Event-Federation/wordpress-activitypub
Event-Federation/wordpress-activitypub
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Merge branch 'master' into signature_verification

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Matthias Pfefferle 2023-05-05 10:15:26 +02:00 committed by GitHub
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8
README.md
View file

@ -2,7 +2,7 @@
**Contributors:** [pfefferle](https://profiles.wordpress.org/pfefferle/), [mediaformat](https://profiles.wordpress.org/mediaformat/), [akirk](https://profiles.wordpress.org/akirk/), [automattic](https://profiles.wordpress.org/automattic/)
**Tags:** OStatus, fediverse, activitypub, activitystream
**Requires at least:** 4.7
**Tested up to:** 6.1
**Tested up to:** 6.2
**Stable tag:** 0.17.0
**Requires PHP:** 5.6
**License:** MIT
@ -111,7 +111,11 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
## Changelog ##
Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
Project maintained on GitHub at [automattic/wordpress-activitypub](https://github.com/automattic/wordpress-activitypub).
### Next ###
* Compatibility: indicate that the plugin is compatible and has been tested with the latest version of WordPress, 6.2.
### 0.17.0 ###

49
activitypub.php
View file

@ -23,13 +23,16 @@ function init() {
\defined( 'ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS' ) || \define( 'ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS', 3 );
\defined( 'ACTIVITYPUB_HASHTAGS_REGEXP' ) || \define( 'ACTIVITYPUB_HASHTAGS_REGEXP', '(?:(?<=\s)|(?<=<p>)|(?<=<br>)|^)#([A-Za-z0-9_]+)(?:(?=\s|[[:punct:]]|$))' );
\defined( 'ACTIVITYPUB_USERNAME_REGEXP' ) || \define( 'ACTIVITYPUB_USERNAME_REGEXP', '(?:([A-Za-z0-9_-]+)@((?:[A-Za-z0-9_-]+\.)+[A-Za-z]+))' );
\defined( 'ACTIVITYPUB_ALLOWED_HTML' ) || \define( 'ACTIVITYPUB_ALLOWED_HTML', '<strong><a><p><ul><ol><li><code><blockquote><pre><img>' );
\defined( 'ACTIVITYPUB_CUSTOM_POST_CONTENT' ) || \define( 'ACTIVITYPUB_CUSTOM_POST_CONTENT', "<p><strong>[ap_title]</strong></p>\n\n[ap_content]\n\n<p>[ap_hashtags]</p>\n\n<p>[ap_shortlink]</p>" );
\define( 'ACTIVITYPUB_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
\define( 'ACTIVITYPUB_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );
\define( 'ACTIVITYPUB_PLUGIN_FILE', plugin_dir_path( __FILE__ ) . '/' . basename( __FILE__ ) );
require_once \dirname( __FILE__ ) . '/includes/table/followers-list.php';
\define( 'ACTIVITYPUB_OBJECT', 'ACTIVITYPUB_OBJECT' );
require_once \dirname( __FILE__ ) . '/includes/table/class-followers.php';
require_once \dirname( __FILE__ ) . '/includes/class-http.php';
require_once \dirname( __FILE__ ) . '/includes/class-signature.php';
require_once \dirname( __FILE__ ) . '/includes/class-webfinger.php';
require_once \dirname( __FILE__ ) . '/includes/peer/class-followers.php';
@ -37,6 +40,10 @@ function init() {
require_once \dirname( __FILE__ ) . '/includes/model/class-activity.php';
require_once \dirname( __FILE__ ) . '/includes/model/class-post.php';
require_once \dirname( __FILE__ ) . '/includes/model/class-follower.php';
require_once \dirname( __FILE__ ) . '/includes/class-migration.php';
Migration::init();
require_once \dirname( __FILE__ ) . '/includes/class-activity-dispatcher.php';
Activity_Dispatcher::init();
@ -44,6 +51,9 @@ function init() {
require_once \dirname( __FILE__ ) . '/includes/class-activitypub.php';
Activitypub::init();
require_once \dirname( __FILE__ ) . '/includes/collection/class-followers.php';
Collection\Followers::init();
// Configure the REST API route
require_once \dirname( __FILE__ ) . '/includes/rest/class-outbox.php';
Rest\Outbox::init();
@ -142,3 +152,38 @@ function enable_buddypress_features() {
Integration\Buddypress::init();
}
add_action( 'bp_include', '\Activitypub\enable_buddypress_features' );
/**
* `get_plugin_data` wrapper
*
* @return array The plugin metadata array
*/
function get_plugin_meta( $default_headers = array() ) {
if ( ! $default_headers ) {
$default_headers = array(
'Name' => 'Plugin Name',
'PluginURI' => 'Plugin URI',
'Version' => 'Version',
'Description' => 'Description',
'Author' => 'Author',
'AuthorURI' => 'Author URI',
'TextDomain' => 'Text Domain',
'DomainPath' => 'Domain Path',
'Network' => 'Network',
'RequiresWP' => 'Requires at least',
'RequiresPHP' => 'Requires PHP',
'UpdateURI' => 'Update URI',
);
}
return \get_file_data( __FILE__, $default_headers, 'plugin' );
}
/**
* Plugin Version Number used for caching.
*/
function get_plugin_version() {
$meta = get_plugin_meta( array( 'Version' => 'Version' ) );
return $meta['Version'];
}

14
includes/class-activity-dispatcher.php
View file

@ -3,6 +3,7 @@ namespace Activitypub;
use Activitypub\Model\Post;
use Activitypub\Model\Activity;
use Activitypub\Collection\Followers;
/**
* ActivityPub Activity_Dispatcher Class
@ -60,17 +61,22 @@ class Activity_Dispatcher {
* @return void
*/
public static function send_activity( Post $activitypub_post, $activity_type ) {
// check if a migration is needed before sending new posts
\Activitypub\Migration::maybe_migrate();
// get latest version of post
$user_id = $activitypub_post->get_post_author();
$activitypub_activity = new Activity( $activity_type );
$activitypub_activity->from_post( $activitypub_post );
$inboxes = \Activitypub\get_follower_inboxes( $user_id, $activitypub_activity->get_cc() );
$follower_inboxes = Followers::get_inboxes( $user_id );
$mentioned_inboxes = Mention::get_inboxes( $activitypub_activity->get_cc() );
foreach ( $inboxes as $inbox => $cc ) {
$cc = array_values( array_unique( $cc ) );
$activitypub_activity->add_cc( $cc );
$inboxes = array_merge( $follower_inboxes, $mentioned_inboxes );
$inboxes = array_unique( $inboxes );
foreach ( $inboxes as $inbox ) {
$activity = $activitypub_activity->to_json();
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );

3
includes/class-activitypub.php
View file

@ -39,6 +39,9 @@ class Activitypub {
return $template;
}
// Ensure that edge caches know that this page can deliver both HTML and JSON.
header( 'Vary: Accept' );
// check if user can publish posts
if ( \is_author() && ! user_can( \get_the_author_meta( 'ID' ), 'publish_posts' ) ) {
return $template;

49
includes/class-admin.php
View file

@ -1,6 +1,8 @@
<?php
namespace Activitypub;
use Activitypub\Model\Post;
/**
* ActivityPub Admin Class
*
@ -13,7 +15,9 @@ class Admin {
public static function init() {
\add_action( 'admin_menu', array( self::class, 'admin_menu' ) );
\add_action( 'admin_init', array( self::class, 'register_settings' ) );
\add_action( 'show_user_profile', array( self::class, 'add_fediverse_profile' ) );
\add_action( 'admin_init', array( self::class, 'schedule_migration' ) );
\add_action( 'show_user_profile', array( self::class, 'add_profile' ) );
\add_action( 'personal_options_update', array( self::class, 'save_user_description' ) );
\add_action( 'admin_enqueue_scripts', array( self::class, 'enqueue_scripts' ) );
}
@ -31,7 +35,7 @@ class Admin {
\add_action( 'load-' . $settings_page, array( self::class, 'add_settings_help_tab' ) );
$followers_list_page = \add_users_page( \__( 'Followers', 'activitypub' ), \__( 'Followers (Fediverse)', 'activitypub' ), 'read', 'activitypub-followers-list', array( self::class, 'followers_list_page' ) );
$followers_list_page = \add_users_page( \__( 'Followers', 'activitypub' ), \__( 'Followers', 'activitypub' ), 'read', 'activitypub-followers-list', array( self::class, 'followers_list_page' ) );
\add_action( 'load-' . $followers_list_page, array( self::class, 'add_followers_list_help_tab' ) );
}
@ -50,9 +54,7 @@ class Admin {
switch ( $tab ) {
case 'settings':
\Activitypub\Model\Post::upgrade_post_content_template();
\load_template( \dirname( __FILE__ ) . '/../templates/settings.php' );
\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/settings.php' );
break;
case 'welcome':
default:
@ -60,7 +62,7 @@ class Admin {
add_thickbox();
wp_enqueue_script( 'updates' );
\load_template( \dirname( __FILE__ ) . '/../templates/welcome.php' );
\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/welcome.php' );
break;
}
}
@ -69,7 +71,7 @@ class Admin {
* Load user settings page
*/
public static function followers_list_page() {
\load_template( \dirname( __FILE__ ) . '/../templates/followers-list.php' );
\load_template( ACTIVITYPUB_PLUGIN_DIR . 'templates/followers-list.php' );
}
/**
@ -153,19 +155,40 @@ class Admin {
);
}
public static function schedule_migration() {
if ( ! \wp_next_scheduled( 'activitypub_schedule_migration' ) ) {
\wp_schedule_single_event( \time(), 'activitypub_schedule_migration' );
}
}
public static function add_settings_help_tab() {
require_once \dirname( __FILE__ ) . '/help.php';
require_once ACTIVITYPUB_PLUGIN_DIR . 'includes/help.php';
}
public static function add_followers_list_help_tab() {
// todo
}
public static function add_fediverse_profile( $user ) {
?>
<h2 id="activitypub"><?php \esc_html_e( 'ActivityPub', 'activitypub' ); ?></h2>
<?php
\Activitypub\get_identifier_settings( $user->ID );
public static function add_profile( $user ) {
$description = get_user_meta( $user->ID, 'activitypub_user_description', true );
\load_template(
ACTIVITYPUB_PLUGIN_DIR . 'templates/user-settings.php',
true,
array(
'description' => $description,
)
);
}
public static function save_user_description( $user_id ) {
if ( isset( $_REQUEST['_apnonce'] ) && ! wp_verify_nonce( $_REQUEST['_apnonce'], 'activitypub-user-description' ) ) {
return false;
}
if ( ! current_user_can( 'edit_user', $user_id ) ) {
return false;
}
update_user_meta( $user_id, 'activitypub_user_description', sanitize_text_field( $_POST['activitypub-user-description'] ) );
}
public static function enqueue_scripts( $hook_suffix ) {

