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($"Exception while get deploy height: {e}");
}
return(ExecutionStatus.Ok);
}
public static UInt256 ToUInt256(this UInt160 value)
{
var buffer = new byte[32];
Array.Copy(value.ToBytes(), 0, buffer, 12, 20);
return(buffer.ToUInt256());
}
private static string PrettyParam(dynamic param)
{
return(param switch
{
UInt256 x => x.ToBytes().ToHex(),
UInt160 x => x.ToBytes().ToHex(),
byte[] b => b.ToHex(),
byte[][] s => string.Join(", ", s.Select(t => t.ToHex())),
_ => param.ToString()
});
public ExecutionStatus SetDeployHeight(UInt160 contractAddress, byte[] height, SystemContractExecutionFrame frame)
{
try
{
// Only contract itself can change its deploy height
if (!frame.CurrentAddress.Equals(contractAddress))
{
throw new Exception("Only contract itself can change its deploy height");
}
if (HardforkHeights.IsHardfork_3Active(frame.InvocationContext.Snapshot.Blocks.GetTotalBlockHeight()))
{
_deployHeight.SetValue(contractAddress.ToBytes(), height.ToArray());
}
}
catch (Exception e)
{
Logger.LogInformation($"Exception while set deploy height: {e}");
return(ExecutionStatus.UnknownError);
}
return(ExecutionStatus.Ok);
}
public static byte[] BuildPrefix(this EntryPrefix prefix, UInt160 key)
{
return(BuildPrefix(prefix, key.ToBytes()));
}
public static string ToHex(this UInt160 value, bool prefix = true)
{
return(value.ToBytes().ToHex(prefix));
}
public static BigInteger ToBigInteger(this UInt160 value)
{
return(new BigInteger(value.ToBytes().Reverse().Concat(new byte[] { 0 }).ToArray()));
}
public void SetMinter(UInt160 value)
{
var key = EntryPrefix.MinterAddress.BuildPrefix();
_state.AddOrUpdate(key, value.ToBytes());
}
private void SetAllowance(UInt160 owner, UInt160 spender, UInt256 amount)
{
_allowance.SetValue(owner.ToBytes().Concat(spender.ToBytes()), amount.ToBytes());
}
private UInt256 GetAllowance(UInt160 owner, UInt160 spender)
{
var amountBytes = _allowance.GetValue(owner.ToBytes().Concat(spender.ToBytes()));
return(amountBytes.Length == 0 ? UInt256Utils.Zero : amountBytes.ToUInt256());
}