// версия размер(версия+подпись) подпись(версия+информация)
private async Task CheckVersion(byte[] data, IPEndPoint source)
{
string version;
byte[] signature = new byte[0];
byte[] last_data;
string file_size = string.Empty;
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(data, version_size);
version = BytesToOperation(temp.part1);
last_data = temp.part2;
temp = ByteArrayCut(last_data, size_size);
file_size = BytesToOperation(temp.part1);
signature = temp.part2;
window.WriteLine("Siganture: " + cryptography.HashToString(signature));
if (String.CompareOrdinal(version, info.version) > 0)
{
last_data = Encoding.UTF8.GetBytes(source.Address.ToString());
last_data = AddOperation("update|give", UDPServer.operation_size, last_data);
await server.Send(source, last_data);
await UpdateSelf(file_size, signature, source, version);
}
else
{
window.WriteLine("no updates");
}
}
// HEADER: 1|username (16)|private_key size in bytes| walletdata
public async Task MaketheWallet(string wallet_path, string username)
{
try
{
byte[] wallet = new byte[0];
string header;
string key;
TwoBytesArrays temp = new TwoBytesArrays();
key = RsaCryptoService.ToXmlString(true);
temp.part1 = Encoding.UTF8.GetBytes(key);
key = RsaCryptoService.ToXmlString(false);
temp.part2 = Encoding.UTF8.GetBytes(key);
wallet = ByteArrayJoin(temp);
header = "1|" + username + "|" + temp.part1.Length;
wallet = AddOperation(header, header_size, wallet);
wallet_path = wallet_path + @"\wallet";
int r = await filesystem.AddInfoToFileAsync(wallet_path, wallet, true);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
public static byte[] ByteArrayJoin(TwoBytesArrays data)
{
byte[] resultArray = new byte[data.part1.Length + data.part2.Length];
Array.Copy(data.part1, 0, resultArray, 0, data.part1.Length);
Array.Copy(data.part2, 0, resultArray, data.part1.Length, data.part2.Length);
return(resultArray);
}
public byte[] MakeTMessage(Transaction transaction, string private_key)
{
byte[] result_data = new byte[0];
try
{
byte[] body_data;
string header;
string tempstr = string.Empty;
string operations = string.Empty;
string key = private_key;
int info = 0;
TwoBytesArrays temp = new TwoBytesArrays();
byte[] additional_info = new byte[0];
info = transaction.information.Length;
operations = transaction.input.put
+ "|" + transaction.input.value
+ "|" + transaction.output.put
+ "|" + transaction.output.value
+ "|" + GetDate()
+ "|" + transaction.public_key;
temp.part1 = Encoding.UTF8.GetBytes(operations);
temp.part2 = ByteArrayFill(transaction.information, Transactions.size_info_in_transaction);
body_data = ByteArrayJoin(temp);
temp.part1 = body_data;
temp.part2 = cryptography.Sign(body_data, key);
body_data = ByteArrayJoin(temp);
//window.WriteLine("Body hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part1)));
//window.WriteLine("Signature hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
header = transaction.version + "|" + temp.part1.Length + "|" + info;
result_data = AddOperation(header, Transactions.size_header, body_data);
Transaction tmp = ParseTMessage(result_data);
//WriteToConsole(tmp);
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
return(result_data);
}
// версия+информация
private async Task UpdateSelf(string size_str, byte[] signature, IPEndPoint source, string new_version)
{
try
{
window.WriteLine("Client pending: " + size_str);
window.WriteLine("nv: " + new_version);
int size = Convert.ToInt32(size_str);
byte[] buffer = await filetransfering.TcpDataGet(source, size);
byte[] hash = cryptography.GetSHA256Hash(buffer);
window.WriteLine("Client got: " + buffer.Length + " bytes");
