public void CanValidateCETSigs()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var accept = Parse <Messages.Accept>("Data/Accept2.json");
var sign = Parse <Messages.Sign>("Data/Sign2.json");
var funding = Transaction.Parse("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", Network.Main);
var cet = Transaction.Parse("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", Network.Main);
RemoveSigs(cet);
RemoveSigs(funding);
foreach (var isInitiator in new[] { true, false })
{
var b = new DLCTransactionBuilder(isInitiator, offer, accept, sign, funding, Network.RegTest);
var actualCet = b.BuildCET(offer.ContractInfo[1].Outcome);
Assert.Equal(cet.ToString(), actualCet.ToString());
Assert.True(b.VerifyRemoteCetSigs(isInitiator ? accept.CetSigs.OutcomeSigs : sign.CetSigs.OutcomeSigs));
Assert.True(b.VerifyRemoteRefundSignature());
b = new DLCTransactionBuilder(isInitiator, offer, accept, sign, Network.RegTest);
var actualFunding = b.GetFundingTransaction();
RemoveSigs(actualFunding);
Assert.Equal(funding.ToString(), actualFunding.ToString());
}
}
public void CanCreateFunding()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var accept = Parse <Messages.Accept>("Data/Accept2.json");
var b = new DLCTransactionBuilder(true, offer, accept, null, Network.RegTest);
var expected = Transaction.Parse("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", Network.Main);
foreach (var input in expected.Inputs)
{
input.WitScript = WitScript.Empty;
}
// We cheat for now...
b.FundingOverride = expected;
var actual = b.BuildFunding();
Assert.Equal(expected.ToString(), actual.ToString());
expected = Transaction.Parse("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", Network.Main);
foreach (var input in expected.Inputs)
{
input.WitScript = WitScript.Empty;
}
actual = b.BuildRefund();
Assert.Equal(expected.ToString(), actual.ToString());
}
public void FullExchange2()
{
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var offerKey = new Key();
var acceptKey = new Key();
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var oracleInfo = OracleInfo.Parse("e4d36e995ff4bba4da2b60ad907d61d36e120d6f7314a3c2a20c6e27a5cd850ff67f8f41718c86f05eb95fab308f5ed788a2a963124299154648f97124caa579");
var requiredCollateral = initiator.Offer(oracleInfo.PubKey, oracleInfo.RValue,
new DiscretePayoffs()
{
new DiscretePayoff("Republicans", Money.Coins(0.4m)),
new DiscretePayoff("Democrats", -Money.Coins(0.6m)),
new DiscretePayoff("Smith", Money.Zero)
}, new Timeouts()
{
ContractMaturity = 100,
ContractTimeout = 200
});
var fund1 = GetFundingPSBT(acceptorInputKey, requiredCollateral);
var offer = initiator.FundOffer(offerKey, fund1);
var payoff = acceptor.Accept(offer);
var fund2 = GetFundingPSBT(initiatorInputKey, payoff.CalculateMinimumCollateral());
var accept = acceptor.FundAccept(acceptKey, fund2);
initiator.Sign1(accept);
var fundPSBT = initiator.GetFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.Sign2(offerKey, fundPSBT);
acceptor.Finalize1(sign);
fundPSBT = acceptor.GetFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
var fullyVerified = acceptor.Finalize(fundPSBT);
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
var cet = initiator.BuildCET(offer.ContractInfo[0].Outcome);
var keyBytes = Encoders.Hex.DecodeData("d1da46f96f0be50bce2bbabe6bc8633f448ec3f1d14715a0b086b68ed34e095d");
var oracleSecret = new Key(keyBytes);
var sig = oracleInfo.RValue.CreateSchnorrSignature(oracleSecret.ToECPrivKey());
Assert.True(oracleInfo.PubKey.SigVerifyBIP340(sig, new DiscreteOutcome("Republicans").Hash));
