private static Transaction[] GenerateTxsForRefunds(IGrouping <Address, DepositDetails> depositGroup, DevKeyStoreWallet wallet)
{
Console.WriteLine();
Console.Write($"Provide nonce for {depositGroup.Key}: ");
int nonce = int.Parse(Console.ReadLine());
Console.Write($"Provide address to send the refund to: ");
string hexAddress = Console.ReadLine();
Address refundTo = new Address(hexAddress);
SecureString securedPassword = ConsoleUtils.ReadSecret("Provide password: "******"Password has been accepted.");
Console.WriteLine();
Console.WriteLine($"Great, will generate refund transactions for deposits of {depositGroup.Key} starting with nonce {nonce}. ETH/DAI will be sent to {refundTo}.");
List <Transaction> transactions = new List <Transaction>(depositGroup.Count());
foreach (DepositDetails depositDetails in depositGroup)
{
Deposit deposit = depositDetails.Deposit;
RefundClaim refundClaim = new RefundClaim(deposit.Id, depositDetails.DataAsset.Id, deposit.Units,
deposit.Value, deposit.ExpiryTime, depositDetails.Pepper, depositDetails.DataAsset.Provider.Address, refundTo);
UInt256 gasPrice = 20.GWei();
AbiEncoder abiEncoder = new AbiEncoder();
byte[] txData = abiEncoder.Encode(AbiEncodingStyle.IncludeSignature, ContractData.ClaimRefundSig, depositDetails.DataAsset.Id, refundClaim.Units, refundClaim.Value, refundClaim.ExpiryTime, refundClaim.Pepper, refundClaim.Provider, depositDetails.Consumer);
Transaction transaction = new Transaction();
transaction.Value = 0;
transaction.Data = txData;
transaction.To = new Address("0xb1AD03b75bD9E5AB89968D7a37d99F9dd220796D");
transaction.SenderAddress = depositDetails.Consumer;
transaction.GasLimit = 100000;
transaction.GasPrice = gasPrice;
transaction.Nonce = (UInt256)nonce++;
wallet.Sign(transaction, ChainId.Mainnet);
EthereumEcdsa ecdsa = new EthereumEcdsa(ChainId.Mainnet, LimboLogs.Instance);
Address recoveredAddress = ecdsa.RecoverAddress(transaction);
if (recoveredAddress != transaction.SenderAddress)
{
Console.WriteLine("Signature failure");
return(new Transaction[0]);
}
transactions.Add(transaction);
}
return(transactions.ToArray());
}
Console.WriteLine("Incorrect password.");
return(new Transaction[0]);
}
public void Sign_and_recover()
{
EthereumEcdsa ethereumEcdsa = new EthereumEcdsa(ChainId.Olympic, LimboLogs.Instance);
Keccak message = Keccak.Compute("Test message");
PrivateKey privateKey = Build.A.PrivateKey.TestObject;
Signature signature = ethereumEcdsa.Sign(privateKey, message);
Assert.AreEqual(privateKey.Address, ethereumEcdsa.RecoverAddress(signature, message));
}
public void Test_eip155_for_the_first_ropsten_transaction()
{
Transaction tx = Rlp.Decode <Transaction>(new Rlp(Bytes.FromHexString("0xf85f808082520894353535353535353535353535353535353535353580801ca08d24b906be2d91a0bf2168862726991cc408cddf94cb087b392ce992573be891a077964b4e55a5c8ec7b85087d619c641c06def33ab052331337ca9efcd6b82aef")));
Assert.AreEqual(new Keccak("0x5fd225549ed5c587c843e04578bdd4240fc0d7ab61f8e9faa37e84ec8dc8766d"), tx.Hash, "hash");
EthereumEcdsa ecdsa = new EthereumEcdsa(ChainId.Ropsten, LimboLogs.Instance);
Address from = ecdsa.RecoverAddress(tx);
Assert.AreEqual(new Address("0x874b54a8bd152966d63f706bae1ffeb0411921e5"), from, "from");
}
public void Sign_and_recover()
{
EthereumEcdsa ethereumEcdsa = new EthereumEcdsa(OlympicSpecProvider.Instance, NullLogManager.Instance);
Keccak message = Keccak.Compute("Test message");
PrivateKey privateKey = Build.A.PrivateKey.TestObject;
Signature signature = ethereumEcdsa.Sign(privateKey, message);
Assert.AreEqual(privateKey.Address, ethereumEcdsa.RecoverAddress(signature, message));
}
public void Signature_test_olympic(uint blockNumber)
{
EthereumEcdsa ecdsa = new EthereumEcdsa(OlympicSpecProvider.Instance, LimboLogs.Instance);
PrivateKey key = Build.A.PrivateKey.TestObject;
Transaction tx = Build.A.Transaction.TestObject;
