public bool Run(bool txid, IConfiguration cfg, HttpClient httpClient, ITxBuilder txBuilder, Dictionary <string, string> settings, string progressId, string pluginsFolder, string url, string[] command, out bool inProgress, out string msg)
{
Debug.Assert(command != null);
if (command.Length < 2)
{
inProgress = false;
msg = "invalid parameter count";
return(false);
}
bool erc20 = command[0].Equals("collectCoins", StringComparison.OrdinalIgnoreCase);
if (erc20 || command[0].Equals("registerTransfer", StringComparison.OrdinalIgnoreCase))
{
// ethereum RegisterTransfer gain orderId
// ethereum CollectCoins amount
string progress = Path.Combine(pluginsFolder, $"{name}_progress{progressId}.txt");
inProgress = false;
if (erc20 && command.Length != 2 || !erc20 && command.Length != 3)
{
msg = "invalid parameter count";
return(false);
}
string gainString = "0";
string orderId = null;
string amountString = null;
if (erc20)
{
amountString = command[1];
}
else
{
gainString = command[1];
orderId = command[2];
}
string secret = cfg["secret"];
if (string.IsNullOrWhiteSpace(secret))
{
msg = "ethereum.secret is not set";
return(false);
}
var ethereumPrivateKey = secret;
#if DEBUG
string confirmationsCount = cfg["confirmationsCount"];
if (int.TryParse(confirmationsCount, out int parsedCount))
{
mConfirmationsExpected = parsedCount;
}
#endif
string rpcUrl = cfg["rpc"];
if (string.IsNullOrWhiteSpace(rpcUrl))
{
msg = "ethereum.rpc is not set";
return(false);
}
string ethSrcAddress = EthECKey.GetPublicAddress(ethereumPrivateKey);
var web3 = new Nethereum.Web3.Web3(rpcUrl);
string srcAddressId = null;
string dstAddressId = null;
if (!erc20)
{
var protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{orderId}", out msg);
if (protobuf == null)
{
msg = "failed to extract address data through RPC";
return(false);
}
if (orderId.StartsWith(RpcHelper.creditCoinNamespace + RpcHelper.dealOrderPrefix))
{
var dealOrder = DealOrder.Parser.ParseFrom(protobuf);
if (gainString.Equals("0"))
{
srcAddressId = dealOrder.SrcAddress;
dstAddressId = dealOrder.DstAddress;
}
else
{
dstAddressId = dealOrder.SrcAddress;
srcAddressId = dealOrder.DstAddress;
}
amountString = dealOrder.Amount;
}
else if (orderId.StartsWith(RpcHelper.creditCoinNamespace + RpcHelper.repaymentOrderPrefix))
{
var repaymentOrder = RepaymentOrder.Parser.ParseFrom(protobuf);
if (gainString.Equals("0"))
{
srcAddressId = repaymentOrder.SrcAddress;
dstAddressId = repaymentOrder.DstAddress;
}
else
{
dstAddressId = repaymentOrder.SrcAddress;
srcAddressId = repaymentOrder.DstAddress;
}
amountString = repaymentOrder.Amount;
}
else
{
msg = "unexpected referred order";
return(false);
}
}
string payTxId;
if (File.Exists(progress))
{
Console.WriteLine("Found unfinished action, retrying...");
payTxId = File.ReadAllText(progress);
}
else
{
string ethDstAddress = null;
if (!erc20)
{
var protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{srcAddressId}", out msg);
if (protobuf == null)
{
msg = "failed to extract address data through RPC";
return(false);
}
var srcAddress = Address.Parser.ParseFrom(protobuf);
protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{dstAddressId}", out msg);
if (protobuf == null)
{
msg = "failed to extract address data through RPC";
return(false);
}
Address dstAddress = Address.Parser.ParseFrom(protobuf);
if (!srcAddress.Blockchain.Equals(name) || !dstAddress.Blockchain.Equals(name))
{
msg = $"ethereum RegisterTransfer can only transfer ether.\nThis source is registered for {srcAddress.Blockchain} and destination for {dstAddress.Blockchain}";
return(false);
}
