2016-04-14 19:18:24 +03:00
|
|
|
// Copyright 2016 The go-ethereum Authors
|
2016-01-20 12:09:24 +02:00
|
|
|
// This file is part of the go-ethereum library.
|
|
|
|
//
|
|
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
|
|
// (at your option) any later version.
|
|
|
|
//
|
|
|
|
// The go-ethereum library 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 Lesser General Public License for more details.
|
|
|
|
//
|
|
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
package state
|
|
|
|
|
|
|
|
import (
|
2016-10-04 13:36:02 +03:00
|
|
|
"bytes"
|
|
|
|
"encoding/binary"
|
|
|
|
"fmt"
|
|
|
|
"math"
|
2016-01-20 12:09:24 +02:00
|
|
|
"math/big"
|
2016-10-04 13:36:02 +03:00
|
|
|
"math/rand"
|
|
|
|
"reflect"
|
|
|
|
"strings"
|
2016-01-20 12:09:24 +02:00
|
|
|
"testing"
|
2016-10-04 13:36:02 +03:00
|
|
|
"testing/quick"
|
2016-01-20 12:09:24 +02:00
|
|
|
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
2017-01-05 16:03:50 +03:00
|
|
|
"github.com/ethereum/go-ethereum/core/types"
|
2016-01-20 12:09:24 +02:00
|
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
|
|
)
|
|
|
|
|
|
|
|
// Tests that updating a state trie does not leak any database writes prior to
|
|
|
|
// actually committing the state.
|
|
|
|
func TestUpdateLeaks(t *testing.T) {
|
|
|
|
// Create an empty state database
|
|
|
|
db, _ := ethdb.NewMemDatabase()
|
|
|
|
state, _ := New(common.Hash{}, db)
|
|
|
|
|
|
|
|
// Update it with some accounts
|
|
|
|
for i := byte(0); i < 255; i++ {
|
2016-10-04 13:36:02 +03:00
|
|
|
addr := common.BytesToAddress([]byte{i})
|
|
|
|
state.AddBalance(addr, big.NewInt(int64(11*i)))
|
|
|
|
state.SetNonce(addr, uint64(42*i))
|
2016-01-20 12:09:24 +02:00
|
|
|
if i%2 == 0 {
|
2016-10-04 13:36:02 +03:00
|
|
|
state.SetState(addr, common.BytesToHash([]byte{i, i, i}), common.BytesToHash([]byte{i, i, i, i}))
|
2016-01-20 12:09:24 +02:00
|
|
|
}
|
|
|
|
if i%3 == 0 {
|
2016-10-04 13:36:02 +03:00
|
|
|
state.SetCode(addr, []byte{i, i, i, i, i})
|
2016-01-20 12:09:24 +02:00
|
|
|
}
|
2016-10-20 14:36:29 +03:00
|
|
|
state.IntermediateRoot(false)
|
2016-01-20 12:09:24 +02:00
|
|
|
}
|
|
|
|
// Ensure that no data was leaked into the database
|
|
|
|
for _, key := range db.Keys() {
|
|
|
|
value, _ := db.Get(key)
|
|
|
|
t.Errorf("State leaked into database: %x -> %x", key, value)
|
|
|
|
}
|
|
|
|
}
|
2016-01-20 16:06:28 +02:00
|
|
|
|
|
|
|
// Tests that no intermediate state of an object is stored into the database,
|
|
|
|
// only the one right before the commit.
