package tests import ( "bytes" "errors" "fmt" "math/big" "strconv" // "testing" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" // "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" // "github.com/ethereum/go-ethereum/logger" ) type Account struct { Balance string Code string Nonce string Storage map[string]string } type Log struct { AddressF string `json:"address"` DataF string `json:"data"` TopicsF []string `json:"topics"` BloomF string `json:"bloom"` } func (self Log) Address() []byte { return common.Hex2Bytes(self.AddressF) } func (self Log) Data() []byte { return common.Hex2Bytes(self.DataF) } func (self Log) RlpData() interface{} { return nil } func (self Log) Topics() [][]byte { t := make([][]byte, len(self.TopicsF)) for i, topic := range self.TopicsF { t[i] = common.Hex2Bytes(topic) } return t } func StateObjectFromAccount(db common.Database, addr string, account Account) *state.StateObject { obj := state.NewStateObject(common.HexToAddress(addr), db) obj.SetBalance(common.Big(account.Balance)) if common.IsHex(account.Code) { account.Code = account.Code[2:] } obj.SetCode(common.Hex2Bytes(account.Code)) obj.SetNonce(common.Big(account.Nonce).Uint64()) return obj } type VmEnv struct { CurrentCoinbase string CurrentDifficulty string CurrentGasLimit string CurrentNumber string CurrentTimestamp interface{} PreviousHash string } type VmTest struct { Callcreates interface{} //Env map[string]string Env VmEnv Exec map[string]string Transaction map[string]string Logs []Log Gas string Out string Post map[string]Account Pre map[string]Account PostStateRoot string } func RunVmTest(p string) error { tests := make(map[string]VmTest) err := CreateFileTests(p, &tests) if err != nil { return err } for name, test := range tests { /* vm.Debug = true glog.SetV(4) glog.SetToStderr(true) if name != "Call50000_sha256" { continue } */ db, _ := ethdb.NewMemDatabase() statedb := state.New(common.Hash{}, db) for addr, account := range test.Pre { obj := StateObjectFromAccount(db, addr, account) statedb.SetStateObject(obj) for a, v := range account.Storage { obj.SetState(common.HexToHash(a), common.HexToHash(v)) } } // XXX Yeah, yeah... env := make(map[string]string) env["currentCoinbase"] = test.Env.CurrentCoinbase env["currentDifficulty"] = test.Env.CurrentDifficulty env["currentGasLimit"] = test.Env.CurrentGasLimit env["currentNumber"] = test.Env.CurrentNumber env["previousHash"] = test.Env.PreviousHash if n, ok := test.Env.CurrentTimestamp.(float64); ok { env["currentTimestamp"] = strconv.Itoa(int(n)) } else { env["currentTimestamp"] = test.Env.CurrentTimestamp.(string) } var ( ret []byte gas *big.Int err error logs state.Logs ) ret, logs, gas, err = RunVm(statedb, env, test.Exec) // Compare expectedand actual return rexp := common.FromHex(test.Out) if bytes.Compare(rexp, ret) != 0 { return fmt.Errorf("%s's return failed. Expected %x, got %x\n", name, rexp, ret) } // Check gas usage if len(test.Gas) == 0 && err == nil { return fmt.Errorf("%s's gas unspecified, indicating an error. VM returned (incorrectly) successfull", name) } else { gexp := common.Big(test.Gas) if gexp.Cmp(gas) != 0 { return fmt.Errorf("%s's gas failed. Expected %v, got %v\n", name, gexp, gas) } } // check post state for addr, account := range test.Post { obj := statedb.GetStateObject(common.HexToAddress(addr)) if obj == nil { continue } for addr, value := range account.Storage { v := obj.GetState(common.HexToHash(addr)) vexp := common.HexToHash(value) if v != vexp { return t.Errorf("%s's : (%x: %s) storage failed. Expected %x, got %x (%v %v)\n", name, obj.Address().Bytes()[0:4], addr, vexp, v, vexp.Big(), v.Big()) } } } // check logs if len(test.Logs) > 0 { CheckLogs(test.Logs, logs, t) } fmt.Println("VM test passed: ", name) //fmt.Println(string(statedb.Dump())) } // logger.Flush() return nil } type Env struct { depth int state *state.StateDB skipTransfer bool initial bool Gas *big.Int origin common.Address //parent common.Hash coinbase common.Address number *big.Int time int64 difficulty *big.Int gasLimit *big.Int logs state.Logs vmTest bool } func NewEnv(state *state.StateDB) *Env { return &Env{ state: state, } } func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env { env := NewEnv(state) env.origin = common.HexToAddress(exeValues["caller"]) //env.parent = common.Hex2Bytes(envValues["previousHash"]) env.coinbase = common.HexToAddress(envValues["currentCoinbase"]) env.number = common.Big(envValues["currentNumber"]) env.time = common.Big(envValues["currentTimestamp"]).Int64() env.difficulty = common.Big(envValues["currentDifficulty"]) env.gasLimit = common.Big(envValues["currentGasLimit"]) env.Gas = new(big.Int) return env } func (self *Env) Origin() common.Address { return self.origin } func (self *Env) BlockNumber() *big.Int { return self.number } //func (self *Env) PrevHash() []byte { return self.parent } func (self *Env) Coinbase() common.Address { return self.coinbase } func (self *Env) Time() int64 { return self.time } func (self *Env) Difficulty() *big.Int { return self.difficulty } func (self *Env) State() *state.StateDB { return self.state } func (self *Env) GasLimit() *big.Int { return self.gasLimit } func (self *Env) VmType() vm.Type { return vm.StdVmTy } func (self *Env) GetHash(n uint64) common.Hash { return common.BytesToHash(crypto.Sha3([]byte(big.NewInt(int64(n)).String()))) } func (self *Env) AddLog(log *state.Log) { self.state.AddLog(log) } func (self *Env) Depth() int { return self.depth } func (self *Env) SetDepth(i int) { self.depth = i } func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error { if self.skipTransfer { // ugly hack if self.initial { self.initial = false return nil } if from.Balance().Cmp(amount) < 0 { return errors.New("Insufficient balance in account") } return nil } return vm.Transfer(from, to, amount) } func (self *Env) vm(addr *common.Address, data []byte, gas, price, value *big.Int) *core.Execution { exec := core.NewExecution(self, addr, data, gas, price, value) return exec } func (self *Env) Call(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) { if self.vmTest && self.depth > 0 { caller.ReturnGas(gas, price) return nil, nil } exe := self.vm(&addr, data, gas, price, value) ret, err := exe.Call(addr, caller) self.Gas = exe.Gas return ret, err } func (self *Env) CallCode(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) { if self.vmTest && self.depth > 0 { caller.ReturnGas(gas, price) return nil, nil } caddr := caller.Address() exe := self.vm(&caddr, data, gas, price, value) return exe.Call(addr, caller) } func (self *Env) Create(caller vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) { exe := self.vm(nil, data, gas, price, value) if self.vmTest { caller.ReturnGas(gas, price) nonce := self.state.GetNonce(caller.Address()) obj := self.state.GetOrNewStateObject(crypto.CreateAddress(caller.Address(), nonce)) return nil, nil, obj } else { return exe.Create(caller) } } func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Logs, *big.Int, error) { var ( to = common.HexToAddress(exec["address"]) from = common.HexToAddress(exec["caller"]) data = common.FromHex(exec["data"]) gas = common.Big(exec["gas"]) price = common.Big(exec["gasPrice"]) value = common.Big(exec["value"]) ) // Reset the pre-compiled contracts for VM tests. vm.Precompiled = make(map[string]*vm.PrecompiledAccount) caller := state.GetOrNewStateObject(from) vmenv := NewEnvFromMap(state, env, exec) vmenv.vmTest = true vmenv.skipTransfer = true vmenv.initial = true ret, err := vmenv.Call(caller, to, data, gas, price, value) return ret, vmenv.state.Logs(), vmenv.Gas, err } type Message struct { from common.Address to *common.Address value, gas, price *big.Int data []byte nonce uint64 } func NewMessage(from common.Address, to *common.Address, data []byte, value, gas, price *big.Int, nonce uint64) Message { return Message{from, to, value, gas, price, data, nonce} } func (self Message) Hash() []byte { return nil } func (self Message) From() (common.Address, error) { return self.from, nil } func (self Message) To() *common.Address { return self.to } func (self Message) GasPrice() *big.Int { return self.price } func (self Message) Gas() *big.Int { return self.gas } func (self Message) Value() *big.Int { return self.value } func (self Message) Nonce() uint64 { return self.nonce } func (self Message) Data() []byte { return self.data }