forked from cerc-io/plugeth
1f1ea18b54
This commit replaces the deep-copy based state revert mechanism with a linear complexity journal. This commit also hides several internal StateDB methods to limit the number of ways in which calling code can use the journal incorrectly. As usual consultation and bug fixes to the initial implementation were provided by @karalabe, @obscuren and @Arachnid. Thank you!
278 lines
7.7 KiB
Go
278 lines
7.7 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of go-ethereum.
|
|
//
|
|
// go-ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// go-ethereum is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// evm executes EVM code snippets.
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
"os"
|
|
"runtime"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/cmd/utils"
|
|
"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/glog"
|
|
"gopkg.in/urfave/cli.v1"
|
|
)
|
|
|
|
var gitCommit = "" // Git SHA1 commit hash of the release (set via linker flags)
|
|
|
|
var (
|
|
app = utils.NewApp(gitCommit, "the evm command line interface")
|
|
|
|
DebugFlag = cli.BoolFlag{
|
|
Name: "debug",
|
|
Usage: "output full trace logs",
|
|
}
|
|
ForceJitFlag = cli.BoolFlag{
|
|
Name: "forcejit",
|
|
Usage: "forces jit compilation",
|
|
}
|
|
DisableJitFlag = cli.BoolFlag{
|
|
Name: "nojit",
|
|
Usage: "disabled jit compilation",
|
|
}
|
|
CodeFlag = cli.StringFlag{
|
|
Name: "code",
|
|
Usage: "EVM code",
|
|
}
|
|
GasFlag = cli.StringFlag{
|
|
Name: "gas",
|
|
Usage: "gas limit for the evm",
|
|
Value: "10000000000",
|
|
}
|
|
PriceFlag = cli.StringFlag{
|
|
Name: "price",
|
|
Usage: "price set for the evm",
|
|
Value: "0",
|
|
}
|
|
ValueFlag = cli.StringFlag{
|
|
Name: "value",
|
|
Usage: "value set for the evm",
|
|
Value: "0",
|
|
}
|
|
DumpFlag = cli.BoolFlag{
|
|
Name: "dump",
|
|
Usage: "dumps the state after the run",
|
|
}
|
|
InputFlag = cli.StringFlag{
|
|
Name: "input",
|
|
Usage: "input for the EVM",
|
|
}
|
|
SysStatFlag = cli.BoolFlag{
|
|
Name: "sysstat",
|
|
Usage: "display system stats",
|
|
}
|
|
VerbosityFlag = cli.IntFlag{
|
|
Name: "verbosity",
|
|
Usage: "sets the verbosity level",
|
|
}
|
|
CreateFlag = cli.BoolFlag{
|
|
Name: "create",
|
|
Usage: "indicates the action should be create rather than call",
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
app.Flags = []cli.Flag{
|
|
CreateFlag,
|
|
DebugFlag,
|
|
VerbosityFlag,
|
|
ForceJitFlag,
|
|
DisableJitFlag,
|
|
SysStatFlag,
|
|
CodeFlag,
|
|
GasFlag,
|
|
PriceFlag,
|
|
ValueFlag,
|
|
DumpFlag,
|
|
InputFlag,
|
|
}
|
|
app.Action = run
|
|
}
|
|
|
|
func run(ctx *cli.Context) error {
|
|
glog.SetToStderr(true)
|
|
glog.SetV(ctx.GlobalInt(VerbosityFlag.Name))
|
|
|
|
db, _ := ethdb.NewMemDatabase()
|
|
statedb, _ := state.New(common.Hash{}, db)
|
|
sender := statedb.CreateAccount(common.StringToAddress("sender"))
|
|
|
|
logger := vm.NewStructLogger(nil)
|
|
|
|
vmenv := NewEnv(statedb, common.StringToAddress("evmuser"), common.Big(ctx.GlobalString(ValueFlag.Name)), vm.Config{
|
|
Debug: ctx.GlobalBool(DebugFlag.Name),
|
|
ForceJit: ctx.GlobalBool(ForceJitFlag.Name),
|
|
EnableJit: !ctx.GlobalBool(DisableJitFlag.Name),
|
|
Tracer: logger,
|
|
})
|
|
|
|
tstart := time.Now()
|
|
|
|
var (
|
|
ret []byte
|
|
err error
|
|
)
|
|
|
|
if ctx.GlobalBool(CreateFlag.Name) {
|
|
input := append(common.Hex2Bytes(ctx.GlobalString(CodeFlag.Name)), common.Hex2Bytes(ctx.GlobalString(InputFlag.Name))...)
