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590 lines
22 KiB
C#
590 lines
22 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : RsIde.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 RS-IDE 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 © 2011-2018 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.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.Filters;
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using static DiscImageChef.Decoders.ATA.Identify;
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namespace DiscImageChef.DiscImages
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{
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public class RsIde : IWritableImage
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{
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readonly byte[] signature = {0x52, 0x53, 0x2D, 0x49, 0x44, 0x45, 0x1A};
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ushort dataOff;
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byte[] identify;
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ImageInfo imageInfo;
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IFilter rsIdeImageFilter;
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FileStream writingStream;
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public RsIde()
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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 => "RS-IDE Hard Disk Image";
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public Guid Id => new Guid("47C3E78D-2BE2-4BA5-AA6B-FEE27C86FC65");
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public ImageInfo Info => imageInfo;
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public string Format => "RS-IDE disk image";
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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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Stream stream = imageFilter.GetDataForkStream();
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stream.Seek(0, SeekOrigin.Begin);
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byte[] magic = new byte[7];
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stream.Read(magic, 0, magic.Length);
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return magic.SequenceEqual(signature);
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}
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public bool Open(IFilter imageFilter)
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{
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Stream stream = imageFilter.GetDataForkStream();
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stream.Seek(0, SeekOrigin.Begin);
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byte[] hdrB = new byte[Marshal.SizeOf(typeof(RsIdeHeader))];
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stream.Read(hdrB, 0, hdrB.Length);
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IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(RsIdeHeader)));
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Marshal.Copy(hdrB, 0, hdrPtr, Marshal.SizeOf(typeof(RsIdeHeader)));
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RsIdeHeader hdr = (RsIdeHeader)Marshal.PtrToStructure(hdrPtr, typeof(RsIdeHeader));
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Marshal.FreeHGlobal(hdrPtr);
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if(!hdr.magic.SequenceEqual(signature)) return false;
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dataOff = hdr.dataOff;
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imageInfo.MediaType = MediaType.GENERIC_HDD;
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imageInfo.SectorSize = (uint)(hdr.flags.HasFlag(RsIdeFlags.HalfSectors) ? 256 : 512);
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imageInfo.ImageSize = (ulong)(stream.Length - dataOff);
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imageInfo.Sectors = imageInfo.ImageSize / imageInfo.SectorSize;
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imageInfo.CreationTime = imageFilter.GetCreationTime();
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imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
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imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
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imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
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imageInfo.Version = $"{hdr.revision >> 8}.{hdr.revision & 0x0F}";
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if(!ArrayHelpers.ArrayIsNullOrEmpty(hdr.identify))
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{
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identify = new byte[512];
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Array.Copy(hdr.identify, 0, identify, 0, hdr.identify.Length);
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IdentifyDevice? ataId = Decode(identify);
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if(ataId.HasValue)
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{
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imageInfo.ReadableMediaTags.Add(MediaTagType.ATA_IDENTIFY);
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imageInfo.Cylinders = ataId.Value.Cylinders;
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imageInfo.Heads = ataId.Value.Heads;
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imageInfo.SectorsPerTrack = ataId.Value.SectorsPerCard;
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imageInfo.DriveFirmwareRevision = ataId.Value.FirmwareRevision;
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imageInfo.DriveModel = ataId.Value.Model;
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imageInfo.DriveSerialNumber = ataId.Value.SerialNumber;
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imageInfo.MediaSerialNumber = ataId.Value.MediaSerial;
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imageInfo.MediaManufacturer = ataId.Value.MediaManufacturer;
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}
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}
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if(imageInfo.Cylinders == 0 || imageInfo.Heads == 0 || imageInfo.SectorsPerTrack == 0)
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{
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imageInfo.Cylinders = (uint)(imageInfo.Sectors / 16 / 63);
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imageInfo.Heads = 16;
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imageInfo.SectorsPerTrack = 63;
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}
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rsIdeImageFilter = imageFilter;
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return true;