initiator.BuildSignedCET(offerKey, oracleSecret);
this.testOutputHelper.WriteLine("----Final state------");
testOutputHelper.WriteLine(JObject.Parse(initiator.ExportState()).ToString(Formatting.Indented));
this.testOutputHelper.WriteLine("---------------------");
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
if (await this.TryGetDLC(name) != null)
{
throw new CommandException("name", "This DLC already exists");
}
EventFullName evtName = context.GetEventName();
var oracle = await GetOracle("eventfullname", evtName.OracleName);
if (oracle?.PubKey is null)
{
throw new CommandException("eventfullname", "The specified oracle does not exists");
}
var evt = await GetEvent("eventfullname", evtName);
var payoffsStr = context.ParseResult.CommandResult.GetArgumentValueOrDefault <List <string> >("payoff");
if (payoffsStr is null || payoffsStr.Count == 0)
{
throw new CommandOptionRequiredException("payoff");
}
var payoffs = CreatePayoffs(payoffsStr);
FixCasing(evt, payoffs);
var builder = new DLCTransactionBuilder(true, null, null, null, Network);
var timeout = new Timeouts()
{
ContractMaturity = 0,
ContractTimeout = Constants.NeverLockTime
};
if (context.ParseResult.HasOption("cetlocktime"))
{
timeout.ContractMaturity = new LockTime(context.ParseResult.ValueForOption <uint>("cetlocktime"));
}
if (context.ParseResult.HasOption("refundlocktime"))
{
timeout.ContractTimeout = new LockTime(context.ParseResult.ValueForOption <uint>("refundlocktime"));
}
var collateral = payoffs.CalculateMinimumCollateral();
builder.Offer(oracle.PubKey, evt.EventId !.RValue, payoffs, timeout);
var dlc = await Repository.NewDLC(evt.EventId, builder);
await NameRepository.AsDLCNameRepository().SetMapping(name, dlc.LocalId);
context.Console.Out.Write($"Offer created, you now need to setup the DLC sending {collateral} BTC to yourself. For more information, run `dlc show \"{name}\"`.");
}
public void CanCalculateEventId()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var accept = Parse <Messages.Accept>("Data/Accept2.json");
var builder = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var payoff = builder.Accept(offer);
PSBT fundPSBT = GetFundingPSBT(new Key(), payoff.CalculateMinimumCollateral());
var accept2 = builder.FundAccept(new Key(), fundPSBT);
Assert.Equal(accept.EventId, accept2.EventId);
}
public void CanCreateAccept()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var builder = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var fundingInputKey = new Key();
var payoffs = builder.Accept(offer);
PSBT fundPSBT = GetFundingPSBT(fundingInputKey, payoffs.CalculateMinimumCollateral());
var accept = builder.FundAccept(new Key(), fundPSBT);
builder = new DLCTransactionBuilder(true, offer, null, null, Network.RegTest);
builder.Sign1(accept);
}
public async Task dlc_test()
{
await foreach (var vector in DLCTestVector.ReadVectors())
{
Assert.Equal(vector.ExpectedOfferTLV, Encoders.Hex.EncodeData(vector.Offer.ToTLV()));
var accept = new Accept();
accept.TemporaryContractId = vector.Offer.GetTemporaryContractId();
vector.FillFundingInformation(accept, "acceptParams");
accept.PubKeys.FundingKey = vector.AcceptPrivateKey.PubKey;
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
acceptor.Accept(vector.Offer, accept.TotalCollateral);
Assert.True(acceptor.State.TemporaryContractId);
var builtAccept = acceptor.FundAccept(vector.AcceptPrivateKey, accept.CreateSetupPSBT(Network.RegTest));
accept.CetSigs = builtAccept.CetSigs;
// this signature is non deterministic...
