| 1 |
<?php |
| 2 |
namespace Activitypub\Rest; |
| 3 |
|
| 4 |
/** |
| 5 |
* ActivityPub Inbox REST-Class |
| 6 |
* |
| 7 |
* @author Matthias Pfefferle |
| 8 |
* |
| 9 |
* @see https://www.w3.org/TR/activitypub/#inbox |
| 10 |
*/ |
| 11 |
class Inbox { |
| 12 |
/** |
| 13 |
* Initialize the class, registering WordPress hooks |
| 14 |
*/ |
| 15 |
public static function init() { |
| 16 |
\add_action( 'rest_api_init', array( '\Activitypub\Rest\Inbox', 'register_routes' ) ); |
| 17 |
\add_filter( 'rest_pre_serve_request', array( '\Activitypub\Rest\Inbox', 'serve_request' ), 11, 4 ); |
| 18 |
\add_action( 'activitypub_inbox_follow', array( '\Activitypub\Rest\Inbox', 'handle_follow' ), 10, 2 ); |
| 19 |
\add_action( 'activitypub_inbox_undo', array( '\Activitypub\Rest\Inbox', 'handle_unfollow' ), 10, 2 ); |
| 20 |
//\add_action( 'activitypub_inbox_like', array( '\Activitypub\Rest\Inbox', 'handle_reaction' ), 10, 2 ); |
| 21 |
//\add_action( 'activitypub_inbox_announce', array( '\Activitypub\Rest\Inbox', 'handle_reaction' ), 10, 2 ); |
| 22 |
\add_action( 'activitypub_inbox_create', array( '\Activitypub\Rest\Inbox', 'handle_create' ), 10, 2 ); |
| 23 |
} |
| 24 |
|
| 25 |
/** |
| 26 |
* Register routes |
| 27 |
*/ |
| 28 |
public static function register_routes() { |
| 29 |
\register_rest_route( |
| 30 |
'activitypub/1.0', |
| 31 |
'/inbox', |
| 32 |
array( |
| 33 |
array( |
| 34 |
'methods' => \WP_REST_Server::EDITABLE, |
| 35 |
'callback' => array( '\Activitypub\Rest\Inbox', 'shared_inbox_post' ), |
| 36 |
'args' => self::shared_inbox_request_parameters(), |
| 37 |
'permission_callback' => '__return_true', |
| 38 |
), |
| 39 |
) |
| 40 |
); |
| 41 |
|
| 42 |
\register_rest_route( |
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'activitypub/1.0', |
| 44 |
'/users/(?P<user_id>\d+)/inbox', |
| 45 |
array( |
| 46 |
array( |
| 47 |
'methods' => \WP_REST_Server::EDITABLE, |
| 48 |
'callback' => array( '\Activitypub\Rest\Inbox', 'user_inbox_post' ), |
| 49 |
'args' => self::user_inbox_request_parameters(), |
| 50 |
'permission_callback' => '__return_true', |
| 51 |
), |
| 52 |
array( |
| 53 |
'methods' => \WP_REST_Server::READABLE, |
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'callback' => array( '\Activitypub\Rest\Inbox', 'user_inbox_get' ), |
| 55 |
'permission_callback' => '__return_true', |
| 56 |
), |
| 57 |
) |
| 58 |
); |
| 59 |
} |
| 60 |
|
| 61 |
/** |
| 62 |
* Hooks into the REST API request to verify the signature. |
| 63 |
* |
| 64 |
* @param bool $served Whether the request has already been served. |
| 65 |
* @param WP_HTTP_ResponseInterface $result Result to send to the client. Usually a WP_REST_Response. |
| 66 |
* @param WP_REST_Request $request Request used to generate the response. |
| 67 |
* @param WP_REST_Server $server Server instance. |
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* |
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* @return true |
| 70 |
*/ |
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public static function serve_request( $served, $result, $request, $server ) { |
| 72 |
if ( '/activitypub' !== \substr( $request->get_route(), 0, 12 ) ) { |
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return $served; |
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} |
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|
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$signature = $request->get_header( 'signature' ); |
| 77 |
|
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if ( ! $signature ) { |
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return $served; |
| 80 |
} |
| 81 |
|
| 82 |
$headers = $request->get_headers(); |
| 83 |
|
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// verify signature |
| 85 |
//\Activitypub\Signature::verify_signature( $headers, $key ); |
| 86 |
|
| 87 |
return $served; |
| 88 |
} |
| 89 |
|
| 90 |
/** |
| 91 |
* Renders the user-inbox |
| 92 |
* |
| 93 |
* @param WP_REST_Request $request |
| 94 |
* @return WP_REST_Response |
| 95 |
*/ |
| 96 |
public static function user_inbox_get( $request ) { |
| 97 |
