private bool Contract_Create(ExecutionEngine engine)
{
if (Trigger != TriggerType.Application)
{
return(false);
}
byte[] script = engine.CurrentContext.EvaluationStack.Pop().GetByteArray();
if (script.Length > 1024 * 1024)
{
return(false);
}
ContractPropertyState contract_properties = (ContractPropertyState)(byte)engine.CurrentContext.EvaluationStack.Pop().GetBigInteger();
UInt160 hash = script.ToScriptHash();
ContractState contract = Snapshot.Contracts.TryGet(hash);
if (contract == null)
{
contract = new ContractState
{
Script = script,
ContractProperties = contract_properties
};
Snapshot.Contracts.Add(hash, contract);
ContractsCreated.Add(hash, new UInt160(engine.CurrentContext.ScriptHash));
}
engine.CurrentContext.EvaluationStack.Push(StackItem.FromInterface(contract));
return(true);
}
private bool Contract_Migrate(ExecutionEngine engine)
{
if (Trigger != TriggerType.Application)
{
return(false);
}
byte[] script = engine.CurrentContext.EvaluationStack.Pop().GetByteArray();
if (script.Length > 1024 * 1024)
{
return(false);
}
ContractPropertyState contract_properties = (ContractPropertyState)(byte)engine.CurrentContext.EvaluationStack.Pop().GetBigInteger();
UInt160 hash = script.ToScriptHash();
ContractState contract = Snapshot.Contracts.TryGet(hash);
if (contract == null)
{
contract = new ContractState
{
Script = script,
ContractProperties = contract_properties
};
Snapshot.Contracts.Add(hash, contract);
ContractsCreated.Add(hash, new UInt160(engine.CurrentContext.ScriptHash));
if (contract.HasStorage)
{
foreach (var pair in Snapshot.Storages.Find(engine.CurrentContext.ScriptHash).ToArray())
{
Snapshot.Storages.Add(new StorageKey
{
ScriptHash = hash,
Key = pair.Key.Key
}, new StorageItem
{
Value = pair.Value.Value,
IsConstant = false
});
}
}
}
engine.CurrentContext.EvaluationStack.Push(StackItem.FromInterface(contract));
return(Contract_Destroy(engine));
}
private bool Contract_Migrate(ExecutionEngine engine)
{
if (Trigger != TriggerType.Application)
{
return(false);
}
byte[] script = engine.CurrentContext.EvaluationStack.Pop().GetByteArray();
if (script.Length > 1024 * 1024)
{
return(false);
}
ContractParameterType[] parameter_list = engine.CurrentContext.EvaluationStack.Pop().GetByteArray().Select(p => (ContractParameterType)p).ToArray();
if (parameter_list.Length > 252)
{
return(false);
}
ContractParameterType return_type = (ContractParameterType)(byte)engine.CurrentContext.EvaluationStack.Pop().GetBigInteger();
ContractPropertyState contract_properties = (ContractPropertyState)(byte)engine.CurrentContext.EvaluationStack.Pop().GetBigInteger();
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string name = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string version = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string author = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string email = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 65536)
{
return(false);
}
string description = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
UInt160 hash = script.ToScriptHash();
ContractState contract = Snapshot.Contracts.TryGet(hash);
if (contract == null)
{
contract = new ContractState
{
Script = script,
ParameterList = parameter_list,
ReturnType = return_type,
ContractProperties = contract_properties,
Name = name,
CodeVersion = version,
Author = author,
Email = email,
Description = description
};
Snapshot.Contracts.Add(hash, contract);
ContractsCreated.Add(hash, new UInt160(engine.CurrentContext.ScriptHash));
if (contract.HasStorage)
{
foreach (var pair in Snapshot.Storages.Find(engine.CurrentContext.ScriptHash).ToArray())
{
Snapshot.Storages.Add(new StorageKey
{
ScriptHash = hash,
Key = pair.Key.Key
}, new StorageItem
{
Value = pair.Value.Value,
IsConstant = false
});
}
}
}
engine.CurrentContext.EvaluationStack.Push(StackItem.FromInterface(contract));
return(Contract_Destroy(engine));
}
protected bool Contract_Migrate(ExecutionEngine engine)
{
if (Trigger != TriggerType.Application)
{
return(false);
}
byte[] script = engine.CurrentContext.EvaluationStack.Pop().GetByteArray();
if (script.Length > 1024 * 1024)
{
return(false);
}
ContractParameterType[] parameter_list = engine.CurrentContext.EvaluationStack.Pop().GetByteArray().Select(p => (ContractParameterType)p).ToArray();
if (parameter_list.Length > 252)
{
return(false);
}
ContractParameterType return_type = (ContractParameterType)(byte)engine.CurrentContext.EvaluationStack.Pop().GetBigInteger();
ContractPropertyState contract_properties = (ContractPropertyState)(byte)engine.CurrentContext.EvaluationStack.Pop().GetBigInteger();
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string name = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string version = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string author = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 252)
{
return(false);
}
string email = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
if (engine.CurrentContext.EvaluationStack.Peek().GetByteArray().Length > 65536)
{
return(false);
}
string description = Encoding.UTF8.GetString(engine.CurrentContext.EvaluationStack.Pop().GetByteArray());
// 在应用链上更改合约要检查应用链的类型设置和所有员签名
if (!Snapshot.Blockchain.ChainHash.Equals(UInt160.Zero))
{
AppChainState state = Snapshot.AppChainState.GetAndChange();
if (state.Hash == null)
{
return(false);
}
// 对于私有链，只有应用链的所有者有权限发布合约
if (state.Type.HasFlag(AppChainType.Private) && !CheckWitness(engine, state.Owner))
{
return(false);
}
}
UInt160 hash = script.ToScriptHash();
ContractState contract = Snapshot.Contracts.TryGet(hash);
if (contract == null)
{
contract = new ContractState
{
Script = script,
ParameterList = parameter_list,
ReturnType = return_type,
ContractProperties = contract_properties,
Name = name,
CodeVersion = version,
Author = author,
Email = email,
Description = description
};
Snapshot.Contracts.Add(hash, contract);
ContractsCreated.Add(hash, new UInt160(engine.CurrentContext.ScriptHash));
if (contract.HasStorage)
{
foreach (var pair in Snapshot.Storages.Find(engine.CurrentContext.ScriptHash).ToArray())
{
Snapshot.Storages.Add(new StorageKey
{
ScriptHash = hash,
Key = pair.Key.Key
}, new StorageItem
{
Value = pair.Value.Value,
IsConstant = false
});
}
}
}
engine.CurrentContext.EvaluationStack.Push(StackItem.FromInterface(contract));
return(Contract_Destroy(engine));
}