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523 lines
18 KiB
C#
523 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 : Parallels.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 Parallels 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 DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.Filters;
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namespace DiscImageChef.DiscImages
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{
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public class Parallels : ImagePlugin
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{
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#region Internal constants
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readonly byte[] parallelsMagic =
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{0x57, 0x69, 0x74, 0x68, 0x6F, 0x75, 0x74, 0x46, 0x72, 0x65, 0x65, 0x53, 0x70, 0x61, 0x63, 0x65};
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readonly byte[] parallelsExtMagic =
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{0x57, 0x69, 0x74, 0x68, 0x6F, 0x75, 0x46, 0x72, 0x65, 0x53, 0x70, 0x61, 0x63, 0x45, 0x78, 0x74};
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const uint PARALLELS_VERSION = 2;
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const uint PARALLELS_INUSE = 0x746F6E59;
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const uint PARALLELS_CLOSED = 0x312E3276;
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const uint PARALLELS_EMPTY = 0x00000001;
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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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/// <summary>
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/// Parallels disk image header, little-endian
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/// </summary>
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struct ParallelsHeader
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{
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/// <summary>
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/// Magic, <see cref="Parallels.parallelsMagic"/> or <see cref="Parallels.parallelsExtMagic"/>
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] magic;
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/// <summary>
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/// Version
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/// </summary>
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public uint version;
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/// <summary>
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/// Disk geometry parameter
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/// </summary>
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public uint heads;
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/// <summary>
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/// Disk geometry parameter
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/// </summary>
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public uint cylinders;
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/// <summary>
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/// Cluser size in sectors
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/// </summary>
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public uint cluster_size;
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/// <summary>
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/// Entries in BAT (clusters in image)
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/// </summary>
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public uint bat_entries;
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/// <summary>
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/// Disk size in sectors
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/// </summary>
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public ulong sectors;
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/// <summary>
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/// Set to <see cref="Parallels.PARALLELS_INUSE"/> if image is opened by any software, <see cref="Parallels.PARALLELS_CLOSED"/> if not, and 0 if old version
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/// </summary>
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public uint in_use;
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/// <summary>
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/// Offset in sectors to start of data
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/// </summary>
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public uint data_off;
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/// <summary>
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/// Flags
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/// </summary>
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public uint flags;
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/// <summary>
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/// Offset in sectors to format extension
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/// </summary>
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public ulong ext_off;
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}
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#endregion
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bool extended;
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ParallelsHeader pHdr;
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uint[] bat;
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long dataOffset;
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uint clusterBytes;
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bool empty;
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Stream imageStream;
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Dictionary<ulong, byte[]> sectorCache;
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const uint MAX_CACHE_SIZE = 16777216;
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uint maxCachedSectors = MAX_CACHE_SIZE / 512;
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public Parallels()
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{
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Name = "Parallels disk image";
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PluginUuid = new Guid("E314DE35-C103-48A3-AD36-990F68523C46");
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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 = "2";
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ImageInfo.ImageApplication = "Parallels";
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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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stream.Seek(0, SeekOrigin.Begin);
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if(stream.Length < 512) return false;
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byte[] pHdrB = new byte[Marshal.SizeOf(pHdr)];
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stream.Read(pHdrB, 0, Marshal.SizeOf(pHdr));
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pHdr = new ParallelsHeader();
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IntPtr headerPtr = Marshal.AllocHGlobal(Marshal.SizeOf(pHdr));
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Marshal.Copy(pHdrB, 0, headerPtr, Marshal.SizeOf(pHdr));
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pHdr = (ParallelsHeader)Marshal.PtrToStructure(headerPtr, typeof(ParallelsHeader));
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Marshal.FreeHGlobal(headerPtr);
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return parallelsMagic.SequenceEqual(pHdr.magic) || parallelsExtMagic.SequenceEqual(pHdr.magic);
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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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if(stream.Length < 512) return false;
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byte[] pHdrB = new byte[Marshal.SizeOf(pHdr)];
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stream.Read(pHdrB, 0, Marshal.SizeOf(pHdr));
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pHdr = new ParallelsHeader();
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IntPtr headerPtr = Marshal.AllocHGlobal(Marshal.SizeOf(pHdr));
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Marshal.Copy(pHdrB, 0, headerPtr, Marshal.SizeOf(pHdr));
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pHdr = (ParallelsHeader)Marshal.PtrToStructure(headerPtr, typeof(ParallelsHeader));
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Marshal.FreeHGlobal(headerPtr);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.magic = {0}", StringHandlers.CToString(pHdr.magic));
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.version = {0}", pHdr.version);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.heads = {0}", pHdr.heads);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.cylinders = {0}", pHdr.cylinders);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.cluster_size = {0}", pHdr.cluster_size);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.bat_entries = {0}", pHdr.bat_entries);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.sectors = {0}", pHdr.sectors);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.in_use = 0x{0:X8}", pHdr.in_use);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.data_off = {0}", pHdr.data_off);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.flags = {0}", pHdr.flags);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.ext_off = {0}", pHdr.ext_off);
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extended = parallelsExtMagic.SequenceEqual(pHdr.magic);
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DicConsole.DebugWriteLine("Parallels plugin", "pHdr.extended = {0}", extended);
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DicConsole.DebugWriteLine("Parallels plugin", "Reading BAT");
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bat = new uint[pHdr.bat_entries];
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byte[] batB = new byte[pHdr.bat_entries * 4];
