| 1 |
<?php |
| 2 |
/** |
| 3 |
* Blocks file. |
| 4 |
* |
| 5 |
* @package Activitypub |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace Activitypub; |
| 9 |
|
| 10 |
use Activitypub\Collection\Actors; |
| 11 |
|
| 12 |
/** |
| 13 |
* Block class. |
| 14 |
*/ |
| 15 |
class Blocks { |
| 16 |
/** |
| 17 |
* Initialize the class, registering WordPress hooks. |
| 18 |
*/ |
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public static function init() { |
| 20 |
// This is already being called on the init hook, so just add it. |
| 21 |
self::register_blocks(); |
| 22 |
|
| 23 |
\add_action( 'load-post-new.php', array( self::class, 'handle_in_reply_to_get_param' ) ); |
| 24 |
// Add editor plugin. |
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\add_action( 'enqueue_block_editor_assets', array( self::class, 'enqueue_editor_assets' ) ); |
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\add_action( 'rest_api_init', array( self::class, 'register_rest_fields' ) ); |
| 27 |
|
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\add_filter( 'activitypub_import_mastodon_post_data', array( self::class, 'filter_import_mastodon_post_data' ), 10, 2 ); |
| 29 |
|
| 30 |
\add_action( 'activitypub_before_get_content', array( self::class, 'add_post_transformation_callbacks' ) ); |
| 31 |
\add_filter( 'activitypub_the_content', array( self::class, 'remove_post_transformation_callbacks' ) ); |
| 32 |
} |
| 33 |
|
| 34 |
/** |
| 35 |
* Enqueue the block editor assets. |
| 36 |
*/ |
| 37 |
public static function enqueue_editor_assets() { |
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$data = array( |
| 39 |
'namespace' => ACTIVITYPUB_REST_NAMESPACE, |
| 40 |
'defaultAvatarUrl' => ACTIVITYPUB_PLUGIN_URL . 'assets/img/mp.jpg', |
| 41 |
'enabled' => array( |
| 42 |
'blog' => ! is_user_type_disabled( 'blog' ), |
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'users' => ! is_user_type_disabled( 'user' ), |
| 44 |
), |
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'profileUrls' => array( |
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'user' => \admin_url( 'profile.php#activitypub' ), |
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'blog' => \admin_url( 'options-general.php?page=activitypub&tab=blog-profile' ), |
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), |
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'showAvatars' => (bool) \get_option( 'show_avatars' ), |
| 50 |
); |
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wp_localize_script( 'wp-editor', '_activityPubOptions', $data ); |
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|
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// Check for our supported post types. |
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$current_screen = \get_current_screen(); |
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$ap_post_types = \get_post_types_by_support( 'activitypub' ); |
| 56 |
if ( ! $current_screen || ! in_array( $current_screen->post_type, $ap_post_types, true ) ) { |
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return; |
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} |
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|
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$asset_data = include ACTIVITYPUB_PLUGIN_DIR . 'build/editor-plugin/plugin.asset.php'; |
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$plugin_url = plugins_url( 'build/editor-plugin/plugin.js', ACTIVITYPUB_PLUGIN_FILE ); |
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wp_enqueue_script( 'activitypub-block-editor', $plugin_url, $asset_data['dependencies'], $asset_data['version'], true ); |
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} |
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|
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/** |
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* Enqueue the reply handle script if the in_reply_to GET param is set. |
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*/ |
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public static function handle_in_reply_to_get_param() { |
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// Only load the script if the in_reply_to GET param is set, action happens there, not here. |
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// phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 71 |
if ( ! isset( $_GET['in_reply_to'] ) ) { |
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return; |
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} |
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|
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$asset_data = include ACTIVITYPUB_PLUGIN_DIR . 'build/reply-intent/plugin.asset.php'; |
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$plugin_url = plugins_url( 'build/reply-intent/plugin.js', ACTIVITYPUB_PLUGIN_FILE ); |
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wp_enqueue_script( 'activitypub-reply-intent', $plugin_url, $asset_data['dependencies'], $asset_data['version'], true ); |
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} |
| 79 |
|
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/** |
| 81 |
* Register the blocks. |
| 82 |
*/ |
| 83 |
public static function register_blocks() { |
