internal FileRecord(byte[] recordBytes, string volume, bool fast)
{
VolumePath = volume;
Signature = Encoding.ASCII.GetString(recordBytes, 0x00, 0x04);
if (Signature == "FILE")
{
// Parse File Record Header
OffsetOfUS = BitConverter.ToUInt16(recordBytes, 4);
SizeOfUS = BitConverter.ToUInt16(recordBytes, 6);
UpdateSequenceNumber = BitConverter.ToUInt16(recordBytes, OffsetOfUS);
#region UpdateSequenceArray
UpdateSequenceArray = new byte[(2 * SizeOfUS) - 2];
Array.Copy(recordBytes, (OffsetOfUS + 2), UpdateSequenceArray, 0, UpdateSequenceArray.Length);
#endregion UpdateSequenceArray
LogFileSequenceNumber = BitConverter.ToUInt64(recordBytes, 8);
SequenceNumber = BitConverter.ToUInt16(recordBytes, 16);
Hardlinks = BitConverter.ToUInt16(recordBytes, 18);
OffsetOfAttribute = BitConverter.ToUInt16(recordBytes, 20);
Flags = BitConverter.ToUInt16(recordBytes, 22);
#region Deleted
if ((Flags & (ushort)FILE_RECORD_FLAG.INUSE) == (ushort)FILE_RECORD_FLAG.INUSE)
{
Deleted = false;
}
else
{
Deleted = true;
}
#endregion Deleted
#region Directory
if ((Flags & (ushort)FILE_RECORD_FLAG.DIR) == (ushort)FILE_RECORD_FLAG.DIR)
{
Directory = true;
}
else
{
Directory = false;
}
#endregion Directory
RealSize = BitConverter.ToUInt32(recordBytes, 24);
AllocatedSize = BitConverter.ToUInt32(recordBytes, 28);
ReferenceToBase = BitConverter.ToUInt64(recordBytes, 32);
NextAttrId = BitConverter.ToUInt16(recordBytes, 40);
RecordNumber = BitConverter.ToUInt32(recordBytes, 44);
#region Attribute
// Create a byte array representing the attribute array
byte[] attrArrayBytes = new byte[RealSize - OffsetOfAttribute];
Array.Copy(recordBytes, OffsetOfAttribute, attrArrayBytes, 0, attrArrayBytes.Length);
// Instantiate an empty list of Attr Objects (We don't know how many attributes the record contains)
List <Attr> AttributeList = new List <Attr>();
// Initialize the offset value to 0
int currentOffset = 0;
if (currentOffset < (attrArrayBytes.Length - 8))
{
do
{
// Get attribute size
int attrSizeOffset = currentOffset + 4;
int attrSize = BitConverter.ToInt32(attrArrayBytes, attrSizeOffset);
// Create new byte array with just current attribute's bytes
byte[] currentAttrBytes = new byte[attrSize];
Array.Copy(attrArrayBytes, currentOffset, currentAttrBytes, 0, currentAttrBytes.Length);
// Increment currentOffset
currentOffset += attrSize;
Attr attr = AttributeFactory.Get(currentAttrBytes, volume);
if (attr != null)
{
if (attr.Name == Attr.ATTR_TYPE.STANDARD_INFORMATION)
{
StandardInformation stdInfo = attr as StandardInformation;
ModifiedTime = stdInfo.ModifiedTime;
AccessedTime = stdInfo.AccessedTime;
ChangedTime = stdInfo.ChangedTime;
BornTime = stdInfo.BornTime;
Permission = stdInfo.Permission;
}
else if (attr.Name == Attr.ATTR_TYPE.FILE_NAME)
{
FileName fN = attr as FileName;
if (!(fN.Namespace == 2))
{
Name = fN.Filename;
ParentSequenceNumber = fN.ParentSequenceNumber;
ParentRecordNumber = fN.ParentRecordNumber;
FNModifiedTime = fN.ModifiedTime;
FNAccessedTime = fN.AccessedTime;
FNChangedTime = fN.ChangedTime;
FNBornTime = fN.BornTime;
}
}
AttributeList.Add(attr);
}
} while (currentOffset < (attrArrayBytes.Length - 8));
}
Attribute = AttributeList.ToArray();
#endregion Attribute
#region FullName
if (fast)
{
FullName = Name;
}
else
{
StringBuilder sb = new StringBuilder();
if (RecordNumber == 0)
{
sb.Append(volume.Split('\\')[3]);
sb.Append('\\');
sb.Append(Name);
FullName = sb.ToString();
}
else if (RecordNumber == 5)
{
FullName = volume.Split('\\')[3];
}
else
{
FileRecord parent = new FileRecord(FileRecord.GetRecordBytes(volume, (int)ParentRecordNumber), volume, false);
if (parent.SequenceNumber == this.ParentSequenceNumber)
{
sb.Append(parent.FullName);
}
else
{
sb.Append(@"$OrphanFiles");
}
if (Name != null)
{
sb.Append('\\');
FullName = sb.Append(Name).ToString();
}
else
{
FullName = sb.ToString();
}
}
}
#endregion FullName
}
}
private FileRecord(ref FileRecord[] array, byte[] mftBytes, byte[] recordBytes, int bytesPerFileRecord, string volume)
{
VolumePath = volume;
Signature = Encoding.ASCII.GetString(recordBytes, 0x00, 0x04);
if (Signature == "FILE")
{
// Parse File Record Header
OffsetOfUS = BitConverter.ToUInt16(recordBytes, 4);