93
includes/class-http.php Normal file
View file

@ -0,0 +1,93 @@
<?php
namespace Activitypub;
use WP_Error;
/**
* ActivityPub HTTP Class
*
* @author Matthias Pfefferle
*/
class Http {
/**
* Send a POST Request with the needed HTTP Headers
*
* @param string $url The URL endpoint
* @param string $body The Post Body
* @param int $user_id The WordPress User-ID
*
* @return array|WP_Error The POST Response or an WP_ERROR
*/
public static function post( $url, $body, $user_id ) {
$date = \gmdate( 'D, d M Y H:i:s T' );
$digest = Signature::generate_digest( $body );
$signature = Signature::generate_signature( $user_id, 'post', $url, $date, $digest );
$wp_version = \get_bloginfo( 'version' );
$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
$args = array(
'timeout' => 100,
'limit_response_size' => 1048576,
'redirection' => 3,
'user-agent' => "$user_agent; ActivityPub",
'headers' => array(
'Accept' => 'application/activity+json',
'Content-Type' => 'application/activity+json',
'Digest' => "SHA-256=$digest",
'Signature' => $signature,
'Date' => $date,
),
'body' => $body,
);
$response = \wp_safe_remote_post( $url, $args );
$code = \wp_remote_retrieve_response_code( $response );
if ( 400 <= $code && 500 >= $code ) {
$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ) );
}
\do_action( 'activitypub_safe_remote_post_response', $response, $url, $body, $user_id );
return $response;
}
/**
* Send a GET Request with the needed HTTP Headers
*
* @param string $url The URL endpoint
* @param int $user_id The WordPress User-ID
*
* @return array|WP_Error The GET Response or an WP_ERROR
*/
public static function get( $url, $user_id ) {
$date = \gmdate( 'D, d M Y H:i:s T' );
$signature = Signature::generate_signature( $user_id, 'get', $url, $date );
$wp_version = \get_bloginfo( 'version' );
$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
$args = array(
'timeout' => apply_filters( 'activitypub_remote_get_timeout', 100 ),
'limit_response_size' => 1048576,
'redirection' => 3,
'user-agent' => "$user_agent; ActivityPub",
'headers' => array(
'Accept' => 'application/activity+json',
'Content-Type' => 'application/activity+json',
'Signature' => $signature,
'Date' => $date,
),
);
$response = \wp_safe_remote_get( $url, $args );
$code = \wp_remote_retrieve_response_code( $response );
if ( 400 <= $code && 500 >= $code ) {
$response = new WP_Error( $code, __( 'Failed HTTP Request', 'activitypub' ) );
}
\do_action( 'activitypub_safe_remote_get_response', $response, $url, $user_id );
return $response;
}
}

60
includes/class-mention.php
View file

@ -1,6 +1,8 @@
<?php
namespace Activitypub;
use WP_Error;
/**
* ActivityPub Mention Class
*
@ -46,6 +48,12 @@ class Mention {
$the_content
);
$the_content = preg_replace_callback(
'#<img.*?[^>]+>#i',
$protect,
$the_content
);
$the_content = \preg_replace_callback( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/', array( self::class, 'replace_with_links' ), $the_content );
$the_content = str_replace( array_reverse( array_keys( $protected_tags ) ), array_reverse( array_values( $protected_tags ) ), $the_content );
@ -57,10 +65,11 @@ class Mention {
* A callback for preg_replace to build the user links
*
* @param array $result the preg_match results
*
* @return string the final string
*/
public static function replace_with_links( $result ) {
$metadata = \ActivityPub\get_remote_metadata_by_actor( $result[0] );
$metadata = get_remote_metadata_by_actor( $result[0] );
if ( ! is_wp_error( $metadata ) && ! empty( $metadata['url'] ) ) {
$username = ltrim( $result[0], '@' );
if ( ! empty( $metadata['name'] ) ) {
@ -76,17 +85,64 @@ class Mention {
return $result[0];
}
/**
* Get the Inboxes for the mentioned Actors
*
* @param array $mentioned The list of Actors that were mentioned
*
* @return array The list of Inboxes
*/
public static function get_inboxes( $mentioned ) {
$inboxes = array();
foreach ( $mentioned as $actor ) {
$inbox = self::get_inbox_by_mentioned_actor( $actor );
if ( ! is_wp_error( $inbox ) && $inbox ) {
$inboxes[] = $inbox;
}
}
return $inboxes;
}
/**
* Get the inbox from the Remote-Profile of a mentioned Actor
*
* @param string $actor The Actor-URL
*
* @return string The Inbox-URL
*/
public static function get_inbox_by_mentioned_actor( $actor ) {
$metadata = get_remote_metadata_by_actor( $actor, true );
if ( \is_wp_error( $metadata ) ) {
return $metadata;
}
if ( isset( $metadata['endpoints'] ) && isset( $metadata['endpoints']['sharedInbox'] ) ) {
return $metadata['endpoints']['sharedInbox'];
}
if ( \array_key_exists( 'inbox', $metadata ) ) {
return $metadata['inbox'];
}
return new WP_Error( 'activitypub_no_inbox', \__( 'No "Inbox" found', 'activitypub' ), $metadata );
}
/**
* Extract the mentions from the post_content.
*
* @param array $mentions The already found mentions.
* @param string $post_content The post content.
*
* @return mixed The discovered mentions.
*/
public static function extract_mentions( $mentions, $post_content ) {
\preg_match_all( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/i', $post_content, $matches );
foreach ( $matches[0] as $match ) {
$link = \Activitypub\Webfinger::resolve( $match );
$link = Webfinger::resolve( $match );
if ( ! is_wp_error( $link ) ) {
$mentions[ $match ] = $link;
}

