CCalendarSync::GetUserSyncInfo

static function GetUserSyncInfo($userId)
{
	require_once ($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/dav/classes/mysql/connection.php');
	require_once ($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/dav/classes/general/dav.php');
	$connectionList = [];
	$davConnections = CDavConnection::GetList(
		["ID" => "ASC"],
		[
			'ENTITY_ID' => $userId,
			'IS_DELETED' => 'N',
		],
	);

	while($connection = $davConnections->fetch())
	{
		$connectionList[] = $connection;
	}

	return $connectionList;
}