static DecodedVolumeDescriptor DecodeVolumeDescriptor(PrimaryVolumeDescriptor pvd)
{
var decodedVd = new DecodedVolumeDescriptor
{
SystemIdentifier = StringHandlers.CToString(pvd.system_id).TrimEnd(),
VolumeIdentifier = StringHandlers.CToString(pvd.volume_id).TrimEnd(),
VolumeSetIdentifier = StringHandlers.CToString(pvd.volume_set_id).TrimEnd(),
PublisherIdentifier = StringHandlers.CToString(pvd.publisher_id).TrimEnd(),
DataPreparerIdentifier = StringHandlers.CToString(pvd.preparer_id).TrimEnd(),
ApplicationIdentifier = StringHandlers.CToString(pvd.application_id).TrimEnd()
};
if (pvd.creation_date[0] == '0' ||
pvd.creation_date[0] == 0x00)
{
decodedVd.CreationTime = DateTime.MinValue;
}
else
{
decodedVd.CreationTime = DateHandlers.Iso9660ToDateTime(pvd.creation_date);
}
if (pvd.modification_date[0] == '0' ||
pvd.modification_date[0] == 0x00)
{
decodedVd.HasModificationTime = false;
}
else
{
decodedVd.HasModificationTime = true;
decodedVd.ModificationTime = DateHandlers.Iso9660ToDateTime(pvd.modification_date);
}
if (pvd.expiration_date[0] == '0' ||
pvd.expiration_date[0] == 0x00)
{
decodedVd.HasExpirationTime = false;
}
else
{
decodedVd.HasExpirationTime = true;
decodedVd.ExpirationTime = DateHandlers.Iso9660ToDateTime(pvd.expiration_date);
}
if (pvd.effective_date[0] == '0' ||
pvd.effective_date[0] == 0x00)
{
decodedVd.HasEffectiveTime = false;
}
else
{
decodedVd.HasEffectiveTime = true;
decodedVd.EffectiveTime = DateHandlers.Iso9660ToDateTime(pvd.effective_date);
}
decodedVd.Blocks = pvd.volume_space_size;
decodedVd.BlockSize = pvd.logical_block_size;
return(decodedVd);
}
static DecodedVolumeDescriptor DecodeJolietDescriptor(PrimaryVolumeDescriptor jolietvd)
{
DecodedVolumeDescriptor decodedVD = new DecodedVolumeDescriptor
{
SystemIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.system_id).TrimEnd().Trim('\u0000'),
VolumeIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.volume_id).TrimEnd().Trim('\u0000'),
VolumeSetIdentifier =
Encoding.BigEndianUnicode.GetString(jolietvd.volume_set_id).TrimEnd().Trim('\u0000'),
PublisherIdentifier =
Encoding.BigEndianUnicode.GetString(jolietvd.publisher_id).TrimEnd().Trim('\u0000'),
DataPreparerIdentifier =
Encoding.BigEndianUnicode.GetString(jolietvd.preparer_id).TrimEnd().Trim('\u0000'),
ApplicationIdentifier =
Encoding.BigEndianUnicode.GetString(jolietvd.application_id).TrimEnd().Trim('\u0000')
};
if (jolietvd.creation_date[0] < 0x31 || jolietvd.creation_date[0] > 0x39)
{
decodedVD.CreationTime = DateTime.MinValue;
}
else
{
decodedVD.CreationTime = DateHandlers.Iso9660ToDateTime(jolietvd.creation_date);
}
if (jolietvd.modification_date[0] < 0x31 || jolietvd.modification_date[0] > 0x39)
{
decodedVD.HasModificationTime = false;
}
else
{
decodedVD.HasModificationTime = true;
decodedVD.ModificationTime = DateHandlers.Iso9660ToDateTime(jolietvd.modification_date);
}
if (jolietvd.expiration_date[0] < 0x31 || jolietvd.expiration_date[0] > 0x39)
{
decodedVD.HasExpirationTime = false;
}
else
{
decodedVD.HasExpirationTime = true;
decodedVD.ExpirationTime = DateHandlers.Iso9660ToDateTime(jolietvd.expiration_date);
}
if (jolietvd.effective_date[0] < 0x31 || jolietvd.effective_date[0] > 0x39)
{
decodedVD.HasEffectiveTime = false;
}
else
{
decodedVD.HasEffectiveTime = true;
decodedVD.EffectiveTime = DateHandlers.Iso9660ToDateTime(jolietvd.effective_date);
}
decodedVD.Blocks = jolietvd.volume_space_size;
decodedVD.BlockSize = jolietvd.logical_block_size;
return(decodedVD);
}
private void RefreshPVDInfo()
{
txtVDType.Text = vd.VolumeDescriptorType.ToString();
txtStandardIdentifier.Text = vd.StandardIdentifier;
txtVDVersion.Text = vd.VolumeDescriptorVersion.ToString();
if (vd.VolumeDescriptorType == VolumeDescriptorType.PrimaryVolumeDescriptor)
{
PrimaryVolumeDescriptor pvd = (PrimaryVolumeDescriptor)vd;
gbPrimaryVolumeDescriptor.Visible = true;
txtSystemIdentifier.Text = pvd.SystemIdentifier;
txtVolumeIdentifier.Text = pvd.VolumeIdentifier;
txtVolumeSpace.Text = pvd.VolumeSpaceSize.ToString();
txtVolumeSequence.Text = pvd.VolumeSequenceNumber.ToString();
txtVolumeSet.Text = pvd.VolumeSetSize.ToString();
txtLogicalBlockSize.Text = pvd.LogicalBlockSize.ToString();
txtPathTableSize.Text = pvd.PathTableSize.ToString();
txtPathTableLocation.Text = pvd.PathTableLocation.ToString();
txtVolumeSetIdentifier.Text = pvd.VolumeSetIdentifier;
txtPublisherIdentifier.Text = pvd.PublisherIdentifier;
txtDataPrepIdentifier.Text = pvd.DataPreparerIdentifier;
txtApplicationIdentifier.Text = pvd.ApplicationIdentifier;
txtCopyrightIdentifier.Text = pvd.CopyrightFileIdentifier;
txtAbstractFileIdentifier.Text = pvd.AbstractFileIdentifier;
txtBibliographicalIdentifier.Text = pvd.BibliographicFileIdentifier;
txtVolumeCreationDate.Text = pvd.VolumeCreationDate.ToString();
txtLastModificationDate.Text = pvd.VolumeModificationdDate.ToString();
txtExpiryDate.Text = pvd.VolumeExpirationDate.ToString();
txtEffectiveDate.Text = pvd.VolumeEffectiveDate.ToString();
}
else
{
gbPrimaryVolumeDescriptor.Visible = false;
}
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
// UDF is always UTF-8
Encoding = Encoding.UTF8;
byte[] sector;
StringBuilder sbInformation = new StringBuilder();
sbInformation.AppendLine("Universal Disk Format");
AnchorVolumeDescriptorPointer anchor = new AnchorVolumeDescriptorPointer();
// All positions where anchor may reside
ulong[] positions = { 256, 512, partition.End - 256, partition.End };
foreach (ulong position in positions)
{
sector = imagePlugin.ReadSector(position);
anchor = new AnchorVolumeDescriptorPointer();
IntPtr anchorPtr = Marshal.AllocHGlobal(Marshal.SizeOf(anchor));
Marshal.Copy(sector, 0, anchorPtr, Marshal.SizeOf(anchor));
anchor =
(AnchorVolumeDescriptorPointer)Marshal.PtrToStructure(anchorPtr,
typeof(AnchorVolumeDescriptorPointer));
Marshal.FreeHGlobal(anchorPtr);
if (anchor.tag.tagIdentifier == TagIdentifier.AnchorVolumeDescriptorPointer &&
anchor.tag.tagLocation == position &&
anchor.mainVolumeDescriptorSequenceExtent.location + partition.Start < partition.End)
{
break;
}
}
ulong count = 0;
PrimaryVolumeDescriptor pvd = new PrimaryVolumeDescriptor();
LogicalVolumeDescriptor lvd = new LogicalVolumeDescriptor();
LogicalVolumeIntegrityDescriptor lvid = new LogicalVolumeIntegrityDescriptor();
LogicalVolumeIntegrityDescriptorImplementationUse lvidiu =
new LogicalVolumeIntegrityDescriptorImplementationUse();
while (count < 256)
{
sector = imagePlugin.ReadSector(partition.Start + anchor.mainVolumeDescriptorSequenceExtent.location +
count);
TagIdentifier tagId = (TagIdentifier)BitConverter.ToUInt16(sector, 0);
uint location = BitConverter.ToUInt32(sector, 0x0C);
if (location == partition.Start + anchor.mainVolumeDescriptorSequenceExtent.location + count)
{
if (tagId == TagIdentifier.TerminatingDescriptor)
{
break;
}
switch (tagId)
{
