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();
}
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();
}
