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619 lines
18 KiB
C#
619 lines
18 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Apridisk.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Component
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Description
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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.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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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 Apridisk : ImagePlugin
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{
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#region Internal enumerations
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enum RecordType : uint
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{
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Deleted = 0xE31D0000,
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Sector = 0xE31D0001,
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Comment = 0xE31D0002,
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Creator = 0xE31D0003,
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}
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enum CompressType : ushort
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{
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Uncompresed = 0x9E90,
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Compressed = 0x3E5A,
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}
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#endregion
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#region Internal constants
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readonly byte[] signature = {
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0x41, 0x43, 0x54, 0x20, 0x41, 0x70, 0x72, 0x69, 0x63, 0x6F, 0x74, 0x20, 0x64, 0x69, 0x73, 0x6B,
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0x20, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x1A, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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#endregion
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#region Internal structures
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct ApridiskRecord
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{
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public RecordType type;
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public CompressType compression;
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public ushort headerSize;
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public uint dataSize;
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public byte head;
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public byte sector;
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public ushort cylinder;
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}
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#endregion
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// Cylinder by head, sector data matrix
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byte[][][][] sectorsData;
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public Apridisk()
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{
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Name = "ACT Apricot Disk Image";
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PluginUUID = new Guid("43408CF3-6DB3-449F-A779-2B0E497C5B14");
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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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public override bool IdentifyImage(Filter 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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if(stream.Length < signature.Length)
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return false;
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byte[] sig_b = new byte[signature.Length];
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stream.Read(sig_b, 0, signature.Length);
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return sig_b.SequenceEqual(signature);
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}
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public override bool OpenImage(Filter 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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// Skip signature
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stream.Seek(signature.Length, SeekOrigin.Begin);
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int totalCylinders = -1;
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int totalHeads = -1;
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int maxSector = - 1;
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int recordSize = Marshal.SizeOf(typeof(ApridiskRecord));
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// Count cylinders
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while(stream.Position < stream.Length)
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{
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ApridiskRecord record = new ApridiskRecord();
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byte[] rec_b = new byte[recordSize];
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stream.Read(rec_b, 0, recordSize);
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GCHandle handle = GCHandle.Alloc(rec_b, GCHandleType.Pinned);
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record = (ApridiskRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(ApridiskRecord));
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handle.Free();
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switch(record.type)
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{
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// Deleted record, just skip it
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case RecordType.Deleted:
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DicConsole.DebugWriteLine("Apridisk plugin", "Found deleted record at {0}", stream.Position);
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stream.Seek((record.headerSize - recordSize) + record.dataSize, SeekOrigin.Current);
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break;
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case RecordType.Comment:
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DicConsole.DebugWriteLine("Apridisk plugin", "Found comment record at {0}", stream.Position);
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stream.Seek(record.headerSize - recordSize, SeekOrigin.Current);
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byte[] comment_b = new byte[record.dataSize];
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stream.Read(comment_b, 0, comment_b.Length);
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ImageInfo.imageComments = StringHandlers.CToString(comment_b);
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DicConsole.DebugWriteLine("Apridisk plugin", "Comment: \"{0}\"", ImageInfo.imageComments);
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break;
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case RecordType.Creator:
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DicConsole.DebugWriteLine("Apridisk plugin", "Found creator record at {0}", stream.Position);
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stream.Seek(record.headerSize - recordSize, SeekOrigin.Current);
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byte[] creator_b = new byte[record.dataSize];
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stream.Read(creator_b, 0, creator_b.Length);
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ImageInfo.imageCreator = StringHandlers.CToString(creator_b);
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DicConsole.DebugWriteLine("Apridisk plugin", "Creator: \"{0}\"", ImageInfo.imageCreator);
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break;
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case RecordType.Sector:
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if(record.compression != CompressType.Compressed && record.compression != CompressType.Uncompresed)
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throw new ImageNotSupportedException(string.Format("Found record with unknown compression type 0x{0:X4} at {1}", (ushort)record.compression, stream.Position));
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DicConsole.DebugWriteLine("Apridisk plugin", "Found {4} sector record at {0} for cylinder {1} head {2} sector {3}", stream.Position, record.cylinder, record.head,