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(buffer, version_size);
string version = string.Empty;
version = BytesToOperation(temp.part1);
window.WriteLine("Version " + version + " ready");
window.WriteLine("Client: " + temp.part1.Length + " + " + temp.part2.Length + " = " + (temp.part1.Length + temp.part2.Length));
window.WriteLine("Siganture: " + cryptography.HashToString(signature));
window.WriteLine("Hash to check: " + cryptography.HashToString(hash));
// hash(version[15] + hash(row_data)[64]);
window.WriteLine("exe hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
if (cryptography.VerifySign(hash, signature, Information.admin_public_key))
{
window.WriteLine("Update to version: " + version + " started");
update_data = temp.part2;
window.WriteLine("Update to : " + update_data.Length);
window.ShowUpdateAvailable(version, update_data);
}
else
{
window.WriteLine("Wrong signature");
}
}
catch (Exception e)
{
window.WriteLine(e.ToString());
}
}
public string GetBlockName(byte[] block)
{
string result = string.Empty;
if (block != null)
{
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(block, Blocks.header_info_size);
int header_size = Convert.ToInt32(BytesToOperation(temp.part1));
temp = ByteArrayCut(temp.part2, header_size);
result = cryptography.HashToString(cryptography.GetSHA256Hash(temp.part1));
}
return(result);
}
public async Task <List <string> > OpentheWallet(string path)
{
List <string> result = new List <string>(0);
if (File.Exists(path))
{
string header = string.Empty;
byte[] keys;
TwoBytesArrays temp = new TwoBytesArrays();
List <string> sizes = new List <string>();
byte[] wallet = new byte[0];
wallet = await filesystem.GetFromFileAsync(path);
temp = ByteArrayCut(wallet, header_size);
header = BytesToOperation(temp.part1);
keys = temp.part2;
if (header[0] == '1')
{
//Console.WriteLine("Correct password");
sizes.AddRange(header.Split('|'));
}
temp = ByteArrayCut(temp.part2, Convert.ToInt32(sizes[2]));
private_key = BytesToOperation(temp.part1);
public_key = BytesToOperation(temp.part2);
/*
* Console.WriteLine(private_key);
* Console.WriteLine("===========================");
* Console.WriteLine(public_key);
*/
RsaCryptoService.FromXmlString(private_key);
RsaCryptoService.FromXmlString(public_key);
result.Add(sizes[1]);
result.Add(private_key);
result.Add(public_key);
}
return(result);
}
public async Task <int> Initialize(Cryptography main_cryptography, Blocks mine, FileSystem main_filesystem, UDPServer server, bool main_debug)
{
byte[] data;
try
{
cryptography = main_cryptography;
filesystem = main_filesystem;
debug = main_debug;
version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
self_location = System.Reflection.Assembly.GetExecutingAssembly().Location;
data = await filesystem.GetFromFileAsync(self_location);
self_size = data.Length;
exe_hash = cryptography.GetSHA256Hash(data);
TwoBytesArrays temp = new TwoBytesArrays();
temp.part1 = OperationToBytes(version, Updating.version_size);
temp.part2 = data;
data = ByteArrayJoin(temp);
signed_hash = cryptography.GetSHA256Hash(data);
block_version = Blocks.block_version;
await ActualizeSelfSignature();
filesystem_version = filesystem.FSConfig.version;
port = server.Port;
//window.WriteLine("class Information: initialized");
return(1);
}
catch (Exception e)
{
Debug.WriteLine("class Information: FAILED");
Debug.WriteLine(e.ToString());
return(0);
}
}
public async Task <string> BlockChainCheckLeft(byte[] block)
{
string result = string.Empty;
TwoBytesArrays temp = new TwoBytesArrays();
Block new_block = new Block();
string path = filesystem.FSConfig.db_blocks_path;
string str;
