internal IndexAllocation(NonResident header, string volume)
{
// Headers
Name = (ATTR_TYPE)header.commonHeader.ATTRType;
NameString = header.NameString;
NonResident = header.commonHeader.NonResident;
AttributeId = header.commonHeader.Id;
// Get IndexAllocation Bytes
byte[] bytes = header.GetBytes(volume);
// Instantiate empty IndexEntry List
List<IndexEntry> indexEntryList = new List<IndexEntry>();
// Iterate through IndexBlocks (4096 bytes in size)
for (int offset = 0; offset < bytes.Length; offset += 4096)
{
// Detemine size of Update Sequence
ushort usOffset = BitConverter.ToUInt16(bytes, offset + 0x04);
ushort usSize = BitConverter.ToUInt16(bytes, offset + 0x06);
int indexBlockSize = usOffset + (usSize * 2);
if (indexBlockSize == 0)
{
break;
}
IndexBlock.ApplyFixup(ref bytes, offset);
// Instantiate IndexBlock Object (Header)
IndexBlock indexBlock = new IndexBlock(NativeMethods.GetSubArray(bytes, (uint)offset, (uint)indexBlockSize));
// Create byte array for IndexEntry object
// 0x18 represents the offset of the EntryOffset value, so it must be added on
byte[] indexEntryBytes = NativeMethods.GetSubArray(bytes, (uint)offset + indexBlock.EntryOffset + 0x18, indexBlock.TotalEntrySize);
int entryOffset = 0;
do
{
// Instantiate an IndexEntry Object
IndexEntry indexEntry = new IndexEntry(NativeMethods.GetSubArray(indexEntryBytes, (uint)entryOffset, BitConverter.ToUInt16(indexEntryBytes, entryOffset + 0x08)));
entryOffset += indexEntry.Size;
// Check if entry is the last in the Entry array
if (indexEntry.Flags == 0x02 || indexEntry.Flags == 0x03)
{
break;
}
// Add IndexEntry Object to list
indexEntryList.Add(indexEntry);
}while(entryOffset < indexEntryBytes.Length);
}
Entries = indexEntryList.ToArray();
}
public static IndexEntry[] GetInstances(string path)
{
string[] paths = path.TrimEnd('\\').Split('\\');
// Determine Volume Name
string volume = @"\\.\" + paths[0];
// Test volume path
NativeMethods.getVolumeName(ref volume);
int index = -1;
List<IndexEntry> indexEntryList = new List<IndexEntry>();
for (int i = 0; i < paths.Length; i++)
{
if (index == -1)
{
index = 5;
}
else
{
bool match = false;
foreach (IndexEntry entry in indexEntryList)
{
if (entry.Entry.Filename.ToUpper() == paths[i].ToUpper())
{
index = (int)entry.RecordNumber;
match = true;
}
}
if (!(match))
{
throw new Exception("Path " + path + " not found.");
}
}
FileRecord record = new FileRecord(FileRecord.GetRecordBytes(volume, index), volume);
indexEntryList.Clear();
if (record.Directory)
{
foreach (Attr attr in record.Attribute)
{
if (attr.Name == Attr.ATTR_TYPE.INDEX_ROOT)
{
try
{
foreach (IndexEntry entry in (attr as IndexRoot).Entries)
{
if (entry.Entry.Namespace != 0x02)
{
StringBuilder sb = new StringBuilder();
sb.Append(path.TrimEnd('\\'));
sb.Append("\\");
sb.Append(entry.Filename);
entry.FullName = sb.ToString();
indexEntryList.Add(entry);
}
}
}
catch
{
return null;
}
}
else if (attr.Name == Attr.ATTR_TYPE.INDEX_ALLOCATION)
{
// Get INDEX_ALLOCATION bytes
IndexAllocation IA = new IndexAllocation(attr as NonResident, volume);
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
foreach (IndexEntry entry in IA.Entries)
{
if (entry.Entry.Namespace != 0x02)
{
StringBuilder sb = new StringBuilder();
sb.Append(path.TrimEnd('\\'));
sb.Append("\\");
sb.Append(entry.Filename);
entry.FullName = sb.ToString();
indexEntryList.Add(entry);
}
}
}
}
}
else
{
IndexEntry[] indexArray = new IndexEntry[1];
indexArray[0] = new IndexEntry(record);
return indexArray;
}
}
return indexEntryList.ToArray();
}
internal IndexRoot(ResidentHeader header, byte[] attrBytes, string attrName)
{
#region ResidentHeader
// Get ResidentHeader (includes Common Header)
Name = (ATTR_TYPE)header.commonHeader.ATTRType;
NameString = attrName;
NonResident = header.commonHeader.NonResident;
AttributeId = header.commonHeader.Id;
#endregion ResidentHeader
#region IndexRoot
// IndexRoot
AttributeType = (ATTR_TYPE)BitConverter.ToUInt32(attrBytes, 0x00);
CollationSortingRule = BitConverter.ToUInt32(attrBytes, 0x04);
IndexSize = BitConverter.ToUInt32(attrBytes, 0x08);
ClustersPerIndexRecord = attrBytes[0x0C];
#endregion IndexRoot
#region IndexHeader
// IndexHeader
StartOffset = (BitConverter.ToUInt32(attrBytes, 0x10) + 0x10); // Add 0x10 bytes to start offset to account for its offset
TotalSize = BitConverter.ToUInt32(attrBytes, 0x14);
AllocatedSize = BitConverter.ToUInt32(attrBytes, 0x18);
Flags = ((INDEX_ROOT_FLAGS)BitConverter.ToUInt32(attrBytes, 0x1C));
#endregion IndexHeader
#region IndexEntryArray
if(TotalSize > StartOffset){
// IndexEntry[]
byte[] EntryBytes = NativeMethods.GetSubArray(attrBytes, StartOffset, TotalSize - StartOffset);
// Iterate through IndexEntry object
int indexEntryOffset = 0;
if (AttributeType == ATTR_TYPE.FILE_NAME)
{
// Instantiate empty IndexEntry List
List<IndexEntry> entryList = new List<IndexEntry>();
while (indexEntryOffset < (EntryBytes.Length - 0x10))
{
// Creat byte array representing IndexEntry Object
int indexEntrySizeOffset = indexEntryOffset + 0x08;
// Instantiate an IndexEntry Object
IndexEntry indexEntry = new IndexEntry(NativeMethods.GetSubArray(EntryBytes, (uint)indexEntryOffset, (uint)BitConverter.ToUInt16(EntryBytes, indexEntrySizeOffset)));
// Add IndexEntry Object to FileName List
entryList.Add(indexEntry);
// Increment indexEntryOffset
indexEntryOffset += indexEntry.Size;
}
Entries = entryList.ToArray();
}
}
#endregion IndexEntryArray
}
