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updated plugin ActivityPub version 8.3.0

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This commit is contained in:
KawaiiPunk
2026-06-03 21:28:46 +00:00
committed by Gitium
parent a4b78ec277
commit 6fe182458a
340 changed files with 43232 additions and 7568 deletions
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349
wp-content/plugins/activitypub/includes/rest/class-inbox-controller.php
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@ -9,10 +9,19 @@ namespace Activitypub\Rest;
use Activitypub\Activity\Activity;
use Activitypub\Collection\Actors;
use Activitypub\Debug;
use Activitypub\Collection\Following;
use Activitypub\Collection\Inbox;
use Activitypub\Collection\Remote_Actors;
use Activitypub\Http;
use Activitypub\Moderation;
use function Activitypub\is_same_domain;
use function Activitypub\camel_to_snake_case;
use function Activitypub\extract_recipients_from_activity;
use function Activitypub\is_activity_public;
use function Activitypub\is_collection;
use function Activitypub\is_same_domain;
use function Activitypub\object_to_uri;
use function Activitypub\user_can_activitypub;
/**
* Inbox_Controller class.
@ -22,6 +31,9 @@ use function Activitypub\extract_recipients_from_activity;
* @see https://www.w3.org/TR/activitypub/#inbox
*/
class Inbox_Controller extends \WP_REST_Controller {
use Verification;
use Language_Map;
/**
* The namespace of this controller's route.
*
@ -47,7 +59,7 @@ class Inbox_Controller extends \WP_REST_Controller {
array(
'methods' => \WP_REST_Server::CREATABLE,
'callback' => array( $this, 'create_item' ),
'permission_callback' => array( 'Activitypub\Rest\Server', 'verify_signature' ),
'permission_callback' => array( $this, 'verify_signature' ),
'args' => array(
'id' => array(
'description' => 'The unique identifier for the activity.',
@ -62,21 +74,27 @@ class Inbox_Controller extends \WP_REST_Controller {
'sanitize_callback' => '\Activitypub\object_to_uri',
),
'type' => array(
'description' => 'The type of the activity.',
'type' => 'string',
'required' => true,
'description' => 'The type of the activity.',
'type' => 'string',
'required' => true,
'sanitize_callback' => 'sanitize_html_class',
'validate_callback' => static function ( $param ) {
// Reject values that sanitize to empty so dynamic hook names always have a suffix.
return '' !== \sanitize_html_class( (string) $param );
},
),
'object' => array(
'description' => 'The object of the activity.',
'required' => true,
'validate_callback' => function ( $param, $request, $key ) {
'sanitize_callback' => array( $this, 'localize_language_maps' ),
'validate_callback' => static function ( $param, $request, $key ) {
/**
* Filter the ActivityPub object validation.
*
* @param bool $validate The validation result.
* @param array $param The object data.
* @param object $request The request object.
* @param string $key The key.
* @param bool $validate The validation result.
* @param array $param The object data.
* @param \WP_REST_Request $request The request object.
* @param string $key The key.
*/
return \apply_filters( 'activitypub_validate_object', true, $param, $request, $key );
},
@ -85,7 +103,7 @@ class Inbox_Controller extends \WP_REST_Controller {
'description' => 'The primary recipients of the activity.',
'type' => array( 'string', 'array' ),
'required' => false,
'sanitize_callback' => function ( $param ) {
'sanitize_callback' => static function ( $param ) {
if ( \is_string( $param ) ) {
$param = array( $param );
}
@ -96,7 +114,7 @@ class Inbox_Controller extends \WP_REST_Controller {
'cc' => array(
'description' => 'The secondary recipients of the activity.',
'type' => array( 'string', 'array' ),
'sanitize_callback' => function ( $param ) {
'sanitize_callback' => static function ( $param ) {
if ( \is_string( $param ) ) {
$param = array( $param );
}
@ -107,7 +125,7 @@ class Inbox_Controller extends \WP_REST_Controller {
'bcc' => array(
'description' => 'The private recipients of the activity.',
'type' => array( 'string', 'array' ),
'sanitize_callback' => function ( $param ) {
'sanitize_callback' => static function ( $param ) {
if ( \is_string( $param ) ) {
$param = array( $param );
}
@ -130,49 +148,149 @@ class Inbox_Controller extends \WP_REST_Controller {
* @return \WP_REST_Response|\WP_Error Response object or WP_Error.