accept.CetSigs.RefundSig = Accept.ParseFromTLV(vector.ExpectedAcceptTLV, Network.RegTest).CetSigs.RefundSig;
Assert.Equal(vector.ExpectedAcceptTLV, Encoders.Hex.EncodeData(accept.ToTLV()));
var actualFundingTransaction = acceptor.GetFundingTransaction();
var actualRefundTransaction = acceptor.BuildRefund();
var actualCETs = new Transaction[vector.Offer.ContractInfo.Length];
for (int i = 0; i < vector.Offer.ContractInfo.Length; i++)
{
actualCETs[i] = acceptor.BuildCET(vector.Offer.ContractInfo[i].Outcome);
}
var offerer = new DLCTransactionBuilder(true, vector.Offer, null, null, Network.RegTest);
offerer.Sign1(accept);
var fundingPSBT = offerer.GetFundingPSBT();
FillSignatures(fundingPSBT, vector.SignedTxs.FundingTx);
var sign = offerer.Sign2(vector.OfferPrivateKey, fundingPSBT);
// this signature is non deterministic...
sign.CetSigs.RefundSig = Sign.ParseFromTLV(vector.ExpectedSignTLV, Network.RegTest).CetSigs.RefundSig;
Assert.Equal(vector.ExpectedSignTLV, Encoders.Hex.EncodeData(sign.ToTLV()));
Assert.Equal(
RemoveForDebug(vector.UnsignedTxs.FundingTx.ToString()),
RemoveForDebug(actualFundingTransaction.ToString()));
Assert.Equal(
RemoveForDebug(vector.UnsignedTxs.RefundTx.ToString()),
RemoveForDebug(actualRefundTransaction.ToString()));
for (int i = 0; i < actualCETs.Length; i++)
{
Assert.Equal(
RemoveForDebug(vector.UnsignedTxs.Cets[i].ToString()),
RemoveForDebug(actualCETs[i].ToString()));
}
Assert.NotNull(offerer.State.ContractId);
Assert.Equal(offerer.State.ContractId, acceptor.State.ContractId);
Assert.False(offerer.State.TemporaryContractId);
}
}
public void CanCreateAccept()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var builder = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var fundingInputKey = new Key();
PSBT fundPSBT = GetFundingPSBT(fundingInputKey, Money.Coins(0.4m));
Assert.True(PSBTFundingTemplate.TryParse(fundPSBT.ToBase64(), fundPSBT.Network, out var template));
var accept = builder.Accept(offer, template);
builder = new DLCTransactionBuilder(true, offer, accept, null, Network.RegTest);
Assert.True(builder.VerifyRemoteCetSigs());
Assert.True(builder.VerifyRemoteRefundSignature());
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
ECXOnlyPubKey oraclePubKey = GetOraclePubKey(context.ParseResult.ValueForOption <string>("oraclepubkey"));
SchnorrNonce schnorrNonce = GetSchnorrNonce(context.ParseResult.ValueForOption <string>("nonce"));
DLCTransactionBuilder builder = new DLCTransactionBuilder(true, null, null, null, Network);
var timeouts = new Timeouts()
{
ContractMaturity = GetLockTime(context, "maturity") ?? new LockTime(0),
ContractTimeout = GetLockTime(context, "expiration") ?? throw new CommandOptionRequiredException("expiration")
};
var ci = GetOutcomes(context.ParseResult.ValueForOption <string[]>("outcome"));
//var offer = builder.Offer(template, new OracleInfo(oraclePubKey, schnorrNonce), ci, timeouts);
//WriteObject(context, offer);
}
public DLCNextStep GetNextStep(Network network)
{
if (BuilderState is null)
{
throw new InvalidOperationException("BuilderState not set");
}
var builder = new DLCTransactionBuilder(BuilderState.ToString(), network);
DLCNextStep nextStep;
if (builder.State.IsInitiator)
{
if (FundKeyPath is null)
{
nextStep = DLCNextStep.Setup;
}
else if (Accept is null)
{
nextStep = DLCNextStep.CheckSigs;
}
else if (Sign is null)
{
nextStep = DLCNextStep.Fund;
}
else
{
nextStep = DLCNextStep.Done;
}
}
else
{
if (builder.State.Funding is null)
{
nextStep = DLCNextStep.Setup;
}
else if (Sign is null)
{
nextStep = DLCNextStep.CheckSigs;
}
else if (!builder.State.Funding.PSBT.CanExtractTransaction())