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record.sector, record.compression == CompressType.Compressed ? "compressed" : "uncompressed");
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if(record.cylinder > totalCylinders)
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totalCylinders = record.cylinder;
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if(record.head > totalHeads)
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totalHeads = record.head;
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if(record.sector > maxSector)
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maxSector = record.sector;
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stream.Seek((record.headerSize - recordSize) + record.dataSize, SeekOrigin.Current);
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break;
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default:
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throw new ImageNotSupportedException(string.Format("Found record with unknown type 0x{0:X8} at {1}", (uint)record.type, stream.Position));
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}
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}
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totalCylinders++;
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totalHeads++;
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if(totalCylinders <= 0 || totalHeads <= 0)
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throw new ImageNotSupportedException("No cylinders or heads found");
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sectorsData = new byte[totalCylinders][][][];
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// Total sectors per track
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uint[][] spts = new uint[totalCylinders][];
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ImageInfo.cylinders = (ushort)totalCylinders;
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ImageInfo.heads = (byte)totalHeads;
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DicConsole.DebugWriteLine("Apridisk plugin", "Found {0} cylinders and {1} heads with a maximum sector number of {2}", totalCylinders, totalHeads, maxSector);
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// Create heads
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for(int i = 0; i < totalCylinders; i++)
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{
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sectorsData[i] = new byte[totalHeads][][];
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spts[i] = new uint[totalHeads];
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for(int j = 0; j < totalHeads; j++)
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sectorsData[i][j] = new byte[maxSector + 1][];
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}
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ImageInfo.sectorSize = uint.MaxValue;
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ulong headersizes = 0;
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// Read sectors
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stream.Seek(signature.Length, SeekOrigin.Begin);
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while(stream.Position < stream.Length)
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{
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ApridiskRecord record = new ApridiskRecord();
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byte[] rec_b = new byte[recordSize];
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stream.Read(rec_b, 0, recordSize);
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GCHandle handle = GCHandle.Alloc(rec_b, GCHandleType.Pinned);
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record = (ApridiskRecord)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(ApridiskRecord));
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handle.Free();
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switch(record.type)
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{
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// Not sector record, just skip it
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case RecordType.Deleted:
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case RecordType.Comment:
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case RecordType.Creator:
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stream.Seek((record.headerSize - recordSize) + record.dataSize, SeekOrigin.Current);
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headersizes += record.headerSize + record.dataSize;
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break;
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case RecordType.Sector:
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stream.Seek(record.headerSize - recordSize, SeekOrigin.Current);
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byte[] data = new byte[record.dataSize];
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stream.Read(data, 0, data.Length);
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spts[record.cylinder][record.head]++;
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uint realLength = record.dataSize;
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if(record.compression == CompressType.Compressed)
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realLength = Decompress(data, out sectorsData[record.cylinder][record.head][record.sector]);
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else
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sectorsData[record.cylinder][record.head][record.sector] = data;
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if(realLength < ImageInfo.sectorSize)
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ImageInfo.sectorSize = realLength;
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headersizes += record.headerSize + record.dataSize;
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break;
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}
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}
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DicConsole.DebugWriteLine("Apridisk plugin", "Found a minimum of {0} bytes per sector", ImageInfo.sectorSize);
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// Count sectors per track
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uint spt = uint.MaxValue;
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for(ushort cyl = 0; cyl < ImageInfo.cylinders; cyl++)
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{
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for(ushort head = 0; head < ImageInfo.heads; head++)
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{
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if(spts[cyl][head] < spt)
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spt = spts[cyl][head];
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}
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}
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ImageInfo.sectorsPerTrack = spt;
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DicConsole.DebugWriteLine("Apridisk plugin", "Found a minimum of {0} sectors per track", ImageInfo.sectorsPerTrack);
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if(ImageInfo.cylinders == 70 && ImageInfo.heads == 1 && ImageInfo.sectorsPerTrack == 9)
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ImageInfo.mediaType = MediaType.Apricot_35;
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else if(ImageInfo.cylinders == 80 && ImageInfo.heads == 1 && ImageInfo.sectorsPerTrack == 9)
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ImageInfo.mediaType = MediaType.DOS_35_SS_DD_9;
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else if(ImageInfo.cylinders == 80 && ImageInfo.heads == 2 && ImageInfo.sectorsPerTrack == 9)
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ImageInfo.mediaType = MediaType.DOS_35_DS_DD_9;
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ImageInfo.imageSize = (ulong)stream.Length - headersizes;
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ImageInfo.imageCreationTime = imageFilter.GetCreationTime();
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ImageInfo.imageLastModificationTime = imageFilter.GetLastWriteTime();
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ImageInfo.imageName = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
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ImageInfo.sectors = ImageInfo.cylinders * ImageInfo.heads * ImageInfo.sectorsPerTrack;