ethDstAddress = dstAddress.Value;
if (!ethSrcAddress.Equals(srcAddress.Value, StringComparison.OrdinalIgnoreCase))
{
msg = "The deal is for a different client";
return(false);
}
}
BigInteger transferAmount;
if (!BigInteger.TryParse(amountString, out transferAmount) || transferAmount <= 0)
{
msg = "Invalid amount";
return(false);
}
BigInteger gain;
if (!BigInteger.TryParse(gainString, out gain))
{
msg = "Invalid amount";
return(false);
}
transferAmount = transferAmount + gain;
if (transferAmount < 0)
{
msg = "Invalid amount";
return(false);
}
var txCount = web3.Eth.Transactions.GetTransactionCount.SendRequestAsync(ethSrcAddress).Result;
TransactionSigner signer = new TransactionSigner();
HexBigInteger gasPrice;
string gasPriceInGweiString = cfg["gasPriceInGwei"];
if (int.TryParse(gasPriceInGweiString, out int gasPriceOverride))
{
gasPrice = new HexBigInteger(Nethereum.Util.UnitConversion.Convert.ToWei(gasPriceOverride, Nethereum.Util.UnitConversion.EthUnit.Gwei));
}
else
{
gasPrice = web3.Eth.GasPrice.SendRequestAsync().Result;
}
Console.WriteLine("gasPrice: " + gasPrice.Value.ToString());
string to;
string data;
BigInteger amount;
HexBigInteger gasLimit;
if (erc20)
{
string creditcoinContract = cfg["creditcoinContract"];
string creditcoinContractAbi = cfg["creditcoinContractAbi"];
to = creditcoinContract;
var contract = web3.Eth.GetContract(creditcoinContractAbi, creditcoinContract);
var burn = contract.GetFunction("exchange");
var functionInput = new object[] { transferAmount, txBuilder.getSighash() };
data = burn.GetData(functionInput);
gasLimit = burn.EstimateGasAsync(functionInput).Result;
amount = 0;
}
else
{
gasLimit = web3.Eth.Transactions.EstimateGas.SendRequestAsync(new Nethereum.RPC.Eth.DTOs.CallInput(orderId, ethDstAddress, new Nethereum.Hex.HexTypes.HexBigInteger(transferAmount))).Result;
Console.WriteLine("gasLimit: " + gasLimit.Value.ToString());
to = ethDstAddress;
data = orderId;
amount = transferAmount;
}
string txRaw = signer.SignTransaction(ethereumPrivateKey, to, amount, txCount, gasPrice, gasLimit, data);
payTxId = web3.Eth.Transactions.SendRawTransaction.SendRequestAsync("0x" + txRaw).Result;
Console.WriteLine("Ethereum Transaction ID: " + payTxId);
File.WriteAllText(progress, $"{payTxId}");
}
inProgress = true;
while (true)
{
var receipt = web3.Eth.TransactionManager.TransactionReceiptService.PollForReceiptAsync(payTxId).Result;
if (receipt.BlockNumber != null)
{
var blockNumber = web3.Eth.Blocks.GetBlockNumber.SendRequestAsync().Result;
if (blockNumber.Value - receipt.BlockNumber.Value >= mConfirmationsExpected)
{
break;
}
}
Thread.Sleep(1000);
}
File.Delete(progress);
inProgress = false;
if (erc20)
{
command = new string[] { command[0], ethSrcAddress, amountString, payTxId };
}
else
{
command = new string[] { command[0], gainString, orderId, payTxId };
}
var tx = txBuilder.BuildTx(command, out msg);
if (tx == null)
{
return(false);
}
Debug.Assert(msg == null);
var content = new ByteArrayContent(tx);
content.Headers.Add("Content-Type", "application/octet-stream");
msg = RpcHelper.CompleteBatch(httpClient, url, "batches", content, txid);
return(true);
}
else
{
inProgress = false;
msg = "Unknown command: " + command[0];
return(false);
}
}
public bool Run(IConfiguration cfg, HttpClient httpClient, ITxBuilder txBuilder, Dictionary <string, string> settings, string pluginsFolder, string url, string[] command, out bool inProgress, out string msg)
{
Debug.Assert(command != null);
Debug.Assert(command.Length > 1);
if (command[0].Equals("registerTransfer", StringComparison.OrdinalIgnoreCase))
{