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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[] ReadSectors(ulong sectorAddress, uint length)
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{
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if(sectorAddress > imageInfo.Sectors - 1)
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throw new ArgumentOutOfRangeException(nameof(sectorAddress), "Sector address not found");
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if(sectorAddress + length > imageInfo.Sectors)
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throw new ArgumentOutOfRangeException(nameof(length), "Requested more sectors than available");
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byte[] buffer = new byte[length * imageInfo.SectorSize];
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Stream stream = rsIdeImageFilter.GetDataForkStream();
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stream.Seek((long)(dataOff + sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
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stream.Read(buffer, 0, (int)(length * imageInfo.SectorSize));
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return buffer;
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}
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public byte[] ReadDiskTag(MediaTagType tag)
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{
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if(!imageInfo.ReadableMediaTags.Contains(tag) || tag != MediaTagType.ATA_IDENTIFY)
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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byte[] buffer = new byte[512];
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Array.Copy(identify, 0, buffer, 0, 512);
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return buffer;
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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 FeatureUnsupportedImageException("Feature not supported by image format");
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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[] ReadSectorsTag(ulong sectorAddress, uint length, 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[] ReadSectorLong(ulong sectorAddress)
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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[] 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 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)
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{
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return null;
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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, out List<ulong> failingLbas,
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out List<ulong> unknownLbas)
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{
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failingLbas = new List<ulong>();
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unknownLbas = new List<ulong>();
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for(ulong i = 0; i < imageInfo.Sectors; i++) unknownLbas.Add(i);
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return null;
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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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return null;
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}
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public IEnumerable<MediaTagType> SupportedMediaTags =>
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new[] {MediaTagType.ATA_IDENTIFY};
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public IEnumerable<SectorTagType> SupportedSectorTags => new SectorTagType[] { };
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public IEnumerable<MediaType> SupportedMediaTypes =>
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new[] {MediaType.GENERIC_HDD, MediaType.Unknown};
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public IEnumerable<(string name, Type type, string description)> SupportedOptions =>
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new (string name, Type type, string description)[] { };
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public IEnumerable<string> KnownExtensions => new[] {".ide"};
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public bool IsWriting { get; private set; }
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public string ErrorMessage { get; private set; }
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public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
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uint sectorSize)
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{
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if(sectorSize != 256 && sectorSize != 512)
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{
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ErrorMessage = "Unsupported sector size";
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return false;
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}
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if(sectors > ushort.MaxValue)
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{
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ErrorMessage = $"Too many sectors";
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return false;
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}
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if(!SupportedMediaTypes.Contains(mediaType))
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{
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ErrorMessage = $"Unsupport media format {mediaType}";
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return false;
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}
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imageInfo = new ImageInfo {MediaType = mediaType, SectorSize = sectorSize, Sectors = sectors};
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try { writingStream = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None); }
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catch(IOException e)
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{
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ErrorMessage = $"Could not create new image file, exception {e.Message}";
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return false;
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}
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IsWriting = true;
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ErrorMessage = null;
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return true;
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}
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public bool WriteMediaTag(byte[] data, MediaTagType tag)