| 84 |
\register_block_type_from_metadata( ACTIVITYPUB_PLUGIN_DIR . '/build/extra-fields' ); |
| 85 |
\register_block_type_from_metadata( ACTIVITYPUB_PLUGIN_DIR . '/build/follow-me' ); |
| 86 |
\register_block_type_from_metadata( ACTIVITYPUB_PLUGIN_DIR . '/build/followers' ); |
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// Register reactions block, conditionally removing facepile style if avatars are disabled. |
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$reactions_args = array(); |
| 89 |
if ( ! \get_option( 'show_avatars', true ) ) { |
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$reactions_args['styles'] = array(); |
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} |
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\register_block_type_from_metadata( ACTIVITYPUB_PLUGIN_DIR . '/build/reactions', $reactions_args ); |
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|
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\register_block_type_from_metadata( |
| 95 |
ACTIVITYPUB_PLUGIN_DIR . '/build/reply', |
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array( |
| 97 |
'render_callback' => array( self::class, 'render_reply_block' ), |
| 98 |
) |
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); |
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} |
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|
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/** |
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* Register REST fields needed for blocks. |
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*/ |
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public static function register_rest_fields() { |
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// Register the post_count field for Follow Me block. |
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register_rest_field( |
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'user', |
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'post_count', |
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array( |
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/** |
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* Get the number of published posts. |
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* |
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* @param array $response Prepared response array. |
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* @param string $field_name The field name. |
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* @param \WP_REST_Request $request The request object. |
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* @return int The number of published posts. |
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*/ |
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'get_callback' => static function ( $response, $field_name, $request ) { |
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return (int) count_user_posts( $request->get_param( 'id' ), 'post', true ); |
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}, |
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'schema' => array( |
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'description' => 'Number of published posts', |
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'type' => 'integer', |
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'context' => array( 'activitypub' ), |
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), |
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) |
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); |
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} |
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|
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/** |
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* Get the user ID from a user string. |
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* |
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* @param string $user_string The user string. Can be a user ID, 'blog', or 'inherit'. |
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* @return int|null The user ID, or null if the 'inherit' string is not supported in this context. |
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*/ |
| 137 |
public static function get_user_id( $user_string ) { |
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if ( is_numeric( $user_string ) ) { |
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return absint( $user_string ); |
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} |
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|
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// If the user string is 'blog', return the Blog User ID. |
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if ( 'blog' === $user_string ) { |
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return Actors::BLOG_USER_ID; |
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} |
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|
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// The only other value should be 'inherit', which means to use the query context to determine the User. |
| 148 |
if ( 'inherit' !== $user_string ) { |
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return null; |