// bitcoin RegisterTransfer registeredSourceId amount sourceTxId
string progress = Path.Combine(pluginsFolder, $"{name}_progress.txt");
inProgress = false;
Debug.Assert(command.Length == 4);
string registeredSourceId = command[1];
string amountString = command[2];
string sourceTxIdString = command[3];
string secret = cfg["secret"];
if (string.IsNullOrWhiteSpace(secret))
{
msg = "bitcoin.secret is not set";
return(false);
}
string rpcAddress = cfg["rpc"];
if (string.IsNullOrWhiteSpace(rpcAddress))
{
msg = "bitcoin.rpc is not set";
return(false);
}
string credential = cfg["credential"];
if (string.IsNullOrWhiteSpace(credential))
{
msg = "bitcoin.credential is not set";
return(false);
}
//TODO disable confirmation count config for release build
string confirmationsCount = cfg["confirmationsCount"];
if (string.IsNullOrWhiteSpace(confirmationsCount))
{
msg = "bitcoin.confirmationsCount is not set";
return(false);
}
int confirmationsExpected = 1;
if (!int.TryParse(confirmationsCount, out confirmationsExpected))
{
msg = "bitcoin.confirmationsCount is not an int";
return(false);
}
string feeString = cfg["fee"];
if (string.IsNullOrWhiteSpace(feeString))
{
msg = "bitcoin.fee is not set";
return(false);
}
if (!int.TryParse(feeString, out int fee))
{
msg = "bitcoin.fee is not an int";
return(false);
}
var bitcoinPrivateKey = new BitcoinSecret(secret);
var network = bitcoinPrivateKey.Network;
var rpcClient = new RPCClient(credential, new Uri(rpcAddress), network);
string payTxIdHash;
uint256 payTxId;
if (File.Exists(progress))
{
Console.WriteLine("Found unfinished action, retrying...");
payTxIdHash = File.ReadAllText(progress);
if (!uint256.TryParse(payTxIdHash, out payTxId))
{
msg = "corrupted progress file";
return(false);
}
}
else
{
var protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{registeredSourceId}", out msg);
if (protobuf == null)
{
return(false);
}
var address = Address.Parser.ParseFrom(protobuf);
string destinationAddress;
if (!settings.TryGetValue("sawtooth.escrow." + name, out destinationAddress))
{
msg = "Escrow not found for " + name;
return(false);
}
Money transferAmount;
if (!Money.TryParse(amountString, out transferAmount) || transferAmount <= 0)
{
msg = "Invalid amount";
return(false);
}
if (!address.Blockchain.Equals(name))
{
msg = $"bitcoin RegisterTransfer can only transfer bitcoins.\nThis source is registered for {address.Blockchain}";
return(false);
}
var sourceAddress = bitcoinPrivateKey.GetAddress();
if (!sourceAddress.ToString().Equals(address.Address_, StringComparison.OrdinalIgnoreCase))
{
msg = "The deal is for a different client";
return(false);
}
#if RELEASE
if (network != NBitcoin.Network.Main)
{
msg = "bitcoin.secret is not defined for main network";
return(false);
}
#endif
var sourceTxId = uint256.Parse(sourceTxIdString);
var transactionResponse = rpcClient.GetRawTransaction(sourceTxId);
//TODO: fix (assuming that the transaction has one output intended for the private key with the exact amount)
var receivedCoins = transactionResponse.Outputs.AsCoins();
OutPoint outPointToSpend = null;
TxOut outTxToSpend = null;
Money amount = null;
foreach (var coin in receivedCoins)
{
if (coin.TxOut.ScriptPubKey == bitcoinPrivateKey.ScriptPubKey)
{
outPointToSpend = coin.Outpoint;
outTxToSpend = coin.TxOut;
amount = (Money)coin.Amount;
if (amount.CompareTo(transferAmount + fee * 2) < 0)
{
msg = $"Invalid transaction - needed: {transferAmount}, has: {amount.ToString()}";
return(false);
}
break;
}
}
if (outPointToSpend == null)
{
msg = "Invalid transaction - no outputs that the client can spend";
return(false);
}
