mirror of
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882 lines
36 KiB
C#
882 lines
36 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : UDIF.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 Apple Universal Disk Image Format.
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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 Claunia.PropertyList;
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using Claunia.RsrcFork;
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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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using DiscImageChef.DiscImages;
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using SharpCompress.Compressors;
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using SharpCompress.Compressors.ADC;
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using SharpCompress.Compressors.BZip2;
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namespace DiscImageChef.DiscImages
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{
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public class Udif : ImagePlugin
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{
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#region Internal constants
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const uint UDIF_SIGNATURE = 0x6B6F6C79;
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const uint CHUNK_SIGNATURE = 0x6D697368;
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// All chunk types with this mask are compressed
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const uint CHUNK_TYPE_COMPRESSED_MASK = 0x80000000;
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const uint CHUNK_TYPE_ZERO = 0x00000000;
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const uint CHUNK_TYPE_COPY = 0x00000001;
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const uint CHUNK_TYPE_NOCOPY = 0x00000002;
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const uint CHUNK_TYPE_KENCODE = 0x80000001;
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const uint CHUNK_TYPE_RLE = 0x80000002;
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const uint CHUNK_TYPE_LZH = 0x80000003;
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const uint CHUNK_TYPE_ADC = 0x80000004;
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const uint CHUNK_TYPE_ZLIB = 0x80000005;
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const uint CHUNK_TYPE_BZIP = 0x80000006;
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const uint CHUNK_TYPE_LZFSE = 0x80000007;
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const uint CHUNK_TYPE_COMMNT = 0x7FFFFFFE;
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const uint CHUNK_TYPE_END = 0xFFFFFFFF;
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const string RESOURCE_FORK_KEY = "resource-fork";
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const string BLOCK_KEY = "blkx";
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const uint BLOCK_OS_TYPE = 0x626C6B78;
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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 UdifFooter
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{
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public uint signature;
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public uint version;
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public uint headerSize;
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public uint flags;
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public ulong runningDataForkOff;
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public ulong dataForkOff;
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public ulong dataForkLen;
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public ulong rsrcForkOff;
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public ulong rsrcForkLen;
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public uint segmentNumber;
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public uint segmentCount;
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public Guid segmentId;
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public uint dataForkChkType;
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public uint dataForkChkLen;
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public uint dataForkChk;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 124)] public byte[] reserved1;
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public ulong plistOff;
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public ulong plistLen;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 120)] public byte[] reserved2;
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public uint masterChkType;
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public uint masterChkLen;
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public uint masterChk;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 124)] public byte[] reserved3;
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public uint imageVariant;
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public ulong sectorCount;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)] public byte[] reserved4;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct BlockHeader
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{
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public uint signature;
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public uint version;
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public ulong sectorStart;
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public ulong sectorCount;
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public ulong dataOffset;
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public uint buffers;
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public uint descriptor;
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public uint reserved1;
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public uint reserved2;
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public uint reserved3;
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public uint reserved4;
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public uint reserved5;
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public uint reserved6;
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public uint checksumType;
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public uint checksumLen;
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public uint checksum;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 124)] public byte[] reservedChk;
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public uint chunks;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct BlockChunk
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{
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public uint type;
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public uint comment;
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public ulong sector;
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public ulong sectors;
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public ulong offset;
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public ulong length;