ecdsa.Sign(key, tx, blockNumber);
Address address = ecdsa.RecoverAddress(tx, blockNumber);
Assert.AreEqual(key.Address, address);
}
private bool TxMatchesAddresses(Transaction tx, bool validateChainId)
{
Address?senderAddress = tx.SenderAddress;
if (senderAddress == null && tx.Signature != null)
{
senderAddress = _ecdsa.RecoverAddress(tx, !validateChainId);
}
return((_fromAddresses == null || _fromAddresses.Contains(senderAddress)) &&
(_toAddresses == null || _toAddresses.Contains(tx.To)));
}
public void Signature_test_olympic(bool isEip155Enabled)
{
EthereumEcdsa ecdsa = new EthereumEcdsa(ChainId.Mainnet, LimboLogs.Instance);
PrivateKey key = Build.A.PrivateKey.TestObject;
Transaction tx = Build.A.Transaction.TestObject;
ecdsa.Sign(key, tx, isEip155Enabled);
Address address = ecdsa.RecoverAddress(tx);
Assert.AreEqual(key.Address, address);
}
public void Sign_goerli()
{
EthereumEcdsa ecdsa = new EthereumEcdsa(ChainId.Goerli, LimboLogs.Instance);
PrivateKey key = Build.A.PrivateKey.TestObject;
Transaction tx = Build.A.Transaction.TestObject;
ecdsa.Sign(key, tx, true);
Address address = ecdsa.RecoverAddress(tx);
Assert.AreEqual(key.Address, address);
}
public void Signature_test_ropsten(bool eip155)
{
EthereumEcdsa ecdsa = new EthereumEcdsa(ChainId.Ropsten, LimboLogs.Instance);
PrivateKey key = Build.A.PrivateKey.TestObject;
Transaction tx = Build.A.Transaction.TestObject;
ecdsa.Sign(key, tx, eip155);
Address address = ecdsa.RecoverAddress(tx);
Assert.AreEqual(key.Address, address);
}
public void Recover_kovan([Values(false, true)] bool eip155)
{
EthereumEcdsa singEcdsa = new EthereumEcdsa(ChainId.Mainnet, LimboLogs.Instance);
PrivateKey key = Build.A.PrivateKey.TestObject;
Transaction tx = Build.A.Transaction.TestObject;
singEcdsa.Sign(key, tx, eip155);
EthereumEcdsa recoverEcdsa = new EthereumEcdsa(ChainId.Kovan, LimboLogs.Instance);
Address address = recoverEcdsa.RecoverAddress(tx, true);
Assert.AreEqual(key.Address, address);
}
public async Task seal_can_recover_address()
{
_auRaStepCalculator.CurrentStep.Returns(11);
_validSealerStrategy.IsValidSealer(Arg.Any <IList <Address> >(), _address, 11).Returns(true);
var block = Build.A.Block.WithHeader(Build.A.BlockHeader.WithBeneficiary(_address).WithAura(11, null).TestObject).TestObject;
block = await _auRaSealer.SealBlock(block, CancellationToken.None);
var ecdsa = new EthereumEcdsa(ChainId.Morden, LimboLogs.Instance);
var signature = new Signature(block.Header.AuRaSignature);
signature.V += Signature.VOffset;
var recoveredAddress = ecdsa.RecoverAddress(signature, block.Header.CalculateHash(RlpBehaviors.ForSealing));
recoveredAddress.Should().Be(_address);
}
public async Task seal_can_recover_address()
{
_auRaStepCalculator.CurrentStep.Returns(11);
_auRaValidator.IsValidSealer(_address, 11).Returns(true);
var block = Build.A.Block.WithHeader(Build.A.BlockHeader.WithBeneficiary(_address).WithAura(11, null).TestObject).TestObject;
block = await _auRaSealer.SealBlock(block, CancellationToken.None);
var ecdsa = new EthereumEcdsa(new MordenSpecProvider(), NullLogManager.Instance);
var signature = new Signature(block.Header.AuRaSignature);
signature.V += Signature.VOffset;
var recoveredAddress = ecdsa.RecoverAddress(signature, BlockHeader.CalculateHash(block.Header, RlpBehaviors.ForSealing));
recoveredAddress.Should().Be(_address);
}
public (byte[], bool) Run(byte[] inputData)
{
Metrics.EcRecoverPrecompile++;
inputData ??= Array.Empty <byte>();
Span <byte> inputDataSpan = stackalloc byte[128];
inputData.AsSpan(0, Math.Min(128, inputData.Length))
.CopyTo(inputDataSpan.Slice(0, Math.Min(128, inputData.Length)));
Keccak hash = new Keccak(inputDataSpan.Slice(0, 32).ToArray());
Span <byte> vBytes = inputDataSpan.Slice(32, 32);
Span <byte> r = inputDataSpan.Slice(64, 32);
Span <byte> s = inputDataSpan.Slice(96, 32);
