package ethpipe import ( "fmt" "strings" "github.com/ethereum/eth-go/ethchain" "github.com/ethereum/eth-go/ethcrypto" "github.com/ethereum/eth-go/ethlog" "github.com/ethereum/eth-go/ethstate" "github.com/ethereum/eth-go/ethutil" "github.com/ethereum/eth-go/vm" ) var logger = ethlog.NewLogger("PIPE") type VmVars struct { State *ethstate.State } type Pipe struct { obj ethchain.EthManager stateManager *ethchain.StateManager blockChain *ethchain.BlockChain world *World Vm VmVars } func New(obj ethchain.EthManager) *Pipe { pipe := &Pipe{ obj: obj, stateManager: obj.StateManager(), blockChain: obj.BlockChain(), } pipe.world = NewWorld(pipe) return pipe } func (self *Pipe) Balance(addr []byte) *ethutil.Value { return ethutil.NewValue(self.World().safeGet(addr).Balance) } func (self *Pipe) Nonce(addr []byte) uint64 { return self.World().safeGet(addr).Nonce } func (self *Pipe) Execute(addr []byte, data []byte, value, gas, price *ethutil.Value) ([]byte, error) { return self.ExecuteObject(&Object{self.World().safeGet(addr)}, data, value, gas, price) } func (self *Pipe) ExecuteObject(object *Object, data []byte, value, gas, price *ethutil.Value) ([]byte, error) { var ( initiator = ethstate.NewStateObject(self.obj.KeyManager().KeyPair().Address()) block = self.blockChain.CurrentBlock ) self.Vm.State = self.World().State().Copy() evm := vm.New(NewEnv(self.Vm.State, block, value.BigInt(), initiator.Address()), vm.Type(ethutil.Config.VmType)) msg := vm.NewExecution(evm, object.Address(), data, gas.BigInt(), price.BigInt(), value.BigInt()) ret, err := msg.Exec(object.Address(), initiator) fmt.Println("returned from call", ret, err) return ret, err } func (self *Pipe) Block(hash []byte) *ethchain.Block { return self.blockChain.GetBlock(hash) } func (self *Pipe) Storage(addr, storageAddr []byte) *ethutil.Value { return self.World().safeGet(addr).GetStorage(ethutil.BigD(storageAddr)) } func (self *Pipe) ToAddress(priv []byte) []byte { pair, err := ethcrypto.NewKeyPairFromSec(priv) if err != nil { return nil } return pair.Address() } func (self *Pipe) Exists(addr []byte) bool { return self.World().Get(addr) != nil } func (self *Pipe) TransactString(key *ethcrypto.KeyPair, rec string, value, gas, price *ethutil.Value, data []byte) ([]byte, error) { // Check if an address is stored by this address var hash []byte addr := self.World().Config().Get("NameReg").StorageString(rec).Bytes() if len(addr) > 0 { hash = addr } else if ethutil.IsHex(rec) { hash = ethutil.Hex2Bytes(rec[2:]) } else { hash = ethutil.Hex2Bytes(rec) } return self.Transact(key, hash, value, gas, price, data) } func (self *Pipe) Transact(key *ethcrypto.KeyPair, rec []byte, value, gas, price *ethutil.Value, data []byte) ([]byte, error) { var hash []byte var contractCreation bool if rec == nil { contractCreation = true } var tx *ethchain.Transaction // Compile and assemble the given data if contractCreation { script, err := ethutil.Compile(string(data), false) if err != nil { return nil, err } tx = ethchain.NewContractCreationTx(value.BigInt(), gas.BigInt(), price.BigInt(), script) } else { data := ethutil.StringToByteFunc(string(data), func(s string) (ret []byte) { slice := strings.Split(s, "\n") for _, dataItem := range slice { d := ethutil.FormatData(dataItem) ret = append(ret, d...) } return }) tx = ethchain.NewTransactionMessage(hash, value.BigInt(), gas.BigInt(), price.BigInt(), data) } acc := self.stateManager.TransState().GetOrNewStateObject(key.Address()) tx.Nonce = acc.Nonce acc.Nonce += 1 self.stateManager.TransState().UpdateStateObject(acc) tx.Sign(key.PrivateKey) self.obj.TxPool().QueueTransaction(tx) if contractCreation { addr := tx.CreationAddress(self.World().State()) logger.Infof("Contract addr %x\n", addr) return addr, nil } return tx.Hash(), nil } func (self *Pipe) PushTx(tx *ethchain.Transaction) ([]byte, error) { self.obj.TxPool().QueueTransaction(tx) if tx.Recipient == nil { addr := tx.CreationAddress(self.World().State()) logger.Infof("Contract addr %x\n", addr) return addr, nil } return tx.Hash(), nil } func (self *Pipe) CompileMutan(code string) ([]byte, error) { data, err := ethutil.Compile(code, false) if err != nil { return nil, err } return data, nil }