{
nextStep = DLCNextStep.Fund;
}
else
{
nextStep = DLCNextStep.Done;
}
}
return(nextStep);
}
public void FullExchange2()
{
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var fund1 = GetFundingPSBT(initiatorInputKey, Money.Coins(0.6m));
var fund2 = GetFundingPSBT(acceptorInputKey, Money.Coins(0.4m));
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var oracleInfo = OracleInfo.Parse("156c7d1c7922f0aa1168d9e21ac77ea88bbbe05e24e70a08bbe0519778f2e5daea3a68d8749b81682513b0479418d289d17e24d4820df2ce979f1a56a63ca525");
var offer = initiator.Offer(PSBTFundingTemplate.Parse(fund1), oracleInfo,
ContractInfo.CreateContract(
("Republicans_win", Money.Coins(1.0m)),
("Democrats_win", Money.Coins(0m)),
("other", Money.Coins(0.6m))), new Timeouts()
{
ContractMaturity = 100,
ContractTimeout = 200
});
var accept = acceptor.Accept(offer, PSBTFundingTemplate.Parse(fund2));
initiator.VerifySign(accept);
var fundPSBT = initiator.BuildFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.EndSign(fundPSBT);
acceptor.VerifySign(sign);
fundPSBT = acceptor.BuildFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
var psbt = acceptor.CombineFunding(fundPSBT);
psbt = psbt.Finalize();
var fullyVerified = psbt.ExtractTransaction();
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
var cet = initiator.BuildCET(offer.ContractInfo[0].Outcome);
var keyBytes = Encoders.Hex.DecodeData("39eabd151030f4f2d518fb8a8d00f679aa9e034c66263032a1245a04cfbc592b");
//Array.Reverse(keyBytes);
var oracleSecret = new Key(keyBytes);
initiator.BuildSignedCET(oracleSecret);
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
var dlc = await GetDLC("name", name);
if (dlc?.BuilderState is null ||
dlc?.OracleInfo is null)
{
throw new CommandException("name", "This DLC does not exist");
}
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
var psbt = context.ParsePSBT("signedpsbt", Network);
if (!builder.State.IsInitiator)
{
context.AssertState("name", dlc, false, DLCNextStep.Fund, Network);
var fullySigned = builder.Finalize(psbt);
dlc.BuilderState = builder.ExportStateJObject();
await Repository.SaveDLC(dlc);
context.WriteTransaction(fullySigned, builder.State.Funding?.FundCoin, Network);
}
else
{
context.AssertState("name", dlc, true, DLCNextStep.Fund, Network);
var key = await Repository.GetKey(dlc.FundKeyPath !);
try
{
var sign = builder.Sign2(key, psbt);
dlc.Sign = sign;
dlc.BuilderState = builder.ExportStateJObject();
await Repository.SaveDLC(dlc);
context.WriteObject(sign, Repository.JsonSettings);
}
catch (Exception ex)
{
throw new CommandException("signedpsbt", $"Invalid PSBT. ({ex.Message})");
}
}
}
public void CanCreateAccept()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
offer.SetContractPreimages(
new DiscreteOutcome("Republicans_win"),
new DiscreteOutcome("Democrats_win"),
new DiscreteOutcome("other")
);
var builder = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var fundingInputKey = new Key();
var payoffs = builder.Accept(offer);
PSBT fundPSBT = GetFundingPSBT(fundingInputKey, payoffs.CalculateMinimumCollateral());
var accept = builder.FundAccept(new Key(), fundPSBT);
builder = new DLCTransactionBuilder(true, offer, null, null, Network.RegTest);
builder.Sign1(accept);
}
public async Task <DLCState> NewDLC(OracleInfo oracleInfo, DLCTransactionBuilder builder)
{
var dir = Path.Combine(RepositoryDirectory, "DLCs");
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
var s = new DLCState()
{
OracleInfo = oracleInfo,
BuilderState = builder.ExportStateJObject(),
Id = RandomUtils.GetUInt256()
};
var file = GetDLCFilePath(s.Id);
