public ExecutionStatus GetDeployHeight(UInt160 contractAddress, SystemContractExecutionFrame frame)
{
frame.ReturnValue = new byte[64];
try
{
if (HardforkHeights.IsHardfork_3Active(frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight()))
{
if (HardforkHeights.IsHardfork_6Active(
frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight()))
{
frame.ReturnValue = _deployHeight.GetValue(contractAddress.ToBytes()) ?? new byte[64];
}
else
{
frame.ReturnValue = _deployHeight.GetValue(contractAddress.ToBytes());
}
}
}
catch (Exception e)
{
Logger.LogInformation($"Exception while get deploy height: {e}");
}
return(ExecutionStatus.Ok);
}
private ExecutionStatus DeployV1(byte[] byteCode, SystemContractExecutionFrame frame)
{
Logger.LogInformation($"Deploy({byteCode.ToHex()})");
frame.ReturnValue = Array.Empty <byte>();
frame.UseGas(checked (GasMetering.DeployCost + GasMetering.DeployCostPerByte * (ulong)byteCode.Length));
var receipt = _context.Receipt ?? throw new InvalidOperationException();
// calculate contract hash and register it
// the contractAddress at which the bytecode will be stored as calculated
// from the sender address (To) and its nonce.
var hash = UInt160Utils.Zero.ToBytes().Ripemd();
if (receipt.Transaction?.From != null)
{
hash = receipt.Transaction.From.ToBytes()
.Concat(receipt.Transaction.Nonce.ToBytes())
.Ripemd();
}
var contract = new Contract(hash, byteCode);
if (!VirtualMachine.VerifyContract(contract.ByteCode, false))
{
Logger.LogInformation("Failed to verify contract");
return(ExecutionStatus.ExecutionHalted);
}
try
{
_context.Snapshot.Contracts.AddContract(_context.Sender, new Contract(hash, contract.ByteCode));
Logger.LogInformation($"New contract with address {hash.ToHex()} deployed");
if (HardforkHeights.IsHardfork_3Active(frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight()))
{
_deployHeight.SetValue(hash.ToBytes(),
frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight().ToBytes().ToArray());
}
}
catch (OutOfGasException e)
{
Logger.LogInformation("Out of gas");
frame.UseGas(e.GasUsed);
return(ExecutionStatus.GasOverflow);
}
return(ExecutionStatus.Ok);
}
public ExecutionStatus SetDeployHeight(UInt160 contractAddress, byte[] height, SystemContractExecutionFrame frame)
{
try
{
// Only contract itself can change its deploy height
if (!frame.CurrentAddress.Equals(contractAddress))
{
throw new Exception("Only contract itself can change its deploy height");
}
if (HardforkHeights.IsHardfork_3Active(frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight()))
{
_deployHeight.SetValue(contractAddress.ToBytes(), height.ToArray());
}
}
catch (Exception e)
{
Logger.LogInformation($"Exception while set deploy height: {e}");
return(ExecutionStatus.UnknownError);
}
return(ExecutionStatus.Ok);
}
private ExecutionStatus DeployV2(byte[] byteCode, SystemContractExecutionFrame frame)
{
Logger.LogInformation($"Deploy({byteCode.ToHex()})");
frame.ReturnValue = Array.Empty <byte>();
frame.UseGas(checked (GasMetering.DeployCost + GasMetering.DeployCostPerByte * (ulong)byteCode.Length));
var receipt = _context.Receipt ?? throw new InvalidOperationException();
/* calculate contract hash and register it */
var hash = UInt160Utils.Zero.ToBytes().Ripemd();
if (receipt.Transaction?.From != null)
{
hash = receipt.Transaction.From.ToBytes()
.Concat(receipt.Transaction.Nonce.ToBytes())
.Ripemd();
}
// TODO: this is fake, we have to think of what happens if someone tries to get current address during deploy
// deployment code
var deploymentContract = new Contract(hash, byteCode);
if (!VirtualMachine.VerifyContract(deploymentContract.ByteCode, true))
{
Logger.LogInformation("Failed to verify deployment contract");
return(ExecutionStatus.ExecutionHalted);
}
try
{
_context.Snapshot.Contracts.AddContract(_context.Sender, new Contract(hash, deploymentContract.ByteCode));
}
catch (OutOfGasException e)
{
Logger.LogInformation("Out of gas");
frame.UseGas(e.GasUsed);
return(ExecutionStatus.GasOverflow);
}
var status = VirtualMachine.InvokeWasmContract(deploymentContract, _context, Array.Empty <byte>(), frame.GasLimit);
if (status.Status != ExecutionStatus.Ok || status.ReturnValue is null)
{
Logger.LogInformation("Failed to initialize contract");
return(ExecutionStatus.ExecutionHalted);
}
// runtime code
var runtimeContract = new Contract(hash, status.ReturnValue);
if (!VirtualMachine.VerifyContract(runtimeContract.ByteCode, true))
{
Logger.LogInformation("Failed to verify runtime contract");
return(ExecutionStatus.ExecutionHalted);
}
try
{
_context.Snapshot.Contracts.AddContract(_context.Sender, new Contract(hash, runtimeContract.ByteCode));
Logger.LogInformation($"New contract with address {hash.ToHex()} deployed");
if (HardforkHeights.IsHardfork_3Active(frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight()))
{
_deployHeight.SetValue(hash.ToBytes(),
frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight().ToBytes().ToArray());
}
}
catch (OutOfGasException e)
{
Logger.LogInformation("Out of gas");
frame.UseGas(e.GasUsed);
return(ExecutionStatus.GasOverflow);
}
return(ExecutionStatus.Ok);
}