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} |
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|
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// For a homepage/front page, if the Blog User is active, use it. |
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if ( ( is_front_page() || is_home() ) && ! is_user_type_disabled( 'blog' ) ) { |
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return Actors::BLOG_USER_ID; |
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} |
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|
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// If we're in a loop, use the post author. |
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$author_id = get_the_author_meta( 'ID' ); |
| 159 |
if ( $author_id ) { |
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return $author_id; |
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} |
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|
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// For other pages, the queried object will clue us in. |
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$queried_object = get_queried_object(); |
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if ( ! $queried_object ) { |
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return null; |
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} |
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|
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// If we're on a user archive page, use that user's ID. |
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if ( is_a( $queried_object, 'WP_User' ) ) { |
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return $queried_object->ID; |
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} |
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|
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// For a single post, use the post author's ID. |
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if ( is_a( $queried_object, 'WP_Post' ) ) { |
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return get_the_author_meta( 'ID' ); |
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} |
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|
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// We won't properly account for some conditions, like tag archives. |
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return null; |
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} |
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|
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/** |
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* Render the reply block. |
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* |
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* @param array $attrs The block attributes. |
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* |
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* @return string The HTML to render. |
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*/ |
| 190 |
public static function render_reply_block( $attrs ) { |
| 191 |
if ( is_activitypub_request() ) { |
| 192 |
$attrs['embedPost'] = false; |
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} |
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|
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// Return early if no URL is provided. |
| 196 |
if ( empty( $attrs['url'] ) ) { |
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return null; |
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} |
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|
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$show_embed = isset( $attrs['embedPost'] ) && $attrs['embedPost']; |
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|
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$wrapper_attrs = get_block_wrapper_attributes( |
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array( |
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'aria-label' => __( 'Reply', 'activitypub' ), |
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'class' => 'activitypub-reply-block', |
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'data-in-reply-to' => $attrs['url'], |
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) |
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); |
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|
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$html = '<div ' . $wrapper_attrs . '>'; |
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|
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// Try to get and append the embed if requested. |
| 213 |
$embed = null; |
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if ( $show_embed ) { |
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$embed = wp_oembed_get( $attrs['url'] ); |
| 216 |
if ( $embed ) { |
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$html .= $embed; |
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\wp_enqueue_script( 'wp-embed' ); |
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} |
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} |
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|
