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529 lines
20 KiB
C#
529 lines
20 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : VDI.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 VirtualBox 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.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 Vdi : ImagePlugin
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{
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#region Internal constants
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const uint VDI_MAGIC = 0xBEDA107F;
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const uint VDI_EMPTY = 0xFFFFFFFF;
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const string ORACLE_VDI = "<<< Oracle VM VirtualBox Disk Image >>>\n";
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const string QEMUVDI = "<<< QEMU VM Virtual Disk Image >>>\n";
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const string SUN_OLD_VDI = "<<< Sun xVM VirtualBox Disk Image >>>\n";
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const string SUN_VDI = "<<< Sun VirtualBox Disk Image >>>\n";
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const string INNOTEK_VDI = "<<< innotek VirtualBox Disk Image >>>\n";
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const string INNOTEK_OLD_VDI = "<<< InnoTek VirtualBox Disk Image >>>\n";
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#endregion
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#region Internal Structures
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/// <summary>
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/// VDI disk image header, little-endian
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct VdiHeader
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{
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)] public string creator;
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/// <summary>
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/// Magic, <see cref="Vdi.VDI_MAGIC"/>
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/// </summary>
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public uint magic;
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/// <summary>
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/// Version
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/// </summary>
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public ushort majorVersion;
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public ushort minorVersion;
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public uint headerSize;
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public uint imageType;
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public uint imageFlags;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)] public string description;
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public uint offsetBlocks;
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public uint offsetData;
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public uint cylinders;
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public uint heads;
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public uint spt;
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public uint sectorSize;
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public uint unused;
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public ulong size;
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public uint blockSize;
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public uint blockExtraData;
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public uint blocks;
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public uint allocatedBlocks;
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public Guid uuid;
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public Guid snapshotUuid;
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public Guid linkUuid;
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public Guid parentUuid;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 56)] public byte[] garbage;
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}
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#endregion
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VdiHeader vHdr;
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uint[] ibm;
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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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const uint MAX_CACHED_SECTORS = MAX_CACHE_SIZE / 512;
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public Vdi()
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{
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Name = "VirtualBox 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 = 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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stream.Seek(0, SeekOrigin.Begin);
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if(stream.Length < 512) return false;
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byte[] vHdrB = new byte[Marshal.SizeOf(vHdr)];
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stream.Read(vHdrB, 0, Marshal.SizeOf(vHdr));
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vHdr = new VdiHeader();
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IntPtr headerPtr = Marshal.AllocHGlobal(Marshal.SizeOf(vHdr));
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Marshal.Copy(vHdrB, 0, headerPtr, Marshal.SizeOf(vHdr));
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vHdr = (VdiHeader)Marshal.PtrToStructure(headerPtr, typeof(VdiHeader));
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Marshal.FreeHGlobal(headerPtr);
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return vHdr.magic == VDI_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[] vHdrB = new byte[Marshal.SizeOf(vHdr)];
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stream.Read(vHdrB, 0, Marshal.SizeOf(vHdr));
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vHdr = new VdiHeader();
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IntPtr headerPtr = Marshal.AllocHGlobal(Marshal.SizeOf(vHdr));
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Marshal.Copy(vHdrB, 0, headerPtr, Marshal.SizeOf(vHdr));
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vHdr = (VdiHeader)Marshal.PtrToStructure(headerPtr, typeof(VdiHeader));
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Marshal.FreeHGlobal(headerPtr);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.creator = {0}", vHdr.creator);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.magic = {0}", vHdr.magic);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.version = {0}.{1}", vHdr.majorVersion,
