public WalletAddr(WalletTag tag, string path, int pathIndex, string address)
{
this.Tag = tag;
this.Path = path;
this.PathIndex = pathIndex;
this.Address = address;
}
public WalletTag NewTag(string tag)
{
var tag_ = new WalletTag {
Tag = tag
};
db.WalletTags.Add(tag_);
return(tag_);
}
public WalletTag TagCreate(string tag)
{
var _tag = new WalletTag {
Tag = tag
};
WalletTags.Add(_tag);
return(_tag);
}
public BitcoinAddress AddChangeAddress(WalletTag tag)
{
// get new unused address
var keypathInfo = GetClient().GetUnused(pubkey, DerivationFeature.Change, reserve: false);
var addr = keypathInfo.ScriptPubKey.GetDestinationAddress(GetNetwork());
// check that address is not already present in the db (we used 'reserve: false')
var address = db.AddrGet(addr.ToString());
if (address != null)
{
return(addr);
}
// add to address list
address = new WalletAddr(tag, keypathInfo.KeyPath.ToString(), 0, addr.ToString());
db.WalletAddrs.Add(address);
return(addr);
}
WalletTx AddOutgoingTx(string from, TransferTransaction signedTx, WalletTag tagFor)
{
var date = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
var address = db.AddrGet(from);
var amount = asset.AmountToLong(signedTx.Amount);
var fee = asset.AmountToLong(signedTx.Fee);
logger.LogDebug("outgoing tx: amount: {0}, fee: {1}", amount, fee);
// create chain tx
var ctx = new ChainTx(signedTx.GenerateId(), date, fee, -1, 0);
ctx.NetworkStatus = new ChainTxNetworkStatus(ctx, ChainTxStatus.Unconfirmed, date, signedTx.GetBytes());
db.ChainTxs.Add(ctx);
db.ChainTxNetworkStatus.Add(ctx.NetworkStatus);
// create tx inputs
var i = new TxInput(signedTx.GenerateId(), from /*signedTx.Sender is null*/, 0, amount);
i.ChainTx = ctx;
i.WalletAddr = address;
db.TxInputs.Add(i);
i = new TxInput(signedTx.GenerateId(), from /*signedTx.Sender is null*/, 1, fee);
i.ChainTx = ctx;
i.WalletAddr = address;
db.TxInputs.Add(i);
// create tx output
var o = new TxOutput(signedTx.GenerateId(), signedTx.Recipient, 0, amount);
o.ChainTx = ctx;
db.TxOutputs.Add(o);
if (tagFor != null)
{
db.TxOutputsForTag.Add(new TxOutputForTag {
TxOutput = o, Tag = tagFor
});
}
// create wallet tx
var wtx = new WalletTx {
ChainTx = ctx, Address = address, Direction = WalletDirection.Outgoing
};
db.WalletTxs.Add(wtx);
return(wtx);
}
WalletTx AddOutgoingTx(string from, string signedTx, WalletTag tagFor)
{
var address = db.AddrGet(from);
var tx = new Transaction(signedTx.HexToByteArray());
var date = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
var fee = HexBigIntegerConvertorExtensions.HexToBigInteger(tx.GasLimit.ToHex(), false) * HexBigIntegerConvertorExtensions.HexToBigInteger(tx.GasPrice.ToHex(), false);
var amount = HexBigIntegerConvertorExtensions.HexToBigInteger(tx.Value.ToHex(), false);
logger.LogDebug("outgoing tx: amount: {0}, fee: {1}", amount, fee);
// create chain tx
var ctx = new ChainTx(tx.Hash.ToHex(true), date, fee, -1, 0);
db.ChainTxs.Add(ctx);
var networkStatus = new ChainTxNetworkStatus(ctx, ChainTxStatus.Unconfirmed, date, signedTx.HexToByteArray());
db.ChainTxNetworkStatus.Add(networkStatus);
// create tx input
var i = new TxInput(tx.Hash.ToHex(true), from, 0, amount + fee);
i.ChainTx = ctx;
i.WalletAddr = address;
db.TxInputs.Add(i);
// create tx output
var o = new TxOutput(tx.Hash.ToHex(true), tx.ReceiveAddress.ToHex(true), 0, amount);
o.ChainTx = ctx;
db.TxOutputs.Add(o);
if (tagFor != null)
{
db.TxOutputsForTag.Add(new TxOutputForTag {
TxOutput = o, Tag = tagFor
});
}
// create wallet tx
var wtx = new WalletTx {
ChainTx = ctx, Address = address, Direction = WalletDirection.Outgoing
};
db.WalletTxs.Add(wtx);
return(wtx);
}
public override WalletError Spend(string tag, string tagChange, string to, BigInteger amount, BigInteger feeMax, BigInteger feeUnit, out IEnumerable <WalletTx> wtxs, WalletTag tagFor = null, string replaceTxId = null)
{
wtxs = new List <WalletTx>();
var tagChange_ = db.TagGet(tagChange);
Util.WalletAssert(tagChange_ != null, $"Tag '{tagChange}' does not exist");
// create tx template with destination as first output
var tx = Transaction.Create(GetNetwork());
var money = new Money((ulong)amount);