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ImageInfo.xmlMediaType = XmlMediaType.BlockMedia;
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/*
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FileStream debugFs = new FileStream("debug.img", FileMode.CreateNew, FileAccess.Write);
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for(ulong i = 0; i < ImageInfo.sectors; i++)
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debugFs.Write(ReadSector(i), 0, (int)ImageInfo.sectorSize);
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debugFs.Dispose();
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*/
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return true;
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}
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static uint Decompress(byte[] compressed, out byte[] decompressed)
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{
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int readp = 0;
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ushort blklen;
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uint u_len = 0;
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int c_len = compressed.Length;
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MemoryStream buffer = new MemoryStream();
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u_len = 0;
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while(c_len >= 3)
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{
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blklen = BitConverter.ToUInt16(compressed, readp);
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readp += 2;
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for(int i = 0; i < blklen; i++)
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buffer.WriteByte(compressed[readp]);
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u_len += blklen;
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readp++;
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c_len -= 3;
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}
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decompressed = buffer.ToArray();
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return u_len;
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}
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public override bool ImageHasPartitions()
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{
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return false;
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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 string GetImageFormat()
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{
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return "ACT Apricot disk image";
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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 MediaType GetMediaType()
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{
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return ImageInfo.mediaType;
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}
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public override byte[] ReadSector(ulong sectorAddress)
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{
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(ushort cylinder, byte head, byte sector) = LbaToChs(sectorAddress);
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if(cylinder >= sectorsData.Length)
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throw new ArgumentOutOfRangeException(nameof(sectorAddress), "Sector address not found");
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if(head >= sectorsData[cylinder].Length)
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throw new ArgumentOutOfRangeException(nameof(sectorAddress), "Sector address not found");
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if(sector > sectorsData[cylinder][head].Length)
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throw new ArgumentOutOfRangeException(nameof(sectorAddress), "Sector address not found");
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return sectorsData[cylinder][head][sector];
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}
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public override 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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MemoryStream buffer = new MemoryStream();
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for(uint i = 0; i < length; i++)
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{
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byte[] sector = ReadSector(sectorAddress + i);
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buffer.Write(sector, 0, sector.Length);
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}
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return buffer.ToArray();
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}
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(ushort cylinder, byte head, byte sector) LbaToChs(ulong lba)
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{
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ushort cylinder = (ushort)(lba / (ImageInfo.heads * ImageInfo.sectorsPerTrack));
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byte head = (byte)((lba / ImageInfo.sectorsPerTrack) % ImageInfo.heads);
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byte sector = (byte)((lba % ImageInfo.sectorsPerTrack) + 1);
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return (cylinder, head, sector);
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}
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#region Unsupported features
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public override byte[] ReadDiskTag(MediaTagType 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[] 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 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[] 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 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[] 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 override byte[] ReadSectorLong(ulong sectorAddress, uint track)
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{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorsLong(ulong sectorAddress, uint length)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorsLong(ulong sectorAddress, uint length, uint track)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override string GetMediaManufacturer()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override string GetMediaModel()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override string GetMediaSerialNumber()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override string GetMediaBarcode()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override string GetMediaPartNumber()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override int GetMediaSequence()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
public override int GetLastDiskSequence()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
public override string GetDriveManufacturer()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override string GetDriveModel()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override string GetDriveSerialNumber()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override List<Partition> GetPartitions()
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override List<Track> GetTracks()
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override List<Track> GetSessionTracks(Session session)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override List<Track> GetSessionTracks(ushort session)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override List<Session> GetSessions()
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override bool? VerifySector(ulong sectorAddress)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public override bool? VerifySector(ulong sectorAddress, uint track)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override bool? VerifySectors(ulong sectorAddress, uint length, out List<ulong> FailingLBAs, out List<ulong> UnknownLBAs)
|
|
{
|
|
FailingLBAs = new List<ulong>();
|
|
UnknownLBAs = new List<ulong>();
|
|
for(ulong i = 0; i < ImageInfo.sectors; i++)
|
|
UnknownLBAs.Add(i);
|
|
return null;
|
|
}
|
|
|
|
public override bool? VerifySectors(ulong sectorAddress, uint length, uint track, out List<ulong> FailingLBAs, out List<ulong> UnknownLBAs)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override bool? VerifyMediaImage()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
} |