case TagIdentifier.LogicalVolumeDescriptor:
IntPtr lvdPtr = Marshal.AllocHGlobal(Marshal.SizeOf(lvd));
Marshal.Copy(sector, 0, lvdPtr, Marshal.SizeOf(lvd));
lvd = (LogicalVolumeDescriptor)
Marshal.PtrToStructure(lvdPtr, typeof(LogicalVolumeDescriptor));
Marshal.FreeHGlobal(lvdPtr);
break;
case TagIdentifier.PrimaryVolumeDescriptor:
IntPtr pvdPtr = Marshal.AllocHGlobal(Marshal.SizeOf(pvd));
Marshal.Copy(sector, 0, pvdPtr, Marshal.SizeOf(pvd));
pvd = (PrimaryVolumeDescriptor)
Marshal.PtrToStructure(pvdPtr, typeof(PrimaryVolumeDescriptor));
Marshal.FreeHGlobal(pvdPtr);
break;
}
}
else
{
break;
}
count++;
}
sector = imagePlugin.ReadSector(lvd.integritySequenceExtent.location);
IntPtr lvidPtr = Marshal.AllocHGlobal(Marshal.SizeOf(lvid));
Marshal.Copy(sector, 0, lvidPtr, Marshal.SizeOf(lvid));
lvid =
(LogicalVolumeIntegrityDescriptor)
Marshal.PtrToStructure(lvidPtr, typeof(LogicalVolumeIntegrityDescriptor));
Marshal.FreeHGlobal(lvidPtr);
if (lvid.tag.tagIdentifier == TagIdentifier.LogicalVolumeIntegrityDescriptor &&
lvid.tag.tagLocation == lvd.integritySequenceExtent.location)
{
IntPtr lvidiuPtr = Marshal.AllocHGlobal(Marshal.SizeOf(lvidiu));
Marshal.Copy(sector, (int)(lvid.numberOfPartitions * 8 + 80), lvidiuPtr, Marshal.SizeOf(lvidiu));
lvidiu =
(LogicalVolumeIntegrityDescriptorImplementationUse)Marshal.PtrToStructure(lvidiuPtr,
typeof(
LogicalVolumeIntegrityDescriptorImplementationUse
));
Marshal.FreeHGlobal(lvidiuPtr);
}
else
{
lvid = new LogicalVolumeIntegrityDescriptor();
}
sbInformation.AppendFormat("Volume is number {0} of {1}", pvd.volumeSequenceNumber,
pvd.maximumVolumeSequenceNumber).AppendLine();
sbInformation.AppendFormat("Volume set identifier: {0}",
StringHandlers.DecompressUnicode(pvd.volumeSetIdentifier)).AppendLine();
sbInformation
.AppendFormat("Volume name: {0}", StringHandlers.DecompressUnicode(lvd.logicalVolumeIdentifier))
.AppendLine();
sbInformation.AppendFormat("Volume uses {0} bytes per block", lvd.logicalBlockSize).AppendLine();
sbInformation.AppendFormat("Volume was las written in {0}", EcmaToDateTime(lvid.recordingDateTime))
.AppendLine();
sbInformation.AppendFormat("Volume contains {0} partitions", lvid.numberOfPartitions).AppendLine();
sbInformation
.AppendFormat("Volume contains {0} files and {1} directories", lvidiu.files, lvidiu.directories)
.AppendLine();
sbInformation.AppendFormat("Volume conforms to {0}",
Encoding.GetString(lvd.domainIdentifier.identifier).TrimEnd('\u0000'))
.AppendLine();
sbInformation.AppendFormat("Volume was last written by: {0}",
Encoding.GetString(pvd.implementationIdentifier.identifier).TrimEnd('\u0000'))
.AppendLine();
sbInformation.AppendFormat("Volume requires UDF version {0}.{1:X2} to be read",
Convert.ToInt32($"{(lvidiu.minimumReadUDF & 0xFF00) >> 8}", 10),
Convert.ToInt32($"{lvidiu.minimumReadUDF & 0xFF}", 10)).AppendLine();
sbInformation.AppendFormat("Volume requires UDF version {0}.{1:X2} to be written to",
Convert.ToInt32($"{(lvidiu.minimumWriteUDF & 0xFF00) >> 8}", 10),
Convert.ToInt32($"{lvidiu.minimumWriteUDF & 0xFF}", 10)).AppendLine();
sbInformation.AppendFormat("Volume cannot be written by any UDF version higher than {0}.{1:X2}",
Convert.ToInt32($"{(lvidiu.maximumWriteUDF & 0xFF00) >> 8}", 10),
Convert.ToInt32($"{lvidiu.maximumWriteUDF & 0xFF}", 10)).AppendLine();
XmlFsType = new FileSystemType
{
Type =
$"UDF v{Convert.ToInt32($"{(lvidiu.maximumWriteUDF & 0xFF00) >> 8}", 10)}.{Convert.ToInt32($"{lvidiu.maximumWriteUDF & 0xFF}", 10):X2}",
ApplicationIdentifier = Encoding.GetString(pvd.implementationIdentifier.identifier).TrimEnd('\u0000'),
ClusterSize = (int)lvd.logicalBlockSize,
ModificationDate = EcmaToDateTime(lvid.recordingDateTime),
ModificationDateSpecified = true,
Files = lvidiu.files,
FilesSpecified = true,
VolumeName = StringHandlers.DecompressUnicode(lvd.logicalVolumeIdentifier),
VolumeSetIdentifier = StringHandlers.DecompressUnicode(pvd.volumeSetIdentifier),
SystemIdentifier = Encoding.GetString(pvd.implementationIdentifier.identifier).TrimEnd('\u0000')
};
XmlFsType.Clusters = (long)((partition.End - partition.Start + 1) * imagePlugin.Info.SectorSize /
(ulong)XmlFsType.ClusterSize);
information = sbInformation.ToString();
}
public PrimaryVolumeDescriptorRegion(PrimaryVolumeDescriptor descriptor, long start)
: base(start)
{
_descriptor = descriptor;
}
public PrimaryVolumeDescriptorRegion(PrimaryVolumeDescriptor descriptor, long start, int sectorSize)
: base(start, sectorSize)
{
_descriptor = descriptor;
}
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) // 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:
{
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);
}
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;
_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 = DecodePathTable(pathTableData);
if (jolietvd is null &&
_namespace == Namespace.Joliet)
{
_namespace = Namespace.Normal;
}
uint rootLocation;
uint rootSize;
byte rootXattrLength = 0;
rootLocation = pvd.Value.root_directory_record.extent;
rootXattrLength = pvd.Value.root_directory_record.xattr_len;
rootSize = 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;
{
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);
{
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;
}
}
if (_usePathTable && pathTableData.Length == 1)
{
_usePathTable = false;
}
if (_usePathTable)
{
rootLocation = _pathTable[0].Extent;
byte[] firstRootSector = ReadSector(rootLocation);
{
DirectoryRecord rootEntry =
Marshal.ByteArrayToStructureLittleEndian <DirectoryRecord>(firstRootSector);
rootSize = rootEntry.size;
}
rootXattrLength = _pathTable[0].XattrLength;
}
try
{
_ = ReadSingleExtent(rootSize, rootLocation);
}
catch
{
return(Errno.InvalidArgument);
}
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 = DecodeIsoDirectory(rootLocation + rootXattrLength, rootSize);
}
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);
decodedVd = decodedJolietVd;
}
if (_debug)
{
_rootDirectoryCache.Add("$", new DecodedDirectoryEntry
{
Extents = new List <(uint extent, uint size)>
{
(rootLocation, rootSize)
},
Filename = "$",
Size = rootSize,
Timestamp = decodedVd.CreationTime
});
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.ASCII;
information = "";
StringBuilder isoMetadata = new StringBuilder();
byte[] vdMagic = new byte[5]; // Volume Descriptor magic "CD001"
byte[] hsMagic = new byte[5]; // Volume Descriptor magic "CDROM"
string bootSpec = "";
PrimaryVolumeDescriptor?pvd = null;
PrimaryVolumeDescriptor?jolietvd = null;
BootRecord?bvd = null;
HighSierraPrimaryVolumeDescriptor?hsvd = null;
FileStructureVolumeDescriptor? fsvd = null;
ElToritoBootRecord?torito = null;
// ISO9660 is designed for 2048 bytes/sector devices
if (imagePlugin.Info.SectorSize < 2048)
{
return;
}
// ISO9660 Primary Volume Descriptor starts at sector 16, so that's minimal size.