var toaddr = BitcoinAddress.Create(to, GetNetwork());
var output = tx.Outputs.Add(money, toaddr);
// create list of candidate coins to spend based on (a tx we might want to replace and) UTXOs from the selected tag
var addrs = GetAddresses(tag);
var candidates = new List <CoinCandidate>();
var res = UseReplacedTxCoins(addrs, candidates, replaceTxId);
if (res != WalletError.Success)
{
return(res);
}
var utxos = GetClient().GetUTXOs(pubkey);
UseUtxoCoins(addrs, candidates, utxos);
// add inputs until we can satisfy our output
BigInteger totalInput = 0;
var toBeSpent = new List <CoinSpend>();
foreach (var candidate in candidates)
{
// add to list of coins and private keys to spend
var txin = new TxIn(candidate.Coin.Outpoint);
txin.Sequence = 0; // RBF: BIP125
tx.Inputs.Add(txin);
totalInput += candidate.Coin.Amount.Satoshi;
var privateKey = key.ExtKey.Derive(new KeyPath(candidate.Addr.Path)).PrivateKey;
toBeSpent.Add(new CoinSpend(candidate.Addr.Address, candidate.Addr, candidate.Coin, privateKey));
// check if we have enough inputs
if (totalInput >= amount)
{
// check if we have enough fee
if (GetFeeRate(tx, toBeSpent).SatoshiPerByte > (decimal)feeUnit)
{
break;
}
}
}
// check we have enough inputs
logger.LogDebug($"totalInput {totalInput}, amount: {amount}");
if (totalInput < amount)
{
logger.LogError("insufficient funds: total inputs are less then sending amount");
return(WalletError.InsufficientFunds);
}
// check fee rate
var feeRate = GetFeeRate(tx, toBeSpent);
if (feeRate.SatoshiPerByte > (decimal)feeUnit)
{
// create a change address
var changeAddress = AddChangeAddress(tagChange_);
// calculate the target fee
var currentFee = feeRate.GetFee(tx.GetVirtualSize());
var targetFee = tx.GetVirtualSize() * (long)feeUnit;
var changeOutput = new TxOut(currentFee - targetFee, changeAddress);
targetFee += output.GetSerializedSize() * (long)feeUnit;
// add the change output
changeOutput = tx.Outputs.Add(currentFee - targetFee, changeAddress);
}
else if (feeRate.SatoshiPerByte < (decimal)feeUnit)
{
logger.LogError($"insufficient funds: fee rate ({feeRate.SatoshiPerByte} sats/byte) is less then {feeUnit}");
return(WalletError.InsufficientFunds);
}
var coins = from a in toBeSpent select a.Coin;
var keys = from a in toBeSpent select a.Key;
// check coins are represented as incoming wallet txs
CheckCoinsAreInWallet(candidates, utxos.CurrentHeight);
// sign inputs (after adding a change output)
tx.Sign(keys.ToArray(), coins.ToArray());
// recalculate fee rate and check it is less then the max fee
var fee = tx.GetFee(coins.ToArray());
if (fee.Satoshi > feeMax)
{
return(WalletError.MaxFeeBreached);
}
// broadcast transaction
var result = GetClient().Broadcast(tx);
if (result.Success)
{
// log outgoing transaction
var coinOutput = new CoinOutput(to, amount);
var wtxs_ = AddOutgoingTx(tx, toBeSpent, new List <CoinOutput> {
coinOutput
}, fee.Satoshi, tagFor);
((List <WalletTx>)wtxs).AddRange(wtxs_);
return(WalletError.Success);
}
else
{
logger.LogError("{0}, {1}, {2}", result.RPCCode, result.RPCCodeMessage, result.RPCMessage);
return(WalletError.FailedBroadcast);
}
}
IEnumerable <WalletTx> AddOutgoingTx(Transaction tx, List <CoinSpend> spents, List <CoinOutput> outputs, BigInteger fee, WalletTag tagFor)
{
var txid = tx.GetHash().ToString();
logger.LogDebug("outgoing tx: outputs: {0}, fee: {1}", outputs.Select(o => o.Amount), fee);
var date = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
// create chain tx
var ctx = db.ChainTxGet(txid);
if (ctx == null)
{
ctx = new ChainTx(txid, date, fee, -1, 0);
db.ChainTxs.Add(ctx);
}
if (ctx.NetworkStatus == null)
{
var networkStatus = new ChainTxNetworkStatus(ctx, ChainTxStatus.Unconfirmed, date, tx.ToBytes());
db.ChainTxNetworkStatus.Add(networkStatus);
}
// create tx inputs
uint n = 0;
foreach (var spent in spents)
{
if (db.TxInputGet(txid, n) == null)
{
var i = new TxInput(txid, spent.From, n, spent.Coin.Amount.Satoshi);
i.ChainTx = ctx;
i.WalletAddr = spent.Addr;
db.TxInputs.Add(i);
}
n++;
}
// create tx outputs
n = 0;
foreach (var output in outputs)
{
if (db.TxOutputGet(txid, n) == null)
{