*/
public function create_item( $request ) {
$data = $request->get_json_params();
$data = $request->get_json_params();
$type = camel_to_snake_case( $request->get_param( 'type' ) );
/* @var Activity $activity Activity object.*/
$activity = Activity::init_from_array( $data );
$type = \strtolower( $request->get_param( 'type' ) );
// phpcs:ignore WordPress.Security.ValidatedSanitizedInput
if ( \wp_check_comment_disallowed_list( $activity->to_json( false ), '', '', '', $_SERVER['REMOTE_ADDR'], $_SERVER['HTTP_USER_AGENT'] ?? '' ) ) {
Debug::write_log( 'Blocked activity from: ' . $activity->get_actor() );
if ( Moderation::activity_is_blocked( $activity ) ) {
/**
* ActivityPub inbox disallowed activity.
*
* @param array $data The data array.
* @param null $user_id The user ID.
* @param string $type The type of the activity.
* @param Activity|\WP_Error $activity The Activity object.
*/
\do_action( 'activitypub_rest_inbox_disallowed', $data, null, $type, $activity );
} else {
$recipients = extract_recipients_from_activity( $data );
$recipients = $this->get_local_recipients( $data );
foreach ( $recipients as $recipient ) {
if ( ! is_same_domain( $recipient ) ) {
continue;
// Filter out blocked recipients.
$allowed_recipients = array();
foreach ( $recipients as $user_id ) {
if ( Moderation::activity_is_blocked_for_user( $activity, $user_id ) ) {
/**
* ActivityPub inbox disallowed activity for specific user.
*
* @param array $data The data array.
* @param int $user_id The user ID.
* @param string $type The type of the activity.
* @param Activity|\WP_Error $activity The Activity object.
*/
\do_action( 'activitypub_rest_inbox_disallowed', $data, $user_id, $type, $activity );
} else {
$allowed_recipients[] = $user_id;
/**
* ActivityPub inbox action.
*
* @deprecated 7.6.0 Support activitypub_inbox_shared instead to avoid duplicate processing.
*
* @param array $data The data array.
* @param int $user_id The user ID.
* @param string $type The type of the activity.
* @param Activity|\WP_Error $activity The Activity object.
* @param string $context The context of the request (shared_inbox when called from shared inbox endpoint).
*/
\do_action( 'activitypub_inbox', $data, $user_id, $type, $activity, Inbox::CONTEXT_SHARED_INBOX );
/**
* ActivityPub inbox action for specific activity types.
*
* @deprecated 7.6.0 Support activitypub_inbox_shared_{type} instead to avoid duplicate processing.
*
* @param array $data The data array.
* @param int $user_id The user ID.
* @param Activity|\WP_Error $activity The Activity object.
* @param string $context The context of the request (shared_inbox when called from shared inbox endpoint).
*/
\do_action( 'activitypub_inbox_' . $type, $data, $user_id, $activity, Inbox::CONTEXT_SHARED_INBOX );
}
}
$actor = Actors::get_by_various( $recipient );
/**
* ActivityPub shared inbox action.
*
* This hook fires once per activity with all recipients.
* Preferred for new implementations to avoid duplication.
*
* @since 7.6.0
*
* @param array $data The data array.
* @param array $recipients Array of user IDs.
* @param string $type The type of the activity.
* @param Activity|\WP_Error $activity The Activity object.
* @param string $context The context of the request.
*/
\do_action( 'activitypub_inbox_shared', $data, $allowed_recipients, $type, $activity, Inbox::CONTEXT_SHARED_INBOX );
if ( ! $actor || \is_wp_error( $actor ) ) {
continue;
}
/**
* ActivityPub shared inbox action for specific activity types.
*
* This hook fires once per activity with all recipients.