$user_id = $request->get_param( 'user_id' ); |
| 98 |
$page = $request->get_param( 'page', 0 ); |
| 99 |
|
| 100 |
/* |
| 101 |
* Action triggerd prior to the ActivityPub profile being created and sent to the client |
| 102 |
*/ |
| 103 |
\do_action( 'activitypub_inbox_pre' ); |
| 104 |
|
| 105 |
$json = new \stdClass(); |
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|
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$json->{'@context'} = \Activitypub\get_context(); |
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$json->id = \home_url( \add_query_arg( null, null ) ); |
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$json->generator = 'http://wordpress.org/?v=' . \get_bloginfo_rss( 'version' ); |
| 110 |
$json->type = 'OrderedCollectionPage'; |
| 111 |
$json->partOf = \get_rest_url( null, "/activitypub/1.0/users/$user_id/inbox" ); // phpcs:ignore |
| 112 |
|
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$json->totalItems = 0; // phpcs:ignore |
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|
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$json->orderedItems = array(); // phpcs:ignore |
| 116 |
|
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$json->first = $json->partOf; // phpcs:ignore |
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|
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// filter output |
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$json = \apply_filters( 'activitypub_inbox_array', $json ); |
| 121 |
|
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/* |
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* Action triggerd after the ActivityPub profile has been created and sent to the client |
| 124 |
*/ |
| 125 |
\do_action( 'activitypub_inbox_post' ); |
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|
| 127 |
$response = new \WP_REST_Response( $json, 200 ); |
| 128 |
|
| 129 |
$response->header( 'Content-Type', 'application/activity+json' ); |
| 130 |
|
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return $response; |
| 132 |
} |
| 133 |
|
| 134 |
/** |
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* Handles user-inbox requests |
| 136 |
* |
| 137 |
* @param WP_REST_Request $request |
| 138 |
* |
| 139 |
* @return WP_REST_Response |
| 140 |
*/ |
| 141 |
public static function user_inbox_post( $request ) { |
| 142 |
$user_id = $request->get_param( 'user_id' ); |
| 143 |
|
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$data = $request->get_params(); |
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$type = $request->get_param( 'type' ); |
| 146 |
$type = \strtolower( $type ); |
| 147 |
|
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\do_action( 'activitypub_inbox', $data, $user_id, $type ); |
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\do_action( "activitypub_inbox_{$type}", $data, $user_id ); |
| 150 |
|
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return new \WP_REST_Response( array(), 202 ); |
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} |
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|
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/** |
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* The shared inbox |
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* |
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* @param WP_REST_Request $request |
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* |
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* @return WP_REST_Response |
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*/ |
| 161 |
public static function shared_inbox_post( $request ) { |
| 162 |
$data = $request->get_params(); |
| 163 |
$type = $request->get_param( 'type' ); |
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$users = self::extract_recipients( $data ); |
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|
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if ( ! $users ) { |
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return new \WP_Error( |
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'rest_invalid_param', |
