public override UInt160[] GetScriptHashesForVerifying()
{
HashSet <UInt160> hashes = new HashSet <UInt160>(base.GetScriptHashesForVerifying());
foreach (TransactionResult result in GetTransactionResults().Where(p => p.Amount < Fixed8.Zero))
{
AssetState asset = Blockchain.Default.GetAssetState(result.AssetId);
if (asset == null)
{
throw new InvalidOperationException();
}
hashes.Add(asset.Issuer);
}
return(hashes.OrderBy(p => p).ToArray());
}
public virtual UInt160[] GetScriptHashesForVerifying()
{
if (References == null)
{
throw new InvalidOperationException();
}
HashSet <UInt160> hashes = new HashSet <UInt160>(Inputs.Select(p => References[p].ScriptHash));
hashes.UnionWith(Attributes.Where(p => p.Usage == TransactionAttributeUsage.Script).Select(p => new UInt160(p.Data)));
foreach (var group in Outputs.GroupBy(p => p.AssetId))
{
AssetState asset = Blockchain.Default.GetAssetState(group.Key);
if (asset == null)
{
throw new InvalidOperationException();
}
if (asset.AssetType.HasFlag(AssetType.DutyFlag))
{
hashes.UnionWith(group.Select(p => p.ScriptHash));
}
}
return(hashes.OrderBy(p => p).ToArray());
}
public override bool Verify(IEnumerable <Transaction> mempool)
{
// Check Token Type
for (int i = 0; i < byJoinSplit.Count; i++)
{
UInt256 AssetID = Asset_ID(i);
AssetState asset = Blockchain.Default.GetAssetState(AssetID);
if (asset.AssetType == AssetType.TransparentToken)
{
return(false);
}
}
// Check double spend about tranparent input
for (int i = 1; i < Inputs.Length; i++)
{
for (int j = 0; j < i; j++)
{
if (Inputs[i].PrevHash == Inputs[j].PrevHash && Inputs[i].PrevIndex == Inputs[j].PrevIndex)
{
return(false);
}
}
}
if (mempool.Where(p => p != this).SelectMany(p => p.Inputs).Intersect(Inputs).Count() > 0)
{
return(false);
}
if (Blockchain.Default.IsDoubleSpend(this))
{
return(false);
}
if (Blockchain.Default.IsDoubleNullifier(this))
{
return(false);
}
Fixed8 assetFee = Fixed8.Zero;
Fixed8 qrsAssetFee = Fixed8.Zero;
// Check output format
foreach (var group in Outputs.GroupBy(p => p.AssetId))
{
AssetState asset = Blockchain.Default.GetAssetState(group.Key);
if (asset == null)
{
return(false);
}
if (asset.Expiration <= Blockchain.Default.Height + 1 && asset.AssetType != AssetType.GoverningToken && asset.AssetType != AssetType.UtilityToken)
{
return(false);
}
foreach (TransactionOutput output in group)
{
if (output.Value.GetData() % (long)Math.Pow(10, 8 - asset.Precision) != 0)
{
return(false);
}
}
}
TransactionResult[] results_transparent = GetTransactionResults()?.ToArray();
List <TransactionResult> results_anonymous = new List <TransactionResult>();
for (int i = 0; i < this.byJoinSplit.Count; i++)
{
bool isAdded = false;
for (int j = 0; j < results_anonymous.Count; j++)
{
if (results_anonymous[j].AssetId == this.Asset_ID(i))
{
results_anonymous[j].Amount -= this.vPub_Old(i);
results_anonymous[j].Amount += this.vPub_New(i);
isAdded = true;
break;
}
}
if (isAdded == false)
{
TransactionResult anonyItem = new TransactionResult();
anonyItem.AssetId = this.Asset_ID(i);
anonyItem.Amount = this.vPub_New(i) - this.vPub_Old(i);
results_anonymous.Add(anonyItem);
}
AssetState asset = Blockchain.Default.GetAssetState(this.Asset_ID(i));
}
TransactionResult[] results = results_anonymous.Select(p => new
{
AssetId = p.AssetId,
Value = p.Amount
}).Concat(results_transparent.Select(p => new
{
AssetId = p.AssetId,
Value = p.Amount
})).GroupBy(p => p.AssetId, (k, g) => new TransactionResult
{
AssetId = k,
Amount = g.Sum(p => p.Value)
