public void ClearFATChain(uint[] Chain)
{
Streams.Reader r = Parent.Drive.Reader();
Streams.Writer w = new CLKsFATXLib.Streams.Writer(r.BaseStream);
long buffersize = 0x1000;
long lastoffset = 0;//VariousFunctions.BlockToFATOffset(Chain[0], Parent).DownToNearestCluster(buffersize);
byte[] Buffer = new byte[buffersize];
for (int i = 0; i < Chain.Length; i++)
{
// Read the chain buffer
if (lastoffset != VariousFunctions.BlockToFATOffset(Chain[i], Parent).DownToNearestCluster(0x1000))
{
if (i != 0)
{
w.BaseStream.Position = lastoffset;
w.Write(Buffer);
}
lastoffset = VariousFunctions.BlockToFATOffset(Chain[i], Parent).DownToNearestCluster(0x1000);
r.BaseStream.Position = lastoffset;
Buffer = r.ReadBytes((int)buffersize);
}
// Write the chain
Streams.Writer mem = new CLKsFATXLib.Streams.Writer(new System.IO.MemoryStream(Buffer));
mem.BaseStream.Position = VariousFunctions.BlockToFATOffset(Chain[i], Parent) - VariousFunctions.BlockToFATOffset(Chain[i], Parent).DownToNearestCluster(0x1000);
byte[] writing = new byte[0];
switch (Parent.PartitionInfo.EntrySize)
{
case 2:
writing = BitConverter.GetBytes((ushort)0);
break;
case 4:
writing = BitConverter.GetBytes(0);
break;
}
mem.Write(writing);
mem.Close();
if (i == Chain.Length - 1)
{
w.BaseStream.Position = lastoffset;
w.Write(Buffer);
}
}
}
/* AUTOMATICALLY CREATES SHIT */
public EntryData GetNewEntry(Folder Destination, uint Size, Geometry.Flags[] Flags, string EntryName)
{
if (!VariousFunctions.CheckFileName(EntryName))
{
throw new ArgumentException("Invalid name: \"" + EntryName + "\"", "EntryName");
}
EntryData newEntryData = new EntryData();
newEntryData.EntryOffset = GetNewEntryOffset(Destination);
ushort Date = VariousFunctions.DateTimeToFATShort(DateTime.Now, true);
ushort Time = VariousFunctions.DateTimeToFATShort(DateTime.Now, false);
newEntryData.CreationDate = Date;
newEntryData.CreationTime = Time;
newEntryData.ModifiedDate = Date;
newEntryData.ModifiedTime = Time;
newEntryData.AccessDate = Date;
newEntryData.AccessTime = Time;
if (Flags.Length != 0)
{
newEntryData.Flags = VariousFunctions.FlagsToByte(Flags);
}
else
{
newEntryData.Flags = 0;
}
newEntryData.Size = Size;
newEntryData.Name = EntryName;
newEntryData.NameSize = (byte)EntryName.Length;
if ((Size == 0 && Flags.Contains(Geometry.Flags.Directory)) || (Size != 0 && Flags.Length == 0))
{
newEntryData.StartingCluster = Destination.Drive.GetFreeBlocks(Destination, 1, 0, 0, false)[0];
}
else
{
newEntryData.StartingCluster = 0;
}
WriteFATChain(new uint[] { newEntryData.StartingCluster });
CreateNewEntry(newEntryData);
return(newEntryData);
}
public long GetNewEntryOffset(Folder Destination)
{
// Go to the last block since we want to speed things up and not have to go
// through all of them
EntryData[] Entries = EntryDataFromBlock(Destination.BlocksOccupied[Destination.BlocksOccupied.Length - 1]);
if (Entries.Length == 0)
{
return(Destination.StartingOffset);
}
// If there isn't the maximum amount of entries for a cluster...
if (Entries.Length < Destination.PartitionInfo.ClusterSize / 0x40)
{
foreach (EntryData e in Entries)
{
if (e.NameSize == 0xE5)
{
return(e.EntryOffset);
}
}
return(Entries[Entries.Length - 1].EntryOffset + 0x40);
}
// Max amount of entries, let's add another cluster to our parent...
