/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
 * 
 * You can redistribute this program and/or modify it under the terms of
 * the GNU Lesser Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 */
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using SMBLibrary.SMB1;
using Utilities;

namespace SMBLibrary.Server.SMB1
{
    internal partial class ServerResponseHelper
    {
        internal static SMB1Command GetCloseResponse(SMB1Header header, CloseRequest request, ISMBShare share, SMB1ConnectionState state)
        {
            SMB1Session session = state.GetSession(header.UID);
            OpenFileObject openFile = session.GetOpenFileObject(request.FID);
            if (openFile == null)
            {
                header.Status = NTStatus.STATUS_SMB_BAD_FID;
                return new ErrorResponse(request.CommandName);
            }

            state.LogToServer(Severity.Information, "Close: Closing '{0}{1}'", share.Name, openFile.Path);
            header.Status = share.FileStore.CloseFile(openFile.Handle);
            if (header.Status != NTStatus.STATUS_SUCCESS)
            {
                return new ErrorResponse(request.CommandName);
            }

            session.RemoveOpenFile(request.FID);
            return new CloseResponse();
        }

        internal static SMB1Command GetFindClose2Request(SMB1Header header, FindClose2Request request, SMB1ConnectionState state)
        {
            SMB1Session session = state.GetSession(header.UID);
            session.RemoveOpenSearch(request.SearchHandle);
            return new FindClose2Response();
        }

        internal static List<SMB1Command> GetEchoResponse(EchoRequest request)
        {
            List<SMB1Command> response = new List<SMB1Command>();
            for (int index = 0; index < request.EchoCount; index++)
            {
                EchoResponse echo = new EchoResponse();
                echo.SequenceNumber = (ushort)index;
                echo.SMBData = request.SMBData;
                response.Add(echo);
            }
            return response;
        }
    }
}