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// Show the link if embed is not requested or if embed failed. |
| 223 |
if ( ! $show_embed || ! $embed ) { |
| 224 |
$html .= sprintf( |
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'<p><a title="%2$s" aria-label="%2$s" href="%1$s" class="u-in-reply-to" target="_blank">%3$s</a></p>', |
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esc_url( $attrs['url'] ), |
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esc_attr__( 'This post is a response to the referenced content.', 'activitypub' ), |
| 228 |
// translators: %s is the URL of the post being replied to. |
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sprintf( __( '↬%s', 'activitypub' ), \str_replace( array( 'https://', 'http://' ), '', esc_url( $attrs['url'] ) ) ) |
| 230 |
); |
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} |
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|
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$html .= '</div>'; |
| 234 |
|
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return $html; |
| 236 |
} |
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|
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/** |
| 239 |
* Renders a modal component that can be used by different blocks. |
| 240 |
* |
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* @param array $args Arguments for the modal. |
| 242 |
*/ |
| 243 |
public static function render_modal( $args = array() ) { |
| 244 |
$defaults = array( |
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'content' => '', |
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'id' => '', |
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'is_compact' => false, |
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'title' => '', |
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); |
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|
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$args = \wp_parse_args( $args, $defaults ); |
| 252 |
?> |
| 253 |
|
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<div |
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class="activitypub-modal__overlay<?php echo \esc_attr( $args['is_compact'] ? ' compact' : '' ); ?>" |
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data-wp-bind--hidden="!context.modal.isOpen" |
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data-wp-watch="callbacks.handleModalEffects" |
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role="dialog" |
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aria-modal="true" |
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hidden |
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> |
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<div class="activitypub-modal__frame"> |
| 263 |
<?php if ( ! $args['is_compact'] || ! empty( $args['title'] ) ) : ?> |
| 264 |
<div class="activitypub-modal__header"> |
| 265 |
<h2 |
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class="activitypub-modal__title" |
| 267 |
<?php if ( ! empty( $args['id'] ) ) : ?> |
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id="<?php echo \esc_attr( $args['id'] . '-title' ); ?>" |
| 269 |
<?php endif; ?> |
| 270 |
><?php echo \esc_html( $args['title'] ); ?></h2> |
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<button |
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type="button" |
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class="activitypub-modal__close wp-element-button wp-block-button__link" |
| 274 |
data-wp-on--click="actions.closeModal" |
| 275 |
aria-label="<?php echo \esc_attr__( 'Close dialog', 'activitypub' ); ?>" |
| 276 |
> |
| 277 |
<svg fill="currentColor" width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false"> |
| 278 |
<path d="M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z"></path> |
| 279 |
</svg> |
| 280 |
</button> |
| 281 |
</div> |
| 282 |
<?php endif; ?> |
| 283 |
<div class="activitypub-modal__content"> |
| 284 |
<?php echo $args['content']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?> |
| 285 |
</div> |
| 286 |
</div> |
| 287 |
</div> |
| 288 |
<?php |
| 289 |
} |
| 290 |
|
| 291 |
/** |
| 292 |
* Converts content to blocks before saving to the database. |
| 293 |
* |
| 294 |
* @param array $data The post data to be inserted. |
| 295 |
* @param array $post The Mastodon Create activity. |
| 296 |
* |
| 297 |
* @return array |
| 298 |
*/ |
| 299 |
public static function filter_import_mastodon_post_data( $data, $post ) { |
| 300 |
// Convert paragraphs to blocks. |
| 301 |
\preg_match_all( '#<p>.*?</p>#is', $data['post_content'], $matches ); |
| 302 |
$blocks = \array_map( |
| 303 |
static function ( $paragraph ) { |
| 304 |
return '<!-- wp:paragraph -->' . PHP_EOL . $paragraph . PHP_EOL . '<!-- /wp:paragraph -->' . PHP_EOL; |
| 305 |
}, |
| 306 |
$matches[0] ?? array() |
| 307 |
); |
| 308 |
|
| 309 |
$data['post_content'] = \rtrim( \implode( PHP_EOL, $blocks ), PHP_EOL ); |
| 310 |
|
| 311 |
// Add reply block if it's a reply. |
| 312 |
if ( ! empty( $post['object']['inReplyTo'] ) ) { |
| 313 |
$reply_block = \sprintf( '<!-- wp:activitypub/reply {"url":"%1$s","embedPost":true} /-->' . PHP_EOL, \esc_url( $post['object']['inReplyTo'] ) ); |
| 314 |
$data['post_content'] = $reply_block . $data['post_content']; |
