public bool Open(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
if (stream.Length < 512)
{
return(false);
}
byte[] qHdrB = new byte[48];
stream.Read(qHdrB, 0, 48);
qHdr = Marshal.SpanToStructureBigEndian <QCowHeader>(qHdrB);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.magic = 0x{0:X8}", qHdr.magic);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.version = {0}", qHdr.version);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.backing_file_offset = {0}", qHdr.backing_file_offset);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.backing_file_size = {0}", qHdr.backing_file_size);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.mtime = {0}", qHdr.mtime);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.size = {0}", qHdr.size);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.cluster_bits = {0}", qHdr.cluster_bits);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l2_bits = {0}", qHdr.l2_bits);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.padding = {0}", qHdr.padding);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.crypt_method = {0}", qHdr.crypt_method);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l1_table_offset = {0}", qHdr.l1_table_offset);
if (qHdr.size <= 1)
{
throw new ArgumentOutOfRangeException(nameof(qHdr.size), "Image size is too small");
}
if (qHdr.cluster_bits < 9 || qHdr.cluster_bits > 16)
{
throw new ArgumentOutOfRangeException(nameof(qHdr.cluster_bits),
"Cluster size must be between 512 bytes and 64 Kbytes");
}
if (qHdr.l2_bits < 9 - 3 || qHdr.l2_bits > 16 - 3)
{
throw new ArgumentOutOfRangeException(nameof(qHdr.l2_bits),
"L2 size must be between 512 bytes and 64 Kbytes");
}
if (qHdr.crypt_method > QCOW_ENCRYPTION_AES)
{
throw new ArgumentOutOfRangeException(nameof(qHdr.crypt_method), "Invalid encryption method");
}
if (qHdr.crypt_method > QCOW_ENCRYPTION_NONE)
{
throw new NotImplementedException("AES encrypted images not yet supported");
}
if (qHdr.backing_file_offset != 0)
{
throw new NotImplementedException("Differencing images not yet supported");
}
int shift = qHdr.cluster_bits + qHdr.l2_bits;
if (qHdr.size > ulong.MaxValue - (ulong)(1 << shift))
{
throw new ArgumentOutOfRangeException(nameof(qHdr.size), "Image is too large");
}
clusterSize = 1 << qHdr.cluster_bits;
clusterSectors = 1 << (qHdr.cluster_bits - 9);
l1Size = (uint)((qHdr.size + (ulong)(1 << shift) - 1) >> shift);
l2Size = 1 << qHdr.l2_bits;
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.clusterSize = {0}", clusterSize);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.clusterSectors = {0}", clusterSectors);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Size = {0}", l1Size);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l2Size = {0}", l2Size);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.sectors = {0}", imageInfo.Sectors);
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
byte[] l1TableB = new byte[l1Size * 8];
stream.Seek((long)qHdr.l1_table_offset, SeekOrigin.Begin);
stream.Read(l1TableB, 0, (int)l1Size * 8);
l1Table = MemoryMarshal.Cast <byte, ulong>(l1TableB).ToArray();
DicConsole.DebugWriteLine("QCOW plugin", "Reading L1 table");
for (long i = 0; i < l1Table.LongLength; i++)
{
l1Table[i] = Swapping.Swap(l1Table[i]);
}
l1Mask = 0;
int c = 0;
l1Shift = qHdr.l2_bits + qHdr.cluster_bits;
for (int i = 0; i < 64; i++)
{
l1Mask <<= 1;
if (c >= 64 - l1Shift)
{
continue;
}
l1Mask += 1;
c++;
}
l2Mask = 0;
for (int i = 0; i < qHdr.l2_bits; i++)
{
l2Mask = (l2Mask << 1) + 1;
}
l2Mask <<= qHdr.cluster_bits;
sectorMask = 0;
for (int i = 0; i < qHdr.cluster_bits; i++)
{
sectorMask = (sectorMask << 1) + 1;
}
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Mask = {0:X}", l1Mask);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Shift = {0}", l1Shift);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.l2Mask = {0:X}", l2Mask);
DicConsole.DebugWriteLine("QCOW plugin", "qHdr.sectorMask = {0:X}", sectorMask);
maxL2TableCache = MAX_CACHE_SIZE / (l2Size * 8);
maxClusterCache = MAX_CACHE_SIZE / clusterSize;
imageStream = stream;
sectorCache = new Dictionary <ulong, byte[]>();
l2TableCache = new Dictionary <ulong, ulong[]>();
clusterCache = new Dictionary <ulong, byte[]>();
imageInfo.CreationTime = imageFilter.GetCreationTime();
imageInfo.LastModificationTime = qHdr.mtime > 0
? DateHandlers.UnixUnsignedToDateTime(qHdr.mtime)
: imageFilter.GetLastWriteTime();
imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
imageInfo.Sectors = qHdr.size / 512;
imageInfo.SectorSize = 512;
imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
imageInfo.MediaType = MediaType.GENERIC_HDD;
imageInfo.ImageSize = qHdr.size;
imageInfo.Cylinders = (uint)(imageInfo.Sectors / 16 / 63);
imageInfo.Heads = 16;
imageInfo.SectorsPerTrack = 63;
return(true);
}
public bool Open(IFilter imageFilter)
{
Stream imageStream = imageFilter.GetDataForkStream();
byte[] header = new byte[512];
byte[] footer;
imageStream.Seek(0, SeekOrigin.Begin);
imageStream.Read(header, 0, 512);
if (imageStream.Length % 2 == 0)
{
footer = new byte[512];
imageStream.Seek(-512, SeekOrigin.End);
imageStream.Read(footer, 0, 512);
}
else
{
footer = new byte[511];
imageStream.Seek(-511, SeekOrigin.End);
imageStream.Read(footer, 0, 511);
}
uint headerChecksum = BigEndianBitConverter.ToUInt32(header, 0x40);
uint footerChecksum = BigEndianBitConverter.ToUInt32(footer, 0x40);
ulong headerCookie = BigEndianBitConverter.ToUInt64(header, 0);
ulong footerCookie = BigEndianBitConverter.ToUInt64(footer, 0);
header[0x40] = 0;
header[0x41] = 0;
header[0x42] = 0;
header[0x43] = 0;
footer[0x40] = 0;
footer[0x41] = 0;
footer[0x42] = 0;
footer[0x43] = 0;
uint headerCalculatedChecksum = VhdChecksum(header);
uint footerCalculatedChecksum = VhdChecksum(footer);
AaruConsole.DebugWriteLine("VirtualPC plugin", "Header checksum = 0x{0:X8}, calculated = 0x{1:X8}",
headerChecksum, headerCalculatedChecksum);
AaruConsole.DebugWriteLine("VirtualPC plugin", "Header checksum = 0x{0:X8}, calculated = 0x{1:X8}",
footerChecksum, footerCalculatedChecksum);
byte[] usableHeader;
uint usableChecksum;
if (headerCookie == IMAGE_COOKIE &&
headerChecksum == headerCalculatedChecksum)
{
usableHeader = header;
usableChecksum = headerChecksum;
}
else if (footerCookie == IMAGE_COOKIE &&
footerChecksum == footerCalculatedChecksum)
{
usableHeader = footer;
usableChecksum = footerChecksum;
}
else
{
throw new
ImageNotSupportedException("(VirtualPC plugin): Both header and footer are corrupt, image cannot be opened.");
}
_thisFooter = new HardDiskFooter
{
Cookie = BigEndianBitConverter.ToUInt64(usableHeader, 0x00),
Features = BigEndianBitConverter.ToUInt32(usableHeader, 0x08),
Version = BigEndianBitConverter.ToUInt32(usableHeader, 0x0C),
Offset = BigEndianBitConverter.ToUInt64(usableHeader, 0x10),
Timestamp = BigEndianBitConverter.ToUInt32(usableHeader, 0x18),
CreatorApplication = BigEndianBitConverter.ToUInt32(usableHeader, 0x1C),
CreatorVersion = BigEndianBitConverter.ToUInt32(usableHeader, 0x20),
CreatorHostOs = BigEndianBitConverter.ToUInt32(usableHeader, 0x24),
OriginalSize = BigEndianBitConverter.ToUInt64(usableHeader, 0x28),
CurrentSize = BigEndianBitConverter.ToUInt64(usableHeader, 0x30),
DiskGeometry = BigEndianBitConverter.ToUInt32(usableHeader, 0x38),
DiskType = BigEndianBitConverter.ToUInt32(usableHeader, 0x3C),
Checksum = usableChecksum,
UniqueId = BigEndianBitConverter.ToGuid(usableHeader, 0x44),
SavedState = usableHeader[0x54],
Reserved = new byte[usableHeader.Length - 0x55]
};
Array.Copy(usableHeader, 0x55, _thisFooter.Reserved, 0, usableHeader.Length - 0x55);
_thisDateTime = new DateTime(2000, 1, 1, 0, 0, 0, DateTimeKind.Utc);
_thisDateTime = _thisDateTime.AddSeconds(_thisFooter.Timestamp);
var sha1Ctx = new Sha1Context();
sha1Ctx.Update(_thisFooter.Reserved);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.cookie = 0x{0:X8}", _thisFooter.Cookie);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.features = 0x{0:X8}", _thisFooter.Features);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.version = 0x{0:X8}", _thisFooter.Version);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.offset = {0}", _thisFooter.Offset);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.timestamp = 0x{0:X8} ({1})", _thisFooter.Timestamp,
_thisDateTime);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.creatorApplication = 0x{0:X8} (\"{1}\")",
_thisFooter.CreatorApplication,
Encoding.ASCII.GetString(BigEndianBitConverter.GetBytes(_thisFooter.
