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299 lines
12 KiB
C#
299 lines
12 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 : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Manages DiscFerret flux 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 © 2011-2018 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.IO;
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using System.Runtime.InteropServices;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Exceptions;
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using DiscImageChef.CommonTypes.Interfaces;
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using DiscImageChef.CommonTypes.Structs;
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using DiscImageChef.Console;
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using Schemas;
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namespace DiscImageChef.DiscImages
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{
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public class DiscFerret : IMediaImage
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{
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/// <summary>
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/// "DFER"
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/// </summary>
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const uint DFI_MAGIC = 0x52454644;
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/// <summary>
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/// "DFE2"
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/// </summary>
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const uint DFI_MAGIC2 = 0x32454644;
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ImageInfo imageInfo;
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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> TrackLengths;
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public SortedDictionary<int, long> TrackOffsets;
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public DiscFerret()
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{
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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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HasPartitions = false,
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HasSessions = false,
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Version = null,
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Application = null,
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ApplicationVersion = null,
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Creator = null,
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Comments = 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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public string Name => "DiscFerret";
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public Guid Id => new Guid("70EA7B9B-5323-42EB-9B40-8DDA37C5EB4D");
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public ImageInfo Info => imageInfo;
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public string Format => "DiscFerret";
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public List<Partition> Partitions =>
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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public List<Track> Tracks =>
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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public List<Session> Sessions =>
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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public bool Identify(IFilter imageFilter)
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{
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byte[] magicB = new byte[4];
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Stream stream = imageFilter.GetDataForkStream();
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stream.Read(magicB, 0, 4);
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uint magic = BitConverter.ToUInt32(magicB, 0);
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return magic == DFI_MAGIC || magic == DFI_MAGIC2;
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}
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public bool Open(IFilter imageFilter)
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{
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byte[] magicB = new byte[4];
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Stream stream = imageFilter.GetDataForkStream();
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stream.Read(magicB, 0, 4);
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uint magic = BitConverter.ToUInt32(magicB, 0);
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if(magic != DFI_MAGIC && magic != DFI_MAGIC2) 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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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) imageInfo.Cylinders = blockHeader.cylinder;
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if(blockHeader.head > imageInfo.Heads) 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.Application = "DiscFerret";
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imageInfo.ApplicationVersion = magic == DFI_MAGIC2 ? "2.0" : "1.0";
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public 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 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 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 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 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 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 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 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 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 bool? VerifySectors(ulong sectorAddress, uint length, out List<ulong> failingLbas,
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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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public 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 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 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 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 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 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 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 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 bool? VerifySectors(ulong sectorAddress, uint length, uint track, out List<ulong> failingLbas,
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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 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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public List<DumpHardwareType> DumpHardware => null;
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public CICMMetadataType CicmMetadata => null;
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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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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}
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} |