}).Where(p => p.Amount != Fixed8.Zero)?.ToArray();
if (results == null)
{
return(false);
}
TransactionResult[] results_destroy_temp = results.Where(p => p.Amount > Fixed8.Zero).ToArray();
TransactionResult[] results_destroy = results_destroy_temp.Where(p => p.Amount > Fixed8.Zero).ToArray();
Fixed8 result_qrs_fee = Fixed8.Zero;
Fixed8 result_qrg_fee = Fixed8.Zero;
Fixed8 result_other_fee = Fixed8.Zero;
for (int i = 0; i < results_destroy.Length; i++)
{
if (results_destroy[i].AssetId == Blockchain.GoverningToken.Hash)
{
result_qrs_fee = results_destroy[i].Amount;
}
else if (results_destroy[i].AssetId == Blockchain.UtilityToken.Hash)
{
result_qrg_fee = results_destroy[i].Amount;
}
else
{
result_other_fee = results_destroy[i].Amount;
}
}
if (result_other_fee > Fixed8.Zero || (SystemFee > result_qrg_fee && assetFee > Fixed8.Zero))
{
return(false);
}
TransactionResult[] results_issue = results.Where(p => p.Amount < Fixed8.Zero).ToArray();
switch (Type)
{
case TransactionType.MinerTransaction:
case TransactionType.ClaimTransaction:
if (results_issue.Any(p => p.AssetId != Blockchain.UtilityToken.Hash))
{
return(false);
}
break;
case TransactionType.IssueTransaction:
if (results_issue.Any(p => p.AssetId == Blockchain.UtilityToken.Hash))
{
return(false);
}
break;
default:
if (results_issue.Length > 0)
{
return(false);
}
break;
}
if (Attributes.Count(p => p.Usage == TransactionAttributeUsage.ECDH02 || p.Usage == TransactionAttributeUsage.ECDH03) > 1)
{
return(false);
}
if (!Sodium.PublicKeyAuth.VerifyDetached(joinSplitSig, JsHash.ToArray(), joinSplitPubKey.ToArray()))
{
return(false);
}
for (int i = 0; i < byJoinSplit.Count; i++)
{
if (!SnarkDllApi.Snark_JSVerify(byJoinSplit[i], joinSplitPubKey.ToArray()))
{
return(false);
}
}
if (Inputs.Length > 0)
{
return(this.VerifyScripts());
}
else
{
return(true);
}
}
public static Dictionary <UInt256, Fixed8> CalculateNetFee(IEnumerable <Transaction> transactions)
{
Dictionary <UInt256, Fixed8> ret = new Dictionary <UInt256, Fixed8>();
#region Calculate QRG fee
{
Transaction[] ats = transactions.Where(p => p.Type == TransactionType.AnonymousContractTransaction).ToArray();
Transaction[] ars = transactions.Where(p => p.Type == TransactionType.RingConfidentialTransaction).ToArray();
foreach (var arx in ars)
{
if (arx is RingConfidentialTransaction)
{
var ringTR = arx as RingConfidentialTransaction;
if (ringTR.RingCTSig.Count > 0)
{
AssetState asset = Blockchain.Default.GetAssetState(ringTR.RingCTSig[0].AssetID);
if (ret.ContainsKey(asset.AssetId))
{
ret[asset.AssetId] += asset.AFee;
}
else
{
ret[asset.AssetId] = asset.AFee;
}
}
}
}
foreach (var atx in ats)
{
if (atx is AnonymousContractTransaction)
{
var formatedTx = atx as AnonymousContractTransaction;
if (formatedTx.Outputs.Length > 0)
{
AssetState asset = Blockchain.Default.GetAssetState(formatedTx.Outputs[0].AssetId);
if (ret.ContainsKey(asset.AssetId))
{
ret[asset.AssetId] += asset.AFee;
}
else
{
ret[asset.AssetId] = asset.AFee;
}
}
else
{
AssetState asset = Blockchain.Default.GetAssetState(((AnonymousContractTransaction)formatedTx).Asset_ID(0));
if (ret.ContainsKey(asset.AssetId))
{
ret[asset.AssetId] += asset.AFee;
}
else
{
ret[asset.AssetId] = asset.AFee;
}
}
}
}
Transaction[] invocationTxs = transactions.Where(p => p.Type == TransactionType.InvocationTransaction).ToArray();
foreach (var tx in invocationTxs)
{
if (ret.ContainsKey(Blockchain.UtilityToken.Hash))
{