119
includes/class-migration.php Normal file
View file

@ -0,0 +1,119 @@
<?php
namespace Activitypub;
use Acctivitypub\Model\Follower;
class Migration {
public static function init() {
\add_action( 'activitypub_schedule_migration', array( self::class, 'maybe_migrate' ) );
}
public static function get_target_version() {
return get_plugin_version();
}
public static function get_version() {
return get_option( 'activitypub_db_version', 0 );
}
/**
* Whether the database structure is up to date.
*
* @return bool
*/
public static function is_latest_version() {
return (bool) version_compare(
self::get_version(),
self::get_target_version(),
'=='
);
}
/**
* Updates the database structure if necessary.
*/
public static function maybe_migrate() {
if ( self::is_latest_version() ) {
return;
}
$version_from_db = self::get_version();
if ( version_compare( $version_from_db, '0.16.0', '<' ) ) {
self::migrate_from_0_16();
}
if ( version_compare( $version_from_db, '0.17.0', '<' ) ) {
self::migrate_from_0_17();
}
update_option( 'activitypub_db_version', self::get_target_version() );
}
/**
* Updates the DB-schema of the followers-list
*
* @return void
*/
private static function migrate_from_0_17() {
foreach ( get_users( array( 'fields' => 'ID' ) ) as $user_id ) {
$followers = get_user_meta( $user_id, 'activitypub_followers', true );
if ( $followers ) {
foreach ( $followers as $follower ) {
$meta = get_remote_metadata_by_actor( $actor );
$follower = new Follower( $actor );
if ( is_tombstone( $meta ) ) {
continue;
} if ( empty( $meta ) || ! is_array( $meta ) || is_wp_error( $meta ) ) {
$follower->set_error( $meta );
} else {
$follower->from_meta( $meta );
}
$follower->upsert();
$result = wp_set_object_terms( $user_id, $follower->get_actor(), self::TAXONOMY, true );
}
}
}
}
/**
* Updates the custom template to use shortcodes instead of the deprecated templates.
*
* @return void
*/
private static function migrate_from_0_16() {
// Get the custom template.
$old_content = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
// If the old content exists but is a blank string, we're going to need a flag to updated it even
// after setting it to the default contents.
$need_update = false;
// If the old contents is blank, use the defaults.
if ( '' === $old_content ) {
$old_content = ACTIVITYPUB_CUSTOM_POST_CONTENT;
$need_update = true;
}
// Set the new content to be the old content.
$content = $old_content;
// Convert old templates to shortcodes.
$content = \str_replace( '%title%', '[ap_title]', $content );
$content = \str_replace( '%excerpt%', '[ap_excerpt]', $content );
$content = \str_replace( '%content%', '[ap_content]', $content );
$content = \str_replace( '%permalink%', '[ap_permalink type="html"]', $content );
$content = \str_replace( '%shortlink%', '[ap_shortlink type="html"]', $content );
$content = \str_replace( '%hashtags%', '[ap_hashtags]', $content );
$content = \str_replace( '%tags%', '[ap_hashtags]', $content );
// Store the new template if required.
if ( $content !== $old_content || $need_update ) {
\update_option( 'activitypub_custom_post_content', $content );
}
}
}

407
includes/collection/class-followers.php Normal file
View file

@ -0,0 +1,407 @@
<?php
namespace Activitypub\Collection;
use WP_Error;
use Exception;
use WP_Term_Query;
use Activitypub\Http;
use Activitypub\Webfinger;
use Activitypub\Model\Activity;
use Activitypub\Model\Follower;
use function Activitypub\is_tombstone;
use function Activitypub\get_remote_metadata_by_actor;
/**
* ActivityPub Followers Collection
*
* @author Matthias Pfefferle
*/
class Followers {
const TAXONOMY = 'activitypub-followers';
/**
* Register WordPress hooks/actions and register Taxonomy
*
* @return void
*/
public static function init() {
// register "followers" taxonomy
self::register_taxonomy();
\add_action( 'activitypub_inbox_follow', array( self::class, 'handle_follow_request' ), 10, 2 );
\add_action( 'activitypub_inbox_undo', array( self::class, 'handle_undo_request' ), 10, 2 );
\add_action( 'activitypub_followers_post_follow', array( self::class, 'send_follow_response' ), 10, 4 );
}
/**
* Register the "Followers" Taxonomy
*
* @return void
*/
public static function register_taxonomy() {
$args = array(
'labels' => array(
'name' => _x( 'Followers', 'taxonomy general name', 'activitypub' ),
'singular_name' => _x( 'Followers', 'taxonomy singular name', 'activitypub' ),
'menu_name' => __( 'Followers', 'activitypub' ),
),
'hierarchical' => false,
'show_ui' => false,
'show_in_menu' => false,
'show_in_nav_menus' => false,
'show_admin_column' => false,
'query_var' => false,
'rewrite' => false,
'public' => false,
'capabilities' => array(
'edit_terms' => null,
),
);
register_taxonomy( self::TAXONOMY, 'user', $args );
register_taxonomy_for_object_type( self::TAXONOMY, 'user' );
register_term_meta(
self::TAXONOMY,
'name',
array(
'type' => 'string',
'single' => true,
'sanitize_callback' => function( $value ) {
return sanitize_user( $value );
},
)
);
register_term_meta(
self::TAXONOMY,
'username',
array(
'type' => 'string',
'single' => true,
'sanitize_callback' => function( $value ) {
return sanitize_user( $value, true );
},
)
);
register_term_meta(
self::TAXONOMY,
'avatar',
array(
'type' => 'string',
'single' => true,
'sanitize_callback' => function( $value ) {
if ( filter_var( $value, FILTER_VALIDATE_URL ) === false ) {
return '';
}
return esc_url_raw( $value );
},
)
);
register_term_meta(
self::TAXONOMY,
'inbox',
array(
'type' => 'string',
'single' => true,
'sanitize_callback' => function( $value ) {
if ( filter_var( $value, FILTER_VALIDATE_URL ) === false ) {
throw new Exception( '"inbox" has to be a valid URL' );
}
return esc_url_raw( $value );
},
)
);
register_term_meta(
self::TAXONOMY,
'shared_inbox',
array(
'type' => 'string',
'single' => true,
'sanitize_callback' => function( $value ) {
if ( filter_var( $value, FILTER_VALIDATE_URL ) === false ) {
return null;
}
return esc_url_raw( $value );
},
)
);
register_term_meta(
self::TAXONOMY,
'updated_at',
array(
'type' => 'string',
'single' => true,
'sanitize_callback' => function( $value ) {
if ( ! is_numeric( $value ) && (int) $value !== $value ) {
$value = strtotime( 'now' );
}
return $value;
},
)
);
register_term_meta(
self::TAXONOMY,
'errors',
array(
'type' => 'string',
'single' => false,
'sanitize_callback' => function( $value ) {
if ( ! is_string( $value ) ) {
throw new Exception( 'Error message is no valid string' );
}
return esc_sql( $value );
},
)
);
do_action( 'activitypub_after_register_taxonomy' );
}
/**
* Handle the "Follow" Request
*
* @param array $object The JSON "Follow" Activity
* @param int $user_id The ID of the ID of the WordPress User
*
* @return void
*/
public static function handle_follow_request( $object, $user_id ) {
// save follower
$follower = self::add_follower( $user_id, $object['actor'] );
do_action( 'activitypub_followers_post_follow', $object['actor'], $object, $user_id, $follower );
}
/**
* Handles "Unfollow" requests
*
* @param array $object The JSON "Undo" Activity
* @param int $user_id The ID of the ID of the WordPress User
*/
public static function handle_undo_request( $object, $user_id ) {
if (
isset( $object['object'] ) &&
isset( $object['object']['type'] ) &&
'Follow' === $object['object']['type']
) {
self::remove_follower( $user_id, $object['actor'] );
}
}
/**
* Add a new Follower
*
* @param int $user_id The ID of the WordPress User
* @param string $actor The Actor URL
*
* @return array|WP_Error The Follower (WP_Term array) or an WP_Error
*/
public static function add_follower( $user_id, $actor ) {
$meta = get_remote_metadata_by_actor( $actor );
if ( empty( $meta ) || ! is_array( $meta ) || is_wp_error( $meta ) ) {
return $meta;
}
$follower = new Follower( $actor );
$follower->from_meta( $meta );
$follower->upsert();
$result = wp_set_object_terms( $user_id, $follower->get_actor(), self::TAXONOMY, true );
if ( is_wp_error( $result ) ) {
return $result;
} else {
return $follower;
}
}
/**
* Remove a Follower
*
* @param int $user_id The ID of the WordPress User
* @param string $actor The Actor URL
*
* @return bool|WP_Error True on success, false or WP_Error on failure.
*/
public static function remove_follower( $user_id, $actor ) {
return wp_remove_object_terms( $user_id, $actor, self::TAXONOMY );
}
/**
* Remove a Follower
*
* @param int $user_id The ID of the WordPress User
* @param string $actor The Actor URL
*
* @return \Activitypub\Model\Follower The Follower object
*/
public static function get_follower( $user_id, $actor ) {
$terms = new WP_Term_Query(
array(
'name' => $actor,
'taxonomy' => self::TAXONOMY,
'hide_empty' => false,
'object_ids' => $user_id,
'number' => 1,
)
);
$term = $terms->get_terms();
if ( is_array( $term ) && ! empty( $term ) ) {
$term = reset( $term );
return new Follower( $term->name );
}
return null;
}
/**
* Send Accept response
*
* @param string $actor The Actor URL
* @param array $object The Activity object
* @param int $user_id The ID of the WordPress User
* @param Activitypub\Model\Follower $follower The Follower object
*
* @return void
*/
public static function send_follow_response( $actor, $object, $user_id, $follower ) {
if ( is_wp_error( $follower ) ) {
// it is not even possible to send a "Reject" because
// we can not get the Remote-Inbox
return;
}
if ( isset( $object['user_id'] ) ) {
unset( $object['user_id'] );
unset( $object['@context'] );
}
// get inbox
$inbox = $follower->get_inbox();
// send "Accept" activity
$activity = new Activity( 'Accept' );
$activity->set_object( $object );
$activity->set_actor( \get_author_posts_url( $user_id ) );
$activity->set_to( $actor );
$activity->set_id( \get_author_posts_url( $user_id ) . '#follow-' . \preg_replace( '~^https?://~', '', $actor ) );
$activity = $activity->to_simple_json();
$response = Http::post( $inbox, $activity, $user_id );
}
/**
* Get the Followers of a given user
*
* @param int $user_id The ID of the WordPress User
* @param string $output The output format, supported ARRAY_N, OBJECT and ACTIVITYPUB_OBJECT
* @param int $number Limts the result
* @param int $offset Offset
*
* @return array The Term list of Followers, the format depends on $output
*/
public static function get_followers( $user_id, $output = ARRAY_N, $number = null, $offset = null, $args = array() ) {
$defaults = array(
'taxonomy' => self::TAXONOMY,
'hide_empty' => false,
'object_ids' => $user_id,
'number' => $number,
'offset' => $offset,
'orderby' => 'id',
'order' => 'ASC',
);
$args = wp_parse_args( $args, $defaults );
$terms = new WP_Term_Query( $args );
$items = array();
// change output format
switch ( $output ) {
case ACTIVITYPUB_OBJECT:
foreach ( $terms->get_terms() as $follower ) {
$items[] = new Follower( $follower->name ); // phpcs:ignore
}
return $items;
case OBJECT:
return $terms->get_terms();
case ARRAY_N:
default:
foreach ( $terms->get_terms() as $follower ) {
$items[] = $follower->name; // phpcs:ignore
}
return $items;
}
}
/**
* Count the total number of followers
*
* @param int $user_id The ID of the WordPress User
*
* @return int The number of Followers
*/
public static function count_followers( $user_id ) {
return count( self::get_followers( $user_id ) );
}
/**
* Returns all Inboxes fo a Users Followers
*
* @param int $user_id The ID of the WordPress User
*
* @return array The list of Inboxes
*/
public static function get_inboxes( $user_id ) {
// get all Followers of a ID of the WordPress User
$terms = new WP_Term_Query(
array(
'taxonomy' => self::TAXONOMY,
'hide_empty' => false,
'object_ids' => $user_id,
'fields' => 'ids',
'meta_query' => array(
array(
'key' => 'inbox',
'compare' => 'EXISTS',
),
),
)
);
$terms = $terms->get_terms();
if ( ! $terms ) {
return array();
}
global $wpdb;
$results = $wpdb->get_col(
$wpdb->prepare(
"SELECT DISTINCT meta_value FROM {$wpdb->termmeta}
WHERE term_id IN (" . implode( ', ', array_fill( 0, count( $terms ), '%d' ) ) . ")
AND meta_key = 'shared_inbox'
AND meta_value IS NOT NULL",
$terms
)
);
return array_filter( $results );
}
}