* Preferred for new implementations to avoid duplication.
*
* @since 7.6.0
*
* @param array $data The data array.
* @param array $recipients Array of user IDs.
* @param Activity|\WP_Error $activity The Activity object.
* @param string $context The context of the request.
*/
\do_action( 'activitypub_inbox_shared_' . $type, $data, $allowed_recipients, $activity, Inbox::CONTEXT_SHARED_INBOX );
/**
* Filter to skip inbox storage.
*
* Skip inbox storage for debugging purposes or to reduce load for
* certain Activity-Types, like "Delete".
*
* @param bool $skip Whether to skip inbox storage.
* @param array $data The activity data array.
*
* @return bool Whether to skip inbox storage.
*/
$skip = \apply_filters( 'activitypub_skip_inbox_storage', false, $data );
if ( ! $skip ) {
$result = Inbox::add( $activity, $allowed_recipients );
/**
* ActivityPub inbox action.
* Fires after an ActivityPub Inbox activity has been handled.
*
* @param array $data The data array.
* @param int $user_id The user ID.
* @param array $user_ids The user IDs.
* @param string $type The type of the activity.
* @param Activity|\WP_Error $activity The Activity object.
* @param \WP_Error|int $result The ID of the inbox item that was created, or WP_Error if failed.
* @param string $context The context of the request ('inbox' or 'shared_inbox').
*/
\do_action( 'activitypub_inbox', $data, $actor->get__id(), $type, $activity );
\do_action( 'activitypub_handled_inbox', $data, $allowed_recipients, $type, $activity, $result, Inbox::CONTEXT_SHARED_INBOX );
/**
* ActivityPub inbox action for specific activity types.
* Fires after an ActivityPub Inbox activity has been handled.
*
* @param array $data The data array.
* @param int $user_id The user ID.
* @param array $user_ids The user IDs.
* @param Activity|\WP_Error $activity The Activity object.
* @param \WP_Error|int $result The ID of the inbox item that was created, or WP_Error if failed.
* @param string $context The context of the request ('inbox' or 'shared_inbox').
*/
\do_action( 'activitypub_inbox_' . $type, $data, $actor->get__id(), $activity );
\do_action( 'activitypub_handled_inbox_' . $type, $data, $allowed_recipients, $activity, $result, Inbox::CONTEXT_SHARED_INBOX );
}
}
$response = \rest_ensure_response( array() );
$response = \rest_ensure_response(
array(
'type' => 'https://w3id.org/fep/c180#approval-required',
'title' => 'Approval Required',
'status' => '202',
'detail' => 'This activity requires approval before it can be processed.',
)
);
$response->set_status( 202 );
$response->header( 'Content-Type', 'application/activity+json; charset=' . \get_option( 'blog_charset' ) );
@ -252,4 +370,169 @@ class Inbox_Controller extends \WP_REST_Controller {
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Extract recipients from the given Activity.
*
* @param array $activity The activity data.
*
* @return array An array of user IDs who are the recipients of the activity.
*/
private function get_local_recipients( $activity ) {
$user_ids = array();
$remote_fetches = 0;
$cap_notified = false;
/**
* Filters the maximum number of remote recipient URLs that can be
* fetched per incoming activity.
*
* @since 8.2.1
*
* @param int $max_remote_fetches Maximum number of remote fetches. Default 10.
*/
$max_remote_fetches = (int) \apply_filters( 'activitypub_max_remote_recipient_fetches', 10 );
// AS2 allows actor and followers to be either an IRI string or an inline object; normalize to a URI.
$actor_uri = ! empty( $activity['actor'] ) ? object_to_uri( $activity['actor'] ) : null;
$actor_followers_url = $this->get_cached_followers_url( $actor_uri );
if ( is_activity_public( $activity ) ) {
$user_ids = Following::get_follower_ids( $actor_uri );
}
$recipients = extract_recipients_from_activity( $activity );
/*
* Pre-compute which recipients are already known remote actors so the
* cached-actor short-circuit becomes an O(1) array lookup rather than
* one DB query per recipient. This bounds the DB cost of a flood of
* unknown recipient URIs to one batched SELECT (chunked) regardless
* of how many were sent.
