mirror of
https://github.com/aaru-dps/Aaru.Server.git
synced 2025-12-16 19:24:27 +00:00
REFACTOR: Final cleanup of DiscImageChef.DiscImages.
This commit is contained in:
@@ -39,18 +39,13 @@ using DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.Filters;
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using Extents;
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#pragma warning disable 649
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namespace DiscImageChef.DiscImages
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{
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public class Partimage : ImagePlugin
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{
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#region Internal constants
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readonly byte[] partimageMagic =
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{
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0x50, 0x61, 0x52, 0x74, 0x49, 0x6D, 0x41, 0x67, 0x45, 0x2D, 0x56, 0x6F, 0x4C, 0x75, 0x4D, 0x65, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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const int MAX_DESCRIPTION = 4096;
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const int MAX_HOSTNAMESIZE = 128;
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const int MAX_DEVICENAMELEN = 512;
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@@ -77,187 +72,25 @@ namespace DiscImageChef.DiscImages
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const string MAGIC_BEGIN_EXT008 = "MAGIC-BEGIN-EXT008"; // reserved for future use
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const string MAGIC_BEGIN_EXT009 = "MAGIC-BEGIN-EXT009"; // reserved for future use
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const string MAGIC_BEGIN_VOLUME = "PaRtImAgE-VoLuMe";
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#endregion
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#region Internal Structures
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/// <summary>
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/// Partimage disk image header, little-endian
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct PartimageHeader
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{
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/// <summary>
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/// Magic, <see cref="Partimage.partimageMagic"/>
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] magic;
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/// <summary>
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/// Source filesystem
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] public byte[] version;
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/// <summary>
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/// Volume number
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/// </summary>
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public uint volumeNumber;
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/// <summary>
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/// Image identifier
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/// </summary>
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public ulong identificator;
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/// <summary>
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/// Empty space
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 404)] public byte[] reserved;
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}
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struct PortableTm
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{
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public uint Second;
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public uint Minute;
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public uint Hour;
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public uint DayOfMonth;
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public uint Month;
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public uint Year;
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public uint DayOfWeek;
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public uint DayOfYear;
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public uint IsDst;
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public uint GmtOff;
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public uint Timezone;
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}
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enum PCompression : uint
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{
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None = 0,
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Gzip = 1,
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Bzip2 = 2,
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Lzo = 3
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}
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enum PEncryption : uint
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{
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None = 0
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}
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/// <summary>
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/// Partimage CMainHeader
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct PartimageMainHeader
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)]
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public byte[] szFileSystem; // ext2fs, ntfs, reiserfs, ...
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DESCRIPTION)]
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public byte[] szPartDescription; // user description of the partition
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DEVICENAMELEN)]
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public byte[] szOriginalDevice; // original partition name
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4095)]
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public byte[] szFirstImageFilepath; //MAXPATHLEN]; // for splitted image files
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// system and hardware infos
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameSysname;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameNodename;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameRelease;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameVersion;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameMachine;
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public PCompression dwCompression; // COMPRESS_XXXXXX
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public uint dwMainFlags;
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public PortableTm dateCreate; // date of image creation
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public ulong qwPartSize; // size of the partition in bytes
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_HOSTNAMESIZE)] public byte[] szHostname;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] public byte[] szVersion; // version of the image file
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// MBR backup
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public uint dwMbrCount; // how many MBR are saved in the image file
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public uint dwMbrSize; // size of a MBR record (allow to change the size in the next versions)
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// future encryption support
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public PEncryption dwEncryptAlgo; // algo used to encrypt data
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] cHashTestKey; // used to test the password without giving it
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// reserved for future use (save DiskLabel, Extended partitions, ...)