CreatorApplication)));
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.creatorVersion = 0x{0:X8}",
_thisFooter.CreatorVersion);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.creatorHostOS = 0x{0:X8} (\"{1}\")",
_thisFooter.CreatorHostOs,
Encoding.ASCII.GetString(BigEndianBitConverter.
GetBytes(_thisFooter.CreatorHostOs)));
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.originalSize = {0}", _thisFooter.OriginalSize);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.currentSize = {0}", _thisFooter.CurrentSize);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.diskGeometry = 0x{0:X8} (C/H/S: {1}/{2}/{3})",
_thisFooter.DiskGeometry, (_thisFooter.DiskGeometry & 0xFFFF0000) >> 16,
(_thisFooter.DiskGeometry & 0xFF00) >> 8, _thisFooter.DiskGeometry & 0xFF);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.diskType = 0x{0:X8}", _thisFooter.DiskType);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.checksum = 0x{0:X8}", _thisFooter.Checksum);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.uniqueId = {0}", _thisFooter.UniqueId);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.savedState = 0x{0:X2}", _thisFooter.SavedState);
AaruConsole.DebugWriteLine("VirtualPC plugin", "footer.reserved's SHA1 = 0x{0}", sha1Ctx.End());
if (_thisFooter.Version == VERSION1)
{
_imageInfo.Version = "1.0";
}
else
{
throw new
ImageNotSupportedException($"(VirtualPC plugin): Unknown image type {_thisFooter.DiskType} found. Please submit a bug with an example image.");
}
switch (_thisFooter.CreatorApplication)
{
case CREATOR_QEMU:
{
_imageInfo.Application = "QEMU";
// QEMU always set same version
_imageInfo.ApplicationVersion = "Unknown";
break;
}
case CREATOR_VIRTUAL_BOX:
{
_imageInfo.ApplicationVersion =
$"{(_thisFooter.CreatorVersion & 0xFFFF0000) >> 16}.{_thisFooter.CreatorVersion & 0x0000FFFF:D2}";
switch (_thisFooter.CreatorHostOs)
{
case CREATOR_MACINTOSH:
case CREATOR_MACINTOSH_OLD:
_imageInfo.Application = "VirtualBox for Mac";
break;
case CREATOR_WINDOWS:
// VirtualBox uses Windows creator for any other OS
_imageInfo.Application = "VirtualBox";
break;
default:
_imageInfo.Application =
$"VirtualBox for unknown OS \"{Encoding.ASCII.GetString(BigEndianBitConverter.GetBytes(_thisFooter.CreatorHostOs))}\"";
break;
}
break;
}
case CREATOR_VIRTUAL_SERVER:
{
_imageInfo.Application = "Microsoft Virtual Server";
switch (_thisFooter.CreatorVersion)
{
case VERSION_VIRTUAL_SERVER2004:
_imageInfo.ApplicationVersion = "2004";
break;
default:
_imageInfo.ApplicationVersion = $"Unknown version 0x{_thisFooter.CreatorVersion:X8}";
break;
}
break;
}
case CREATOR_VIRTUAL_PC:
{
switch (_thisFooter.CreatorHostOs)
{
case CREATOR_MACINTOSH:
case CREATOR_MACINTOSH_OLD:
switch (_thisFooter.CreatorVersion)
{
case VERSION_VIRTUAL_PC_MAC:
_imageInfo.Application = "Connectix Virtual PC";
_imageInfo.ApplicationVersion = "5, 6 or 7";
break;
default:
_imageInfo.ApplicationVersion =
$"Unknown version 0x{_thisFooter.CreatorVersion:X8}";
break;
}
break;
case CREATOR_WINDOWS:
switch (_thisFooter.CreatorVersion)
{
case VERSION_VIRTUAL_PC_MAC:
_imageInfo.Application = "Connectix Virtual PC";
_imageInfo.ApplicationVersion = "5, 6 or 7";
break;
case VERSION_VIRTUAL_PC2004:
_imageInfo.Application = "Microsoft Virtual PC";
_imageInfo.ApplicationVersion = "2004";
break;
case VERSION_VIRTUAL_PC2007:
_imageInfo.Application = "Microsoft Virtual PC";
_imageInfo.ApplicationVersion = "2007";
break;
default:
_imageInfo.ApplicationVersion =
$"Unknown version 0x{_thisFooter.CreatorVersion:X8}";
break;
}
break;
default:
_imageInfo.Application =
$"Virtual PC for unknown OS \"{Encoding.ASCII.GetString(BigEndianBitConverter.GetBytes(_thisFooter.CreatorHostOs))}\"";
_imageInfo.ApplicationVersion = $"Unknown version 0x{_thisFooter.CreatorVersion:X8}";
break;
}
break;
}
case CREATOR_DISCIMAGECHEF:
{
_imageInfo.Application = "DiscImageChef";
_imageInfo.ApplicationVersion =
$"{(_thisFooter.CreatorVersion & 0xFF000000) >> 24}.{(_thisFooter.CreatorVersion & 0xFF0000) >> 16}.{(_thisFooter.CreatorVersion & 0xFF00) >> 8}.{_thisFooter.CreatorVersion & 0xFF}";
}
break;
case CREATOR_AARU:
{
_imageInfo.Application = "Aaru";
_imageInfo.ApplicationVersion =
$"{(_thisFooter.CreatorVersion & 0xFF000000) >> 24}.{(_thisFooter.CreatorVersion & 0xFF0000) >> 16}.{(_thisFooter.CreatorVersion & 0xFF00) >> 8}.{_thisFooter.CreatorVersion & 0xFF}";
}
break;
default:
{
_imageInfo.Application =
$"Unknown application \"{Encoding.ASCII.GetString(BigEndianBitConverter.GetBytes(_thisFooter.CreatorHostOs))}\"";
_imageInfo.ApplicationVersion = $"Unknown version 0x{_thisFooter.CreatorVersion:X8}";
break;
}
}
_thisFilter = imageFilter;
_imageInfo.ImageSize = _thisFooter.CurrentSize;
_imageInfo.Sectors = _thisFooter.CurrentSize / 512;
_imageInfo.SectorSize = 512;
_imageInfo.CreationTime = imageFilter.GetCreationTime();
_imageInfo.LastModificationTime = _thisDateTime;
_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
_imageInfo.Cylinders = (_thisFooter.DiskGeometry & 0xFFFF0000) >> 16;
_imageInfo.Heads = (_thisFooter.DiskGeometry & 0xFF00) >> 8;
_imageInfo.SectorsPerTrack = _thisFooter.DiskGeometry & 0xFF;
if (_thisFooter.DiskType == TYPE_DYNAMIC ||
_thisFooter.DiskType == TYPE_DIFFERENCING)
{
imageStream.Seek((long)_thisFooter.Offset, SeekOrigin.Begin);
byte[] dynamicBytes = new byte[1024];