byte[] data = new byte[0];
string real_name = GetBlockName(block);
if (CheckBlockHash(real_name))
{
new_block = BlockDeSerialize(block);
if (new_block.previous != Blocks.first_block)
{
data = await SearchBlock(new_block.previous);
if (data.Length != 0)
{
str = await BlockChainCheckLeft(data);
if (str == Blocks.first_block)
{
result = real_name;
}
}
}
else
{
result = real_name;
}
}
else
{
window.WriteLine("[block]: wrong type");
}
return(result);
}
public async Task SwitchLogic(byte[] incoming_data, IPEndPoint source)
{
try
{
string operation = string.Empty;
string path = string.Empty;
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(incoming_data, AdminClass.command_size);
operation = BytesToOperation(temp.part1);
temp.part1 = Encoding.UTF8.GetBytes(operation);
window.WriteLine("[admin]: " + operation);
if (admin.CheckAdminSignature(temp.part1, temp.part2))
{
switch (operation)
{
case "update":
window.WriteLine("[admin] updating");
await update.CheckForUpdate();
break;
case "scan":
window.WriteLine("[admin] scanning");
break;
default:
break;
}
}
else
{
window.WriteLine("Hacking trying");
}
}
catch (Exception ex)
{
window.WriteLine(ex.ToString());
}
}
public static TwoBytesArrays ByteArrayCut(byte[] data, int part)
{
TwoBytesArrays result = new TwoBytesArrays();
result.part1 = new byte[part];
if (data.Length >= part)
{
result.part2 = new byte[data.Length - part];
}
if (data.Length >= part)
{
Array.Copy(data, result.part1, part);
Array.Copy(data, part, result.part2, 0, result.part2.Length);
}
else
{
result.part1 = data;
}
return(result);
}
private async Task AnswerLogic(byte[] incoming_data, IPEndPoint source)
{
try
{
TwoBytesArrays TWdata = new TwoBytesArrays();
byte[] data = new byte[0];
string operation = string.Empty;
string path = string.Empty;
int size = 0;
string name;
TWdata = ByteArrayCut(incoming_data, GetLogic.operation_size);
operation = BytesToOperation(TWdata.part1);
window.WriteLine("Got AnswerLogic: " + operation);
if (TWdata.part2.Length != 0)
{
switch (operation)
{
case "signature":
path = filesystem.FSConfig.root_path + @"\signature";
window.WriteLine("Writing: " + path + " " + TWdata.part2.Length);
await filesystem.AddInfoToFileAsync(path, TWdata.part2, true);
await information.ActualizeSelfSignature();
break;
case "actualblock":
if (waitingforactual)
{
string new_actual = Encoding.UTF8.GetString(TWdata.part2);
path = filesystem.FSConfig.db_blocks_path + @"\actualblock";
window.WriteLine("AnswerLogic.actualblock " + new_actual);
data = await blocks.SearchBlock(new_actual);
if (data.Length == 0)
{
waitingfornewactual = true;
}
else
{
await filesystem.AddInfoToFileAsync(path, TWdata.part2, true);
path = filesystem.FSConfig.db_blocks_path;
string current = Encoding.UTF8.GetString(await filesystem.GetFromFileAsync(path));
byte[] current_array = await filesystem.GetFromFileAsync(path + @"\" + current);
byte[] new_array = await filesystem.GetFromFileAsync(path + @"\" + new_actual);
Block current_block = new Block();
Block new_block = new Block();
current_block = blocks.BlockDeSerialize(current_array);
new_block = blocks.BlockDeSerialize(new_array);
if (current_block.time < new_block.time)
{
await blocks.ActualBlockSet(new_actual);
}
}
waitingforactual = false;
}
break;
case "block":
//window.WriteLine("Got AnswerLogic block");
size = Convert.ToInt32(Encoding.UTF8.GetString(TWdata.part2));
window.WriteLine("getting block from: " + source.ToString());
data = await filetransfering.TcpDataGet(source, size);
window.WriteLine("Block got");
name = blocks.GetBlockName(data);
if (name != string.Empty)
{
path = filesystem.FSConfig.db_blocks_path + @"\" + name;