if (partition.End < 16)
{
return;
}
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);
bool highSierra = Encoding.GetString(hsMagic) == HIGH_SIERRA_MAGIC;
int hsOff = 0;
if (highSierra)
{
hsOff = 8;
}
bool cdi = false;
while (true)
{
DicConsole.DebugWriteLine("ISO9660 plugin", "Processing VD loop no. {0}", counter);
// Seek to Volume Descriptor
DicConsole.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.
DicConsole.DebugWriteLine("ISO9660 plugin", "VDType = {0}", vdType);
if (vdType == 255) // Supposedly we are in the PVD.
{
if (counter == 0)
{
return;
}
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;
}
break;
}
cdi |= Encoding.GetString(vdMagic) == CDI_MAGIC;
switch (vdType)
{
case 0:
{
IntPtr ptr = Marshal.AllocHGlobal(2048);
Marshal.Copy(vdSector, hsOff, ptr, 2048 - hsOff);
bvd = (BootRecord)Marshal.PtrToStructure(ptr, typeof(BootRecord));
Marshal.FreeHGlobal(ptr);
bootSpec = "Unknown";
if (Encoding.GetString(bvd.Value.system_id).Substring(0, 23) == "EL TORITO SPECIFICATION")
{
bootSpec = "El Torito";
ptr = Marshal.AllocHGlobal(2048);
Marshal.Copy(vdSector, hsOff, ptr, 2048 - hsOff);
torito = (ElToritoBootRecord)Marshal.PtrToStructure(ptr, typeof(ElToritoBootRecord));
Marshal.FreeHGlobal(ptr);
}
break;
}
case 1:
{
if (highSierra)
{
IntPtr ptr = Marshal.AllocHGlobal(2048);
Marshal.Copy(vdSector, 0, ptr, 2048);
hsvd =
(HighSierraPrimaryVolumeDescriptor)
Marshal.PtrToStructure(ptr, typeof(HighSierraPrimaryVolumeDescriptor));
Marshal.FreeHGlobal(ptr);
}
else if (cdi)
{
fsvd =
BigEndianMarshal.ByteArrayToStructureBigEndian <FileStructureVolumeDescriptor>(vdSector);
}
else
{
IntPtr ptr = Marshal.AllocHGlobal(2048);
Marshal.Copy(vdSector, 0, ptr, 2048);
pvd = (PrimaryVolumeDescriptor)Marshal.PtrToStructure(ptr, typeof(PrimaryVolumeDescriptor));
Marshal.FreeHGlobal(ptr);
}
break;
}
case 2:
{
IntPtr ptr = Marshal.AllocHGlobal(2048);
Marshal.Copy(vdSector, 0, ptr, 2048);
PrimaryVolumeDescriptor svd =
(PrimaryVolumeDescriptor)Marshal.PtrToStructure(ptr, typeof(PrimaryVolumeDescriptor));
Marshal.FreeHGlobal(ptr);
// Check if this is Joliet
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
{
DicConsole.WriteLine("ISO9660 plugin", "Found unknown supplementary volume descriptor");
}
}
break;
}
}
counter++;
}
DecodedVolumeDescriptor decodedVd;
DecodedVolumeDescriptor decodedJolietVd = new DecodedVolumeDescriptor();
XmlFsType = new FileSystemType();
if (pvd == null && hsvd == null && fsvd == null)
{
information = "ERROR: Could not find primary volume descriptor";
return;
}
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);
}
uint rootLocation = 0;
uint rootSize = 0;
// No need to read root on CD-i, as extensions are not supported...
