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<?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName use Automattic\Jetpack\Assets; use Automattic\Jetpack\Stats\Tracking_Pixel as Stats_Tracking_Pixel; use Automattic\Jetpack\Sync\Functions; /** * Manages compatibility with the amp-wp plugin * * @see https://github.com/Automattic/amp-wp / class Jetpack_AMP_Support { /* * Apply custom AMP changes on the front-end. / public static function init() { // Add Stats tracking pixel on Jetpack sites when the Stats module is active. if ( Jetpack::is_module_active( 'stats' ) && ! ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ) { add_action( 'amp_post_template_footer', array( 'Jetpack_AMP_Support', 'add_stats_pixel' ) ); } // Sharing. add_filter( 'jetpack_sharing_display_markup', array( 'Jetpack_AMP_Support', 'render_sharing_html' ), 10, 2 ); add_filter( 'sharing_enqueue_scripts', array( 'Jetpack_AMP_Support', 'amp_disable_sharedaddy_css' ) ); add_action( 'wp_enqueue_scripts', array( 'Jetpack_AMP_Support', 'amp_enqueue_sharing_css' ) ); // Sharing for Reader mode. if ( function_exists( 'jetpack_social_menu_include_svg_icons' ) ) { add_action( 'amp_post_template_footer', 'jetpack_social_menu_include_svg_icons' ); } add_action( 'amp_post_template_css', array( 'Jetpack_AMP_Support', 'amp_reader_sharing_css' ), 10, 0 ); // enforce freedom mode for videopress. add_filter( 'videopress_shortcode_options', array( 'Jetpack_AMP_Support', 'videopress_enable_freedom_mode' ) ); // include Jetpack og tags when rendering native AMP head. add_action( 'amp_post_template_head', array( 'Jetpack_AMP_Support', 'amp_post_jetpack_og_tags' ) ); // Post rendering changes for legacy AMP. add_action( 'pre_amp_render_post', array( 'Jetpack_AMP_Support', 'amp_disable_the_content_filters' ) ); // Disable Comment Likes. add_filter( 'jetpack_comment_likes_enabled', array( 'Jetpack_AMP_Support', 'comment_likes_enabled' ) ); // Transitional mode AMP should not have comment likes. add_filter( 'the_content', array( 'Jetpack_AMP_Support', 'disable_comment_likes_before_the_content' ) ); // Add post template metadata for legacy AMP. add_filter( 'amp_post_template_metadata', array( 'Jetpack_AMP_Support', 'amp_post_template_metadata' ), 10, 2 ); // Filter photon image args for AMP Stories. add_filter( 'jetpack_photon_post_image_args', array( 'Jetpack_AMP_Support', 'filter_photon_post_image_args_for_stories' ), 10, 2 ); // Sync the amp-options. add_filter( 'jetpack_options_whitelist', array( 'Jetpack_AMP_Support', 'filter_jetpack_options_safelist' ) ); } /* * Disable the Comment Likes feature on AMP views. * * @param bool $enabled Should comment likes be enabled. / public static function comment_likes_enabled( $enabled ) { return $enabled && ! self::is_amp_request(); } /* * Apply custom AMP changes in wp-admin. / public static function admin_init() { // disable Likes metabox for post editor if AMP canonical disabled. add_filter( 'post_flair_disable', array( 'Jetpack_AMP_Support', 'is_amp_canonical' ), 99 ); } /* * Is the page in AMP 'canonical mode'. * Used when themes register support for AMP with `add_theme_support( 'amp' )`. * * @return bool is_amp_canonical / public static function is_amp_canonical() { return function_exists( 'amp_is_canonical' ) && amp_is_canonical(); } /* * Is AMP available for this request * This returns false for admin, CLI requests etc. * * @return bool is_amp_available / public static function is_amp_available() { return ( function_exists( 'amp_is_available' ) && amp_is_available() ); } /* * Does the page return AMP content. * * @return bool $is_amp_request Are we on am AMP view. / public static function is_amp_request() { $is_amp_request = ( function_exists( 'is_amp_endpoint' ) && is_amp_endpoint() ); /* * Returns true if the current