var o = new TxOutput(txid, output.To, n, output.Amount);
o.ChainTx = ctx;
db.TxOutputs.Add(o);
if (tagFor != null)
{
db.TxOutputsForTag.Add(new TxOutputForTag {
TxOutput = o, Tag = tagFor
});
}
}
n++;
}
// create wallet txs
var wtxs = new List <WalletTx>();
foreach (var spent in spents)
{
if (spent.Addr == null)
{
continue;
}
var wtx = db.TxGet(spent.Addr, ctx, WalletDirection.Outgoing);
if (wtx == null)
{
wtx = new WalletTx {
ChainTx = ctx, Address = spent.Addr, Direction = WalletDirection.Outgoing, State = WalletTxState.None
};
db.WalletTxs.Add(wtx);
}
wtxs.Add(wtx);
}
return(wtxs);
}
public WalletPendingSpend RegisterPendingSpend(string tag, string tagChange, string to, BigInteger amount, WalletTag tagFor = null)
{
if (!ValidateAddress(to))
{
return(null);
}
var spendCode = Utils.CreateDepositCode(allowLetters: true);
while (db.PendingSpendGet(spendCode) != null)
{
spendCode = Utils.CreateDepositCode(allowLetters: true);
}
var tag_ = db.TagGet(tag);
Util.WalletAssert(tag_ != null, $"Tag '{tag}' does not exist");
var tagChange_ = db.TagGet(tagChange);
Util.WalletAssert(tagChange_ != null, $"Tag '{tagChange}' does not exist");
var date = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
var spend = new WalletPendingSpend {
SpendCode = spendCode, Date = date, State = PendingSpendState.Pending, Tag = tag_, TagChange = tagChange_, To = to, Amount = amount
};
spend.TagFor = tagFor;
db.WalletPendingSpends.Add(spend);
if (tagFor != null)
{
db.PendingSpendsForTag.Add(new PendingSpendForTag {
PendingSpend = spend, Tag = tagFor
});
}
return(spend);
}
public abstract WalletError Spend(string tag, string tagChange, string to, BigInteger amount, BigInteger feeMax, BigInteger feeUnit, out IEnumerable <WalletTx> wtxs, WalletTag tagOnBehalfOf = null, string ReplaceTxId = null);
public override WalletError Spend(string tag, string tagChange, string to, BigInteger amount, BigInteger feeMax, BigInteger feeUnit, out IEnumerable <WalletTx> wtxs, WalletTag tagFor = null,
string replaceTxId = null /*not applicable to eth*/)
{
wtxs = new List <WalletTx>();
// get gas price
//var gasPriceTask = web3.Eth.GasPrice.SendRequestAsync();
//gasPriceTask.Wait();
//var gasPrice = gasPriceTask.Result.Value;
var gasPrice = feeUnit;
// create spend transaction from accounts
var accts = GetAddresses(tag);
Tuple <string, string> signedSpendTx;
//TODO: check gas price, and/or allow custom setting (max total wei too?)
var res = CreateSpendTx(accts, to, amount, gasPrice, TX_GAS, feeMax, out signedSpendTx);
if (res == WalletError.Success)
{
// send the raw signed transaction and get the txid
try
{
var sendTxTask = web3.Eth.Transactions.SendRawTransaction.SendRequestAsync(signedSpendTx.Item2);
sendTxTask.Wait();
var txid = sendTxTask.Result;
// add to wallet data
var wtx = AddOutgoingTx(signedSpendTx.Item1, signedSpendTx.Item2, tagFor);
((List <WalletTx>)wtxs).Add(wtx);
}
catch (Exception ex)
{
logger.LogError("{0}", ex);
return(WalletError.FailedBroadcast);
}
}
return(res);
}
public override WalletError Spend(string tag, string tagChange, string to, BigInteger amount, BigInteger feeMax, BigInteger feeUnit, out IEnumerable <WalletTx> wtxs, WalletTag tagFor = null,
string replaceTxId = null /*not applicable to waves*/)
{
wtxs = new List <WalletTx>();
// create spend transaction from accounts
var accts = GetAddresses(tag);
Tuple <string, TransferTransaction> signedSpendTx;
var res = CreateSpendTx(accts, to, amount, feeUnit, feeMax, out signedSpendTx);
if (res == WalletError.Success)
{
// send the raw signed transaction and get the txid
try
{
var output = node.Broadcast(signedSpendTx.Item2);
logger.LogDebug(output);
var txid = signedSpendTx.Item2.GenerateId();
}
catch (System.Net.WebException ex)
{
logger.LogError(ex, "error broadcasting tx");
var resp = new StreamReader(ex.Response.GetResponseStream()).ReadToEnd();
dynamic obj = JsonConvert.DeserializeObject(resp);
if (obj != null)
{
logger.LogError($"message: {obj.message}");
}
return(WalletError.PartialBroadcast);
}
// add to wallet data
var wtx = AddOutgoingTx(signedSpendTx.Item1, signedSpendTx.Item2, tagFor);
((List <WalletTx>)wtxs).Add(wtx);
}
return(res);
}