183
includes/functions.php
View file

@ -33,58 +33,11 @@ function get_context() {
}
function safe_remote_post( $url, $body, $user_id ) {
$date = \gmdate( 'D, d M Y H:i:s T' );
$digest = \Activitypub\Signature::generate_digest( $body );
$signature = \Activitypub\Signature::generate_signature( $user_id, 'post', $url, $date, $digest );
$wp_version = \get_bloginfo( 'version' );
$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
$args = array(
'timeout' => 100,
'limit_response_size' => 1048576,
'redirection' => 3,
'user-agent' => "$user_agent; ActivityPub",
'headers' => array(
'Accept' => 'application/activity+json',
'Content-Type' => 'application/activity+json',
'Digest' => "SHA-256=$digest",
'Signature' => $signature,
'Date' => $date,
),
'body' => $body,
);
$response = \wp_safe_remote_post( $url, $args );
\do_action( 'activitypub_safe_remote_post_response', $response, $url, $body, $user_id );
return $response;
return \Activitypub\Http::post( $url, $body, $user_id );
}
function safe_remote_get( $url, $user_id ) {
$date = \gmdate( 'D, d M Y H:i:s T' );
$signature = \Activitypub\Signature::generate_signature( $user_id, 'get', $url, $date );
$wp_version = \get_bloginfo( 'version' );
$user_agent = \apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . \get_bloginfo( 'url' ) );
$args = array(
'timeout' => apply_filters( 'activitypub_remote_get_timeout', 100 ),
'limit_response_size' => 1048576,
'redirection' => 3,
'user-agent' => "$user_agent; ActivityPub",
'headers' => array(
'Accept' => 'application/activity+json',
'Content-Type' => 'application/activity+json',
'Signature' => $signature,
'Date' => $date,
),
);
$response = \wp_safe_remote_get( $url, $args );
\do_action( 'activitypub_safe_remote_get_response', $response, $url, $user_id );
return $response;
return \Activitypub\Http::get( $url, $user_id );
}
/**
@ -95,15 +48,15 @@ function safe_remote_get( $url, $user_id ) {
* @return string The user-resource
*/
function get_webfinger_resource( $user_id ) {
return \Activitypub\Webfinger::get_user_resource( $user_id );
return Webfinger::get_user_resource( $user_id );
}
/**
* [get_metadata_by_actor description]
* Requests the Meta-Data from the Actors profile
*
* @param string $actor
* @param string $actor The Actor URL
*
* @return array
* @return array The Actor profile as array
*/
function get_remote_metadata_by_actor( $actor ) {
$pre = apply_filters( 'pre_get_remote_metadata_by_actor', false, $actor );
@ -149,7 +102,7 @@ function get_remote_metadata_by_actor( $actor ) {
return 3;
};
add_filter( 'activitypub_remote_get_timeout', $short_timeout );
$response = \Activitypub\safe_remote_get( $actor, $user_id );
$response = Http::get( $actor, $user_id );
remove_filter( 'activitypub_remote_get_timeout', $short_timeout );
if ( \is_wp_error( $response ) ) {
\set_transient( $transient_key, $response, HOUR_IN_SECONDS ); // Cache the error for a shorter period.
@ -159,88 +112,17 @@ function get_remote_metadata_by_actor( $actor ) {
$metadata = \wp_remote_retrieve_body( $response );
$metadata = \json_decode( $metadata, true );
\set_transient( $transient_key, $metadata, WEEK_IN_SECONDS );
if ( ! $metadata ) {
$metadata = new \WP_Error( 'activitypub_invalid_json', \__( 'No valid JSON data', 'activitypub' ), $actor );
\set_transient( $transient_key, $metadata, HOUR_IN_SECONDS ); // Cache the error for a shorter period.
return $metadata;
}
\set_transient( $transient_key, $metadata, WEEK_IN_SECONDS );
return $metadata;
}
/**
* [get_inbox_by_actor description]
* @param [type] $actor [description]
* @return [type] [description]
*/
function get_inbox_by_actor( $actor ) {
$metadata = \Activitypub\get_remote_metadata_by_actor( $actor );
if ( \is_wp_error( $metadata ) ) {
return $metadata;
}
if ( isset( $metadata['endpoints'] ) && isset( $metadata['endpoints']['sharedInbox'] ) ) {
return $metadata['endpoints']['sharedInbox'];
}
if ( \array_key_exists( 'inbox', $metadata ) ) {
return $metadata['inbox'];
}
return new \WP_Error( 'activitypub_no_inbox', \__( 'No "Inbox" found', 'activitypub' ), $metadata );
}
/**
* [get_inbox_by_actor description]
* @param [type] $actor [description]
* @return [type] [description]
*/
function get_publickey_by_actor( $actor, $key_id ) {
$metadata = \Activitypub\get_remote_metadata_by_actor( $actor );
if ( \is_wp_error( $metadata ) ) {
return $metadata;
}
if (
isset( $metadata['publicKey'] ) &&
isset( $metadata['publicKey']['id'] ) &&
isset( $metadata['publicKey']['owner'] ) &&
isset( $metadata['publicKey']['publicKeyPem'] ) &&
$key_id === $metadata['publicKey']['id'] &&
$actor === $metadata['publicKey']['owner']
) {
return $metadata['publicKey']['publicKeyPem'];
}
return new \WP_Error( 'activitypub_no_public_key', \__( 'No "Public-Key" found', 'activitypub' ), $metadata );
}
function get_follower_inboxes( $user_id, $cc = array() ) {
$followers = \Activitypub\Peer\Followers::get_followers( $user_id );
$followers = array_merge( $followers, $cc );
$followers = array_unique( $followers );
$inboxes = array();
foreach ( $followers as $follower ) {
$inbox = \Activitypub\get_inbox_by_actor( $follower );
if ( ! $inbox || \is_wp_error( $inbox ) ) {
continue;
}
// init array if empty
if ( ! isset( $inboxes[ $inbox ] ) ) {
$inboxes[ $inbox ] = array();
}
$inboxes[ $inbox ][] = $follower;
}
return $inboxes;
}
function get_identifier_settings( $user_id ) {
?>
<table class="form-table">
@ -261,19 +143,11 @@ function get_identifier_settings( $user_id ) {
}
function get_followers( $user_id ) {
$followers = \Activitypub\Peer\Followers::get_followers( $user_id );
if ( ! $followers ) {
return array();
}
return $followers;
return Collection\Followers::get_followers( $user_id );
}
function count_followers( $user_id ) {
$followers = \Activitypub\get_followers( $user_id );
return \count( $followers );
return Collection\Followers::count_followers( $user_id );
}
/**
@ -323,3 +197,38 @@ function url_to_authorid( $url ) {
return 0;
}
/**
* Return the custom Activity Pub description, if set, or default author description.
*
* @param int $user_id The user ID.
* @return string
*/
function get_author_description( $user_id ) {
$description = get_user_meta( $user_id, 'activitypub_user_description', true );
if ( empty( $description ) ) {
$description = get_user_meta( $user_id, 'description', true );
}
return $description;
}
/**
* Check for Tombstone Objects
*
* @see https://www.w3.org/TR/activitypub/#delete-activity-outbox
*
* @param WP_Error $wp_error A WP_Error-Response of an HTTP-Request
*
* @return boolean true if HTTP-Code is 410 or 404
*/
function is_tombstone( $wp_error ) {
if ( ! is_wp_error( $wp_error ) ) {
return false;
}
if ( in_array( (int) $wp_error->get_error_code(), array( 404, 410 ), true ) ) {
return true;
}
return false;
}

