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());
}