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}
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#endregion
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UdifFooter footer;
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Dictionary<ulong, BlockChunk> chunks;
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Dictionary<ulong, byte[]> sectorCache;
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Dictionary<ulong, byte[]> chunkCache;
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const uint MAX_CACHE_SIZE = 16777216;
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const uint SECTOR_SIZE = 512;
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uint maxCachedSectors = MAX_CACHE_SIZE / SECTOR_SIZE;
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uint currentChunkCacheSize;
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uint buffersize;
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Stream imageStream;
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public Udif()
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{
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Name = "Apple Universal Disk Image Format";
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PluginUuid = new Guid("5BEB9002-CF3D-429C-8E06-9A96F49203FF");
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ImageInfo = new ImageInfo();
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ImageInfo.ReadableSectorTags = new List<SectorTagType>();
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ImageInfo.ReadableMediaTags = new List<MediaTagType>();
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ImageInfo.ImageHasPartitions = false;
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ImageInfo.ImageHasSessions = false;
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ImageInfo.ImageVersion = null;
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ImageInfo.ImageApplication = null;
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ImageInfo.ImageApplicationVersion = null;
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ImageInfo.ImageCreator = null;
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ImageInfo.ImageComments = null;
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ImageInfo.MediaManufacturer = null;
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ImageInfo.MediaModel = null;
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ImageInfo.MediaSerialNumber = null;
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ImageInfo.MediaBarcode = null;
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ImageInfo.MediaPartNumber = null;
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ImageInfo.MediaSequence = 0;
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ImageInfo.LastMediaSequence = 0;
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ImageInfo.DriveManufacturer = null;
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ImageInfo.DriveModel = null;
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ImageInfo.DriveSerialNumber = null;
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ImageInfo.DriveFirmwareRevision = null;
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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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if(stream.Length < 512) return false;
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stream.Seek(-Marshal.SizeOf(footer), SeekOrigin.End);
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byte[] footerB = new byte[Marshal.SizeOf(footer)];
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stream.Read(footerB, 0, Marshal.SizeOf(footer));
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footer = BigEndianMarshal.ByteArrayToStructureBigEndian<UdifFooter>(footerB);
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if(footer.signature == UDIF_SIGNATURE) return true;
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// Old UDIF as created by DiskCopy 6.5 using "OBSOLETE" format. (DiskCopy 5 rumored format?)
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stream.Seek(0, SeekOrigin.Begin);
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byte[] headerB = new byte[Marshal.SizeOf(footer)];
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stream.Read(headerB, 0, Marshal.SizeOf(footer));
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footer = BigEndianMarshal.ByteArrayToStructureBigEndian<UdifFooter>(headerB);
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return footer.signature == UDIF_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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if(stream.Length < 512) return false;
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stream.Seek(-Marshal.SizeOf(footer), SeekOrigin.End);
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byte[] footerB = new byte[Marshal.SizeOf(footer)];
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stream.Read(footerB, 0, Marshal.SizeOf(footer));
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footer = BigEndianMarshal.ByteArrayToStructureBigEndian<UdifFooter>(footerB);
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if(footer.signature != UDIF_SIGNATURE)
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{
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stream.Seek(0, SeekOrigin.Begin);
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footerB = new byte[Marshal.SizeOf(footer)];
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stream.Read(footerB, 0, Marshal.SizeOf(footer));
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footer = BigEndianMarshal.ByteArrayToStructureBigEndian<UdifFooter>(footerB);
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if(footer.signature != UDIF_SIGNATURE) throw new Exception("Unable to find UDIF signature.");
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DicConsole.VerboseWriteLine("Found obsolete UDIF format.");
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}
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DicConsole.DebugWriteLine("UDIF plugin", "footer.signature = 0x{0:X8}", footer.signature);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.version = {0}", footer.version);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.headerSize = {0}", footer.headerSize);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.flags = {0}", footer.flags);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.runningDataForkOff = {0}", footer.runningDataForkOff);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.dataForkOff = {0}", footer.dataForkOff);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.dataForkLen = {0}", footer.dataForkLen);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.rsrcForkOff = {0}", footer.rsrcForkOff);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.rsrcForkLen = {0}", footer.rsrcForkLen);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.segmentNumber = {0}", footer.segmentNumber);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.segmentCount = {0}", footer.segmentCount);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.segmentId = {0}", footer.segmentId);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.dataForkChkType = {0}", footer.dataForkChkType);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.dataForkLen = {0}", footer.dataForkLen);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.dataForkChk = 0x{0:X8}", footer.dataForkChk);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.xmlOff = {0}", footer.plistOff);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.xmlLen = {0}", footer.plistLen);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.masterChkType = {0}", footer.masterChkType);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.masterChkLen = {0}", footer.masterChkLen);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.masterChk = 0x{0:X8}", footer.masterChk);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.imageVariant = {0}", footer.imageVariant);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.sectorCount = {0}", footer.sectorCount);