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vHdr.minorVersion);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.headerSize = {0}", vHdr.headerSize);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.imageType = {0}", vHdr.imageType);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.imageFlags = {0}", vHdr.imageFlags);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.description = {0}", vHdr.description);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.offsetBlocks = {0}", vHdr.offsetBlocks);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.offsetData = {0}", vHdr.offsetData);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.cylinders = {0}", vHdr.cylinders);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.heads = {0}", vHdr.heads);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.spt = {0}", vHdr.spt);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.sectorSize = {0}", vHdr.sectorSize);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.size = {0}", vHdr.size);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.blockSize = {0}", vHdr.blockSize);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.blockExtraData = {0}", vHdr.blockExtraData);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.blocks = {0}", vHdr.blocks);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.allocatedBlocks = {0}", vHdr.allocatedBlocks);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.uuid = {0}", vHdr.uuid);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.snapshotUuid = {0}", vHdr.snapshotUuid);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.linkUuid = {0}", vHdr.linkUuid);
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DicConsole.DebugWriteLine("VirtualBox plugin", "vHdr.parentUuid = {0}", vHdr.parentUuid);
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DicConsole.DebugWriteLine("VirtualBox plugin", "Reading Image Block Map");
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stream.Seek(vHdr.offsetBlocks, SeekOrigin.Begin);
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ibm = new uint[vHdr.blocks];
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byte[] ibmB = new byte[vHdr.blocks * 4];
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stream.Read(ibmB, 0, ibmB.Length);
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for(int i = 0; i < ibm.Length; i++) ibm[i] = BitConverter.ToUInt32(ibmB, i * 4);
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sectorCache = new Dictionary<ulong, byte[]>();
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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 = vHdr.size / vHdr.sectorSize;
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ImageInfo.ImageSize = vHdr.size;
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ImageInfo.SectorSize = vHdr.sectorSize;
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ImageInfo.XmlMediaType = XmlMediaType.BlockMedia;
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ImageInfo.MediaType = MediaType.GENERIC_HDD;
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ImageInfo.ImageComments = vHdr.description;
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ImageInfo.ImageVersion = string.Format("{0}.{1}", vHdr.majorVersion, vHdr.minorVersion);
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switch(vHdr.creator)
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{
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case SUN_VDI:
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ImageInfo.ImageApplication = "Sun VirtualBox";
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break;
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case SUN_OLD_VDI:
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ImageInfo.ImageApplication = "Sun xVM";
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break;
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case ORACLE_VDI:
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ImageInfo.ImageApplication = "Oracle VirtualBox";
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break;
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case QEMUVDI:
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ImageInfo.ImageApplication = "QEMU";
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break;
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case INNOTEK_VDI:
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case INNOTEK_OLD_VDI:
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ImageInfo.ImageApplication = "innotek VirtualBox";
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break;
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}
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imageStream = stream;
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ImageInfo.Cylinders = vHdr.cylinders;
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ImageInfo.Heads = vHdr.heads;
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ImageInfo.SectorsPerTrack = vHdr.spt;
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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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byte[] sector;
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if(sectorCache.TryGetValue(sectorAddress, out sector)) return sector;
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ulong index = sectorAddress * vHdr.sectorSize / vHdr.blockSize;
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ulong secOff = sectorAddress * vHdr.sectorSize % vHdr.blockSize;
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uint ibmOff = ibm[index];
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ulong imageOff;
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if(ibmOff == VDI_EMPTY) return new byte[vHdr.sectorSize];
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imageOff = vHdr.offsetData + ibmOff * vHdr.blockSize;
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byte[] cluster = new byte[vHdr.blockSize];
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imageStream.Seek((long)imageOff, SeekOrigin.Begin);
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imageStream.Read(cluster, 0, (int)vHdr.blockSize);
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sector = new byte[vHdr.sectorSize];
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Array.Copy(cluster, (int)secOff, sector, 0, vHdr.sectorSize);
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if(sectorCache.Count > MAX_CACHED_SECTORS) 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),
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string
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.Format("Requested more sectors ({0} + {1}) than available ({2})",
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sectorAddress, length, ImageInfo.Sectors));
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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 "VDI";
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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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}
|
|
|
|
public override bool? VerifyMediaImage()
|
|
{
|
|
return null;
|
|
}
|
|
#endregion
|
|
}
|
|
} |