if (!cdi)
{
rootLocation = highSierra
? hsvd.Value.root_directory_record.extent
: pvd.Value.root_directory_record.extent;
if (highSierra)
{
rootSize = hsvd.Value.root_directory_record.size / hsvd.Value.logical_block_size;
if (hsvd.Value.root_directory_record.size % hsvd.Value.logical_block_size > 0)
{
rootSize++;
}
}
else
{
rootSize = pvd.Value.root_directory_record.size / pvd.Value.logical_block_size;
if (pvd.Value.root_directory_record.size % pvd.Value.logical_block_size > 0)
{
rootSize++;
}
}
}
byte[] rootDir = new byte[0];
int rootOff = 0;
bool xaExtensions = false;
bool apple = false;
bool susp = false;
bool rrip = false;
bool ziso = false;
bool amiga = false;
bool aaip = false;
List <ContinuationArea> contareas = new List <ContinuationArea>();
List <byte[]> refareas = new List <byte[]>();
StringBuilder suspInformation = new StringBuilder();
if (rootLocation + rootSize < imagePlugin.Info.Sectors)
{
rootDir = imagePlugin.ReadSectors(rootLocation, rootSize);
}
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
// Walk thru root directory to see system area extensions in use
while (rootOff + Marshal.SizeOf(typeof(DirectoryRecord)) < rootDir.Length && !cdi)
{
DirectoryRecord record = new DirectoryRecord();
IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(record));
Marshal.Copy(rootDir, rootOff, ptr, Marshal.SizeOf(record));
record = (DirectoryRecord)Marshal.PtrToStructure(ptr, typeof(DirectoryRecord));
Marshal.FreeHGlobal(ptr);
int saOff = Marshal.SizeOf(record) + record.name_len;
saOff += saOff % 2;
int saLen = record.length - saOff;
if (saLen > 0 && rootOff + saOff + saLen <= rootDir.Length)
{
byte[] sa = new byte[saLen];
Array.Copy(rootDir, rootOff + saOff, sa, 0, saLen);
saOff = 0;
while (saOff < saLen)
{
bool noneFound = true;
if (Marshal.SizeOf(typeof(CdromXa)) + saOff <= saLen)
{
CdromXa xa = BigEndianMarshal.ByteArrayToStructureBigEndian <CdromXa>(sa);
if (xa.signature == XA_MAGIC)
{
xaExtensions = true;
saOff += Marshal.SizeOf(typeof(CdromXa));
noneFound = false;
}
}
if (saOff + 2 >= saLen)
{
break;
}
ushort nextSignature = BigEndianBitConverter.ToUInt16(sa, saOff);
switch (nextSignature)
{
// Easy, contains size field
case APPLE_MAGIC:
apple = true;
saOff += sa[saOff + 2];
noneFound = false;
break;
// Not easy, contains size field
case APPLE_MAGIC_OLD:
apple = true;
AppleOldId appleId = (AppleOldId)sa[saOff + 2];
noneFound = false;
switch (appleId)
{
case AppleOldId.ProDOS:
saOff += Marshal.SizeOf(typeof(AppleProDOSOldSystemUse));
break;
case AppleOldId.TypeCreator:
case AppleOldId.TypeCreatorBundle:
saOff += Marshal.SizeOf(typeof(AppleHFSTypeCreatorSystemUse));
break;
case AppleOldId.TypeCreatorIcon:
case AppleOldId.TypeCreatorIconBundle:
saOff += Marshal.SizeOf(typeof(AppleHFSIconSystemUse));
break;
case AppleOldId.HFS:
saOff += Marshal.SizeOf(typeof(AppleHFSOldSystemUse));
break;
}
break;
// IEEE-P1281 aka SUSP 1.12
case SUSP_INDICATOR:
susp = true;
saOff += sa[saOff + 2];
noneFound = false;
while (saOff + 2 < saLen)
{
nextSignature = BigEndianBitConverter.ToUInt16(sa, saOff);
switch (nextSignature)
{
case APPLE_MAGIC:
if (sa[saOff + 3] == 1 && sa[saOff + 2] == 7)
{
apple = true;
}
else
{
apple |= sa[saOff + 3] != 1;
}
break;
case SUSP_CONTINUATION when saOff + sa[saOff + 2] <= saLen:
byte[] ce = new byte[sa[saOff + 2]];
Array.Copy(sa, saOff, ce, 0, ce.Length);
ContinuationArea ca = BigEndianMarshal
.ByteArrayToStructureBigEndian <ContinuationArea>(ce);
contareas.Add(ca);
break;
case SUSP_REFERENCE when saOff + sa[saOff + 2] <= saLen:
byte[] er = new byte[sa[saOff + 2]];
Array.Copy(sa, saOff, er, 0, er.Length);
refareas.Add(er);
break;
}
rrip |= nextSignature == RRIP_MAGIC ||
nextSignature == RRIP_POSIX_ATTRIBUTES ||
nextSignature == RRIP_POSIX_DEV_NO ||
nextSignature == RRIP_SYMLINK ||
nextSignature == RRIP_NAME ||
nextSignature == RRIP_CHILDLINK ||
nextSignature == RRIP_PARENTLINK ||
nextSignature == RRIP_RELOCATED_DIR ||
nextSignature == RRIP_TIMESTAMPS || nextSignature == RRIP_SPARSE;
ziso |= nextSignature == ZISO_MAGIC;
amiga |= nextSignature == AMIGA_MAGIC;
aaip |= nextSignature == AAIP_MAGIC || nextSignature == AAIP_MAGIC_OLD &&
sa[saOff + 3] == 1 &&
sa[saOff + 2] >= 9;
saOff += sa[saOff + 2];
if (nextSignature == SUSP_TERMINATOR)
{
break;
}
}
break;
}
if (noneFound)
{
break;
}
}
}
rootOff += record.length;
if (record.length == 0)
{
break;
}
}
foreach (ContinuationArea ca in contareas)
{
uint caLen = (ca.ca_length_be + ca.offset_be) /
(highSierra ? hsvd.Value.logical_block_size : pvd.Value.logical_block_size);
if ((ca.ca_length_be + ca.offset_be) %
(highSierra ? hsvd.Value.logical_block_size : pvd.Value.logical_block_size) > 0)
{
caLen++;
}
byte[] caSectors = imagePlugin.ReadSectors(ca.block_be, caLen);
byte[] caData = new byte[ca.ca_length_be];
Array.Copy(caSectors, ca.offset_be, caData, 0, ca.ca_length_be);
int caOff = 0;
while (caOff < ca.ca_length_be)
{
ushort nextSignature = BigEndianBitConverter.ToUInt16(caData, caOff);
switch (nextSignature)
{
// Apple never said to include its extensions inside a continuation area, but just in case
case APPLE_MAGIC:
if (caData[caOff + 3] == 1 && caData[caOff + 2] == 7)
{
apple = true;
}
else
{
apple |= caData[caOff + 3] != 1;
}
break;
case SUSP_REFERENCE when caOff + caData[caOff + 2] <= ca.ca_length_be:
byte[] er = new byte[caData[caOff + 2]];
Array.Copy(caData, caOff, er, 0, er.Length);
refareas.Add(er);
break;
}
rrip |= nextSignature == RRIP_MAGIC || nextSignature == RRIP_POSIX_ATTRIBUTES ||
nextSignature == RRIP_POSIX_DEV_NO || nextSignature == RRIP_SYMLINK ||
nextSignature == RRIP_NAME || nextSignature == RRIP_CHILDLINK ||
nextSignature == RRIP_PARENTLINK || nextSignature == RRIP_RELOCATED_DIR ||
nextSignature == RRIP_TIMESTAMPS || nextSignature == RRIP_SPARSE;
ziso |= nextSignature == ZISO_MAGIC;
amiga |= nextSignature == AMIGA_MAGIC;
aaip |= nextSignature == AAIP_MAGIC || nextSignature == AAIP_MAGIC_OLD && caData[caOff + 3] == 1 &&
caData[caOff + 2] >= 9;
caOff += caData[caOff + 2];
}
}
if (refareas.Count > 0)
{
suspInformation.AppendLine("----------------------------------------");
suspInformation.AppendLine("SYSTEM USE SHARING PROTOCOL INFORMATION:");
suspInformation.AppendLine("----------------------------------------");