var addressFrom = BitcoinAddress.Create(address.Address_, network);
var addressTo = BitcoinAddress.Create(destinationAddress, network);
var message = address.Sighash;
var bytes = Encoding.UTF8.GetBytes(message);
var bitcoinTransactionBuilder = new TransactionBuilder();
var transaction = bitcoinTransactionBuilder
.AddCoins(new Coin(outPointToSpend, outTxToSpend))
.AddKeys(bitcoinPrivateKey)
.Send(addressTo.ScriptPubKey, transferAmount + fee)
.Send(TxNullDataTemplate.Instance.GenerateScriptPubKey(bytes), Money.Zero)
.SendFees(new Money(fee, MoneyUnit.Satoshi))
.SetChange(addressFrom.ScriptPubKey)
.BuildTransaction(true);
if (!bitcoinTransactionBuilder.Verify(transaction))
{
msg = "failed verify transaction";
return(false);
}
try
{
payTxId = rpcClient.SendRawTransaction(transaction);
}
catch (RPCException e)
{
msg = $"failed to broadcast - error: {e.RPCCode}, reason: {e.RPCCodeMessage}";
return(false);
}
if (payTxId == null)
{
msg = "failed to broadcast - unknown error";
return(false);
}
payTxIdHash = payTxId.ToString();
File.WriteAllText(progress, payTxIdHash);
}
inProgress = true;
while (true)
{
var transactionResponse = rpcClient.GetRawTransactionInfo(payTxId);
if (transactionResponse != null && transactionResponse.BlockHash != null && transactionResponse.Confirmations >= confirmationsExpected)
{
break;
}
Thread.Sleep(1000);
}
command = new string[] { command[0], registeredSourceId, amountString, feeString, payTxIdHash, ((network == Network.Main) ? "1" : "0") };
var tx = txBuilder.BuildTx(command, out msg);
Debug.Assert(tx != null);
Debug.Assert(msg == null);
var content = new ByteArrayContent(tx);
content.Headers.Add("Content-Type", "application/octet-stream");
msg = RpcHelper.CompleteBatch(httpClient, $"{url}/batches", content);
File.Delete(progress);
inProgress = false;
return(true);
}
else
{
inProgress = false;
msg = "Unknown command: " + command[0];
return(false);
}
}
public bool Run(IConfiguration cfg, HttpClient httpClient, ITxBuilder txBuilder, Dictionary <string, string> settings, string pluginsFolder, string url, string[] command, out bool inProgress, out string msg)
{
Debug.Assert(command != null);
Debug.Assert(command.Length > 1);
if (command[0].Equals("registerTransfer", StringComparison.OrdinalIgnoreCase))
{
// ethereum RegisterTransfer registeredSourceId amount
string progress = Path.Combine(pluginsFolder, $"{name}_progress.txt");
inProgress = false;
Debug.Assert(command.Length == 3 || command.Length == 4);
string registeredSourceId = command[1];
string amountString = command[2];
bool erc20 = command.Length == 4;
string secret = cfg["secret"];
if (string.IsNullOrWhiteSpace(secret))
{
msg = "ethereum.secret is not set";
return(false);
}
var ethereumPrivateKey = secret;
// TODO disable confirmation count config for release build
string confirmationsCount = cfg["confirmationsCount"];
if (string.IsNullOrWhiteSpace(confirmationsCount))
{
msg = "ethereum.confirmationsCount is not set";
return(false);
}
if (!int.TryParse(confirmationsCount, out int confirmationsExpected))
{
msg = "ethereum.confirmationsCount is not an int";
return(false);
}
string rpcUrl = cfg["rpc"];
if (string.IsNullOrWhiteSpace(rpcUrl))
{
msg = "ethereum.rpc is not set";
return(false);
}
var web3 = new Nethereum.Web3.Web3(rpcUrl);
string payTxId;
BigInteger fee;
if (File.Exists(progress))
{
Console.WriteLine("Found unfinished action, retrying...");
var data = File.ReadAllText(progress).Split(':');
if (data.Length != 2)
{
msg = "Invalid progress data";
return(false);
}
payTxId = data[0];
if (!BigInteger.TryParse(data[1], out fee))
{
msg = "Invalid progress data";
return(false);
