366 lines
7.8 KiB
PHP
366 lines
7.8 KiB
PHP
<?php
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namespace Activitypub\Model;
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use WP_Error;
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use WP_Query;
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use Activitypub\Activity\Actor;
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use Activitypub\Collection\Followers;
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/**
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* ActivityPub Follower Class
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*
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* This Object represents a single Follower.
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* There is no direct reference to a WordPress User here.
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*
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* @author Matt Wiebe
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* @author Matthias Pfefferle
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*
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* @see https://www.w3.org/TR/activitypub/#follow-activity-inbox
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*/
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class Follower extends Actor {
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/**
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* The complete Remote-Profile of the Follower
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*
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* @var array
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*/
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protected $_id; // phpcs:ignore PSR2.Classes.PropertyDeclaration.Underscore
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/**
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* Get the errors.
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*
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* @return mixed
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*/
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public function get_errors() {
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return get_post_meta( $this->_id, 'activitypub_errors' );
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}
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/**
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* Get the Summary.
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*
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* @return int The Summary.
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*/
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public function get_summary() {
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if ( isset( $this->summary ) ) {
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return $this->summary;
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}
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return '';
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}
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/**
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* Getter for URL attribute.
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*
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* Falls back to ID, if no URL is set. This is relevant for
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* Plattforms like Lemmy, where the ID is the URL.
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*
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* @return string The URL.
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*/
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public function get_url() {
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if ( $this->url ) {
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return $this->url;
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}
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return $this->id;
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}
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/**
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* Reset (delete) all errors.
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*
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* @return void
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*/
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public function reset_errors() {
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delete_post_meta( $this->_id, 'activitypub_errors' );
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}
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/**
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* Count the errors.
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*
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* @return int The number of errors.
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*/
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public function count_errors() {
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$errors = $this->get_errors();
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if ( is_array( $errors ) && ! empty( $errors ) ) {
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return count( $errors );
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}
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return 0;
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}
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/**
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* Return the latest error message.
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*
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* @return string The error message.
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*/
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public function get_latest_error_message() {
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$errors = $this->get_errors();
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if ( is_array( $errors ) && ! empty( $errors ) ) {
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return reset( $errors );
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}
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return '';
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}
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/**
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* Update the current Follower-Object.
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*
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* @return void
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*/
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public function update() {
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$this->save();
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}
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/**
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* Validate the current Follower-Object.
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*
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* @return boolean True if the verification was successful.
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*/
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public function is_valid() {
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// the minimum required attributes
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$required_attributes = array(
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'id',
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'preferredUsername',
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'inbox',
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'publicKey',
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'publicKeyPem',
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);
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foreach ( $required_attributes as $attribute ) {
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if ( ! $this->get( $attribute ) ) {
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return false;
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}
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}
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return true;
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}
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/**
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* Save the current Follower-Object.
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*
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* @return int|WP_Error The Post-ID or an WP_Error.
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*/
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public function save() {
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if ( ! $this->is_valid() ) {
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return new WP_Error( 'activitypub_invalid_follower', __( 'Invalid Follower', 'activitypub' ), array( 'status' => 400 ) );
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}
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if ( ! $this->get__id() ) {
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global $wpdb;
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// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
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$post_id = $wpdb->get_var(
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$wpdb->prepare(
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"SELECT ID FROM $wpdb->posts WHERE guid=%s",
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esc_sql( $this->get_id() )
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)
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);
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if ( $post_id ) {
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$post = get_post( $post_id );
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$this->set__id( $post->ID );
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}
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}
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$args = array(
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'ID' => $this->get__id(),
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'guid' => esc_url_raw( $this->get_id() ),
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'post_title' => wp_strip_all_tags( sanitize_text_field( $this->get_name() ) ),
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'post_author' => 0,
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'post_type' => Followers::POST_TYPE,
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'post_name' => esc_url_raw( $this->get_id() ),
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'post_excerpt' => sanitize_text_field( wp_kses( $this->get_summary(), 'user_description' ) ),
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'post_status' => 'publish',
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'meta_input' => $this->get_post_meta_input(),
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);
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$post_id = wp_insert_post( $args );
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$this->_id = $post_id;
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return $post_id;
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}
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/**
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* Upsert the current Follower-Object.
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*
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* @return int|WP_Error The Post-ID or an WP_Error.
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*/
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public function upsert() {
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return $this->save();
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}
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/**
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* Delete the current Follower-Object.
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*
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* Beware that this os deleting a Follower for ALL users!!!