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DicConsole.DebugWriteLine("UDIF plugin", "footer.reserved1 is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(footer.reserved1));
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DicConsole.DebugWriteLine("UDIF plugin", "footer.reserved2 is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(footer.reserved2));
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DicConsole.DebugWriteLine("UDIF plugin", "footer.reserved3 is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(footer.reserved3));
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DicConsole.DebugWriteLine("UDIF plugin", "footer.reserved4 is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(footer.reserved4));
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// Block chunks and headers
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List<byte[]> blkxList = new List<byte[]>();
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chunks = new Dictionary<ulong, BlockChunk>();
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bool fakeBlockChunks = false;
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byte[] vers = null;
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if(footer.plistLen == 0 && footer.rsrcForkLen != 0)
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{
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DicConsole.DebugWriteLine("UDIF plugin", "Reading resource fork.");
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byte[] rsrcB = new byte[footer.rsrcForkLen];
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stream.Seek((long)footer.rsrcForkOff, SeekOrigin.Begin);
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stream.Read(rsrcB, 0, rsrcB.Length);
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ResourceFork rsrc = new ResourceFork(rsrcB);
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if(!rsrc.ContainsKey(BLOCK_OS_TYPE))
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throw new
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ImageNotSupportedException("Image resource fork doesn't contain UDIF block chunks. Please fill an issue and send it to us.");
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Resource blkxRez = rsrc.GetResource(BLOCK_OS_TYPE);
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if(blkxRez == null)
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throw new
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ImageNotSupportedException("Image resource fork doesn't contain UDIF block chunks. Please fill an issue and send it to us.");
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if(blkxRez.GetIds().Length == 0)
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throw new
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ImageNotSupportedException("Image resource fork doesn't contain UDIF block chunks. Please fill an issue and send it to us.");
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foreach(short blkxId in blkxRez.GetIds()) blkxList.Add(blkxRez.GetResource(blkxId));
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Resource versRez = rsrc.GetResource(0x76657273);
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if(versRez != null) vers = versRez.GetResource(versRez.GetIds()[0]);
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}
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else if(footer.plistLen != 0)
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{
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DicConsole.DebugWriteLine("UDIF plugin", "Reading property list.");
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byte[] plistB = new byte[footer.plistLen];
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stream.Seek((long)footer.plistOff, SeekOrigin.Begin);
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stream.Read(plistB, 0, plistB.Length);
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DicConsole.DebugWriteLine("UDIF plugin", "Parsing property list.");
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NSDictionary plist = (NSDictionary)XmlPropertyListParser.Parse(plistB);
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if(plist == null) throw new Exception("Could not parse property list.");
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NSObject rsrcObj;
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if(!plist.TryGetValue(RESOURCE_FORK_KEY, out rsrcObj))
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throw new Exception("Could not retrieve resource fork.");
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NSDictionary rsrc = (NSDictionary)rsrcObj;
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NSObject blkxObj;
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if(!rsrc.TryGetValue(BLOCK_KEY, out blkxObj))
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throw new Exception("Could not retrieve block chunks array.");
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NSObject[] blkx = ((NSArray)blkxObj).GetArray();
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foreach(NSObject partObj in blkx)
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{
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NSDictionary part = (NSDictionary)partObj;
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NSObject nameObj, dataObj;
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if(!part.TryGetValue("Name", out nameObj)) throw new Exception("Could not retrieve Name");
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if(!part.TryGetValue("Data", out dataObj)) throw new Exception("Could not retrieve Data");
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blkxList.Add(((NSData)dataObj).Bytes);
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}
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NSObject versObj;
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if(rsrc.TryGetValue("vers", out versObj))
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{
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NSObject[] versArray = ((NSArray)versObj).GetArray();
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if(versArray.Length >= 1) vers = ((NSData)versArray[0]).Bytes;
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}
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}
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else
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{
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// Obsolete read-only UDIF only prepended the header and then put the image without any kind of block references.
