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<?php // phpcs:ignore WordPress.Files.FileName.NotHyphenatedLowercase /** * Open Graph Tags * * Add Open Graph tags so that Facebook (and any other service that supports them) * can crawl the site better and we provide a better sharing experience. * * @link https://ogp.me/ * @link https://developers.facebook.com/docs/opengraph/ * * @package automattic/jetpack / use Automattic\Jetpack\Status\Host; add_action( 'wp_head', 'jetpack_og_tags' ); add_action( 'web_stories_story_head', 'jetpack_og_tags' ); // Add a Fediverse Open Graph Tag when an author has connected their Mastodon account. add_filter( 'jetpack_open_graph_tags', 'jetpack_add_fediverse_creator_open_graph_tag', 10, 1 ); add_filter( 'jetpack_open_graph_output', 'jetpack_filter_fediverse_cards_output', 10, 1 ); /* * Outputs Open Graph tags generated by Jetpack. / function jetpack_og_tags() { global $post; $data = $post; // so that we don't accidentally explode the global. $is_amp_response = ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ); // Disable the widont filter on WP.com to avoid stray &nbsps. $disable_widont = remove_filter( 'the_title', 'widont' ); $og_output = "\n"; if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head. $og_output .= "<!-- Jetpack Open Graph Tags -->\n"; } $tags = array(); /* * Filter the minimum width of the images used in Jetpack Open Graph Meta Tags. * * @module sharedaddy, publicize * * @since 2.0.0 * * @param int 200 Minimum image width used in Jetpack Open Graph Meta Tags. / $image_width = absint( apply_filters( 'jetpack_open_graph_image_width', 200 ) ); /* * Filter the minimum height of the images used in Jetpack Open Graph Meta Tags. * * @module sharedaddy, publicize * * @since 2.0.0 * * @param int 200 Minimum image height used in Jetpack Open Graph Meta Tags. / $image_height = absint( apply_filters( 'jetpack_open_graph_image_height', 200 ) ); $description_length = 197; if ( is_home() \|\| is_front_page() ) { $site_type = Jetpack_Options::get_option_and_ensure_autoload( 'open_graph_protocol_site_type', '' ); $tags['og:type'] = ! empty( $site_type ) ? $site_type : 'website'; $tags['og:title'] = get_bloginfo( 'name' ); $tags['og:description'] = get_bloginfo( 'description' ); $front_page_id = get_option( 'page_for_posts' ); if ( 'page' === get_option( 'show_on_front' ) && $front_page_id && is_home() ) { $tags['og:url'] = get_permalink( $front_page_id ); } else { $tags['og:url'] = home_url( '/' ); } // Associate a blog's root path with one or more Facebook accounts. $facebook_admins = Jetpack_Options::get_option_and_ensure_autoload( 'facebook_admins', array() ); if ( ! empty( $facebook_admins ) ) { $tags['fb:admins'] = $facebook_admins; } } elseif ( is_author() ) { $tags['og:type'] = 'profile'; $author = get_queried_object(); if ( is_a( $author, 'WP_User' ) ) { $tags['og:title'] = $author->display_name; if ( ! empty( $author->user_url ) ) { $tags['og:url'] = $author->user_url; } else { $tags['og:url'] = get_author_posts_url( $author->ID ); } $tags['og:description'] = $author->description; $tags['profile:first_name'] = get_the_author_meta( 'first_name', $author->ID ); $tags['profile:last_name'] = get_the_author_meta( 'last_name', $author->ID ); } } elseif ( is_archive() ) { $tags['og:type'] = 'website'; $tags['og:title'] = wp_get_document_title(); $archive = get_queried_object(); if ( ! empty( $archive ) ) { if ( is_category() \|\| is_tag() \|\| is_tax() ) { $tags['og:url'] = get_term_link( $archive->term_id, $archive->taxonomy ); $tags['og:description'] = $archive->description; } elseif ( is_post_type_archive() ) { $tags['og:url'] = get_post_type_archive_link( $archive->name ); $tags['og:description'] = $archive->description; } } } elseif ( is_singular() && is_a( $data, 'WP_Post' ) ) { $tags['og:type'] = 'article'; if ( empty( $data->post_title ) ) { $tags['og:title'] = ' '; } else { /* This filter is documented in core/src/wp-includes/post-template.php / $tags['og:title'] = wp_kses( apply_filters( 'the_title', $data->post_title, $data->ID ), array() ); } $tags['og:url'] = get_permalink( $data->ID ); if ( ! post_password_required() ) { / * If the post author set an excerpt, use that. * Otherwise, pick the post content that comes before the More tag if there is one. * Do not use the post content if it contains premium content. / if ( ! empty( $data->post_excerpt ) ) { $tags['og:description'] = jetpack_og_get_description( $data->post_excerpt ); } elseif ( ! has_block( 'premium-content/container', $data->post_content ) ) { $excerpt = explode( '<!