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\__( 'No recipients found', 'activitypub' ), |
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array( |
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'status' => 404, |
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'params' => array( |
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'to' => \__( 'Please check/validate "to" field', 'activitypub' ), |
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'bto' => \__( 'Please check/validate "bto" field', 'activitypub' ), |
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'cc' => \__( 'Please check/validate "cc" field', 'activitypub' ), |
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'bcc' => \__( 'Please check/validate "bcc" field', 'activitypub' ), |
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'audience' => \__( 'Please check/validate "audience" field', '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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foreach ( $users as $user ) { |
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$type = \strtolower( $type ); |
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|
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\do_action( 'activitypub_inbox', $data, $user->ID, $type ); |
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\do_action( "activitypub_inbox_{$type}", $data, $user->ID ); |
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} |
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|
| 190 |
return new \WP_REST_Response( array(), 202 ); |
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} |
| 192 |
|
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/** |
| 194 |
* The supported parameters |
| 195 |
* |
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* @return array list of parameters |
| 197 |
*/ |
| 198 |
public static function user_inbox_request_parameters() { |
| 199 |
$params = array(); |
| 200 |
|
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$params['page'] = array( |
| 202 |
'type' => 'integer', |
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); |
| 204 |
|
| 205 |
$params['user_id'] = array( |
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'required' => true, |
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'type' => 'integer', |
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); |
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|
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$params['id'] = array( |
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'required' => true, |
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'sanitize_callback' => 'esc_url_raw', |
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); |
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|
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$params['actor'] = array( |
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'required' => true, |
| 217 |
'sanitize_callback' => function( $param, $request, $key ) { |
| 218 |
if ( ! \is_string( $param ) ) { |
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$param = $param['id']; |
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} |
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return \esc_url_raw( $param ); |
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}, |
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); |
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|
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$params['type'] = array( |
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'required' => true, |
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//'type' => 'enum', |
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//'enum' => array( 'Create' ), |
| 229 |
//'sanitize_callback' => function( $param, $request, $key ) { |
| 230 |
// return \strtolower( $param ); |
| 231 |
//}, |
| 232 |
); |
| 233 |
|
| 234 |
$params['object'] = array( |
| 235 |
'required' => true, |
| 236 |
); |
| 237 |
|
| 238 |
return $params; |
| 239 |
} |
| 240 |
|
| 241 |
/** |
| 242 |