*/
$candidate_uris = array();
foreach ( $recipients as $recipient ) {
if (
! \is_string( $recipient )
|| \in_array( $recipient, ACTIVITYPUB_PUBLIC_AUDIENCE_IDENTIFIERS, true )
|| is_same_domain( $recipient )
|| $recipient === $actor_followers_url
) {
continue;
}
$candidate_uris[] = $recipient;
}
$cached_uris = $candidate_uris ? Remote_Actors::get_existing_uris( $candidate_uris ) : array();
foreach ( $recipients as $recipient ) {
// Skip public audience identifiers - they're not actual recipients to fetch.
if ( \in_array( $recipient, ACTIVITYPUB_PUBLIC_AUDIENCE_IDENTIFIERS, true ) ) {
continue;
}
if ( ! is_same_domain( $recipient ) ) {
// Known followers collection: resolve from local DB, no fetch needed.
if ( $recipient === $actor_followers_url ) {
$user_ids = array_merge( $user_ids, Following::get_follower_ids( $actor_uri ) );
continue;
}
// Already cached as a remote actor: not a collection, so no local recipients to add.
if ( isset( $cached_uris[ $recipient ] ) ) {
continue;
}
// Unknown URL: cap remote fetches to prevent abuse via large audience/recipient fields.
if ( $remote_fetches >= $max_remote_fetches ) {
if ( ! $cap_notified ) {
$cap_notified = true;
/**
* Fires when an incoming activity hits the remote recipient fetch cap.
*
* Fires once per activity on the first recipient that exceeds the cap,
* not for each subsequent skipped recipient. Hook this to surface
* cap hits in your logging system of choice (Jetpack, Sentry, syslog, etc.).
*
* @since 8.2.1
*
* @param array $activity The incoming activity data.
* @param string $recipient The recipient URI that was skipped.
* @param int $cap The configured cap.
*/
\do_action( 'activitypub_remote_recipient_fetch_cap_reached', $activity, $recipient, $max_remote_fetches );
}
continue;
}
++$remote_fetches;
$collection = Http::get_remote_object( $recipient );
if ( \is_wp_error( $collection ) ) {
continue;
}
if ( is_collection( $collection ) ) {
$user_ids = array_merge( $user_ids, Following::get_follower_ids( $actor_uri ) );
continue;
}
}
$user_id = Actors::get_id_by_resource( $recipient );
if ( \is_wp_error( $user_id ) ) {
continue;
}
if ( ! user_can_activitypub( $user_id ) ) {
continue;
}
$user_ids[] = $user_id;
}
// Check for an Actor in the Object field.
if ( empty( $user_ids ) && ! empty( $activity['object'] ) ) {
$user_id = Actors::get_id_by_resource( $activity['object'] );
if ( ! \is_wp_error( $user_id ) && user_can_activitypub( $user_id ) ) {
$user_ids[] = $user_id;
}
}
return array_unique( array_map( 'intval', $user_ids ) );
}
/**
* Look up an actor's followers collection URL from the cached profile.
*
* Used to detect followers-addressed recipients without an outbound fetch.
*
* @param string|null $actor_uri Normalized actor URI.
*
* @return string|null The followers collection URL, or null if not cached/available.
*/
private function get_cached_followers_url( $actor_uri ) {
if ( empty( $actor_uri ) ) {
return null;
}
$actor_post = Remote_Actors::get_by_uri( $actor_uri );
if ( \is_wp_error( $actor_post ) ) {
return null;
}
// Match Remote_Actors::get_actor()'s storage fallback: legacy actor JSON lives in postmeta when post_content is empty.
$json = $actor_post->post_content;
if ( empty( $json ) ) {
$json = \get_post_meta( $actor_post->ID, '_activitypub_actor_json', true );
}
$actor_data = \json_decode( $json, true );
if ( empty( $actor_data['followers'] ) ) {
return null;
}
return object_to_uri( $actor_data['followers'] );
}
}