imageStream.Read(dynamicBytes, 0, 1024);
uint dynamicChecksum = BigEndianBitConverter.ToUInt32(dynamicBytes, 0x24);
dynamicBytes[0x24] = 0;
dynamicBytes[0x25] = 0;
dynamicBytes[0x26] = 0;
dynamicBytes[0x27] = 0;
uint dynamicChecksumCalculated = VhdChecksum(dynamicBytes);
AaruConsole.DebugWriteLine("VirtualPC plugin",
"Dynamic header checksum = 0x{0:X8}, calculated = 0x{1:X8}", dynamicChecksum,
dynamicChecksumCalculated);
if (dynamicChecksum != dynamicChecksumCalculated)
{
throw new
ImageNotSupportedException("(VirtualPC plugin): Both header and footer are corrupt, image cannot be opened.");
}
_thisDynamic = new DynamicDiskHeader
{
LocatorEntries = new ParentLocatorEntry[8],
Reserved2 = new byte[256]
};
for (int i = 0; i < 8; i++)
{
_thisDynamic.LocatorEntries[i] = new ParentLocatorEntry();
}
_thisDynamic.Cookie = BigEndianBitConverter.ToUInt64(dynamicBytes, 0x00);
_thisDynamic.DataOffset = BigEndianBitConverter.ToUInt64(dynamicBytes, 0x08);
_thisDynamic.TableOffset = BigEndianBitConverter.ToUInt64(dynamicBytes, 0x10);
_thisDynamic.HeaderVersion = BigEndianBitConverter.ToUInt32(dynamicBytes, 0x18);
_thisDynamic.MaxTableEntries = BigEndianBitConverter.ToUInt32(dynamicBytes, 0x1C);
_thisDynamic.BlockSize = BigEndianBitConverter.ToUInt32(dynamicBytes, 0x20);
_thisDynamic.Checksum = dynamicChecksum;
_thisDynamic.ParentId = BigEndianBitConverter.ToGuid(dynamicBytes, 0x28);
_thisDynamic.ParentTimestamp = BigEndianBitConverter.ToUInt32(dynamicBytes, 0x38);
_thisDynamic.Reserved = BigEndianBitConverter.ToUInt32(dynamicBytes, 0x3C);
_thisDynamic.ParentName = Encoding.BigEndianUnicode.GetString(dynamicBytes, 0x40, 512);
for (int i = 0; i < 8; i++)
{
_thisDynamic.LocatorEntries[i].PlatformCode =
BigEndianBitConverter.ToUInt32(dynamicBytes, 0x240 + 0x00 + (24 * i));
_thisDynamic.LocatorEntries[i].PlatformDataSpace =
BigEndianBitConverter.ToUInt32(dynamicBytes, 0x240 + 0x04 + (24 * i));
_thisDynamic.LocatorEntries[i].PlatformDataLength =
BigEndianBitConverter.ToUInt32(dynamicBytes, 0x240 + 0x08 + (24 * i));
_thisDynamic.LocatorEntries[i].Reserved =
BigEndianBitConverter.ToUInt32(dynamicBytes, 0x240 + 0x0C + (24 * i));
_thisDynamic.LocatorEntries[i].PlatformDataOffset =
BigEndianBitConverter.ToUInt64(dynamicBytes, 0x240 + 0x10 + (24 * i));
}
Array.Copy(dynamicBytes, 0x300, _thisDynamic.Reserved2, 0, 256);
_parentDateTime = new DateTime(2000, 1, 1, 0, 0, 0, DateTimeKind.Utc);
_parentDateTime = _parentDateTime.AddSeconds(_thisDynamic.ParentTimestamp);
sha1Ctx = new Sha1Context();
sha1Ctx.Update(_thisDynamic.Reserved2);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.cookie = 0x{0:X8}", _thisDynamic.Cookie);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.dataOffset = {0}", _thisDynamic.DataOffset);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.tableOffset = {0}", _thisDynamic.TableOffset);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.headerVersion = 0x{0:X8}",
_thisDynamic.HeaderVersion);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.maxTableEntries = {0}",
_thisDynamic.MaxTableEntries);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.blockSize = {0}", _thisDynamic.BlockSize);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.checksum = 0x{0:X8}", _thisDynamic.Checksum);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.parentID = {0}", _thisDynamic.ParentId);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.parentTimestamp = 0x{0:X8} ({1})",
_thisDynamic.ParentTimestamp, _parentDateTime);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.reserved = 0x{0:X8}", _thisDynamic.Reserved);
for (int i = 0; i < 8; i++)
{
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}].platformCode = 0x{1:X8} (\"{2}\")", i,
_thisDynamic.LocatorEntries[i].PlatformCode,
Encoding.ASCII.GetString(BigEndianBitConverter.GetBytes(_thisDynamic.
LocatorEntries[i].PlatformCode)));
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}].platformDataSpace = {1}", i,
_thisDynamic.LocatorEntries[i].PlatformDataSpace);
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}].platformDataLength = {1}", i,
_thisDynamic.LocatorEntries[i].PlatformDataLength);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.locatorEntries[{0}].reserved = 0x{1:X8}", i,
_thisDynamic.LocatorEntries[i].Reserved);
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}].platformDataOffset = {1}", i,
_thisDynamic.LocatorEntries[i].PlatformDataOffset);
}
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.parentName = \"{0}\"", _thisDynamic.ParentName);
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.reserved2's SHA1 = 0x{0}", sha1Ctx.End());
if (_thisDynamic.HeaderVersion != VERSION1)
{
throw new
ImageNotSupportedException($"(VirtualPC plugin): Unknown image type {_thisFooter.DiskType} found. Please submit a bug with an example image.");
}
DateTime startTime = DateTime.UtcNow;
_blockAllocationTable = new uint[_thisDynamic.MaxTableEntries];
// How many sectors uses the BAT
int batSectorCount = (int)Math.Ceiling(((double)_thisDynamic.MaxTableEntries * 4) / 512);
byte[] bat = new byte[_thisDynamic.MaxTableEntries * 4];
imageStream.Seek((long)_thisDynamic.TableOffset, SeekOrigin.Begin);
imageStream.Read(bat, 0, batSectorCount);
ReadOnlySpan <byte> span = bat;
_blockAllocationTable = MemoryMarshal.Cast <byte, uint>(span).