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// So let's falsify a block chunk
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BlockChunk bChnk = new BlockChunk();
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bChnk.length = footer.dataForkLen;
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bChnk.offset = footer.dataForkOff;
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bChnk.sector = 0;
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bChnk.sectors = footer.sectorCount;
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bChnk.type = CHUNK_TYPE_COPY;
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ImageInfo.Sectors = footer.sectorCount;
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chunks.Add(bChnk.sector, bChnk);
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buffersize = 2048 * SECTOR_SIZE;
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fakeBlockChunks = true;
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}
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if(vers != null)
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{
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Resources.Version version = new Resources.Version(vers);
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string major;
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string minor;
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string release = null;
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string dev = null;
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string pre = null;
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major = string.Format("{0}", version.MajorVersion);
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minor = string.Format(".{0}", version.MinorVersion / 10);
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if(version.MinorVersion % 10 > 0) release = string.Format(".{0}", version.MinorVersion % 10);
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switch(version.DevStage)
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{
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case Resources.Version.DevelopmentStage.Alpha:
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dev = "a";
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break;
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case Resources.Version.DevelopmentStage.Beta:
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dev = "b";
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break;
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case Resources.Version.DevelopmentStage.PreAlpha:
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dev = "d";
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break;
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}
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if(dev == null && version.PreReleaseVersion > 0) dev = "f";
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if(dev != null) pre = string.Format("{0}", version.PreReleaseVersion);
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ImageInfo.ImageApplicationVersion = string.Format("{0}{1}{2}{3}{4}", major, minor, release, dev, pre);
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ImageInfo.ImageApplication = version.VersionString;
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ImageInfo.ImageComments = version.VersionMessage;
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if(version.MajorVersion == 3) ImageInfo.ImageApplication = "ShrinkWrap™";
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else if(version.MajorVersion == 6) ImageInfo.ImageApplication = "DiskCopy";
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}
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else ImageInfo.ImageApplication = "DiskCopy";
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DicConsole.DebugWriteLine("UDIF plugin", "Image application = {0} version {1}", ImageInfo.ImageApplication,
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ImageInfo.ImageApplicationVersion);
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ImageInfo.Sectors = 0;
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if(!fakeBlockChunks)