|
|
|
|
func TestIntermediateLeaks(t *testing.T) {
|
|
|
|
// Create two state databases, one transitioning to the final state, the other final from the beginning
|
|
|
|
transDb, _ := ethdb.NewMemDatabase()
|
|
|
|
finalDb, _ := ethdb.NewMemDatabase()
|
|
|
|
transState, _ := New(common.Hash{}, transDb)
|
|
|
|
finalState, _ := New(common.Hash{}, finalDb)
|
|
|
|
|
2016-10-04 13:36:02 +03:00
|
|
|
modify := func(state *StateDB, addr common.Address, i, tweak byte) {
|
|
|
|
state.SetBalance(addr, big.NewInt(int64(11*i)+int64(tweak)))
|
|
|
|
state.SetNonce(addr, uint64(42*i+tweak))
|
2016-01-20 16:06:28 +02:00
|
|
|
if i%2 == 0 {
|
2016-10-04 13:36:02 +03:00
|
|
|
state.SetState(addr, common.Hash{i, i, i, 0}, common.Hash{})
|
|
|
|
state.SetState(addr, common.Hash{i, i, i, tweak}, common.Hash{i, i, i, i, tweak})
|
2016-01-20 16:06:28 +02:00
|
|
|
}
|
|
|
|
if i%3 == 0 {
|
2016-10-04 13:36:02 +03:00
|
|
|
state.SetCode(addr, []byte{i, i, i, i, i, tweak})
|
2016-01-20 16:06:28 +02:00
|
|
|
}
|
2016-10-04 13:36:02 +03:00
|
|
|
}
|
2016-01-20 16:06:28 +02:00
|
|
|
|
2016-10-04 13:36:02 +03:00
|
|
|
// Modify the transient state.
|
|
|
|
for i := byte(0); i < 255; i++ {
|
|
|
|
modify(transState, common.Address{byte(i)}, i, 0)
|
|
|
|
}
|
|
|
|
// Write modifications to trie.
|
2016-10-20 14:36:29 +03:00
|
|
|
transState.IntermediateRoot(false)
|
2016-01-20 16:06:28 +02:00
|
|
|
|
2016-10-04 13:36:02 +03:00
|
|
|
// Overwrite all the data with new values in the transient database.
|
|
|
|
for i := byte(0); i < 255; i++ {
|
|
|
|
modify(transState, common.Address{byte(i)}, i, 99)
|
|
|
|
modify(finalState, common.Address{byte(i)}, i, 99)
|
2016-01-20 16:06:28 +02:00
|
|
|
}
|
2016-10-04 13:36:02 +03:00
|
|
|
|
|
|
|
// Commit and cross check the databases.
|
2016-10-20 14:36:29 +03:00
|
|
|
if _, err := transState.Commit(false); err != nil {
|
2016-01-20 16:06:28 +02:00
|
|
|
t.Fatalf("failed to commit transition state: %v", err)
|
|
|
|
}
|
2016-10-20 14:36:29 +03:00
|
|
|
if _, err := finalState.Commit(false); err != nil {
|
2016-01-20 16:06:28 +02:00
|
|
|
t.Fatalf("failed to commit final state: %v", err)
|
|
|
|
}
|
|
|
|
for _, key := range finalDb.Keys() {
|
|
|
|
if _, err := transDb.Get(key); err != nil {
|
|
|
|
val, _ := finalDb.Get(key)
|
|
|
|
t.Errorf("entry missing from the transition database: %x -> %x", key, val)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for _, key := range transDb.Keys() {
|
|
|
|
if _, err := finalDb.Get(key); err != nil {
|
|
|
|
val, _ := transDb.Get(key)
|
|
|
|
t.Errorf("extra entry in the transition database: %x -> %x", key, val)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2016-10-04 13:36:02 +03:00
|
|
|
|
|
|
|
func TestSnapshotRandom(t *testing.T) {
|
2016-11-24 18:24:04 +03:00
|
|
|
t.Skip("@fjl fix me please")
|
2016-10-04 13:36:02 +03:00
|
|
|
config := &quick.Config{MaxCount: 1000}
|
|
|
|
err := quick.Check((*snapshotTest).run, config)
|
|
|
|
if cerr, ok := err.(*quick.CheckError); ok {
|
|
|
|
test := cerr.In[0].(*snapshotTest)
|
|
|
|
t.Errorf("%v:\n%s", test.err, test)
|
|
|
|
} else if err != nil {
|
|
|
|
t.Error(err)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// A snapshotTest checks that reverting StateDB snapshots properly undoes all changes
|
|
|
|
// captured by the snapshot. Instances of this test with pseudorandom content are created
|
|
|
|
// by Generate.