// TEST: CALLCODEEcrecoverV_prefixedf0_d0g0v0
// TEST: CALLCODEEcrecoverV_prefixedf0_d1g0v0
if (!Bytes.AreEqual(_zero31, vBytes.Slice(0, 31)))
{
return(Array.Empty <byte>(), true);
}
byte v = vBytes[31];
if (v != 27 && v != 28)
{
return(Array.Empty <byte>(), true);
}
Signature signature = new Signature(r, s, v);
Address recovered = _ecdsa.RecoverAddress(signature, hash);
if (recovered == null)
{
return(Array.Empty <byte>(), true);
}
byte[] result = recovered.Bytes;
if (result.Length != 32)
{
result = result.PadLeft(32);
}
// TODO: change recovery code to return bytes
return(result, true);
}
public void Can_sign_on_networks_with_chain_id(DevWalletType walletType, int chainId)
{
EthereumEcdsa ecdsa = new EthereumEcdsa(chainId, LimboLogs.Instance);
IWallet wallet = SetupWallet(walletType);
for (int i = 1; i <= (walletType == DevWalletType.Memory ? 10 : 3); i++)
{
Address signerAddress = wallet.GetAccounts()[0];
Transaction tx = new Transaction();
tx.SenderAddress = signerAddress;
wallet.Sign(tx, chainId);
Address recovered = ecdsa.RecoverAddress(tx);
Assert.AreEqual(signerAddress, recovered, $"{i}");
Assert.AreEqual(chainId, tx.Signature.ChainId, "chainId");
}
}
public void Can_sign_on_networks_with_chain_id(DevWalletType walletType)
{
const int networkId = 40000;
EthereumEcdsa ecdsa = new EthereumEcdsa(new SingleReleaseSpecProvider(Latest.Release, networkId), NullLogManager.Instance);
IWallet wallet = SetupWallet(walletType);
for (int i = 1; i <= (walletType == DevWalletType.Memory ? 10 : 3); i++)
{
Address signerAddress = wallet.GetAccounts()[0];
Transaction tx = new Transaction();
tx.SenderAddress = signerAddress;
wallet.Sign(tx, networkId);
Address recovered = ecdsa.RecoverAddress(tx, networkId);
Assert.AreEqual(signerAddress, recovered, $"{i}");
Assert.AreEqual(networkId, tx.Signature.ChainId, "chainId");
}
}
protected override Keccak Handle(byte[] transaction, IWeb3EthApi api)
{
PublicEntry publicEntry;
try
{
Transaction tx = Rlp.Decode <Transaction>(transaction);
EthereumEcdsa ecdsa = new EthereumEcdsa(MainnetSpecProvider.Instance, LimboLogs.Instance);
tx.SenderAddress = ecdsa.RecoverAddress(tx, MainnetSpecProvider.IstanbulBlockNumber);
tx.Timestamp = (UInt256)DateTimeOffset.UtcNow.ToUnixTimeSeconds();
publicEntry = new PublicEntry
{
Data = (tx.Data ?? tx.Init).ToByteString(),
GasLimit = (ulong)tx.GasLimit,
GasPrice = tx.GasPrice.ToUint256ByteString(),
Nonce = (ulong)tx.Nonce,
SenderAddress = tx.SenderAddress.Bytes.ToByteString(),
ReceiverAddress = tx.To?.Bytes.ToByteString() ?? ByteString.Empty,
Amount = tx.Value.ToUint256ByteString(),
Signature = new Protocol.Cryptography.Signature
{
RawBytes = ByteString.CopyFrom((byte)1)
}
};
}
catch
{
try
{
TransactionBroadcast transactionBroadcast = TransactionBroadcast.Parser.ParseFrom(transaction);
publicEntry = transactionBroadcast.PublicEntry;
}
catch (Exception)
{
throw new InvalidDataException($"Transaction data could not be deserialized into a {nameof(PublicEntry)}");
}
}
return(api.SendTransaction(publicEntry));
}
public (byte[], bool) Run(byte[] inputData)
{
Metrics.EcRecoverPrecompile++;
inputData = (inputData ?? Bytes.Empty).PadRight(128);
Keccak hash = new Keccak(inputData.Slice(0, 32));
byte[] vBytes = inputData.Slice(32, 32);
byte[] r = inputData.Slice(64, 32);
byte[] s = inputData.Slice(96, 32);
// TEST: CALLCODEEcrecoverV_prefixedf0_d0g0v0
// TEST: CALLCODEEcrecoverV_prefixedf0_d1g0v0
for (int i = 0; i < 31; i++)
{
if (vBytes[i] != 0)
{
return(Bytes.Empty, true);
}
}
byte v = vBytes[31];
if (v != 27 && v != 28)
{
return(Bytes.Empty, true);
}
Signature signature = new Signature(r, s, v);
Address recovered = _ecdsa.RecoverAddress(signature, hash);
if (recovered == null)
{
return(Bytes.Empty, true);
}
return(recovered.Bytes.PadLeft(32), true); // TODO: change recovery code to return bytes?