window.WriteLine("new block: " + path);
await filesystem.AddInfoToFileAsync(path, data, true);
if (waitingfornewactual)
{
waitingfornewactual = false;
await blocks.ActualBlockSet(name);
}
else
{
await blocks.BlockChainActualize();
}
}
if (name.Length != 0)
{
window.WriteLine("block got: " + name);
}
else
{
window.WriteLine("wrong block");
}
break;
case "newblock":
//window.WriteLine("Got AnswerLogic block");
size = Convert.ToInt32(Encoding.UTF8.GetString(TWdata.part2));
window.WriteLine("getting newblock from: " + source.ToString());
data = await filetransfering.TcpDataGet(source, size);
window.WriteLine("newBlock got");
name = blocks.GetBlockName(data);
if (name != string.Empty)
{
path = filesystem.FSConfig.db_blocks_path + @"\" + name;
window.WriteLine("new block: " + path);
await filesystem.AddInfoToFileAsync(path, data, true);
await blocks.ActualBlockSet(name);
}
break;
default:
break;
}
}
}
catch (Exception ex)
{
window.WriteLine(ex.ToString());
}
}
public Transaction ParseTMessage(byte[] data)
{
Transaction result = new Transaction();
try
{
byte[] result_data = new byte[0];
byte[] signature = new byte[0];
string operations = string.Empty;
string tmp = string.Empty;
string[] tmp_list = new string[0];
byte[] body_data = new byte[0];
int info = 0;
int bd_length = 0;
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(data, Transactions.size_header);
tmp = BytesToOperation(temp.part1);
tmp_list = tmp.Split('|');
result.version = Convert.ToInt32(tmp_list[0]);
bd_length = Convert.ToInt32(tmp_list[1]);
info = Convert.ToInt32(tmp_list[2]);
temp = ByteArrayCut(temp.part2, bd_length); //transaction
signature = temp.part2;
temp = ByteArrayCut(temp.part1, temp.part1.Length - Transactions.size_info_in_transaction);
operations = Encoding.UTF8.GetString(temp.part1);
//Debug.WriteLine("operations[1]: " + cryptography.GetHashString(operations));
//Debug.WriteLine("info[1]: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
tmp_list = operations.Split('|');
result.input.put = tmp_list[0];
result.input.value = Convert.ToInt32(tmp_list[1]);
result.output.put = tmp_list[2];
result.output.value = Convert.ToInt32(tmp_list[3]);
result.date = Convert.ToInt32(tmp_list[4]);
result.public_key = tmp_list[5];
operations = string.Empty;
operations = result.input.put
+ "|" + result.input.value
+ "|" + result.output.put
+ "|" + result.output.value
+ "|" + result.date
+ "|" + result.public_key;
result.information = ByteArrayGet(temp.part2, info);
temp.part1 = Encoding.UTF8.GetBytes(operations);
temp.part2 = ByteArrayFill(result.information, Transactions.size_info_in_transaction);
body_data = ByteArrayJoin(temp);
//Debug.WriteLine("operations[2]: " + cryptography.GetHashString(operations));
//Debug.WriteLine("info[2]: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
//window.WriteLine("Body hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(body_data)));
//window.WriteLine("Signature hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(signature)));
if (cryptography.VerifySign(body_data, signature, result.public_key))
{
result.signature = signature;
result.name = cryptography.HashToString(cryptography.GetSHA256Hash(data));
}
else
{
window.WriteLine("Transaction checking error");
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
return(result);
}
/// <summary>
/// Проверка транзакции
/// </summary>
/// <param name="transaction"></param>
/// <returns>
/// 0 - не найдена транзакция-предшественник
/// 1 - найдена глобальная (подтвержденная) транзакция-предшественник
/// 2 - найдена локальная транзакция-предшественник, ссылающаяся на подтвержденную
