private static ExecutionState Runtime_DeployContract(RuntimeVM vm)
{
var tx = vm.Transaction;
Throw.IfNull(tx, nameof(tx));
var pow = tx.Hash.GetDifficulty();
vm.Expect(pow >= (int)ProofOfWork.Minimal, "expected proof of work");
vm.ExpectStackSize(1);
var from = vm.PopAddress();
vm.Expect(from.IsUser, "address must be user");
if (vm.Nexus.HasGenesis)
{
//Runtime.Expect(org != DomainSettings.ValidatorsOrganizationName, "cannot deploy contract via this organization");
vm.Expect(vm.IsStakeMaster(from), "needs to be master");
}
vm.Expect(vm.IsWitness(from), "invalid witness");
var contractName = vm.PopString("contractName");
var contractAddress = SmartContract.GetAddressForName(contractName);
var deployed = vm.Chain.IsContractDeployed(vm.Storage, contractAddress);
// TODO
if (vm.ProtocolVersion >= 2)
{
vm.Expect(!deployed, $"{contractName} is already deployed");
}
else
if (deployed)
{
return(ExecutionState.Running);
}
byte[] script;
ContractInterface abi;
bool isNative = Nexus.IsNativeContract(contractName);
if (isNative)
{
if (contractName == "validator" && vm.GenesisAddress == Address.Null)
{
vm.Nexus.Initialize(from);
}
script = new byte[] { (byte)Opcode.RET };
var contractInstance = vm.Nexus.GetNativeContractByAddress(contractAddress);
abi = contractInstance.ABI;
}
else
{
if (ValidationUtils.IsValidTicker(contractName))
{
throw new VMException(vm, "use createToken instead for this kind of contract");
}
else
{
vm.Expect(ValidationUtils.IsValidIdentifier(contractName), "invalid contract name");
}
var isReserved = ValidationUtils.IsReservedIdentifier(contractName);
if (isReserved && vm.IsWitness(vm.GenesisAddress))
{
isReserved = false;
}
vm.Expect(!isReserved, $"name '{contractName}' reserved by system");
script = vm.PopBytes("contractScript");
var abiBytes = vm.PopBytes("contractABI");
abi = ContractInterface.FromBytes(abiBytes);
var fuelCost = vm.GetGovernanceValue(Nexus.FuelPerContractDeployTag);
// governance value is in usd fiat, here convert from fiat to fuel amount
fuelCost = vm.GetTokenQuote(DomainSettings.FiatTokenSymbol, DomainSettings.FuelTokenSymbol, fuelCost);
// burn the "cost" tokens
vm.BurnTokens(DomainSettings.FuelTokenSymbol, from, fuelCost);
}
// ABI validation
ValidateABI(vm, contractName, abi, isNative);
var success = vm.Chain.DeployContractScript(vm.Storage, from, contractName, contractAddress, script, abi);
vm.Expect(success, $"deployment of {contractName} failed");
var constructor = abi.FindMethod(SmartContract.ConstructorName);
if (constructor != null)
{
vm.CallContext(contractName, constructor, from);
}
vm.Notify(EventKind.ContractDeploy, from, contractName);
return(ExecutionState.Running);
}
private static ExecutionState Runtime_UpgradeContract(RuntimeVM vm)
{
var tx = vm.Transaction;
Throw.IfNull(tx, nameof(tx));
var pow = tx.Hash.GetDifficulty();
vm.Expect(pow >= (int)ProofOfWork.Minimal, "expected proof of work");
vm.ExpectStackSize(1);
var from = vm.PopAddress();
vm.Expect(from.IsUser, "address must be user");
vm.Expect(vm.IsStakeMaster(from), "needs to be master");
vm.Expect(vm.IsWitness(from), "invalid witness");
var contractName = vm.PopString("contractName");
var contractAddress = SmartContract.GetAddressForName(contractName);
var deployed = vm.Chain.IsContractDeployed(vm.Storage, contractAddress);
vm.Expect(deployed, $"{contractName} does not exist");
byte[] script;
ContractInterface abi;
bool isNative = Nexus.IsNativeContract(contractName);
vm.Expect(!isNative, "cannot upgrade native contract");
bool isToken = ValidationUtils.IsValidTicker(contractName);
script = vm.PopBytes("contractScript");
var abiBytes = vm.PopBytes("contractABI");
abi = ContractInterface.FromBytes(abiBytes);
var fuelCost = vm.GetGovernanceValue(Nexus.FuelPerContractDeployTag);
// governance value is in usd fiat, here convert from fiat to fuel amount
fuelCost = vm.GetTokenQuote(DomainSettings.FiatTokenSymbol, DomainSettings.FuelTokenSymbol, fuelCost);
// burn the "cost" tokens
vm.BurnTokens(DomainSettings.FuelTokenSymbol, from, fuelCost);
// ABI validation
ValidateABI(vm, contractName, abi, isNative);
SmartContract oldContract;
if (isToken)
{
oldContract = vm.Nexus.GetTokenContract(vm.Storage, contractName);