else
{
uint[] NewBlocks = new uint[Destination.BlocksOccupied.Length + 1];
Array.Copy(Destination.BlocksOccupied, NewBlocks, Destination.BlocksOccupied.Length);
NewBlocks[NewBlocks.Length - 1] = Destination.Drive.GetFreeBlocks((Folder)Destination, 1, 0, 0, false)[0];
byte[] FF = new byte[Destination.PartitionInfo.ClusterSize];
for (int i = 0; i < FF.Length; i++)
{
FF[i] = 0xFF;
}
Streams.Writer w = Destination.Drive.Writer();
w.BaseStream.Position = VariousFunctions.BlockToFATOffset(NewBlocks[NewBlocks.Length - 1], Destination);
w.Write(FF);
Destination.BlocksOccupied = NewBlocks;
return(VariousFunctions.BlockToFATOffset(NewBlocks[NewBlocks.Length - 1], Destination));
}
}
/// <summary>
/// Creates a stream to the current drive
/// </summary>
/// <returns>Stream for the current drive</returns>
public System.IO.Stream Stream()
{
// Else, try closing the stream, then re-create it, and return it
if (thisStream == null || IsClosed)
{
switch (DriveType)
{
case DriveType.Backup:
thisStream = new System.IO.FileStream(FilePath, System.IO.FileMode.Open);
break;
case DriveType.HardDisk:
DeviceHandle = VariousFunctions.CreateHandle(DeviceIndex);
thisStream = new System.IO.FileStream(DeviceHandle, System.IO.FileAccess.ReadWrite);
break;
case DriveType.USB:
thisStream = new Streams.USBStream(USBPaths, System.IO.FileMode.Open);
break;
}
}
return(thisStream);
}
public DateTime PartitionTimeStamp(Structs.PartitionInfo PI)
{
return(VariousFunctions.DateTimeFromFATInt((ushort)((PI.ID & ~0xFFFF) >> 8), (ushort)PI.ID));
}
/// <summary>
/// Returns an array of free blocks based off of the number of blocks needed
/// </summary>
public uint[] GetFreeBlocks(Folder Partition, int blocksNeeded, uint StartBlock, long end, bool SecondLoop)
{
int Clustersize = 0x10000;
uint Block = StartBlock;
if (end == 0)
{
end = Partition.PartitionInfo.FATOffset + Partition.PartitionInfo.FATSize;
}
List <uint> BlockList = new List <uint>();
// Create our reader for the drive
Streams.Reader br = Reader();
// Create our reader for the memory stream
Streams.Reader mr = null;
for (long i = VariousFunctions.DownToNearest200(VariousFunctions.BlockToFATOffset(StartBlock, Partition)); i < end; i += Clustersize)
{
//Set our position to i
br.BaseStream.Position = i;
byte[] buffer = new byte[0];
if ((end - i) < Clustersize)
{
buffer = VariousFunctions.ReadBytes(ref br, end - i);
}
else
{
//Read our buffer
buffer = br.ReadBytes(Clustersize);
}
try
{
mr.Close();
}
catch { }
mr = new Streams.Reader(new System.IO.MemoryStream(buffer));
//Re-open our binary reader using the buffer/memory stream
for (int j = 0; j < buffer.Length; j += (int)Partition.PartitionInfo.EntrySize, Block += (uint)Partition.PartitionInfo.EntrySize)
{
mr.BaseStream.Position = j;
//If we've gotten all of our requested blocks...
if (BlockList.Count == blocksNeeded)
{
//Close our reader -> break the loop
mr.Close();
break;
}
//Read the next block entry
byte[] reading = mr.ReadBytes((int)Partition.PartitionInfo.EntrySize);
//For each byte in our reading
for (int k = 0; k < reading.Length; k++)
{
//If the byte isn't null (if the block isn't open)
if (reading[k] != 0x00)
{
//Break
break;
}
//If we've reached the end of the array, and the last byte
//is 0x00, then the block is free
if (k == reading.Length - 1 && reading[k] == 0x00)
{
//Do some maths to get the block numbah
long fOff = Partition.PartitionInfo.FATOffset;
long blockPosition = (long)i + j;
uint block = (uint)(blockPosition - fOff) / (uint)Partition.PartitionInfo.EntrySize;
BlockList.Add(block);
}
}
}
//We're putting in one last check so that we don't loop more than we need to
if (BlockList.Count == blocksNeeded)
{
break;
}
}
//If we found the required amount of free blocks - return our list
if (BlockList.Count == blocksNeeded)
{
return(BlockList.ToArray());
}
//If we didn't find the amount of blocks required, but we started from a
//block other than the first one...