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{
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if(blkxList.Count == 0)
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throw new
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ImageNotSupportedException("Could not retrieve block chunks. Please fill an issue and send it to us.");
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buffersize = 0;
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foreach(byte[] blkxBytes in blkxList)
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{
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BlockHeader bHdr = new BlockHeader();
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byte[] bHdrB = new byte[Marshal.SizeOf(bHdr)];
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Array.Copy(blkxBytes, 0, bHdrB, 0, Marshal.SizeOf(bHdr));
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bHdr = BigEndianMarshal.ByteArrayToStructureBigEndian<BlockHeader>(bHdrB);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.signature = 0x{0:X8}", bHdr.signature);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.version = {0}", bHdr.version);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.sectorStart = {0}", bHdr.sectorStart);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.sectorCount = {0}", bHdr.sectorCount);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.dataOffset = {0}", bHdr.dataOffset);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.buffers = {0}", bHdr.buffers);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.descriptor = 0x{0:X8}", bHdr.descriptor);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reserved1 = {0}", bHdr.reserved1);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reserved2 = {0}", bHdr.reserved2);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reserved3 = {0}", bHdr.reserved3);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reserved4 = {0}", bHdr.reserved4);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reserved5 = {0}", bHdr.reserved5);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reserved6 = {0}", bHdr.reserved6);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.checksumType = {0}", bHdr.checksumType);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.checksumLen = {0}", bHdr.checksumLen);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.checksum = 0x{0:X8}", bHdr.checksum);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunks = {0}", bHdr.chunks);
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DicConsole.DebugWriteLine("UDIF plugin", "bHdr.reservedChk is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(bHdr.reservedChk));
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if(bHdr.buffers > buffersize) buffersize = bHdr.buffers * SECTOR_SIZE;
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for(int i = 0; i < bHdr.chunks; i++)
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{
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BlockChunk bChnk = new BlockChunk();
|
|
byte[] bChnkB = new byte[Marshal.SizeOf(bChnk)];
|
|
Array.Copy(blkxBytes, Marshal.SizeOf(bHdr) + Marshal.SizeOf(bChnk) * i, bChnkB, 0,
|
|
Marshal.SizeOf(bChnk));
|
|
bChnk = BigEndianMarshal.ByteArrayToStructureBigEndian<BlockChunk>(bChnkB);
|
|
|
|
DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunk[{0}].type = 0x{1:X8}", i, bChnk.type);
|
|
DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunk[{0}].comment = {1}", i, bChnk.comment);
|
|
DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunk[{0}].sector = {1}", i, bChnk.sector);
|
|
DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunk[{0}].sectors = {1}", i, bChnk.sectors);
|
|
DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunk[{0}].offset = {1}", i, bChnk.offset);
|
|
DicConsole.DebugWriteLine("UDIF plugin", "bHdr.chunk[{0}].length = {1}", i, bChnk.length);
|
|
|
|
if(bChnk.type == CHUNK_TYPE_END) break;
|
|
|
|
ImageInfo.Sectors += bChnk.sectors;
|
|
|
|
// Chunk offset is relative
|
|
bChnk.sector += bHdr.sectorStart;
|
|
bChnk.offset += bHdr.dataOffset;
|
|
|
|
// TODO: Handle comments
|
|
if(bChnk.type == CHUNK_TYPE_COMMNT) continue;
|
|
|
|
// TODO: Handle compressed chunks
|
|