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{
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if(tag != MediaTagType.ATA_IDENTIFY)
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{
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ErrorMessage = $"Unsupported media tag {tag}.";
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return false;
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}
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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return false;
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}
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identify = new byte[106];
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Array.Copy(data, 0, identify, 0, 106);
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return true;
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}
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public bool WriteSector(byte[] data, ulong sectorAddress)
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{
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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return false;
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}
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if(data.Length != imageInfo.SectorSize)
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{
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ErrorMessage = "Incorrect data size";
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return false;
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}
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if(sectorAddress >= imageInfo.Sectors)
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{
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ErrorMessage = "Tried to write past image size";
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return false;
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}
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writingStream
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.Seek((long)((ulong)Marshal.SizeOf(typeof(RsIdeHeader)) + sectorAddress * imageInfo.SectorSize),
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SeekOrigin.Begin);
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writingStream.Write(data, 0, data.Length);
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ErrorMessage = "";
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return true;
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}
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public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
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{
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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return false;
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}
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if(data.Length % imageInfo.SectorSize != 0)
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{
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ErrorMessage = "Incorrect data size";
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return false;
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}
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if(sectorAddress + length > imageInfo.Sectors)
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{
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ErrorMessage = "Tried to write past image size";
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return false;
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}
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writingStream
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.Seek((long)((ulong)Marshal.SizeOf(typeof(RsIdeHeader)) + sectorAddress * imageInfo.SectorSize),
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SeekOrigin.Begin);
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writingStream.Write(data, 0, data.Length);
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ErrorMessage = "";
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return true;
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}
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public bool WriteSectorLong(byte[] data, ulong sectorAddress)
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{
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ErrorMessage = "Writing sectors with tags is not supported.";
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return false;
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}
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public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
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{
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ErrorMessage = "Writing sectors with tags is not supported.";
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return false;
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}
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public bool SetTracks(List<Track> tracks)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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public bool Close()
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{
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if(!IsWriting)
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{
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ErrorMessage = "Image is not opened for writing";
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return false;
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}
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Version thisVersion = GetType().Assembly.GetName().Version;
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// TODO: Interface to set geometry
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imageInfo.Cylinders = (uint)(imageInfo.Sectors / 16 / 63);
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imageInfo.Heads = 16;
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imageInfo.SectorsPerTrack = 63;
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while(imageInfo.Cylinders == 0)
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{
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imageInfo.Heads--;
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if(imageInfo.Heads == 0)
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{
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imageInfo.SectorsPerTrack--;
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imageInfo.Heads = 16;
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}
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imageInfo.Cylinders = (uint)(imageInfo.Sectors / imageInfo.Heads / imageInfo.SectorsPerTrack);
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if(imageInfo.Cylinders == 0 && imageInfo.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