--more-->', $data->post_content )[0]; $tags['og:description'] = jetpack_og_get_description( $excerpt ); } } $tags['article:published_time'] = gmdate( 'c', strtotime( $data->post_date_gmt ) ); $tags['article:modified_time'] = gmdate( 'c', strtotime( $data->post_modified_gmt ) ); if ( post_type_supports( get_post_type( $data ), 'author' ) && isset( $data->post_author ) ) { $publicize_facebook_user = get_post_meta( $data->ID, '_publicize_facebook_user', true ); if ( ! empty( $publicize_facebook_user ) ) { $tags['article:author'] = esc_url( $publicize_facebook_user ); } } } elseif ( is_search() ) { if ( '' !== get_query_var( 's', '' ) ) { $tags['og:title'] = wp_get_document_title(); } } /* * Allow plugins to inject additional template-specific Open Graph tags. * * @module sharedaddy, publicize * * @since 3.0.0 * * @param array $tags Array of Open Graph Meta tags. * @param array $args Array of image size parameters. / $tags = apply_filters( 'jetpack_open_graph_base_tags', $tags, compact( 'image_width', 'image_height' ) ); // Re-enable widont if we had disabled it. if ( $disable_widont ) { add_filter( 'the_title', 'widont' ); } /* * Do not return any Open Graph Meta tags if we don't have any info about a post. * * @module sharedaddy, publicize * * @since 3.0.0 * * @param bool true Do not return any Open Graph Meta tags if we don't have any info about a post. / if ( empty( $tags ) && apply_filters( 'jetpack_open_graph_return_if_empty', true ) ) { return; } $tags['og:site_name'] = get_bloginfo( 'name' ); // Get image info and build tags. if ( ! post_password_required() ) { $image_info = jetpack_og_get_image( $image_width, $image_height ); $tags['og:image'] = $image_info['src']; if ( ! empty( $image_info['width'] ) ) { $tags['og:image:width'] = (int) $image_info['width']; } if ( ! empty( $image_info['height'] ) ) { $tags['og:image:height'] = (int) $image_info['height']; } // If we have an image, add the alt text even if it's empty. if ( ! empty( $image_info['src'] ) && isset( $image_info['alt_text'] ) ) { $tags['og:image:alt'] = esc_attr( $image_info['alt_text'] ); } } // Facebook whines if you give it an empty title. if ( empty( $tags['og:title'] ) ) { $tags['og:title'] = __( '(no title)', 'jetpack' ); } // Shorten the description if it's too long. if ( isset( $tags['og:description'] ) ) { $tags['og:description'] = strlen( $tags['og:description'] ) > $description_length ? mb_substr( $tags['og:description'], 0, $description_length ) . '…' : $tags['og:description']; } // Try to add OG locale tag if the WP->FB data mapping exists. if ( defined( 'JETPACK__GLOTPRESS_LOCALES_PATH' ) && file_exists( JETPACK__GLOTPRESS_LOCALES_PATH ) ) { require_once JETPACK__GLOTPRESS_LOCALES_PATH; $_locale = get_locale(); // We have to account for w.org vs WP.com locale divergence. if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { $gp_locale = GP_Locales::by_field( 'slug', $_locale ); } else { $gp_locale = GP_Locales::by_field( 'wp_locale', $_locale ); } } if ( isset( $gp_locale->facebook_locale ) && ! empty( $gp_locale->facebook_locale ) ) { $tags['og:locale'] = $gp_locale->facebook_locale; } /* * Allow the addition of additional Open Graph Meta tags, or modify the existing tags. * * @module sharedaddy, publicize * * @since 2.0.0 * * @param array $tags Array of Open Graph Meta tags. * @param array $args Array of image size parameters. / $tags = apply_filters( 'jetpack_open_graph_tags', $tags, compact( 'image_width', 'image_height' ) ); // secure_urls need to go right after each og:image to work properly