Slice(0, (int)_thisDynamic.MaxTableEntries).ToArray();
for (int i = 0; i < _blockAllocationTable.Length; i++)
{
_blockAllocationTable[i] = Swapping.Swap(_blockAllocationTable[i]);
}
DateTime endTime = DateTime.UtcNow;
AaruConsole.DebugWriteLine("VirtualPC plugin", "Filling the BAT took {0} seconds",
(endTime - startTime).TotalSeconds);
_bitmapSize = (uint)Math.Ceiling((double)_thisDynamic.BlockSize / 512
// 1 bit per sector on the bitmap
/ 8
// and aligned to 512 byte boundary
/ 512);
AaruConsole.DebugWriteLine("VirtualPC plugin", "Bitmap is {0} sectors", _bitmapSize);
}
_imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
switch (_thisFooter.DiskType)
{
case TYPE_FIXED:
case TYPE_DYNAMIC:
{
// Nothing to do here, really.
return(true);
}
case TYPE_DIFFERENCING:
{
_locatorEntriesData = new byte[8][];
for (int i = 0; i < 8; i++)
{
if (_thisDynamic.LocatorEntries[i].PlatformCode != 0x00000000)
{
_locatorEntriesData[i] = new byte[_thisDynamic.LocatorEntries[i].PlatformDataLength];
imageStream.Seek((long)_thisDynamic.LocatorEntries[i].PlatformDataOffset, SeekOrigin.Begin);
imageStream.Read(_locatorEntriesData[i], 0,
(int)_thisDynamic.LocatorEntries[i].PlatformDataLength);
switch (_thisDynamic.LocatorEntries[i].PlatformCode)
{
case PLATFORM_CODE_WINDOWS_ABSOLUTE:
case PLATFORM_CODE_WINDOWS_RELATIVE:
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}] = \"{1}\"", i,
Encoding.ASCII.GetString(_locatorEntriesData[i]));
break;
case PLATFORM_CODE_WINDOWS_ABSOLUTE_U:
case PLATFORM_CODE_WINDOWS_RELATIVE_U:
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}] = \"{1}\"", i,
Encoding.BigEndianUnicode.
GetString(_locatorEntriesData[i]));
break;
case PLATFORM_CODE_MACINTOSH_URI:
AaruConsole.DebugWriteLine("VirtualPC plugin",
"dynamic.locatorEntries[{0}] = \"{1}\"", i,
Encoding.UTF8.GetString(_locatorEntriesData[i]));
break;
default:
AaruConsole.DebugWriteLine("VirtualPC plugin", "dynamic.locatorEntries[{0}] =", i);
PrintHex.PrintHexArray(_locatorEntriesData[i], 64);
break;
}
}
}
int currentLocator = 0;
bool locatorFound = false;
string parentPath = null;
while (!locatorFound &&
currentLocator < 8)
{
switch (_thisDynamic.LocatorEntries[currentLocator].PlatformCode)
{
case PLATFORM_CODE_WINDOWS_ABSOLUTE:
case PLATFORM_CODE_WINDOWS_RELATIVE:
parentPath = Encoding.ASCII.GetString(_locatorEntriesData[currentLocator]);
break;
case PLATFORM_CODE_WINDOWS_ABSOLUTE_U:
case PLATFORM_CODE_WINDOWS_RELATIVE_U:
parentPath = Encoding.BigEndianUnicode.GetString(_locatorEntriesData[currentLocator]);
break;
case PLATFORM_CODE_MACINTOSH_URI:
parentPath =
Uri.UnescapeDataString(Encoding.UTF8.
GetString(_locatorEntriesData[currentLocator]));
if (parentPath.StartsWith("file://localhost", StringComparison.InvariantCulture))
{
parentPath = parentPath.Remove(0, 16);
}
else
{
AaruConsole.DebugWriteLine("VirtualPC plugin",
"Unsupported protocol classified found in URI parent path: \"{0}\"",
parentPath);
parentPath = null;
}
break;
}
if (parentPath != null)
{
AaruConsole.DebugWriteLine("VirtualPC plugin", "Possible parent path: \"{0}\"", parentPath);
IFilter parentFilter =
new FiltersList().GetFilter(Path.Combine(imageFilter.GetParentFolder(), parentPath));
if (parentFilter != null)
{
locatorFound = true;
}
if (!locatorFound)
{
parentPath = null;
}
}
currentLocator++;
}
if (!locatorFound)
{
throw new
FileNotFoundException("(VirtualPC plugin): Cannot find parent file for differencing disk image");
}
{
_parentImage = new Vhd();
IFilter parentFilter =
new FiltersList().GetFilter(Path.Combine(imageFilter.GetParentFolder(), parentPath));
if (parentFilter == null)
{
throw new ImageNotSupportedException("(VirtualPC plugin): Cannot find parent image filter");
}
/* PluginBase plugins = new PluginBase();
* plugins.RegisterAllPlugins();
* if (!plugins.ImagePluginsList.TryGetValue(Name.ToLower(), out parentImage))
* throw new SystemException("(VirtualPC plugin): Unable to open myself");*/
if (!_parentImage.Identify(parentFilter))
{
throw new
ImageNotSupportedException("(VirtualPC plugin): Parent image is not a Virtual PC disk image");
}
if (!_parentImage.Open(parentFilter))
{
throw new ImageNotSupportedException("(VirtualPC plugin): Cannot open parent disk image");
}
// While specification says that parent and child disk images should contain UUID relationship
// in reality it seems that old differencing disk images stored a parent UUID that, nonetheless
// the parent never stored itself. So the only real way to know that images are related is
// because the parent IS found and SAME SIZE. Ugly...
// More funny even, tested parent images show an empty host OS, and child images a correct one.