counter = 1;
foreach (byte[] erb in refareas)
{
ReferenceArea er = BigEndianMarshal.ByteArrayToStructureBigEndian <ReferenceArea>(erb);
string extId =
Encoding.GetString(erb, Marshal.SizeOf(er), er.id_len);
string extDes =
Encoding.GetString(erb, Marshal.SizeOf(er) + er.id_len, er.des_len);
string extSrc =
Encoding.GetString(erb, Marshal.SizeOf(er) + er.id_len + er.des_len, er.src_len);
suspInformation.AppendFormat("Extension: {0}", counter).AppendLine();
suspInformation.AppendFormat("\tID: {0}, version {1}", extId, er.ext_ver).AppendLine();
suspInformation.AppendFormat("\tDescription: {0}", extDes).AppendLine();
suspInformation.AppendFormat("\tSource: {0}", extSrc).AppendLine();
counter++;
}
}
byte[] ipbinSector = imagePlugin.ReadSector(0 + partition.Start);
CD.IPBin? segaCd = CD.DecodeIPBin(ipbinSector);
Saturn.IPBin? saturn = Saturn.DecodeIPBin(ipbinSector);
Dreamcast.IPBin?dreamcast = Dreamcast.DecodeIPBin(ipbinSector);
string fsFormat;
if (highSierra)
{
fsFormat = "High Sierra Format";
}
else if (cdi)
{
fsFormat = "CD-i";
}
else
{
fsFormat = "ISO9660";
}
isoMetadata.AppendFormat("{0} file system", fsFormat).AppendLine();
if (xaExtensions)
{
isoMetadata.AppendLine("CD-ROM XA extensions present.");
}
if (amiga)
{
isoMetadata.AppendLine("Amiga extensions present.");
}
if (apple)
{
isoMetadata.AppendLine("Apple extensions present.");
}
if (jolietvd != null)
{
isoMetadata.AppendLine("Joliet extensions present.");
}
if (susp)
{
isoMetadata.AppendLine("System Use Sharing Protocol present.");
}
if (rrip)
{
isoMetadata.AppendLine("Rock Ridge Interchange Protocol present.");
}
if (aaip)
{
isoMetadata.AppendLine("Arbitrary Attribute Interchange Protocol present.");
}
if (ziso)
{
isoMetadata.AppendLine("zisofs compression present.");
}
if (bvd != null)
{
isoMetadata.AppendFormat("Disc bootable following {0} specifications.", bootSpec).AppendLine();
}
if (segaCd != null)
{
isoMetadata.AppendLine("This is a SegaCD / MegaCD disc.");
isoMetadata.AppendLine(CD.Prettify(segaCd));
}
if (saturn != null)
{
isoMetadata.AppendLine("This is a Sega Saturn disc.");
isoMetadata.AppendLine(Saturn.Prettify(saturn));
}
if (dreamcast != null)
{
isoMetadata.AppendLine("This is a Sega Dreamcast disc.");
isoMetadata.AppendLine(Dreamcast.Prettify(dreamcast));
}
isoMetadata.AppendFormat("{0}------------------------------", cdi ? "---------------" : "").AppendLine();
isoMetadata.AppendFormat("{0}VOLUME DESCRIPTOR INFORMATION:", cdi ? "FILE STRUCTURE " : "").AppendLine();
isoMetadata.AppendFormat("{0}------------------------------", cdi ? "---------------" : "").AppendLine();
isoMetadata.AppendFormat("System identifier: {0}", decodedVd.SystemIdentifier).AppendLine();
isoMetadata.AppendFormat("Volume identifier: {0}", decodedVd.VolumeIdentifier).AppendLine();
isoMetadata.AppendFormat("Volume set identifier: {0}", decodedVd.VolumeSetIdentifier).AppendLine();
isoMetadata.AppendFormat("Publisher identifier: {0}", decodedVd.PublisherIdentifier).AppendLine();
isoMetadata.AppendFormat("Data preparer identifier: {0}", decodedVd.DataPreparerIdentifier).AppendLine();
isoMetadata.AppendFormat("Application identifier: {0}", decodedVd.ApplicationIdentifier).AppendLine();
isoMetadata.AppendFormat("Volume creation date: {0}", decodedVd.CreationTime).AppendLine();
if (decodedVd.HasModificationTime)
{
isoMetadata.AppendFormat("Volume modification date: {0}", decodedVd.ModificationTime).AppendLine();
}
else
{
isoMetadata.AppendFormat("Volume has not been modified.").AppendLine();
}
if (decodedVd.HasExpirationTime)
{
isoMetadata.AppendFormat("Volume expiration date: {0}", decodedVd.ExpirationTime).AppendLine();
}
else
{
isoMetadata.AppendFormat("Volume does not expire.").AppendLine();
}
if (decodedVd.HasEffectiveTime)
{
isoMetadata.AppendFormat("Volume effective date: {0}", decodedVd.EffectiveTime).AppendLine();
}
else
{
isoMetadata.AppendFormat("Volume has always been effective.").AppendLine();
}
isoMetadata.AppendFormat("Volume has {0} blocks of {1} bytes each", decodedVd.Blocks, decodedVd.BlockSize)
.AppendLine();
if (jolietvd != null)
{
isoMetadata.AppendLine("-------------------------------------");
isoMetadata.AppendLine("JOLIET VOLUME DESCRIPTOR INFORMATION:");
isoMetadata.AppendLine("-------------------------------------");
isoMetadata.AppendFormat("System identifier: {0}", decodedJolietVd.SystemIdentifier).AppendLine();
isoMetadata.AppendFormat("Volume identifier: {0}", decodedJolietVd.VolumeIdentifier).AppendLine();
isoMetadata.AppendFormat("Volume set identifier: {0}", decodedJolietVd.VolumeSetIdentifier)
.AppendLine();
isoMetadata.AppendFormat("Publisher identifier: {0}", decodedJolietVd.PublisherIdentifier).AppendLine();
isoMetadata.AppendFormat("Data preparer identifier: {0}", decodedJolietVd.DataPreparerIdentifier)
.AppendLine();
isoMetadata.AppendFormat("Application identifier: {0}", decodedJolietVd.ApplicationIdentifier)
.AppendLine();
isoMetadata.AppendFormat("Volume creation date: {0}", decodedJolietVd.CreationTime).AppendLine();
if (decodedJolietVd.HasModificationTime)
{
isoMetadata.AppendFormat("Volume modification date: {0}", decodedJolietVd.ModificationTime)
.AppendLine();
}
else
{
isoMetadata.AppendFormat("Volume has not been modified.").AppendLine();
}
if (decodedJolietVd.HasExpirationTime)
{
isoMetadata.AppendFormat("Volume expiration date: {0}", decodedJolietVd.ExpirationTime)
.AppendLine();
}
else
{
isoMetadata.AppendFormat("Volume does not expire.").AppendLine();
}
if (decodedJolietVd.HasEffectiveTime)
{
isoMetadata.AppendFormat("Volume effective date: {0}", decodedJolietVd.EffectiveTime).AppendLine();
}
else
{
isoMetadata.AppendFormat("Volume has always been effective.").AppendLine();
}
}
if (torito != null)
{
vdSector = imagePlugin.ReadSector(torito.Value.catalog_sector + partition.Start);
int toritoOff = 0;
if (vdSector[toritoOff] != 1)
{
goto exit_torito;
}
IntPtr ptr = Marshal.AllocHGlobal(EL_TORITO_ENTRY_SIZE);
Marshal.Copy(vdSector, toritoOff, ptr, EL_TORITO_ENTRY_SIZE);
ElToritoValidationEntry valentry =
(ElToritoValidationEntry)Marshal.PtrToStructure(ptr, typeof(ElToritoValidationEntry));
Marshal.FreeHGlobal(ptr);
if (valentry.signature != EL_TORITO_MAGIC)
{
goto exit_torito;