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public uint dwReservedFuture000;
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public uint dwReservedFuture001;
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public uint dwReservedFuture002;
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public uint dwReservedFuture003;
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public uint dwReservedFuture004;
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public uint dwReservedFuture005;
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public uint dwReservedFuture006;
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public uint dwReservedFuture007;
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public uint dwReservedFuture008;
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public uint dwReservedFuture009;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6524)]
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public byte[] cReserved; // Adjust to fit with total header size
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public uint crc;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CMbr // must be 1024
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MBR_SIZE_WHOLE)] public byte[] cData;
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public uint dwDataCRC;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DEVICENAMELEN)] public byte[] szDevice; // ex: "hda"
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// disk identificators
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ulong qwBlocksCount;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DESC_MODEL)] public byte[] szDescModel;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 884)] public byte[] cReserved; // for future use
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//public byte[] szDescGeometry[MAX_DESC_GEOMETRY];
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//public byte[] szDescIdentify[MAX_DESC_IDENTIFY];
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CCheck
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] byte[] cMagic; // must be 'C','H','K'
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public uint dwCRC; // CRC of the CHECK_FREQUENCY blocks
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public ulong qwPos; // number of the last block written
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CLocalHeader // size must be 16384 (adjust the reserved data)
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{
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public ulong qwBlockSize;
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public ulong qwUsedBlocks;
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public ulong qwBlocksCount;
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public ulong qwBitmapSize; // bytes in the bitmap
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public ulong qwBadBlocksCount;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] public byte[] szLabel;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16280)]
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public byte[] cReserved; // Adjust to fit with total header size
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public uint crc;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CMainTail // size must be 16384 (adjust the reserved data)
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{
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public ulong qwCRC;
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public uint dwVolumeNumber;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16372)]
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public byte[] cReserved; // Adjust to fit with total header size
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}
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#endregion
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PartimageHeader cVolumeHeader;
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PartimageMainHeader cMainHeader;
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byte[] bitmap;
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Stream imageStream;
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long dataOff;
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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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readonly byte[] partimageMagic =
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{
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0x50, 0x61, 0x52, 0x74, 0x49, 0x6D, 0x41, 0x67, 0x45, 0x2D, 0x56, 0x6F, 0x4C, 0x75, 0x4D, 0x65, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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byte[] bitmap;
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PartimageMainHeader cMainHeader;
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PartimageHeader cVolumeHeader;
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long dataOff;
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ExtentsULong extents;
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Dictionary<ulong, ulong> extentsOff;
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Stream imageStream;
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Dictionary<ulong, byte[]> sectorCache;
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public Partimage()
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{
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@@ -510,7 +343,7 @@ namespace DiscImageChef.DiscImages
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DateTime start = DateTime.Now;
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extents = new ExtentsULong();
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extentsOff = new Dictionary<ulong, ulong>();
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bool current = (bitmap[0] & (1 << 0 % 8)) != 0;
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bool current = (bitmap[0] & (1 << (0 % 8))) != 0;
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ulong blockOff = 0;
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ulong extentStart = 0;
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@@ -571,7 +404,8 @@ namespace DiscImageChef.DiscImages
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throw new ArgumentOutOfRangeException(nameof(sectorAddress),
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$"Sector address {sectorAddress} not found");
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if((bitmap[sectorAddress / 8] & (1 << (int)(sectorAddress % 8))) == 0) return new byte[ImageInfo.SectorSize];
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if((bitmap[sectorAddress / 8] & (1 << (int)(sectorAddress % 8))) == 0)
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return new byte[ImageInfo.SectorSize];
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if(sectorCache.TryGetValue(sectorAddress, out byte[] sector)) return sector;
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@@ -701,7 +535,6 @@ namespace DiscImageChef.DiscImages
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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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@@ -863,6 +696,169 @@ namespace DiscImageChef.DiscImages
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{
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return null;
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}
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#endregion
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/// <summary>
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/// Partimage disk image header, little-endian
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct PartimageHeader
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{
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/// <summary>
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/// Magic, <see cref="Partimage.partimageMagic" />
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] magic;
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/// <summary>
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/// Source filesystem
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] public byte[] version;
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/// <summary>
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/// Volume number
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/// </summary>
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public uint volumeNumber;
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/// <summary>
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/// Image identifier
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/// </summary>
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public ulong identificator;
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/// <summary>
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/// Empty space
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/// </summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 404)] public byte[] reserved;
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}
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struct PortableTm
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{
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public uint Second;
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public uint Minute;
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public uint Hour;
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public uint DayOfMonth;
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public uint Month;
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public uint Year;
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public uint DayOfWeek;
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public uint DayOfYear;
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public uint IsDst;
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public uint GmtOff;
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public uint Timezone;
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}
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enum PCompression : uint
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{
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None = 0,
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Gzip = 1,
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Bzip2 = 2,
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Lzo = 3
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}
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enum PEncryption : uint
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{
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None = 0
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}
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/// <summary>
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/// Partimage CMainHeader
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct PartimageMainHeader
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)]
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public byte[] szFileSystem; // ext2fs, ntfs, reiserfs, ...
