public static MainPacket Create(PacketHeader header, byte[] bytes, int index)
{
MainPacket tmpPacket = new MainPacket();
tmpPacket.header = header;
int offset = 0;
tmpPacket.blocksize = BitConverter.ToUInt64(bytes, index + offset);
offset += sizeof(UInt64);
tmpPacket.recoverablefilecount = BitConverter.ToUInt32(bytes, index + offset);
offset += sizeof(UInt32);
tmpPacket.totalfilecount = ((uint)header.length - ((uint)header.GetSize() + sizeof(UInt64) + sizeof(UInt32))) / (16 * sizeof(byte));
for (int i = 0; i < tmpPacket.totalfilecount; i++)
{
byte[] fileid = new byte[16];
Buffer.BlockCopy(bytes, index + offset, fileid, 0, fileid.Length * sizeof(byte));
offset += fileid.Length * sizeof(byte);
tmpPacket.fileids.Add(fileid);
}
System.Threading.Tasks.Task.Factory.StartNew((b) =>
{
//FastCRC32.FastCRC32 crc32 = new FastCRC32.FastCRC32((ulong)b);
FastCRC32.FastCRC32 crc32 = FastCRC32.FastCRC32.GetCRC32Instance((ulong)b);
}, tmpPacket.blocksize);
return tmpPacket;
}
public byte[] fileid = new byte[16]; // MD5hash of file_hash_16k, file_length, file_name
#endregion Fields
#region Methods
public static FileVerificationPacket Create(PacketHeader header, byte[] bytes, int index)
{
FileVerificationPacket tmpPacket = new FileVerificationPacket();
tmpPacket.header = header;
int offset = 0;
Buffer.BlockCopy(bytes, index + offset, tmpPacket.fileid, 0, tmpPacket.fileid.Length * sizeof(byte));
offset += tmpPacket.fileid.Length * sizeof(byte);
int nbEntries = ((int)header.length - header.GetSize() - (16 * sizeof(byte))) / FileVerificationEntry.GetSize();
tmpPacket.entries = new List<FileVerificationEntry>();
tmpPacket.blockcount = (ulong)((header.length - (ulong)tmpPacket.GetSize()) / (ulong)FileVerificationEntry.GetSize());
for (int i = 0; i < nbEntries; i++)
{
FileVerificationEntry entry = new FileVerificationEntry();
Buffer.BlockCopy(bytes, index + offset, entry.hash, 0, entry.hash.Length * sizeof(byte));
offset += entry.hash.Length * sizeof(byte);
entry.crc = BitConverter.ToUInt32(bytes, index + offset);
offset += sizeof(UInt32);
tmpPacket.entries.Add(entry);
}
return tmpPacket;
}
public string name; // Name of the file, padded with 1 to 3 zero bytes to reach
#endregion Fields
#region Methods
public static FileDescriptionPacket Create(PacketHeader header, byte[] bytes, int index)
{
FileDescriptionPacket tmpPacket = new FileDescriptionPacket();
tmpPacket.header = header;
int offset = 0;
Buffer.BlockCopy(bytes, index + offset, tmpPacket.fileid, 0, tmpPacket.fileid.Length * sizeof(byte));
offset += tmpPacket.fileid.Length * sizeof(byte);
Buffer.BlockCopy(bytes, index + offset, tmpPacket.hashfull, 0, tmpPacket.hashfull.Length * sizeof(byte));
offset += tmpPacket.hashfull.Length * sizeof(byte);
Buffer.BlockCopy(bytes, index + offset, tmpPacket.hash16k, 0, tmpPacket.hash16k.Length * sizeof(byte));
offset += tmpPacket.hash16k.Length * sizeof(byte);
tmpPacket.length = BitConverter.ToUInt64(bytes, index + offset);
offset += sizeof(UInt64);
// Name is specific to read since it's dependant of packet.length
int name_offset = index + offset;
int name_size = (int)header.length - header.GetSize() - tmpPacket.fileid.Length * sizeof(byte) - tmpPacket.hashfull.Length * sizeof(byte) - tmpPacket.hash16k.Length * sizeof(byte) - sizeof(UInt64);
byte[] name = new byte[name_size];
Buffer.BlockCopy(bytes, name_offset, name, 0, name_size);
tmpPacket.name = ToolKit.ByteArrayToString(name).TrimEnd('\0');
return tmpPacket;
}
public static FileVerificationPacket Create(PacketHeader header, byte[] bytes, int index)
{
FileVerificationPacket tmpPacket = new FileVerificationPacket();
tmpPacket.header = header;
int offset = 0;
Buffer.BlockCopy(bytes, index + offset, tmpPacket.fileid, 0, tmpPacket.fileid.Length * sizeof(byte));
offset += tmpPacket.fileid.Length * sizeof(byte);
int nbEntries = ((int)header.length - header.GetSize() - (16 * sizeof(byte))) / FileVerificationEntry.GetSize();
tmpPacket.entries = new List <FileVerificationEntry>();
tmpPacket.blockcount = (ulong)((header.length - (ulong)tmpPacket.GetSize()) / (ulong)FileVerificationEntry.GetSize());
for (int i = 0; i < nbEntries; i++)
{
FileVerificationEntry entry = new FileVerificationEntry();
Buffer.BlockCopy(bytes, index + offset, entry.hash, 0, entry.hash.Length * sizeof(byte));
offset += entry.hash.Length * sizeof(byte);
entry.crc = BitConverter.ToUInt32(bytes, index + offset);
offset += sizeof(UInt32);
tmpPacket.entries.Add(entry);
}
return(tmpPacket);
}
public static FileDescriptionPacket Create(PacketHeader header, byte[] bytes, int index)
{
FileDescriptionPacket tmpPacket = new FileDescriptionPacket();
tmpPacket.header = header;
