public void Test_SetMinter()
{
var tx = new TransactionReceipt();
var context = new InvocationContext(_mintCntrlAdd, _stateManager.LastApprovedSnapshot, tx);
var contract = new NativeTokenContract(context);
// set the minter
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodSetMinter, _minterAdd);
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.Ok, contract.SetMinter(_minterAdd, frame));
var decoder = new ContractDecoder(frame.ReturnValue);
var res = decoder.Decode("uint160")[0] as UInt160 ?? throw new Exception("Invalid return value format");
Assert.AreEqual(_minterAdd, res);
}
// get the minter
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodGetMinter);
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.Ok, contract.GetMinter(frame));
var decoder = new ContractDecoder(frame.ReturnValue);
var res = decoder.Decode("uint160")[0] as UInt160 ?? throw new Exception("Invalid return value format");
Assert.AreEqual(_minterAdd, res);
}
}
public void Test_SendRawTransactionContractInvocation()
{
var rawTx2 = "0xf8848001832e1a3094010000000000000000000000000000000000000080a4c76d99bd000000000000000000000000000000000000000000042300c0d3ae6a03a0000075a0f5e9683653d203dc22397b6c9e1e39adf8f6f5ad68c593ba0bb6c35c9cd4dbb8a0247a8b0618930c5c4abe178cbafb69c6d3ed62cfa6fa33f5c8c8147d096b0aa0";
var ethTx = new TransactionChainId(rawTx2.HexToBytes());
var t = _apiService !.MakeTransaction(ethTx);
var r = ethTx.Signature.R;
while (r.Length < 32)
{
r = "00".HexToBytes().Concat(r).ToArray();
}
var s = ethTx.Signature.S;
while (s.Length < 32)
{
s = "00".HexToBytes().Concat(s).ToArray();
}
var signature = r.Concat(s).Concat(ethTx.Signature.V).ToArray();
var keyPair = new EcdsaKeyPair("0xE83385AF76B2B1997326B567461FB73DD9C27EAB9E1E86D26779F4650C5F2B75"
.HexToBytes().ToPrivateKey());
var receipt = _transactionSigner.Sign(t, keyPair, true);
Assert.AreEqual(receipt.Signature, signature.ToSignature(true));
var ethTx2 = t.GetEthTx(receipt.Signature, true);
Assert.AreEqual(ethTx.ChainId, ethTx2.ChainId);
Assert.AreEqual(ethTx.Data, ethTx2.Data);
// Assert.AreEqual(ethTx.Nonce, ethTx2.Nonce);
Assert.AreEqual(ethTx.Signature.R, ethTx2.Signature.R);
Assert.AreEqual(ethTx.Signature.S, ethTx2.Signature.S);
Assert.AreEqual(ethTx.Signature.V, ethTx2.Signature.V);
// Assert.AreEqual(ethTx.Value, ethTx2.Value);
Assert.AreEqual(ethTx.GasLimit, ethTx2.GasLimit);
Assert.AreEqual(ethTx.GasPrice, ethTx2.GasPrice);
Assert.AreEqual(ethTx.ReceiveAddress, ethTx2.ReceiveAddress);
//Assert.AreEqual(ethTx, ethTx2);
var txid = _apiService !.SendRawTransaction(rawTx2);
// check we get a transaction hash, not error message
Assert.AreEqual("0x", txid.Substring(0, 2));
// check this hash is not empty
Assert.AreNotEqual("0x", txid);
// check encoding is correct
var decoder = new ContractDecoder(t.Invocation.ToByteArray());
var args = decoder.Decode(Lrc20Interface.MethodSetAllowedSupply);
var res = args[0] as UInt256 ?? throw new Exception("Failed to decode invocation");
var supply = new BigInteger(5001000) * BigInteger.Pow(10, 18);;
Console.WriteLine($"supply: {supply}");
Assert.AreEqual(res.ToHex(), supply.ToUInt256().ToHex());
}
public void Test_MaxSupply()
{
var tx = new TransactionReceipt();
var context = new InvocationContext(_mintCntrlAdd, _stateManager.LastApprovedSnapshot, tx);
var contract = new NativeTokenContract(context);
var keyPair = new EcdsaKeyPair("0x4433d156e8c53bf5b50af07aa95a29436f29a94e0ccc5d58df8e57bdc8583c32"
.HexToBytes().ToPrivateKey());
var address = keyPair.PublicKey.GetAddress();
