activitypub / includes / rest / class-actors.php

class-actors.php in ActivityPub 4.0.2, at includes/rest/class-actors.php

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1	<?php
2	/**
3	* ActivityPub Actors REST-Class
4	*
5	* @package Activitypub
6	*/
7
8	namespace Activitypub\Rest;
9
10	use WP_REST_Server;
11	use WP_REST_Request;
12	use WP_REST_Response;
13	use Activitypub\Webfinger;
14	use Activitypub\Collection\Users as User_Collection;
15
16	use function Activitypub\is_activitypub_request;
17
18	/**
19	* ActivityPub Actors REST-Class.
20	*
21	* @author Matthias Pfefferle
22	*
23	* @see https://www.w3.org/TR/activitypub/#followers
24	*/
25	class Actors {
26	/**
27	* Initialize the class, registering WordPress hooks.
28	*/
29	public static function init() {
30	self::register_routes();
31	}
32
33	/**
34	* Register routes.
35	*/
36	public static function register_routes() {
37	\register_rest_route(
38	ACTIVITYPUB_REST_NAMESPACE,
39	'/(users\|actors)/(?P<user_id>[\w\-\.]+)',
40	array(
41	array(
42	'methods' => WP_REST_Server::READABLE,
43	'callback' => array( self::class, 'get' ),
44	'permission_callback' => '__return_true',
45	),
46	)
47	);
48
49	\register_rest_route(
50	ACTIVITYPUB_REST_NAMESPACE,
51	'/(users\|actors)/(?P<user_id>[\w\-\.]+)/remote-follow',
52	array(
53	array(
54	'methods' => WP_REST_Server::READABLE,
55	'callback' => array( self::class, 'remote_follow_get' ),
56	'permission_callback' => '__return_true',
57	'args' => array(
58	'resource' => array(
59	'required' => true,
60	'sanitize_callback' => 'sanitize_text_field',
61	),
62	),
63	),
64	)
65	);
66	}
67
68	/**
69	* Handle GET request
70	*
71	* @param \WP_REST_Request $request The request object.
72	*
73	* @return WP_REST_Response\|\WP_Error The response object or WP_Error.
74	*/
75	public static function get( $request ) {
76	$user_id = $request->get_param( 'user_id' );
77	$user = User_Collection::get_by_various( $user_id );
78
79	if ( is_wp_error( $user ) ) {
80	return $user;
81	}
82
83	$link_header = sprintf( '<%1$s>; rel="alternate"; type="application/activity+json"', $user->get_id() );
84
85	// Redirect to canonical URL if it is not an ActivityPub request.
86	if ( ! is_activitypub_request() ) {
87	header( 'Link: ' . $link_header );
88	header( 'Location: ' . $user->get_canonical_url(), true, 301 );
89	exit;
90	}
91
92	/**
93	* Action triggered prior to the ActivityPub profile being created and sent to the client.
94	*/
95	\do_action( 'activitypub_rest_users_pre' );
96
97	$json = $user->to_array();
98
99	$rest_response = new WP_REST_Response( $json, 200 );
100	$rest_response->header( 'Content-Type', 'application/activity+json; charset=' . get_option( 'blog_charset' ) );
101	$rest_response->header( 'Link', $link_header );
102
103	return $rest_response;
104	}
105
106
107	/**
108	* Endpoint for remote follow UI/Block.
109	*
110	* @param WP_REST_Request $request The request object.
111	*
112	* @return WP_REST_Response\|\WP_Error The response object or WP_Error.
113	*/
114	public static function remote_follow_get( WP_REST_Request $request ) {
115	$resource = $request->get_param( 'resource' );
116	$user_id = $request->get_param( 'user_id' );
117	$user = User_Collection::get_by_various( $user_id );
118
119	if ( is_wp_error( $user ) ) {
120	return $user;
121	}
122
123	$template = Webfinger::get_remote_follow_endpoint( $resource );
124
125	if ( is_wp_error( $template ) ) {
126	return $template;
127	}
128
129	$resource = $user->get_webfinger();
130	$url = str_replace( '{uri}', $resource, $template );
131
132	return new WP_REST_Response(
133	array(
134	'url' => $url,
135	'template' => $template,
136	),
137	200
138	);
139	}
140	}
141