Skip images uploaded to Guest Author profiles in Jetpack Sitemaps

[douglas-johnson]

We have experienced this issue on Thought Catalog and Creepy Catalog where Jetpack image sitemaps produce URLs like /?post_type=guest-author&p=000 which link to non-public pages. The issue is that the image was uploaded to a Guest Author profile.

Example from Creepy Catalog:

We solved it like this on Thought Catalog, but we need to solution on multiple sites using CAP.

/**
 * Jetpack Sitemap Image Skip Avatars
 * 
 * @param bool $skip
 * @param stdClass|WP_Post $post
 * @return bool
 */
public static function jetpack_sitemap_image_skip_avatars( bool $skip, $post ) : bool {
  if ( ! is_object( $post ) || ! property_exists( $post, 'post_parent' ) ) {
      return $skip;
  }

  $parent_id = absint( $post->post_parent );

  if ( 0 === $parent_id ) {
      return $skip;
  }

  if ( 'guest-author' === get_post_type( $parent_id ) ) {
      return true;
  }

  return $skip;
}