265 lines
6.2 KiB
PHP
265 lines
6.2 KiB
PHP
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<?php
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/**
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* Sitemaps: WP_Sitemaps class
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*
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* This is the main class integrating all other classes.
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*
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* @package WordPress
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* @subpackage Sitemaps
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* @since 5.5.0
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*/
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/**
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* Class WP_Sitemaps.
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*
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* @since 5.5.0
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*/
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#[AllowDynamicProperties]
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class WP_Sitemaps {
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/**
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* The main index of supported sitemaps.
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*
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* @since 5.5.0
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*
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* @var WP_Sitemaps_Index
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*/
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public $index;
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/**
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* The main registry of supported sitemaps.
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*
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* @since 5.5.0
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*
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* @var WP_Sitemaps_Registry
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*/
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public $registry;
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/**
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* An instance of the renderer class.
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*
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* @since 5.5.0
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*
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* @var WP_Sitemaps_Renderer
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*/
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public $renderer;
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/**
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* WP_Sitemaps constructor.
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*
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* @since 5.5.0
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*/
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public function __construct() {
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$this->registry = new WP_Sitemaps_Registry();
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$this->renderer = new WP_Sitemaps_Renderer();
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$this->index = new WP_Sitemaps_Index( $this->registry );
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}
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/**
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* Initiates all sitemap functionality.
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*
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* If sitemaps are disabled, only the rewrite rules will be registered
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* by this method, in order to properly send 404s.
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*
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* @since 5.5.0
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*/
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public function init() {
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// These will all fire on the init hook.
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$this->register_rewrites();
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add_action( 'template_redirect', array( $this, 'render_sitemaps' ) );
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if ( ! $this->sitemaps_enabled() ) {
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return;
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}
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$this->register_sitemaps();
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// Add additional action callbacks.
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add_filter( 'pre_handle_404', array( $this, 'redirect_sitemapxml' ), 10, 2 );
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add_filter( 'robots_txt', array( $this, 'add_robots' ), 0, 2 );
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}
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/**
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* Determines whether sitemaps are enabled or not.
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*
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* @since 5.5.0
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*
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* @return bool Whether sitemaps are enabled.
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*/
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public function sitemaps_enabled() {
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$is_enabled = (bool) get_option( 'blog_public' );
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/**
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* Filters whether XML Sitemaps are enabled or not.
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*
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* When XML Sitemaps are disabled via this filter, rewrite rules are still
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* in place to ensure a 404 is returned.
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*
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* @see WP_Sitemaps::register_rewrites()
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*
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* @since 5.5.0
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*
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* @param bool $is_enabled Whether XML Sitemaps are enabled or not.
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* Defaults to true for public sites.
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*/
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return (bool) apply_filters( 'wp_sitemaps_enabled', $is_enabled );
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}
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/**
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* Registers and sets up the functionality for all supported sitemaps.
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*
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* @since 5.5.0
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*/
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public function register_sitemaps() {
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$providers = array(
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'posts' => new WP_Sitemaps_Posts(),
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'taxonomies' => new WP_Sitemaps_Taxonomies(),
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'users' => new WP_Sitemaps_Users(),
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);
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/* @var WP_Sitemaps_Provider $provider */
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foreach ( $providers as $name => $provider ) {
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$this->registry->add_provider( $name, $provider );
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}
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}
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/**
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* Registers sitemap rewrite tags and routing rules.
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*
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* @since 5.5.0
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*/
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public function register_rewrites() {
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// Add rewrite tags.
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add_rewrite_tag( '%sitemap%', '([^?]+)' );
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add_rewrite_tag( '%sitemap-subtype%', '([^?]+)' );
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// Register index route.
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add_rewrite_rule( '^wp-sitemap\.xml$', 'index.php?sitemap=index', 'top' );
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// Register rewrites for the XSL stylesheet.
