Method query

src/jrd/svc.cpp:1556–1937

void Service::query(USHORT			send_item_length,
					const UCHAR*	send_items,
					USHORT			recv_item_length,
					const UCHAR*	recv_items,
					USHORT			buffer_length,
					UCHAR*			info)
{
	ExistenceGuard guard(this, FB_FUNCTION);

	if (svc_flags & SVC_detached)
	{
		// Service was already detached
		Arg::Gds(isc_bad_svc_handle).raise();
	}

	UCHAR item, *p;
	UCHAR buffer[256];
	USHORT l, length, get_flags;

	try
	{
	// Process the send portion of the query first.
	USHORT timeout = 0;
	const UCHAR* items = send_items;
	const UCHAR* const end_items = items + send_item_length;
	while (items < end_items && *items != isc_info_end)
	{
		switch ((item = *items++))
		{
		case isc_info_end:
			break;

		default:
			if (items + 2 <= end_items)
			{
				l = (USHORT) gds__vax_integer(items, 2);
				items += 2;
				if (items + l <= end_items)
				{
					switch (item)
					{
					case isc_info_svc_line:
						//put(items, l);
						break;
					case isc_info_svc_message:
						//put(items - 3, l + 3);
						break;
					case isc_info_svc_timeout:
						timeout = (USHORT) gds__vax_integer(items, l);
						break;
					case isc_info_svc_version:
						break;
					}
				}
				items += l;
			}
			else
				items += 2;