public override 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 (UInt256 hash in Outputs.Select(p => p.AssetId).Distinct()) { if (!Blockchain.Default.ContainsAsset(hash)) { 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; } TransactionAttribute script = Attributes.FirstOrDefault(p => p.Usage == TransactionAttributeUsage.Script); if (script != null) { ScriptEngine engine = new ScriptEngine(new Script { StackScript = new byte[0], RedeemScript = script.Data }, this); if (!engine.Execute()) { return(false); } } return(this.VerifySignature()); }
/// <summary> /// 验证交易 /// </summary> /// <returns>返回验证的结果</returns> public override 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; } TransactionAttribute script = Attributes.FirstOrDefault(p => p.Usage == TransactionAttributeUsage.Script); if (script != null) { ScriptEngine engine = new ScriptEngine(new Script { StackScript = new byte[0], RedeemScript = script.Data }, this, InterfaceEngine.Default); if (!engine.Execute()) { return(false); } } return(this.VerifySignature()); }