2014-10-14 22:41:00 +00:00
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package helper
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import (
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"math/big"
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2014-12-04 09:53:49 +00:00
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"github.com/ethereum/go-ethereum/core"
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2014-12-01 23:03:53 +00:00
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"github.com/ethereum/go-ethereum/crypto"
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2014-10-23 13:01:27 +00:00
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"github.com/ethereum/go-ethereum/ethutil"
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2014-10-31 17:40:32 +00:00
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"github.com/ethereum/go-ethereum/state"
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2014-10-23 13:01:27 +00:00
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"github.com/ethereum/go-ethereum/vm"
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2014-10-14 22:41:00 +00:00
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)
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type Env struct {
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depth int
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state *state.StateDB
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skipTransfer bool
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Gas *big.Int
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origin []byte
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parent []byte
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coinbase []byte
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number *big.Int
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time int64
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difficulty *big.Int
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gasLimit *big.Int
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logs state.Logs
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}
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2014-12-04 10:40:20 +00:00
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func NewEnv(state *state.StateDB) *Env {
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return &Env{
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state: state,
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}
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}
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2014-12-04 10:40:20 +00:00
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func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
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env := NewEnv(state)
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env.origin = ethutil.Hex2Bytes(exeValues["caller"])
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env.parent = ethutil.Hex2Bytes(envValues["previousHash"])
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env.coinbase = ethutil.Hex2Bytes(envValues["currentCoinbase"])
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env.number = ethutil.Big(envValues["currentNumber"])
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env.time = ethutil.Big(envValues["currentTimestamp"]).Int64()
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env.difficulty = ethutil.Big(envValues["currentDifficulty"])
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env.gasLimit = ethutil.Big(envValues["currentGasLimit"])
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env.Gas = new(big.Int)
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return env
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}
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2014-10-31 17:40:32 +00:00
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func (self *Env) Origin() []byte { return self.origin }
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func (self *Env) BlockNumber() *big.Int { return self.number }
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func (self *Env) PrevHash() []byte { return self.parent }
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func (self *Env) Coinbase() []byte { return self.coinbase }
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func (self *Env) Time() int64 { return self.time }
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func (self *Env) Difficulty() *big.Int { return self.difficulty }
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func (self *Env) BlockHash() []byte { return nil }
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func (self *Env) State() *state.StateDB { return self.state }
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func (self *Env) GasLimit() *big.Int { return self.gasLimit }
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func (self *Env) AddLog(log state.Log) {
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self.logs = append(self.logs, log)
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}
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func (self *Env) Depth() int { return self.depth }
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func (self *Env) SetDepth(i int) { self.depth = i }
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func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error {
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return vm.Transfer(from, to, amount)
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}
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func (self *Env) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
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exec := core.NewExecution(self, addr, data, gas, price, value)
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exec.SkipTransfer = self.skipTransfer
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return exec
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}
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2015-01-02 15:14:12 +00:00
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func (self *Env) Call(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
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exe := self.vm(addr, data, gas, price, value)
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ret, err := exe.Call(addr, caller)
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self.Gas = exe.Gas
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return ret, err
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}
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func (self *Env) CallCode(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
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exe := self.vm(caller.Address(), data, gas, price, value)
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return exe.Call(addr, caller)
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}
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2015-01-02 15:14:12 +00:00
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func (self *Env) Create(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
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exe := self.vm(addr, data, gas, price, value)
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return exe.Create(caller)
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}
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2014-12-04 10:40:20 +00:00
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func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Logs, *big.Int, error) {
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var (
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to = FromHex(exec["address"])
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from = FromHex(exec["caller"])
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data = FromHex(exec["data"])
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gas = ethutil.Big(exec["gas"])
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price = ethutil.Big(exec["gasPrice"])
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value = ethutil.Big(exec["value"])
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)
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caller := state.GetOrNewStateObject(from)
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2014-10-14 22:41:00 +00:00
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2014-12-03 11:21:12 +00:00
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vmenv := NewEnvFromMap(state, env, exec)
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vmenv.skipTransfer = true
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ret, err := vmenv.Call(caller, to, data, gas, price, value)
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return ret, vmenv.logs, vmenv.Gas, err
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}
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2014-12-01 23:03:53 +00:00
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2014-12-18 20:58:26 +00:00
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func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
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var (
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keyPair, _ = crypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(tx["secretKey"])))
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to = FromHex(tx["to"])
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data = FromHex(tx["data"])
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gas = ethutil.Big(tx["gasLimit"])
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price = ethutil.Big(tx["gasPrice"])
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value = ethutil.Big(tx["value"])
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caddr = FromHex(env["currentCoinbase"])
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)
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coinbase := statedb.GetOrNewStateObject(caddr)
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coinbase.SetGasPool(ethutil.Big(env["currentGasLimit"]))
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2014-12-01 23:03:53 +00:00
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2014-12-18 20:58:26 +00:00
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message := NewMessage(keyPair.Address(), to, data, value, gas, price)
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Log.DebugDetailf("message{ to: %x, from %x, value: %v, gas: %v, price: %v }\n", message.to[:4], message.from[:4], message.value, message.gas, message.price)
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st := core.NewStateTransition(coinbase, message, statedb, nil)
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vmenv := NewEnvFromMap(statedb, env, tx)
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vmenv.origin = keyPair.Address()
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st.Env = vmenv
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ret, err := st.TransitionState()
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statedb.Update(vmenv.Gas)
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return ret, vmenv.logs, vmenv.Gas, err
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2014-12-01 23:03:53 +00:00
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}
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2014-12-18 20:58:26 +00:00
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type Message struct {
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from, to []byte
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value, gas, price *big.Int
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data []byte
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}
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func NewMessage(from, to, data []byte, value, gas, price *big.Int) Message {
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return Message{from, to, value, gas, price, data}
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}
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func (self Message) Hash() []byte { return nil }
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func (self Message) From() []byte { return self.from }
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func (self Message) To() []byte { return self.to }
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func (self Message) GasPrice() *big.Int { return self.price }
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func (self Message) Gas() *big.Int { return self.gas }
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func (self Message) Value() *big.Int { return self.value }
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func (self Message) Nonce() uint64 { return 0 }
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func (self Message) Data() []byte { return self.data }
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