wordpress-activitypub/includes/class-activitypub.php
Matthias Pfefferle 1828c88d73 fixed #30
will be released with the next version
2019-02-24 12:27:49 +01:00

161 lines
4.6 KiB
PHP

<?php
namespace Activitypub;
/**
* ActivityPub Class
*
* @author Matthias Pfefferle
*/
class Activitypub {
public static function init() {
add_filter( 'template_include', array( '\Activitypub\Activitypub', 'render_json_template' ), 99 );
add_filter( 'query_vars', array( '\Activitypub\Activitypub', 'add_query_vars' ) );
add_action( 'init', array( '\Activitypub\Activitypub', 'add_rewrite_endpoint' ) );
add_filter( 'pre_get_avatar_data', array( '\Activitypub\Activitypub', 'pre_get_avatar_data' ), 11, 2 );
add_post_type_support( 'post', 'activitypub' );
add_post_type_support( 'page', 'activitypub' );
$post_types = get_post_types_by_support( 'activitypub' );
add_action( 'transition_post_status', array( '\Activitypub\Activitypub', 'schedule_post_activity' ), 10, 3 );
}
/**
* Return a AS2 JSON version of an author, post or page
*
* @param string $template the path to the template object
*
* @return string the new path to the JSON template
*/
public static function render_json_template( $template ) {
if ( ! is_author() && ! is_singular() ) {
return $template;
}
if ( is_author() ) {
$json_template = dirname( __FILE__ ) . '/../templates/json-author.php';
} elseif ( is_singular() ) {
$json_template = dirname( __FILE__ ) . '/../templates/json-post.php';
}
global $wp_query;
if ( isset( $wp_query->query_vars['as2'] ) ) {
return $json_template;
}
if ( ! isset( $_SERVER['HTTP_ACCEPT'] ) ) {
return $template;
}
// interpret accept header
$pos = stripos( $_SERVER['HTTP_ACCEPT'], ';' );
if ( $pos ) {
$accept_header = substr( $_SERVER['HTTP_ACCEPT'], 0, $pos );
} else {
$accept_header = $_SERVER['HTTP_ACCEPT'];
}
// accept header as an array
$accept = explode( ',', trim( $accept_header ) );
if (
! in_array( 'application/activity+json', $accept, true ) &&
! in_array( 'application/ld+json', $accept, true ) &&
! in_array( 'application/json', $accept, true )
) {
return $template;
}
return $json_template;
}
/**
* Add the 'photos' query variable so WordPress
* won't mangle it.
*/
public static function add_query_vars( $vars ) {
$vars[] = 'as2';
return $vars;
}
/**
* Add our rewrite endpoint to permalinks and pages.
*/
public static function add_rewrite_endpoint() {
add_rewrite_endpoint( 'as2', EP_AUTHORS | EP_PERMALINK | EP_PAGES );
}
/**
* Marks the post as "no webmentions sent yet"
*
* @param int $post_id
*/
public static function schedule_post_activity( $new_status, $old_status, $post ) {
// do not send activities if post is password protected
if ( post_password_required( $post ) ) {
return;
}
if ( 'publish' === $new_status && 'publish' !== $old_status ) {
wp_schedule_single_event( time() + wp_rand( 0, 120 ), 'activitypub_send_post_activity', array( $post->ID ) );
} elseif ( 'publish' === $new_status ) {
wp_schedule_single_event( time() + wp_rand( 0, 120 ), 'activitypub_send_update_activity', array( $post->ID ) );
}
}
/**
* Replaces the default avatar
*
* @param array $args Arguments passed to get_avatar_data(), after processing.
* @param int|string|object $id_or_email A user ID, email address, or comment object
*
* @return array $args
*/
public static function pre_get_avatar_data( $args, $id_or_email ) {
if (
! $id_or_email instanceof \WP_Comment ||
! isset( $id_or_email->comment_type ) ||
$id_or_email->user_id
) {
return $args;
}
$allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) );
if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types, true ) ) {
$args['url'] = false;
/** This filter is documented in wp-includes/link-template.php */
return apply_filters( 'get_avatar_data', $args, $id_or_email );
}
// check if comment has an avatar
$avatar = self::get_avatar_url( $id_or_email->comment_ID );
if ( $avatar ) {
if ( ! isset( $args['class'] ) || ! is_array( $args['class'] ) ) {
$args['class'] = array( 'u-photo' );
} else {
$args['class'][] = 'u-photo';
$args['class'] = array_unique( $args['class'] );
}
$args['url'] = $avatar;
$args['class'][] = 'avatar-activitypub';
}
return $args;
}
/**
* Function to retrieve Avatar URL if stored in meta
*
*
* @param int|WP_Comment $comment
*
* @return string $url
*/
public static function get_avatar_url( $comment ) {
if ( is_numeric( $comment ) ) {
$comment = get_comment( $comment );
}
return get_comment_meta( $comment->comment_ID, 'avatar_url', true );
}
}