|
|
|
|
//
|
|
|
|
// The test works as follows:
|
|
|
|
//
|
|
|
|
// A new state is created and all actions are applied to it. Several snapshots are taken
|
|
|
|
// in between actions. The test then reverts each snapshot. For each snapshot the actions
|
|
|
|
// leading up to it are replayed on a fresh, empty state. The behaviour of all public
|
|
|
|
// accessor methods on the reverted state must match the return value of the equivalent
|
|
|
|
// methods on the replayed state.
|
|
|
|
type snapshotTest struct {
|
|
|
|
addrs []common.Address // all account addresses
|
|
|
|
actions []testAction // modifications to the state
|
|
|
|
snapshots []int // actions indexes at which snapshot is taken
|
|
|
|
err error // failure details are reported through this field
|
|
|
|
}
|
|
|
|
|
|
|
|
type testAction struct {
|
|
|
|
name string
|
|
|
|
fn func(testAction, *StateDB)
|
|
|
|
args []int64
|
|
|
|
noAddr bool
|
|
|
|
}
|
|
|
|
|
|
|
|
// newTestAction creates a random action that changes state.
|
|
|
|
func newTestAction(addr common.Address, r *rand.Rand) testAction {
|
|
|
|
actions := []testAction{
|
|
|
|
{
|
|
|
|
name: "SetBalance",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
s.SetBalance(addr, big.NewInt(a.args[0]))
|
|
|
|
},
|
|
|
|
args: make([]int64, 1),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "AddBalance",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
s.AddBalance(addr, big.NewInt(a.args[0]))
|
|
|
|
},
|
|
|
|
args: make([]int64, 1),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "SetNonce",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
s.SetNonce(addr, uint64(a.args[0]))
|
|
|
|
},
|
|
|
|
args: make([]int64, 1),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "SetState",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
var key, val common.Hash
|
|
|
|
binary.BigEndian.PutUint16(key[:], uint16(a.args[0]))
|
|
|
|
binary.BigEndian.PutUint16(val[:], uint16(a.args[1]))
|
|
|
|
s.SetState(addr, key, val)
|
|
|
|
},
|
|
|
|
args: make([]int64, 2),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "SetCode",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
code := make([]byte, 16)
|
|
|
|
binary.BigEndian.PutUint64(code, uint64(a.args[0]))
|
|
|
|
binary.BigEndian.PutUint64(code[8:], uint64(a.args[1]))
|
|
|
|
s.SetCode(addr, code)
|
|
|
|
},
|
|
|
|
args: make([]int64, 2),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "CreateAccount",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
s.CreateAccount(addr)
|
|
|
|
},
|
|
|
|
},
|
|
|
|
{
|
2016-10-05 23:22:31 +03:00
|
|
|
name: "Suicide",
|
2016-10-04 13:36:02 +03:00
|
|
|
fn: func(a testAction, s *StateDB) {
|
2016-10-05 23:22:31 +03:00
|
|
|
s.Suicide(addr)
|
2016-10-04 13:36:02 +03:00
|
|
|
},
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "AddRefund",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
s.AddRefund(big.NewInt(a.args[0]))
|
|
|
|
},
|
|
|
|
args: make([]int64, 1),
|
|
|
|
noAddr: true,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
name: "AddLog",
|
|
|
|
fn: func(a testAction, s *StateDB) {
|
|
|
|
data := make([]byte, 2)
|
|
|
|
binary.BigEndian.PutUint16(data, uint16(a.args[0]))
|
2017-01-05 16:03:50 +03:00
|
|
|
s.AddLog(&types.Log{Address: addr, Data: data})
|
2016-10-04 13:36:02 +03:00
|
|
|
},
|
|
|
|
args: make([]int64, 1),
|
|
|
|
},
|
|
|
|
}
|
|
|
|
action := actions[r.Intn(len(actions))]
|
|
|
|
var nameargs []string
|
|
|
|
if !action.noAddr {
|
|
|
|
nameargs = append(nameargs, addr.Hex())
|
|
|
|
}
|
|
|
|
for _, i := range action.args {
|
|
|
|
action.args[i] = rand.Int63n(100)
|
|
|
|
nameargs = append(nameargs, fmt.Sprint(action.args[i]))
|
|
|
|
}
|
|
|
|
action.name += strings.Join(nameargs, ", ")
|
|
|
|
return action
|
|
|
|
}
|
|
|
|
|
|
|
|
// Generate returns a new snapshot test of the given size. All randomness is
|
|
|
|
// derived from r.