ret[Blockchain.UtilityToken.Hash] += ((InvocationTransaction)tx).Gas.Equals(Fixed8.Zero) ? tx.NetworkFee : ((InvocationTransaction)tx).Gas;
}
else
{
ret[Blockchain.UtilityToken.Hash] = ((InvocationTransaction)tx).Gas.Equals(Fixed8.Zero) ? tx.NetworkFee : ((InvocationTransaction)tx).Gas;
}
}
Transaction[] issueTxs = transactions.Where(p => p.Type == TransactionType.IssueTransaction).ToArray();
foreach (var tx in issueTxs)
{
IssueTransaction tempTx = (IssueTransaction)tx;
if (ret.ContainsKey(Blockchain.UtilityToken.Hash))
{
ret[Blockchain.UtilityToken.Hash] += tempTx.NetworkFee + tempTx.SystemFee;
}
else
{
ret[Blockchain.UtilityToken.Hash] = tempTx.NetworkFee + tempTx.SystemFee;
}
}
Transaction[] feeTxs = transactions.Where(p => p.Type != TransactionType.MinerTransaction &&
p.Type != TransactionType.ClaimTransaction &&
p.Type != TransactionType.AnonymousContractTransaction &&
p.Type != TransactionType.RingConfidentialTransaction &&
p.Type != TransactionType.InvocationTransaction &&
p.Type != TransactionType.IssueTransaction).ToArray();
foreach (var tx in feeTxs)
{
Dictionary <UInt256, Fixed8> fee = new Dictionary <UInt256, Fixed8>();
foreach (var txOut in tx.Outputs)
{
if (!ret.ContainsKey(txOut.AssetId))
{
ret[txOut.AssetId] = txOut.Fee;
}
else
{
ret[txOut.AssetId] += txOut.Fee;
}
}
}
}
#endregion
Dictionary <UInt256, Fixed8> retFees = new Dictionary <UInt256, Fixed8>();
foreach (var key in ret.Keys)
{
if (ret[key] > Fixed8.Zero)
{
retFees[key] = ret[key];
}
}
return(retFees);
}
public bool Verify(bool completely)
{
if (!Verify())
{
return(false);
}
if (Transactions[0].Type != TransactionType.MinerTransaction || Transactions.Skip(1).Any(p => p.Type == TransactionType.MinerTransaction))
{
return(false);
}
if (completely)
{
if (NextConsensus != Blockchain.GetConsensusAddress(Blockchain.Default.GetValidators(Transactions).ToArray()))
{
return(false);
}
foreach (Transaction tx in Transactions)
{
if (!tx.Verify(Transactions.Where(p => !p.Hash.Equals(tx.Hash))))
{
return(false);
}
}
Transaction tx_gen = Transactions.FirstOrDefault(p => p.Type == TransactionType.MinerTransaction);
Dictionary <UInt256, Fixed8> assetFee = CalculateNetFee(Transactions);
foreach (var key in assetFee.Keys)
{
AssetState asset = Blockchain.Default.GetAssetState(key);
if (asset.AssetId == Blockchain.GoverningToken.Hash)
{
if (tx_gen?.Outputs.Where(p => p.AssetId == Blockchain.GoverningToken.Hash).Sum(p => p.Value) != assetFee[key])
{
return(false);
}
}
else if (asset.AssetId == Blockchain.UtilityToken.Hash)
{
if (tx_gen?.Outputs.Where(p => p.AssetId == Blockchain.UtilityToken.Hash).Sum(p => p.Value) != assetFee.Where(p => p.Key != Blockchain.GoverningToken.Hash).Sum(p => p.Value))
{
return(false);
}
}
else
{
Fixed8 consensusFee = Fixed8.Zero;
Fixed8 assetOwnerFee = Fixed8.Zero;
if (assetFee[key] <= Fixed8.Satoshi * 10000000)
{
consensusFee = assetFee[key] * 8 / 10;
assetOwnerFee = assetFee[key] * 2 / 10;
}
else if (assetFee[key] < Fixed8.FromDecimal(1))
{
consensusFee = assetFee[key] * 75 / 100;
assetOwnerFee = assetFee[key] * 25 / 100;
}
else if (assetFee[key] < Fixed8.FromDecimal(5))
{
consensusFee = assetFee[key] * 7 / 10;
assetOwnerFee = assetFee[key] * 3 / 10;
}
else if (assetFee[key] < Fixed8.FromDecimal(10))
{
consensusFee = assetFee[key] * 65 / 100;
assetOwnerFee = assetFee[key] * 35 / 100;
}
else
{
consensusFee = assetFee[key] * 6 / 10;
assetOwnerFee = assetFee[key] * 4 / 10;
}
if (tx_gen?.Outputs.Where(p => p.ScriptHash == asset.FeeAddress).Sum(p => p.Value) != assetOwnerFee)
{
return(false);