if (_parentImage.Info.Sectors != _imageInfo.Sectors)
{
throw new
ImageNotSupportedException("(VirtualPC plugin): Parent image is of different size");
}
}
return(true);
}
case TYPE_DEPRECATED1:
case TYPE_DEPRECATED2:
case TYPE_DEPRECATED3:
{
throw new
ImageNotSupportedException("(VirtualPC plugin): Deprecated image type found. Please submit a bug with an example image.");
}
default:
{
throw new
ImageNotSupportedException($"(VirtualPC plugin): Unknown image type {_thisFooter.DiskType} found. Please submit a bug with an example image.");
}
}
}
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary<string, string> options, string @namespace)
{
Encoding = Encoding.GetEncoding("iso-8859-15");
_littleEndian = true;
options ??= GetDefaultOptions();
if(options.TryGetValue("debug", out string debugString))
bool.TryParse(debugString, out _debug);
if(imagePlugin.Info.SectorSize < 512)
return Errno.InvalidArgument;
AaruConsole.DebugWriteLine("Xbox FAT plugin", "Reading superblock");
byte[] sector = imagePlugin.ReadSector(partition.Start);
_superblock = Marshal.ByteArrayToStructureLittleEndian<Superblock>(sector);
if(_superblock.magic == FATX_CIGAM)
{
_superblock = Marshal.ByteArrayToStructureBigEndian<Superblock>(sector);
_littleEndian = false;
}
if(_superblock.magic != FATX_MAGIC)
return Errno.InvalidArgument;
AaruConsole.DebugWriteLine("Xbox FAT plugin",
_littleEndian ? "Filesystem is little endian" : "Filesystem is big endian");
int logicalSectorsPerPhysicalSectors = partition.Offset == 0 && _littleEndian ? 8 : 1;
AaruConsole.DebugWriteLine("Xbox FAT plugin", "logicalSectorsPerPhysicalSectors = {0}",
logicalSectorsPerPhysicalSectors);
string volumeLabel = StringHandlers.CToString(_superblock.volumeLabel,
!_littleEndian ? Encoding.BigEndianUnicode : Encoding.Unicode,
true);
XmlFsType = new FileSystemType
{
Type = "FATX filesystem",
ClusterSize = (uint)(_superblock.sectorsPerCluster * logicalSectorsPerPhysicalSectors *
imagePlugin.Info.SectorSize),
VolumeName = volumeLabel,
VolumeSerial = $"{_superblock.id:X8}"
};
XmlFsType.Clusters = (((partition.End - partition.Start) + 1) * imagePlugin.Info.SectorSize) /
XmlFsType.ClusterSize;
_statfs = new FileSystemInfo
{
Blocks = XmlFsType.Clusters,
FilenameLength = MAX_FILENAME,
Files = 0, // Requires traversing all directories
FreeFiles = 0,
Id =
{
IsInt = true,
Serial32 = _superblock.magic
},
PluginId = Id,
Type = _littleEndian ? "Xbox FAT" : "Xbox 360 FAT",
FreeBlocks = 0 // Requires traversing the FAT
};
AaruConsole.DebugWriteLine("Xbox FAT plugin", "XmlFsType.ClusterSize: {0}", XmlFsType.ClusterSize);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "XmlFsType.VolumeName: {0}", XmlFsType.VolumeName);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "XmlFsType.VolumeSerial: {0}", XmlFsType.VolumeSerial);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "stat.Blocks: {0}", _statfs.Blocks);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "stat.FilenameLength: {0}", _statfs.FilenameLength);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "stat.Id: {0}", _statfs.Id.Serial32);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "stat.Type: {0}", _statfs.Type);
byte[] buffer;
_fatStartSector = (FAT_START / imagePlugin.Info.SectorSize) + partition.Start;
uint fatSize;
AaruConsole.DebugWriteLine("Xbox FAT plugin", "fatStartSector: {0}", _fatStartSector);
if(_statfs.Blocks > MAX_XFAT16_CLUSTERS)
{
AaruConsole.DebugWriteLine("Xbox FAT plugin", "Reading FAT32");
fatSize = (uint)(((_statfs.Blocks + 1) * sizeof(uint)) / imagePlugin.Info.SectorSize);
if((uint)(((_statfs.Blocks + 1) * sizeof(uint)) % imagePlugin.Info.SectorSize) > 0)
fatSize++;
long fatClusters = (fatSize * imagePlugin.Info.SectorSize) / 4096;
if((fatSize * imagePlugin.Info.SectorSize) % 4096 > 0)
fatClusters++;
fatSize = (uint)((fatClusters * 4096) / imagePlugin.Info.SectorSize);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "FAT is {0} sectors", fatSize);
buffer = imagePlugin.ReadSectors(_fatStartSector, fatSize);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "Casting FAT");
_fat32 = MemoryMarshal.Cast<byte, uint>(buffer).ToArray();
if(!_littleEndian)
for(int i = 0; i < _fat32.Length; i++)
_fat32[i] = Swapping.Swap(_fat32[i]);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "fat32[0] == FATX32_ID = {0}", _fat32[0] == FATX32_ID);
if(_fat32[0] != FATX32_ID)
return Errno.InvalidArgument;
}
else
{
AaruConsole.DebugWriteLine("Xbox FAT plugin", "Reading FAT16");
fatSize = (uint)(((_statfs.Blocks + 1) * sizeof(ushort)) / imagePlugin.Info.SectorSize);
if((uint)(((_statfs.Blocks + 1) * sizeof(ushort)) % imagePlugin.Info.SectorSize) > 0)
fatSize++;
long fatClusters = (fatSize * imagePlugin.Info.SectorSize) / 4096;
if((fatSize * imagePlugin.Info.SectorSize) % 4096 > 0)
fatClusters++;
fatSize = (uint)((fatClusters * 4096) / imagePlugin.Info.SectorSize);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "FAT is {0} sectors", fatSize);
buffer = imagePlugin.ReadSectors(_fatStartSector, fatSize);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "Casting FAT");
_fat16 = MemoryMarshal.Cast<byte, ushort>(buffer).ToArray();
if(!_littleEndian)
for(int i = 0; i < _fat16.Length; i++)
_fat16[i] = Swapping.Swap(_fat16[i]);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "fat16[0] == FATX16_ID = {0}", _fat16[0] == FATX16_ID);
if(_fat16[0] != FATX16_ID)
return Errno.InvalidArgument;
}
_sectorsPerCluster = (uint)(_superblock.sectorsPerCluster * logicalSectorsPerPhysicalSectors);
_imagePlugin = imagePlugin;
_firstClusterSector = _fatStartSector + fatSize;
_bytesPerCluster = _sectorsPerCluster * imagePlugin.Info.SectorSize;
AaruConsole.DebugWriteLine("Xbox FAT plugin", "sectorsPerCluster = {0}", _sectorsPerCluster);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "bytesPerCluster = {0}", _bytesPerCluster);
AaruConsole.DebugWriteLine("Xbox FAT plugin", "firstClusterSector = {0}", _firstClusterSector);
uint[] rootDirectoryClusters = GetClusters(_superblock.rootDirectoryCluster);
if(rootDirectoryClusters is null)
return Errno.InvalidArgument;
byte[] rootDirectoryBuffer = new byte[_bytesPerCluster * rootDirectoryClusters.Length];
AaruConsole.DebugWriteLine("Xbox FAT plugin", "Reading root directory");
for(int i = 0; i < rootDirectoryClusters.Length; i++)
{
buffer =
imagePlugin.ReadSectors(_firstClusterSector + ((rootDirectoryClusters[i] - 1) * _sectorsPerCluster),
_sectorsPerCluster);
Array.Copy(buffer, 0, rootDirectoryBuffer, i * _bytesPerCluster, _bytesPerCluster);
}
_rootDirectory = new Dictionary<string, DirectoryEntry>();
int pos = 0;
while(pos < rootDirectoryBuffer.Length)
{
DirectoryEntry entry = _littleEndian
? Marshal.
