array( 'href' => array(), 'title' => array(), 'class' => array(), 'rel' => array(), ), 'br' => array(), 'p' => array( 'class' => array(), ), 'span' => array( 'class' => array(), ), 'div' => array( 'class' => array(), ), ); /** * List of audience * * Also used for visibility * * @var array */ private $to = array( 'https://www.w3.org/ns/activitystreams#Public' ); /** * List of audience * * Also used for visibility * * @var array */ private $cc = array(); /** * Constructor * * @param WP_Post $post */ public function __construct( $post ) { $this->post = \get_post( $post ); $this->add_to( \get_rest_url( null, '/activitypub/1.0/users/' . intval( $this->get_post_author() ) . '/followers' ) ); } /** * Magic function to implement getter and setter * * @param string $method * @param string $params * * @return void */ public function __call( $method, $params ) { $var = \strtolower( \substr( $method, 4 ) ); if ( \strncasecmp( $method, 'get', 3 ) === 0 ) { if ( empty( $this->$var ) && ! empty( $this->post->$var ) ) { return $this->post->$var; } return $this->$var; } if ( \strncasecmp( $method, 'set', 3 ) === 0 ) { $this->$var = $params[0]; } if ( \strncasecmp( $method, 'add', 3 ) === 0 ) { if ( ! is_array( $this->$var ) ) { $this->$var = $params[0]; } if ( is_array( $params[0] ) ) { $this->$var = array_merge( $this->$var, $params[0] ); } else { array_push( $this->$var, $params[0] ); } $this->$var = array_unique( $this->$var ); } } /** * Converts this Object into an Array. * * @return array */ public function to_array() { $post = $this->post; $array = array( 'id' => $this->get_id(), 'type' => $this->get_object_type(), 'published' => \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $post->post_date_gmt ) ), 'attributedTo' => \get_author_posts_url( $post->post_author ), 'summary' => $this->get_summary(), 'inReplyTo' => null, 'content' => $this->get_content(), 'contentMap' => array( \strstr( \get_locale(), '_', true ) => $this->get_content(), ), 'to' => $this->get_to(), 'cc' => $this->get_cc(), 'attachment' => $this->get_attachments(), 'tag' => $this->get_tags(), ); return \apply_filters( 'activitypub_post', $array ); } /** * Converts this Object into a JSON String * * @return string */ public function to_json() { return \wp_json_encode( $this->to_array(), \JSON_HEX_TAG | \JSON_HEX_AMP | \JSON_HEX_QUOT ); } /** * Returns the ID of an Activity Object * * @return string */ public function get_id() { if ( $this->id ) { return $this->id; } $post = $this->post; if ( 'trash' === get_post_status( $post ) ) { $permalink = \get_post_meta( $post->ID, 'activitypub_canonical_url', true ); } else { $permalink = \get_permalink( $post ); } $this->id = $permalink; return $permalink; } /** * Returns a list of Image Attachments * * @return array */ public function get_attachments() { if ( $this->attachments ) { return $this->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->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 ) { // then list any image attachments $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 ) { $alt = \get_post_meta( $id, '_wp_attachment_image_alt', true ); $thumbnail = \wp_get_attachment_image_src( $id, 'full' ); $mimetype = \get_post_mime_type( $id ); if ( $thumbnail ) { $image = array( 'type' => 'Image', 'url' => $thumbnail[0], 'mediaType' => $mimetype, ); if ( $alt ) { $image['name'] = $alt; } $images[] = $image; } } $this->attachments = $images; return $images; } /** * Returns a list of Tags, used in the Post * * @return array */ public function get_tags() { if ( $this->tags ) { return $this->tags; } $tags = array(); $post_tags = \get_the_tags( $this->post->ID ); if ( $post_tags ) { foreach ( $post_tags as $post_tag ) { $tag = array( 'type' => 'Hashtag', 'href' => \get_tag_link( $post_tag->term_id ), 'name' => '#' . $post_tag->slug, ); $tags[] = $tag; } } $mentions = apply_filters( 'activitypub_extract_mentions', array(), $this->post->post_content, $this ); if ( $mentions ) { foreach ( $mentions as $mention => $url ) { $tag = array( 'type' => 'Mention', 'href' => $url, 'name' => $mention, ); $tags[] = $tag; } } $this->tags = $tags; return $tags; } /** * Returns the as2 object-type for a given post * * @return string the object-type */ public function get_object_type() { if ( $this->object_type ) { return $this->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->post ); switch ( $post_type ) { case 'post': $post_format = \get_post_format( $this->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; } $this->object_type = $object_type; return $object_type; } /** * Returns the content for the ActivityPub Item. * * @return string the content */ public function get_content() { if ( $this->content ) { return $this->content; } $post = $this->post; $content = $this->get_post_content_template(); // Fill in the shortcodes. setup_postdata( $post ); $content = do_shortcode( $content ); wp_reset_postdata(); $content = \wpautop( \wp_kses( $content, $this->allowed_tags ) ); $filtered_content = \apply_filters( 'activitypub_the_content', $content, $post ); $decoded_content = \html_entity_decode( $filtered_content, \ENT_QUOTES, 'UTF-8' ); $content = \trim( \preg_replace( '/[\n\r\t]/', '', $content ) ); $this->content = $content; return $content; } /** * Gets the template to use to generate the content of the activitypub item. * * @return string the template */ public function get_post_content_template() { if ( 'excerpt' === \get_option( 'activitypub_post_content_type', 'content' ) ) { return "[ap_excerpt]\n\n[ap_permalink]"; } if ( 'title' === \get_option( 'activitypub_post_content_type', 'content' ) ) { return "[ap_title]\n\n[ap_permalink]"; } if ( 'content' === \get_option( 'activitypub_post_content_type', 'content' ) ) { return "[ap_content]\n\n[ap_hashtags]\n\n[ap_permalink]"; } // Upgrade from old template codes to shortcodes. $content = self::upgrade_post_content_template(); return $content; } /** * Updates the custom template to use shortcodes instead of the deprecated templates. * * @return string the updated template content */ public static function upgrade_post_content_template() { // Get the custom template. $old_content = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT ); // If the old content exists but is a blank string, we're going to need a flag to updated it even // after setting it to the default contents. $need_update = false; // If the old contents is blank, use the defaults. if ( '' === $old_content ) { $old_content = ACTIVITYPUB_CUSTOM_POST_CONTENT; $need_update = true; } // Set the new content to be the old content. $content = $old_content; // Convert old templates to shortcodes. $content = \str_replace( '%title%', '[ap_title]', $content ); $content = \str_replace( '%excerpt%', '[ap_excerpt]', $content ); $content = \str_replace( '%content%', '[ap_content]', $content ); $content = \str_replace( '%permalink%', '[ap_permalink type="html"]', $content ); $content = \str_replace( '%shortlink%', '[ap_shortlink type="html"]', $content ); $content = \str_replace( '%hashtags%', '[ap_hashtags]', $content ); $content = \str_replace( '%tags%', '[ap_hashtags]', $content ); // Store the new template if required. if ( $content !== $old_content || $need_update ) { \update_option( 'activitypub_custom_post_content', $content ); } return $content; } /** * Adds all tags as hashtags to the post/summary content * * @param string $content * @param WP_Post $post * * @return string */ public function get_the_mentions() { $post = $this->post; $tags = \get_the_tags( $post->ID ); if ( ! $tags ) { return ''; } $hash_tags = array(); foreach ( $tags as $tag ) { $hash_tags[] = \sprintf( '', \get_tag_link( $tag ), $tag->slug ); } return \implode( ' ', $hash_tags ); } }