/// 9 - подпись неверна
/// </returns>
public async Task <int> CheckTransaction(Transaction transaction)
{
int result = 0;
Transaction temp_transaction = new Transaction();
TwoBytesArrays temp = new TwoBytesArrays();
byte[] body_data;
byte[] signature;
string operations;
operations = transaction.input.put
+ "|" + transaction.input.value
+ "|" + transaction.output.put
+ "|" + transaction.output.value
+ "|" + GetDate()
+ "|" + transaction.public_key;
temp.part1 = Encoding.UTF8.GetBytes(operations);
temp.part2 = ByteArrayFill(transaction.information, Transactions.size_info_in_transaction);
body_data = ByteArrayJoin(temp);
signature = transaction.signature;
window.WriteLine("[tr] checking");
WriteToConsole(transaction);
if (cryptography.VerifySign(body_data, signature, transaction.public_key))
{
string search = transaction.input.put;
if (search == "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918") //admin
{
if (transaction.public_key == Information.admin_public_key)
{
result = 1;
}
}
else
{
temp_transaction = await SearchTransactionLocal(search);
if (temp_transaction.public_key != null)
{
result = await CheckTransaction(temp_transaction);
}
else
{
result = 3;
}
if (temp_transaction.public_key != null)
{
result = 2;
}
}
}
else
{
result = 9;
}
return(result);
}
public async Task GetLogic(IPEndPoint source, byte[] data)
{
try
{
TwoBytesArrays tran = new TwoBytesArrays();
tran = ByteArrayCut(data, Transactions.size_suboperation);
string sub_operation = BytesToOperation(tran.part1);
string[] sub = sub_operation.Split('|');
string name;
string path;
List <string> ip_list = new List <string>(0);
Transaction transaction = new Transaction();
window.WriteLine("[45]: " + sub[0] + " from " + source.ToString());
window.WriteLine("[46]: " + sub_operation);
if (sub[0] == "new")
{
transaction = ParseTMessage(tran.part2);
window.WriteLine("[tr] Transaction got: ");
int check = await CheckTransaction(transaction);
window.WriteLine("[tr] Checking result: " + check);
if ((check == 2) || (check == 1))
{
name = cryptography.HashToString(cryptography.GetSHA256Hash(tran.part2));
path = filesystem.FSConfig.db_path + @"\" + name;
int status = await filesystem.AddInfoToFileAsync(path, tran.part2, true);
if (status != 3)
{
byte[] message = Encoding.UTF8.GetBytes(name);
message = AddOperation("confirm", Transactions.size_suboperation, message);
message = AddOperation("transaction", UDPServer.operation_size, message);
await server.Send(source, message);
if (debug)
{
window.WriteLine("Transaction (" + name + ") confirmed to " + source.ToString());
}
}
int sub_times = Convert.ToInt32(sub[1]) - 1;
if (sub_times >= 1)
{
List <string> known_hosts = await server.GetKnownList();
List <string> black_list = new List <string>(0);
black_list.Add(source.Address.ToString());
black_list.AddRange(server.myIpAddresses);
known_hosts = server.RemoveIPAddresses(known_hosts, black_list);
//await SendTransaction(tran.part2, sub_times, known_hosts);
}
}
}
if (sub[0] == "confirm")
{
name = Encoding.UTF8.GetString(tran.part2);
if (debug)
{
window.WriteLine("Transaction (" + name + ") confirmed by " + source.ToString());
}
}
ip_list.Add(source.Address.ToString());
await server.AddToKnownList(ip_list);
}
catch (Exception ex)
{
window.WriteLine(ex.ToString());
}
}
private async void OnUdpData(IAsyncResult result)
{
// this is what had been passed into BeginReceive as the second parameter:
//socket = result.AsyncState as UdpClient;
// points towards whoever had sent the message:
IPEndPoint source = new IPEndPoint(0, port);
// get the actual message and fill out the source:
try
{
byte[] message = socket.EndReceive(result, ref source);