}
toritoOff += EL_TORITO_ENTRY_SIZE;
ptr = Marshal.AllocHGlobal(EL_TORITO_ENTRY_SIZE);
Marshal.Copy(vdSector, toritoOff, ptr, EL_TORITO_ENTRY_SIZE);
ElToritoInitialEntry initialEntry =
(ElToritoInitialEntry)Marshal.PtrToStructure(ptr, typeof(ElToritoInitialEntry));
Marshal.FreeHGlobal(ptr);
initialEntry.boot_type = (ElToritoEmulation)((byte)initialEntry.boot_type & 0xF);
DicConsole.DebugWriteLine("DEBUG (ISO9660 plugin)", "initialEntry.load_rba = {0}",
initialEntry.load_rba);
DicConsole.DebugWriteLine("DEBUG (ISO9660 plugin)", "initialEntry.sector_count = {0}",
initialEntry.sector_count);
byte[] bootImage =
initialEntry.load_rba + partition.Start + initialEntry.sector_count - 1 <= partition.End
? imagePlugin.ReadSectors(initialEntry.load_rba + partition.Start, initialEntry.sector_count)
: null;
isoMetadata.AppendLine("----------------------");
isoMetadata.AppendLine("EL TORITO INFORMATION:");
isoMetadata.AppendLine("----------------------");
isoMetadata.AppendLine("Initial entry:");
isoMetadata.AppendFormat("\tDeveloper ID: {0}", Encoding.GetString(valentry.developer_id)).AppendLine();
if (initialEntry.bootable == ElToritoIndicator.Bootable)
{
isoMetadata.AppendFormat("\tBootable on {0}", valentry.platform_id).AppendLine();
isoMetadata.AppendFormat("\tBootable image starts at sector {0} and runs for {1} sectors",
initialEntry.load_rba, initialEntry.sector_count).AppendLine();
if (valentry.platform_id == ElToritoPlatform.x86)
{
isoMetadata.AppendFormat("\tBootable image will be loaded at segment {0:X4}h",
initialEntry.load_seg == 0 ? 0x7C0 : initialEntry.load_seg)
.AppendLine();
}
else
{
isoMetadata.AppendFormat("\tBootable image will be loaded at 0x{0:X8}",
(uint)initialEntry.load_seg * 10).AppendLine();
}
switch (initialEntry.boot_type)
{
case ElToritoEmulation.None:
isoMetadata.AppendLine("\tImage uses no emulation");
break;
case ElToritoEmulation.Md2hd:
isoMetadata.AppendLine("\tImage emulates a 5.25\" high-density (MD2HD, 1.2Mb) floppy");
break;
case ElToritoEmulation.Mf2hd:
isoMetadata.AppendLine("\tImage emulates a 3.5\" high-density (MF2HD, 1.44Mb) floppy");
break;
case ElToritoEmulation.Mf2ed:
isoMetadata.AppendLine("\tImage emulates a 3.5\" extra-density (MF2ED, 2.88Mb) floppy");
break;
default:
isoMetadata.AppendFormat("\tImage uses unknown emulation type {0}",
(byte)initialEntry.boot_type).AppendLine();
break;
}
isoMetadata.AppendFormat("\tSystem type: 0x{0:X2}", initialEntry.system_type).AppendLine();
if (bootImage != null)
{
isoMetadata.AppendFormat("\tBootable image's SHA1: {0}", Sha1Context.Data(bootImage, out _))
.AppendLine();
}
}
else
{
isoMetadata.AppendLine("\tNot bootable");
}
toritoOff += EL_TORITO_ENTRY_SIZE;
const int SECTION_COUNTER = 2;
while (toritoOff < vdSector.Length && (vdSector[toritoOff] == (byte)ElToritoIndicator.Header ||
vdSector[toritoOff] == (byte)ElToritoIndicator.LastHeader))
{
ptr = Marshal.AllocHGlobal(EL_TORITO_ENTRY_SIZE);
Marshal.Copy(vdSector, toritoOff, ptr, EL_TORITO_ENTRY_SIZE);
ElToritoSectionHeaderEntry sectionHeader =
(ElToritoSectionHeaderEntry)Marshal.PtrToStructure(ptr, typeof(ElToritoSectionHeaderEntry));
Marshal.FreeHGlobal(ptr);
toritoOff += EL_TORITO_ENTRY_SIZE;
isoMetadata.AppendFormat("Boot section {0}:", SECTION_COUNTER);
isoMetadata.AppendFormat("\tSection ID: {0}", Encoding.GetString(sectionHeader.identifier))
.AppendLine();
for (int entryCounter = 1; entryCounter <= sectionHeader.entries && toritoOff < vdSector.Length;
entryCounter++)
{
ptr = Marshal.AllocHGlobal(EL_TORITO_ENTRY_SIZE);
Marshal.Copy(vdSector, toritoOff, ptr, EL_TORITO_ENTRY_SIZE);
ElToritoSectionEntry sectionEntry =
(ElToritoSectionEntry)Marshal.PtrToStructure(ptr, typeof(ElToritoSectionEntry));
Marshal.FreeHGlobal(ptr);
toritoOff += EL_TORITO_ENTRY_SIZE;
isoMetadata.AppendFormat("\tEntry {0}:", entryCounter);
if (sectionEntry.bootable == ElToritoIndicator.Bootable)
{
bootImage =
sectionEntry.load_rba + partition.Start + sectionEntry.sector_count - 1 <= partition.End
? imagePlugin.ReadSectors(sectionEntry.load_rba + partition.Start,
sectionEntry.sector_count)
: null;
isoMetadata.AppendFormat("\t\tBootable on {0}", sectionHeader.platform_id).AppendLine();
isoMetadata.AppendFormat("\t\tBootable image starts at sector {0} and runs for {1} sectors",
sectionEntry.load_rba, sectionEntry.sector_count).AppendLine();
if (valentry.platform_id == ElToritoPlatform.x86)
{
isoMetadata.AppendFormat("\t\tBootable image will be loaded at segment {0:X4}h",
sectionEntry.load_seg == 0 ? 0x7C0 : sectionEntry.load_seg)
.AppendLine();
}
else
{
isoMetadata.AppendFormat("\t\tBootable image will be loaded at 0x{0:X8}",
(uint)sectionEntry.load_seg * 10).AppendLine();
}
switch ((ElToritoEmulation)((byte)sectionEntry.boot_type & 0xF))
{
case ElToritoEmulation.None:
isoMetadata.AppendLine("\t\tImage uses no emulation");
break;
case ElToritoEmulation.Md2hd:
isoMetadata
.AppendLine("\t\tImage emulates a 5.25\" high-density (MD2HD, 1.2Mb) floppy");
break;
case ElToritoEmulation.Mf2hd:
isoMetadata
.AppendLine("\t\tImage emulates a 3.5\" high-density (MF2HD, 1.44Mb) floppy");
break;
case ElToritoEmulation.Mf2ed:
isoMetadata
.AppendLine("\t\tImage emulates a 3.5\" extra-density (MF2ED, 2.88Mb) floppy");
break;
default:
isoMetadata.AppendFormat("\t\tImage uses unknown emulation type {0}",
(byte)initialEntry.boot_type).AppendLine();
break;
}
isoMetadata.AppendFormat("\t\tSelection criteria type: {0}",
sectionEntry.selection_criteria_type).AppendLine();
isoMetadata.AppendFormat("\t\tSystem type: 0x{0:X2}", sectionEntry.system_type)
.AppendLine();
if (bootImage != null)
{
isoMetadata.AppendFormat("\t\tBootable image's SHA1: {0}",
Sha1Context.Data(bootImage, out _)).AppendLine();
}
}
else
{
isoMetadata.AppendLine("\t\tNot bootable");
}
ElToritoFlags flags = (ElToritoFlags)((byte)sectionEntry.boot_type & 0xF0);
if (flags.HasFlag(ElToritoFlags.ATAPI))
{
isoMetadata.AppendLine("\t\tImage contains ATAPI drivers");
}
if (flags.HasFlag(ElToritoFlags.SCSI))
{
isoMetadata.AppendLine("\t\tImage contains SCSI drivers");
}
if (!flags.HasFlag(ElToritoFlags.Continued))
{
continue;
}
while (toritoOff < vdSector.Length)
{
ptr = Marshal.AllocHGlobal(EL_TORITO_ENTRY_SIZE);