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add_rewrite_tag( '%sitemap-stylesheet%', '([^?]+)' );
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add_rewrite_rule( '^wp-sitemap\.xsl$', 'index.php?sitemap-stylesheet=sitemap', 'top' );
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add_rewrite_rule( '^wp-sitemap-index\.xsl$', 'index.php?sitemap-stylesheet=index', 'top' );
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// Register routes for providers.
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add_rewrite_rule(
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'^wp-sitemap-([a-z]+?)-([a-z\d_-]+?)-(\d+?)\.xml$',
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'index.php?sitemap=$matches[1]&sitemap-subtype=$matches[2]&paged=$matches[3]',
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'top'
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);
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add_rewrite_rule(
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'^wp-sitemap-([a-z]+?)-(\d+?)\.xml$',
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'index.php?sitemap=$matches[1]&paged=$matches[2]',
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'top'
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);
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}
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/**
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* Renders sitemap templates based on rewrite rules.
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*
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* @since 5.5.0
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*
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* @global WP_Query $wp_query WordPress Query object.
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*/
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public function render_sitemaps() {
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global $wp_query;
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$sitemap = sanitize_text_field( get_query_var( 'sitemap' ) );
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$object_subtype = sanitize_text_field( get_query_var( 'sitemap-subtype' ) );
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$stylesheet_type = sanitize_text_field( get_query_var( 'sitemap-stylesheet' ) );
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$paged = absint( get_query_var( 'paged' ) );
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// Bail early if this isn't a sitemap or stylesheet route.
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if ( ! ( $sitemap || $stylesheet_type ) ) {
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return;
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}
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if ( ! $this->sitemaps_enabled() ) {
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$wp_query->set_404();
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status_header( 404 );
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return;
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}
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// Render stylesheet if this is stylesheet route.
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if ( $stylesheet_type ) {
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$stylesheet = new WP_Sitemaps_Stylesheet();
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$stylesheet->render_stylesheet( $stylesheet_type );
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exit;
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}
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// Render the index.
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if ( 'index' === $sitemap ) {
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$sitemap_list = $this->index->get_sitemap_list();
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$this->renderer->render_index( $sitemap_list );
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exit;
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}
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$provider = $this->registry->get_provider( $sitemap );
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if ( ! $provider ) {
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return;
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}
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if ( empty( $paged ) ) {
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$paged = 1;
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}
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$url_list = $provider->get_url_list( $paged, $object_subtype );
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// Force a 404 and bail early if no URLs are present.
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if ( empty( $url_list ) ) {
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$wp_query->set_404();
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status_header( 404 );
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return;
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}
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$this->renderer->render_sitemap( $url_list );
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exit;
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}
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/**
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* Redirects a URL to the wp-sitemap.xml
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*
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* @since 5.5.0
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*
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* @param bool $bypass Pass-through of the pre_handle_404 filter value.
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* @param WP_Query $query The WP_Query object.
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* @return bool Bypass value.
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*/
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public function redirect_sitemapxml( $bypass, $query ) {
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// If a plugin has already utilized the pre_handle_404 function, return without action to avoid conflicts.
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if ( $bypass ) {
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return $bypass;
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}
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// 'pagename' is for most permalink types, name is for when the %postname% is used as a top-level field.
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if ( 'sitemap-xml' === $query->get( 'pagename' )
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|| 'sitemap-xml' === $query->get( 'name' )
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) {
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wp_safe_redirect( $this->index->get_index_url() );
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exit();
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}
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return $bypass;
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}
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/**
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* Adds the sitemap index to robots.txt.
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*
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* @since 5.5.0
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*
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* @param string $output robots.txt output.
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* @param bool $is_public Whether the site is public.
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* @return string The robots.txt output.
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*/
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public function add_robots( $output, $is_public ) {
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if ( $is_public ) {
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$output .= "\nSitemap: " . esc_url( $this->index->get_index_url() ) . "\n";
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}
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return $output;
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}
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}
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