360 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			360 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * ActivityPub Actors REST-Class
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 *
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 * @package Activitypub
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 */
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namespace Activitypub\Rest;
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use Activitypub\Collection\Actors as Actor_Collection;
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use Activitypub\Webfinger;
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use function Activitypub\is_activitypub_request;
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/**
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 * ActivityPub Actors REST-Class.
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 *
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 * @author Matthias Pfefferle
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 *
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 * @see https://www.w3.org/TR/activitypub/#followers
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 */
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class Actors_Controller extends \WP_REST_Controller {
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	/**
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	 * The namespace of this controller's route.
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	 *
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	 * @var string
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	 */
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	protected $namespace = ACTIVITYPUB_REST_NAMESPACE;
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	/**
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	 * The base of this controller's route.
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	 *
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	 * @var string
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	 */
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	protected $rest_base = '(?:users|actors)\/(?P<user_id>[\w\-\.]+)';
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	/**
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	 * Register routes.
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	 */
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	public function register_routes() {
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		\register_rest_route(
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			$this->namespace,
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			'/' . $this->rest_base,
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			array(
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				'args'   => array(
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					'user_id' => array(
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						'description' => 'The ID or username of the actor.',
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						'type'        => 'string',
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						'required'    => true,
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						'pattern'     => '[\w\-\.]+',
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					),
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				),
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				array(
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					'methods'             => \WP_REST_Server::READABLE,
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					'callback'            => array( $this, 'get_item' ),
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					'permission_callback' => array( 'Activitypub\Rest\Server', 'verify_signature' ),
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				),
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				'schema' => array( $this, 'get_public_item_schema' ),
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			)
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		);
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		\register_rest_route(
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			$this->namespace,
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			'/' . $this->rest_base . '/remote-follow',
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			array(
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				'args' => array(
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					'user_id' => array(
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						'description' => 'The ID or username of the actor.',
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						'type'        => 'string',
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						'required'    => true,
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						'pattern'     => '[\w\-\.]+',
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					),
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				),
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				array(
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					'methods'             => \WP_REST_Server::READABLE,
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					'callback'            => array( $this, 'get_remote_follow_item' ),
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					'permission_callback' => '__return_true',
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					'args'                => array(
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						'resource' => array(
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							'description' => 'The resource to follow.',
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							'type'        => 'string',
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							'required'    => true,
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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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	/**
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	 * Retrieves a single actor.
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	 *
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	 * @param \WP_REST_Request $request Full details about the request.
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	 * @return \WP_REST_Response|\WP_Error Response object on success, or WP_Error object on failure.
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	 */
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	public function get_item( $request ) {
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		$user_id = $request->get_param( 'user_id' );
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		$user    = Actor_Collection::get_by_various( $user_id );
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		if ( \is_wp_error( $user ) ) {
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			return $user;
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		}
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		/**
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		 * Action triggered prior to the ActivityPub profile being created and sent to the client.
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		 */
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		\do_action( 'activitypub_rest_users_pre' );
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		$data = $user->to_array();
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		$response = \rest_ensure_response( $data );
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		$response->header( 'Content-Type', 'application/activity+json; charset=' . \get_option( 'blog_charset' ) );
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		$response->header( 'Link', \sprintf( '<%1$s>; rel="alternate"; type="application/activity+json"', $user->get_id() ) );
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		return $response;
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	}
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	/**
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	 * Retrieves the remote follow endpoint.
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	 *
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	 * @param \WP_REST_Request $request Full details about the request.
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	 * @return \WP_REST_Response|\WP_Error Response object on success, or WP_Error object on failure.
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	 */
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	public function get_remote_follow_item( $request ) {
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		$resource = $request->get_param( 'resource' );
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		$user_id  = $request->get_param( 'user_id' );
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		$user     = Actor_Collection::get_by_various( $user_id );
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		if ( \is_wp_error( $user ) ) {
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			return $user;
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		}
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		$template = Webfinger::get_remote_follow_endpoint( $resource );
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		if ( \is_wp_error( $template ) ) {
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			return $template;
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		}
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		$resource = $user->get_webfinger();
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		$url      = \str_replace( '{uri}', $resource, $template );
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		return \rest_ensure_response(
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			array(
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				'url'      => $url,
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				'template' => $template,
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			)
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		);
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	}
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	/**
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	 * Retrieves the actor schema, conforming to JSON Schema.
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	 *
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	 * @return array Item schema data.