}
}
else
{
var protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{registeredSourceId}", out msg);
if (protobuf == null)
{
return(false);
}
var address = Address.Parser.ParseFrom(protobuf);
string destinationAddress;
if (!settings.TryGetValue("sawtooth.escrow." + name, out destinationAddress))
{
msg = "Escrow not found for " + name;
return(false);
}
BigInteger transferAmount;
if (!BigInteger.TryParse(amountString, out transferAmount) || transferAmount <= 0)
{
msg = "Invalid amount";
return(false);
}
if (!address.Blockchain.Equals(name))
{
msg = $"ethereum RegisterTransfer can only transfer ether.\nThis source is registered for {address.Blockchain}";
return(false);
}
string sourceAddress = EthECKey.GetPublicAddress(ethereumPrivateKey);
if (!sourceAddress.Equals(address.Address_, StringComparison.OrdinalIgnoreCase))
{
msg = "The deal is for a different client";
return(false);
}
var txCount = web3.Eth.Transactions.GetTransactionCount.SendRequestAsync(sourceAddress).Result;
TransactionSigner signer = new TransactionSigner();
// TODO maybe add a y/n choice for user to decline or configurable gas price override
var gasPrice = web3.Eth.GasPrice.SendRequestAsync().Result;
Console.WriteLine("gasPrice: " + gasPrice.Value.ToString());
string to;
string data;
BigInteger amount;
HexBigInteger gasLimit;
if (erc20)
{
string creditcoinContract = cfg["creditcoinContract"];
string creditcoinContractAbi = cfg["creditcoinContractAbi"];
to = creditcoinContract;
var contract = web3.Eth.GetContract(creditcoinContractAbi, creditcoinContract);
var burn = contract.GetFunction("exchange");
var functionInput = new object[] { transferAmount, address.Sighash };
data = burn.GetData(functionInput);
gasLimit = burn.EstimateGasAsync(functionInput).Result;
fee = gasLimit.Value * gasPrice.Value;
amount = 0;
}
else
{
gasLimit = web3.Eth.Transactions.EstimateGas.SendRequestAsync(new Nethereum.RPC.Eth.DTOs.CallInput(registeredSourceId, destinationAddress, new Nethereum.Hex.HexTypes.HexBigInteger(transferAmount))).Result;
Console.WriteLine("gasLimit: " + gasLimit.Value.ToString());
fee = gasLimit.Value * gasPrice.Value;
to = destinationAddress;
data = address.Sighash;
amount = transferAmount + fee;
}
string txRaw = signer.SignTransaction(ethereumPrivateKey, to, amount, txCount, gasPrice, gasLimit, data);
payTxId = web3.Eth.Transactions.SendRawTransaction.SendRequestAsync("0x" + txRaw).Result;
Console.WriteLine("Ethereum Transaction ID: " + payTxId);
File.WriteAllText(progress, $"{payTxId}:{fee.ToString()}");
}
inProgress = true;
while (true)
{
var receipt = web3.Eth.TransactionManager.TransactionReceiptService.PollForReceiptAsync(payTxId).Result;
if (receipt.BlockNumber != null)
{
var blockNumber = web3.Eth.Blocks.GetBlockNumber.SendRequestAsync().Result;
if (blockNumber.Value - receipt.BlockNumber.Value >= confirmationsExpected)
{
break;
}
}
Thread.Sleep(1000);
}
File.Delete(progress);
inProgress = false;
command = new string[] { command[0], registeredSourceId, amountString, erc20 ? "0" : fee.ToString(), payTxId, erc20 ? "creditcoin" : "1" };
var tx = txBuilder.BuildTx(command, out msg);
if (tx == null)
{
return(false);
}
Debug.Assert(msg == null);
var content = new ByteArrayContent(tx);
content.Headers.Add("Content-Type", "application/octet-stream");
msg = RpcHelper.CompleteBatch(httpClient, $"{url}/batches", content);
return(true);
}
else
{
inProgress = false;
msg = "Unknown command: " + command[0];
return(false);
}
}
public bool Run(bool txid, IConfiguration cfg, HttpClient httpClient, ITxBuilder txBuilder, Dictionary <string, string> settings, string progressId, string pluginsFolder, string url, string[] command, out bool inProgress, out string msg)