int offset = 0;
Buffer.BlockCopy(bytes, index + offset, tmpPacket.fileid, 0, tmpPacket.fileid.Length * sizeof(byte));
offset += tmpPacket.fileid.Length * sizeof(byte);
Buffer.BlockCopy(bytes, index + offset, tmpPacket.hashfull, 0, tmpPacket.hashfull.Length * sizeof(byte));
offset += tmpPacket.hashfull.Length * sizeof(byte);
Buffer.BlockCopy(bytes, index + offset, tmpPacket.hash16k, 0, tmpPacket.hash16k.Length * sizeof(byte));
offset += tmpPacket.hash16k.Length * sizeof(byte);
tmpPacket.length = BitConverter.ToUInt64(bytes, index + offset);
offset += sizeof(UInt64);
// Name is specific to read since it's dependant of packet.length
int name_offset = index + offset;
int name_size = (int)header.length - header.GetSize() - tmpPacket.fileid.Length * sizeof(byte) - tmpPacket.hashfull.Length * sizeof(byte) - tmpPacket.hash16k.Length * sizeof(byte) - sizeof(UInt64);
byte[] name = new byte[name_size];
Buffer.BlockCopy(bytes, name_offset, name, 0, name_size);
tmpPacket.name = ToolKit.ByteArrayToString(name).TrimEnd('\0');
return(tmpPacket);
}
public static MainPacket Create(PacketHeader header, byte[] bytes, int index)
{
MainPacket tmpPacket = new MainPacket();
tmpPacket.header = header;
int offset = 0;
tmpPacket.blocksize = BitConverter.ToUInt64(bytes, index + offset);
offset += sizeof(UInt64);
tmpPacket.recoverablefilecount = BitConverter.ToUInt32(bytes, index + offset);
offset += sizeof(UInt32);
tmpPacket.totalfilecount = ((uint)header.length - ((uint)header.GetSize() + sizeof(UInt64) + sizeof(UInt32))) / (16 * sizeof(byte));
for (int i = 0; i < tmpPacket.totalfilecount; i++)
{
byte[] fileid = new byte[16];
Buffer.BlockCopy(bytes, index + offset, fileid, 0, fileid.Length * sizeof(byte));
offset += fileid.Length * sizeof(byte);
tmpPacket.fileids.Add(fileid);
}
System.Threading.Tasks.Task.Factory.StartNew((b) =>
{
//FastCRC32.FastCRC32 crc32 = new FastCRC32.FastCRC32((ulong)b);
FastCRC32.FastCRC32 crc32 = FastCRC32.FastCRC32.GetCRC32Instance((ulong)b);
}, tmpPacket.blocksize);
return(tmpPacket);
}
public static RecoveryPacket Create(PacketHeader header, byte[] bytes, int index, string filename, int file_offset)
{
RecoveryPacket tmpPacket = new RecoveryPacket();
tmpPacket.header = header;
int offset = 0;
tmpPacket.exponent = BitConverter.ToUInt32(bytes, index + offset);
offset += sizeof(UInt32);
tmpPacket.offset = index + offset + file_offset;
tmpPacket.length = (int)header.length - header.GetSize() - sizeof(UInt32);
tmpPacket.filename = filename;
tmpPacket.diskfile = new DiskFile();
tmpPacket.diskfile.Open(filename);
tmpPacket.datablock = new DataBlock();
// Set the data block to immediatly follow the header on disk
tmpPacket.datablock.SetLocation(tmpPacket.diskfile, (ulong)tmpPacket.offset);
tmpPacket.datablock.SetLength((ulong)tmpPacket.length);
return(tmpPacket);
}
public static CreatorPacket Create(PacketHeader header, byte[] bytes, int index)
{
CreatorPacket tmpPacket = new CreatorPacket();
tmpPacket.header = header;
int offset = 0;
// Name is specific to read since it's dependant of packet.length
int name_offset = index + offset;
int name_size = (int)header.length - header.GetSize();
byte[] name = new byte[name_size];
Buffer.BlockCopy(bytes, name_offset, name, 0, name_size);
tmpPacket.client = ToolKit.ByteArrayToString(name);
return tmpPacket;
}
public static CreatorPacket Create(PacketHeader header, byte[] bytes, int index)
{
CreatorPacket tmpPacket = new CreatorPacket();
tmpPacket.header = header;
int offset = 0;
// Name is specific to read since it's dependant of packet.length
int name_offset = index + offset;
int name_size = (int)header.length - header.GetSize();
byte[] name = new byte[name_size];
Buffer.BlockCopy(bytes, name_offset, name, 0, name_size);
tmpPacket.client = ToolKit.ByteArrayToString(name);
return(tmpPacket);
}
public static RecoveryPacket Create(PacketHeader header, byte[] bytes, int index, string filename, int file_offset)
{
RecoveryPacket tmpPacket = new RecoveryPacket();
tmpPacket.header = header;
int offset = 0;
tmpPacket.exponent = BitConverter.ToUInt32(bytes, index + offset);
offset += sizeof(UInt32);
tmpPacket.offset = index + offset + file_offset;
tmpPacket.length = (int)header.length - header.GetSize() - sizeof(UInt32);
tmpPacket.filename = filename;
tmpPacket.diskfile = new DiskFile();
tmpPacket.diskfile.Open(filename);
tmpPacket.datablock = new DataBlock();
// Set the data block to immediatly follow the header on disk
tmpPacket.datablock.SetLocation(tmpPacket.diskfile, (ulong)tmpPacket.offset);
tmpPacket.datablock.SetLength((ulong)tmpPacket.length);
return tmpPacket;
}
public int GetSize()
{
return(header.GetSize() + sizeof(UInt32));
}