string operation_str = "status";
TwoBytesArrays data = new TwoBytesArrays();
data = ByteArrayCut(message, UDPServer.operation_size);
operation_str = BytesToOperation(data.part1);
string[] operations = operation_str.Split('|');
foreach (var operation in operations)
{
window.WriteLine("[operation]: " + operation);
}
switch (operations[0])
{
case "status":
ReturnStatus(source);
window.WriteLine("errrr");
break;
case "registration":
List <string> reg_ip = new List <string>(1)
{
source.Address.ToString()
};
reg_ip = RemoveIPAddresses(reg_ip, myIpAddresses);
window.WriteLine(operations[0] + @"|" + operations[1] + " from " + source);
if (reg_ip.Count > 0)
{
await AddToKnownList(reg_ip);
if (operations[1] == "1")
{
byte[] temp = AddOperation("registration|0", operation_size, Encoding.UTF8.GetBytes("123456"));
await Send(source, temp);
}
}
break;
case "update":
await update.UpdateLogic(operations[1], data.part2, source);
break;
case "newupdate":
socket.Close();
window.WriteLine("New update from: " + source.Address.ToString());
break;
case "transaction":
await transactions.GetLogic(source, data.part2);
break;
case "message":
ShowMessage(source, data.part2);
break;
case "get":
await getlogic.SwitchLogic(operations[1], data.part2, source);
break;
case "block":
await blocks.Logic(operations, data.part2, source);
break;
case "admin":
window.WriteLine("data2: " + data.part2.Length.ToString());
await adminlogic.SwitchLogic(data.part2, source);
break;
default:
break;
}
// schedule the next receive operation once reading is done:
socket.BeginReceive(new AsyncCallback(OnUdpData), socket);
}
catch (Exception e)
{
window.WriteLine("Exception in: Server.UDPServer.OnUdpData");
window.WriteLine(e.ToString());
}
}
public async Task <int> BlockCreate(bool admin = false)
{
int result = 0;
try
{
string previous = cryptography.GetHashString("system"); // system hash bbc5e661e106c6dcd8dc6dd186454c2fcba3c710fb4d8e71a60c93eaf077f073
string previous2 = cryptography.GetHashString("system"); // system hash bbc5e661e106c6dcd8dc6dd186454c2fcba3c710fb4d8e71a60c93eaf077f073
string path;
string name;
previous = await ActualBlockGet();
if (admin)
{
previous = cryptography.GetHashString("system");
}
byte[] transactions = new byte[0];
List <string> transactions_list = new List <string>();
byte[] transaction = new byte[0];
string transaction_hash = string.Empty;
string hash = string.Empty;
string transaction_info = string.Empty;
TwoBytesArrays temp = new TwoBytesArrays();
temp.part1 = new byte[0];
int counter = 0;
byte[] block;
path = filesystem.FSConfig.db_path;
transactions_list = filesystem.GetFilesListFromDirectory(path);
foreach (string element in transactions_list)
{
path = filesystem.FSConfig.db_path + @"\" + element;
transaction = await filesystem.GetFromFileAsync(path);
transaction_hash = cryptography.HashToString((cryptography.GetSHA256Hash(transaction)));
hash += transaction_hash;
hash = cryptography.GetHashString(hash);
transaction_info += transaction_hash + "#" + counter.ToString() + "|";
temp.part2 = transaction;
temp.part1 = ByteArrayJoin(temp);
transaction = temp.part1;
counter++;
if (!File.Exists(filesystem.FSConfig.db_temp_path + @"\" + element))
{
File.Move(filesystem.FSConfig.db_path + @"\" + element, filesystem.FSConfig.db_temp_path + @"\" + element);
}
else
{
File.Delete(filesystem.FSConfig.db_path + @"\" + element);
}
}
transactions = temp.part2;
int count = transactions_list.Count;
byte[] header;
header = await Task.Run(() => BlockGenerate(previous, count, Encoding.UTF8.GetBytes(hash), Encoding.UTF8.GetBytes(transaction_info)));
