Automattic / jetpack

	 *

	 * @return string|int Returns the ID of the connection owner or False if no connection owner found.

	 */

	public function get_connection_owner_id() {

		$user_token       = $this->get_access_token( JETPACK_MASTER_USER );

		$connection_owner = false;

		if ( $user_token && is_object( $user_token ) && isset( $user_token->external_user_id ) ) {

			$connection_owner = $user_token->external_user_id;

		}

		return $connection_owner;

	}

	/**

	 * Returns an array of user_id's that have user tokens for communicating with wpcom.

	 *

	 * @return object|false False if no connection owner found.

	 */

	public function get_connection_owner() {

		$user_token = $this->get_access_token( JETPACK_MASTER_USER );

		$connection_owner = false;

		if ( $user_token && is_object( $user_token ) && isset( $user_token->external_user_id ) ) {

			$connection_owner = get_userdata( $user_token->external_user_id );

		}

		return $connection_owner;

	}

	/**

	 * Returns true if the provided user is the Jetpack connection owner.

	 * @param Integer|Boolean $user_id the user identifier. False for current user.

	 * @return Boolean True the user the connection owner, false otherwise.

	 */

	public function is_connection_owner( $user_id = false ) {

		if ( ! $user_id ) {

			$user_id = get_current_user_id();

		}

		$user_token = $this->get_access_token( JETPACK_MASTER_USER );

		return $user_token && is_object( $user_token ) && isset( $user_token->external_user_id ) && $user_id === $user_token->external_user_id;

	}

	/**

	 * Unlinks the current user from the linked WordPress.com user.