}
private void Execute(Transaction transaction, BlockHeader block, ITxTracer txTracer,
ExecutionOptions executionOptions)
{
bool eip658NotEnabled = !_specProvider.GetSpec(block.Number).IsEip658Enabled;
// restore is CallAndRestore - previous call, we will restore state after the execution
bool restore = (executionOptions & ExecutionOptions.Restore) == ExecutionOptions.Restore;
bool noValidation = (executionOptions & ExecutionOptions.NoValidation) == ExecutionOptions.NoValidation;
// commit - is for standard execute, we will commit thee state after execution
bool commit = (executionOptions & ExecutionOptions.Commit) == ExecutionOptions.Commit || eip658NotEnabled;
//!commit - is for build up during block production, we won't commit state after each transaction to support rollbacks
//we commit only after all block is constructed
bool notSystemTransaction = !transaction.IsSystem();
bool deleteCallerAccount = false;
IReleaseSpec spec = _specProvider.GetSpec(block.Number);
if (!notSystemTransaction)
{
spec = new SystemTransactionReleaseSpec(spec);
}
UInt256 value = transaction.Value;
if (!transaction.TryCalculatePremiumPerGas(block.BaseFeePerGas, out UInt256 premiumPerGas) && !noValidation)
{
TraceLogInvalidTx(transaction, "MINER_PREMIUM_IS_NEGATIVE");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "miner premium is negative");
return;
}
UInt256 effectiveGasPrice =
transaction.CalculateEffectiveGasPrice(spec.IsEip1559Enabled, block.BaseFeePerGas);
long gasLimit = transaction.GasLimit;
byte[] machineCode = transaction.IsContractCreation ? transaction.Data : null;
byte[] data = transaction.IsMessageCall ? transaction.Data : Array.Empty <byte>();
Address?caller = transaction.SenderAddress;
if (_logger.IsTrace)
{
_logger.Trace($"Executing tx {transaction.Hash}");
}
if (caller is null)
{
TraceLogInvalidTx(transaction, "SENDER_NOT_SPECIFIED");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "sender not specified");
return;
}
if (!noValidation && _stateProvider.IsInvalidContractSender(spec, caller))
{
TraceLogInvalidTx(transaction, "SENDER_IS_CONTRACT");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "sender has deployed code");
return;
}
long intrinsicGas = IntrinsicGasCalculator.Calculate(transaction, spec);
if (_logger.IsTrace)
{
_logger.Trace($"Intrinsic gas calculated for {transaction.Hash}: " + intrinsicGas);
}
if (notSystemTransaction)
{
if (gasLimit < intrinsicGas)
{
TraceLogInvalidTx(transaction, $"GAS_LIMIT_BELOW_INTRINSIC_GAS {gasLimit} < {intrinsicGas}");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "gas limit below intrinsic gas");
return;
}
if (!noValidation && gasLimit > block.GasLimit - block.GasUsed)
{
TraceLogInvalidTx(transaction,
$"BLOCK_GAS_LIMIT_EXCEEDED {gasLimit} > {block.GasLimit} - {block.GasUsed}");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "block gas limit exceeded");
return;
}
}
if (!_stateProvider.AccountExists(caller))
{
// hacky fix for the potential recovery issue
if (transaction.Signature != null)
{
transaction.SenderAddress = _ecdsa.RecoverAddress(transaction, !spec.ValidateChainId);
}
if (caller != transaction.SenderAddress)
{
if (_logger.IsWarn)
{
_logger.Warn(
$"TX recovery issue fixed - tx was coming with sender {caller} and the now it recovers to {transaction.SenderAddress}");
}
caller = transaction.SenderAddress;
}
else
{
TraceLogInvalidTx(transaction, $"SENDER_ACCOUNT_DOES_NOT_EXIST {caller}");
if (!commit || noValidation || effectiveGasPrice == UInt256.Zero)
{
deleteCallerAccount = !commit || restore;
_stateProvider.CreateAccount(caller, UInt256.Zero);
}
}
if (caller is null)
{
throw new InvalidDataException(
$"Failed to recover sender address on tx {transaction.Hash} when previously recovered sender account did not exist.");