await File.WriteAllTextAsync(file, JsonConvert.SerializeObject(s, JsonSettings));
return(s);
}
public void FullExchange()
{
var offerExample = Parse <Messages.Offer>("Data/Offer2.json");
var offerKey = new Key();
var acceptKey = new Key();
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var requiredFund = initiator.Offer(offerExample.OracleInfo.PubKey,
offerExample.OracleInfo.RValue,
DiscretePayoffs.CreateFromContractInfo(offerExample.ContractInfo, offerExample.TotalCollateral,
new[] { new DiscreteOutcome("Republicans_win"), new DiscreteOutcome("Democrats_win"), new DiscreteOutcome("other") }),
offerExample.Timeouts);
var fund1 = GetFundingPSBT(initiatorInputKey, requiredFund);
var offer = initiator.FundOffer(offerKey, fund1);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var acceptorPayoff = acceptor.Accept(offer);
var fund2 = GetFundingPSBT(acceptorInputKey, acceptorPayoff.CalculateMinimumCollateral());
var accept = acceptor.FundAccept(acceptKey, fund2);
initiator.Sign1(accept);
var fundPSBT = initiator.GetFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.Sign2(offerKey, fundPSBT);
acceptor.Finalize1(sign);
fundPSBT = acceptor.GetFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
var fullyVerified = acceptor.Finalize(fundPSBT);
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
fundPSBT = acceptor.GetFundingPSBT();
if (fundPSBT.TryGetEstimatedFeeRate(out var estimated))
{
Assert.True(estimated > new FeeRate(1.0m), "Fee Rate of the funding PSBT are too low");
}
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
var dlc = await GetDLC("name", name);
if (dlc?.OracleInfo is null || dlc?.BuilderState is null)
{
throw new CommandException("name", "This DLC does not exist");
}
var str = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("transaction")?.Trim();
if (str is null)
{
throw new CommandOptionRequiredException("transaction");
}
if (!Transaction.TryParse(str, Network, out var tx) || tx is null)
{
throw new CommandException("transaction", "Cannot parse the transaction");
}
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
try
{
var key = builder.ExtractAttestation(tx);
await Repository.AddAttestation(dlc.OracleInfo, key);
context.Console.Out.Write(key.ToHex());
}
catch (Exception ex)
{
throw new CommandException("transaction", $"Impossible to extract the attestation from this transaction. {ex.Message}");
}
}
public void CanValidateCETSigs()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var accept = Parse <Messages.Accept>("Data/Accept2.json");
var sign = Parse <Messages.Sign>("Data/Sign2.json");
var funding = Transaction.Parse("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", Network.Main);
var cet = Transaction.Parse("02000000000101ef43cda2f4e8fb1e254864a00b3b81f4915b9c8d060e41fe37523001ac03a08a0000000000feffffff0100e1f505000000001600145e8bf52af230ae61e9637ecb498a5bed8d09a59b04004730440220131ff77ab066d7bfa682691ca70ec9d229dc8e595c4055ddf23468fbed981bf602205c3a0d6b1bfb46da00ed8aad93498ece2d621a0eeacf7e30654be5135d773f0001483045022100efba114529a59517e7c39f6e38fb1c44bd935a8fe6ec63ab15e7a1912bc8b7aa02204a5d54d7f15adf102bb61fc9e4cf174c5a6be212f3c64b74687c6a717ae9104b0147522103fbae911c3acb17f06a9a544f068d925715900c69d0c58408543c09e75ba249332103f81ee1a50b2b01ce32982b2900c34f0c3a3745e98458e67ecf239086f4e8908852ae64000000", Network.Main);
foreach (var input in cet.Inputs)
{
input.WitScript = WitScript.Empty;
}
foreach (var isInitiator in new[] { true, false })
{
var b = new DLCTransactionBuilder(isInitiator, offer, accept, sign, Network.RegTest);
b.FundingOverride = funding;