request should return valid AMP content. * * @since 6.2.0 * * @param boolean $is_amp_request Is this request supposed to return valid AMP content? / return apply_filters( 'jetpack_is_amp_request', $is_amp_request ); } /* * Determines whether the legacy AMP post templates are being used. * * @since 10.6.0 * * @return bool / public static function is_amp_legacy() { return ( function_exists( 'amp_is_legacy' ) && amp_is_legacy() ); } /* * Remove content filters added by Jetpack. / public static function amp_disable_the_content_filters() { if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { add_filter( 'protected_embeds_use_form_post', '__return_false' ); remove_filter( 'the_title', 'widont' ); } remove_filter( 'pre_kses', array( 'Filter_Embedded_HTML_Objects', 'filter' ), 11 ); remove_filter( 'pre_kses', array( 'Filter_Embedded_HTML_Objects', 'maybe_create_links' ), 100 ); } /* * Do not add comment likes on AMP requests. * * @param string $content Post content. / public static function disable_comment_likes_before_the_content( $content ) { if ( self::is_amp_request() ) { remove_filter( 'comment_text', 'comment_like_button', 12, 2 ); } return $content; } /* * Add Jetpack stats pixel. * * @since 6.2.1 / public static function add_stats_pixel() { if ( ! has_action( 'wp_footer', array( Stats_Tracking_Pixel::class, 'add_amp_pixel' ) ) ) { return; } $stats_data = Stats_Tracking_Pixel::build_view_data(); Stats_Tracking_Pixel::render_amp_footer( $stats_data ); } /* * Add publisher and image metadata to legacy AMP post. * * @since 6.2.0 * * @param array $metadata Metadata array. * @param WP_Post $post Post. * @return array Modified metadata array. / public static function amp_post_template_metadata( $metadata, $post ) { if ( isset( $metadata['publisher'] ) && ! isset( $metadata['publisher']['logo'] ) ) { $metadata = self::add_site_icon_to_metadata( $metadata ); } if ( ! isset( $metadata['image'] ) && ! empty( $post ) ) { $metadata = self::add_image_to_metadata( $metadata, $post ); } return $metadata; } /* * Add blavatar to legacy AMP post metadata. * * @since 6.2.0 * * @param array $metadata Metadata. * * @return array Metadata. / private static function add_site_icon_to_metadata( $metadata ) { $size = 60; $site_icon_url = class_exists( 'Automattic\\Jetpack\\Sync\\Functions' ) ? Functions::site_icon_url( $size ) : ''; if ( function_exists( 'blavatar_domain' ) ) { $metadata['publisher']['logo'] = array( '@type' => 'ImageObject', 'url' => blavatar_url( blavatar_domain( site_url() ), 'img', $size, self::staticize_subdomain( 'https://wordpress.com/i/favicons/apple-touch-icon-60x60.png' ) ), 'width' => $size, 'height' => $size, ); } elseif ( $site_icon_url ) { $metadata['publisher']['logo'] = array( '@type' => 'ImageObject', 'url' => $site_icon_url, 'width' => $size, 'height' => $size, ); } return $metadata; } /* * Add image to legacy AMP post metadata. * * @since 6.2.0 * * @param array $metadata Metadata. * @param WP_Post $post Post. * @return array Metadata. / private static function add_image_to_metadata( $metadata, $post ) { $image = Jetpack_PostImages::get_image( $post->ID, array( 'fallback_to_avatars' => true, 'avatar_size' => 200, // AMP already attempts these. 'from_thumbnail' => false, 'from_attachment' => false, ) ); if ( empty( $image ) ) { return self::add_fallback_image_to_metadata( $metadata ); } if ( ! isset( $image['src_width'] ) ) { $dimensions = self::extract_image_dimensions_from_getimagesize( array( $image['src'] => false, ) ); if ( false !