}
}
}
// if (tx_gen?.Outputs.Sum(p => p.Value) != CalculateNetFee(Transactions)) return false;
}
return(true);
}
public override bool Verify(IEnumerable <Transaction> mempool)
{
switch (GetTxType())
{
case RingConfidentialTransactionType.S_S_Transaction:
for (int i = 0; i < RingCTSig.Count; i++)
{
if (!RingCT.Impls.RingCTSignature.Verify(RingCTSig[i], Fixed8.Zero))
{
return(false);
}
// Double Spending Check
if (Blockchain.Default.IsDoubleRingCTCommitment(this))
{
return(false);
}
// Check Mix Rings Link & Asset
UInt256 assetID = RingCTSig[i].AssetID;
for (int j = 0; j < RingCTSig[i].mixRing.Count; j++)
{
for (int k = 0; k < RingCTSig[i].mixRing[j].Count; k++)
{
Transaction tx = Blockchain.Default.GetTransaction(RingCTSig[i].mixRing[j][k].txHash);
if (tx is RingConfidentialTransaction rtx)
{
if (rtx.RingCTSig[RingCTSig[i].mixRing[j][k].RingCTIndex].AssetID != assetID)
{
//AssetState asset_open = Blockchain.Default.GetAssetState(rtx.RingCTSig[RingCTSig[i].mixRing[j][k].RingCTIndex].AssetID);
AssetState asset_send = Blockchain.Default.GetAssetState(assetID);
if (!(asset_send.AssetType == AssetType.StealthToken &&
rtx.RingCTSig[RingCTSig[i].mixRing[j][k].RingCTIndex].AssetID == Blockchain.StealthNormalHash))
{
return(false);
}
}
}
else
{
return(false);
}
}
}
}
break;
case RingConfidentialTransactionType.S_T_Transaction:
// Check Amount
try
{
Dictionary <UInt256, Fixed8> amount = new Dictionary <UInt256, Fixed8>();
UInt256 mainAssetId = null;
for (int i = 0; i < Outputs.Length; i++)
{
if (amount.ContainsKey(Outputs[i].AssetId))
{
amount[Outputs[i].AssetId] += Outputs[i].Value;
}
else
{
mainAssetId = Outputs[i].AssetId;
amount[Outputs[i].AssetId] = Outputs[i].Value;
}
}
for (int i = 0; i < RingCTSig.Count; i++)
{
if (!RingCT.Impls.RingCTSignature.Verify(RingCTSig[i], Fixed8.Zero))
{
return(false);
}
// Double Spending Check
if (Blockchain.Default.IsDoubleRingCTCommitment(this))
{
return(false);
}
if (amount.ContainsKey(RingCTSig[i].AssetID))
{
amount[RingCTSig[i].AssetID] -= RingCTSig[i].vPub;
}
else if (i == RingCTSig.Count - 1 && RingCTSig[i].AssetID == Blockchain.UtilityToken.Hash && RingCTSig[i].vPub != Fixed8.Zero)
{
amount[RingCTSig[i].AssetID] = Fixed8.Zero - RingCTSig[i].vPub;
}
else
{
return(false);
}
}
if (SystemFee > Fixed8.Zero)
{
if (mainAssetId.Equals(Blockchain.UtilityToken.Hash) || mainAssetId.Equals(Blockchain.GoverningToken.Hash))
{
amount[Blockchain.UtilityToken.Hash] += Blockchain.UtilityToken.A_Fee;
}
else
{
AssetState asset = Blockchain.Default.GetAssetState(mainAssetId);
amount[Blockchain.UtilityToken.Hash] += asset.AFee;
}
}
foreach (var key in amount.Keys)
{
if (amount[key] > Fixed8.Zero)
{
return(false);
}
}
}
catch (Exception ex)
{
return(false);
}
break;
case RingConfidentialTransactionType.T_S_Transaction:
for (int i = 0; i < RingCTSig.Count; i++)
{
Fixed8 vPubOld = Fixed8.Zero;
for (int j = 0; j < Inputs.Length; j++)
{
Transaction tx = Blockchain.Default.GetTransaction(Inputs[j].PrevHash);
if (tx.Outputs[Inputs[j].PrevIndex].AssetId.ToString() == RingCTSig[i].AssetID.ToString())
{
vPubOld += tx.Outputs[Inputs[j].PrevIndex].Value;
}
}
if (!RingCT.Impls.RingCTSignature.Verify(RingCTSig[i], vPubOld))
{
return(false);
}
// Check the amount
Fixed8 vPubOut = Fixed8.Zero;
for (int j = 0; j < Outputs.Length; j++)
{
if (Outputs[j].AssetId == RingCTSig[i].AssetID)
{
vPubOut += Outputs[j].Value;
}
}
Fixed8 vPrivOut = Fixed8.Zero;
for (int j = 0; j < RingCTSig[i].ecdhInfo.Count; j++)
{