|
|
|
|
func (*snapshotTest) Generate(r *rand.Rand, size int) reflect.Value {
|
|
|
|
// Generate random actions.
|
|
|
|
addrs := make([]common.Address, 50)
|
|
|
|
for i := range addrs {
|
|
|
|
addrs[i][0] = byte(i)
|
|
|
|
}
|
|
|
|
actions := make([]testAction, size)
|
|
|
|
for i := range actions {
|
|
|
|
addr := addrs[r.Intn(len(addrs))]
|
|
|
|
actions[i] = newTestAction(addr, r)
|
|
|
|
}
|
|
|
|
// Generate snapshot indexes.
|
|
|
|
nsnapshots := int(math.Sqrt(float64(size)))
|
|
|
|
if size > 0 && nsnapshots == 0 {
|
|
|
|
nsnapshots = 1
|
|
|
|
}
|
|
|
|
snapshots := make([]int, nsnapshots)
|
|
|
|
snaplen := len(actions) / nsnapshots
|
|
|
|
for i := range snapshots {
|
|
|
|
// Try to place the snapshots some number of actions apart from each other.
|
|
|
|
snapshots[i] = (i * snaplen) + r.Intn(snaplen)
|
|
|
|
}
|
|
|
|
return reflect.ValueOf(&snapshotTest{addrs, actions, snapshots, nil})
|
|
|
|
}
|
|
|
|
|
|
|
|
func (test *snapshotTest) String() string {
|
|
|
|
out := new(bytes.Buffer)
|
|
|
|
sindex := 0
|
|
|
|
for i, action := range test.actions {
|
|
|
|
if len(test.snapshots) > sindex && i == test.snapshots[sindex] {
|
|
|
|
fmt.Fprintf(out, "---- snapshot %d ----\n", sindex)
|
|
|
|
sindex++
|
|
|
|
}
|
|
|
|
fmt.Fprintf(out, "%4d: %s\n", i, action.name)
|
|
|
|
}
|
|
|
|
return out.String()
|
|
|
|
}
|
|
|
|
|
|
|
|
func (test *snapshotTest) run() bool {
|
|
|
|
// Run all actions and create snapshots.
|
|
|
|
var (
|
|
|
|
db, _ = ethdb.NewMemDatabase()
|
|
|
|
state, _ = New(common.Hash{}, db)
|
|
|
|
snapshotRevs = make([]int, len(test.snapshots))
|
|
|
|
sindex = 0
|
|
|
|
)
|
|
|
|
for i, action := range test.actions {
|
|
|
|
if len(test.snapshots) > sindex && i == test.snapshots[sindex] {
|
|
|
|
snapshotRevs[sindex] = state.Snapshot()
|
|
|
|
sindex++
|
|
|
|
}
|
|
|
|
action.fn(action, state)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Revert all snapshots in reverse order. Each revert must yield a state
|
|
|
|
// that is equivalent to fresh state with all actions up the snapshot applied.
|
|
|
|
for sindex--; sindex >= 0; sindex-- {
|
|
|
|
checkstate, _ := New(common.Hash{}, db)
|
|
|
|
for _, action := range test.actions[:test.snapshots[sindex]] {
|
|
|
|
action.fn(action, checkstate)
|
|
|
|
}
|
|
|
|
state.RevertToSnapshot(snapshotRevs[sindex])
|
|
|
|
if err := test.checkEqual(state, checkstate); err != nil {
|
|
|
|
test.err = fmt.Errorf("state mismatch after revert to snapshot %d\n%v", sindex, err)
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
|
|
|
|
// checkEqual checks that methods of state and checkstate return the same values.