}
else
{
oldContract = vm.Chain.GetContractByName(vm.Storage, contractName);
}
vm.Expect(oldContract != null, "could not fetch previous contract");
vm.Expect(abi.Implements(oldContract.ABI), "new abi does not implement all methods of previous abi");
vm.Expect(vm.InvokeTrigger(false, script, contractName, abi, AccountTrigger.OnUpgrade.ToString(), from) == TriggerResult.Success, "OnUpgrade trigger failed");
if (isToken)
{
vm.Nexus.UpgradeTokenContract(vm.RootStorage, contractName, script, abi);
}
else
{
vm.Chain.UpgradeContract(vm.Storage, contractName, script, abi);
}
vm.Notify(EventKind.ContractUpgrade, from, contractName);
return(ExecutionState.Running);
}
public void AddBlock(Block block, IEnumerable <Transaction> transactions, BigInteger minimumFee)
{
/*if (CurrentEpoch != null && CurrentEpoch.IsSlashed(Timestamp.Now))
* {
* return false;
* }*/
if (LastBlock != null)
{
if (LastBlock.Height != block.Height - 1)
{
throw new BlockGenerationException($"height of block should be {LastBlock.Height + 1}");
}
if (block.PreviousHash != LastBlock.Hash)
{
throw new BlockGenerationException($"previous hash should be {LastBlock.PreviousHash}");
}
}
var inputHashes = new HashSet <Hash>(transactions.Select(x => x.Hash));
foreach (var hash in block.TransactionHashes)
{
if (!inputHashes.Contains(hash))
{
throw new BlockGenerationException($"missing in inputs transaction with hash {hash}");
}
}
var outputHashes = new HashSet <Hash>(block.TransactionHashes);
foreach (var tx in transactions)
{
if (!outputHashes.Contains(tx.Hash))
{
throw new BlockGenerationException($"missing in outputs transaction with hash {tx.Hash}");
}
}
foreach (var tx in transactions)
{
if (!tx.IsValid(this))
{
throw new InvalidTransactionException(tx.Hash, $"invalid transaction with hash {tx.Hash}");
}
}
var changeSet = new StorageChangeSetContext(this.Storage);
var oracle = Nexus.CreateOracleReader();
foreach (var tx in transactions)
{
byte[] result;
try
{
if (ExecuteTransaction(tx, block.Timestamp, changeSet, block.Notify, oracle, minimumFee, out result))
{
if (result != null)
{
block.SetResultForHash(tx.Hash, result);
}
}
else
{
throw new InvalidTransactionException(tx.Hash, $"execution failed");
}
}
catch (Exception e)
{
if (e.InnerException != null)
{
e = e.InnerException;
}
throw new InvalidTransactionException(tx.Hash, e.Message);
}
}
block.MergeOracle(oracle);
// from here on, the block is accepted
_blockHeightMap[block.Height] = block.Hash;
_blocks[block.Hash] = block;
_blockChangeSets[block.Hash] = changeSet;
changeSet.Execute();
Dictionary <string, BigInteger> synchMap = null;
foreach (Transaction tx in transactions)
{
_transactions[tx.Hash] = tx;
_transactionBlockMap[tx.Hash] = block.Hash;
var evts = block.GetEventsForTransaction(tx.Hash);
foreach (var evt in evts)
{
if (evt.Kind == EventKind.TokenMint || evt.Kind == EventKind.TokenBurn || evt.Kind == EventKind.TokenReceive || evt.Kind == EventKind.TokenSend)
{
var eventData = evt.GetContent <TokenEventData>();
var token = Nexus.GetTokenInfo(eventData.symbol);
if (!token.IsFungible())
{
// TODO support this
continue;
}
if (token.IsCapped())
{
BigInteger balance;
if (synchMap == null)
{
synchMap = new Dictionary <string, BigInteger>();
balance = 0;
}
else
{
balance = synchMap.ContainsKey(eventData.symbol) ? synchMap[eventData.symbol] : 0;
}
if (evt.Kind == EventKind.TokenBurn || evt.Kind == EventKind.TokenSend)
{
balance -= eventData.value;
}
else
{
balance += eventData.value;
}
synchMap[eventData.symbol] = balance;
}
}
}
}
if (synchMap != null)
{
SynchronizeSupplies(synchMap);
}
var blockValidator = GetValidatorForBlock(block);
if (blockValidator.IsNull)
{
throw new BlockGenerationException("no validator for this block");
}
Nexus.PluginTriggerBlock(this, block);
}
public OracleReader(Nexus nexus)
{
this.Nexus = nexus;
}
public BigInteger GetTokenBalance(StorageContext storage, string symbol, Address address)
{
var token = Nexus.GetTokenInfo(storage, symbol);
return(GetTokenBalance(storage, token, address));
}
public void AddBlock(Block block, IEnumerable <Transaction> transactions, BigInteger minimumFee, StorageChangeSetContext changeSet)
{
if (!block.IsSigned)
{
