array( 'href' => array(), 'title' => array(), 'class' => array(), 'rel' => array(), ), 'br' => array(), 'p' => array( 'class' => array(), ), 'span' => array( 'class' => array(), ), 'div' => array( 'class' => array(), ), 'ul' => array(), 'ol' => array( 'reversed' => array(), 'start' => array(), ), 'li' => array( 'value' => array(), ), 'strong' => array( 'class' => array(), ), 'b' => array( 'class' => array(), ), 'i' => array( 'class' => array(), ), 'em' => array( 'class' => array(), ), 'blockquote' => array(), 'cite' => array(), 'code' => array( 'class' => array(), ), 'pre' => array( 'class' => array(), ), ); /** * Static function to Transform a WP_Post Object. * * This helps to chain the output of the Transformer. * * @param WP_Post $wp_post The WP_Post object * * @return void */ public static function transform( WP_Post $wp_post ) { return new static( $wp_post ); } /** * * * @param WP_Post $wp_post */ public function __construct( WP_Post $wp_post ) { $this->wp_post = $wp_post; } /** * Transforms the WP_Post object to an ActivityPub Object * * @see \Activitypub\Activity\Base_Object * * @return \Activitypub\Activity\Base_Object The ActivityPub Object */ public function to_object() { $wp_post = $this->wp_post; $object = new Base_Object(); $object->set_id( $this->get_id() ); $object->set_url( $this->get_url() ); $object->set_type( $this->get_object_type() ); $published = \strtotime( $wp_post->post_date_gmt ); $object->set_published( \gmdate( 'Y-m-d\TH:i:s\Z', $published ) ); $updated = \strtotime( $wp_post->post_modified_gmt ); if ( $updated > $published ) { $object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', $updated ) ); } $object->set_attributed_to( $this->get_attributed_to() ); $object->set_content( $this->get_content() ); $object->set_content_map( array( \strstr( \get_locale(), '_', true ) => $this->get_content(), ) ); $path = sprintf( 'users/%d/followers', intval( $wp_post->post_author ) ); $object->set_to( array( 'https://www.w3.org/ns/activitystreams#Public', get_rest_url_by_path( $path ), ) ); $object->set_cc( $this->get_cc() ); $object->set_attachment( $this->get_attachments() ); $object->set_tag( $this->get_tags() ); return $object; } /** * Returns the ID of the Post. * * @return string The Posts ID. */ public function get_id() { return $this->get_url(); } /** * Returns the URL of the Post. * * @return string The Posts URL. */ public function get_url() { $post = $this->wp_post; if ( 'trash' === get_post_status( $post ) ) { $permalink = \get_post_meta( $post->ID, 'activitypub_canonical_url', true ); } else { $permalink = \get_permalink( $post ); } return \esc_url( $permalink ); } /** * Returns the User-URL of the Author of the Post. * * If `single_user` mode is enabled, the URL of the Blog-User is returned. * * @return string The User-URL. */ protected function get_attributed_to() { if ( is_single_user() ) { $user = new Blog_User(); return $user->get_url(); } return Users::get_by_id( $this->wp_post->post_author )->get_url(); } /** * Returns the Image Attachments for this Post, parsed from blocks. * @param int $max_images The maximum number of images to return. * @param array $image_ids The image IDs to append new IDs to. * * @return array The image IDs. */ protected function get_block_image_ids( $max_images, $image_ids = [] ) { $blocks = \parse_blocks( $this->wp_post->post_content ); return self::get_image_ids_from_blocks( $blocks, $image_ids, $max_images ); } /** * Recursively get image IDs from blocks. * @param array $blocks The blocks to search for image IDs * @param array $image_ids The image IDs to append new IDs to * @param int $max_images The maximum number of images to return. * * @return array The image IDs. */ protected static function get_image_ids_from_blocks( $blocks, $image_ids, $max_images ) { foreach ( $blocks as $block ) { // recurse into inner blocks if ( ! empty( $block['innerBlocks'] ) ) { $image_ids = self::get_image_ids_from_blocks( $block['innerBlocks'], $image_ids, $max_images ); } switch ( $block['blockName'] ) { case 'core/image': case 'core/cover': if ( ! empty( $block['attrs']['id'] ) ) { $image_ids[] = $block['attrs']['id']; } break; case 'jetpack/slideshow': case 'jetpack/tiled-gallery': if ( ! empty( $block['attrs']['ids'] ) ) { $image_ids = array_merge( $image_ids, $block['attrs']['ids'] ); } break; case 'jetpack/image-compare': if ( ! empty( $block['attrs']['beforeImageId'] ) ) { $image_ids[] = $block['attrs']['beforeImageId']; } if ( ! empty( $block['attrs']['afterImageId'] ) ) { $image_ids[] = $block['attrs']['afterImageId']; } break; } // we could be at or over max, stop unneeded work if ( count( $image_ids ) >= $max_images ) { break; } } // still need to slice it because one gallery could knock us over the limit return \array_slice( $image_ids, 0, $max_images ); } /** * Generates all Image Attachments for a Post. * * @return array The Image Attachments. */ protected function get_attachments() { $max_images = intval( \apply_filters( 'activitypub_max_image_attachments', \get_option( 'activitypub_max_image_attachments', ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS ) ) ); $images = array(); // max images can't be negative or zero if ( $max_images <= 0 ) { return $images; } $id = $this->wp_post->ID; $image_ids = array(); // list post thumbnail first if this post has one if ( \function_exists( 'has_post_thumbnail' ) && \has_post_thumbnail( $id ) ) { $image_ids[] = \get_post_thumbnail_id( $id ); --$max_images; } if ( $max_images > 0 ) { // first try to get images that are actually in the post content if ( site_supports_blocks() && \has_blocks( $this->wp_post->post_content ) ) { $image_ids = $this->get_block_image_ids( $max_images, $image_ids ); } else { // fallback to images attached to the post $query = new \WP_Query( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID', 'posts_per_page' => $max_images, ) ); foreach ( $query->get_posts() as $attachment ) { if ( ! \in_array( $attachment->ID, $image_ids, true ) ) { $image_ids[] = $attachment->ID; } } } } $image_ids = \array_unique( $image_ids ); // get URLs for each image foreach ( $image_ids as $id ) { $image_size = 'full'; /** * Filter the image URL returned for each post. * * @param array|false $thumbnail The image URL, or false if no image is available. * @param int $id The attachment ID. * @param string $image_size The image size to retrieve. Set to 'full' by default. */ $thumbnail = apply_filters( 'activitypub_get_image', $this->get_image( $id, $image_size ), $id, $image_size ); if ( $thumbnail ) { $mimetype = \get_post_mime_type( $id ); $alt = \get_post_meta( $id, '_wp_attachment_image_alt', true ); $image = array( 'type' => 'Image', 'url' => $thumbnail[0], 'mediaType' => $mimetype, ); if ( $alt ) { $image['name'] = $alt; } $images[] = $image; } } return $images; } /** * Return details about an image attachment. * * @param int $id The attachment ID. * @param string $image_size The image size to retrieve. Set to 'full' by default. * * @return array|false Array of image data, or boolean false if no image is available. */ protected function get_image( $id, $image_size = 'full' ) { /** * Hook into the image retrieval process. Before image retrieval. * * @param int $id The attachment ID. * @param string $image_size The image size to retrieve. Set to 'full' by default. */ do_action( 'activitypub_get_image_pre', $id, $image_size ); $thumbnail = \wp_get_attachment_image_src( $id, $image_size ); /** * Hook into the image retrieval process. After image retrieval. * * @param int $id The attachment ID. * @param string $image_size The image size to retrieve. Set to 'full' by default. */ do_action( 'activitypub_get_image_post', $id, $image_size ); return $thumbnail; } /** * Returns the ActivityStreams 2.0 Object-Type for a Post based on the * settings and the Post-Type. * * @see https://www.w3.org/TR/activitystreams-vocabulary/#activity-types * * @return string The Object-Type. */ protected function get_object_type() { if ( 'wordpress-post-format' !