public override bool Verify() { if (!base.Verify()) { return(false); } if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes)) { return(false); } HashSet <ECPoint> pubkeys = new HashSet <ECPoint>(); foreach (UInt256 vote in Enrollments) { EnrollmentTransaction tx = Blockchain.Default.GetTransaction(vote) as EnrollmentTransaction; if (tx == null) { return(false); } if (!Blockchain.Default.ContainsUnspent(vote, 0)) { return(false); } if (!pubkeys.Add(tx.PublicKey)) { return(false); } } return(true); }
/// <summary> /// 验证交易 /// </summary> /// <returns>返回验证的结果</returns> public virtual bool Verify(IEnumerable <Transaction> mempool) { if (Blockchain.Default.ContainsTransaction(Hash)) { return(true); } if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes) || !Blockchain.Default.Ability.HasFlag(BlockchainAbility.TransactionIndexes)) { 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.SelectMany(p => p.Inputs).Intersect(Inputs).Count() > 0) { return(false); } if (Blockchain.Default.IsDoubleSpend(this)) { return(false); } foreach (var group in Outputs.GroupBy(p => p.AssetId)) { RegisterTransaction asset = Blockchain.Default.GetTransaction(group.Key) as RegisterTransaction; if (asset == null) { return(false); } foreach (TransactionOutput output in group) { if (output.Value.GetData() % (long)Math.Pow(10, 8 - asset.Precision) != 0) { return(false); } } } 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.AntCoin.Hash) { return(false); } if (SystemFee > 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: case TransactionType.ClaimTransaction: if (results_issue.Any(p => p.AssetId != Blockchain.AntCoin.Hash)) { return(false); } break; case TransactionType.IssueTransaction: if (results_issue.Any(p => p.AssetId == Blockchain.AntCoin.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 (Attributes.Count(p => p.Usage == TransactionAttributeUsage.Vote) > 1024) { return(false); } if (Attributes.Where(p => p.Usage == TransactionAttributeUsage.Vote).Select(p => new UInt256(p.Data)).Distinct().Count() != Attributes.Count(p => p.Usage == TransactionAttributeUsage.Vote)) { return(false); } if (Attributes.Any(p => p.Usage == TransactionAttributeUsage.Vote)) { if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes)) { return(false); } if (Outputs.All(p => !p.AssetId.Equals(Blockchain.AntShare.Hash))) { return(false); } HashSet <ECPoint> pubkeys = new HashSet <ECPoint>(); foreach (UInt256 vote in Attributes.Where(p => p.Usage == TransactionAttributeUsage.Vote).Select(p => new UInt256(p.Data))) { EnrollmentTransaction tx = Blockchain.Default.GetTransaction(vote) as EnrollmentTransaction; if (tx == null) { return(false); } if (!Blockchain.Default.ContainsUnspent(vote, 0)) { return(false); } if (!pubkeys.Add(tx.PublicKey)) { return(false); } } } return(this.VerifySignature()); }
/// <summary> /// 验证交易 /// </summary> /// <returns>返回验证的结果</returns> public virtual bool Verify() { if (Blockchain.Default.ContainsTransaction(Hash)) { return(true); } if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes) || !Blockchain.Default.Ability.HasFlag(BlockchainAbility.TransactionIndexes)) { return(false); } if (Blockchain.Default.IsDoubleSpend(this)) { return(false); } foreach (var group in Outputs.GroupBy(p => p.AssetId)) { RegisterTransaction asset = Blockchain.Default.GetTransaction(group.Key) as RegisterTransaction; if (asset == null) { return(false); } foreach (TransactionOutput output in group) { if (output.Value.GetData() % (long)Math.Pow(10, 8 - asset.Precision) != 0) { return(false); } } } 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.AntCoin.Hash) { return(false); } if (SystemFee > 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: case TransactionType.ClaimTransaction: if (results_issue.Any(p => p.AssetId != Blockchain.AntCoin.Hash)) { return(false); } break; case TransactionType.IssueTransaction: if (results_issue.Any(p => p.AssetId == Blockchain.AntCoin.Hash)) { return(false); } break; default: if (results_issue.Length > 0) { return(false); } break; } foreach (TransactionAttribute script in Attributes.Where(p => p.Usage == TransactionAttributeUsage.Script)) { ScriptEngine engine = new ScriptEngine(this, ECDsaCrypto.Default, Blockchain.Default, InterfaceEngine.Default); if (!engine.ExecuteScript(script.Data, false)) { return(false); } if (engine.Stack.Count != 1 || !engine.Stack.Pop()) { return(false); } } if (Attributes.Any(p => p.Usage == TransactionAttributeUsage.Vote)) { if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes)) { return(false); } HashSet <ECPoint> pubkeys = new HashSet <ECPoint>(); foreach (UInt256 vote in Attributes.Where(p => p.Usage == TransactionAttributeUsage.Vote).Select(p => new UInt256(p.Data))) { EnrollmentTransaction tx = Blockchain.Default.GetTransaction(vote) as EnrollmentTransaction; if (tx == null) { return(false); } if (!Blockchain.Default.ContainsUnspent(vote, 0)) { return(false); } if (!pubkeys.Add(tx.PublicKey)) { return(false); } } } return(this.VerifySignature()); }