throw new BlockGenerationException($"block must be signed");
}
var unsignedBytes = block.ToByteArray(false);
if (!block.Signature.Verify(unsignedBytes, block.Validator))
{
throw new BlockGenerationException($"block signature does not match validator {block.Validator.Text}");
}
var hashList = new StorageList(BlockHeightListTag, this.Storage);
var expectedBlockHeight = hashList.Count() + 1;
if (expectedBlockHeight != block.Height)
{
throw new ChainException("unexpected block height");
}
// from here on, the block is accepted
using (var m = new ProfileMarker("changeSet.Execute"))
changeSet.Execute();
hashList.Add <Hash>(block.Hash);
using (var m = new ProfileMarker("Compress"))
{
var blockMap = new StorageMap(BlockHashMapTag, this.Storage);
var blockBytes = block.ToByteArray(true);
blockBytes = CompressionUtils.Compress(blockBytes);
blockMap.Set <Hash, byte[]>(block.Hash, blockBytes);
var txMap = new StorageMap(TransactionHashMapTag, this.Storage);
var txBlockMap = new StorageMap(TxBlockHashMapTag, this.Storage);
foreach (Transaction tx in transactions)
{
var txBytes = tx.ToByteArray(true);
txBytes = CompressionUtils.Compress(txBytes);
txMap.Set <Hash, byte[]>(tx.Hash, txBytes);
txBlockMap.Set <Hash, Hash>(tx.Hash, block.Hash);
}
}
using (var m = new ProfileMarker("AddressBlockHashMapTag"))
foreach (var transaction in transactions)
{
var addresses = new HashSet <Address>();
var events = block.GetEventsForTransaction(transaction.Hash);
foreach (var evt in events)
{
if (evt.Address.IsSystem)
{
continue;
}
addresses.Add(evt.Address);
}
var addressTxMap = new StorageMap(AddressBlockHashMapTag, this.Storage);
foreach (var address in addresses)
{
var addressList = addressTxMap.Get <Address, StorageList>(address);
addressList.Add <Hash>(transaction.Hash);
}
}
using (var m = new ProfileMarker("Nexus.PluginTriggerBlock"))
Nexus.PluginTriggerBlock(this, block);
}
public StorageChangeSetContext ProcessTransactions(Block block, IEnumerable <Transaction> transactions
, OracleReader oracle, BigInteger minimumFee, bool allowModify = true)
{
if (allowModify)
{
block.CleanUp();
}
var changeSet = new StorageChangeSetContext(this.Storage);
transactions = ProcessPendingTasks(block, oracle, minimumFee, changeSet, allowModify).Concat(transactions);
int txIndex = 0;
foreach (var tx in transactions)
{
VMObject vmResult;
try
{
using (var m = new ProfileMarker("ExecuteTransaction"))
{
if (ExecuteTransaction(txIndex, tx, tx.Script, block.Validator, block.Timestamp, changeSet, block.Notify, oracle, ChainTask.Null, minimumFee, out vmResult, allowModify))
{
// merge transaction oracle data
oracle.MergeTxData();
if (vmResult != null)
{
if (allowModify)
{
var resultBytes = Serialization.Serialize(vmResult);
block.SetResultForHash(tx.Hash, resultBytes);
}
}
}
else
{
throw new InvalidTransactionException(tx.Hash, "script execution failed");
}
}
}
catch (Exception e)
{
e = e.ExpandInnerExceptions();
if (tx == null)
{
throw new BlockGenerationException(e.Message);
}
throw new InvalidTransactionException(tx.Hash, e.Message);
}
txIndex++;
}
if (this.IsRoot)
{
var inflationReady = NativeContract.LoadFieldFromStorage <bool>(changeSet, NativeContractKind.Gas, nameof(GasContract._inflationReady));
if (inflationReady)
{
var script = new ScriptBuilder()
.AllowGas(block.Validator, Address.Null, minimumFee, 999999)
.CallContract(NativeContractKind.Gas, nameof(GasContract.ApplyInflation), block.Validator)
.SpendGas(block.Validator)
.EndScript();
var transaction = new Transaction(this.Nexus.Name, this.Name, script, block.Timestamp.Value + 1, "SYSTEM");
VMObject vmResult;
if (!ExecuteTransaction(-1, transaction, transaction.Script, block.Validator, block.Timestamp, changeSet, block.Notify, oracle, ChainTask.Null, minimumFee, out vmResult, allowModify))
{
throw new ChainException("failed to execute inflation transaction");
}
transactions = transactions.Concat(new Transaction[] { transaction });
}
}
if (block.Protocol > DomainSettings.LatestKnownProtocol)
{
throw new BlockGenerationException($"unexpected protocol number {block.Protocol}, maybe software update required?");
}
// Only check protocol version if block is created on this node, no need to check if it's a non validator node.