// set the allowedSupply
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodSetAllowedSupply, Money.Parse("10000"));
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.Ok, contract.SetAllowedSupply(Money.Parse("10000").ToUInt256(), frame));
}
// set the allowedSupply > maxLimit
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodSetAllowedSupply, Money.Parse("1000000001"));
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.ExecutionHalted, contract.SetAllowedSupply(Money.Parse("1000000001").ToUInt256(), frame));
}
// verify allowedSupply
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodGetAllowedSupply);
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.Ok, contract.GetAllowedSupply(frame));
var decoder = new ContractDecoder(frame.ReturnValue);
var res = decoder.Decode("uint256")[0] as UInt256 ?? throw new Exception("Invalid return value format");
Assert.AreEqual(Money.Parse("10000"), res.ToMoney());
}
// mint tokens to address
{
context = new InvocationContext(_stateManager.LastApprovedSnapshot.Balances.GetMinter(), _stateManager.LastApprovedSnapshot, tx);
contract = new NativeTokenContract(context);
var input = ContractEncoder.Encode(Lrc20Interface.MethodMint, address, Money.Parse("1000000000"));
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.ExecutionHalted, contract.Mint(address, Money.Parse("1000000000").ToUInt256(), frame));
}
}
public void Test_InvalidMintController()
{
var tx = new TransactionReceipt();
var context = new InvocationContext(_mintCntrlAdd, _stateManager.LastApprovedSnapshot, tx);
var contract = new NativeTokenContract(context);
// set minter
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodSetMinter, _minterAdd);
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.Ok, contract.SetMinter(_minterAdd, frame));
var decoder = new ContractDecoder(frame.ReturnValue);
var res = decoder.Decode("uint160")[0] as UInt160 ?? throw new Exception("Invalid return value format");
Assert.AreEqual(_minterAdd, res);
}
// set the allowedSupply
{
context = new InvocationContext(_stateManager.LastApprovedSnapshot.Balances.GetMinter(), _stateManager.LastApprovedSnapshot, tx);
contract = new NativeTokenContract(context);
var input = ContractEncoder.Encode(Lrc20Interface.MethodSetAllowedSupply, Money.Parse("10000"));
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.ExecutionHalted, contract.SetAllowedSupply(Money.Parse("10000").ToUInt256(), frame));
}
// verify allowedSupply
{
var input = ContractEncoder.Encode(Lrc20Interface.MethodGetAllowedSupply);
var call = _contractRegisterer.DecodeContract(context, ContractRegisterer.NativeTokenContract, input);
Assert.IsNotNull(call);
var frame = new SystemContractExecutionFrame(call !, context, input, 100_000_000);
Assert.AreEqual(ExecutionStatus.Ok, contract.GetAllowedSupply(frame));
var decoder = new ContractDecoder(frame.ReturnValue);
var res = decoder.Decode("uint256")[0] as UInt256 ?? throw new Exception("Invalid return value format");
Assert.AreEqual(Money.Parse("0"), res.ToMoney());
}
}
// For every cycle, a new set of keys are required for the validators. This key generation process
// is done on-chain. That means, every communication between participating nodes happen via transactions
// in the block. For example, if node A wants to send a msg to node B, then node A encrypts the
// msg with node B's public key and broadcast this as a transaction to the governance contract.
// After this transaction is added to the chain, node B can decrypt the msg and read it.