317
includes/model/class-follower.php Normal file
View file

@ -0,0 +1,317 @@
<?php
namespace Activitypub\Model;
use Activitypub\Collection\Followers;
/**
* ActivityPub Follower Class
*
* This Object represents a single Follower.
* There is no direct reference to a WordPress User here.
*
* @author Matthias Pfefferle
*
* @see https://www.w3.org/TR/activitypub/#follow-activity-inbox
*/
class Follower {
/**
* The Object ID
*
* @var int
*/
private $id;
/**
* The Actor-URL of the Follower
*
* @var string
*/
private $actor;
/**
* The Object slug
*
* This is a requirement of the Term-Meta but will not
* be actively used in the ActivityPub context.
*
* @var string
*/
private $slug;
/**
* The Object Name
*
* This is the same as the Actor-URL
*
* @var string
*/
private $name;
/**
* The Username
*
* @var string
*/
private $username;
/**
* The Avatar URL
*
* @var string
*/
private $avatar;
/**
* The URL to the Followers Inbox
*
* @var string
*/
private $inbox;
/**
* The URL to the Servers Shared-Inbox
*
* If the Server does not support Shared-Inboxes,
* the Inbox will be stored.
*
* @var string
*/
private $shared_inbox;
/**
* The date, the Follower was updated
*
* @var string untixtimestamp
*/
private $updated_at;
/**
* The complete Remote-Profile of the Follower
*
* @var array
*/
private $meta;
/**
* The latest received error.
*
* This will only temporary and will saved to $this->errors
*
* @var string
*/
private $error;
/**
* A list of errors
*
* @var array
*/
private $errors;
/**
* Maps the meta fields to the local db fields
*
* @var array
*/
private $map_meta = array(
'name' => 'name',
'preferredUsername' => 'username',
'inbox' => 'inbox',
);
/**
* Constructor
*
* @param WP_Post $post
*/
public function __construct( $actor ) {
$this->actor = $actor;
$term = get_term_by( 'name', $actor, Followers::TAXONOMY );
if ( $term ) {
$this->id = $term->term_id;
$this->slug = $term->slug;
$this->meta = json_decode( $term->meta );
}
}
/**
* Magic function to implement getter and setter
*
* @param string $method
* @param string $params
*
* @return void
*/
public function __call( $method, $params ) {
$var = \strtolower( \substr( $method, 4 ) );
if ( \strncasecmp( $method, 'get', 3 ) === 0 ) {
if ( empty( $this->$var ) ) {
return $this->get( $var );
}
return $this->$var;
}
if ( \strncasecmp( $method, 'set', 3 ) === 0 ) {
$this->$var = $params[0];
}
}
public function from_meta( $meta ) {
$this->meta = $meta;
foreach ( $this->map_meta as $remote => $internal ) {
if ( ! empty( $meta[ $remote ] ) ) {
$this->$internal = $meta[ $remote ];
}
}
if ( ! empty( $meta['icon']['url'] ) ) {
$this->avatar = $meta['icon']['url'];
}
if ( ! empty( $meta['endpoints']['sharedInbox'] ) ) {
$this->shared_inbox = $meta['endpoints']['sharedInbox'];
} elseif ( ! empty( $meta['inbox'] ) ) {
$this->shared_inbox = $meta['inbox'];
}
$this->updated_at = \strtotime( 'now' );
}
public function get( $attribute ) {
if ( $this->$attribute ) {
return $this->$attribute;
}
$attribute = get_term_meta( $this->id, $attribute, true );
if ( $attribute ) {
$this->$attribute = $attribute;
return $attribute;
}
$attribute = $this->get_meta_by( $attribute );
if ( $attribute ) {
$this->$attribute = $attribute;
return $attribute;
}
return null;
}
public function get_errors() {
if ( $this->errors ) {
return $this->errors;
}
$this->errors = get_term_meta( $this->id, 'errors' );
return $this->errors;
}
public function count_errors() {
$errors = $this->get_errors();
if ( is_array( $errors ) && ! empty( $errors ) ) {
return count( $errors );
}
return 0;
}
public function get_latest_error_message() {
$errors = $this->get_errors();
if ( is_array( $errors ) && ! empty( $errors ) ) {
return reset( $errors );
}
return '';
}
public function get_meta_by( $attribute ) {
$meta = $this->get_meta();
// try mapped data (see $this->map_meta)
foreach ( $this->map_meta as $remote => $local ) {
if ( $attribute === $local && isset( $meta[ $remote ] ) ) {
return $meta[ $remote ];
}
}
// try ActivityPub attribtes
if ( ! empty( $this->map_meta[ $attribute ] ) ) {
return $this->map_meta[ $attribute ];
}
return null;
}
public function get_meta() {
if ( $this->meta ) {
return $this->meta;
}
return null;
}
public function update() {
$term = wp_update_term(
$this->id,
Followers::TAXONOMY,
array(
'description' => wp_json_encode( $this->get_meta( true ) ),
)
);
$this->updated_at = \strtotime( 'now' );
$this->update_term_meta();
}
public function save() {
$term = wp_insert_term(
$this->actor,
Followers::TAXONOMY,
array(
'slug' => sanitize_title( $this->get_actor() ),
'description' => wp_json_encode( $this->get_meta() ),
)
);
$this->id = $term['term_id'];
$this->update_term_meta();
}
public function upsert() {
if ( $this->id ) {
$this->update();
} else {
$this->save();
}
}
protected function update_term_meta() {
$attributes = array( 'inbox', 'shared_inbox', 'avatar', 'updated_at', 'name', 'username' );
foreach ( $attributes as $attribute ) {
if ( $this->get( $attribute ) ) {
update_term_meta( $this->id, $attribute, $this->get( $attribute ) );
}
}
if ( $this->error ) {
if ( is_string( $this->error ) ) {
$error = $this->error;
} elseif ( is_wp_error( $this->error ) ) {
$error = $this->error->get_error_message();
} else {
$error = __( 'Unknown Error or misconfigured Error-Message', 'activitypub' );
}
add_term_meta( $this->id, 'errors', $error );
}
}
}