ByteArrayToStructureLittleEndian<DirectoryEntry
>(rootDirectoryBuffer, pos, Marshal.SizeOf<DirectoryEntry>())
: Marshal.ByteArrayToStructureBigEndian<DirectoryEntry>(rootDirectoryBuffer,
pos, Marshal.SizeOf<DirectoryEntry>());
pos += Marshal.SizeOf<DirectoryEntry>();
if(entry.filenameSize == UNUSED_DIRENTRY ||
entry.filenameSize == FINISHED_DIRENTRY)
break;
if(entry.filenameSize == DELETED_DIRENTRY ||
entry.filenameSize > MAX_FILENAME)
continue;
string filename = Encoding.GetString(entry.filename, 0, entry.filenameSize);
_rootDirectory.Add(filename, entry);
}
_cultureInfo = new CultureInfo("en-US", false);
_directoryCache = new Dictionary<string, Dictionary<string, DirectoryEntry>>();
_mounted = true;
return Errno.NoError;
}
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary <string, string> options, string @namespace)
{
Encoding = encoding ?? Encoding.GetEncoding(1252);
byte[] vdMagic = new byte[5]; // Volume Descriptor magic "CD001"
byte[] hsMagic = new byte[5]; // Volume Descriptor magic "CDROM"
options ??= GetDefaultOptions();
if (options.TryGetValue("debug", out string debugString))
{
bool.TryParse(debugString, out _debug);
}
if (options.TryGetValue("use_path_table", out string usePathTableString))
{
bool.TryParse(usePathTableString, out _usePathTable);
}
if (options.TryGetValue("use_trans_tbl", out string useTransTblString))
{
bool.TryParse(useTransTblString, out _useTransTbl);
}
if (options.TryGetValue("use_evd", out string useEvdString))
{
bool.TryParse(useEvdString, out _useEvd);
}
// Default namespace
@namespace ??= "joliet";
switch (@namespace.ToLowerInvariant())
{
case "normal":
_namespace = Namespace.Normal;
break;
case "vms":
_namespace = Namespace.Vms;
break;
case "joliet":
_namespace = Namespace.Joliet;
break;
case "rrip":
_namespace = Namespace.Rrip;
break;
case "romeo":
_namespace = Namespace.Romeo;
break;
default: return(Errno.InvalidArgument);
}
PrimaryVolumeDescriptor?pvd = null;
PrimaryVolumeDescriptor?jolietvd = null;
BootRecord?bvd = null;
HighSierraPrimaryVolumeDescriptor?hsvd = null;
FileStructureVolumeDescriptor? fsvd = null;
// ISO9660 is designed for 2048 bytes/sector devices
if (imagePlugin.Info.SectorSize < 2048)
{
return(Errno.InvalidArgument);
}
// ISO9660 Primary Volume Descriptor starts at sector 16, so that's minimal size.
if (partition.End < 16)
{
return(Errno.InvalidArgument);
}
ulong counter = 0;
byte[] vdSector = imagePlugin.ReadSector(16 + counter + partition.Start);
int xaOff = vdSector.Length == 2336 ? 8 : 0;
Array.Copy(vdSector, 0x009 + xaOff, hsMagic, 0, 5);
_highSierra = Encoding.GetString(hsMagic) == HIGH_SIERRA_MAGIC;
int hsOff = 0;
if (_highSierra)
{
hsOff = 8;
}
_cdi = false;
List <ulong> bvdSectors = new List <ulong>();
List <ulong> pvdSectors = new List <ulong>();
List <ulong> svdSectors = new List <ulong>();
List <ulong> evdSectors = new List <ulong>();
List <ulong> vpdSectors = new List <ulong>();
while (true)
{
AaruConsole.DebugWriteLine("ISO9660 plugin", "Processing VD loop no. {0}", counter);
// Seek to Volume Descriptor
AaruConsole.DebugWriteLine("ISO9660 plugin", "Reading sector {0}", 16 + counter + partition.Start);
byte[] vdSectorTmp = imagePlugin.ReadSector(16 + counter + partition.Start);
vdSector = new byte[vdSectorTmp.Length - xaOff];
Array.Copy(vdSectorTmp, xaOff, vdSector, 0, vdSector.Length);
byte vdType = vdSector[0 + hsOff]; // Volume Descriptor Type, should be 1 or 2.
AaruConsole.DebugWriteLine("ISO9660 plugin", "VDType = {0}", vdType);
if (vdType == 255) // Supposedly we are in the PVD.
{
if (counter == 0)
{
return(Errno.InvalidArgument);
}
break;
}
Array.Copy(vdSector, 0x001, vdMagic, 0, 5);
Array.Copy(vdSector, 0x009, hsMagic, 0, 5);
if (Encoding.GetString(vdMagic) != ISO_MAGIC &&
Encoding.GetString(hsMagic) != HIGH_SIERRA_MAGIC &&
Encoding.GetString(vdMagic) != CDI_MAGIC
) // Recognized, it is an ISO9660, now check for rest of data.
{
if (counter == 0)
{
return(Errno.InvalidArgument);
}
break;
}
_cdi |= Encoding.GetString(vdMagic) == CDI_MAGIC;
switch (vdType)
{
case 0:
{
if (_debug)
{
bvdSectors.Add(16 + counter + partition.Start);
}
break;
}
case 1:
{
if (_highSierra)
{
hsvd = Marshal.
ByteArrayToStructureLittleEndian <HighSierraPrimaryVolumeDescriptor>(vdSector);
}
else if (_cdi)
{
fsvd = Marshal.ByteArrayToStructureBigEndian <FileStructureVolumeDescriptor>(vdSector);
}
else
{
pvd = Marshal.ByteArrayToStructureLittleEndian <PrimaryVolumeDescriptor>(vdSector);
}
if (_debug)
{
pvdSectors.Add(16 + counter + partition.Start);
}
break;
}
case 2:
{
PrimaryVolumeDescriptor svd =
Marshal.ByteArrayToStructureLittleEndian <PrimaryVolumeDescriptor>(vdSector);
// TODO: Other escape sequences
// Check if this is Joliet
if (svd.version == 1)
{
if (svd.escape_sequences[0] == '%' &&
svd.escape_sequences[1] == '/')
{
if (svd.escape_sequences[2] == '@' ||
svd.escape_sequences[2] == 'C' ||
svd.escape_sequences[2] == 'E')
{
jolietvd = svd;
}
else
{
AaruConsole.DebugWriteLine("ISO9660 plugin",
"Found unknown supplementary volume descriptor");
}
}
if (_debug)
{
svdSectors.Add(16 + counter + partition.Start);
}
}
else
{
if (_debug)
{
evdSectors.Add(16 + counter + partition.Start);
}
if (_useEvd)
{
// Basically until escape sequences are implemented, let the user chose the encoding.
// This is the same as user choosing Romeo namespace, but using the EVD instead of the PVD
_namespace = Namespace.Romeo;
pvd = svd;
}
}
break;
}
case 3:
{
if (_debug)
{
vpdSectors.Add(16 + counter + partition.Start);
}
break;
}
}
counter++;
}
DecodedVolumeDescriptor decodedVd;
var decodedJolietVd = new DecodedVolumeDescriptor();
XmlFsType = new FileSystemType();
if (pvd == null &&
hsvd == null &&
fsvd == null)
{
AaruConsole.ErrorWriteLine("ERROR: Could not find primary volume descriptor");
return(Errno.InvalidArgument);
}
if (_highSierra)
{
decodedVd = DecodeVolumeDescriptor(hsvd.Value);
}
else if (_cdi)
{
decodedVd = DecodeVolumeDescriptor(fsvd.Value);
}
else
{
decodedVd = DecodeVolumeDescriptor(pvd.Value);
}
if (jolietvd != null)
{
decodedJolietVd = DecodeJolietDescriptor(jolietvd.Value);
}
if (_namespace != Namespace.Romeo)
{
Encoding = Encoding.ASCII;
}
string fsFormat;
byte[] pathTableData;
uint pathTableMsbLocation;
uint pathTableLsbLocation = 0; // Initialize to 0 as ignored in CD-i
_image = imagePlugin;
if (_highSierra)
{
_blockSize = hsvd.Value.logical_block_size;
pathTableData = ReadSingleExtent(hsvd.Value.path_table_size,
Swapping.Swap(hsvd.Value.mandatory_path_table_msb));
fsFormat = "High Sierra Format";
pathTableMsbLocation = hsvd.Value.mandatory_path_table_msb;
pathTableLsbLocation = hsvd.Value.mandatory_path_table_lsb;
}
else if (_cdi)
{
_blockSize = fsvd.Value.logical_block_size;
pathTableData = ReadSingleExtent(fsvd.Value.path_table_size, fsvd.Value.path_table_addr);
fsFormat = "CD-i";
pathTableMsbLocation = fsvd.Value.path_table_addr;
// TODO: Until escape sequences are implemented this is the default CD-i encoding.
