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<?php namespace AIOSEO\Plugin\Common; // Exit if accessed directly. if ( ! defined( 'ABSPATH' ) ) { exit; } /** * Adds content before or after posts in the RSS feed. * * @since 4.0.0 */ class Rss { /** * Class constructor. * * @since 4.0.0 */ public function __construct() { if ( is_admin() ) { return; } add_filter( 'the_content_feed', [ $this, 'addRssContent' ] ); add_filter( 'the_excerpt_rss', [ $this, 'addRssContentExcerpt' ] ); // If advanced RSS settings are not enabled, return early. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->enable ) { return; } // Control which feed links are visible. remove_action( 'wp_head', 'feed_links_extra', 3 ); add_action( 'wp_head', [ $this, 'rssFeedLinks' ], 3 ); if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->global ) { add_filter( 'feed_links_show_posts_feed', '__return_false' ); } if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->globalComments ) { add_filter( 'feed_links_show_comments_feed', '__return_false' ); } // Disable feeds that we no longer want on this site. add_action( 'wp', [ $this, 'disableFeeds' ], -1000 ); } /** * Adds content before or after the RSS excerpt. * * @since 4.0.0 * * @param string $content The post excerpt. * @return string The post excerpt with prepended/appended content. */ public function addRssContentExcerpt( $content ) { return $this->addRssContent( $content, 'excerpt' ); } /** * Adds content before or after the RSS post. * * @since 4.0.0 * * @param string $content The post content. * @param string $type Type of feed. * @return string The post content with prepended/appended content. */ public function addRssContent( $content, $type = 'complete' ) { $content = trim( $content ); if ( empty( $content ) ) { return ''; } if ( is_feed() ) { global $wp_query; $isHome = is_home(); if ( $isHome ) { // If this feed is for the static blog page, we must temporarily set "is_home" to false. // Otherwise any getPost() calls will return the blog page object for every post in the feed. $wp_query->is_home = false; } $before = aioseo()->tags->replaceTags( aioseo()->options->rssContent->before, get_the_ID() ); $after = aioseo()->tags->replaceTags( aioseo()->options->rssContent->after, get_the_ID() ); if ( $before || $after ) { if ( 'excerpt' === $type ) { $content = wpautop( $content ); } $content = aioseo()->helpers->decodeHtmlEntities( $before ) . $content . aioseo()->helpers->decodeHtmlEntities( $after ); } // Set back to the original value. $wp_query->is_home = $isHome; } return $content; } /** * Disable feeds we don't want to have on this site. * * @since 4.2.1 * * @return void */ public function disableFeeds() { // This should only run if we are trying to parse a feed. if ( ! is_feed() ) { return; } $rssFeed = get_query_var( 'feed' ); $homeUrl = get_home_url(); // Atom feed. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->atom && 'atom' === $rssFeed ) { $this->redirectRssFeed( $homeUrl ); } // RDF/RSS 1.0 feed. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->rdf && 'rdf' === $rssFeed ) { $this->redirectRssFeed( $homeUrl ); } // Global feed. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->global && [ 'feed' => 'feed' ] === $GLOBALS['wp_query']->query ) { $this->redirectRssFeed( $homeUrl ); } // Global comments feed. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->globalComments && is_comment_feed() && ! ( is_singular() || is_attachment() ) ) { $this->redirectRssFeed( $homeUrl ); } // Static blog page feed. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->staticBlogPage && aioseo()->helpers->getBlogPageId() === get_queried_object_id() ) { $this->redirectRssFeed( $homeUrl ); } // Post comment feeds. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->postComments && is_comment_feed() && is_singular() ) { $this->redirectRssFeed( $homeUrl ); } // Attachment feeds. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->attachments && 'feed' === $rssFeed && get_query_var( 'attachment', false ) ) { $this->redirectRssFeed( $homeUrl ); } // Author feeds. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->authors && is_author() ) { $this->redirectRssFeed( get_author_posts_url( (int) get_query_var( 'author' ) ) ); } // Search results feed. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->search && is_search() ) { $this->redirectRssFeed( esc_url( trailingslashit( $homeUrl ) . '?s=' . get_search_query() ) ); } // All post types. $archives = aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->archives->included; $postType = $this->getTheQueriedPostType(); if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->archives->all && ! in_array( $postType, $archives, true ) && is_post_type_archive() ) { $this->redirectRssFeed( get_post_type_archive_link( $postType ) ); } // All taxonomies. $taxonomies = aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->taxonomies->included; $term = get_queried_object(); if ( is_a( $term, 'WP_Term' ) && ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->taxonomies->all && ! in_array( $term->taxonomy, $taxonomies, true ) && ( is_category() || is_tag() || is_tax() ) ) { $termUrl = get_term_link( $term, $term->taxonomy ); if ( is_wp_error( $termUrl ) ) { $termUrl = $homeUrl; } $this->redirectRssFeed( $termUrl ); } if ( ! isset( $_SERVER['REQUEST_URI'] ) ) { return; } // Paginated feed pages. This one is last since we are using a regular expression to validate. if ( ! aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->paginated && preg_match( '/(\d+\/|(?<=\/)page\/\d+\/)$/', sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ) { $this->redirectRssFeed( $homeUrl ); } } /** * Get the currently queried post type. * * @since 4.2.1 * * @return string The queried post type. */ private function getTheQueriedPostType() { $postType = get_query_var( 'post_type' ); if ( is_array( $postType ) ) { $postType = reset( $postType ); } return $postType; } /** * Redirect the feed to the appropriate URL. * * @since 4.2.1 * * @return void */ private function redirectRssFeed( $url ) { if ( empty( $url ) ) { return; } // Set or remove headers. header_remove( 'Content-Type' ); header_remove( 'Last-Modified' ); header_remove( 'Expires' ); $cache = 'public, max-age=604800, s-maxage=604800, stale-while-revalidate=120, stale-if-error=14400'; if ( is_user_logged_in() ) { $cache = 'private, max-age=0'; } header( 'Cache-Control: ' . $cache, true ); wp_safe_redirect( $url, 301, AIOSEO_PLUGIN_SHORT_NAME ); } /** * Rewrite the RSS feed links. * * @since 4.2.1 * * @param array $args The arguments to filter. * @return void */ public function rssFeedLinks( $args ) { $defaults = [ // Translators: Separator between blog name and feed type in feed links. 'separator' => _x( '-', 'feed link', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Post title. 'singletitle' => __( '%1$s %2$s %3$s Comments Feed', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Category name. 'cattitle' => __( '%1$s %2$s %3$s Category Feed', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Tag name. 'tagtitle' => __( '%1$s %2$s %3$s Tag Feed', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Term name, 4: Taxonomy singular name. 'taxtitle' => __( '%1$s %2$s %3$s %4$s Feed', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Author name. 'authortitle' => __( '%1$s %2$s Posts by %3$s Feed', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Search query. 'searchtitle' => __( '%1$s %2$s Search Results for “%3$s” Feed', 'all-in-one-seo-pack' ), // Translators: 1 - Blog name, 2 - Separator (raquo), 3 - Post type name. 'posttypetitle' => __( '%1$s %2$s %3$s Feed', 'all-in-one-seo-pack' ), ]; $args = wp_parse_args( $args, $defaults ); $attributes = [ 'title' => null, 'href' => null ]; if ( aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->postComments && is_singular() ) { $attributes = $this->getPostCommentsAttributes( $args ); } $archives = aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->archives->included; $postType = $this->getTheQueriedPostType(); if ( ( aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->archives->all || in_array( $postType, $archives, true ) ) && is_post_type_archive() ) { $attributes = $this->getPostTypeArchivesAttributes( $args ); } // All taxonomies. $taxonomies = aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->taxonomies->included; $term = get_queried_object(); if ( $term && isset( $term->taxonomy ) && ( aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->taxonomies->all || in_array( $term->taxonomy, $taxonomies, true ) ) && ( is_category() || is_tag() || is_tax() ) ) { $attributes = $this->getTaxonomiesAttributes( $args, $term ); } if ( aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->authors && is_author() ) { $attributes = $this->getAuthorAttributes( $args ); } if ( aioseo()->options->searchAppearance->advanced->crawlCleanup->feeds->search && is_search() ) { $attributes = $this->getSearchAttributes( $args ); } if ( ! empty( $attributes['title'] ) && ! empty( $attributes['href'] ) ) { echo '<link rel="alternate" type="application/rss+xml" title="' . esc_attr( $attributes['title'] ) . '" href="' . esc_url( $attributes['href'] ) . '" />' . "\n"; } } /** * Retrieve the attributes for post comments feed. * * @since 4.2.1 * * @param array $args An array of arguments. * @return array An array of attributes. */ private function getPostCommentsAttributes( $args ) { $id = 0; $post = get_post( $id ); $title = null; $href = null; if ( comments_open() || pings_open() || 0 < $post->comment_count ) { $title = sprintf( $args['singletitle'], get_bloginfo( 'name' ), $args['separator'], the_title_attribute( [ 'echo' => false ] ) ); $href = get_post_comments_feed_link( $post->ID ); } return [ 'title' => $title, 'href' => $href ]; } /** * Retrieve the attributes for post type archives feed. * * @since 4.2.1 * * @param array $args An array of arguments. * @return array An array of attributes. */ private function getPostTypeArchivesAttributes( $args ) { $postTypeObject = get_post_type_object( $this->getQueriedPostType() ); $title = sprintf( $args['posttypetitle'], get_bloginfo( 'name' ), $args['separator'], $postTypeObject->labels->name ); $href = get_post_type_archive_feed_link( $postTypeObject->name ); return [ 'title' => $title, 'href' => $href ]; } /** * Retrieve the attributes for taxonomies feed. * * @since 4.2.1 * * @param array $args An array of arguments. * @param \WP_Term $term The term. * @return array An array of attributes. */ private function getTaxonomiesAttributes( $args, $term ) { $title = null; $href = null; if ( is_category() ) { $title = sprintf( $args['cattitle'], get_bloginfo( 'name' ), $args['separator'], $term->name ); $href = get_category_feed_link( $term->term_id ); } if ( is_tag() ) { $title = sprintf( $args['tagtitle'], get_bloginfo( 'name' ), $args['separator'], $term->name ); $href = get_tag_feed_link( $term->term_id ); } if ( is_tax() ) { $tax = get_taxonomy( $term->taxonomy ); $title = sprintf( $args['taxtitle'], get_bloginfo( 'name' ), $args['separator'], $term->name, $tax->labels->singular_name ); $href = get_term_feed_link( $term->term_id, $term->taxonomy ); } return [ 'title' => $title, 'href' => $href ]; } /** * Retrieve the attributes for the author feed. * * @since 4.2.1 * * @param array $args An array of arguments. * @return array An array of attributes. */ private function getAuthorAttributes( $args ) { $authorId = (int) get_query_var( 'author' ); $title = sprintf( $args['authortitle'], get_bloginfo( 'name' ), $args['separator'], get_the_author_meta( 'display_name', $authorId ) ); $href = get_author_feed_link( $authorId ); return [ 'title' => $title, 'href' => $href ]; } /** * Retrieve the attributes for the search feed. * * @since 4.2.1 * * @param array $args An array of arguments. * @return array An array of attributes. */ private function getSearchAttributes( $args ) { $title = sprintf( $args['searchtitle'], get_bloginfo( 'name' ), $args['separator'], get_search_query( false ) ); $href = get_search_feed_link(); return [ 'title' => $title, 'href' => $href ]; } /** * Get the currently queried post type. * * @since 4.2.1 * * @return string The currently queried post type. */ private function getQueriedPostType() { $postType = get_query_var( 'post_type' ); if ( is_array( $postType ) ) { $postType = reset( $postType ); } return $postType; } }
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