if (BlockList.Count < blocksNeeded && SecondLoop == false)
{
BlockList.AddRange(GetFreeBlocks(Partition, blocksNeeded - BlockList.Count, 1, VariousFunctions.DownToNearest200(VariousFunctions.BlockToFATOffset(StartBlock, Partition)), true));
return(BlockList.ToArray());
}
//We didn't find the amount of free blocks required, meaning we're ref of
//disk space
if (BlockList.Count != blocksNeeded)
{
throw new Exception("Out of Xbox 360 hard disk space");
}
return(BlockList.ToArray());
}
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 CLKsFATXLib.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 CLKsFATXLib.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());
}
//uint dicks(ref uint r3, ref uint r4, ref uint r6, ref uint r7, ref uint r8, ref uint r9, ref uint r10)
//{
//}
public ulong GetFreeSpace()
{
// Our return
ulong Return = 0;
ulong ClusterSize = (ulong)this.ClusterSize();
// Get our position
long positionya = FATOffset;
// Get our end point
long toBeLessThan = FATOffset + RealFATSize();
// Get our IO
Streams.Reader io = FATXDrive.Reader();
// Set the position
io.BaseStream.Position = positionya;
// Start reading!
for (long dick = io.BaseStream.Position; dick < toBeLessThan; dick += 0x200)
{
bool BreakAndShit = false;
// Set the position
io.BaseStream.Position = dick;
// Read our buffer
byte[] Buffer = null;
if ((dick - FATOffset).DownToNearest200() == (toBeLessThan - FATOffset).DownToNearest200())
{
byte[] Temp = io.ReadBytes(0x200);
Buffer = new byte[(toBeLessThan - FATOffset) - (dick - FATOffset).DownToNearest200()];
Array.Copy(Temp, 0, Buffer, 0, Buffer.Length);
}
else
{
Buffer = io.ReadBytes(0x200);
}
// Length to loop for (used for the end so we can read ONLY usable partitions)
long Length = Buffer.Length;
if (dick == VariousFunctions.DownToNearest200(toBeLessThan))
{
Length = toBeLessThan - VariousFunctions.DownToNearest200(toBeLessThan);
BreakAndShit = true;
}
// Check the values
Streams.Reader ioya = new Streams.Reader(new System.IO.MemoryStream(Buffer));
for (int i = 0; i < Length; i += EntrySize)
{
// This size will be off by a few megabytes, no big deal in my opinion
if (EntrySize == 2)
{
ushort Value = ioya.ReadUInt16();
if (Value == 0)
{
Return += ClusterSize;
}
}
else
{
if (ioya.ReadUInt32() == 0)
{
Return += ClusterSize;
}
}
}
ioya.Close();
if (BreakAndShit)
{
break;
}
}
return(Return);
}
/// <summary>
/// TOTAL size (includes padding) of the File Allocation Table (in bytes)
/// FOR REAL SIZE, CALL TO RealFATSize();
/// </summary>
public long FATSize()
{
if (fatsize != 0)
{
if (!SizeChecked)
{
Streams.Reader r = FATXDrive.Reader();
r.BaseStream.Position = Partition.Offset + fatsize + 0x1000;
while (true)
{
if (r.ReadUInt32() == 0x0)
{
fatsize += 0x1000;
r.BaseStream.Position += 0x1000 - 0x4;
}
else
{
break;
}
}
SizeChecked = true;
}
return(fatsize);
}
if (Partition.Offset == (long)Geometry.HDDOffsets.System_Extended)
{
return(0x5000);
}
else if (Partition.Offset == (long)Geometry.HDDOffsets.System_Cache)
{
return(0x7000);
}
#region old
//long size = 0;
//if (Partition.Offset == 0x20000000 && FATXDrive.IsUSB)
//{
// System.IO.FileInfo fi = new System.IO.FileInfo(FATXDrive.DumpPath + "\\Data0001");
// size = fi.Length - 0x1000;
// //Return the size.
// return size;
//}
//else
//{
// //This gets the size
// size = ((PartitionSize() / ClusterSize()) * EntrySize);
// //We need to round up to the nearest 0x1000 byte boundary.
// long sizeToAdd = (0x1000 - (size % 0x1000));
// if (!FATXDrive.IsUSB)
// {
// size += sizeToAdd;
// }
// //Return the size.
