public static CetSigs ParseFromTLV(TLVReader reader)
{
CetSigs cet = new CetSigs();
using (var r = reader.StartReadRecord())
{
if (r.Type != AdaptorSigsTLVType)
{
throw new FormatException("Invalid TLV type, expected adaptor sigs");
}
List <AdaptorSignature> sigs = new List <AdaptorSignature>();
while (!r.IsEnd)
{
sigs.Add(AdaptorSignature.ParseFromTLV(reader));
}
cet.OutcomeSigs = sigs.ToArray();
}
Span <byte> buf = stackalloc byte[64];
reader.ReadBytes(buf);
if (!ECDSASignature.TryParseFromCompact(buf, out var sig))
{
throw new FormatException("Invalid DER signature");
}
cet.RefundSig = sig;
return(cet);
}
public static Script ReadScript(this TLVReader reader)
{
var size = reader.ReadU16();
var buf = new byte[size];
reader.ReadBytes(buf);
return(Script.FromBytesUnsafe(buf));
}
public static AdaptorSignature ParseFromTLV(TLVReader reader)
{
Span <byte> output = stackalloc byte[65 + 97];
reader.ReadBytes(output);
if (!SecpECDSAAdaptorSignature.TryCreate(output.Slice(0, 65), out var sig))
{
throw new FormatException("Invalid adaptor signature");
}
if (!SecpECDSAAdaptorProof.TryCreate(output.Slice(65), out var proof))
{
throw new FormatException("Invalid adaptor proof");
}
return(new AdaptorSignature(sig, proof));
}
public void ReadTLV(TLVReader reader, Network network)
{
if (reader.ReadU16() != TLVType)
{
throw new FormatException("Invalid TLV type for accept");
}
TemporaryContractId = reader.ReadUInt256();
TotalCollateral = Money.Satoshis(reader.ReadU64());
PubKeys = new PubKeyObject();
var pk = new byte[33];
reader.ReadBytes(pk);
PubKeys.FundingKey = new PubKey(pk, true);
PubKeys.PayoutAddress = reader.ReadScript().GetDestinationAddress(network);
var inputLen = reader.ReadU16();
FundingInputs = new FundingInput[inputLen];
for (int i = 0; i < inputLen; i++)
{
FundingInputs[i] = FundingInput.ParseFromTLV(reader, network);
}
ChangeAddress = reader.ReadScript().GetDestinationAddress(network);
CetSigs = CetSigs.ParseFromTLV(reader);
}
public void ReadTLV(TLVReader reader, Network network)
{
if (reader.ReadU16() != TLVType)
{
throw new FormatException("Invalid TLV type for offer");
}
reader.ReadByte(); // contract_flags
ChainHash = reader.ReadUInt256();
if (network.GenesisHash != network.GenesisHash)
{
throw new FormatException("Invalid ChainHash");
}
Span <byte> buf = stackalloc byte[64];
using (var ciRecord = reader.StartReadRecord())
{
if (ciRecord.Type != TLVContractInfoType)
{
throw new FormatException("Invalid TLV type for contract info");
}
List <ContractInfo> cis = new List <ContractInfo>();
while (!ciRecord.IsEnd)
{
ciRecord.ReadBytes(buf.Slice(0, 32));
var sats = ciRecord.ReadU64();
cis.Add(new Messages.ContractInfo(new DiscreteOutcome(buf.Slice(0, 32).ToArray()), Money.Satoshis(sats)));
}
ContractInfo = cis.ToArray();
}
using (var oracleRecord = reader.StartReadRecord())
{
if (oracleRecord.Type != TLVOracleInfoType)
{
throw new FormatException("Invalid TLV type for oracle info");
}
oracleRecord.ReadBytes(buf.Slice(0, 64));
OracleInfo = OracleInfo.Create(buf);
}
PubKeys = new PubKeyObject();
reader.ReadBytes(buf.Slice(0, 33));
PubKeys.FundingKey = new PubKey(buf.Slice(0, 33).ToArray());
PubKeys.PayoutAddress = reader.ReadScript().GetDestinationAddress(network);
if (PubKeys.PayoutAddress is null)
{
throw new FormatException("Invalid script");
}
TotalCollateral = Money.Satoshis(reader.ReadU64());
var fiCount = reader.ReadU16();
List <FundingInput> fis = new List <FundingInput>();
while (fiCount > 0)
{
fis.Add(FundingInput.ParseFromTLV(reader, network));
fiCount--;
}
FundingInputs = fis.ToArray();
ChangeAddress = reader.ReadScript().GetDestinationAddress(network);
if (ChangeAddress is null)
{
throw new FormatException("Invalid script");
}
FeeRate = new FeeRate(Money.Satoshis(reader.ReadU64()), 1);
Timeouts = new Timeouts()
{
ContractMaturity = reader.ReadU32(),
ContractTimeout = reader.ReadU32()
};
}