var actualCet = b.BuildCET(offer.ContractInfo[0].Outcome);
Assert.Equal(cet.ToString(), actualCet.ToString());
Assert.True(b.VerifyRemoteCetSigs());
Assert.True(b.VerifyRemoteRefundSignature());
}
}
public void FullExchange()
{
var offerExample = Parse <Messages.Offer>("Data/Offer2.json");
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var fund1 = GetFundingPSBT(initiatorInputKey, Money.Coins(0.6m));
var fund2 = GetFundingPSBT(acceptorInputKey, Money.Coins(0.4m));
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var offer = initiator.Offer(PSBTFundingTemplate.Parse(fund1), offerExample.OracleInfo, offerExample.ContractInfo, offerExample.Timeouts);
var accept = acceptor.Accept(offer, PSBTFundingTemplate.Parse(fund2));
initiator.VerifySign(accept);
var fundPSBT = initiator.BuildFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.EndSign(fundPSBT);
acceptor.VerifySign(sign);
fundPSBT = acceptor.BuildFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
fundPSBT = acceptor.CombineFunding(fundPSBT);
fundPSBT = fundPSBT.Finalize();
var fullyVerified = fundPSBT.ExtractTransaction();
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
if (fundPSBT.TryGetEstimatedFeeRate(out var estimated))
{
Assert.True(estimated > new FeeRate(1.0m), "Fee Rate of the funding PSBT are too low");
}
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var offer = DLCHelpers.GetOffer(context, Repository.JsonSettings);
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
if (await this.TryGetDLC(name) != null)
{
throw new CommandException("name", "This DLC already exists");
}
if (offer.OracleInfo is null)
{
throw new CommandException("offer", "Missing oracleInfo");
}
if (offer.Timeouts is null)
{
throw new CommandException("offer", "Missing timeouts");
}
if (offer.ContractInfo is null)
{
throw new CommandException("offer", "Missing contractInfos");
}
var oracle = await Repository.GetOracle(offer.OracleInfo.PubKey);
if (oracle is null)
{
throw new CommandException("offer", "Unknown oracle");
}
var evt = await Repository.GetEvent(offer.OracleInfo.PubKey, offer.OracleInfo.RValue);
if (evt is null)
{
throw new CommandException("offer", "Unknown event");
}
var maturity = new LockTimeEstimation(offer.Timeouts.ContractMaturity, Network);
var refund = new LockTimeEstimation(offer.Timeouts.ContractTimeout, Network);
if (!refund.UnknownEstimation)
{
if (refund.EstimatedRemainingBlocks == 0)
{
throw new CommandException("offer", "The refund should not be immediately valid");
}
if (refund.EstimatedRemainingBlocks < maturity.EstimatedRemainingBlocks)
{
throw new CommandException("offer", "The refund should not be valid faster than the contract execution transactions");
}
}
offer.SetContractPreimages(evt.Outcomes);
try
{
var builder = new DLCTransactionBuilder(false, null, null, null, Network);
builder.Accept(offer);
var dlc = await Repository.NewDLC(offer.OracleInfo, builder);
dlc.BuilderState = builder.ExportStateJObject();
dlc.Offer = JObject.FromObject(offer, JsonSerializer.Create(Repository.JsonSettings));
await NameRepository.AsDLCNameRepository().SetMapping(name, dlc.Id);
await Repository.SaveDLC(dlc);
context.Console.Out.Write($"Contract accepted, you now need to setup the DLC. For more information, run `dlc show \"{name}\"`.");
}
catch (Exception ex)
{
throw new CommandException("offer", $"Invalid offer or PSBT. ({ex.Message})");
}
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
var dlc = await GetDLC("name", name);
if (dlc?.BuilderState is null ||
dlc?.OracleInfo is null)
{
throw new CommandException("name", "This DLC does not exist");
}