126
includes/model/class-post.php
View file

@ -28,6 +28,13 @@ class Post {
*/
private $id;
/**
* The Object URL.
*
* @var string
*/
private $url;
/**
* The Object Summary.
*
@ -179,6 +186,7 @@ class Post {
$array = array(
'id' => $this->get_id(),
'url' => $this->get_url(),
'type' => $this->get_object_type(),
'published' => \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $post->post_date_gmt ) ),
'attributedTo' => \get_author_posts_url( $post->post_author ),
@ -207,13 +215,13 @@ class Post {
}
/**
* Returns the ID of an Activity Object
* Returns the URL of an Activity Object
*
* @return string
*/
public function get_id() {
if ( $this->id ) {
return $this->id;
public function get_url() {
if ( $this->url ) {
return $this->url;
}
$post = $this->post;
@ -224,11 +232,26 @@ class Post {
$permalink = \get_permalink( $post );
}
$this->id = $permalink;
$this->url = $permalink;
return $permalink;
}
/**
* Returns the ID of an Activity Object
*
* @return string
*/
public function get_id() {
if ( $this->id ) {
return $this->id;
}
$this->id = $this->get_url();
return $this->id;
}
/**
* Returns a list of Image Attachments
*
@ -282,16 +305,31 @@ class Post {
// get URLs for each image
foreach ( $image_ids as $id ) {
$alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
$thumbnail = \wp_get_attachment_image_src( $id, 'full' );
$mimetype = \get_post_mime_type( $id );
$image_size = 'full';
/**
* Filter the image URL returned for each post.
*
* @param array|false $thumbnail The image URL, or false if no image is available.
* @param int $id The attachment ID.
* @param string $image_size The image size to retrieve. Set to 'full' by default.
*/
$thumbnail = apply_filters(
'activitypub_get_image',
$this->get_image( $id, $image_size ),
$id,
$image_size
);
if ( $thumbnail ) {
$mimetype = \get_post_mime_type( $id );
$alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
$image = array(
'type' => 'Image',
'url' => $thumbnail[0],
'mediaType' => $mimetype,
);
if ( $alt ) {
$image['name'] = $alt;
}
@ -304,6 +342,36 @@ class Post {
return $images;
}
/**
* Return details about an image attachment.
*
* @param int $id The attachment ID.
* @param string $image_size The image size to retrieve. Set to 'full' by default.
*
* @return array|false Array of image data, or boolean false if no image is available.
*/
public function get_image( $id, $image_size = 'full' ) {
/**
* Hook into the image retrieval process. Before image retrieval.
*
* @param int $id The attachment ID.
* @param string $image_size The image size to retrieve. Set to 'full' by default.
*/
do_action( 'activitypub_get_image_pre', $id, $image_size );
$thumbnail = \wp_get_attachment_image_src( $id, $image_size );
/**
* Hook into the image retrieval process. After image retrieval.
*
* @param int $id The attachment ID.
* @param string $image_size The image size to retrieve. Set to 'full' by default.
*/
do_action( 'activitypub_get_image_pre', $id, $image_size );
return $thumbnail;
}
/**
* Returns a list of Tags, used in the Post
*
@ -463,48 +531,6 @@ class Post {
return "[ap_content]\n\n[ap_hashtags]\n\n[ap_permalink type=\"html\"]";
}
// Upgrade from old template codes to shortcodes.
$content = self::upgrade_post_content_template();
return $content;
}
/**
* Updates the custom template to use shortcodes instead of the deprecated templates.
*
* @return string the updated template content
*/
public static function upgrade_post_content_template() {
// Get the custom template.
$old_content = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
// If the old content exists but is a blank string, we're going to need a flag to updated it even
// after setting it to the default contents.
$need_update = false;
// If the old contents is blank, use the defaults.
if ( '' === $old_content ) {
$old_content = ACTIVITYPUB_CUSTOM_POST_CONTENT;
$need_update = true;
}
// Set the new content to be the old content.
$content = $old_content;
// Convert old templates to shortcodes.
$content = \str_replace( '%title%', '[ap_title]', $content );
$content = \str_replace( '%excerpt%', '[ap_excerpt]', $content );
$content = \str_replace( '%content%', '[ap_content]', $content );
$content = \str_replace( '%permalink%', '[ap_permalink type="html"]', $content );
$content = \str_replace( '%shortlink%', '[ap_shortlink type="html"]', $content );
$content = \str_replace( '%hashtags%', '[ap_hashtags]', $content );
$content = \str_replace( '%tags%', '[ap_hashtags]', $content );
// Store the new template if required.
if ( $content !== $old_content || $need_update ) {
\update_option( 'activitypub_custom_post_content', $content );
}
return $content;
}
}

66
includes/peer/class-followers.php
View file

@ -9,76 +9,26 @@ namespace Activitypub\Peer;
class Followers {
public static function get_followers( $author_id ) {
$followers = \get_user_option( 'activitypub_followers', $author_id );
_deprecated_function( __METHOD__, '1.0.0', '\Activitypub\Collection\Followers::get_followers' );
if ( ! $followers ) {
return array();
}
foreach ( $followers as $key => $follower ) {
if (
\is_array( $follower ) &&
isset( $follower['type'] ) &&
'Person' === $follower['type'] &&
isset( $follower['id'] ) &&
false !== \filter_var( $follower['id'], \FILTER_VALIDATE_URL )
) {
$followers[ $key ] = $follower['id'];
}
}
return $followers;
return \Activitypub\Collection\Followers::get_followers( $author_id );
}
public static function count_followers( $author_id ) {
$followers = self::get_followers( $author_id );
_deprecated_function( __METHOD__, '1.0.0', '\Activitypub\Collection\Followers::count_followers' );
return \count( $followers );
return \Activitypub\Collection\Followers::count_followers( $author_id );
}
public static function add_follower( $actor, $author_id ) {
$followers = \get_user_option( 'activitypub_followers', $author_id );
_deprecated_function( __METHOD__, '1.0.0', '\Activitypub\Collection\Followers::add_follower' );
if ( ! \is_string( $actor ) ) {
if (
\is_array( $actor ) &&
isset( $actor['type'] ) &&
'Person' === $actor['type'] &&
isset( $actor['id'] ) &&
false !== \filter_var( $actor['id'], \FILTER_VALIDATE_URL )
) {
$actor = $actor['id'];
}
return new \WP_Error(
'invalid_actor_object',
\__( 'Unknown Actor schema', 'activitypub' ),
array(
'status' => 404,
)
);
}
if ( ! \is_array( $followers ) ) {
$followers = array( $actor );
} else {
$followers[] = $actor;
}
$followers = \array_unique( $followers );
\update_user_meta( $author_id, 'activitypub_followers', $followers );
return \Activitypub\Collection\Followers::add_follower( $author_id, $actor );
}
public static function remove_follower( $actor, $author_id ) {
$followers = \get_user_option( 'activitypub_followers', $author_id );
_deprecated_function( __METHOD__, '1.0.0', '\Activitypub\Collection\Followers::remove_follower' );
foreach ( $followers as $key => $value ) {
if ( $value === $actor ) {
unset( $followers[ $key ] );
}
}
\update_user_meta( $author_id, 'activitypub_followers', $followers );
return \Activitypub\Collection\Followers::remove_follower( $author_id, $actor );
}
}

21
includes/rest/class-followers.php
View file

@ -1,6 +1,12 @@
<?php
namespace Activitypub\Rest;
use WP_Error;
use stdClass;
use WP_REST_Server;
use WP_REST_Response;
use Activitypub\Collection\Followers as FollowerCollection;
/**
* ActivityPub Followers REST-Class
*
@ -25,7 +31,7 @@ class Followers {
'/users/(?P<user_id>\d+)/followers',
array(
array(
'methods' => \WP_REST_Server::READABLE,
'methods' => WP_REST_Server::READABLE,
'callback' => array( self::class, 'get' ),
'args' => self::request_parameters(),
'permission_callback' => '__return_true',
@ -46,7 +52,7 @@ class Followers {
$user = \get_user_by( 'ID', $user_id );
if ( ! $user ) {
return new \WP_Error(
return new WP_Error(
'rest_invalid_param',
\__( 'User not found', 'activitypub' ),
array(
@ -63,7 +69,7 @@ class Followers {
*/
\do_action( 'activitypub_outbox_pre' );
$json = new \stdClass();
$json = new stdClass();
$json->{'@context'} = \Activitypub\get_context();
@ -73,14 +79,11 @@ class Followers {
$json->type = 'OrderedCollectionPage';
$json->partOf = \get_rest_url( null, "/activitypub/1.0/users/$user_id/followers" ); // phpcs:ignore
$json->totalItems = \Activitypub\count_followers( $user_id ); // phpcs:ignore
$json->orderedItems = \Activitypub\Peer\Followers::get_followers( $user_id ); // phpcs:ignore
$json->first = $json->partOf; // phpcs:ignore
$json->totalItems = FollowerCollection::count_followers( $user_id ); // phpcs:ignore
$json->orderedItems = FollowerCollection::get_followers( $user_id, ARRAY_N ); // phpcs:ignore
$json->first = \get_rest_url( null, "/activitypub/1.0/users/$user_id/followers" );
$response = new \WP_REST_Response( $json, 200 );
$response = new WP_REST_Response( $json, 200 );
$response->header( 'Content-Type', 'application/activity+json' );
return $response;

43
includes/rest/class-inbox.php
View file

@ -19,10 +19,8 @@ class Inbox {
*/
public static function init() {
\add_action( 'rest_api_init', array( self::class, 'register_routes' ) );
\add_action( 'activitypub_inbox_follow', array( self::class, 'handle_follow' ), 10, 2 );
\add_action( 'activitypub_inbox_undo', array( self::class, 'handle_unfollow' ), 10, 2 );
//\add_action( 'activitypub_inbox_like', array( self::class, 'handle_reaction' ), 10, 2 );
//\add_action( 'activitypub_inbox_announce', array( self::class, 'handle_reaction' ), 10, 2 );
\add_filter( 'rest_pre_serve_request', array( self::class, 'serve_request' ), 11, 4 );
\add_action( 'activitypub_inbox_create', array( self::class, 'handle_create' ), 10, 2 );
}
@ -319,43 +317,6 @@ class Inbox {
return $params;
}
/**
* Handles "Follow" requests
*
* @param array $object The activity-object
* @param int $user_id The id of the local blog-user
*/
public static function handle_follow( $object, $user_id ) {
// save follower
Followers::add_follower( $object['actor'], $user_id );
// get inbox
$inbox = \Activitypub\get_inbox_by_actor( $object['actor'] );
// send "Accept" activity
$activity = new Activity( 'Accept' );
$activity->set_object( $object );
$activity->set_actor( \get_author_posts_url( $user_id ) );
$activity->set_to( $object['actor'] );
$activity->set_id( \get_author_posts_url( $user_id ) . '#follow-' . \preg_replace( '~^https?://~', '', $object['actor'] ) );
$activity = $activity->to_simple_json();
$response = \Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
/**
* Handles "Unfollow" requests
*
* @param array $object The activity-object
* @param int $user_id The id of the local blog-user
*/
public static function handle_unfollow( $object, $user_id ) {
if ( isset( $object['object'] ) && isset( $object['object']['type'] ) && 'Follow' === $object['object']['type'] ) {
Followers::remove_follower( $object['actor'], $user_id );
}
}
/**
* Handles "Reaction" requests
*

