/// <summary>
/// Adds the given pending transactions to the transaction database.
/// </summary>
/// <returns>Result of the task.</returns>
public AddPendingTransactionsResult AddPendingTransactions(IList <PendingTransaction> transactions)
{
if (transactions.Count == 0)
{
return(AddPendingTransactionsResult.Empty);
}
for (int i = 0, c = transactions.Count; i < c; ++i)
{
var ptx = transactions[i];
var tx = ptx.Tx;
if (tx.Id != tx.GetId())
{
return(AddPendingTransactionsResult.HardRejected);
}
if (transactionDb.HasTransaction(tx.Id))
{
continue;
}
if (transactionDb.GetPendingTransaction(tx.Id) != null)
{
continue;
}
long totalInAmount = 0;
long totalOutAmount = 0;
bool isIgnored = false;
for (int j = 0, n = tx.Inputs.Count; j < n; ++j)
{
var txIn = tx.Inputs[j];
if (string.IsNullOrEmpty(txIn.TxId) ||
txIn.TxOutIndex < 0 ||
string.IsNullOrEmpty(txIn.Signature))
{
return(AddPendingTransactionsResult.HardRejected);
}
var refTx = transactionDb.GetTransaction(txIn.TxId);
if (refTx is null)
{
isIgnored = true;
break;
}
if (txIn.TxOutIndex >= refTx.Outputs.Count)
{
return(AddPendingTransactionsResult.HardRejected);
}
var refTxOut = refTx.Outputs[txIn.TxOutIndex];
var(signature, publicKey) = AddressUtils.SignatureAndPublicKeyFromTxInSignature(txIn.Signature);
if (AddressUtils.AddressFromPublicKey(publicKey) != refTxOut.Address)
{
return(AddPendingTransactionsResult.HardRejected);
}
if (EllipticCurve.Ecdsa.verify(tx.Id, signature, publicKey) == false)
{
return(AddPendingTransactionsResult.HardRejected);
}
totalInAmount += refTxOut.AmountInNekoshi;
}
if (isIgnored)
{
continue;
}
for (int j = 0, n = tx.Outputs.Count; j < n; ++j)
{
var txOut = tx.Outputs[j];
if (string.IsNullOrEmpty(txOut.Address) ||
txOut.AmountInNekoshi <= 0)
{
return(AddPendingTransactionsResult.HardRejected);
}
totalOutAmount += txOut.AmountInNekoshi;
}
if (totalInAmount != totalOutAmount + Config.FeeNekoshiPerTx)
{
return(AddPendingTransactionsResult.HardRejected);
}
}
for (int i = 0, c = transactions.Count; i < c; ++i)
{
var ptx = transactions[i];
transactionDb.AddPendingTransaction(ptx, needSave: false);
}
transactionDb.Save();
return(AddPendingTransactionsResult.Added);
}