if((bChnk.type == CHUNK_TYPE_KENCODE))
|
|
throw new
|
|
ImageNotSupportedException("Chunks compressed with KenCode are not yet supported.");
|
|
if((bChnk.type == CHUNK_TYPE_RLE))
|
|
throw new ImageNotSupportedException("Chunks compressed with RLE are not yet supported.");
|
|
if((bChnk.type == CHUNK_TYPE_LZH))
|
|
throw new ImageNotSupportedException("Chunks compressed with LZH are not yet supported.");
|
|
if((bChnk.type == CHUNK_TYPE_LZFSE))
|
|
throw new ImageNotSupportedException("Chunks compressed with lzfse are not yet supported.");
|
|
|
|
if((bChnk.type > CHUNK_TYPE_NOCOPY && bChnk.type < CHUNK_TYPE_COMMNT) ||
|
|
(bChnk.type > CHUNK_TYPE_LZFSE && bChnk.type < CHUNK_TYPE_END))
|
|
throw new ImageNotSupportedException(string.Format("Unsupported chunk type 0x{0:X8} found",
|
|
bChnk.type));
|
|
|
|
if(bChnk.sectors > 0) chunks.Add(bChnk.sector, bChnk);
|
|
}
|
|
}
|
|
}
|
|
|
|
sectorCache = new Dictionary<ulong, byte[]>();
|
|
chunkCache = new Dictionary<ulong, byte[]>();
|
|
currentChunkCacheSize = 0;
|
|
imageStream = stream;
|
|
|
|
ImageInfo.ImageCreationTime = imageFilter.GetCreationTime();
|
|
ImageInfo.ImageLastModificationTime = imageFilter.GetLastWriteTime();
|
|
ImageInfo.ImageName = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
|
|
ImageInfo.SectorSize = SECTOR_SIZE;
|
|
ImageInfo.XmlMediaType = XmlMediaType.BlockMedia;
|
|
ImageInfo.MediaType = MediaType.GENERIC_HDD;
|
|
ImageInfo.ImageSize = ImageInfo.Sectors * SECTOR_SIZE;
|
|
ImageInfo.ImageVersion = string.Format("{0}", footer.version);
|
|
|
|
ImageInfo.Cylinders = (uint)((ImageInfo.Sectors / 16) / 63);
|
|
ImageInfo.Heads = 16;
|
|
ImageInfo.SectorsPerTrack = 63;
|
|
|
|
return true;
|
|
}
|
|
|
|
public override byte[] ReadSector(ulong sectorAddress)
|
|
{
|
|
if(sectorAddress > ImageInfo.Sectors - 1)
|
|
throw new ArgumentOutOfRangeException(nameof(sectorAddress),
|
|
string.Format("Sector address {0} not found", sectorAddress));
|
|
|
|
byte[] sector;
|
|
|
|
if(sectorCache.TryGetValue(sectorAddress, out sector)) return sector;
|
|
|
|
BlockChunk currentChunk = new BlockChunk();
|
|
bool chunkFound = false;
|
|
ulong chunkStartSector = 0;
|
|
|
|
foreach(KeyValuePair<ulong, BlockChunk> kvp in chunks)
|
|
{
|
|
if(sectorAddress >= kvp.Key)
|
|
{
|
|
currentChunk = kvp.Value;
|
|
chunkFound = true;
|
|
chunkStartSector = kvp.Key;
|
|
}
|
|
}
|
|
|
|
long relOff = ((long)sectorAddress - (long)chunkStartSector) * SECTOR_SIZE;
|
|
|
|
if(relOff < 0)
|
|
throw new ArgumentOutOfRangeException(nameof(relOff),
|
|
string
|
|
.Format("Got a negative offset for sector {0}. This should not happen.",
|
|
sectorAddress));
|
|
|
|
if(!chunkFound)
|
|
throw new ArgumentOutOfRangeException(nameof(sectorAddress),
|
|
string.Format("Sector address {0} not found", sectorAddress));
|
|
|
|
if((currentChunk.type & CHUNK_TYPE_COMPRESSED_MASK) == CHUNK_TYPE_COMPRESSED_MASK)
|
|
{
|
|
byte[] buffer;
|
|
if(!chunkCache.TryGetValue(chunkStartSector, out buffer))
|
|
{
|
|
byte[] cmpBuffer = new byte[currentChunk.length];
|
|
imageStream.Seek((long)currentChunk.offset, SeekOrigin.Begin);
|
|
imageStream.Read(cmpBuffer, 0, cmpBuffer.Length);
|
|
MemoryStream cmpMs = new MemoryStream(cmpBuffer);
|
|
Stream decStream;
|
|
|
|
if(currentChunk.type == CHUNK_TYPE_ADC) decStream = new ADCStream(cmpMs, CompressionMode.Decompress);
|
|
else if(currentChunk.type == CHUNK_TYPE_ZLIB)
|
|
decStream = new Ionic.Zlib.ZlibStream(cmpMs, Ionic.Zlib.CompressionMode.Decompress);
|
|
else if(currentChunk.type == CHUNK_TYPE_BZIP)
|
|
decStream = new BZip2Stream(cmpMs, CompressionMode.Decompress);
|
|
else
|
|
throw new ImageNotSupportedException(string.Format("Unsupported chunk type 0x{0:X8} found",
|
|
currentChunk.type));
|
|
|
|
#if DEBUG
|
|
try
|
|
{
|
|
#endif
|
|
byte[] tmpBuffer = new byte[buffersize];
|
|
int realSize = decStream.Read(tmpBuffer, 0, (int)buffersize);
|
|
buffer = new byte[realSize];
|
|
Array.Copy(tmpBuffer, 0, buffer, 0, realSize);
|
|
tmpBuffer = null;
|
|
|
|
if(currentChunkCacheSize + realSize > MAX_CACHE_SIZE)
|
|
{
|
|
chunkCache.Clear();
|
|
currentChunkCacheSize = 0;
|
|
}
|
|
|
|
chunkCache.Add(chunkStartSector, buffer);
|
|
currentChunkCacheSize += (uint)realSize;
|
|
#if DEBUG
|
|
}
|
|
