public void Initialize(FileStream isoStream, long offset, bool isRawDump)
{
byte[] volumeIdentifierBytes;
this.SourceFileName = isoStream.Name;
this.FormatDescription = MicrosoftSTFS.FORMAT_DESCRIPTION_STRING;
this.VolumeBaseOffset = offset;
this.IsRawDump = isRawDump;
this.VolumeType = VolumeDataType.Data;
this.FileTableEntryArray = new ArrayList();
this.DirectoryStructureArray = new ArrayList();
// get identifier
volumeIdentifierBytes = ParseFile.ParseSimpleOffset(isoStream, this.VolumeBaseOffset + 0x1691, 0x80);
this.VolumeIdentifier = Encoding.BigEndianUnicode.GetString(volumeIdentifierBytes);
this.VolumeIdentifier = this.VolumeIdentifier.Substring(0, this.VolumeIdentifier.IndexOf('\0'));
// get header size
this.HeaderSize = ParseFile.ReadUintBE(isoStream, this.VolumeBaseOffset + 0x340);
// get file table info
this.BlockSeparation = ParseFile.ReadByte(isoStream, this.VolumeBaseOffset + 0x37B);
this.FileTableBlockCount = ParseFile.ReadInt16LE(isoStream, this.VolumeBaseOffset + 0x37C);
// not sure about endianess, always zero in my samples so far
this.FileTableBlockNumber = ParseFile.ReadInt24LE(isoStream, this.VolumeBaseOffset + 0x37E);
// parse file table
this.ParseFileTable(isoStream);
// build directory tree
this.BuildDirectoryTree();
}
public void ParseFileTable(FileStream isoStream)
{
FileTableEntry tableEntry = new FileTableEntry();
long fileTableMinOffset;
long fileTableMaxOffset;
long fileSize = isoStream.Length;
// get offset for blocks
fileTableMinOffset = ComputeBlockNumberAndGetOffset(this.FileTableBlockNumber, this.HeaderSize, this.BlockSeparation);
fileTableMaxOffset = ComputeBlockNumberAndGetOffset(this.FileTableBlockNumber + this.FileTableBlockCount, this.HeaderSize, this.BlockSeparation);
// check offsets
if ((fileTableMinOffset >= MicrosoftSTFS.FIRST_BLOCK_OFFSET) &&
(fileTableMinOffset < fileTableMaxOffset) &&
(fileTableMaxOffset < fileSize))
{
for (long i = fileTableMinOffset; i < fileTableMaxOffset; i += 0x40)
{
tableEntry.FileName = ParseFile.ReadAsciiString(isoStream, i);
if (!String.IsNullOrEmpty(tableEntry.FileName))
{
tableEntry.Flags = ParseFile.ReadByte(isoStream, i + 0x28);
tableEntry.BlocksForFileLE1 = ParseFile.ReadInt24LE(isoStream, i + 0x29);
tableEntry.BlocksForFileLE2 = ParseFile.ReadInt24LE(isoStream, i + 0x2C);
tableEntry.StartingBlockForFileLE = ParseFile.ReadInt24LE(isoStream, i + 0x2F);
tableEntry.PathIndicator = ParseFile.ReadInt16BE(isoStream, i + 0x32);
tableEntry.FileSize = ParseFile.ReadUintBE(isoStream, i + 0x34);
tableEntry.UpdateDateTime = ParseFile.ReadInt32BE(isoStream, i + 0x38);
tableEntry.AccessDateTime = ParseFile.ReadInt32BE(isoStream, i + 0x3C);
FileTableEntryArray.Add(tableEntry);
}
}
}
else
{
throw new IndexOutOfRangeException("File Table block IDs do not make sense.");
}
}