== \get_option( 'activitypub_object_type', 'note' ) ) { return \ucfirst( \get_option( 'activitypub_object_type', 'note' ) ); } $post_type = \get_post_type( $this->wp_post ); switch ( $post_type ) { case 'post': $post_format = \get_post_format( $this->wp_post ); switch ( $post_format ) { case 'aside': case 'status': case 'quote': case 'note': $object_type = 'Note'; break; case 'gallery': case 'image': $object_type = 'Image'; break; case 'video': $object_type = 'Video'; break; case 'audio': $object_type = 'Audio'; break; default: $object_type = 'Article'; break; } break; case 'page': $object_type = 'Page'; break; case 'attachment': $mime_type = \get_post_mime_type(); $media_type = \preg_replace( '/(\/[a-zA-Z]+)/i', '', $mime_type ); switch ( $media_type ) { case 'audio': $object_type = 'Audio'; break; case 'video': $object_type = 'Video'; break; case 'image': $object_type = 'Image'; break; } break; default: $object_type = 'Article'; break; } return $object_type; } /** * Returns a list of Mentions, used in the Post. * * @see https://docs.joinmastodon.org/spec/activitypub/#Mention * * @return array The list of Mentions. */ protected function get_cc() { $cc = array(); $mentions = $this->get_mentions(); if ( $mentions ) { foreach ( $mentions as $url ) { $cc[] = $url; } } return $cc; } /** * Returns a list of Tags, used in the Post. * * This includes Hash-Tags and Mentions. * * @return array The list of Tags. */ protected function get_tags() { $tags = array(); $post_tags = \get_the_tags( $this->wp_post->ID ); if ( $post_tags ) { foreach ( $post_tags as $post_tag ) { $tag = array( 'type' => 'Hashtag', 'href' => \esc_url( \get_tag_link( $post_tag->term_id ) ), 'name' => esc_hashtag( $post_tag->name ), ); $tags[] = $tag; } } $mentions = $this->get_mentions(); if ( $mentions ) { foreach ( $mentions as $mention => $url ) { $tag = array( 'type' => 'Mention', 'href' => \esc_url( $url ), 'name' => \esc_html( $mention ), ); $tags[] = $tag; } } return $tags; } /** * Returns the content for the ActivityPub Item. * * The content will be generated based on the user settings. * * @return string The content. */ protected function get_content() { global $post; // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited $post = $this->wp_post; $content = $this->get_post_content_template(); // Fill in the shortcodes. setup_postdata( $post ); $content = do_shortcode( $content ); wp_reset_postdata(); $content = \wp_kses( $content, $this->allowed_tags ); $content = \wpautop( $content ); $content = \preg_replace( '/[\n\r\t]/', '', $content ); $content = \trim( $content ); $content = \apply_filters( 'activitypub_the_content', $content, $post ); $content = \html_entity_decode( $content, \ENT_QUOTES, 'UTF-8' ); return $content; } /** * Gets the template to use to generate the content of the activitypub item. * * @return string The Template. */ protected function get_post_content_template() { if ( 'excerpt' === \get_option( 'activitypub_post_content_type', 'content' ) ) { return "[ap_excerpt]\n\n[ap_permalink type=\"html\"]"; } if ( 'title' === \get_option( 'activitypub_post_content_type', 'content' ) ) { return "[ap_title]\n\n[ap_permalink type=\"html\"]"; } if ( 'content' === \get_option( 'activitypub_post_content_type', 'content' ) ) { return "[ap_content]\n\n[ap_permalink type=\"html\"]\n\n[ap_hashtags]"; } return \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT ); } /** * Helper function to get the @-Mentions from the post content. * * @return array The list of @-Mentions. */ protected function get_mentions() { return apply_filters( 'activitypub_extract_mentions', array(), $this->wp_post->post_content, $this->wp_post ); } }