so we will abstract them here. $tags['og:image:secure_url'] = ( empty( $tags['og:image:secure_url'] ) ) ? '' : $tags['og:image:secure_url']; $secure = $tags['og:image:secure_url']; unset( $tags['og:image:secure_url'] ); $secure_image_num = 0; $allowed_empty_tags = array( 'og:image:alt', ); foreach ( (array) $tags as $tag_property => $tag_content ) { // to accommodate multiple images. $tag_content = (array) $tag_content; $tag_content = array_unique( $tag_content ); foreach ( $tag_content as $tag_content_single ) { if ( empty( $tag_content_single ) && ! in_array( $tag_property, $allowed_empty_tags, true ) ) { continue; // Only allow certain empty tags. } switch ( $tag_property ) { case 'og:url': case 'og:image': case 'og:image:url': case 'og:image:secure_url': case 'og:audio': case 'og:audio:url': case 'og:audio:secure_url': case 'og:video': case 'og:video:url': case 'og:video:secure_url': $og_tag = sprintf( '<meta property="%s" content="%s" />', esc_attr( $tag_property ), esc_url( $tag_content_single ) ); break; default: $og_tag = sprintf( '<meta property="%s" content="%s" />', esc_attr( $tag_property ), esc_attr( $tag_content_single ) ); } /* * Filter the HTML Output of each Open Graph Meta tag. * * @module sharedaddy, publicize * * @since 2.0.0 * * @param string $og_tag HTML HTML Output of each Open Graph Meta tag. / $og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag ); $og_output .= "\n"; if ( 'og:image' === $tag_property ) { if ( is_array( $secure ) && ! empty( $secure[ $secure_image_num ] ) ) { $og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure[ $secure_image_num ] ) ); /* This filter is documented in functions.opengraph.php / $og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag ); $og_output .= "\n"; } elseif ( ! is_array( $secure ) && ! empty( $secure ) ) { $og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure ) ); /* This filter is documented in functions.opengraph.php / $og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag ); $og_output .= "\n"; } ++$secure_image_num; } } } if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head. $og_output .= "\n<!-- End Jetpack Open Graph Tags -->"; } $og_output .= "\n"; // This is trusted output or added by a filter. echo $og_output; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped } /* * Returns an image used in social shares. * * @since 2.0.0 * * @param int $width Minimum width for the image. Default is 200 based on Facebook's requirement. * @param int $height Minimum height for the image. Default is 200 based on Facebook's requirement. * @param null $deprecated Deprecated. * * @return array The source ('src'), 'width', and 'height' of the image. / function jetpack_og_get_image( $width = 200, $height = 200, $deprecated = null ) { if ( ! empty( $deprecated ) ) { _deprecated_argument( __FUNCTION__, 'jetpack-6.6.0' ); } $image = array(); if ( is_singular() && ! is_home() ) { // Grab obvious image if post is an attachment page for an image. if ( is_attachment( get_the_ID() ) && str_starts_with( get_post_mime_type(), 'image' ) ) { $image['src'] = wp_get_attachment_url( get_the_ID() ); $image['alt_text'] = Jetpack_PostImages::get_alt_text( get_the_ID() ); } // Attempt to find something good for this post using our generalized PostImages code. if ( empty( $image ) && class_exists( 'Jetpack_PostImages' ) ) { $post_image = Jetpack_PostImages::get_image( get_the_ID(), array( 'width' => $width, 'height' => $height, ) ); if ( ! empty( $post_image ) && is_array( $post_image ) ) { $image['src'] = $post_image['src']; if ( isset( $post_image['src_width'] ) && isset( $post_image['src_height'] ) ) { $image['width'] = $post_image['src_width']; $image['height'] = $post_image['src_height']; } if ( ! empty( $post_image['alt_text'] ) ) { $image['alt_text'] = $post_image['alt_text']; } } } } elseif ( is_author() ) { $author = get_queried_object(); if ( is_a( $author, 'WP_User' ) ) { $image['src'] = get_avatar_url( $author->user_email, array( 'size' => $width, ) ); $image['alt_text'] = $author->display_name; } } // First