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stream.Read(batB, 0, batB.Length);
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for(int i = 0; i < bat.Length; i++) bat[i] = BitConverter.ToUInt32(batB, i * 4);
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clusterBytes = pHdr.cluster_size * 512;
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if(pHdr.data_off > 0) dataOffset = pHdr.data_off * 512;
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else dataOffset = (stream.Position / clusterBytes + stream.Position % clusterBytes) * clusterBytes;
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sectorCache = new Dictionary<ulong, byte[]>();
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empty = (pHdr.flags & PARALLELS_EMPTY) == PARALLELS_EMPTY;
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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 = pHdr.sectors;
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ImageInfo.SectorSize = 512;
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ImageInfo.XmlMediaType = XmlMediaType.BlockMedia;
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ImageInfo.MediaType = MediaType.GENERIC_HDD;
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ImageInfo.ImageSize = pHdr.sectors * 512;
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ImageInfo.Cylinders = pHdr.cylinders;
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ImageInfo.Heads = pHdr.heads;
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ImageInfo.SectorsPerTrack = (uint)(ImageInfo.Sectors / ImageInfo.Cylinders / ImageInfo.Heads);
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imageStream = stream;
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return true;
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}
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public override byte[] ReadSector(ulong sectorAddress)
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{
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if(sectorAddress > ImageInfo.Sectors - 1)
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throw new ArgumentOutOfRangeException(nameof(sectorAddress),
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string.Format("Sector address {0} not found", sectorAddress));
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if(empty) return new byte[512];
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byte[] sector;
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if(sectorCache.TryGetValue(sectorAddress, out sector)) return sector;
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ulong index = sectorAddress / pHdr.cluster_size;
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ulong secOff = sectorAddress % pHdr.cluster_size;
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uint batOff = bat[index];
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ulong imageOff;
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if(batOff == 0) return new byte[512];
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if(extended) imageOff = batOff * clusterBytes;
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else imageOff = batOff * 512;
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byte[] cluster = new byte[clusterBytes];
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imageStream.Seek((long)imageOff, SeekOrigin.Begin);
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imageStream.Read(cluster, 0, (int)clusterBytes);
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sector = new byte[512];
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Array.Copy(cluster, (int)(secOff * 512), sector, 0, 512);
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if(sectorCache.Count > maxCachedSectors) sectorCache.Clear();
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sectorCache.Add(sectorAddress, sector);
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return 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),
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string.Format("Sector address {0} not found", sectorAddress));
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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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if(empty) return new byte[512 * length];
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MemoryStream ms = 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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ms.Write(sector, 0, sector.Length);
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}
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return ms.ToArray();
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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 "Parallels";
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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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#region Unsupported features
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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[] 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[] 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[] ReadSector(ulong sectorAddress, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorTag(ulong sectorAddress, uint track, SectorTagType tag)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectors(ulong sectorAddress, uint length, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, uint track, SectorTagType tag)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] 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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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorsLong(ulong sectorAddress, uint length)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override byte[] ReadSectorsLong(ulong sectorAddress, uint length, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override string GetMediaManufacturer()
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{
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return null;
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}
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public override string GetMediaModel()
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{
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return null;
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}
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public override string GetMediaSerialNumber()
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{
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return null;
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}
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public override string GetMediaBarcode()
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{
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return null;
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}
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public override string GetMediaPartNumber()
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{
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return null;
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}
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public override int GetMediaSequence()
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{
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return 0;
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}
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public override int GetLastDiskSequence()
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{
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return 0;
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}
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public override string GetDriveManufacturer()
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{
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return null;
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}
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public override string GetDriveModel()
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{
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return null;
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}
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public override string GetDriveSerialNumber()
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{
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return null;
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}
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public override List<Partition> GetPartitions()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Track> GetTracks()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Track> GetSessionTracks(Session session)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Track> GetSessionTracks(ushort session)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override List<Session> GetSessions()
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override bool? VerifySector(ulong sectorAddress)
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{
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return null;
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}
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public override bool? VerifySector(ulong sectorAddress, uint track)
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{
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throw new FeatureUnsupportedImageException("Feature not supported by image format");
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}
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public override bool? VerifySectors(ulong sectorAddress, uint length, 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 override 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 override bool? VerifyMediaImage()
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{
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return null;
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}
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#endregion
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}
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} |