SizeOfUS = BitConverter.ToUInt16(recordBytes, 6);
UpdateSequenceNumber = BitConverter.ToUInt16(recordBytes, OffsetOfUS);
#region UpdateSequenceArray
UpdateSequenceArray = new byte[(2 * SizeOfUS) - 2];
Array.Copy(recordBytes, (OffsetOfUS + 2), UpdateSequenceArray, 0, UpdateSequenceArray.Length);
#endregion UpdateSequenceArray
LogFileSequenceNumber = BitConverter.ToUInt64(recordBytes, 8);
SequenceNumber = BitConverter.ToUInt16(recordBytes, 16);
Hardlinks = BitConverter.ToUInt16(recordBytes, 18);
OffsetOfAttribute = BitConverter.ToUInt16(recordBytes, 20);
Flags = BitConverter.ToUInt16(recordBytes, 22);
#region Deleted
if ((Flags & (ushort)FILE_RECORD_FLAG.INUSE) == (ushort)FILE_RECORD_FLAG.INUSE)
{
Deleted = false;
}
else
{
Deleted = true;
}
#endregion Deleted
#region Directory
if ((Flags & (ushort)FILE_RECORD_FLAG.DIR) == (ushort)FILE_RECORD_FLAG.DIR)
{
Directory = true;
}
else
{
Directory = false;
}
#endregion Directory
RealSize = BitConverter.ToUInt32(recordBytes, 24);
AllocatedSize = BitConverter.ToUInt32(recordBytes, 28);
ReferenceToBase = BitConverter.ToUInt64(recordBytes, 32);
NextAttrId = BitConverter.ToUInt16(recordBytes, 40);
RecordNumber = BitConverter.ToUInt32(recordBytes, 44);
#region Attribute
// Create a byte array representing the attribute array
byte[] attrArrayBytes = new byte[RealSize - OffsetOfAttribute];
ApplyFixup(ref recordBytes);
Array.Copy(recordBytes, OffsetOfAttribute, attrArrayBytes, 0, attrArrayBytes.Length);
// Instantiate an empty list of Attr Objects (We don't know how many attributes the record contains)
List <Attr> AttributeList = new List <Attr>();
// Initialize the offset value to 0
int currentOffset = 0;
if (currentOffset < (attrArrayBytes.Length - 8))
{
do
{
// Get attribute size
int attrSizeOffset = currentOffset + 4;
int attrSize = BitConverter.ToInt32(attrArrayBytes, attrSizeOffset);
// Create new byte array with just current attribute's bytes
byte[] currentAttrBytes = new byte[attrSize];
Array.Copy(attrArrayBytes, currentOffset, currentAttrBytes, 0, currentAttrBytes.Length);
// Increment currentOffset
currentOffset += attrSize;
Attr attr = AttributeFactory.Get(currentAttrBytes, volume);
if (attr != null)
{
if (attr.Name == Attr.ATTR_TYPE.STANDARD_INFORMATION)
{
StandardInformation stdInfo = attr as StandardInformation;
ModifiedTime = stdInfo.ModifiedTime;
AccessedTime = stdInfo.AccessedTime;
ChangedTime = stdInfo.ChangedTime;
BornTime = stdInfo.BornTime;
Permission = stdInfo.Permission;
}
else if (attr.Name == Attr.ATTR_TYPE.FILE_NAME)
{
FileName fN = attr as FileName;
if (!(fN.Namespace == 2))
{
Name = fN.Filename;
ParentSequenceNumber = fN.ParentSequenceNumber;
ParentRecordNumber = fN.ParentRecordNumber;
FNModifiedTime = fN.ModifiedTime;
FNAccessedTime = fN.AccessedTime;
FNChangedTime = fN.ChangedTime;
FNBornTime = fN.BornTime;
}
}
AttributeList.Add(attr);
}
} while (currentOffset < (attrArrayBytes.Length - 8));
}
Attribute = AttributeList.ToArray();
#endregion Attribute
#region FullName
StringBuilder sb = new StringBuilder();
// Record 5 is the root of the drive
if (RecordNumber == 5)
{
sb.Append(volume.Split('\\')[3]);
}
else
{
// Derive Path by looking at ParentRecord's FullName
if (array[(int)ParentRecordNumber] != null)
{
if (ParentSequenceNumber == array[(int)ParentRecordNumber].SequenceNumber)
{
sb.Append(array[(int)ParentRecordNumber].FullName);
}
else
{
sb.Append(@"$OrphanFiles\");
}
}
// If record for Parent does not already exist then instantiate it and add it to the array
else
{
byte[] parentBytes = NativeMethods.GetSubArray(mftBytes, (uint)bytesPerFileRecord * (uint)ParentRecordNumber, (uint)bytesPerFileRecord);
array[(int)ParentRecordNumber] = new FileRecord(ref array, mftBytes, parentBytes, bytesPerFileRecord, volume);
if (ParentSequenceNumber == array[(int)ParentRecordNumber].SequenceNumber)
{
sb.Append(array[(int)ParentRecordNumber].FullName);
}
else
{
sb.Append(@"$OrphanFiles\");
}
}
// Add file name to end of path
sb.Append(Name);
}
// Add trailing \ to any file that is a directory
if (Directory)
{
sb.Append('\\');
}
// Figure out a way to have record 15 not have a name of $MFT...
FullName = sb.ToString();
#endregion FullName
}
}