{
Debug.Assert(command != null);
if (command.Length < 2)
{
inProgress = false;
msg = "invalid parameter count";
return(false);
}
if (command[0].Equals("registerTransfer", StringComparison.OrdinalIgnoreCase))
{
// bitcoin RegisterTransfer srcAddressId dstAddressId orderId amount sourceTxId
string progress = Path.Combine(pluginsFolder, $"{name}_progress{progressId}.txt");
inProgress = false;
if (command.Length != 4)
{
msg = "invalid parameter count";
return(false);
}
string gainString = command[1];
string orderId = command[2];
string sourceTxIdString = command[3];
string secret = cfg["secret"];
if (string.IsNullOrWhiteSpace(secret))
{
msg = "bitcoin.secret is not set";
return(false);
}
string rpcAddress = cfg["rpc"];
if (string.IsNullOrWhiteSpace(rpcAddress))
{
msg = "bitcoin.rpc is not set";
return(false);
}
string credential = cfg["credential"];
if (string.IsNullOrWhiteSpace(credential))
{
msg = "bitcoin.credential is not set";
return(false);
}
#if DEBUG
string confirmationsCount = cfg["confirmationsCount"];
if (int.TryParse(confirmationsCount, out int parsedCount))
{
mConfirmationsExpected = parsedCount;
}
#endif
string feeString = cfg["fee"];
if (string.IsNullOrWhiteSpace(feeString))
{
msg = "bitcoin.fee is not set";
return(false);
}
if (!int.TryParse(feeString, out int fee))
{
msg = "bitcoin.fee is not an int";
return(false);
}
var bitcoinPrivateKey = new BitcoinSecret(secret);
var network = bitcoinPrivateKey.Network;
var rpcClient = new RPCClient(credential, new Uri(rpcAddress), network);
string srcAddressId;
string dstAddressId;
string amountString;
var protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{orderId}", out msg);
if (protobuf == null)
{
msg = "failed to extract address data through RPC";
return(false);
}
if (orderId.StartsWith(RpcHelper.creditCoinNamespace + RpcHelper.dealOrderPrefix))
{
var dealOrder = DealOrder.Parser.ParseFrom(protobuf);
if (gainString.Equals("0"))
{
srcAddressId = dealOrder.SrcAddress;
dstAddressId = dealOrder.DstAddress;
}
else
{
dstAddressId = dealOrder.SrcAddress;
srcAddressId = dealOrder.DstAddress;
}
amountString = dealOrder.Amount;
}
else if (orderId.StartsWith(RpcHelper.creditCoinNamespace + RpcHelper.repaymentOrderPrefix))
{
var repaymentOrder = RepaymentOrder.Parser.ParseFrom(protobuf);
if (gainString.Equals("0"))
{
srcAddressId = repaymentOrder.SrcAddress;
dstAddressId = repaymentOrder.DstAddress;
}
else
{
dstAddressId = repaymentOrder.SrcAddress;
srcAddressId = repaymentOrder.DstAddress;
}
amountString = repaymentOrder.Amount;
}
else
{
msg = "unexpected referred order";
return(false);
}
string payTxIdHash;
uint256 payTxId;
if (File.Exists(progress))
{
Console.WriteLine("Found unfinished action, retrying...");
payTxIdHash = File.ReadAllText(progress);
if (!uint256.TryParse(payTxIdHash, out payTxId))
{
msg = "corrupted progress file";
return(false);
}
}
else
{
protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{srcAddressId}", out msg);
if (protobuf == null)
{
msg = "failed to extract address data through RPC";
return(false);
}
var srcAddress = Address.Parser.ParseFrom(protobuf);
protobuf = RpcHelper.ReadProtobuf(httpClient, $"{url}/state/{dstAddressId}", out msg);
if (protobuf == null)
{
msg = "failed to extract address data through RPC";
return(false);
}
var dstAddress = Address.Parser.ParseFrom(protobuf);
long transferAmount;
if (!long.TryParse(amountString, out transferAmount) || transferAmount <= 0)
{
msg = "Invalid amount";
return(false);
}
long gain;