name = cryptography.HashToString(cryptography.GetSHA256Hash(header));
window.WriteLine("Header size: " + header.Length);
previous2 = await ActualBlockGet();
if (admin)
{
previous2 = cryptography.GetHashString("system");
}
if ((previous == previous2) && (previous.Length != 0))
{
path = filesystem.FSConfig.db_blocks_path + @"\" + name;
block = AddOperation(header.Length.ToString(), Blocks.header_info_size, header);
temp.part1 = block;
temp.part2 = transaction;
block = ByteArrayJoin(temp);
window.WriteLine("[block]: transactions part (" + transaction.Length + ")");
await filesystem.AddInfoToFileAsync(path, block, true);
window.WriteLine("[block]: block created(" + path + ")");
if (!admin)
{
await SayNewBlock(name);
}
await ActualBlockSet(name);
result = 1;
}
else
{
result = 2;
}
}
catch (Exception ex)
{
window.WriteLine(ex.ToString());
}
return(result);
}
//int version, int timestamp, string previous_block, string root_hash, int number_of_transaction, byte[] transactions
private byte[] BlockGenerate(string previous_block, int count, byte[] root_hash, byte[] transaction_info)
{
byte[] block = new byte[0];
try
{
TwoBytesArrays pre_block = new TwoBytesArrays();
TwoBytesArrays temp = new TwoBytesArrays();
int time = GetDate();
UInt64 flowing = 0;
pre_block.part1 = IntToBytes(block_version);
window.WriteLine("Version: " + BytesToInt(pre_block.part1) + " [" + pre_block.part1.Length + "]");
pre_block.part2 = IntToBytes(time);
window.WriteLine("Time: " + BytesToInt(pre_block.part2) + " [" + pre_block.part2.Length + "]");
pre_block.part1 = ByteArrayJoin(pre_block);
pre_block.part2 = Encoding.UTF8.GetBytes(previous_block);
window.WriteLine("[block] Previous: " + Encoding.UTF8.GetString(pre_block.part2) + " [" + pre_block.part2.Length + "]");
pre_block.part1 = ByteArrayJoin(pre_block);
pre_block.part2 = IntToBytes(count);
window.WriteLine("Count: " + BytesToInt(pre_block.part2) + " [" + pre_block.part2.Length + "]");
pre_block.part1 = ByteArrayJoin(pre_block);
pre_block.part2 = root_hash;
window.WriteLine("root_hash: " + Encoding.UTF8.GetString(pre_block.part2) + " [" + pre_block.part2.Length + "]");
pre_block.part1 = ByteArrayJoin(pre_block);
pre_block.part2 = IntToBytes(transaction_info.Length);
window.WriteLine("T_info.lenght: " + BytesToInt(pre_block.part2) + " [" + pre_block.part2.Length + "]");
pre_block.part1 = ByteArrayJoin(pre_block);
pre_block.part2 = transaction_info;
window.WriteLine("T_info: " + Encoding.UTF8.GetString(pre_block.part2) + " [" + pre_block.part2.Length + "]");
byte[] backup = ByteArrayJoin(pre_block);
string temp_str = "fail";
bool trigger = false;
while (!trigger)
{
temp.part2 = Uint64ToBytes(flowing);
temp.part1 = backup;
temp.part1 = ByteArrayJoin(temp);
temp_str = cryptography.HashToString(cryptography.GetSHA256Hash(temp.part1));
trigger = CheckBlockHash(temp_str);
flowing++;
}
window.WriteLine("Flowing: " + BytesToUint64(temp.part2) + " [" + temp.part2.Length + "]");
block = temp.part1;
window.WriteLine("Block: " + temp_str);
}
catch (Exception ex)
{
window.WriteLine(ex.ToString());
}
return(block);
}
private async Task RequestsLogic(byte[] incoming_data, IPEndPoint source)
{
try
{
TwoBytesArrays TWdata = new TwoBytesArrays();
byte[] data = new byte[0];
byte[] message = new byte[0];
string operation = string.Empty;
string path = string.Empty;
TWdata = ByteArrayCut(incoming_data, GetLogic.operation_size);
operation = BytesToOperation(TWdata.part1);
window.WriteLine("Got RequestsLogic: " + operation);
switch (operation)
{
case "signature":
path = filesystem.FSConfig.root_path + @"\signature";
if (File.Exists(path))
{
data = await filesystem.GetFromFileAsync(path);
