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430 lines
14 KiB
C#
430 lines
14 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : DiscFerret.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disc image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Manages DiscFerret disk images.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2017 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.Filters;
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namespace DiscImageChef.ImagePlugins
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{
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public class DiscFerret : ImagePlugin
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{
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#region Internal Structures
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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public struct DfiBlockHeader
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{
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public ushort cylinder;
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public ushort head;
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public ushort sector;
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public uint length;
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}
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#endregion Internal Structures
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#region Internal Constants
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/// <summary>
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/// "DFER"
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/// </summary>
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const uint DfiMagic = 0x52454644;
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/// <summary>
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/// "DFE2"
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/// </summary>
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const uint DfiMagic2 = 0x32454644;
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#endregion Internal Constants
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#region Internal variables
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// TODO: These variables have been made public so create-sidecar can access to this information until I define an API >4.0
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public SortedDictionary<int, long> trackOffsets;
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public SortedDictionary<int, long> trackLengths;
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#endregion Internal variables
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public DiscFerret()
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{
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Name = "DiscFerret";
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PluginUUID = new Guid("70EA7B9B-5323-42EB-9B40-8DDA37C5EB4D");
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ImageInfo = new ImageInfo()
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{
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readableSectorTags = new List<SectorTagType>(),
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readableMediaTags = new List<MediaTagType>(),
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imageHasPartitions = false,
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imageHasSessions = false,
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imageVersion = null,
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imageApplication = null,
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imageApplicationVersion = null,
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imageCreator = null,
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imageComments = null,
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mediaManufacturer = null,
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mediaModel = null,
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mediaSerialNumber = null,
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mediaBarcode = null,
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mediaPartNumber = null,
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mediaSequence = 0,
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lastMediaSequence = 0,
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driveManufacturer = null,
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driveModel = null,
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driveSerialNumber = null,
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driveFirmwareRevision = null
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};
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}
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#region Public methods
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public override bool IdentifyImage(Filter imageFilter)
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{
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byte[] magic_b = new byte[4];
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Stream stream = imageFilter.GetDataForkStream();
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stream.Read(magic_b, 0, 4);
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uint magic = BitConverter.ToUInt32(magic_b, 0);
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return magic == DfiMagic || magic == DfiMagic2;
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}
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public override bool OpenImage(Filter imageFilter)
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{
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byte[] magic_b = new byte[4];
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Stream stream = imageFilter.GetDataForkStream();
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stream.Read(magic_b, 0, 4);
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uint magic = BitConverter.ToUInt32(magic_b, 0);
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if(magic != DfiMagic && magic != DfiMagic2) return false;
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trackOffsets = new SortedDictionary<int, long>();
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trackLengths = new SortedDictionary<int, long>();
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int t = -1;
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ushort lastCylinder = 0, lastHead = 0;
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bool endOfTrack = false;
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long offset = 0;
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while(stream.Position < stream.Length)
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{
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long thisOffset = stream.Position;
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DfiBlockHeader blockHeader = new DfiBlockHeader();
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byte[] blk = new byte[Marshal.SizeOf(blockHeader)];
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stream.Read(blk, 0, Marshal.SizeOf(blockHeader));
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blockHeader = BigEndianMarshal.ByteArrayToStructureBigEndian<DfiBlockHeader>(blk);
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DicConsole.DebugWriteLine("DiscFerret plugin", "block@{0}.cylinder = {1}", thisOffset,
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blockHeader.cylinder);
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DicConsole.DebugWriteLine("DiscFerret plugin", "block@{0}.head = {1}", thisOffset, blockHeader.head);
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DicConsole.DebugWriteLine("DiscFerret plugin", "block@{0}.sector = {1}", thisOffset,
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blockHeader.sector);
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DicConsole.DebugWriteLine("DiscFerret plugin", "block@{0}.length = {1}", thisOffset,
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blockHeader.length);
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if(stream.Position + blockHeader.length > stream.Length)
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{
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DicConsole.DebugWriteLine("DiscFerret plugin", "Invalid track block found at {0}", thisOffset);
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break;
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}
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stream.Position += blockHeader.length;
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if(blockHeader.cylinder > 0 && blockHeader.cylinder > lastCylinder)
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{
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lastCylinder = blockHeader.cylinder;
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lastHead = 0;
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trackOffsets.Add(t, offset);
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trackLengths.Add(t, thisOffset - offset + 1);
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offset = thisOffset;
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t++;
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}
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else if(blockHeader.head > 0 && blockHeader.head > lastHead)
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{
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lastHead = blockHeader.head;
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trackOffsets.Add(t, offset);
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trackLengths.Add(t, thisOffset - offset + 1);
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offset = thisOffset;
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t++;
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}
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if(blockHeader.cylinder > ImageInfo.cylinders)
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ImageInfo.cylinders = blockHeader.cylinder;
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if(blockHeader.head> ImageInfo.heads)
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ImageInfo.heads= blockHeader.head;
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}
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ImageInfo.heads++;