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DESCRIPTION)]
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public byte[] szPartDescription; // user description of the partition
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DEVICENAMELEN)]
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public byte[] szOriginalDevice; // original partition name
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4095)]
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public byte[] szFirstImageFilepath; //MAXPATHLEN]; // for splitted image files
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// system and hardware infos
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameSysname;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameNodename;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameRelease;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameVersion;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_UNAMEINFOLEN)] public byte[] szUnameMachine;
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public PCompression dwCompression; // COMPRESS_XXXXXX
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public uint dwMainFlags;
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public PortableTm dateCreate; // date of image creation
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public ulong qwPartSize; // size of the partition in bytes
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_HOSTNAMESIZE)] public byte[] szHostname;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] public byte[] szVersion; // version of the image file
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// MBR backup
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public uint dwMbrCount; // how many MBR are saved in the image file
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public uint dwMbrSize; // size of a MBR record (allow to change the size in the next versions)
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// future encryption support
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public PEncryption dwEncryptAlgo; // algo used to encrypt data
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] cHashTestKey; // used to test the password without giving it
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// reserved for future use (save DiskLabel, Extended partitions, ...)
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public uint dwReservedFuture000;
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public uint dwReservedFuture001;
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public uint dwReservedFuture002;
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public uint dwReservedFuture003;
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public uint dwReservedFuture004;
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public uint dwReservedFuture005;
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public uint dwReservedFuture006;
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public uint dwReservedFuture007;
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public uint dwReservedFuture008;
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public uint dwReservedFuture009;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6524)]
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public byte[] cReserved; // Adjust to fit with total header size
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public uint crc;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CMbr // must be 1024
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MBR_SIZE_WHOLE)] public byte[] cData;
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public uint dwDataCRC;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DEVICENAMELEN)] public byte[] szDevice; // ex: "hda"
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// disk identificators
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ulong qwBlocksCount;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_DESC_MODEL)] public byte[] szDescModel;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 884)] public byte[] cReserved; // for future use
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//public byte[] szDescGeometry[MAX_DESC_GEOMETRY];
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//public byte[] szDescIdentify[MAX_DESC_IDENTIFY];
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CCheck
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] byte[] cMagic; // must be 'C','H','K'
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public uint dwCRC; // CRC of the CHECK_FREQUENCY blocks
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public ulong qwPos; // number of the last block written
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CLocalHeader // size must be 16384 (adjust the reserved data)
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{
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public ulong qwBlockSize;
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public ulong qwUsedBlocks;
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public ulong qwBlocksCount;
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public ulong qwBitmapSize; // bytes in the bitmap
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public ulong qwBadBlocksCount;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] public byte[] szLabel;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16280)]
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public byte[] cReserved; // Adjust to fit with total header size
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public uint crc;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct CMainTail // size must be 16384 (adjust the reserved data)
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{
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public ulong qwCRC;
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public uint dwVolumeNumber;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16372)]
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public byte[] cReserved; // Adjust to fit with total header size
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}
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}
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}
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