if (allowModify)
{
var expectedProtocol = Nexus.GetGovernanceValue(Nexus.RootStorage, Nexus.NexusProtocolVersionTag);
if (block.Protocol != expectedProtocol)
{
throw new BlockGenerationException($"invalid protocol number {block.Protocol}, expected protocol {expectedProtocol}");
}
using (var m = new ProfileMarker("CloseBlock"))
{
CloseBlock(block, changeSet);
}
}
return(changeSet);
}
public DummyOracle(Nexus nexus) : base(nexus)
{
}
public void AddBlock(Block block, IEnumerable <Transaction> transactions, OracleReaderDelegate oracleReader)
{
/*if (CurrentEpoch != null && CurrentEpoch.IsSlashed(Timestamp.Now))
* {
* return false;
* }*/
if (LastBlock != null)
{
if (LastBlock.Height != block.Height - 1)
{
throw new BlockGenerationException($"height of block should be {LastBlock.Height + 1}");
}
if (block.PreviousHash != LastBlock.Hash)
{
throw new BlockGenerationException($"previous hash should be {LastBlock.PreviousHash}");
}
}
var inputHashes = new HashSet <Hash>(transactions.Select(x => x.Hash));
foreach (var hash in block.TransactionHashes)
{
if (!inputHashes.Contains(hash))
{
throw new BlockGenerationException($"missing in inputs transaction with hash {hash}");
}
}
var outputHashes = new HashSet <Hash>(block.TransactionHashes);
foreach (var tx in transactions)
{
if (!outputHashes.Contains(tx.Hash))
{
throw new BlockGenerationException($"missing in outputs transaction with hash {tx.Hash}");
}
}
foreach (var tx in transactions)
{
if (!tx.IsValid(this))
{
throw new InvalidTransactionException(tx.Hash, $"invalid transaction with hash {tx.Hash}");
}
}
var changeSet = new StorageChangeSetContext(this.Storage);
foreach (var tx in transactions)
{
byte[] result;
if (tx.Execute(this, block, changeSet, block.Notify, oracleReader, out result))
{
if (result != null)
{
block.SetResultForHash(tx.Hash, result);
}
}
else
{
throw new InvalidTransactionException(tx.Hash, $"transaction execution failed with hash {tx.Hash}");
}
}
// from here on, the block is accepted
_blockHeightMap[block.Height] = block;
_blocks[block.Hash] = block;
_blockChangeSets[block.Hash] = changeSet;
changeSet.Execute();
if (CurrentEpoch == null)
{
GenerateEpoch();
}
CurrentEpoch.AddBlockHash(block.Hash);
CurrentEpoch.UpdateHash();
LastBlock = block;
foreach (Transaction tx in transactions)
{
_transactions[tx.Hash] = tx;
_transactionBlockMap[tx.Hash] = block.Hash;
}
Nexus.PluginTriggerBlock(this, block);
}
public void CloseBlock(Block block, StorageChangeSetContext storage)
{
var rootStorage = this.IsRoot ? storage : Nexus.RootStorage;
if (block.Height > 1)
{
var prevBlock = GetBlockByHash(block.PreviousHash);
if (prevBlock.Validator != block.Validator)
{
block.Notify(new Event(EventKind.ValidatorSwitch, block.Validator, "block", Serialization.Serialize(prevBlock)));
}
}
var balance = new BalanceSheet(DomainSettings.FuelTokenSymbol);
var blockAddress = Address.FromHash("block");
var totalAvailable = balance.Get(storage, blockAddress);
var targets = new List <Address>();
if (Nexus.HasGenesis)
{
var validators = Nexus.GetValidators();
var totalValidators = Nexus.GetPrimaryValidatorCount();
for (int i = 0; i < totalValidators; i++)
{
var validator = validators[i];
if (validator.type != ValidatorType.Primary)
{
continue;
}
targets.Add(validator.address);
}
}
else
if (totalAvailable > 0)
{
targets.Add(Nexus.GetGenesisAddress(rootStorage));
}
if (targets.Count > 0)
{
if (!balance.Subtract(storage, blockAddress, totalAvailable))
{
throw new BlockGenerationException("could not subtract balance from block address");
}
var amountPerValidator = totalAvailable / targets.Count;
var leftOvers = totalAvailable - (amountPerValidator * targets.Count);
foreach (var address in targets)
{
BigInteger amount = amountPerValidator;
if (address == block.Validator)
{
amount += leftOvers;
}
// TODO this should use triggers when available...