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	 */
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	public function get_item_schema() {
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		if ( $this->schema ) {
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			return $this->add_additional_fields_schema( $this->schema );
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		}
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		$this->schema = array(
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			'$schema'    => 'http://json-schema.org/draft-04/schema#',
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			'title'      => 'actor',
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			'type'       => 'object',
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			'properties' => array(
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				'@context'                  => array(
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					'description' => 'The JSON-LD context for the response.',
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					'type'        => array( 'array', 'object' ),
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					'readonly'    => true,
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				),
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				'id'                        => array(
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					'description' => 'The unique identifier for the actor.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'type'                      => array(
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					'description' => 'The type of the actor.',
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					'type'        => 'string',
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					'enum'        => array( 'Person', 'Service', 'Organization', 'Application', 'Group' ),
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					'readonly'    => true,
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				),
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				'attachment'                => array(
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					'description' => 'Additional information attached to the actor.',
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					'type'        => 'array',
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					'items'       => array(
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						'type'       => 'object',
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						'properties' => array(
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							'type'  => array(
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								'type' => 'string',
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								'enum' => array( 'PropertyValue', 'Link' ),
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							),
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							'name'  => array(
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								'type' => 'string',
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							),
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							'value' => array(
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								'type' => 'string',
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							),
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							'href'  => array(
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								'type'   => 'string',
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								'format' => 'uri',
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							),
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							'rel'   => array(
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								'type'  => 'array',
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								'items' => array(
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									'type' => 'string',
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								),
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							),
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						),
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					),
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					'readonly'    => true,
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				),
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				'name'                      => array(
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					'description' => 'The display name of the actor.',
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					'type'        => 'string',
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					'readonly'    => true,
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				),
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				'icon'                      => array(
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					'description' => 'The icon/avatar of the actor.',
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					'type'        => 'object',
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					'properties'  => array(
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						'type' => array(
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							'type' => 'string',
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						),
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						'url'  => array(
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							'type'   => 'string',
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							'format' => 'uri',
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						),
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					),
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					'readonly'    => true,
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				),
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				'published'                 => array(
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					'description' => 'The date the actor was published.',
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					'type'        => 'string',
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					'format'      => 'date-time',
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					'readonly'    => true,
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				),
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				'summary'                   => array(
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					'description' => 'A summary about the actor.',
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					'type'        => 'string',
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					'readonly'    => true,
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				),
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				'tag'                       => array(
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					'description' => 'Tags associated with the actor.',
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					'type'        => 'array',
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					'items'       => array(
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						'type'       => 'object',
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						'properties' => array(
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							'type' => array(
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								'type' => 'string',
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							),
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							'href' => array(
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								'type'   => 'string',
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								'format' => 'uri',
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							),
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							'name' => array(
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								'type' => 'string',
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							),
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						),
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					),
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					'readonly'    => true,
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				),
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				'url'                       => array(
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					'description' => 'The URL to the actor\'s profile page.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'inbox'                     => array(
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					'description' => 'The inbox endpoint for the actor.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'outbox'                    => array(
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					'description' => 'The outbox endpoint for the actor.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'following'                 => array(
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					'description' => 'The following endpoint for the actor.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'followers'                 => array(
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					'description' => 'The followers endpoint for the actor.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'streams'                   => array(
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					'description' => 'The streams associated with the actor.',
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					'type'        => 'array',
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					'readonly'    => true,
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				),
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				'preferredUsername'         => array(
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					'description' => 'The preferred username of the actor.',
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					'type'        => 'string',
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					'readonly'    => true,
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				),
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				'publicKey'                 => array(
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					'description' => 'The public key information for the actor.',
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					'type'        => 'object',
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					'properties'  => array(
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						'id'           => array(
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							'type'   => 'string',
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							'format' => 'uri',
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						),
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						'owner'        => array(
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							'type'   => 'string',
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							'format' => 'uri',
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						),
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						'publicKeyPem' => array(
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							'type' => 'string',
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						),
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					),
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					'readonly'    => true,
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				),
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				'manuallyApprovesFollowers' => array(
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					'description' => 'Whether the actor manually approves followers.',
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					'type'        => 'boolean',
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					'readonly'    => true,
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				),
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				'attributionDomains'        => array(
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					'description' => 'The attribution domains for the actor.',
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					'type'        => 'array',
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					'items'       => array(
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						'type' => 'string',
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					),
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					'readonly'    => true,
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				),
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				'featured'                  => array(
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					'description' => 'The featured collection endpoint for the actor.',
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					'type'        => 'string',
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					'format'      => 'uri',
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					'readonly'    => true,
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				),
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				'indexable'                 => array(
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					'description' => 'Whether the actor is indexable.',
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					'type'        => 'boolean',
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					'readonly'    => true,
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				),
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				'webfinger'                 => array(
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					'description' => 'The webfinger identifier for the actor.',
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					'type'        => 'string',
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					'readonly'    => true,
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				),
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				'discoverable'              => array(
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					'description' => 'Whether the actor is discoverable.',
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					'type'        => 'boolean',
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					'readonly'    => true,
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				),
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			),
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		);
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		return $this->add_additional_fields_schema( $this->schema );
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	}
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}
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