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*
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* To delete only the User connection (unfollow)
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* @see \Activitypub\Rest\Followers::remove_follower()
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*
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* @return void
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*/
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public function delete() {
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wp_delete_post( $this->_id );
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}
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/**
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* Update the post meta.
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*
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* @return void
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*/
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protected function get_post_meta_input() {
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$meta_input = array();
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$meta_input['activitypub_inbox'] = $this->get_shared_inbox();
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$meta_input['activitypub_actor_json'] = $this->to_json();
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return $meta_input;
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}
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/**
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* Get the icon.
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*
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* Sets a fallback to better handle API and HTML outputs.
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*
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* @return array The icon.
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*/
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public function get_icon() {
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if ( isset( $this->icon['url'] ) ) {
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return $this->icon;
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}
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return array(
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'type' => 'Image',
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'mediaType' => 'image/jpeg',
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'url' => ACTIVITYPUB_PLUGIN_URL . 'assets/img/mp.jpg',
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);
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}
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/**
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* Get Name.
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*
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* Tries to extract a name from the URL or ID if not set.
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*
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* @return string The name.
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*/
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public function get_name() {
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if ( $this->name ) {
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return $this->name;
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} elseif ( $this->preferred_username ) {
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return $this->preferred_username;
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}
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return $this->extract_name_from_uri();
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}
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/**
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* The preferred Username.
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*
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* Tries to extract a name from the URL or ID if not set.
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*
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* @return string The preferred Username.
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*/
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public function get_preferred_username() {
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if ( $this->preferred_username ) {
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return $this->preferred_username;
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}
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return $this->extract_name_from_uri();
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}
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/**
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* Get the Icon URL (Avatar)
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*
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* @return string The URL to the Avatar.
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*/
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public function get_icon_url() {
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$icon = $this->get_icon();
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if ( ! $icon ) {
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return '';
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}
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if ( is_array( $icon ) ) {
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return $icon['url'];
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}
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return $icon;
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}
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/**
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* Get the shared inbox, with a fallback to the inbox.
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*
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* @return string|null The URL to the shared inbox, the inbox or null.
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*/
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public function get_shared_inbox() {
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if ( ! empty( $this->get_endpoints()['sharedInbox'] ) ) {
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return $this->get_endpoints()['sharedInbox'];
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} elseif ( ! empty( $this->get_inbox() ) ) {
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return $this->get_inbox();
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}
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return null;
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}
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/**
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* Convert a Custom-Post-Type input to an Activitypub\Model\Follower.
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*
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* @return string The JSON string.
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*
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* @return array Activitypub\Model\Follower
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*/
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public static function init_from_cpt( $post ) {
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$actor_json = get_post_meta( $post->ID, 'activitypub_actor_json', true );
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$object = self::init_from_json( $actor_json );
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$object->set__id( $post->ID );
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$object->set_id( $post->guid );
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$object->set_name( $post->post_title );
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$object->set_summary( $post->post_excerpt );
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$object->set_published( gmdate( 'Y-m-d H:i:s', strtotime( $post->post_published ) ) );
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$object->set_updated( gmdate( 'Y-m-d H:i:s', strtotime( $post->post_modified ) ) );
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return $object;
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}
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/**
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* Infer a shortname from the Actor ID or URL. Used only for fallbacks,
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* we will try to use what's supplied.
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*
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* @return string Hopefully the name of the Follower.
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*/
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protected function extract_name_from_uri() {
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// prefer the URL, but fall back to the ID.
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if ( $this->url ) {
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$name = $this->url;
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} else {
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$name = $this->id;
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}
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if ( \filter_var( $name, FILTER_VALIDATE_URL ) ) {
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$name = \rtrim( $name, '/' );
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$path = \wp_parse_url( $name, PHP_URL_PATH );
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if ( $path ) {
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if ( \strpos( $name, '@' ) !== false ) {
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// expected: https://example.com/@user (default URL pattern)
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$name = \preg_replace( '|^/@?|', '', $path );
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} else {
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// expected: https://example.com/users/user (default ID pattern)
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$parts = \explode( '/', $path );
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$name = \array_pop( $parts );
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}
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}
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} elseif (
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\is_email( $name ) ||
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\strpos( $name, 'acct' ) === 0 ||
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\strpos( $name, '@' ) === 0
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) {
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// expected: user@example.com or acct:user@example (WebFinger)
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$name = \ltrim( $name, '@' );
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$name = \ltrim( $name, 'acct:' );
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$parts = \explode( '@', $name );
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$name = $parts[0];
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}
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return $name;
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}
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}
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