== $dimensions[ $image['src'] ] ) { $image['src_width'] = $dimensions['width']; $image['src_height'] = $dimensions['height']; } } $metadata['image'] = array( '@type' => 'ImageObject', 'url' => $image['src'], ); if ( isset( $image['src_width'] ) ) { $metadata['image']['width'] = $image['src_width']; } if ( isset( $image['src_width'] ) ) { $metadata['image']['height'] = $image['src_height']; } return $metadata; } /* * Add fallback image to legacy AMP post metadata. * * @since 6.2.0 * * @param array $metadata Metadata. * @return array Metadata. / private static function add_fallback_image_to_metadata( $metadata ) { /* This filter is documented in functions.opengraph.php / $default_image = apply_filters( 'jetpack_open_graph_image_default', 'https://wordpress.com/i/blank.jpg' ); $metadata['image'] = array( '@type' => 'ImageObject', 'url' => self::staticize_subdomain( $default_image ), 'width' => 200, 'height' => 200, ); return $metadata; } /* * Return static WordPress.com domain to use to load resources from WordPress.com. * * @param string $domain Asset URL. / private static function staticize_subdomain( $domain ) { // deal with WPCOM vs Jetpack. if ( function_exists( 'staticize_subdomain' ) ) { return staticize_subdomain( $domain ); } else { return Assets::staticize_subdomain( $domain ); } } /* * Extract image dimensions via wpcom/imagesize, only on WPCOM * * @since 6.2.0 * * @param array $dimensions Dimensions. * @return array Dimensions. / private static function extract_image_dimensions_from_getimagesize( $dimensions ) { if ( ! ( defined( 'IS_WPCOM' ) && IS_WPCOM && function_exists( 'require_lib' ) ) ) { return $dimensions; } require_lib( 'wpcom/imagesize' ); foreach ( $dimensions as $url => $value ) { if ( is_array( $value ) ) { continue; } $result = wpcom_getimagesize( $url ); if ( is_array( $result ) ) { $dimensions[ $url ] = array( 'width' => $result[0], 'height' => $result[1], ); } } return $dimensions; } /* * Display Open Graph Meta tags in AMP views. / public static function amp_post_jetpack_og_tags() { if ( ! ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ) { Jetpack::init()->check_open_graph(); } if ( function_exists( 'jetpack_og_tags' ) ) { jetpack_og_tags(); } } /* * Force Freedom mode in VideoPress. * * @param array $options Array of VideoPress shortcode options. / public static function videopress_enable_freedom_mode( $options ) { if ( self::is_amp_request() ) { $options['freedom'] = true; } return $options; } /* * Display custom markup for the sharing buttons when in an AMP view. * * @param string $markup Content markup of the Jetpack sharing links. * @param array $sharing_enabled Array of Sharing Services currently enabled. / public static function render_sharing_html( $markup, $sharing_enabled ) { global $post; if ( empty( $post ) ) { return ''; } if ( ! self::is_amp_request() ) { return $markup; } remove_action( 'wp_footer', 'sharing_add_footer' ); if ( empty( $sharing_enabled ) ) { return $markup; } $sharing_links = array(); foreach ( $sharing_enabled['visible'] as $service ) { $sharing_link = $service->get_amp_display( $post ); if ( ! empty( $sharing_link ) ) { $sharing_links[] = $sharing_link; } } // Replace the existing unordered list with AMP sharing buttons. $markup = preg_replace( '#<ul>(.+)</ul>#', implode( '', $sharing_links ), $markup ); // Remove any lingering share-end list items. $markup = str_replace( '<li class="share-end"></li>', '', $markup ); return $markup; } /* * Tells Jetpack not to enqueue CSS for share buttons. * * @param bool $enqueue Whether or not to enqueue. * @return bool Whether or not to enqueue. / public static function amp_disable_sharedaddy_css( $enqueue ) { if ( self::is_amp_request() ) { $enqueue = false; } return $enqueue; } /* * Enqueues the AMP specific sharing styles for the sharing icons. / public static function amp_enqueue_sharing_css() { if ( Jetpack::is_module_active( 'sharedaddy' ) && self::is_amp_request() && ! self::is_amp_legacy() ) { wp_enqueue_style( 'sharedaddy-amp', plugin_dir_url( __DIR__ ) . 