/* Copyright (C) 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 Utilities;

namespace SMBLibrary
{
    /// <summary>
    /// [MS-FSCC] 2.4.12 - FileNetworkOpenInformation
    /// </summary>
    public class FileNetworkOpenInformation : FileInformation
    {
        public const int FixedLength = 56;

        public DateTime? CreationTime;
        public DateTime? LastAccessTime;
        public DateTime? LastWriteTime;
        public DateTime? ChangeTime;
        public ulong AllocationSize;
        public ulong EndOfFile;
        public FileAttributes FileAttributes;
        public uint Reserved;

        public FileNetworkOpenInformation()
        {
        }

        public FileNetworkOpenInformation(byte[] buffer, int offset)
        {
            CreationTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + 0);
            LastAccessTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + 8);
            LastWriteTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + 16);
            ChangeTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + 24);
            AllocationSize = LittleEndianConverter.ToUInt64(buffer, offset + 32);
            EndOfFile = LittleEndianConverter.ToUInt64(buffer, offset + 40);
            FileAttributes = (FileAttributes)LittleEndianConverter.ToUInt32(buffer, offset + 48);
            Reserved = LittleEndianConverter.ToUInt32(buffer, offset + 52);
        }

        public override void WriteBytes(byte[] buffer, int offset)
        {
            FileTimeHelper.WriteFileTime(buffer, offset + 0, CreationTime);
            FileTimeHelper.WriteFileTime(buffer, offset + 8, LastAccessTime);
            FileTimeHelper.WriteFileTime(buffer, offset + 16, LastWriteTime);
            FileTimeHelper.WriteFileTime(buffer, offset + 24, ChangeTime);
            LittleEndianWriter.WriteUInt64(buffer, offset + 32, AllocationSize);
            LittleEndianWriter.WriteUInt64(buffer, offset + 40, EndOfFile);
            LittleEndianWriter.WriteUInt32(buffer, offset + 48, (uint)FileAttributes);
            LittleEndianWriter.WriteUInt32(buffer, offset + 52, Reserved);
        }

        public override FileInformationClass FileInformationClass
        {
            get
            {
                return FileInformationClass.FileNetworkOpenInformation;
            }
        }

        public override int Length
        {
            get
            {
                return FixedLength;
            }
        }
    }
}