if (!balance.Add(storage, address, amount))
{
throw new BlockGenerationException($"could not add balance to {address}");
}
var eventData = Serialization.Serialize(new TokenEventData(DomainSettings.FuelTokenSymbol, amount, this.Name));
block.Notify(new Event(EventKind.TokenClaim, address, "block", eventData));
}
}
}
public void AddBlock(Block block, IEnumerable <Transaction> transactions, BigInteger minimumFee)
{
/*if (CurrentEpoch != null && CurrentEpoch.IsSlashed(Timestamp.Now))
* {
* return false;
* }*/
var lastBlockHash = GetLastBlockHash();
var lastBlock = GetBlockByHash(lastBlockHash);
if (lastBlock != null)
{
if (lastBlock.Height != block.Height - 1)
{
throw new BlockGenerationException($"height of block should be {lastBlock.Height + 1}");
}
if (block.PreviousHash != lastBlock.Hash)
{
throw new BlockGenerationException($"previous hash should be {lastBlock.PreviousHash}");
}
}
var inputHashes = new HashSet <Hash>(transactions.Select(x => x.Hash));
foreach (var hash in block.TransactionHashes)
{
if (!inputHashes.Contains(hash))
{
throw new BlockGenerationException($"missing in inputs transaction with hash {hash}");
}
}
var outputHashes = new HashSet <Hash>(block.TransactionHashes);
foreach (var tx in transactions)
{
if (!outputHashes.Contains(tx.Hash))
{
throw new BlockGenerationException($"missing in outputs transaction with hash {tx.Hash}");
}
}
// TODO avoid fetching this every time
var expectedProtocol = Nexus.GetGovernanceValue(Nexus.RootStorage, Nexus.NexusProtocolVersionTag);
if (block.Protocol != expectedProtocol)
{
throw new BlockGenerationException($"invalid protocol number {block.Protocol}, expected protocol {expectedProtocol}");
}
foreach (var tx in transactions)
{
if (!tx.IsValid(this))
{
throw new InvalidTransactionException(tx.Hash, $"invalid transaction with hash {tx.Hash}");
}
}
var changeSet = new StorageChangeSetContext(this.Storage);
var oracle = Nexus.CreateOracleReader();
foreach (var tx in transactions)
{
byte[] result;
try
{
if (ExecuteTransaction(tx, block.Timestamp, changeSet, block.Notify, oracle, minimumFee, out result))
{
if (result != null)
{
block.SetResultForHash(tx.Hash, result);
}
}
else
{
throw new InvalidTransactionException(tx.Hash, $"execution failed");
}
}
catch (Exception e)
{
if (e.InnerException != null)
{
e = e.InnerException;
}
throw new InvalidTransactionException(tx.Hash, e.Message);
}
}
block.MergeOracle(oracle);
var hashList = new StorageList(BlockHeightListTag, this.Storage);
var expectedBlockHeight = hashList.Count() + 1;
if (expectedBlockHeight != block.Height)
{
throw new ChainException("unexpected block height");
}
// from here on, the block is accepted
changeSet.Execute();
hashList.Add <Hash>(block.Hash);
var blockMap = new StorageMap(BlockHashMapTag, this.Storage);
blockMap.Set <Hash, Block>(block.Hash, block);
var txMap = new StorageMap(TransactionHashMapTag, this.Storage);
var txBlockMap = new StorageMap(TxBlockHashMapTag, this.Storage);
foreach (Transaction tx in transactions)
{
txMap.Set <Hash, Transaction>(tx.Hash, tx);
txBlockMap.Set <Hash, Hash>(tx.Hash, block.Hash);
}
var blockValidator = GetValidatorForBlock(block);
if (blockValidator.IsNull)
{
throw new BlockGenerationException("no validator for this block");
}
Nexus.PluginTriggerBlock(this, block);
}
public StorageChangeSetContext ValidateBlock(Block block, IEnumerable <Transaction> transactions, BigInteger minimumFee)
{
if (!block.Validator.IsUser)
{
throw new BlockGenerationException($"block validator must be user address");
}
Block lastBlock;
using (var m = new ProfileMarker("GetLastBlock"))
{
var lastBlockHash = GetLastBlockHash();
lastBlock = GetBlockByHash(lastBlockHash);
}
if (lastBlock != null)
{
if (lastBlock.Height != block.Height - 1)
{
throw new BlockGenerationException($"height of block should be {lastBlock.Height + 1}");
}
if (block.PreviousHash != lastBlock.Hash)
{
throw new BlockGenerationException($"previous hash should be {lastBlock.PreviousHash}");
}
if (block.Timestamp < lastBlock.Timestamp)
{
throw new BlockGenerationException($"timestamp of block should be greater than {lastBlock.Timestamp}");
}
}
var inputHashes = new HashSet <Hash>(transactions.Select(x => x.Hash));
foreach (var hash in block.TransactionHashes)
{
if (!inputHashes.Contains(hash))
{
throw new BlockGenerationException($"missing in inputs transaction with hash {hash}");
}
}
var outputHashes = new HashSet <Hash>(block.TransactionHashes);