* The supported parameters |
| 243 |
* |
| 244 |
* @return array list of parameters |
| 245 |
*/ |
| 246 |
public static function shared_inbox_request_parameters() { |
| 247 |
$params = array(); |
| 248 |
|
| 249 |
$params['page'] = array( |
| 250 |
'type' => 'integer', |
| 251 |
); |
| 252 |
|
| 253 |
$params['id'] = array( |
| 254 |
'required' => true, |
| 255 |
'type' => 'string', |
| 256 |
'sanitize_callback' => 'esc_url_raw', |
| 257 |
); |
| 258 |
|
| 259 |
$params['actor'] = array( |
| 260 |
'required' => true, |
| 261 |
//'type' => array( 'object', 'string' ), |
| 262 |
'sanitize_callback' => function( $param, $request, $key ) { |
| 263 |
if ( ! \is_string( $param ) ) { |
| 264 |
$param = $param['id']; |
| 265 |
} |
| 266 |
return \esc_url_raw( $param ); |
| 267 |
}, |
| 268 |
); |
| 269 |
|
| 270 |
$params['type'] = array( |
| 271 |
'required' => true, |
| 272 |
//'type' => 'enum', |
| 273 |
//'enum' => array( 'Create' ), |
| 274 |
//'sanitize_callback' => function( $param, $request, $key ) { |
| 275 |
// return \strtolower( $param ); |
| 276 |
//}, |
| 277 |
); |
| 278 |
|
| 279 |
$params['object'] = array( |
| 280 |
'required' => true, |
| 281 |
//'type' => 'object', |
| 282 |
); |
| 283 |
|
| 284 |
$params['to'] = array( |
| 285 |
'required' => false, |
| 286 |
'sanitize_callback' => function( $param, $request, $key ) { |
| 287 |
if ( \is_string( $param ) ) { |
| 288 |
$param = array( $param ); |
| 289 |
} |
| 290 |
|
| 291 |
return $param; |
| 292 |
}, |
| 293 |
); |
| 294 |
|
| 295 |
$params['cc'] = array( |
| 296 |
'sanitize_callback' => function( $param, $request, $key ) { |
| 297 |
if ( \is_string( $param ) ) { |
| 298 |
$param = array( $param ); |
| 299 |
} |
| 300 |
|
| 301 |
return $param; |
| 302 |
}, |
| 303 |
); |
| 304 |
|
| 305 |
$params['bcc'] = array( |
| 306 |
'sanitize_callback' => function( $param, $request, $key ) { |
| 307 |
if ( \is_string( $param ) ) { |
| 308 |
$param = array( $param ); |
| 309 |
} |
| 310 |
|
| 311 |
return $param; |
| 312 |
}, |
| 313 |
); |
| 314 |
|
| 315 |
return $params; |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Handles "Follow" requests |
| 320 |
* |
| 321 |
* @param array $object The activity-object |
| 322 |
* @param int $user_id The id of the local blog-user |
| 323 |
*/ |
| 324 |
public static function handle_follow( $object, $user_id ) { |
| 325 |
// save follower |
| 326 |
\Activitypub\Peer\Followers::add_follower( $object['actor'], $user_id ); |
| 327 |
|
| 328 |
// get inbox |
| 329 |
$inbox = \Activitypub\get_inbox_by_actor( $object['actor'] ); |
| 330 |
|
| 331 |
// send "Accept" activity |
| 332 |
$activity = new \Activitypub\Model\Activity( 'Accept', \Activitypub\Model\Activity::TYPE_SIMPLE ); |
| 333 |
$activity->set_object( $object ); |
| 334 |
$activity->set_actor( \get_author_posts_url( $user_id ) ); |
| 335 |
$activity->set_to( $object['actor'] ); |
| 336 |
$activity->set_id( \get_author_posts_url( $user_id ) . '#follow-' . \preg_replace( '~^https?://~', '', $object['actor'] ) ); |
| 337 |
|
| 338 |
$activity = $activity->to_simple_json(); |
| 339 |
|
| 340 |
$response = \Activitypub\safe_remote_post( $inbox, $activity, $user_id ); |
| 341 |
} |
| 342 |
|
| 343 |
/** |
| 344 |
* Handles "Unfollow" requests |
| 345 |
* |
| 346 |
* @param array $object The activity-object |
| 347 |
* @param int $user_id The id of the local blog-user |
| 348 |
*/ |
| 349 |
public static function handle_unfollow( $object, $user_id ) { |
| 350 |
if ( isset( $object['object'] ) && isset( $object['object']['type'] ) && 'Follow' === $object['object']['type'] ) { |
| 351 |
\Activitypub\Peer\Followers::remove_follower( $object['actor'], $user_id ); |
| 352 |
} |
| 353 |
} |
| 354 |
|
| 355 |
/** |
| 356 |
* Handles "Reaction" requests |
| 357 |
* |
| 358 |
* @param array $object The activity-object |
| 359 |
* @param int $user_id The id of the local blog-user |
| 360 |
*/ |
| 361 |
public static function handle_reaction( $object, $user_id ) { |
| 362 |
$meta = \Activitypub\get_remote_metadata_by_actor( $object['actor'] ); |
| 363 |
|
| 364 |
$comment_post_id = \url_to_postid( $object['object'] ); |