15
includes/rest/class-nodeinfo.php
View file

@ -75,13 +75,24 @@ class Nodeinfo {
'version' => \get_bloginfo( 'version' ),
);
$users = \count_users();
$users = \get_users(
array(
'capability__in' => array( 'publish_posts' ),
)
);
if ( is_array( $users ) ) {
$users = count( $users );
} else {
$users = 1;
}
$posts = \wp_count_posts();
$comments = \wp_count_comments();
$nodeinfo['usage'] = array(
'users' => array(
'total' => (int) $users['total_users'],
'total' => $users,
),
'localPosts' => (int) $posts->publish,
'localComments' => (int) $comments->approved,

7
includes/rest/class-webfinger.php
View file

@ -54,15 +54,16 @@ class Webfinger {
$resource = \str_replace( 'acct:', '', $resource );
$resource_identifier = \substr( $resource, 0, \strrpos( $resource, '@' ) );
$resource_host = \substr( \strrchr( $resource, '@' ), 1 );
$resource_host = \str_replace( 'www.', '', \substr( \strrchr( $resource, '@' ), 1 ) );
$blog_host = \str_replace( 'www.', '', \wp_parse_url( \home_url( '/' ), \PHP_URL_HOST ) );
if ( \wp_parse_url( \home_url( '/' ), \PHP_URL_HOST ) !== $resource_host ) {
if ( $blog_host !== $resource_host ) {
return new WP_Error( 'activitypub_wrong_host', \__( 'Resource host does not match blog host', 'activitypub' ), array( 'status' => 404 ) );
}
$user = \get_user_by( 'login', \esc_sql( $resource_identifier ) );
if ( ! $user || ! user_can( $user, 'publish_posts' ) ) {
if ( ! $user || ! \user_can( $user, 'publish_posts' ) ) {
return new WP_Error( 'activitypub_user_not_found', \__( 'User not found', 'activitypub' ), array( 'status' => 404 ) );
}

117
includes/table/class-followers.php Normal file
View file

@ -0,0 +1,117 @@
<?php
namespace Activitypub\Table;
use WP_List_Table;
use Activitypub\Collection\Followers as FollowerCollection;
if ( ! \class_exists( '\WP_List_Table' ) ) {
require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
}
class Followers extends WP_List_Table {
public function get_columns() {
return array(
'cb' => '<input type="checkbox" />',
'avatar' => \__( 'Avatar', 'activitypub' ),
'name' => \__( 'Name', 'activitypub' ),
'username' => \__( 'Username', 'activitypub' ),
'identifier' => \__( 'Identifier', 'activitypub' ),
'errors' => \__( 'Errors', 'activitypub' ),
'latest-error' => \__( 'Latest Error Message', 'activitypub' ),
);
}
public function get_sortable_columns() {
return array();
}
public function prepare_items() {
$columns = $this->get_columns();
$hidden = array();
$this->process_action();
$this->_column_headers = array( $columns, $hidden, $this->get_sortable_columns() );
$page_num = $this->get_pagenum();
$per_page = 20;
$follower = FollowerCollection::get_followers( \get_current_user_id(), ACTIVITYPUB_OBJECT, $per_page, ( $page_num - 1 ) * $per_page );
$counter = FollowerCollection::count_followers( \get_current_user_id() );
$this->items = array();
$this->set_pagination_args(
array(
'total_items' => $counter,
'total_pages' => round( $counter / $per_page ),
'per_page' => $per_page,
)
);
foreach ( $follower as $follower ) {
$item = array(
'avatar' => esc_attr( $follower->get_avatar() ),
'name' => esc_attr( $follower->get_name() ),
'username' => esc_attr( $follower->get_username() ),
'identifier' => esc_attr( $follower->get_actor() ),
'errors' => $follower->count_errors(),
'latest-error' => $follower->get_latest_error_message(),
);
$this->items[] = $item;
}
}
public function get_bulk_actions() {
return array(
'delete' => __( 'Delete', 'activitypub' ),
);
}
public function column_default( $item, $column_name ) {
if ( ! array_key_exists( $column_name, $item ) ) {
return __( 'None', 'activitypub' );
}
return $item[ $column_name ];
}
public function column_avatar( $item ) {
return sprintf(
'<img src="%s" width="25px;" />',
$item['avatar']
);
}
public function column_identifier( $item ) {
return sprintf(
'<a href="%s" target="_blank">%s</a>',
$item['identifier'],
$item['identifier']
);
}
public function column_cb( $item ) {
return sprintf( '<input type="checkbox" name="followers[]" value="%s" />', esc_attr( $item['identifier'] ) );
}
public function process_action() {
if ( ! isset( $_REQUEST['followers'] ) || ! isset( $_REQUEST['_apnonce'] ) ) {
return false;
}
if ( ! wp_verify_nonce( $_REQUEST['_apnonce'], 'activitypub-followers-list' ) ) {
return false;
}
if ( ! current_user_can( 'edit_user', \get_current_user_id() ) ) {
return false;
}
$followers = $_REQUEST['followers']; // phpcs:ignore
switch ( $this->current_action() ) {
case 'delete':
FollowerCollection::remove_follower( \get_current_user_id(), $followers );
break;
}
}
}

36
includes/table/followers-list.php
View file

@ -1,36 +0,0 @@
<?php
namespace Activitypub\Table;
if ( ! \class_exists( '\WP_List_Table' ) ) {
require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
}
class Followers_List extends \WP_List_Table {
public function get_columns() {
return array(
'identifier' => \__( 'Identifier', 'activitypub' ),
);
}
public function get_sortable_columns() {
return array();
}
public function prepare_items() {
$columns = $this->get_columns();
$hidden = array();
$this->process_action();
$this->_column_headers = array( $columns, $hidden, $this->get_sortable_columns() );
$this->items = array();
foreach ( \Activitypub\Peer\Followers::get_followers( \get_current_user_id() ) as $follower ) {
$this->items[]['identifier'] = \esc_attr( $follower );
}
}
public function column_default( $item, $column_name ) {
return $item[ $column_name ];
}
}

9
readme.txt
View file

@ -2,7 +2,7 @@
Contributors: pfefferle, mediaformat, akirk, automattic
Tags: OStatus, fediverse, activitypub, activitystream
Requires at least: 4.7
Tested up to: 6.1
Tested up to: 6.2
Stable tag: 0.17.0
Requires PHP: 5.6
License: MIT
@ -111,7 +111,12 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
== Changelog ==
Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
Project maintained on GitHub at [automattic/wordpress-activitypub](https://github.com/automattic/wordpress-activitypub).
= Next =
* Compatibility: add hooks to allow modifying images returned in ActivityPub requests.
* Compatibility: indicate that the plugin is compatible and has been tested with the latest version of WordPress, 6.2.
= 0.17.0 =

2
templates/author-json.php
View file

@ -8,7 +8,7 @@ $json->id = \get_author_posts_url( $author_id );
$json->type = 'Person';
$json->name = \get_the_author_meta( 'display_name', $author_id );
$json->summary = \html_entity_decode(
\get_the_author_meta( 'description', $author_id ),
\Activitypub\get_author_description( $author_id ),
\ENT_QUOTES,
'UTF-8'
);

9
templates/followers-list.php
View file

@ -1,16 +1,17 @@
<div class="wrap">
<h1><?php \esc_html_e( 'Followers (Fediverse)', 'activitypub' ); ?></h1>
<h1><?php \esc_html_e( 'Followers', 'activitypub' ); ?></h1>
<?php // translators: ?>
<p><?php \printf( \esc_html__( 'You currently have %s followers.', 'activitypub' ), \esc_attr( \Activitypub\Peer\Followers::count_followers( \get_current_user_id() ) ) ); ?></p>
<p><?php \printf( \esc_html__( 'You currently have %s followers.', 'activitypub' ), \esc_attr( \Activitypub\Collection\Followers::count_followers( \get_current_user_id() ) ) ); ?></p>
<?php $token_table = new \Activitypub\Table\Followers_List(); ?>
<?php $token_table = new \Activitypub\Table\Followers(); ?>
<form method="get">
<input type="hidden" name="page" value="indieauth_user_token" />
<input type="hidden" name="page" value="activitypub-followers-list" />
<?php
$token_table->prepare_items();
$token_table->display();
?>
<?php wp_nonce_field( 'activitypub-followers-list', '_apnonce' ); ?>
</form>
</div>