|
|
ret, _, err = vmenv.Create(
|
|
sender,
|
|
input,
|
|
common.Big(ctx.GlobalString(GasFlag.Name)),
|
|
common.Big(ctx.GlobalString(PriceFlag.Name)),
|
|
common.Big(ctx.GlobalString(ValueFlag.Name)),
|
|
)
|
|
} else {
|
|
receiver := statedb.CreateAccount(common.StringToAddress("receiver"))
|
|
|
|
code := common.Hex2Bytes(ctx.GlobalString(CodeFlag.Name))
|
|
receiver.SetCode(crypto.Keccak256Hash(code), code)
|
|
ret, err = vmenv.Call(
|
|
sender,
|
|
receiver.Address(),
|
|
common.Hex2Bytes(ctx.GlobalString(InputFlag.Name)),
|
|
common.Big(ctx.GlobalString(GasFlag.Name)),
|
|
common.Big(ctx.GlobalString(PriceFlag.Name)),
|
|
common.Big(ctx.GlobalString(ValueFlag.Name)),
|
|
)
|
|
}
|
|
vmdone := time.Since(tstart)
|
|
|
|
if ctx.GlobalBool(DumpFlag.Name) {
|
|
statedb.Commit()
|
|
fmt.Println(string(statedb.Dump()))
|
|
}
|
|
vm.StdErrFormat(logger.StructLogs())
|
|
|
|
if ctx.GlobalBool(SysStatFlag.Name) {
|
|
var mem runtime.MemStats
|
|
runtime.ReadMemStats(&mem)
|
|
fmt.Printf("vm took %v\n", vmdone)
|
|
fmt.Printf(`alloc: %d
|
|
tot alloc: %d
|
|
no. malloc: %d
|
|
heap alloc: %d
|
|
heap objs: %d
|
|
num gc: %d
|
|
`, mem.Alloc, mem.TotalAlloc, mem.Mallocs, mem.HeapAlloc, mem.HeapObjects, mem.NumGC)
|
|
}
|
|
|
|
fmt.Printf("OUT: 0x%x", ret)
|
|
if err != nil {
|
|
fmt.Printf(" error: %v", err)
|
|
}
|
|
fmt.Println()
|
|
return nil
|
|
}
|
|
|
|
func main() {
|
|
if err := app.Run(os.Args); err != nil {
|
|
fmt.Fprintln(os.Stderr, err)
|
|
os.Exit(1)
|
|
}
|
|
}
|
|
|
|
type VMEnv struct {
|
|
state *state.StateDB
|
|
block *types.Block
|
|
|
|
transactor *common.Address
|
|
value *big.Int
|
|
|
|
depth int
|
|
Gas *big.Int
|
|
time *big.Int
|
|
logs []vm.StructLog
|
|
|
|
evm *vm.EVM
|
|
}
|
|
|
|
func NewEnv(state *state.StateDB, transactor common.Address, value *big.Int, cfg vm.Config) *VMEnv {
|
|
env := &VMEnv{
|
|
state: state,
|
|
transactor: &transactor,
|
|
value: value,
|
|
time: big.NewInt(time.Now().Unix()),
|
|
}
|
|
|
|
env.evm = vm.New(env, cfg)
|
|
return env
|
|
}
|
|
|
|
// ruleSet implements vm.RuleSet and will always default to the homestead rule set.
|
|
type ruleSet struct{}
|
|
|
|
func (ruleSet) IsHomestead(*big.Int) bool { return true }
|
|
|
|
func (self *VMEnv) RuleSet() vm.RuleSet { return ruleSet{} }
|
|
func (self *VMEnv) Vm() vm.Vm { return self.evm }
|
|
func (self *VMEnv) Db() vm.Database { return self.state }
|
|
func (self *VMEnv) SnapshotDatabase() int { return self.state.Snapshot() }
|
|
func (self *VMEnv) RevertToSnapshot(snap int) { self.state.RevertToSnapshot(snap) }
|
|
func (self *VMEnv) Origin() common.Address { return *self.transactor }
|
|
func (self *VMEnv) BlockNumber() *big.Int { return common.Big0 }
|
|
func (self *VMEnv) Coinbase() common.Address { return *self.transactor }
|
|
func (self *VMEnv) Time() *big.Int { return self.time }
|
|
func (self *VMEnv) Difficulty() *big.Int { return common.Big1 }
|
|
func (self *VMEnv) BlockHash() []byte { return make([]byte, 32) }
|
|
func (self *VMEnv) Value() *big.Int { return self.value }
|
|
func (self *VMEnv) GasLimit() *big.Int { return big.NewInt(1000000000) }
|
|
func (self *VMEnv) VmType() vm.Type { return vm.StdVmTy }
|
|
func (self *VMEnv) Depth() int { return 0 }
|
|
func (self *VMEnv) SetDepth(i int) { self.depth = i }
|
|
func (self *VMEnv) GetHash(n uint64) common.Hash {
|
|
if self.block.Number().Cmp(big.NewInt(int64(n))) == 0 {
|
|
return self.block.Hash()
|
|
}
|
|
return common.Hash{}
|
|
}
|
|
func (self *VMEnv) AddLog(log *vm.Log) {
|
|
self.state.AddLog(log)
|
|
}
|
|
func (self *VMEnv) CanTransfer(from common.Address, balance *big.Int) bool {
|
|
return self.state.GetBalance(from).Cmp(balance) >= 0
|
|
}
|
|
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) {
|
|
core.Transfer(from, to, amount)
|
|
}
|
|
|
|
func (self *VMEnv) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
|
|
self.Gas = gas
|
|
return core.Call(self, caller, addr, data, gas, price, value)
|
|
}
|
|
|
|
func (self *VMEnv) CallCode(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
|
|
return core.CallCode(self, caller, addr, data, gas, price, value)
|
|
}
|
|
|
|
func (self *VMEnv) DelegateCall(caller vm.ContractRef, addr common.Address, data []byte, gas, price *big.Int) ([]byte, error) {
|
|
return core.DelegateCall(self, caller, addr, data, gas, price)
|
|
}
|
|
|
|
func (self *VMEnv) Create(caller vm.ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
|
|
return core.Create(self, caller, data, gas, price, value)
|
|
}
|