|
|
|
|
func (test *snapshotTest) checkEqual(state, checkstate *StateDB) error {
|
|
|
|
for _, addr := range test.addrs {
|
|
|
|
var err error
|
|
|
|
checkeq := func(op string, a, b interface{}) bool {
|
|
|
|
if err == nil && !reflect.DeepEqual(a, b) {
|
|
|
|
err = fmt.Errorf("got %s(%s) == %v, want %v", op, addr.Hex(), a, b)
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
// Check basic accessor methods.
|
|
|
|
checkeq("Exist", state.Exist(addr), checkstate.Exist(addr))
|
2016-10-05 23:22:31 +03:00
|
|
|
checkeq("HasSuicided", state.HasSuicided(addr), checkstate.HasSuicided(addr))
|
2016-10-04 13:36:02 +03:00
|
|
|
checkeq("GetBalance", state.GetBalance(addr), checkstate.GetBalance(addr))
|
|
|
|
checkeq("GetNonce", state.GetNonce(addr), checkstate.GetNonce(addr))
|
|
|
|
checkeq("GetCode", state.GetCode(addr), checkstate.GetCode(addr))
|
|
|
|
checkeq("GetCodeHash", state.GetCodeHash(addr), checkstate.GetCodeHash(addr))
|
|
|
|
checkeq("GetCodeSize", state.GetCodeSize(addr), checkstate.GetCodeSize(addr))
|
|
|
|
// Check storage.
|
2017-02-23 01:29:59 +03:00
|
|
|
if obj := state.getStateObject(addr); obj != nil {
|
|
|
|
state.ForEachStorage(addr, func(key, val common.Hash) bool {
|
2016-10-04 13:36:02 +03:00
|
|
|
return checkeq("GetState("+key.Hex()+")", val, checkstate.GetState(addr, key))
|
|
|
|
})
|
2017-02-23 01:29:59 +03:00
|
|
|
checkstate.ForEachStorage(addr, func(key, checkval common.Hash) bool {
|
2016-10-04 13:36:02 +03:00
|
|
|
return checkeq("GetState("+key.Hex()+")", state.GetState(addr, key), checkval)
|
|
|
|
})
|
|
|
|
}
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if state.GetRefund().Cmp(checkstate.GetRefund()) != 0 {
|
|
|
|
return fmt.Errorf("got GetRefund() == %d, want GetRefund() == %d",
|
|
|
|
state.GetRefund(), checkstate.GetRefund())
|
|
|
|
}
|
|
|
|
if !reflect.DeepEqual(state.GetLogs(common.Hash{}), checkstate.GetLogs(common.Hash{})) {
|
|
|
|
return fmt.Errorf("got GetLogs(common.Hash{}) == %v, want GetLogs(common.Hash{}) == %v",
|
|
|
|
state.GetLogs(common.Hash{}), checkstate.GetLogs(common.Hash{}))
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
2016-11-24 18:24:04 +03:00
|
|
|
|
|
|
|
func TestTouchDelete(t *testing.T) {
|
|
|
|
db, _ := ethdb.NewMemDatabase()
|
|
|
|
state, _ := New(common.Hash{}, db)
|
|
|
|
state.GetOrNewStateObject(common.Address{})
|
|
|
|
root, _ := state.Commit(false)
|
|
|
|
state.Reset(root)
|
|
|
|
|
|
|
|
snapshot := state.Snapshot()
|
|
|
|
state.AddBalance(common.Address{}, new(big.Int))
|
|
|
|
if len(state.stateObjectsDirty) != 1 {
|
|
|
|
t.Fatal("expected one dirty state object")
|
|
|
|
}
|
|
|
|
|
|
|
|
state.RevertToSnapshot(snapshot)
|
|
|
|
if len(state.stateObjectsDirty) != 0 {
|
|
|
|
t.Fatal("expected no dirty state object")
|
|
|
|
}
|
|
|
|
}
|