foreach (var tx in transactions)
{
if (!outputHashes.Contains(tx.Hash))
{
throw new BlockGenerationException($"missing in outputs transaction with hash {tx.Hash}");
}
}
// TODO avoid fetching this every time
var expectedProtocol = Nexus.GetGovernanceValue(Nexus.RootStorage, Nexus.NexusProtocolVersionTag);
if (block.Protocol != expectedProtocol)
{
throw new BlockGenerationException($"invalid protocol number {block.Protocol}, expected protocol {expectedProtocol}");
}
foreach (var tx in transactions)
{
if (!tx.IsValid(this))
{
throw new InvalidTransactionException(tx.Hash, $"invalid transaction with hash {tx.Hash}");
}
}
var changeSet = new StorageChangeSetContext(this.Storage);
var oracle = Nexus.CreateOracleReader();
block.CleanUp();
Address expectedValidator;
using (var m = new ProfileMarker("GetValidator"))
expectedValidator = Nexus.HasGenesis ? GetValidator(Nexus.RootStorage, block.Timestamp) : Nexus.GetGenesisAddress(Nexus.RootStorage);
if (block.Validator != expectedValidator)
{
throw new BlockGenerationException($"unexpected validator {block.Validator}, expected {expectedValidator}");
}
int txIndex = 0;
foreach (var tx in transactions)
{
byte[] result;
try
{
using (var m = new ProfileMarker("ExecuteTransaction"))
{
if (ExecuteTransaction(txIndex, tx, block.Timestamp, changeSet, block.Notify, oracle, minimumFee, out result))
{
if (result != null)
{
block.SetResultForHash(tx.Hash, result);
}
}
else
{
throw new InvalidTransactionException(tx.Hash, "script execution failed");
}
}
}
catch (Exception e)
{
if (e.InnerException != null)
{
e = e.InnerException;
}
if (tx == null)
{
throw new BlockGenerationException(e.Message);
}
throw new InvalidTransactionException(tx.Hash, e.Message);
}
txIndex++;
}
using (var m = new ProfileMarker("CloseBlock"))
{
CloseBlock(block, changeSet);
}
if (oracle.Entries.Any())
{
block.MergeOracle(oracle);
}
return(changeSet);
}
public StorageChangeSetContext ProcessBlock(Block block, IEnumerable <Transaction> transactions, BigInteger minimumFee, out Transaction inflationTx, PhantasmaKeys signingKeys)
{
if (!block.Validator.IsUser)
{
throw new BlockGenerationException($"block validator must be user address");
}
Block lastBlock;
using (var m = new ProfileMarker("GetLastBlock"))
{
var lastBlockHash = GetLastBlockHash();
lastBlock = GetBlockByHash(lastBlockHash);
}
if (lastBlock != null)
{
if (lastBlock.Height != block.Height - 1)
{
throw new BlockGenerationException($"height of block should be {lastBlock.Height + 1}");
}
if (block.PreviousHash != lastBlock.Hash)
{
throw new BlockGenerationException($"previous hash should be {lastBlock.PreviousHash}");
}
if (block.Timestamp < lastBlock.Timestamp)
{
throw new BlockGenerationException($"timestamp of block {block.Timestamp} should be greater than {lastBlock.Timestamp}");
}
}
var inputHashes = new HashSet <Hash>(transactions.Select(x => x.Hash).Distinct());
var txBlockMap = new StorageMap(TxBlockHashMapTag, this.Storage);
var diff = transactions.Count() - inputHashes.Count;
if (diff > 0)
{
var temp = new HashSet <Hash>();
foreach (var tx in transactions)
{
if (temp.Contains(tx.Hash))
{
throw new DuplicatedTransactionException(tx.Hash, $"transaction {tx.Hash} appears more than once in the block being minted");
}
else
if (txBlockMap.ContainsKey <Hash>(tx.Hash))
{
var previousBlockHash = txBlockMap.Get <Hash, Hash>(tx.Hash);
throw new DuplicatedTransactionException(tx.Hash, $"transaction {tx.Hash} already added to previous block {previousBlockHash}");
}
else
{
temp.Add(tx.Hash);
}
}
}
foreach (var hash in block.TransactionHashes)
{
if (!inputHashes.Contains(hash))
{
throw new BlockGenerationException($"missing in inputs transaction with hash {hash}");
}
}
var outputHashes = new HashSet <Hash>(block.TransactionHashes);
foreach (var tx in transactions)
{
if (!outputHashes.Contains(tx.Hash))
{
throw new BlockGenerationException($"missing in outputs transaction with hash {tx.Hash}");
}
}
foreach (var tx in transactions)
{
if (!tx.IsValid(this))
{
#if DEBUG
tx.IsValid(this);
#endif
throw new InvalidTransactionException(tx.Hash, $"invalid transaction with hash {tx.Hash}");
}
}
var oracle = Nexus.GetOracleReader();
block.CleanUp();
var changeSet = ProcessTransactions(block, transactions, oracle, minimumFee, out inflationTx, signingKeys);
Address expectedValidator;
using (var m = new ProfileMarker("GetValidator"))
expectedValidator = Nexus.HasGenesis ? GetValidator(Nexus.RootStorage, block.Timestamp) : Nexus.GetGenesisAddress(Nexus.RootStorage);