vPrivOut += RingCTSig[i].ecdhInfo[j].amount.ToFixed8();
}
if (RingCTSig[i].AssetID == Blockchain.GoverningToken.Hash)
{
if (vPubOld < vPrivOut + vPubOut + QrsSystemFee)
{
return(false);
}
}
else if (RingCTSig[i].AssetID == Blockchain.UtilityToken.Hash)
{
if (vPubOld < vPrivOut + vPubOut + SystemFee)
{
return(false);
}
}
else
{
if (vPubOld < vPrivOut + vPubOut)
{
return(false);
}
}
}
break;
default:
break;
}
return(true);
}
public virtual bool Verify(IEnumerable <Transaction> mempool)
{
if (Type == TransactionType.ContractTransaction)
{
UInt160 toAddress = Outputs[0].ScriptHash;
bool isSelf = true;
for (int i = 1; i < Outputs.Length; i++)
{
if (toAddress != Outputs[i].ScriptHash)
{
isSelf = false;
break;
}
}
if (isSelf)
{
if (toAddress == References[Inputs[0]].ScriptHash)
{
return(false);
}
}
}
for (int i = 1; i < Inputs.Length; i++)
{
for (int j = 0; j < i; j++)
{
if (Inputs[i].PrevHash == Inputs[j].PrevHash && Inputs[i].PrevIndex == Inputs[j].PrevIndex)
{
return(false);
}
}
}
if (mempool.Where(p => p != this).SelectMany(p => p.Inputs).Intersect(Inputs).Count() > 0)
{
return(false);
}
if (is_consensus_mempool == false)
{
if (Blockchain.Default.IsDoubleSpend(this))
{
Console.WriteLine("double spent error"); return(false);
}
Fixed8 assetFee = Fixed8.Zero;
foreach (var group in Outputs.GroupBy(p => p.AssetId))
{
AssetState asset = Blockchain.Default.GetAssetState(group.Key);
if (asset == null)
{
return(false);
}
if (asset.Expiration <= Blockchain.Default.Height + 1 && asset.AssetType != AssetType.GoverningToken && asset.AssetType != AssetType.UtilityToken)
{
return(false);
}
foreach (TransactionOutput output in group)
{
if (output.Value.GetData() % (long)Math.Pow(10, 8 - asset.Precision) != 0)
{
return(false);
}
}
if (Type == TransactionType.ContractTransaction)
{
foreach (TransactionOutput output in group)
{
bool isOwn = false;
foreach (var refOutput in References.Values)
{
if (output.ScriptHash == refOutput.ScriptHash)
{
isOwn = true;
break;
}
}
if (isOwn == false)
{
assetFee += asset.Fee;
}
}
}
}
TransactionResult[] results = GetTransactionResults()?.ToArray();
if (results == null)
{
return(false);
}
TransactionResult[] results_destroy = results.Where(p => p.Amount > Fixed8.Zero).ToArray();
if (results_destroy.Length > 1)
{
return(false);
}
if (results_destroy.Length == 1 && results_destroy[0].AssetId != Blockchain.UtilityToken.Hash)
{
return(false);
}
if (SystemFee + assetFee > Fixed8.Zero && (results_destroy.Length == 0 || results_destroy[0].Amount < SystemFee))
{
return(false);
}
TransactionResult[] results_issue = results.Where(p => p.Amount < Fixed8.Zero).ToArray();
switch (Type)
{
case TransactionType.MinerTransaction:
if (results_issue.Any(p => p.AssetId != Blockchain.UtilityToken.Hash && p.AssetId != Blockchain.GoverningToken.Hash))
{
return(false);
}
break;
case TransactionType.ClaimTransaction:
if (results_issue.Any(p => p.AssetId != Blockchain.UtilityToken.Hash))
{
return(false);
}
break;
case TransactionType.IssueTransaction:
if (results_issue.Any(p => p.AssetId == Blockchain.UtilityToken.Hash))
{
return(false);
}
break;
case TransactionType.InvocationTransaction:
if (Outputs.Length <= 0)
{
return(false);
}
break;
default:
if (results_issue.Length > 0)
{
return(false);
}
break;
}
if (Attributes.Count(p => p.Usage == TransactionAttributeUsage.ECDH02 || p.Usage == TransactionAttributeUsage.ECDH03) > 1)
{
return(false);
}
Console.WriteLine("Verifying Scripts");
return(this.VerifyScripts());
}
return(true);
}