Are you looking for a little plugin to make your BuddyPress private, and restrict your social network to members only? If yes, this snippet is for you.

With this function, the non logged user who tries to access to BuddyPress social network (members directory or profile) is redirect to the BuddyPress registration.

function sqr_prevent_search_guest_user() {
if ( class_exists( 'BuddyPress' ) ) {
if (!is_user_logged_in() && (bp_is_directory() || bp_is_user())) {
wp_redirect(home_url() . '/register/');
exit;
}
}
}
add_action('template_redirect', 'sqr_prevent_search_guest_user');

The good news is that this snippet is WPML-friendly, so your French users will be redirect to the French version of the register page, etc…

Do not hesitate to use My Custom Functions plugin to insert this code in your BuddyPress install directly via your WordPress dashboard!