Marshal.Copy(vdSector, toritoOff, ptr, EL_TORITO_ENTRY_SIZE);
ElToritoSectionEntryExtension sectionExtension =
(ElToritoSectionEntryExtension)
Marshal.PtrToStructure(ptr, typeof(ElToritoSectionEntryExtension));
Marshal.FreeHGlobal(ptr);
toritoOff += EL_TORITO_ENTRY_SIZE;
if (!sectionExtension.extension_flags.HasFlag(ElToritoFlags.Continued))
{
break;
}
}
}
if (sectionHeader.header_id == ElToritoIndicator.LastHeader)
{
break;
}
}
}
exit_torito:
if (refareas.Count > 0)
{
isoMetadata.Append(suspInformation);
}
XmlFsType.Type = fsFormat;
if (jolietvd != null)
{
XmlFsType.VolumeName = decodedJolietVd.VolumeIdentifier;
if (decodedJolietVd.SystemIdentifier == null ||
decodedVd.SystemIdentifier.Length > decodedJolietVd.SystemIdentifier.Length)
{
XmlFsType.SystemIdentifier = decodedVd.SystemIdentifier;
}
else
{
XmlFsType.SystemIdentifier = decodedJolietVd.SystemIdentifier;
}
if (decodedJolietVd.VolumeSetIdentifier == null || decodedVd.VolumeSetIdentifier.Length >
decodedJolietVd.VolumeSetIdentifier.Length)
{
XmlFsType.VolumeSetIdentifier = decodedVd.VolumeSetIdentifier;
}
else
{
XmlFsType.VolumeSetIdentifier = decodedJolietVd.VolumeSetIdentifier;
}
if (decodedJolietVd.PublisherIdentifier == null || decodedVd.PublisherIdentifier.Length >
decodedJolietVd.PublisherIdentifier.Length)
{
XmlFsType.PublisherIdentifier = decodedVd.PublisherIdentifier;
}
else
{
XmlFsType.PublisherIdentifier = decodedJolietVd.PublisherIdentifier;
}
if (decodedJolietVd.DataPreparerIdentifier == null || decodedVd.DataPreparerIdentifier.Length >
decodedJolietVd.DataPreparerIdentifier.Length)
{
XmlFsType.DataPreparerIdentifier = decodedVd.DataPreparerIdentifier;
}
else
{
XmlFsType.DataPreparerIdentifier = decodedJolietVd.SystemIdentifier;
}
if (decodedJolietVd.ApplicationIdentifier == null || decodedVd.ApplicationIdentifier.Length >
decodedJolietVd.ApplicationIdentifier.Length)
{
XmlFsType.ApplicationIdentifier = decodedVd.ApplicationIdentifier;
}
else
{
XmlFsType.ApplicationIdentifier = decodedJolietVd.SystemIdentifier;
}
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;
}
}
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;
}
}
XmlFsType.Bootable |= bvd != null || segaCd != null || saturn != null || dreamcast != null;
XmlFsType.Clusters = decodedVd.Blocks;
XmlFsType.ClusterSize = decodedVd.BlockSize;
information = isoMetadata.ToString();
}
public PrimaryVolumeDescriptorRegion(PrimaryVolumeDescriptor descriptor, long start)
: base(start)
{
_descriptor = descriptor;
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
// UDF is always UTF-8
Encoding = Encoding.UTF8;
byte[] sector;
var sbInformation = new StringBuilder();
sbInformation.AppendLine("Universal Disk Format");
var anchor = new AnchorVolumeDescriptorPointer();
// All positions where anchor may reside, with the ratio between 512 and 2048bps
ulong[][] positions =
{
new ulong[]
{
256, 1
},
new ulong[]
{
512, 1
},
new ulong[]
{
partition.End - 256, 1
},
new ulong[]
{
partition.End, 1
},
new ulong[]
{
1024, 4
},
new ulong[]
{
2048, 4
},
new ulong[]
{
partition.End - 1024, 4
},
new ulong[]
{
partition.End - 4, 4
}
};
uint ratio = 1;
foreach(ulong[] position in positions)
{
sector = imagePlugin.ReadSectors(position[0], (uint)position[1]);
anchor = Marshal.ByteArrayToStructureLittleEndian<AnchorVolumeDescriptorPointer>(sector);
if(anchor.tag.tagIdentifier != TagIdentifier.AnchorVolumeDescriptorPointer ||
anchor.tag.tagLocation != position[0] / position[1] ||
anchor.mainVolumeDescriptorSequenceExtent.location + partition.Start >= partition.End)
continue;
ratio = (uint)position[1];
break;
}
ulong count = 0;
var pvd = new PrimaryVolumeDescriptor();
var lvd = new LogicalVolumeDescriptor();
var lvid = new LogicalVolumeIntegrityDescriptor();
var lvidiu = new LogicalVolumeIntegrityDescriptorImplementationUse();
while(count < 256)
{
sector =
imagePlugin.
ReadSectors(partition.Start + (anchor.mainVolumeDescriptorSequenceExtent.location * ratio) + (count * ratio),
ratio);
var tagId = (TagIdentifier)BitConverter.ToUInt16(sector, 0);
uint location = BitConverter.ToUInt32(sector, 0x0C);
if(location == (partition.Start / ratio) + anchor.mainVolumeDescriptorSequenceExtent.location + count)
{
if(tagId == TagIdentifier.TerminatingDescriptor)
break;
switch(tagId)
{
case TagIdentifier.LogicalVolumeDescriptor:
lvd = Marshal.ByteArrayToStructureLittleEndian<LogicalVolumeDescriptor>(sector);
break;
case TagIdentifier.PrimaryVolumeDescriptor:
pvd = Marshal.ByteArrayToStructureLittleEndian<PrimaryVolumeDescriptor>(sector);
break;
}
}
else
break;
count++;
}
sector = imagePlugin.ReadSectors(lvd.integritySequenceExtent.location * ratio, ratio);
lvid = Marshal.ByteArrayToStructureLittleEndian<LogicalVolumeIntegrityDescriptor>(sector);
if(lvid.tag.tagIdentifier == TagIdentifier.LogicalVolumeIntegrityDescriptor &&
lvid.tag.tagLocation == lvd.integritySequenceExtent.location)
lvidiu =
Marshal.ByteArrayToStructureLittleEndian<LogicalVolumeIntegrityDescriptorImplementationUse>(sector,
(int)((lvid.numberOfPartitions * 8) + 80),
System.Runtime.InteropServices.Marshal.SizeOf(lvidiu));
else
lvid = new LogicalVolumeIntegrityDescriptor();
sbInformation.AppendFormat("Volume is number {0} of {1}", pvd.volumeSequenceNumber,
pvd.maximumVolumeSequenceNumber).AppendLine();
sbInformation.AppendFormat("Volume set identifier: {0}",
StringHandlers.DecompressUnicode(pvd.volumeSetIdentifier)).AppendLine();
sbInformation.
AppendFormat("Volume name: {0}", StringHandlers.DecompressUnicode(lvd.logicalVolumeIdentifier)).
AppendLine();
sbInformation.AppendFormat("Volume uses {0} bytes per block", lvd.logicalBlockSize).AppendLine();
sbInformation.AppendFormat("Volume was last written in {0}", EcmaToDateTime(lvid.recordingDateTime)).
AppendLine();
sbInformation.AppendFormat("Volume contains {0} partitions", lvid.numberOfPartitions).AppendLine();
sbInformation.
AppendFormat("Volume contains {0} files and {1} directories", lvidiu.files, lvidiu.directories).
AppendLine();
sbInformation.AppendFormat("Volume conforms to {0}",
Encoding.GetString(lvd.domainIdentifier.identifier).TrimEnd('\u0000')).
AppendLine();
sbInformation.AppendFormat("Volume was last written by: {0}",
Encoding.GetString(pvd.implementationIdentifier.identifier).TrimEnd('\u0000')).
