths );
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if ( null !== $pre ) {
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return $pre;
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}
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/*
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* @todo
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* get_blog_details(), caching, etc. Consider alternative optimization routes,
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* perhaps as an opt-in for plugins, rather than using the pre_* filter.
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* For example: The segments filter can expand or ignore paths.
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* If persistent caching is enabled, we could query the DB for a path <> '/'
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* then cache whether we can just always ignore paths.
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*/
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// Either www or non-www is supported, not both. If a www domain is requested,
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// query for both to provide the proper redirect.
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$domains = array( $domain );
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if ( 'www.' === substr( $domain, 0, 4 ) ) {
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$domains[] = substr( $domain, 4 );
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$search_domains = "'" . implode( "', '", $wpdb->_escape( $domains ) ) . "'";
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}
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if ( count( $paths ) > 1 ) {
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$search_paths = "'" . implode( "', '", $wpdb->_escape( $paths ) ) . "'";
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}
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if ( count( $domains ) > 1 && count( $paths ) > 1 ) {
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$site = $wpdb->get_row( "SELECT * FROM $wpdb->blogs WHERE domain IN ($search_domains) AND path IN ($search_paths) ORDER BY CHAR_LENGTH(domain) DESC, CHAR_LENGTH(path) DESC LIMIT 1" );
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} elseif ( count( $domains ) > 1 ) {
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$sql = $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE path = %s", $paths[0] );
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$sql .= " AND domain IN ($search_domains) ORDER BY CHAR_LENGTH(domain) DESC LIMIT 1";
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$site = $wpdb->get_row( $sql );
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} elseif ( count( $paths ) > 1 ) {
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$sql = $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE domain = %s", $domains[0] );
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$sql .= " AND path IN ($search_paths) ORDER BY CHAR_LENGTH(path) DESC LIMIT 1";
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$site = $wpdb->get_row( $sql );
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} else {
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$site = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE domain = %s AND path = %s", $domains[0], $paths[0] ) );
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}
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if ( $site ) {
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// @todo get_blog_details()
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return $site;
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}
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return false;
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}
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/**
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* Displays a failure message.
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*
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* Used when a blog's tables do not exist. Checks for a missing $wpdb->site table as well.
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*
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* @access private
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* @since 3.0.0
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*/
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function ms_not_installed() {
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global $wpdb, $domain, $path;
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if ( ! is_admin() ) {
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dead_db();
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}
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wp_load_translations_early();
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$title = __( 'Error establishing a database connection' );
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$msg = '<h1>' . $title . '</h1>';
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$msg .= '<p>' . __( 'If your site does not display, please contact the owner of this network.' ) . '';
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$msg .= ' ' . __( 'If you are the owner of this network please check that MySQL is running properly and all tables are error free.' ) . '</p>';
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$query = $wpdb->prepare( "SHOW TABLES LIKE %s", $wpdb->esc_like( $wpdb->site ) );
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if ( ! $wpdb->get_var( $query ) ) {
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$msg .= '<p>' . sprintf( __( '<strong>Database tables are missing.</strong> This means that MySQL is not running, WordPress was not installed properly, or someone deleted <code>%s</code>. You really should look at your database now.' ), $wpdb->site ) . '</p>';
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} else {
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$msg .= '<p>' . sprintf( __( '<strong>Could not find site <code>%1$s</code>.</strong> Searched for table <code>%2$s</code> in database <code>%3$s</code>. Is that right?' ), rtrim( $domain . $path, '/' ), $wpdb->blogs, DB_NAME ) . '</p>';
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}
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$msg .= '<p><strong>' . __( 'What do I do now?' ) . '</strong> ';
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$msg .= __( 'Read the <a target="_blank" href="http://codex.wordpress.org/Debugging_a_WordPress_Network">bug report</a> page. Some of the guidelines there may help you figure out what went wrong.' );
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$msg .= ' ' . __( 'If you’re still stuck with this message, then check that your database contains the following tables:' ) . '</p><ul>';
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foreach ( $wpdb->tables('global') as $t => $table ) {
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if ( 'sitecategories' == $t )
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continue;
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$msg .= '<li>' . $table . '</li>';
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}
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$msg .= '</ul>';
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wp_die( $msg, $title, array( 'response' => 500 ) );
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}
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/**
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* This deprecated function formerly set the site_name property of the $current_site object.
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*
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* This function simply returns the object, as before.
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* The bootstrap takes care of setting site_name.
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*
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* @access private
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* @since 3.0.0
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* @deprecated 3.9.0 Use get_current_site() instead.
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*
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* @param object $current_site
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* @return object
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*/
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function get_current_site_name( $current_site ) {
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_deprecated_function( __FUNCTION__, '3.9', 'get_current_site()' );
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return $current_site;
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}
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/**
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* This deprecated function managed much of the site and network loading in multisite.
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*
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* The current bootstrap code is now responsible for parsing the site and network load as
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* well as setting the global $current_site object.
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*
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* @access private
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* @since 3.0.0
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* @deprecated 3.9.0
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*
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* @return object
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*/
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function wpmu_current_site() {
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global $current_site;
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_deprecated_function( __FUNCTION__, '3.9' );
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return $current_site;
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}
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