public IndexBuffer(IDataStream stream, ulong vcn, FolderNTFS folder) {
_folder = folder;
_clusterStart = vcn * (ulong)(_folder._record.SectorsPerCluster * _folder._record.BytesPerSector);
String magic = Util.GetASCIIString(stream, _clusterStart + 0x0, 4);
if (!magic.Equals("INDX")) {
throw new Exception("Magic INDX value not present");
}
_entriesStart = (ushort)(Util.GetUInt16(stream, _clusterStart + 0x18) + 0x18);
_entriesEnd = (ushort)(Util.GetUInt16(stream, _clusterStart + 0x1c) + _entriesStart);
ushort updateSequenceOffset = Util.GetUInt16(stream, _clusterStart + 0x04);
ushort updateSequenceLength = Util.GetUInt16(stream, _clusterStart + 0x06);
ushort updateSequenceNumber = Util.GetUInt16(stream, _clusterStart + updateSequenceOffset);
ushort[] updateSequenceArray = new ushort[updateSequenceLength - 1];
ushort read = 1;
while (read < updateSequenceLength) {
updateSequenceArray[read - 1] = Util.GetUInt16(stream, _clusterStart + updateSequenceOffset + (ushort)(read * 2));
read++;
}
_stream = new FixupStream(stream, _clusterStart, _entriesEnd, updateSequenceNumber, updateSequenceArray, (ulong)folder.BytesPerSector);
if (_entriesEnd == _entriesStart) {
throw new Exception("Entry size was 0");
}
}
public IndexBuffer(IDataStream stream, ulong vcn, FolderNTFS folder)
{
_folder = folder;
_clusterStart = vcn * (ulong)(_folder._record.SectorsPerCluster * _folder._record.BytesPerSector);
String magic = Util.GetASCIIString(stream, _clusterStart + 0x0, 4);
if (!magic.Equals("INDX"))
{
throw new Exception("Magic INDX value not present");
}
_entriesStart = (ushort)(Util.GetUInt16(stream, _clusterStart + 0x18) + 0x18);
_entriesEnd = (ushort)(Util.GetUInt16(stream, _clusterStart + 0x1c) + _entriesStart);
ushort updateSequenceOffset = Util.GetUInt16(stream, _clusterStart + 0x04);
ushort updateSequenceLength = Util.GetUInt16(stream, _clusterStart + 0x06);
ushort updateSequenceNumber = Util.GetUInt16(stream, _clusterStart + updateSequenceOffset);
ushort[] updateSequenceArray = new ushort[updateSequenceLength - 1];
ushort read = 1;
while (read < updateSequenceLength)
{
updateSequenceArray[read - 1] = Util.GetUInt16(stream, _clusterStart + updateSequenceOffset + (ushort)(read * 2));
read++;
}
_stream = new FixupStream(stream, _clusterStart, _entriesEnd, updateSequenceNumber, updateSequenceArray, (ulong)folder.BytesPerSector);
if (_entriesEnd == _entriesStart)
{
throw new Exception("Entry size was 0");
}
}
public IndexEntry(IDataStream stream, ulong offset, FolderNTFS folder)
{
_folder = folder;
_stream = stream;
_offset = offset;
ulong mask = 0x0000ffffffffffff; // This is a hack
_indexedFile = Util.GetUInt64(stream, offset);
_indexEntryLength = Util.GetUInt16(stream, offset + 8);
_filenameOffset = Util.GetUInt16(stream, offset + 10);
_flags = Util.GetByte(stream, offset + 12);
if (_indexEntryLength > 0x50)
{
_filenameLength = Util.GetByte(stream, offset + 0x50);
Name = Util.GetUnicodeString(stream, offset + 0x52, (ulong)_filenameLength * 2);
DummyEntry = false;
}
else
{
// no filename, dummy entry
DummyEntry = true;
}
_recordNum = (_indexedFile & mask);
}
public IndexEntry(IDataStream stream, ulong offset, FolderNTFS folder) {
_folder = folder;
_stream = stream;
_offset = offset;
ulong mask = 0x0000ffffffffffff; // This is a hack
_indexedFile = Util.GetUInt64(stream, offset);
_indexEntryLength = Util.GetUInt16(stream, offset + 8);
_filenameOffset = Util.GetUInt16(stream, offset + 10);
_flags = Util.GetByte(stream, offset + 12);
if (_indexEntryLength > 0x50) {
_filenameLength = Util.GetByte(stream, offset + 0x50);
Name = Util.GetUnicodeString(stream, offset + 0x52, (ulong)_filenameLength * 2);
DummyEntry = false;
} else {
// no filename, dummy entry
DummyEntry = true;
}
_recordNum = (_indexedFile & mask);
}