}
}
UInt256 senderReservedGasPayment = noValidation ? UInt256.Zero : (ulong)gasLimit * effectiveGasPrice;
if (notSystemTransaction)
{
UInt256 senderBalance = _stateProvider.GetBalance(caller);
if (!noValidation && ((ulong)intrinsicGas * effectiveGasPrice + value > senderBalance ||
senderReservedGasPayment + value > senderBalance))
{
TraceLogInvalidTx(transaction,
$"INSUFFICIENT_SENDER_BALANCE: ({caller})_BALANCE = {senderBalance}");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "insufficient sender balance");
return;
}
if (!noValidation && spec.IsEip1559Enabled && !transaction.IsFree() &&
senderBalance < (UInt256)transaction.GasLimit * transaction.MaxFeePerGas + value)
{
TraceLogInvalidTx(transaction,
$"INSUFFICIENT_MAX_FEE_PER_GAS_FOR_SENDER_BALANCE: ({caller})_BALANCE = {senderBalance}, MAX_FEE_PER_GAS: {transaction.MaxFeePerGas}");
QuickFail(transaction, block, txTracer, eip658NotEnabled,
"insufficient MaxFeePerGas for sender balance");
return;
}
if (transaction.Nonce != _stateProvider.GetNonce(caller))
{
TraceLogInvalidTx(transaction,
$"WRONG_TRANSACTION_NONCE: {transaction.Nonce} (expected {_stateProvider.GetNonce(caller)})");
QuickFail(transaction, block, txTracer, eip658NotEnabled, "wrong transaction nonce");
return;
}
_stateProvider.IncrementNonce(caller);
}
_stateProvider.SubtractFromBalance(caller, senderReservedGasPayment, spec);
if (commit)
{
_stateProvider.Commit(spec, txTracer.IsTracingState ? txTracer : NullTxTracer.Instance);
}
long unspentGas = gasLimit - intrinsicGas;
long spentGas = gasLimit;
Snapshot snapshot = _worldState.TakeSnapshot();
_stateProvider.SubtractFromBalance(caller, value, spec);
byte statusCode = StatusCode.Failure;
TransactionSubstate substate = null;
Address?recipientOrNull = null;
try
{
Address?recipient =
transaction.GetRecipient(transaction.IsContractCreation ? _stateProvider.GetNonce(caller) : 0);
if (transaction.IsContractCreation)
{
// if transaction is a contract creation then recipient address is the contract deployment address
Address contractAddress = recipient;
PrepareAccountForContractDeployment(contractAddress !, spec);
}
if (recipient == null)
{
// this transaction is not a contract creation so it should have the recipient known and not null
throw new InvalidDataException("Recipient has not been resolved properly before tx execution");
}
recipientOrNull = recipient;
ExecutionEnvironment env = new();
env.TxExecutionContext = new TxExecutionContext(block, caller, effectiveGasPrice);
env.Value = value;
env.TransferValue = value;
env.Caller = caller;
env.CodeSource = recipient;
env.ExecutingAccount = recipient;
env.InputData = data ?? Array.Empty <byte>();
env.CodeInfo = machineCode == null
? _virtualMachine.GetCachedCodeInfo(_worldState, recipient, spec)
: new CodeInfo(machineCode);
ExecutionType executionType =
transaction.IsContractCreation ? ExecutionType.Create : ExecutionType.Call;
using (EvmState state =
new(unspentGas, env, executionType, true, snapshot, false))
{
if (spec.UseTxAccessLists)
{
state.WarmUp(transaction.AccessList); // eip-2930
}
if (spec.UseHotAndColdStorage)
{
state.WarmUp(caller); // eip-2929
state.WarmUp(recipient); // eip-2929
}
substate = _virtualMachine.Run(state, _worldState, txTracer);
unspentGas = state.GasAvailable;
if (txTracer.IsTracingAccess)
{
txTracer.ReportAccess(state.AccessedAddresses, state.AccessedStorageCells);
}
}
if (substate.ShouldRevert || substate.IsError)
{
if (_logger.IsTrace)
{
_logger.Trace("Restoring state from before transaction");
}
_worldState.Restore(snapshot);
}
else
{
// tks: there is similar code fo contract creation from init and from CREATE