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ImageInfo.cylinders++;
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ImageInfo.imageApplication = "DiscFerret";
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if(magic == DfiMagic2)
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ImageInfo.imageApplicationVersion = "2.0";
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else
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ImageInfo.imageApplicationVersion = "1.0";
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override bool ImageHasPartitions()
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{
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return ImageInfo.imageHasPartitions;
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}
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public override ulong GetImageSize()
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{
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return ImageInfo.imageSize;
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}
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public override ulong GetSectors()
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{
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return ImageInfo.sectors;
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}
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public override uint GetSectorSize()
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{
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return ImageInfo.sectorSize;
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}
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public override byte[] ReadDiskTag(MediaTagType tag)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override byte[] ReadSector(ulong sectorAddress)
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{
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return ReadSectors(sectorAddress, 1);
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}
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public override byte[] ReadSectorTag(ulong sectorAddress, SectorTagType tag)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override byte[] ReadSectors(ulong sectorAddress, uint length)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, SectorTagType tag)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override byte[] ReadSectorLong(ulong sectorAddress)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override byte[] ReadSectorLong(ulong sectorAddress, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorsLong(ulong sectorAddress, uint length)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override string GetImageFormat()
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{
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return "DiscFerret";
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}
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public override string GetImageVersion()
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{
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return ImageInfo.imageVersion;
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}
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public override string GetImageApplication()
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{
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return ImageInfo.imageApplication;
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}
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public override string GetImageApplicationVersion()
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{
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return ImageInfo.imageApplicationVersion;
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}
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public override string GetImageCreator()
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{
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return ImageInfo.imageCreator;
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}
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public override DateTime GetImageCreationTime()
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{
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return ImageInfo.imageCreationTime;
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}
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public override DateTime GetImageLastModificationTime()
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{
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return ImageInfo.imageLastModificationTime;
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}
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public override string GetImageName()
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{
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return ImageInfo.imageName;
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}
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public override string GetImageComments()
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{
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return ImageInfo.imageComments;
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}
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public override string GetMediaManufacturer()
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{
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return ImageInfo.mediaManufacturer;
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}
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public override string GetMediaModel()
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{
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return ImageInfo.mediaModel;
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}
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public override string GetMediaSerialNumber()
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{
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return ImageInfo.mediaSerialNumber;
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}
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public override string GetMediaBarcode()
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{
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return ImageInfo.mediaBarcode;
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}
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public override string GetMediaPartNumber()
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{
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return ImageInfo.mediaPartNumber;
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}
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public override MediaType GetMediaType()
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{
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return ImageInfo.mediaType;
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}
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public override int GetMediaSequence()
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{
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return ImageInfo.mediaSequence;
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}
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public override int GetLastDiskSequence()
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{
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return ImageInfo.lastMediaSequence;
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}
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public override string GetDriveManufacturer()
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{
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return ImageInfo.driveManufacturer;
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}
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public override string GetDriveModel()
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{
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return ImageInfo.driveModel;
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}
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public override string GetDriveSerialNumber()
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{
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return ImageInfo.driveSerialNumber;
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}
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public override bool? VerifySector(ulong sectorAddress)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public override bool? VerifySectors(ulong sectorAddress, uint length, out List<ulong> FailingLBAs, out List<ulong> UnknownLBAs)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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#endregion Public methods
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#region Unsupported features
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public override byte[] ReadSector(ulong sectorAddress, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorTag(ulong sectorAddress, uint track, SectorTagType tag)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectors(ulong sectorAddress, uint length, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, uint track, SectorTagType tag)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorsLong(ulong sectorAddress, uint length, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Partition> GetPartitions()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Track> GetTracks()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Track> GetSessionTracks(Session session)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Track> GetSessionTracks(ushort session)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Session> GetSessions()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override bool? VerifySector(ulong sectorAddress, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override bool? VerifySectors(ulong sectorAddress, uint length, uint track, out List<ulong> FailingLBAs, out List<ulong> UnknownLBAs)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override bool? VerifyMediaImage()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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#endregion Unsupported features
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}
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} |