29
templates/user-settings.php Normal file
View file

@ -0,0 +1,29 @@
<h2 id="activitypub"><?php \esc_html_e( 'ActivityPub', 'activitypub' ); ?></h2>
<table class="form-table">
<tbody>
<tr>
<th scope="row">
<label><?php \esc_html_e( 'Profile identifier', 'activitypub' ); ?></label>
</th>
<td>
<p>
<code><?php echo \esc_html( \Activitypub\get_webfinger_resource( \get_current_user_id() ) ); ?></code> or
<code><?php echo \esc_url( \get_author_posts_url( \get_current_user_id() ) ); ?></code>
</p>
<?php // translators: the webfinger resource ?>
<p class="description"><?php \printf( \esc_html__( 'Try to follow "@%s" by searching for it on Mastodon,Friendica & Co.', 'activitypub' ), \esc_html( \Activitypub\get_webfinger_resource( \get_current_user_id() ) ) ); ?></p>
</td>
</tr>
<tr class="activitypub-user-description-wrap">
<th>
<label for="activitypub-user-description"><?php \esc_html_e( 'Biography', 'activitypub' ); ?></label>
</th>
<td>
<textarea name="activitypub-user-description" id="activitypub-user-description" rows="5" cols="30" placeholder="<?php echo \esc_html( get_user_meta( \get_current_user_id(), 'description', true ) ); ?>"><?php echo \esc_html( $args['description'] ); ?></textarea>
<p class="description"><?php \esc_html_e( 'If you wish to use different biographical info for the fediverse, enter your alternate bio here.', 'activitypub' ); ?></p>
</td>
<?php wp_nonce_field( 'activitypub-user-description', '_apnonce' ); ?>
</tr>
</tbody>
</table>

7
tests/test-class-activitypub-activity-dispatcher.php
View file

@ -5,17 +5,22 @@ class Test_Activitypub_Activity_Dispatcher extends ActivityPub_TestCase_Cache_HT
'url' => 'https://example.org/users/username',
'inbox' => 'https://example.org/users/username/inbox',
'name' => 'username',
'prefferedUsername' => 'username',
),
'jon@example.com' => array(
'url' => 'https://example.com/author/jon',
'inbox' => 'https://example.com/author/jon/inbox',
'name' => 'jon',
'prefferedUsername' => 'jon',
),
);
public function test_dispatch_activity() {
$followers = array( 'https://example.com/author/jon', 'https://example.org/users/username' );
\update_user_meta( 1, 'activitypub_followers', $followers );
foreach ( $followers as $follower ) {
\Activitypub\Collection\Followers::add_follower( 1, $follower );
}
$post = \wp_insert_post(
array(

1
tests/test-class-activitypub-mention.php
View file

@ -31,6 +31,7 @@ ENDPRE;
array( 'hallo <a rel="mention" class="u-url mention" href="https://notiz.blog/author/matthias-pfefferle/">@<span>pfefferle</span>@notiz.blog</a> test', 'hallo <a rel="mention" class="u-url mention" href="https://notiz.blog/author/matthias-pfefferle/">@<span>pfefferle</span>@notiz.blog</a> test' ),
array( 'hallo <a rel="mention" class="u-url mention" href="https://notiz.blog/author/matthias-pfefferle/">@pfefferle@notiz.blog</a> test', 'hallo <a rel="mention" class="u-url mention" href="https://notiz.blog/author/matthias-pfefferle/">@pfefferle@notiz.blog</a> test' ),
array( 'hallo <a rel="mention" class="u-url mention" href="https://notiz.blog/@pfefferle/">@pfefferle@notiz.blog</a> test', 'hallo <a rel="mention" class="u-url mention" href="https://notiz.blog/@pfefferle/">@pfefferle@notiz.blog</a> test' ),
array( 'hallo <img src="abc" alt="https://notiz.blog/@pfefferle/" title="@pfefferle@notiz.blog"/> test', 'hallo <img src="abc" alt="https://notiz.blog/@pfefferle/" title="@pfefferle@notiz.blog"/> test' ),
array( $code, $code ),
array( $pre, $pre ),
);

128
tests/test-class-db-activitypub-followers.php
View file

@ -1,15 +1,60 @@
<?php
class Test_Db_Activitypub_Followers extends WP_UnitTestCase {
public function test_get_followers() {
$followers = array( 'https://example.com/author/jon', 'https://example.org/author/doe' );
$followers[] = array(
'type' => 'Person',
'id' => 'http://sally.example.org',
'name' => 'Sally Smith',
public static $users = array(
'username@example.org' => array(
'url' => 'https://example.org/users/username',
'inbox' => 'https://example.org/users/username/inbox',
'name' => 'username',
'prefferedUsername' => 'username',
),
'jon@example.com' => array(
'url' => 'https://example.com/author/jon',
'inbox' => 'https://example.com/author/jon/inbox',
'name' => 'jon',
'prefferedUsername' => 'jon',
),
'doe@example.org' => array(
'url' => 'https://example.org/author/doe',
'inbox' => 'https://example.org/author/doe/inbox',
'name' => 'doe',
'prefferedUsername' => 'doe',
),
'sally@example.org' => array(
'url' => 'http://sally.example.org',
'inbox' => 'http://sally.example.org/inbox',
'name' => 'jon',
'prefferedUsername' => 'jon',
),
'12345@example.com' => array(
'url' => 'https://12345.example.com',
'inbox' => 'https://12345.example.com/inbox',
'name' => '12345',
'prefferedUsername' => '12345',
),
);
\update_user_meta( 1, 'activitypub_followers', $followers );
$db_followers = \Activitypub\Peer\Followers::get_followers( 1 );
public function set_up() {
parent::set_up();
add_filter( 'pre_get_remote_metadata_by_actor', array( get_called_class(), 'pre_get_remote_metadata_by_actor' ), 10, 2 );
_delete_all_posts();
}
public function tear_down() {
remove_filter( 'pre_get_remote_metadata_by_actor', array( get_called_class(), 'pre_get_remote_metadata_by_actor' ) );
parent::tear_down();
}
public function test_get_followers() {
$followers = array( 'https://example.com/author/jon', 'https://example.org/author/doe', 'http://sally.example.org' );
$pre_http_request = new MockAction();
add_filter( 'pre_http_request', array( $pre_http_request, 'filter' ), 10, 3 );
foreach ( $followers as $follower ) {
$response = \Activitypub\Collection\Followers::add_follower( 1, $follower );
}
$db_followers = \Activitypub\Collection\Followers::get_followers( 1 );
$this->assertEquals( 3, \count( $db_followers ) );
@ -17,11 +62,72 @@ class Test_Db_Activitypub_Followers extends WP_UnitTestCase {
}
public function test_add_follower() {
$follower = 'https://example.com/author/' . \time();
\Activitypub\Peer\Followers::add_follower( $follower, 1 );
$pre_http_request = new MockAction();
add_filter( 'pre_http_request', array( $pre_http_request, 'filter' ), 10, 3 );
$db_followers = \Activitypub\Peer\Followers::get_followers( 1 );
$follower = 'https://12345.example.com';
\Activitypub\Collection\Followers::add_follower( 1, $follower );
$db_followers = \Activitypub\Collection\Followers::get_followers( 1 );
$this->assertContains( $follower, $db_followers );
}
public function test_get_follower() {
$followers = array( 'https://example.com/author/jon' );
$pre_http_request = new MockAction();
add_filter( 'pre_http_request', array( $pre_http_request, 'filter' ), 10, 3 );
foreach ( $followers as $follower ) {
\Activitypub\Collection\Followers::add_follower( 1, $follower );
}
$follower = \Activitypub\Collection\Followers::get_follower( 1, 'https://example.com/author/jon' );
$this->assertEquals( 'https://example.com/author/jon', $follower->get_actor() );
$follower = \Activitypub\Collection\Followers::get_follower( 1, 'http://sally.example.org' );
$this->assertNull( $follower );
}
public static function http_request_host_is_external( $in, $host ) {
if ( in_array( $host, array( 'example.com', 'example.org' ), true ) ) {
return true;
}
return $in;
}
public static function http_request_args( $args, $url ) {
if ( in_array( wp_parse_url( $url, PHP_URL_HOST ), array( 'example.com', 'example.org' ), true ) ) {
$args['reject_unsafe_urls'] = false;
}
return $args;
}
public static function pre_http_request( $preempt, $request, $url ) {
return array(
'headers' => array(
'content-type' => 'text/json',
),
'body' => '',
'response' => array(
'code' => 202,
),
);
}
public static function http_response( $response, $args, $url ) {
return $response;
}
public static function pre_get_remote_metadata_by_actor( $pre, $actor ) {
if ( isset( self::$users[ $actor ] ) ) {
return self::$users[ $actor ];
}
foreach ( self::$users as $username => $data ) {
if ( $data['url'] === $actor ) {
return $data;
}
}
return $pre;
}
}