// this may lead to inconsistencies (however it is tested extensively in blockchain tests)
if (transaction.IsContractCreation)
{
long codeDepositGasCost = CodeDepositHandler.CalculateCost(substate.Output.Length, spec);
if (unspentGas < codeDepositGasCost && spec.ChargeForTopLevelCreate)
{
throw new OutOfGasException();
}
if (CodeDepositHandler.CodeIsInvalid(spec, substate.Output))
{
throw new InvalidCodeException();
}
if (unspentGas >= codeDepositGasCost)
{
Keccak codeHash = _stateProvider.UpdateCode(substate.Output);
_stateProvider.UpdateCodeHash(recipient, codeHash, spec);
unspentGas -= codeDepositGasCost;
}
}
foreach (Address toBeDestroyed in substate.DestroyList)
{
if (_logger.IsTrace)
{
_logger.Trace($"Destroying account {toBeDestroyed}");
}
_storageProvider.ClearStorage(toBeDestroyed);
_stateProvider.DeleteAccount(toBeDestroyed);
if (txTracer.IsTracingRefunds)
{
txTracer.ReportRefund(RefundOf.Destroy(spec.IsEip3529Enabled));
}
}
statusCode = StatusCode.Success;
}
spentGas = Refund(gasLimit, unspentGas, substate, caller, effectiveGasPrice, spec);
}
catch (Exception ex) when(
ex is EvmException || ex is OverflowException) // TODO: OverflowException? still needed? hope not
{
if (_logger.IsTrace)
{
_logger.Trace($"EVM EXCEPTION: {ex.GetType().Name}");
}
_worldState.Restore(snapshot);
}
if (_logger.IsTrace)
{
_logger.Trace("Gas spent: " + spentGas);
}
Address gasBeneficiary = block.GasBeneficiary;
bool gasBeneficiaryNotDestroyed = substate?.DestroyList.Contains(gasBeneficiary) != true;
if (statusCode == StatusCode.Failure || gasBeneficiaryNotDestroyed)
{
if (notSystemTransaction)
{
UInt256 fees = (ulong)spentGas * premiumPerGas;
if (_stateProvider.AccountExists(gasBeneficiary))
{
_stateProvider.AddToBalance(gasBeneficiary, fees, spec);
}
else
{
_stateProvider.CreateAccount(gasBeneficiary, fees);
}
if (!transaction.IsFree() && spec.IsEip1559Enabled && spec.Eip1559FeeCollector is not null)
{
UInt256 burntFees = (ulong)spentGas * block.BaseFeePerGas;
if (!burntFees.IsZero)
{
if (_stateProvider.AccountExists(spec.Eip1559FeeCollector))
{
_stateProvider.AddToBalance(spec.Eip1559FeeCollector, burntFees, spec);
}
else
{
_stateProvider.CreateAccount(spec.Eip1559FeeCollector, burntFees);
}
}
}
}
}
if (restore)
{
_storageProvider.Reset();
_stateProvider.Reset();
if (deleteCallerAccount)
{
_stateProvider.DeleteAccount(caller);
}
else
{
_stateProvider.AddToBalance(caller, senderReservedGasPayment, spec);
if (notSystemTransaction)
{
_stateProvider.DecrementNonce(caller);
}
_stateProvider.Commit(spec);
}
}
else if (commit)
{
_storageProvider.Commit(txTracer.IsTracingState ? txTracer : NullStorageTracer.Instance);
_stateProvider.Commit(spec, txTracer.IsTracingState ? txTracer : NullStateTracer.Instance);
}
if (!noValidation && notSystemTransaction)
{
block.GasUsed += spentGas;
}
if (txTracer.IsTracingReceipt)
{
Keccak stateRoot = null;
if (eip658NotEnabled)
{
_stateProvider.RecalculateStateRoot();
stateRoot = _stateProvider.StateRoot;
}
if (statusCode == StatusCode.Failure)
{
txTracer.MarkAsFailed(recipientOrNull, spentGas,
(substate?.ShouldRevert ?? false) ? substate.Output.ToArray() : Array.Empty <byte>(),
substate?.Error, stateRoot);
}
else
{
txTracer.MarkAsSuccess(recipientOrNull, spentGas, substate.Output.ToArray(),
substate.Logs.Any() ? substate.Logs.ToArray() : Array.Empty <LogEntry>(), stateRoot);
}
}
}
private void Execute(Transaction transaction, BlockHeader block, ITxTracer txTracer, bool isCall)
{
bool notSystemTransaction = !transaction.IsSystem();
bool wasSenderAccountCreatedInsideACall = false;
IReleaseSpec spec = _specProvider.GetSpec(block.Number);
if (!notSystemTransaction)
{
spec = new SystemTransactionReleaseSpec(spec);
}
Address recipient = transaction.To;