// return size;
//}
#endregion
//Code that rounds up to nearest cluster...
long size = 0;
#region shit
//if (Partition.Offset == 0x20000000 && FATXDrive.IsUSB)
//{
// System.IO.FileInfo fi = new System.IO.FileInfo(FATXDrive.DumpPath + "\\Data0001");
// size = fi.Length - 0x1000;
// //Ghetto
// Streams.Reader ir = FATXDrive.Reader();
// //Return the size.
// return size;
//}
//else
//{
#endregion
//This gets the size
size = (((PartitionSize() / ClusterSize())) * EntrySize);
//We need to round up to the nearest blabhlabhalkhdflkasdf byte boundary.
size = VariousFunctions.UpToNearestCluster(size + 0x1000, ClusterSize() / EntrySize) - 0x1000;
//long sizeToAdd = (0x1000 - (size % 0x1000));
//size += sizeToAdd;
//Return the size.
return(size);
//uint r24 = 0, r3, r6, r23, r10, r11, r27, r22, r25, r26, r28, r29, r30, r31;
//if (Partition.Size == 0)
//{
//}
//else
//{
// r11 = r27 & 0xFF;
// if (r11 == 2)
// {
// r11 = r22;
// r10 = r11 + r29;
// r11--;
// r10--;
// r29 = r10 & (~r11);
// r30 = r29;
// }
// else
// {
// // break here
// }
// r10 = 1;
// r3 = dicks(ref r28, ref r26, ref r27, ref r25, ref r31, ref r24, ref r10);
//}
}
// Do not feel like recoding this function.
public void CreateNewEntry(EntryData Edata)
{
Streams.Reader br = Parent.Drive.Reader();
//Set our position so that we can read the entry location
br.BaseStream.Position = VariousFunctions.DownToNearest200(Edata.EntryOffset);
byte[] buffer = br.ReadBytes(0x200);
//Create our binary writer
Streams.Writer bw = new Streams.Writer(new System.IO.MemoryStream(buffer));
//Set our position to where the entry is
long EntryOffset = Edata.EntryOffset - VariousFunctions.DownToNearest200(Edata.EntryOffset);
bw.BaseStream.Position = EntryOffset;
//Write our entry
bw.Write(Edata.NameSize);
bw.Write(Edata.Flags);
bw.Write(Encoding.ASCII.GetBytes(Edata.Name));
if (Edata.NameSize != 0xE5)
{
int FFLength = 0x2A - Edata.NameSize;
byte[] FF = new byte[FFLength];
for (int i = 0; i < FFLength; i++)
{
FF[i] = 0xFF;
}
bw.Write(FF);
}
else
{
bw.BaseStream.Position += 0x2A - Edata.Name.Length;
}
//Right here, we need to make everything a byte array, as it feels like writing
//everything in little endian for some reason...
byte[] StartingCluster = BitConverter.GetBytes(Edata.StartingCluster);
Array.Reverse(StartingCluster);
bw.Write(StartingCluster);
byte[] Size = BitConverter.GetBytes(Edata.Size);
Array.Reverse(Size);
bw.Write(Size);
//Write ref the creation date/time 3 times
byte[] CreationDate = BitConverter.GetBytes(Edata.CreationDate);
byte[] CreationTime = BitConverter.GetBytes(Edata.CreationTime);
byte[] AccessDate = BitConverter.GetBytes(Edata.AccessDate);
byte[] AccessTime = BitConverter.GetBytes(Edata.AccessTime);
byte[] ModifiedDate = BitConverter.GetBytes(Edata.ModifiedDate);
byte[] ModifiedTime = BitConverter.GetBytes(Edata.ModifiedTime);
Array.Reverse(CreationDate);
Array.Reverse(CreationTime);
Array.Reverse(AccessDate);
Array.Reverse(AccessTime);
Array.Reverse(ModifiedDate);
Array.Reverse(ModifiedTime);
bw.Write(CreationDate);
bw.Write(CreationTime);
bw.Write(AccessDate);
bw.Write(AccessTime);
bw.Write(ModifiedDate);
bw.Write(ModifiedTime);
//Close our writer
bw.Close();
//Get our IO
bw = Parent.Drive.Writer();
bw.BaseStream.Position = VariousFunctions.DownToNearest200(Edata.EntryOffset);
//Write ref our buffer
bw.Write(buffer);
}