'modules/sharedaddy/amp-sharing.css', array( 'social-logos' ), JETPACK__VERSION ); } } /* * For the AMP Reader mode template, include styles that we need. / public static function amp_reader_sharing_css() { // If sharing is not enabled, we should not proceed to render the CSS. if ( ! defined( 'JETPACK_SOCIAL_LOGOS_DIR' ) \|\| ! defined( 'JETPACK_SOCIAL_LOGOS_URL' ) \|\| ! defined( 'WP_SHARING_PLUGIN_DIR' ) ) { return; } / * We'll need to output the full contents of the 2 files * in the head on AMP views. We can't rely on regular enqueues here. * @todo As of AMP plugin v1.5, you can actually rely on regular enqueues thanks to https://github.com/ampproject/amp-wp/pull/4299. Once WPCOM upgrades AMP, then this method can be eliminated. * * phpcs:disable WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents * phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped / $css = file_get_contents( JETPACK_SOCIAL_LOGOS_DIR . 'social-logos.css' ); $css = preg_replace( '#(?<=url\(")(?=social-logos\.)#', JETPACK_SOCIAL_LOGOS_URL, $css ); // Make sure font files get their absolute paths. echo $css; echo file_get_contents( WP_SHARING_PLUGIN_DIR . 'amp-sharing.css' ); / * phpcs:enable WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents * phpcs:enable WordPress.Security.EscapeOutput.OutputNotEscaped / } /* * Ensure proper Photon image dimensions for AMP Stories. * * @param array $args Array of Photon Arguments. * @param array $details { * Array of image details. * * @type string $tag Image tag (Image HTML output). * @type string $src Image URL. * @type string $src_orig Original Image URL. * @type int\|false $width Image width. * @type int\|false $height Image height. * @type int\|false $width_orig Original image width before constrained by content_width. * @type int\|false $height_orig Original Image height before constrained by content_width. * @type string $transform_orig Original transform before constrained by content_width. * } * @return array Args. / public static function filter_photon_post_image_args_for_stories( $args, $details ) { if ( ! is_singular( 'amp_story' ) ) { return $args; } // Percentage-based dimensions are not allowed in AMP, so this shouldn't happen, but short-circuit just in case. if ( str_contains( $details['width_orig'], '%' ) \|\| str_contains( $details['height_orig'], '%' ) ) { return $args; } $max_height = 1280; // See image size with the slug \AMP_Story_Post_Type::MAX_IMAGE_SIZE_SLUG. $transform = $details['transform_orig']; $width = $details['width_orig']; $height = $details['height_orig']; // If height is available, constrain to $max_height. if ( false !== $height ) { if ( $height > $max_height && false !== $height ) { $width = ( $max_height $width ) / $height; $height = $max_height; } elseif ( $height > $max_height ) { $height = $max_height; } } /* * Set a height if none is found. * If height is set in this manner and height is available, use `fit` instead of `resize` to prevent skewing. / if ( false === $height ) { $height = $max_height; if ( false !== $width ) { $transform = 'fit'; } } // Build array of Photon args and expose to filter before passing to Photon URL function. $args = array(); if ( false !== $width && false !== $height ) { $args[ $transform ] = $width . ',' . $height; } elseif ( false !== $width ) { $args['w'] = $width; } elseif ( false !== $height ) { $args['h'] = $height; } return $args; } /* * Adds amp-options to the list of options to sync, if AMP is available * * @param array $options_safelist Safelist of options to sync. * * @return array Updated options safelist */ public static function filter_jetpack_options_safelist( $options_safelist ) { if ( function_exists( 'is_amp_endpoint' ) ) { $options_safelist[] = 'amp-options'; } return $options_safelist; } }

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