| 365 |
|
| 366 |
// save only replys and reactions |
| 367 |
if ( ! $comment_post_id ) { |
| 368 |
return false; |
| 369 |
} |
| 370 |
|
| 371 |
$commentdata = array( |
| 372 |
'comment_post_ID' => $comment_post_id, |
| 373 |
'comment_author' => \esc_attr( $meta['name'] ), |
| 374 |
'comment_author_email' => '', |
| 375 |
'comment_author_url' => \esc_url_raw( $object['actor'] ), |
| 376 |
'comment_content' => \esc_url_raw( $object['actor'] ), |
| 377 |
'comment_type' => \esc_attr( \strtolower( $object['type'] ) ), |
| 378 |
'comment_parent' => 0, |
| 379 |
'comment_meta' => array( |
| 380 |
'source_url' => \esc_url_raw( $object['id'] ), |
| 381 |
'avatar_url' => \esc_url_raw( $meta['icon']['url'] ), |
| 382 |
'protocol' => 'activitypub', |
| 383 |
), |
| 384 |
); |
| 385 |
|
| 386 |
// disable flood control |
| 387 |
\remove_action( 'check_comment_flood', 'check_comment_flood_db', 10 ); |
| 388 |
|
| 389 |
// do not require email for AP entries |
| 390 |
\add_filter( 'pre_option_require_name_email', '__return_false' ); |
| 391 |
|
| 392 |
$state = \wp_new_comment( $commentdata, true ); |
| 393 |
|
| 394 |
\remove_filter( 'pre_option_require_name_email', '__return_false' ); |
| 395 |
|
| 396 |
// re-add flood control |
| 397 |
\add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 ); |
| 398 |
} |
| 399 |
|
| 400 |
/** |
| 401 |
* Handles "Create" requests |
| 402 |
* |
| 403 |
* @param array $object The activity-object |
| 404 |
* @param int $user_id The id of the local blog-user |
| 405 |
*/ |
| 406 |
public static function handle_create( $object, $user_id ) { |
| 407 |
$meta = \Activitypub\get_remote_metadata_by_actor( $object['actor'] ); |
| 408 |
|
| 409 |
if ( ! isset( $object['object']['inReplyTo'] ) ) { |
| 410 |
return; |
| 411 |
} |
| 412 |
|
| 413 |
$comment_post_id = \url_to_postid( $object['object']['inReplyTo'] ); |
| 414 |
|
| 415 |
// save only replys and reactions |
| 416 |
if ( ! $comment_post_id ) { |
| 417 |
return false; |
| 418 |
} |
| 419 |
|
| 420 |
$commentdata = array( |
| 421 |
'comment_post_ID' => $comment_post_id, |
| 422 |
'comment_author' => \esc_attr( $meta['name'] ), |
| 423 |
'comment_author_url' => \esc_url_raw( $object['actor'] ), |
| 424 |
'comment_content' => \wp_filter_kses( $object['object']['content'] ), |
| 425 |
'comment_type' => '', |
| 426 |
'comment_author_email' => '', |
| 427 |
'comment_parent' => 0, |
| 428 |
'comment_meta' => array( |
| 429 |
'source_url' => \esc_url_raw( $object['object']['url'] ), |
| 430 |
'avatar_url' => \esc_url_raw( $meta['icon']['url'] ), |
| 431 |
'protocol' => 'activitypub', |
| 432 |
), |
| 433 |
); |
| 434 |
|
| 435 |
// disable flood control |
| 436 |
\remove_action( 'check_comment_flood', 'check_comment_flood_db', 10 ); |
| 437 |
|
| 438 |
// do not require email for AP entries |
| 439 |
\add_filter( 'pre_option_require_name_email', '__return_false' ); |
| 440 |
|
| 441 |
$state = \wp_new_comment( $commentdata, true ); |
| 442 |
|
| 443 |
\remove_filter( 'pre_option_require_name_email', '__return_false' ); |
| 444 |
|
| 445 |
// re-add flood control |
| 446 |
\add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 ); |
| 447 |
} |
| 448 |
|
| 449 |
public static function extract_recipients( $data ) { |
| 450 |
$recipients = array(); |
| 451 |
$users = array(); |
| 452 |
|
| 453 |
foreach ( array( 'to', 'bto', 'cc', 'bcc', 'audience' ) as $i ) { |
| 454 |
if ( array_key_exists( $i, $data ) ) { |
| 455 |
$recipients = array_merge( $recipients, $data[ $i ] ); |
| 456 |
} |
| 457 |
|
| 458 |
if ( array_key_exists( $i, $data['object'] ) ) { |
| 459 |
$recipients = array_merge( $recipients, $data[ $i ] ); |
| 460 |
} |
| 461 |
} |
| 462 |
|
| 463 |
$recipients = array_unique( $recipients ); |
| 464 |
|
| 465 |
foreach ( $recipients as $recipient ) { |
| 466 |
$user_id = \Activitypub\url_to_authorid( $recipient ); |
| 467 |
|
| 468 |
$user = get_user_by( 'id', $user_id ); |
| 469 |
|
| 470 |
if ( $user ) { |
| 471 |
$users[] = $user; |
| 472 |
} |
| 473 |
} |
| 474 |
|
| 475 |
return $users; |
| 476 |
} |
| 477 |
} |
| 478 |
|
