131 lines
4.0 KiB
Go
131 lines
4.0 KiB
Go
package helper
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethutil"
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"github.com/ethereum/go-ethereum/state"
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"github.com/ethereum/go-ethereum/vm"
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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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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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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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return env
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}
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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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evm := vm.New(self, vm.DebugVmTy)
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exec := core.NewExecution(evm, 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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func (self *Env) Call(caller vm.ClosureRef, 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.ClosureRef, 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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func (self *Env) Create(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
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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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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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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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func RunState(state *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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)
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caller := state.GetOrNewStateObject(keyPair.Address())
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vmenv := NewEnvFromMap(state, env, tx)
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vmenv.origin = caller.Address()
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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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