UInt256 value = transaction.Value;
UInt256 gasPrice = transaction.GasPrice;
long gasLimit = transaction.GasLimit;
byte[] machineCode = transaction.Init;
byte[] data = transaction.Data ?? Array.Empty <byte>();
Address sender = transaction.SenderAddress;
if (_logger.IsTrace)
{
_logger.Trace($"Executing tx {transaction.Hash}");
}
if (sender == null)
{
TraceLogInvalidTx(transaction, "SENDER_NOT_SPECIFIED");
QuickFail(transaction, block, txTracer, "sender not specified");
return;
}
long intrinsicGas = _intrinsicGasCalculator.Calculate(transaction, spec);
if (_logger.IsTrace)
{
_logger.Trace($"Intrinsic gas calculated for {transaction.Hash}: " + intrinsicGas);
}
if (notSystemTransaction)
{
if (gasLimit < intrinsicGas)
{
TraceLogInvalidTx(transaction, $"GAS_LIMIT_BELOW_INTRINSIC_GAS {gasLimit} < {intrinsicGas}");
QuickFail(transaction, block, txTracer, "gas limit below intrinsic gas");
return;
}
if (!isCall && gasLimit > block.GasLimit - block.GasUsed)
{
TraceLogInvalidTx(transaction,
$"BLOCK_GAS_LIMIT_EXCEEDED {gasLimit} > {block.GasLimit} - {block.GasUsed}");
QuickFail(transaction, block, txTracer, "block gas limit exceeded");
return;
}
}
if (!_stateProvider.AccountExists(sender))
{
// hacky fix for the potential recovery issue
if (transaction.Signature != null)
{
transaction.SenderAddress = _ecdsa.RecoverAddress(transaction, !spec.ValidateChainId);
}
if (sender != transaction.SenderAddress)
{
if (_logger.IsWarn)
{
_logger.Warn($"TX recovery issue fixed - tx was coming with sender {sender} and the now it recovers to {transaction.SenderAddress}");
}
sender = transaction.SenderAddress;
}
else
{
TraceLogInvalidTx(transaction, $"SENDER_ACCOUNT_DOES_NOT_EXIST {sender}");
if (isCall || gasPrice == UInt256.Zero)
{
wasSenderAccountCreatedInsideACall = isCall;
_stateProvider.CreateAccount(sender, UInt256.Zero);
}
}
}
if (notSystemTransaction)
{
UInt256 senderBalance = _stateProvider.GetBalance(sender);
if (!isCall && (ulong)intrinsicGas * gasPrice + value > senderBalance)
{
TraceLogInvalidTx(transaction, $"INSUFFICIENT_SENDER_BALANCE: ({sender})_BALANCE = {senderBalance}");
QuickFail(transaction, block, txTracer, "insufficient sender balance");
return;
}
if (transaction.Nonce != _stateProvider.GetNonce(sender))
{
TraceLogInvalidTx(transaction, $"WRONG_TRANSACTION_NONCE: {transaction.Nonce} (expected {_stateProvider.GetNonce(sender)})");
QuickFail(transaction, block, txTracer, "wrong transaction nonce");
return;
}
_stateProvider.IncrementNonce(sender);
}
UInt256 senderReservedGasPayment = isCall ? UInt256.Zero : (ulong)gasLimit * gasPrice;
_stateProvider.SubtractFromBalance(sender, senderReservedGasPayment, spec);
_stateProvider.Commit(spec, txTracer.IsTracingState ? txTracer : null);
long unspentGas = gasLimit - intrinsicGas;
long spentGas = gasLimit;
int stateSnapshot = _stateProvider.TakeSnapshot();
int storageSnapshot = _storageProvider.TakeSnapshot();
_stateProvider.SubtractFromBalance(sender, value, spec);
byte statusCode = StatusCode.Failure;
TransactionSubstate substate = null;
try
{
if (transaction.IsContractCreation)
{
recipient = transaction.IsSystem()
? transaction.SenderAddress
: ContractAddress.From(sender, _stateProvider.GetNonce(sender) - 1);
if (_stateProvider.AccountExists(recipient))
{
if (_virtualMachine.GetCachedCodeInfo(recipient, spec).MachineCode.Length != 0 || _stateProvider.GetNonce(recipient) != 0)
{
if (_logger.IsTrace)
{
_logger.Trace($"Contract collision at {recipient}"); // the account already owns the contract with the code
}
throw new TransactionCollisionException();
}
_stateProvider.UpdateStorageRoot(recipient, Keccak.EmptyTreeHash);
}
}
ExecutionEnvironment env = new ExecutionEnvironment();
env.Value = value;
env.TransferValue = value;