| 315 |
} |
| 316 |
|
| 317 |
return $data; |
| 318 |
} |
| 319 |
|
| 320 |
/** |
| 321 |
* Add Interactivity directions to the specified element. |
| 322 |
* |
| 323 |
* @param string $content The block content. |
| 324 |
* @param string[] $selector The selector for the element to add directions to. |
| 325 |
* @param string[] $attributes The attributes to add to the element. |
| 326 |
* |
| 327 |
* @return string The updated content. |
| 328 |
*/ |
| 329 |
public static function add_directions( $content, $selector, $attributes ) { |
| 330 |
$tags = new \WP_HTML_Tag_Processor( $content ); |
| 331 |
|
| 332 |
while ( $tags->next_tag( $selector ) ) { |
| 333 |
foreach ( $attributes as $key => $value ) { |
| 334 |
if ( 'class' === $key ) { |
| 335 |
$tags->add_class( $value ); |
| 336 |
continue; |
| 337 |
} |
| 338 |
|
| 339 |
$tags->set_attribute( $key, $value ); |
| 340 |
} |
| 341 |
} |
| 342 |
|
| 343 |
return $tags->get_updated_html(); |
| 344 |
} |
| 345 |
|
| 346 |
/** |
| 347 |
* Add post transformation callbacks. |
| 348 |
* |
| 349 |
* @param object $post The post object. |
| 350 |
*/ |
| 351 |
public static function add_post_transformation_callbacks( $post ) { |
| 352 |
\add_filter( 'render_block_core/embed', array( self::class, 'revert_embed_links' ), 10, 2 ); |
| 353 |
|
| 354 |
// Only transform reply link if it's the first block in the post. |
| 355 |
$blocks = \parse_blocks( $post->post_content ); |
| 356 |
if ( ! empty( $blocks ) && 'activitypub/reply' === $blocks[0]['blockName'] ) { |
| 357 |
\add_filter( 'render_block_activitypub/reply', array( self::class, 'generate_reply_link' ), 10, 2 ); |
| 358 |
} |
| 359 |
} |
| 360 |
|
| 361 |
/** |
| 362 |
* Remove post transformation callbacks. |
| 363 |
* |
| 364 |
* @param string $content The post content. |
| 365 |
* |
| 366 |
* @return string The updated content. |
| 367 |
*/ |
| 368 |
public static function remove_post_transformation_callbacks( $content ) { |
| 369 |
\remove_filter( 'render_block_core/embed', array( self::class, 'revert_embed_links' ) ); |
| 370 |
\remove_filter( 'render_block_activitypub/reply', array( self::class, 'generate_reply_link' ) ); |
| 371 |
|
| 372 |
return $content; |
| 373 |
} |
| 374 |
|
| 375 |
/** |
| 376 |
* Generate HTML @ link for reply block. |
| 377 |
* |
| 378 |
* @param string $block_content The block content. |
| 379 |
* @param array $block The block data. |
| 380 |
* |
| 381 |
* @return string The HTML @ link. |
| 382 |
*/ |
| 383 |
public static function generate_reply_link( $block_content, $block ) { |
| 384 |
// Unhook ourselves after first execution to ensure only the first reply block gets transformed. |
| 385 |
\remove_filter( 'render_block_activitypub/reply', array( self::class, 'generate_reply_link' ) ); |
| 386 |
|
| 387 |
// Return empty string if no URL is provided. |
| 388 |
if ( empty( $block['attrs']['url'] ) ) { |
| 389 |
return ''; |
| 390 |
} |
| 391 |
|
| 392 |
$url = $block['attrs']['url']; |
| 393 |
|
| 394 |
// Try to get ActivityPub representation. Is likely already cached. |
| 395 |
$object = Http::get_remote_object( $url ); |
| 396 |
if ( \is_wp_error( $object ) ) { |
| 397 |
return ''; |
| 398 |
} |
| 399 |
|
| 400 |
$author_url = $object['attributedTo'] ?? ''; |
| 401 |
if ( ! $author_url ) { |
| 402 |
return ''; |
| 403 |
} |
| 404 |
|
| 405 |
// Fetch author information. |
| 406 |
$author = Http::get_remote_object( $author_url ); |
| 407 |
if ( \is_wp_error( $author ) ) { |
| 408 |
return ''; |
| 409 |
} |
| 410 |
|
| 411 |
// Get webfinger identifier. |
| 412 |
$webfinger = ''; |
| 413 |
if ( ! empty( $author['webfinger'] ) ) { |
| 414 |
$webfinger = \str_replace( 'acct:', '', $author['webfinger'] ); |
| 415 |
} elseif ( ! empty( $author['preferredUsername'] ) && ! empty( $author['url'] ) ) { |
| 416 |
// Construct webfinger-style identifier from username and domain. |
| 417 |
$domain = \wp_parse_url( $author['url'], PHP_URL_HOST ); |
| 418 |
$webfinger = '@' . $author['preferredUsername'] . '@' . $domain; |
| 419 |
} |
| 420 |
|
| 421 |
if ( ! $webfinger ) { |
| 422 |
return ''; |
| 423 |
} |
| 424 |
|
| 425 |
// Generate HTML @ link. |
| 426 |
return \sprintf( |
| 427 |
'<p class="ap-reply-mention"><a rel="mention ugc" href="%1$s" title="%2$s">%3$s</a></p>', |
| 428 |
\esc_url( $url ), |
| 429 |
\esc_attr( $webfinger ), |
| 430 |
\esc_html( '@' . strtok( $webfinger, '@' ) ) |
| 431 |
); |
| 432 |
} |
| 433 |
|
| 434 |
/** |
| 435 |
* Transform Embed blocks to block level link. |
| 436 |
* |
| 437 |
* Remote servers will simply drop iframe elements, rendering incomplete content. |
| 438 |
* |
| 439 |
* @see https://www.w3.org/TR/activitypub/#security-sanitizing-content |
| 440 |
* @see https://www.w3.org/wiki/ActivityPub/Primer/HTML |
| 441 |
* |
| 442 |
* @param string $block_content The block content (html). |
| 443 |
* @param object $block The block object. |
| 444 |
* |
| 445 |
* @return string A block level link |
| 446 |
*/ |
| 447 |
public static function revert_embed_links( $block_content, $block ) { |
| 448 |
if ( ! isset( $block['attrs']['url'] ) ) { |
| 449 |
return $block_content; |
| 450 |
} |
| 451 |
return '<p><a href="' . esc_url( $block['attrs']['url'] ) . '">' . $block['attrs']['url'] . '</a></p>'; |
| 452 |
} |
| 453 |
} |
| 454 |
|