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}
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RsIdeHeader header = new RsIdeHeader
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{
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magic = signature,
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identify = new byte[106],
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dataOff = (ushort)Marshal.SizeOf(typeof(RsIdeHeader)),
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revision = 1,
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reserved = new byte[11]
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};
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if(imageInfo.SectorSize == 256) header.flags = RsIdeFlags.HalfSectors;
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if(identify == null)
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{
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IdentifyDevice ataId = new IdentifyDevice
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{
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GeneralConfiguration =
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GeneralConfigurationBit.UltraFastIDE | GeneralConfigurationBit.Fixed |
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GeneralConfigurationBit.NotMFM | GeneralConfigurationBit.SoftSector,
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Cylinders = (ushort)imageInfo.Cylinders,
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Heads = (ushort)imageInfo.Heads,
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SectorsPerTrack = (ushort)imageInfo.SectorsPerTrack,
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VendorWord47 = 0x80,
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Capabilities =
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CapabilitiesBit.DMASupport | CapabilitiesBit.IORDY | CapabilitiesBit.LBASupport,
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ExtendedIdentify = ExtendedIdentifyBit.Words54to58Valid,
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CurrentCylinders = (ushort)imageInfo.Cylinders,
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CurrentHeads = (ushort)imageInfo.Heads,
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CurrentSectorsPerTrack = (ushort)imageInfo.SectorsPerTrack,
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CurrentSectors = (uint)imageInfo.Sectors,
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LBASectors = (uint)imageInfo.Sectors,
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DMASupported = TransferMode.Mode0,
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DMAActive = TransferMode.Mode0
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};
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if(string.IsNullOrEmpty(imageInfo.DriveManufacturer)) imageInfo.DriveManufacturer = "DiscImageChef";
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if(string.IsNullOrEmpty(imageInfo.DriveModel)) imageInfo.DriveModel = "";
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if(string.IsNullOrEmpty(imageInfo.DriveFirmwareRevision)) Interop.Version.GetVersion();
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if(string.IsNullOrEmpty(imageInfo.DriveSerialNumber))
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imageInfo.DriveSerialNumber = $"{new Random().NextDouble():X16}";
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byte[] ataIdBytes = new byte[Marshal.SizeOf(ataId)];
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IntPtr ptr = Marshal.AllocHGlobal(512);
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Marshal.StructureToPtr(ataId, ptr, true);
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Marshal.Copy(ptr, ataIdBytes, 0, Marshal.SizeOf(ataId));
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Marshal.FreeHGlobal(ptr);
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Array.Copy(ScrambleATAString(imageInfo.DriveManufacturer + " " + imageInfo.DriveModel, 40), 0,
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ataIdBytes, 27 * 2, 40);
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Array.Copy(ScrambleATAString(imageInfo.DriveFirmwareRevision, 8), 0, ataIdBytes, 23 * 2, 8);
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Array.Copy(ScrambleATAString(imageInfo.DriveSerialNumber, 20), 0, ataIdBytes, 10 * 2, 20);
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Array.Copy(ataIdBytes, 0, header.identify, 0, 106);
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}
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else Array.Copy(identify, 0, header.identify, 0, 106);
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byte[] hdr = new byte[Marshal.SizeOf(header)];
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IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(header));
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Marshal.StructureToPtr(header, hdrPtr, true);
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Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
|
|
Marshal.FreeHGlobal(hdrPtr);
|
|
|
|
writingStream.Seek(0, SeekOrigin.Begin);
|
|
writingStream.Write(hdr, 0, hdr.Length);
|
|
|
|
writingStream.Flush();
|
|
writingStream.Close();
|
|
IsWriting = false;
|
|
|
|
return true;
|
|
}
|
|
|
|
public bool SetMetadata(ImageInfo metadata)
|
|
{
|
|
imageInfo.DriveManufacturer = metadata.DriveManufacturer;
|
|
imageInfo.DriveModel = metadata.DriveModel;
|
|
imageInfo.DriveFirmwareRevision = metadata.DriveFirmwareRevision;
|
|
imageInfo.DriveSerialNumber = metadata.DriveSerialNumber;
|
|
throw new NotImplementedException();
|
|
}
|
|
|
|
static byte[] ScrambleATAString(string text, int length)
|
|
{
|
|
byte[] inbuf = Encoding.ASCII.GetBytes(text);
|
|
if(inbuf.Length % 2 != 0)
|
|
{
|
|
byte[] tmpbuf = new byte[inbuf.Length + 1];
|
|
Array.Copy(inbuf, 0, tmpbuf, 0, inbuf.Length);
|
|
tmpbuf[tmpbuf.Length - 1] = 0x20;
|
|
inbuf = tmpbuf;
|
|
}
|
|
|
|
byte[] outbuf = new byte[inbuf.Length];
|
|
|
|
for(int i = 0; i < length; i += 2)
|
|
{
|
|
outbuf[i] = inbuf[i + 1];
|
|
outbuf[i + 1] = inbuf[i];
|
|
}
|
|
|
|
byte[] retBuf = new byte[length];
|
|
for(int i = 0; i < length; i++) retBuf[i] = 0x20;
|
|
|
|
Array.Copy(outbuf, 0, retBuf, 0, outbuf.Length >= length ? length : outbuf.Length);
|
|
return retBuf;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct RsIdeHeader
|
|
{
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 7)]
|
|
public byte[] magic;
|
|
public byte revision;
|
|
public RsIdeFlags flags;
|
|
public ushort dataOff;
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]
|
|
public byte[] reserved;
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 106)]
|
|
public byte[] identify;
|
|
}
|
|
|
|
[Flags]
|
|
enum RsIdeFlags : byte
|
|
{
|
|
HalfSectors = 1
|
|
}
|
|
}
|
|
} |