// During block execution, after every system transaction is executed, the following method
// is invoked. It evaluates the transaction and if it's keygen related, it produces
// appropriate response in form of a transaction and adds it to the pool for the addition
// in the block.
private void BlockManagerOnSystemContractInvoked(object _, InvocationContext context)
{
if (context.Receipt is null)
{
return;
}
var highestBlock = _blockSynchronizer.GetHighestBlock();
var willParticipate =
!highestBlock.HasValue ||
GovernanceContract.IsKeygenBlock(context.Receipt.Block) &&
GovernanceContract.SameCycle(highestBlock.Value, context.Receipt.Block);
if (!willParticipate)
{
Logger.LogInformation(
highestBlock != null
? $"Will not participate in keygen: highest block is {highestBlock.Value}, call block is {context.Receipt.Block}"
: $"Will not participate in keygen: highest block is null, call block is {context.Receipt.Block}"
);
}
var tx = context.Receipt.Transaction;
if (
!tx.To.Equals(ContractRegisterer.GovernanceContract) &&
!tx.To.Equals(ContractRegisterer.StakingContract)
)
{
return;
}
if (context.Receipt.Block < _blockManager.GetHeight() &&
!GovernanceContract.SameCycle(context.Receipt.Block, _blockManager.GetHeight()))
{
Logger.LogWarning(
$"System contract invoked from outdated tx: {context.Receipt.Hash}, tx block {context.Receipt.Block}, our height is {_blockManager.GetHeight()}");
return;
}
if (tx.Invocation.Length < 4)
{
return;
}
var signature = ContractEncoder.MethodSignatureAsInt(tx.Invocation);
var decoder = new ContractDecoder(tx.Invocation.ToArray());
var contractAddress = tx.To;
if (contractAddress.Equals(ContractRegisterer.GovernanceContract) && signature ==
ContractEncoder.MethodSignatureAsInt(GovernanceInterface.MethodFinishCycle))
{
Logger.LogDebug("Aborting ongoing keygen because cycle was finished");
_keyGenRepository.SaveKeyGenState(Array.Empty <byte>());
}
else if (signature == ContractEncoder.MethodSignatureAsInt(StakingInterface.MethodFinishVrfLottery))
{
Logger.LogDebug($"Detected call of StakingInterface.{StakingInterface.MethodFinishVrfLottery}");
var cycle = GovernanceContract.GetCycleByBlockNumber(context.Receipt.Block);
var data = new GovernanceContract(context).GetNextValidators();
var publicKeys =
(data ?? throw new ArgumentException("Cannot parse method args"))
.Select(x => x.ToPublicKey())
.ToArray();
Logger.LogDebug(
$"Keygen is started in cycle={cycle}, block={context.Receipt.Block} for validator set: {string.Join(",", publicKeys.Select(x => x.ToHex()))}"
);
if (!publicKeys.Contains(_privateWallet.EcdsaKeyPair.PublicKey))
{
Logger.LogWarning("Skipping validator change event since we are not new validator");
return;
}
var keygen = GetCurrentKeyGen();
if (keygen != null && keygen.Cycle == cycle)
{
throw new ArgumentException("Cannot start keygen, since one is already running");
}
if (keygen != null)
{
Logger.LogWarning($"Aborted keygen for cycle {keygen.Cycle} to start keygen for cycle {cycle}");
}
_keyGenRepository.SaveKeyGenState(Array.Empty <byte>());
var faulty = (publicKeys.Length - 1) / 3;
keygen = new TrustlessKeygen(_privateWallet.EcdsaKeyPair, publicKeys, faulty, cycle);
var commitTx = MakeCommitTransaction(keygen.StartKeygen(), cycle);
Logger.LogTrace($"Produced commit tx with hash: {commitTx.Hash.ToHex()}");
if (willParticipate)
{
Logger.LogInformation($"Try to send KeyGen Commit transaction");
if (_transactionPool.Add(commitTx) is var error && error != OperatingError.Ok)
{
Logger.LogError($"Error creating commit transaction ({commitTx.Hash.ToHex()}): {error}");
}
else
{
Logger.LogInformation($"KeyGen Commit transaction sent");
}
}
Logger.LogDebug($"Saving keygen {keygen.ToBytes().ToHex()}");
_keyGenRepository.SaveKeyGenState(keygen.ToBytes());
}
