public uint[] GetBlocksOccupied()
{
List <uint> Blocks = new List <uint>();
Streams.Reader r = Parent.Drive.Reader();
Blocks.Add(Parent.StartingCluster);
byte[] Buffer = new byte[0x1000];
int buffersize = 0x1000;
long lastoffset = 0;
for (int i = 0; i < Blocks.Count; i++)
{
r.BaseStream.Position = VariousFunctions.BlockToFATOffset(Blocks[i], Parent).DownToNearestCluster(0x1000);
// We use this so that we aren't reading the same buffer
// a zillion times
if (r.BaseStream.Position != lastoffset)
{
lastoffset = r.BaseStream.Position;
Buffer = r.ReadBytes(buffersize);
}
Streams.Reader r1 = new ParrotLibs.Streams.Reader(new System.IO.MemoryStream(Buffer));
int OffsetInBuffer = (int)(VariousFunctions.BlockToFATOffset(Blocks[i], Parent) - VariousFunctions.BlockToFATOffset(Blocks[i], Parent).DownToNearestCluster(0x1000));
r1.BaseStream.Position = OffsetInBuffer;
switch (Parent.PartitionInfo.EntrySize)
{
case 2:
ushort Value = r1.ReadUInt16();
if (Value != 0xFFFF && Value != 0xFFF8)
{
if (Value == 0)
{
EntryData ed = Parent.EntryData;
ed.NameSize = 0xE5;
CreateNewEntry(ed);
if (Blocks.Count > 0)
{
ClearFATChain(Blocks.ToArray());
}
throw new Exception(string.Format("Bad FAT chain in file or folder {0}\r\nEntry Offset: 0x{1}\r\nLast block in FAT: 0x{2}\r\nEntry marked as deleted to avoid further errors! Please reload this device", Parent.FullPath, Parent.EntryOffset.ToString("X"), Blocks.Last().ToString("X")));
}
Blocks.Add(Value);
}
break;
case 4:
uint Value2 = r1.ReadUInt32();
if (Value2 != 0xFFFFFFFF && Value2 != 0xFFFFFFF8)
{
if (Value2 == 0)
{
EntryData ed = Parent.EntryData;
ed.NameSize = 0xE5;
CreateNewEntry(ed);
if (Blocks.Count > 0)
{
ClearFATChain(Blocks.ToArray());
}
throw new Exception(string.Format("Bad FAT chain in file or folder {0}\r\nEntry Offset: 0x{1}\r\nLast block in FAT: 0x{2}\r\nEntry marked as deleted to avoid further errors! Please reload this device", Parent.FullPath, Parent.EntryOffset.ToString("X"), Blocks.Last().ToString("X")));
}
Blocks.Add(Value2);
}
break;
}
r1.Close();
}
return(Blocks.ToArray());
}
public EntryData[] EntryDataFromBlock(uint Block)
{
bool Break = false;
List <EntryData> eList = new List <EntryData>();
// Get our binary reader
Streams.Reader r1 = Parent.Drive.Reader();
r1.BaseStream.Position = VariousFunctions.GetBlockOffset(Block, Parent);
/* Parent.PartitionInfo.Clusters / 0x40 / 0x8 because if each
* entry is 0x40 in length and the cluster is filled to the
* max with cluster entries, then we can do division to get
* the number of entries that would be in that cluster
* the 0x8 part is because on drives we have to read in intervals
* of 0x200 right? So if Parent.PartitionInfo.Clusters / 0x40 = 0x100,
* then that means that there are 0x100 entries per cluster...
* divide that by 8 (the number of clusters within a 0x200 interval) and
* that's how many shits we have to go forward */
for (int j = 0; j < Parent.PartitionInfo.ClusterSize / 0x1000; j++)
{
// Increment our position
// Open another reader using a memory stream
long r1Position = r1.BaseStream.Position;
Streams.Reader r = new ParrotLibs.Streams.Reader(new System.IO.MemoryStream(r1.ReadBytes(0x1000)));
for (int k = 0; k < (0x1000 / 0x40); k++)
{
// Check to see if we've passed the last entry...
uint val = r.ReadUInt32();
if (val == 0x0 || val == 0xFFFFFFFF)
{
Break = true;
break;
}
// Go back four bytes because we just checked the next four...
r.BaseStream.Position -= 4;
long StartOffset = r.BaseStream.Position;
EntryData e = new EntryData();
e.EntryOffset = r.BaseStream.Position + r1Position;
e.NameSize = r.ReadByte();
e.Flags = r.ReadByte();
/* Because some f*****g smart guy decided to put the
* deleted flag in the name size field, we have to check
* if it's deleted or not...*/
if (e.NameSize == 0xE5)
{
// Fuckers
e.Name = Encoding.ASCII.GetString(r.ReadBytes(0x2A));
}
else
{
e.Name = Encoding.ASCII.GetString(r.ReadBytes(e.NameSize));
}
r.BaseStream.Position = StartOffset + 0x2C;
e.StartingCluster = r.ReadUInt32();
e.Size = r.ReadUInt32();
e.CreationDate = r.ReadUInt16();
e.CreationTime = r.ReadUInt16();
e.AccessDate = r.ReadUInt16();
e.AccessTime = r.ReadUInt16();
e.ModifiedDate = r.ReadUInt16();
e.ModifiedTime = r.ReadUInt16();
eList.Add(e);
}
r.Close();
if (Break)
{
break;
}
}
return(eList.ToArray());
}