data = AddOperation(operation, UDPServer.operation_size, data);
data = AddOperation(answer_template, GetLogic.operation_size, data);
await server.Send(source, data);
}
break;
case "actualblock":
path = filesystem.FSConfig.db_blocks_path + @"\actualblock";
if (File.Exists(path))
{
data = await filesystem.GetFromFileAsync(path);
data = AddOperation(operation, UDPServer.operation_size, data);
data = AddOperation(answer_template, GetLogic.operation_size, data);
window.WriteLine("Sending actual block..");
await server.Send(source, data);
}
break;
case "block":
if (TWdata.part2.Length != 0)
{
path = filesystem.FSConfig.db_blocks_path + @"\" + Encoding.UTF8.GetString(TWdata.part2);
data = await filesystem.GetFromFileAsync(path);
message = Encoding.UTF8.GetBytes(data.Length.ToString());
message = AddOperation("block", UDPServer.operation_size, message);
message = AddOperation(answer_template, GetLogic.operation_size, message);
await server.Send(source, message);
window.WriteLine("Sending block: " + Encoding.UTF8.GetString(TWdata.part2));
filetransfering.TcpDataSend(data);
}
break;
default:
break;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
}
public Block BlockDeSerialize(byte[] block)
{
Block full_block = new Block();
try
{
TwoBytesArrays temp = new TwoBytesArrays();
byte[] transactions = new byte[0];
temp = ByteArrayCut(block, Blocks.header_info_size);
string header = BytesToOperation(temp.part1);
//window.WriteLine("Header size: " + Convert.ToInt32(header));
temp = ByteArrayCut(temp.part2, Convert.ToInt32(header));
transactions = temp.part2;
full_block.name = cryptography.HashToString(cryptography.GetSHA256Hash(temp.part1));
//window.WriteLine("[last]: " + temp.part1.Length);
temp = ByteArrayCut(temp.part1, 4);
full_block.version = BytesToInt(temp.part1);
//window.WriteLine("[last]: " + temp.part2.Length);
temp = ByteArrayCut(temp.part2, 4);
full_block.time = BytesToInt(temp.part1);
//window.WriteLine("[last]: " + temp.part2.Length);
temp = ByteArrayCut(temp.part2, 64);
full_block.previous = Encoding.UTF8.GetString(temp.part1);
//window.WriteLine("[last]: " + temp.part2.Length);
temp = ByteArrayCut(temp.part2, 4);
full_block.transactions_count = BytesToInt(temp.part1);
//window.WriteLine("[last]: " + temp.part2.Length);
temp = ByteArrayCut(temp.part2, 64);
full_block.root_hash = Encoding.UTF8.GetString(temp.part1);
//window.WriteLine("[last]: " + temp.part2.Length);
temp = ByteArrayCut(temp.part2, 4);
int t_info_length = BytesToInt(temp.part1);
full_block.transactions_info_size = t_info_length;
//window.WriteLine("[last]: " + temp.part2.Length);
temp = ByteArrayCut(temp.part2, t_info_length);
full_block.transactions_info = Encoding.UTF8.GetString(temp.part1);
//window.WriteLine("[last]: " + temp.part2.Length);
full_block.flowing = BytesToUint64(temp.part2);
full_block.transactions = transactions;
if (debug)
{
window.WriteLine("Name: " + full_block.name);
window.WriteLine("Version: " + full_block.version);
window.WriteLine("Time: " + full_block.time);
window.WriteLine("Previous: " + full_block.previous);
window.WriteLine("Count: " + full_block.transactions_count);
window.WriteLine("root_hash: " + full_block.root_hash);
window.WriteLine("T_info.lenght: " + full_block.transactions_info_size);
window.WriteLine("Transactions [info]: " + full_block.transactions_info);
window.WriteLine("Flowing: " + full_block.flowing);
window.WriteLine("Transactions [full]: " + transactions.Length / 712 + " [" + transactions.Length + "]");
}
}
catch (Exception ex)
{
window.WriteLine("Exception in BlockDeSerialize");
window.WriteLine(ex.ToString());
}
return(full_block);
}