catch(Ionic.Zlib.ZlibException)
|
|
{
|
|
DicConsole.WriteLine("zlib exception on chunk starting at sector {0}", currentChunk.sector);
|
|
throw;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
sector = new byte[SECTOR_SIZE];
|
|
Array.Copy(buffer, relOff, sector, 0, SECTOR_SIZE);
|
|
|
|
if(sectorCache.Count >= maxCachedSectors) sectorCache.Clear();
|
|
|
|
sectorCache.Add(sectorAddress, sector);
|
|
|
|
return sector;
|
|
}
|
|
|
|
if(currentChunk.type == CHUNK_TYPE_NOCOPY || currentChunk.type == CHUNK_TYPE_ZERO)
|
|
{
|
|
sector = new byte[SECTOR_SIZE];
|
|
|
|
if(sectorCache.Count >= maxCachedSectors) sectorCache.Clear();
|
|
|
|
sectorCache.Add(sectorAddress, sector);
|
|
return sector;
|
|
}
|
|
|
|
if(currentChunk.type == CHUNK_TYPE_COPY)
|
|
{
|
|
imageStream.Seek((long)currentChunk.offset + relOff, SeekOrigin.Begin);
|
|
sector = new byte[SECTOR_SIZE];
|
|
imageStream.Read(sector, 0, sector.Length);
|
|
|
|
if(sectorCache.Count >= maxCachedSectors) sectorCache.Clear();
|
|
|
|
sectorCache.Add(sectorAddress, sector);
|
|
return sector;
|
|
}
|
|
|
|
throw new ImageNotSupportedException(string.Format("Unsupported chunk type 0x{0:X8} found",
|
|
currentChunk.type));
|
|
}
|
|
|
|
public override byte[] ReadSectors(ulong sectorAddress, uint length)
|
|
{
|
|
if(sectorAddress > ImageInfo.Sectors - 1)
|
|
throw new ArgumentOutOfRangeException(nameof(sectorAddress),
|
|
string.Format("Sector address {0} not found", sectorAddress));
|
|
|
|
if(sectorAddress + length > ImageInfo.Sectors)
|
|
throw new ArgumentOutOfRangeException(nameof(length), "Requested more sectors than available");
|
|
|
|
MemoryStream ms = new MemoryStream();
|
|
|
|
for(uint i = 0; i < length; i++)
|
|
{
|
|
byte[] sector = ReadSector(sectorAddress + i);
|
|
ms.Write(sector, 0, sector.Length);
|
|
}
|
|
|
|
return ms.ToArray();
|
|
}
|
|
|
|
public override bool ImageHasPartitions()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
public override ulong GetImageSize()
|
|
{
|
|
return ImageInfo.ImageSize;
|
|
}
|
|
|
|
public override ulong GetSectors()
|
|
{
|
|
return ImageInfo.Sectors;
|
|
}
|
|
|
|
public override uint GetSectorSize()
|
|
{
|
|
return ImageInfo.SectorSize;
|
|
}
|
|
|
|
public override string GetImageFormat()
|
|
{
|
|
return "Apple Universal Disk Image Format";
|
|
}
|
|
|
|
public override string GetImageVersion()
|
|
{
|
|
return ImageInfo.ImageVersion;
|
|
}
|
|
|
|
public override string GetImageApplication()
|
|
{
|
|
return ImageInfo.ImageApplication;
|
|
}
|
|
|
|
public override string GetImageApplicationVersion()
|
|
{
|
|
return ImageInfo.ImageApplicationVersion;
|
|
}
|
|
|
|
public override string GetImageCreator()
|
|
{
|
|
return ImageInfo.ImageCreator;
|
|
}
|
|
|
|
public override DateTime GetImageCreationTime()
|
|
{
|
|
return ImageInfo.ImageCreationTime;
|
|
}
|
|
|
|
public override DateTime GetImageLastModificationTime()
|
|
{
|
|
return ImageInfo.ImageLastModificationTime;
|
|
}
|
|
|
|
public override string GetImageName()
|
|
{
|
|
return ImageInfo.ImageName;
|
|
}
|
|
|
|
public override string GetImageComments()
|
|
{
|
|
return ImageInfo.ImageComments;
|
|
}
|
|
|
|
public override MediaType GetMediaType()
|
|
{
|
|
return ImageInfo.MediaType;
|
|
}
|
|
|
|
#region Unsupported features
|
|
public override byte[] ReadSectorTag(ulong sectorAddress, SectorTagType tag)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, SectorTagType tag)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadDiskTag(MediaTagType tag)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSector(ulong sectorAddress, uint track)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorTag(ulong sectorAddress, uint track, SectorTagType tag)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectors(ulong sectorAddress, uint length, uint track)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, uint track, SectorTagType tag)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorLong(ulong sectorAddress)
|
|
{
|
|
throw new FeatureUnsupportedImageException("Feature not supported by image format");
|
|
}
|
|
|
|
public override byte[] ReadSectorLong(ulong sectorAddress, uint track)
|
|
{
|
|
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
|
|
}
|
|
} |