var migrationFound = false;
var migratedAddress = Address.Null;
foreach (var hash in outputHashes)
{
if (migrationFound)
{
break;
}
var events = block.GetEventsForTransaction(hash);
foreach (var evt in events)
{
if (evt.Kind == EventKind.AddressMigration && evt.Contract == "validator")
{
var oldAddress = evt.GetContent <Address>();
if (oldAddress == expectedValidator)
{
migratedAddress = evt.Address;
migrationFound = true;
break;
}
}
}
}
if (block.Validator != expectedValidator && !expectedValidator.IsNull)
{
if (migrationFound && migratedAddress == block.Validator)
{
expectedValidator = migratedAddress;
}
else
{
throw new BlockGenerationException($"unexpected validator {block.Validator}, expected {expectedValidator}");
}
}
if (oracle.Entries.Any())
{
block.MergeOracle(oracle);
oracle.Clear();
}
return(changeSet);
}
public bool Submit(Transaction tx)
{
if (this.CurrentState != State.Running)
{
return(false);
}
Throw.IfNull(tx, nameof(tx));
var chain = Nexus.FindChainByName(tx.ChainName);
Throw.IfNull(chain, nameof(chain));
if (tx.Signatures == null || tx.Signatures.Length < 1)
{
RejectTransaction(tx, "at least one signature required");
}
var currentTime = Timestamp.Now;
if (tx.Expiration <= currentTime)
{
RejectTransaction(tx, "already expired");
}
var diff = tx.Expiration - currentTime;
if (diff > MaxExpirationTimeDifferenceInSeconds)
{
RejectTransaction(tx, "expire date too big");
}
if (tx.NexusName != this.Nexus.Name)
{
RejectTransaction(tx, "invalid nexus name");
}
if (_hashMap.ContainsKey(tx.Hash))
{
throw new MempoolSubmissionException("already in mempool");
}
var entry = new MempoolEntry()
{
transaction = tx, timestamp = Timestamp.Now
};
List <MempoolEntry> list;
lock (_entries)
{
if (_entries.ContainsKey(chain.Name))
{
list = _entries[chain.Name];
}
else
{
list = new List <MempoolEntry>();
_entries[chain.Name] = list;
}
list.Add(entry);
_hashMap[tx.Hash] = chain.Name;
}
Interlocked.Increment(ref _size);
OnTransactionAdded?.Invoke(tx);
return(true);
}
public StorageChangeSetContext ProcessBlock(Block block, IEnumerable <Transaction> transactions, BigInteger minimumFee)
{
if (!block.Validator.IsUser)
{
throw new BlockGenerationException($"block validator must be user address");
}
Block lastBlock;
using (var m = new ProfileMarker("GetLastBlock"))
{
var lastBlockHash = GetLastBlockHash();
lastBlock = GetBlockByHash(lastBlockHash);
}
if (lastBlock != null)
{
if (lastBlock.Height != block.Height - 1)
{
throw new BlockGenerationException($"height of block should be {lastBlock.Height + 1}");
}
if (block.PreviousHash != lastBlock.Hash)
{
throw new BlockGenerationException($"previous hash should be {lastBlock.PreviousHash}");
}
if (block.Timestamp < lastBlock.Timestamp)
{
throw new BlockGenerationException($"timestamp of block {block.Timestamp} should be greater than {lastBlock.Timestamp}");
}
}
var inputHashes = new HashSet <Hash>(transactions.Select(x => x.Hash));
foreach (var hash in block.TransactionHashes)
{
if (!inputHashes.Contains(hash))
{
throw new BlockGenerationException($"missing in inputs transaction with hash {hash}");
}
}
var outputHashes = new HashSet <Hash>(block.TransactionHashes);
foreach (var tx in transactions)
{
if (!outputHashes.Contains(tx.Hash))
{
throw new BlockGenerationException($"missing in outputs transaction with hash {tx.Hash}");
}
}
foreach (var tx in transactions)
{
if (!tx.IsValid(this))
{
#if DEBUG
tx.IsValid(this);
#endif
throw new InvalidTransactionException(tx.Hash, $"invalid transaction with hash {tx.Hash}");
}
}
var oracle = Nexus.GetOracleReader();
block.CleanUp();
Address expectedValidator;
using (var m = new ProfileMarker("GetValidator"))
expectedValidator = Nexus.HasGenesis ? GetValidator(Nexus.RootStorage, block.Timestamp) : Nexus.GetGenesisAddress(Nexus.RootStorage);
if (block.Validator != expectedValidator && !expectedValidator.IsNull)
{
throw new BlockGenerationException($"unexpected validator {block.Validator}, expected {expectedValidator}");
}
var changeSet = ProcessTransactions(block, transactions, oracle, minimumFee);
if (oracle.Entries.Any())
{
block.MergeOracle(oracle);
oracle.Clear();
}
return(changeSet);
}
public override ExecutionState Execute(ExecutionFrame frame, Stack <VMObject> stack)
{
if (this.Contract.ABI == null)
{
throw new VMException(frame.VM, $"VM nativecall failed: ABI is missing for contract '{this.Contract.Name}'");
}
if (stack.Count <= 0)
{