Encoding = Encoding.GetEncoding("iso8859-1");
}
else
{
_blockSize = pvd.Value.logical_block_size;
pathTableData = ReadSingleExtent(pvd.Value.path_table_size, Swapping.Swap(pvd.Value.type_m_path_table));
fsFormat = "ISO9660";
pathTableMsbLocation = pvd.Value.type_m_path_table;
pathTableLsbLocation = pvd.Value.type_l_path_table;
}
_pathTable = _highSierra ? DecodeHighSierraPathTable(pathTableData) : DecodePathTable(pathTableData);
// High Sierra and CD-i do not support Joliet or RRIP
if ((_highSierra || _cdi) &&
_namespace != Namespace.Normal &&
_namespace != Namespace.Vms)
{
_namespace = Namespace.Normal;
}
if (jolietvd is null &&
_namespace == Namespace.Joliet)
{
_namespace = Namespace.Normal;
}
uint rootLocation;
uint rootSize;
byte rootXattrLength = 0;
if (!_cdi)
{
rootLocation = _highSierra ? hsvd.Value.root_directory_record.extent
: pvd.Value.root_directory_record.extent;
rootXattrLength = _highSierra ? hsvd.Value.root_directory_record.xattr_len
: pvd.Value.root_directory_record.xattr_len;
rootSize = _highSierra ? hsvd.Value.root_directory_record.size : pvd.Value.root_directory_record.size;
if (pathTableData.Length > 1 &&
rootLocation != _pathTable[0].Extent)
{
AaruConsole.DebugWriteLine("ISO9660 plugin",
"Path table and PVD do not point to the same location for the root directory!");
byte[] firstRootSector = ReadSector(rootLocation);
bool pvdWrongRoot = false;
if (_highSierra)
{
HighSierraDirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <HighSierraDirectoryRecord>(firstRootSector);
if (rootEntry.extent != rootLocation)
{
pvdWrongRoot = true;
}
}
else
{
DirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <DirectoryRecord>(firstRootSector);
if (rootEntry.extent != rootLocation)
{
pvdWrongRoot = true;
}
}
if (pvdWrongRoot)
{
AaruConsole.DebugWriteLine("ISO9660 plugin",
"PVD does not point to correct root directory, checking path table...");
bool pathTableWrongRoot = false;
rootLocation = _pathTable[0].Extent;
firstRootSector = ReadSector(_pathTable[0].Extent);
if (_highSierra)
{
HighSierraDirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <HighSierraDirectoryRecord>(firstRootSector);
if (rootEntry.extent != rootLocation)
{
pathTableWrongRoot = true;
}
}
else
{
DirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <DirectoryRecord>(firstRootSector);
if (rootEntry.extent != rootLocation)
{
pathTableWrongRoot = true;
}
}
if (pathTableWrongRoot)
{
AaruConsole.ErrorWriteLine("Cannot find root directory...");
return(Errno.InvalidArgument);
}
_usePathTable = true;
}
}
}
else
{
rootLocation = _pathTable[0].Extent;
byte[] firstRootSector = ReadSector(rootLocation);
CdiDirectoryRecord rootEntry =
Marshal.ByteArrayToStructureBigEndian <CdiDirectoryRecord>(firstRootSector);
rootSize = rootEntry.size;
_usePathTable = _usePathTable || _pathTable.Length == 1;
_useTransTbl = false;
}
// In case the path table is incomplete
if (_usePathTable && pathTableData.Length == 1)
{
_usePathTable = false;
}
if (_usePathTable && !_cdi)
{
rootLocation = _pathTable[0].Extent;
byte[] firstRootSector = ReadSector(rootLocation);
if (_highSierra)
{
HighSierraDirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <HighSierraDirectoryRecord>(firstRootSector);
rootSize = rootEntry.size;
}
else
{
DirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <DirectoryRecord>(firstRootSector);
rootSize = rootEntry.size;
}
rootXattrLength = _pathTable[0].XattrLength;
}
try
{
_ = ReadSingleExtent(rootSize, rootLocation);
}
catch
{
return(Errno.InvalidArgument);
}
byte[] ipbinSector = ReadSector(partition.Start);
CD.IPBin? segaCd = CD.DecodeIPBin(ipbinSector);
Saturn.IPBin? saturn = Saturn.DecodeIPBin(ipbinSector);
Dreamcast.IPBin?dreamcast = Dreamcast.DecodeIPBin(ipbinSector);
if (_namespace == Namespace.Joliet ||
_namespace == Namespace.Rrip)
{
_usePathTable = false;
_useTransTbl = false;
}
// Cannot traverse path table if we substitute the names for the ones in TRANS.TBL
if (_useTransTbl)
{
_usePathTable = false;
}
if (_namespace != Namespace.Joliet)
{
_rootDirectoryCache = _cdi
? DecodeCdiDirectory(rootLocation + rootXattrLength, rootSize)
: _highSierra
? DecodeHighSierraDirectory(rootLocation + rootXattrLength, rootSize)
: DecodeIsoDirectory(rootLocation + rootXattrLength, rootSize);
}
XmlFsType.Type = fsFormat;
if (jolietvd != null &&
(_namespace == Namespace.Joliet || _namespace == Namespace.Rrip))
{
rootLocation = jolietvd.Value.root_directory_record.extent;
rootXattrLength = jolietvd.Value.root_directory_record.xattr_len;
rootSize = jolietvd.Value.root_directory_record.size;
_joliet = true;
_rootDirectoryCache = DecodeIsoDirectory(rootLocation + rootXattrLength, rootSize);
XmlFsType.VolumeName = decodedJolietVd.VolumeIdentifier;
if (string.IsNullOrEmpty(decodedJolietVd.SystemIdentifier) ||
decodedVd.SystemIdentifier.Length > decodedJolietVd.SystemIdentifier.Length)
{
XmlFsType.SystemIdentifier = decodedVd.SystemIdentifier;
}
else
{
XmlFsType.SystemIdentifier = string.IsNullOrEmpty(decodedJolietVd.SystemIdentifier) ? null
: decodedJolietVd.SystemIdentifier;
}
if (string.IsNullOrEmpty(decodedJolietVd.VolumeSetIdentifier) ||
decodedVd.VolumeSetIdentifier.Length > decodedJolietVd.VolumeSetIdentifier.Length)
{
XmlFsType.VolumeSetIdentifier = decodedVd.VolumeSetIdentifier;
}
else
{
XmlFsType.VolumeSetIdentifier = string.IsNullOrEmpty(decodedJolietVd.VolumeSetIdentifier) ? null
: decodedJolietVd.VolumeSetIdentifier;
}
if (string.IsNullOrEmpty(decodedJolietVd.PublisherIdentifier) ||
decodedVd.PublisherIdentifier.Length > decodedJolietVd.PublisherIdentifier.Length)
{
XmlFsType.PublisherIdentifier = decodedVd.PublisherIdentifier;
}
else
{
XmlFsType.PublisherIdentifier = string.IsNullOrEmpty(decodedJolietVd.PublisherIdentifier) ? null
: decodedJolietVd.PublisherIdentifier;
}
if (string.IsNullOrEmpty(decodedJolietVd.DataPreparerIdentifier) ||
decodedVd.DataPreparerIdentifier.Length > decodedJolietVd.DataPreparerIdentifier.Length)
{
XmlFsType.DataPreparerIdentifier = decodedVd.DataPreparerIdentifier;
}
else
{
XmlFsType.DataPreparerIdentifier = string.IsNullOrEmpty(decodedJolietVd.DataPreparerIdentifier)
? null : decodedJolietVd.DataPreparerIdentifier;
}
if (string.IsNullOrEmpty(decodedJolietVd.ApplicationIdentifier) ||
decodedVd.ApplicationIdentifier.Length > decodedJolietVd.ApplicationIdentifier.Length)
{