AppendLine();
sbInformation.AppendFormat("Volume requires UDF version {0}.{1:X2} to be read",
Convert.ToInt32($"{(lvidiu.minimumReadUDF & 0xFF00) >> 8}", 10),
Convert.ToInt32($"{lvidiu.minimumReadUDF & 0xFF}", 10)).AppendLine();
sbInformation.AppendFormat("Volume requires UDF version {0}.{1:X2} to be written to",
Convert.ToInt32($"{(lvidiu.minimumWriteUDF & 0xFF00) >> 8}", 10),
Convert.ToInt32($"{lvidiu.minimumWriteUDF & 0xFF}", 10)).AppendLine();
sbInformation.AppendFormat("Volume cannot be written by any UDF version higher than {0}.{1:X2}",
Convert.ToInt32($"{(lvidiu.maximumWriteUDF & 0xFF00) >> 8}", 10),
Convert.ToInt32($"{lvidiu.maximumWriteUDF & 0xFF}", 10)).AppendLine();
XmlFsType = new FileSystemType
{
Type =
$"UDF v{Convert.ToInt32($"{(lvidiu.maximumWriteUDF & 0xFF00) >> 8}", 10)}.{Convert.ToInt32($"{lvidiu.maximumWriteUDF & 0xFF}", 10):X2}",
ApplicationIdentifier = Encoding.GetString(pvd.implementationIdentifier.identifier).TrimEnd('\u0000'),
ClusterSize = lvd.logicalBlockSize,
ModificationDate = EcmaToDateTime(lvid.recordingDateTime),
ModificationDateSpecified = true,
Files = lvidiu.files,
FilesSpecified = true,
VolumeName = StringHandlers.DecompressUnicode(lvd.logicalVolumeIdentifier),
VolumeSetIdentifier = StringHandlers.DecompressUnicode(pvd.volumeSetIdentifier),
VolumeSerial = StringHandlers.DecompressUnicode(pvd.volumeSetIdentifier),
SystemIdentifier = Encoding.GetString(pvd.implementationIdentifier.identifier).TrimEnd('\u0000')
};
XmlFsType.Clusters = (partition.End - partition.Start + 1) * imagePlugin.Info.SectorSize /
XmlFsType.ClusterSize;
information = sbInformation.ToString();
}
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"
if (options == null)
{
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
if (@namespace is null)
{
@namespace = "joliet";
}
switch (@namespace.ToLowerInvariant())
{
case "normal":
this.@namespace = Namespace.Normal;
break;
case "vms":
this.@namespace = Namespace.Vms;
break;
case "joliet":
this.@namespace = Namespace.Joliet;
break;
case "rrip":
this.@namespace = Namespace.Rrip;
break;
case "romeo":
this.@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)
{
DicConsole.DebugWriteLine("ISO9660 plugin", "Processing VD loop no. {0}", counter);
// Seek to Volume Descriptor
DicConsole.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.
DicConsole.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
{
DicConsole.WriteLine("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 chosing Romeo namespace, but using the EVD instead of the PVD
this.@namespace = Namespace.Romeo;
pvd = svd;
}
}
break;
}
case 3:
{
if (debug)
{
vpdSectors.Add(16 + counter + partition.Start);
}
break;
}
}
counter++;
}
DecodedVolumeDescriptor decodedVd;
DecodedVolumeDescriptor decodedJolietVd = new DecodedVolumeDescriptor();
XmlFsType = new FileSystemType();
if (pvd == null && hsvd == null && fsvd == null)
{
DicConsole.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 (this.@namespace != Namespace.Romeo)
{
Encoding = Encoding.ASCII;
}
string fsFormat;
byte[] pathTableData;
uint pathTableSizeInSectors;
uint pathTableMsbLocation;
uint pathTableLsbLocation = 0; // Initialize to 0 as ignored in CD-i
image = imagePlugin;
if (highSierra)
{
pathTableSizeInSectors = hsvd.Value.path_table_size / 2048;
if (hsvd.Value.path_table_size % 2048 > 0)
{
pathTableSizeInSectors++;
}
pathTableData = ReadSectors(Swapping.Swap(hsvd.Value.mandatory_path_table_msb), pathTableSizeInSectors);
fsFormat = "High Sierra Format";
pathTableMsbLocation = hsvd.Value.mandatory_path_table_msb;
pathTableLsbLocation = hsvd.Value.mandatory_path_table_lsb;
}
else if (cdi)
{
pathTableSizeInSectors = fsvd.Value.path_table_size / 2048;
if (fsvd.Value.path_table_size % 2048 > 0)
{
pathTableSizeInSectors++;
}
pathTableData = ReadSectors(fsvd.Value.path_table_addr, pathTableSizeInSectors);
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
{
pathTableSizeInSectors = pvd.Value.path_table_size / 2048;
if (pvd.Value.path_table_size % 2048 > 0)
{
pathTableSizeInSectors++;
}
pathTableData = ReadSectors(Swapping.Swap(pvd.Value.type_m_path_table), pathTableSizeInSectors);
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) && this.@namespace != Namespace.Normal && this.@namespace != Namespace.Vms)
{
this.@namespace = Namespace.Normal;
}
if (jolietvd is null && this.@namespace == Namespace.Joliet)
{
this.@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;
if (highSierra)
{
rootSize = hsvd.Value.root_directory_record.size / hsvd.Value.logical_block_size;
if (hsvd.Value.root_directory_record.size % hsvd.Value.logical_block_size > 0)
{
rootSize++;
}
}
else
{
rootSize = pvd.Value.root_directory_record.size / pvd.Value.logical_block_size;
if (pvd.Value.root_directory_record.size % pvd.Value.logical_block_size > 0)
{
rootSize++;
}
}
}
else
{
rootLocation = pathTable[0].Extent;
byte[] firstRootSector = ReadSectors(rootLocation, 1);
CdiDirectoryRecord rootEntry =
Marshal.ByteArrayToStructureBigEndian <CdiDirectoryRecord>(firstRootSector);
rootSize = rootEntry.size / fsvd.Value.logical_block_size;
if (rootEntry.size % fsvd.Value.logical_block_size > 0)
{
rootSize++;
}
usePathTable = usePathTable || pathTable.Length == 1;
useTransTbl = false;
}
// In case the path table is incomplete
if (usePathTable && pathTableData.Length == 1)
{
usePathTable = false;
}
if (rootLocation + rootSize >= imagePlugin.Info.Sectors)
{
return(Errno.InvalidArgument);
}
byte[] rootDir = ReadSectors(rootLocation, rootSize);
byte[] ipbinSector = ReadSectors(partition.Start, 1);
CD.IPBin? segaCd = CD.DecodeIPBin(ipbinSector);
Saturn.IPBin? saturn = Saturn.DecodeIPBin(ipbinSector);
Dreamcast.IPBin?dreamcast = Dreamcast.DecodeIPBin(ipbinSector);
if (this.@namespace == Namespace.Joliet || this.@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 (this.@namespace != Namespace.Joliet)
{
rootDirectoryCache = cdi
? DecodeCdiDirectory(rootLocation, rootSize, rootXattrLength)
: highSierra
? DecodeHighSierraDirectory(rootLocation, rootSize, rootXattrLength)
: DecodeIsoDirectory(rootLocation, rootSize, rootXattrLength);
}
XmlFsType.Type = fsFormat;
if (debug)
{
rootDirectoryCache.Add("$",
new DecodedDirectoryEntry
{
Extents =
new List <(uint extent, uint size)>
{
(rootLocation, (uint)rootDir.Length)
},
Filename = "$",
Size = (uint)rootDir.Length,
Timestamp = decodedVd.CreationTime
});