env.Sender = sender;
env.CodeSource = recipient;
env.ExecutingAccount = recipient;
env.CurrentBlock = block;
env.GasPrice = gasPrice;
env.InputData = data ?? Array.Empty <byte>();
env.CodeInfo = machineCode == null?_virtualMachine.GetCachedCodeInfo(recipient, spec) : new CodeInfo(machineCode);
env.Originator = sender;
ExecutionType executionType = transaction.IsContractCreation ? ExecutionType.Create : ExecutionType.Call;
using (EvmState state = new EvmState(unspentGas, env, executionType, true, false))
{
substate = _virtualMachine.Run(state, txTracer);
unspentGas = state.GasAvailable;
}
if (substate.ShouldRevert || substate.IsError)
{
if (_logger.IsTrace)
{
_logger.Trace("Restoring state from before transaction");
}
_stateProvider.Restore(stateSnapshot);
_storageProvider.Restore(storageSnapshot);
}
else
{
// tks: there is similar code fo contract creation from init and from CREATE
// this may lead to inconsistencies (however it is tested extensively in blockchain tests)
if (transaction.IsContractCreation)
{
long codeDepositGasCost = CodeDepositHandler.CalculateCost(substate.Output.Length, spec);
if (unspentGas < codeDepositGasCost && spec.IsEip2Enabled)
{
throw new OutOfGasException();
}
if (unspentGas >= codeDepositGasCost)
{
Keccak codeHash = _stateProvider.UpdateCode(substate.Output);
_stateProvider.UpdateCodeHash(recipient, codeHash, spec);
unspentGas -= codeDepositGasCost;
}
}
foreach (Address toBeDestroyed in substate.DestroyList)
{
if (_logger.IsTrace)
{
_logger.Trace($"Destroying account {toBeDestroyed}");
}
_storageProvider.ClearStorage(toBeDestroyed);
_stateProvider.DeleteAccount(toBeDestroyed);
if (txTracer.IsTracingRefunds)
{
txTracer.ReportRefund(RefundOf.Destroy);
}
}
statusCode = StatusCode.Success;
}
spentGas = Refund(gasLimit, unspentGas, substate, sender, gasPrice, spec);
}
catch (Exception ex) when(ex is EvmException || ex is OverflowException) // TODO: OverflowException? still needed? hope not
{
if (_logger.IsTrace)
{
_logger.Trace($"EVM EXCEPTION: {ex.GetType().Name}");
}
_stateProvider.Restore(stateSnapshot);
_storageProvider.Restore(storageSnapshot);
}
if (_logger.IsTrace)
{
_logger.Trace("Gas spent: " + spentGas);
}
Address gasBeneficiary = block.GasBeneficiary;
if (statusCode == StatusCode.Failure || !(substate?.DestroyList.Contains(gasBeneficiary) ?? false))
{
if (notSystemTransaction)
{
if (!_stateProvider.AccountExists(gasBeneficiary))
{
_stateProvider.CreateAccount(gasBeneficiary, (ulong)spentGas * gasPrice);
}
else
{
_stateProvider.AddToBalance(gasBeneficiary, (ulong)spentGas * gasPrice, spec);
}
}
}
if (!isCall)
{
_storageProvider.Commit(txTracer.IsTracingState ? txTracer : null);
_stateProvider.Commit(spec, txTracer.IsTracingState ? txTracer : null);
}
else
{
_storageProvider.Reset();
_stateProvider.Reset();
if (wasSenderAccountCreatedInsideACall)
{
_stateProvider.DeleteAccount(sender);
}
else
{
_stateProvider.AddToBalance(sender, senderReservedGasPayment, spec);
if (notSystemTransaction)
{
_stateProvider.DecrementNonce(sender);
}
}
_stateProvider.Commit(spec);
}
if (!isCall && notSystemTransaction)
{
block.GasUsed += spentGas;
}
if (txTracer.IsTracingReceipt)
{
Keccak stateRoot = null;
bool eip658Enabled = _specProvider.GetSpec(block.Number).IsEip658Enabled;
if (!eip658Enabled)
{
_stateProvider.RecalculateStateRoot();
stateRoot = _stateProvider.StateRoot;
}
if (statusCode == StatusCode.Failure)
{
txTracer.MarkAsFailed(recipient, spentGas, (substate?.ShouldRevert ?? false) ? substate.Output : Array.Empty <byte>(), substate?.Error, stateRoot);
}
else
{
txTracer.MarkAsSuccess(recipient, spentGas, substate.Output, substate.Logs.Any() ? substate.Logs.ToArray() : Array.Empty <LogEntry>(), stateRoot);
}
}
}