fall back, blavatar. if ( empty( $image ) && function_exists( 'blavatar_domain' ) ) { $blavatar_domain = blavatar_domain( site_url() ); if ( blavatar_exists( $blavatar_domain ) ) { $image['src'] = blavatar_url( $blavatar_domain, 'img', $width, false, true ); $image['width'] = $width; $image['height'] = $height; } } // Second fall back, Site Logo. if ( empty( $image ) && ( function_exists( 'jetpack_has_site_logo' ) && jetpack_has_site_logo() ) ) { $image_id = jetpack_get_site_logo( 'id' ); $logo = wp_get_attachment_image_src( $image_id, 'full' ); if ( isset( $logo[0] ) && isset( $logo[1] ) && isset( $logo[2] ) && ( _jetpack_og_get_image_validate_size( $logo[1], $logo[2], $width, $height ) ) ) { $image['src'] = $logo[0]; $image['width'] = $logo[1]; $image['height'] = $logo[2]; $image['alt_text'] = Jetpack_PostImages::get_alt_text( $image_id ); } } // Third fall back, Core Site Icon, if valid in size. if ( empty( $image ) && has_site_icon() ) { $image_id = get_option( 'site_icon' ); $icon = wp_get_attachment_image_src( $image_id, 'full' ); if ( isset( $icon[0] ) && isset( $icon[1] ) && isset( $icon[2] ) && ( _jetpack_og_get_image_validate_size( $icon[1], $icon[2], $width, $height ) ) ) { $image['src'] = $icon[0]; $image['width'] = $icon[1]; $image['height'] = $icon[2]; $image['alt_text'] = Jetpack_PostImages::get_alt_text( $image_id ); } } // Final fall back, blank image. if ( empty( $image ) ) { /* * Filter the default Open Graph Image tag, used when no Image can be found in a post. * * @since 3.0.0 * * @param string $str Default Image URL. / $image['src'] = apply_filters( 'jetpack_open_graph_image_default', 'https://s0.wp.com/i/blank.jpg' ); } // If we didn't get an explicit alt tag from the image, set a default. if ( empty( $image['alt_text'] ) ) { /* * Filter the default Open Graph image alt text, used when the Open Graph image from the post does not have an alt text. * * @since 10.4 * * @param string $str Default Open Graph image alt text. / $image['alt_text'] = apply_filters( 'jetpack_open_graph_image_default_alt_text', '' ); } return $image; } /* * Validate the width and height against required width and height * * @param int $width Width of the image. * @param int $height Height of the image. * @param int $req_width Required width to pass validation. * @param int $req_height Required height to pass validation. * * @return bool - True if the image passed the required size validation / function _jetpack_og_get_image_validate_size( $width, $height, $req_width, $req_height ) { if ( ! $width \|\| ! $height ) { return false; } $valid_width = ( $width >= $req_width ); $valid_height = ( $height >= $req_height ); $is_image_acceptable = $valid_width && $valid_height; return $is_image_acceptable; } /* * Gets a gravatar URL of the specified size. * * @param string $email E-mail address to get gravatar for. * @param int $width Size of returned gravatar. * @return array\|bool\|mixed\|string / function jetpack_og_get_image_gravatar( $email, $width ) { return get_avatar_url( $email, array( 'size' => $width, ) ); } /* * Clean up text meant to be used as Description Open Graph tag. * * There should be: * - no links * - no shortcodes * - no html tags or their contents * - not too many words. * * @param string $description Text coming from WordPress (autogenerated or manually generated by author). * @param WP_Post\|null $data Information about our post. * * @return string $description Cleaned up description string. / function jetpack_og_get_description( $description = '', $data = null ) { // Remove tags such as <style or <script. $description = wp_strip_all_tags( $description ); / * Clean up any plain text entities left into formatted entities. * Intentionally not using a filter to prevent pollution. * @see https://github.com/Automattic/jetpack/pull/2899#issuecomment-151957382 / $description = wp_kses( trim( convert_chars( wptexturize( $description ) ) ), array() ); // Remove shortcodes. $description = strip_shortcodes( $description ); // Remove links. $description = preg_replace( '@https?://[\S]+@', '', $description ); / * Limit things to a small text blurb. * There isn't a hard limit set by Facebook, so let's rely on WP's own limit. * (55 words or the localized equivalent). * This limit can be customized with the wp_trim_words filter. / $description = wp_trim_words( $description ); // Let's set a default if we have no text by now. if ( empty( $description ) ) { /* * Filter the fallback `og:description` used when no excerpt information is provided. * * @module sharedaddy, publicize * * @since 3.9.0 * * @param string $var Fallback og:description. Default is translated `Visit the post for more'. * @param object $data Post object for the current post. / $description = apply_filters( 'jetpack_open_graph_fallback_description', __( 'Visit the post for more.', 'jetpack' ), $data ); } return $description; } /* * Display a Fediverse actor Open Graph tag when the post author has a Mastodon connection. * * @see https://blog.joinmastodon.org/2024/07/highlighting-journalism-on-mastodon/ * * @since 13.8 * * @param array $tags Current tags. * * @return array / function jetpack_add_fediverse_creator_open_graph_tag( $tags ) { / * Let's not do this on WordPress.com Simple for now, * because of its performance impact. * See p1723574138779019/1723572983.803009-slack-C01U2KGS2PQ / if ( ( new Host() )->is_wpcom_simple() ) { return $tags; } // Let's not add any tags when the ActivityPub plugin already adds its own. $is_activitypub_opengraph_integration_active = get_option( 'activitypub_use_opengraph' ); if ( $is_activitypub_opengraph_integration_active ) { return $tags; } // We pull the Mastodon connection data from Publicize. if ( ! function_exists( 'publicize_init' ) ) { return $tags; } $publicize = publicize_init(); global $post; if ( ! is_singular() \|\| ! $post instanceof WP_Post \|\| ! isset( $post->ID ) \|\| empty( $post->post_author ) ) { return $tags; } $post_mastodon_connections = array(); // Loop through active connections. foreach ( (array) $publicize->get_services( 'connected' ) as $service_name => $connections ) { if ( 'mastodon' !== $service_name ) { continue; } // services can have multiple connections. Store them all in our array. foreach ( $connections as $connection ) { $connection_id = $publicize->get_connection_id( $connection ); $connection_meta = $publicize->get_connection_meta( $connection ); $connection_data = $connection_meta['connection_data'] ?? array(); $mastodon_handle = $connection_meta['external_display'] ?? ''; $connection_user_id = $connection_data['user_id'] ?? 0; if ( empty( $mastodon_handle ) ) { continue; } // Did we skip this connection for this post? if ( get_post_meta( $post->ID, $publicize->POST_SKIP_PUBLICIZE . $connection_id, true ) ) { // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase continue; } $post_mastodon_connections[] = array( 'user_id' => (int) $connection_user_id, 'connection_id' => (int) $connection_id, 'handle' => $mastodon_handle, 'global' => 0 === (int) $connection_user_id, ); } } // If we have no Mastodon connections, skip. if ( empty( $post_mastodon_connections ) ) { return $tags; } / * Select a single Mastodon connection to use. * It should be either the first connection belonging to the post author, * or the first global connection. / foreach ( $post_mastodon_connections as $mastodon_connection ) { if ( (int) $post->post_author === $mastodon_connection['user_id'] ) { $tags['fediverse:creator'] = esc_attr( $mastodon_connection['handle'] ); break; } if ( $mastodon_connection['global'] ) { $tags['fediverse:creator'] = esc_attr( $mastodon_connection['handle'] ); break; } } return $tags; } /* * Update the markup for the Open Graph tag to match the expected output for Mastodon * (name instead of property). * * @since 13.8 * * @param string $og_tag A single OG tag. * * @return string Result of the OG tag. */ function jetpack_filter_fediverse_cards_output( $og_tag ) { return ( str_contains( $og_tag, 'fediverse:' ) ) ? preg_replace( '/property="([^"]+)"/', 'name="\1"', $og_tag ) : $og_tag; }

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