var oracle = await Repository.GetOracle(dlc.OracleInfo.PubKey);
string?oracleName = null;
EventFullName eventName = new EventFullName("???", "???");
if (oracle != null)
{
oracleName = await NameRepository.GetName(Scopes.Oracles, new OracleId(dlc.OracleInfo.PubKey).ToString());
var ev = await Repository.GetEvent(dlc.OracleInfo);
eventName = await NameRepository.AsEventRepository().ResolveName(dlc.OracleInfo) ?? eventName;
}
var shown = ParseShownItem(context);
if (shown == ShowOption.DLC)
{
context.Console.Out.WriteLine($"Name: {name}");
context.Console.Out.WriteLine($"Local Id: {dlc.Id}");
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
var role = builder.State.IsInitiator ? "Offerer" : "Acceptor";
context.Console.Out.WriteLine($"Event: {eventName}");
context.Console.Out.WriteLine($"Role: {role}");
var nextStep = dlc.GetNextStep(Network);
context.Console.Out.WriteLine($"Next step: {nextStep}");
context.Console.Out.WriteLine($"Next step explanation:");
context.Console.Out.Write($"{Explain(nextStep, name, builder.State)}");
}
else if (shown == ShowOption.Offer)
{
if (dlc.Offer is null)
{
throw new CommandException("offer", "No offer available for this DLC");
}
context.WriteObject(dlc.Offer, Repository.JsonSettings);
}
else if (shown == ShowOption.Accept)
{
if (dlc.Accept is null)
{
throw new CommandException("offer", "No accept message available for this DLC");
}
context.WriteObject(dlc.Accept, Repository.JsonSettings);
}
else if (shown == ShowOption.Funding)
{
try
{
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
context.WritePSBT(builder.GetFundingPSBT());
}
catch
{
throw new CommandException("funding", "No funding PSBT ready for this DLC");
}
}
else if (shown == ShowOption.Abort)
{
if (dlc.Abort is null)
{
throw new CommandException("abort", "No abort PSBT for this DLC");
}
context.WritePSBT(dlc.Abort);
}
else if (shown == ShowOption.Refund)
{
try
{
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
context.WriteTransaction(builder.BuildRefund(), Network);
}
catch
{
throw new CommandException("refund", "No refund PSBT ready for this DLC");
}
}
else
{
throw new NotSupportedException();
}
}
public static JObject ExportStateJObject(this DLCTransactionBuilder builder)
{
return(JObject.Parse(builder.ExportState()));
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
var dlc = await GetDLC("name", name);
if (dlc?.OracleInfo is null)
{
throw new CommandException("name", "This DLC does not exist");
}
if (dlc.BuilderState is null || dlc.FundKeyPath is null)
{
throw new CommandException("name", "This DLC is not in the right state to get executed");
}
var evt = await Repository.GetEvent(dlc.OracleInfo.PubKey, dlc.OracleInfo.RValue);
var attestation = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("attestation")?.Trim();
Key oracleKey;
try
{
if (attestation is null)
{
var k = evt?.Attestations?.Select(o => o.Value).FirstOrDefault();
if (k is null)
{
throw new CommandOptionRequiredException("attestation");
}
oracleKey = k;
}
else
{
oracleKey = new Key(Encoders.Hex.DecodeData(attestation));
}
}
catch (CommandOptionRequiredException)
{
throw;
}
catch
{
throw new CommandException("attestation", "Cannot parse the attestation");
}
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
var key = await Repository.GetKey(dlc.FundKeyPath);
try
{
var execution = builder.Execute(key, oracleKey);
if (evt is Repository.Event)
{
await Repository.AddAttestation(dlc.OracleInfo, oracleKey);
}
context.WriteTransaction(execution.CET, Network);
}
catch (Exception ex)
{
throw new CommandException("attestation", $"Error while building the CET. ({ex.Message})");
}
}