XmlFsType.ApplicationIdentifier = decodedVd.ApplicationIdentifier;
}
else
{
XmlFsType.ApplicationIdentifier = string.IsNullOrEmpty(decodedJolietVd.ApplicationIdentifier) ? null
: decodedJolietVd.ApplicationIdentifier;
}
XmlFsType.CreationDate = decodedJolietVd.CreationTime;
XmlFsType.CreationDateSpecified = true;
if (decodedJolietVd.HasModificationTime)
{
XmlFsType.ModificationDate = decodedJolietVd.ModificationTime;
XmlFsType.ModificationDateSpecified = true;
}
if (decodedJolietVd.HasExpirationTime)
{
XmlFsType.ExpirationDate = decodedJolietVd.ExpirationTime;
XmlFsType.ExpirationDateSpecified = true;
}
if (decodedJolietVd.HasEffectiveTime)
{
XmlFsType.EffectiveDate = decodedJolietVd.EffectiveTime;
XmlFsType.EffectiveDateSpecified = true;
}
decodedVd = decodedJolietVd;
}
else
{
XmlFsType.SystemIdentifier = decodedVd.SystemIdentifier;
XmlFsType.VolumeName = decodedVd.VolumeIdentifier;
XmlFsType.VolumeSetIdentifier = decodedVd.VolumeSetIdentifier;
XmlFsType.PublisherIdentifier = decodedVd.PublisherIdentifier;
XmlFsType.DataPreparerIdentifier = decodedVd.DataPreparerIdentifier;
XmlFsType.ApplicationIdentifier = decodedVd.ApplicationIdentifier;
XmlFsType.CreationDate = decodedVd.CreationTime;
XmlFsType.CreationDateSpecified = true;
if (decodedVd.HasModificationTime)
{
XmlFsType.ModificationDate = decodedVd.ModificationTime;
XmlFsType.ModificationDateSpecified = true;
}
if (decodedVd.HasExpirationTime)
{
XmlFsType.ExpirationDate = decodedVd.ExpirationTime;
XmlFsType.ExpirationDateSpecified = true;
}
if (decodedVd.HasEffectiveTime)
{
XmlFsType.EffectiveDate = decodedVd.EffectiveTime;
XmlFsType.EffectiveDateSpecified = true;
}
}
if (_debug)
{
_rootDirectoryCache.Add("$", new DecodedDirectoryEntry
{
Extents = new List <(uint extent, uint size)>
{
(rootLocation, rootSize)
},
Filename = "$",
Size = rootSize,
Timestamp = decodedVd.CreationTime
});
public bool GetInformation(IMediaImage imagePlugin, out List <CommonTypes.Partition> partitions,
ulong sectorOffset)
{
partitions = new List <CommonTypes.Partition>();
byte[] sector = imagePlugin.ReadSector(sectorOffset);
if (sector.Length < 512)
{
return(false);
}
Label dvh = Marshal.ByteArrayToStructureBigEndian <Label>(sector);
for (int i = 0; i < dvh.volume.Length; i++)
{
dvh.volume[i] = (Volume)Marshal.SwapStructureMembersEndian(dvh.volume[i]);
}
for (int i = 0; i < dvh.partitions.Length; i++)
{
dvh.partitions[i] = (Partition)Marshal.SwapStructureMembersEndian(dvh.partitions[i]);
}
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.magic = 0x{0:X8} (should be 0x{1:X8})", dvh.magic,
SGI_MAGIC);
if (dvh.magic != SGI_MAGIC)
{
return(false);
}
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.root_part_num = {0}", dvh.root_part_num);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.swap_part_num = {0}", dvh.swap_part_num);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.boot_file = \"{0}\"",
StringHandlers.CToString(dvh.boot_file));
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_skew = {0}", dvh.device_params.dp_skew);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_gap1 = {0}", dvh.device_params.dp_gap1);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_gap2 = {0}", dvh.device_params.dp_gap2);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_spares_cyl = {0}",
dvh.device_params.dp_spares_cyl);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_cyls = {0}", dvh.device_params.dp_cyls);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_shd0 = {0}", dvh.device_params.dp_shd0);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_trks0 = {0}", dvh.device_params.dp_trks0);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_ctq_depth = {0}",
dvh.device_params.dp_ctq_depth);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_cylshi = {0}",
dvh.device_params.dp_cylshi);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_secs = {0}", dvh.device_params.dp_secs);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_secbytes = {0}",
dvh.device_params.dp_secbytes);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_interleave = {0}",
dvh.device_params.dp_interleave);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_flags = {0}", dvh.device_params.dp_flags);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_datarate = {0}",
dvh.device_params.dp_datarate);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_nretries = {0}",
dvh.device_params.dp_nretries);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_mspw = {0}", dvh.device_params.dp_mspw);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_xgap1 = {0}", dvh.device_params.dp_xgap1);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_xsync = {0}", dvh.device_params.dp_xsync);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_xrdly = {0}", dvh.device_params.dp_xrdly);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_xgap2 = {0}", dvh.device_params.dp_xgap2);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_xrgate = {0}",
dvh.device_params.dp_xrgate);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.device_params.dp_xwcont = {0}",
dvh.device_params.dp_xwcont);
ulong counter = 0;
for (int i = 0; i < dvh.partitions.Length; i++)
{
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.partitions[{0}].num_blocks = {1}", i,
dvh.partitions[i].num_blocks);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.partitions[{0}].first_block = {1}", i,
dvh.partitions[i].first_block);
// TODO: Solve big endian marshal with enumerations
dvh.partitions[i].type = (SGIType)Swapping.Swap((uint)dvh.partitions[i].type);
AaruConsole.DebugWriteLine("SGIVH plugin", "dvh.partitions[{0}].type = {1}", i, dvh.partitions[i].type);
var part = new CommonTypes.Partition
{
Start = (dvh.partitions[i].first_block * dvh.device_params.dp_secbytes) /
imagePlugin.Info.SectorSize,
Offset = dvh.partitions[i].first_block * dvh.device_params.dp_secbytes,
Length = (dvh.partitions[i].num_blocks * dvh.device_params.dp_secbytes) /
imagePlugin.Info.SectorSize,
Size = dvh.partitions[i].num_blocks * dvh.device_params.dp_secbytes,
Type = TypeToString(dvh.partitions[i].type),
Sequence = counter,
Scheme = Name
};
if (part.Size <= 0 ||
dvh.partitions[i].type == SGIType.Header ||
dvh.partitions[i].type == SGIType.Volume)
{
continue;
}
partitions.Add(part);
counter++;
}
return(true);
}