throw new VMException(frame.VM, $"VM nativecall failed: method name not present in the VM stack {frame.Context.Name}");
}
var stackObj = stack.Pop();
var methodName = stackObj.AsString();
var runtime = (RuntimeVM)frame.VM;
if (methodName.Equals(SmartContract.ConstructorName, StringComparison.OrdinalIgnoreCase) && runtime.HasGenesis)
{
BigInteger usedQuota;
if (Nexus.IsNativeContract(Contract.Name))
{
usedQuota = 1024; // does not matter what number, just than its greater than 0
}
else
{
usedQuota = runtime.CallNativeContext(NativeContractKind.Storage, nameof(StorageContract.GetUsedDataQuota), this.Contract.Address).AsNumber();
}
if (usedQuota > 0)
{
throw new VMException(frame.VM, $"VM nativecall failed: constructor can only be called once");
}
}
var method = this.Contract.ABI.FindMethod(methodName);
if (method == null)
{
throw new VMException(frame.VM, $"VM nativecall failed: contract '{this.Contract.Name}' does not have method '{methodName}' in its ABI");
}
if (stack.Count < method.parameters.Length)
{
throw new VMException(frame.VM, $"VM nativecall failed: calling method {methodName} with {stack.Count} arguments instead of {method.parameters.Length}");
}
ExecutionState result;
BigInteger gasCost = 10;
result = runtime.ConsumeGas(gasCost);
if (result != ExecutionState.Running)
{
return(result);
}
var native = Contract as NativeContract;
if (native != null)
{
using (var m = new ProfileMarker("InternalCall"))
{
try
{
native.SetRuntime(runtime);
native.LoadFromStorage(runtime.Storage);
result = InternalCall(native, method, frame, stack);
native.SaveChangesToStorage();
}
catch (ArgumentException ex)
{
throw new VMException(frame.VM, $"VM nativecall failed: calling method {methodName} with arguments of wrong type, " + ex.ToString());
}
}
}
else
{
var custom = Contract as CustomContract;
if (custom != null)
{
if (method.offset < 0)
{
throw new VMException(frame.VM, $"VM context call failed: abi contains invalid offset for {method.name}");
}
#if SUSHI_MODE
var debugPath = @"C:\Code\Poltergeist\Builds\Windows\debug.asm";
var disasm = new VM.Disassembler(custom.Script);
var asm = string.Join("\n", disasm.Instructions.Select(x => x.ToString()));
System.IO.File.WriteAllText(debugPath, asm);
#endif
var context = new ScriptContext(Contract.Name, custom.Script, (uint)method.offset);
result = context.Execute(frame, stack);
}
else
{
throw new VMException(frame.VM, $"VM context call failed: unknown contract instance class {Contract.GetType().Name}");
}
}
// we terminate here execution, since it will be restarted in next context
if (result == ExecutionState.Running)
{
result = ExecutionState.Halt;
}
return(result);
}
public Chain(Nexus nexus, string name, IEnumerable <SmartContract> contracts, Logger log = null, Chain parentChain = null, Block parentBlock = null)
{
Throw.IfNull(nexus, "nexus required");
Throw.If(contracts == null || !contracts.Any(), "contracts required");
if (parentChain != null)
{
Throw.IfNull(parentBlock, "parent block required");
Throw.IfNot(nexus.ContainsChain(parentChain), "invalid chain");
//Throw.IfNot(parentChain.ContainsBlock(parentBlock), "invalid block"); // TODO should this be required?
}
var bytes = System.Text.Encoding.UTF8.GetBytes(name.ToLower());
var hash = CryptoExtensions.SHA256(bytes);
this.Address = new Address(hash);
// init stores
_transactions = new KeyValueStore <Transaction>(this.Address, "txs", KeyStoreDataSize.Medium, nexus.CacheSize);
_blocks = new KeyValueStore <Block>(this.Address, "blocks", KeyStoreDataSize.Medium, nexus.CacheSize);
_transactionBlockMap = new KeyValueStore <Hash>(this.Address, "txbk", KeyStoreDataSize.Small, nexus.CacheSize);
_epochMap = new KeyValueStore <Epoch>(this.Address, "epoch", KeyStoreDataSize.Medium, nexus.CacheSize);
foreach (var contract in contracts)
{
if (this._contracts.ContainsKey(contract.Name))
{
throw new ChainException("Duplicated contract name: " + contract.Name);
}
this._contracts[contract.Name] = contract;
this._contractContexts[contract.Name] = new NativeExecutionContext(contract);
}
this.Name = name;
this.Nexus = nexus;
this.ParentChain = parentChain;
this.ParentBlock = parentBlock;
if (nexus.CacheSize == -1)
{
this.Storage = new MemoryStorageContext();
}
else
{
this.Storage = new DiskStorageContext(this.Address, "data", KeyStoreDataSize.Medium);
}
this.Log = Logger.Init(log);
if (parentChain != null)
{
parentChain._childChains[name] = this;
_level = ParentChain.Level + 1;
}
else
{
_level = 1;
}
}