if (!long.TryParse(gainString, out gain))
{
msg = "Invalid amount";
return(false);
}
if (transferAmount + gain < transferAmount)
{
msg = "Overflow";
return(false);
}
transferAmount = transferAmount + gain;
if (transferAmount < 0)
{
msg = "Invalid amount";
return(false);
}
if (transferAmount + fee < transferAmount)
{
msg = "Overflow";
return(false);
}
if (!srcAddress.Blockchain.Equals(name) || !dstAddress.Blockchain.Equals(name))
{
msg = $"bitcoin RegisterTransfer can only transfer bitcoins.\nThis source is registered for {srcAddress.Blockchain} and destination for {dstAddress.Blockchain}";
return(false);
}
var sourceAddress = bitcoinPrivateKey.GetAddress();
if (!sourceAddress.ToString().Equals(srcAddress.Value, StringComparison.OrdinalIgnoreCase))
{
msg = "The deal is for a different client";
return(false);
}
#if RELEASE
if (network != NBitcoin.Network.Main)
{
msg = "bitcoin.secret is not defined for main network";
return(false);
}
#endif
var sourceTxId = uint256.Parse(sourceTxIdString);
var transactionResponse = rpcClient.GetRawTransaction(sourceTxId);
//TODO: fix (assuming that the transaction has one output intended for the private key with the exact amount)
var receivedCoins = transactionResponse.Outputs.AsCoins();
OutPoint outPointToSpend = null;
TxOut outTxToSpend = null;
foreach (var coin in receivedCoins)
{
if (coin.TxOut.ScriptPubKey == bitcoinPrivateKey.ScriptPubKey)
{
outPointToSpend = coin.Outpoint;
outTxToSpend = coin.TxOut;
long amount = coin.Amount.Satoshi;
if (amount < transferAmount + fee)
{
msg = $"Invalid transaction - needed: {transferAmount} + {fee}, has: {amount.ToString()}";
return(false);
}
break;
}
}
if (outPointToSpend == null)
{
msg = "Invalid transaction - no outputs that the client can spend";
return(false);
}
var addressFrom = BitcoinAddress.Create(srcAddress.Value, network);
var addressTo = BitcoinAddress.Create(dstAddress.Value, network);
var message = orderId;
var bytes = Encoding.UTF8.GetBytes(message);
var bitcoinTransactionBuilder = new TransactionBuilder();
var transaction = bitcoinTransactionBuilder
.AddCoins(new Coin(outPointToSpend, outTxToSpend))
.AddKeys(bitcoinPrivateKey)
.Send(addressTo.ScriptPubKey, transferAmount)
.Send(TxNullDataTemplate.Instance.GenerateScriptPubKey(bytes), Money.Zero)
.SendFees(new Money(fee, MoneyUnit.Satoshi))
.SetChange(addressFrom.ScriptPubKey)
.BuildTransaction(true);
if (!bitcoinTransactionBuilder.Verify(transaction))
{
msg = "failed verify transaction";
return(false);
}
try
{
payTxId = rpcClient.SendRawTransaction(transaction);
}
catch (RPCException e)
{
msg = $"failed to broadcast - error: {e.RPCCode}, reason: {e.RPCCodeMessage}";
return(false);
}
if (payTxId == null)
{
msg = "failed to broadcast - unknown error";
return(false);
}
payTxIdHash = payTxId.ToString();
File.WriteAllText(progress, payTxIdHash);
}
inProgress = true;
while (true)
{
var transactionResponse = rpcClient.GetRawTransactionInfo(payTxId);
if (transactionResponse != null && transactionResponse.BlockHash != null && transactionResponse.Confirmations >= mConfirmationsExpected)
{
break;
}
Thread.Sleep(1000);
}
command = new string[] { command[0], gainString, orderId, payTxIdHash };
var tx = txBuilder.BuildTx(command, out msg);
Debug.Assert(tx != null);
Debug.Assert(msg == null);
var content = new ByteArrayContent(tx);
content.Headers.Add("Content-Type", "application/octet-stream");
msg = RpcHelper.CompleteBatch(httpClient, url, "batches", content, txid);
File.Delete(progress);
inProgress = false;
return(true);
}
else
{
inProgress = false;
msg = "Unknown command: " + command[0];
return(false);
}
}