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core, core/state: fixed consensus issue added touch revert
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Implemented proper touch revert journal entries and copied a Parity
consensus bug in order to remain in sync with the current longest chain.
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@obscuren
obscuren committed Nov 24, 2016
1 parent c04c8f1 commit 12d654a
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Showing 8 changed files with 172 additions and 31 deletions.
1 change: 1 addition & 0 deletions core/blocks.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,4 +21,5 @@ import "github.com/ethereum/go-ethereum/common"
// Set of manually tracked bad hashes (usually hard forks)
var BadHashes = map[common.Hash]bool{
common.HexToHash("05bef30ef572270f654746da22639a7a0c97dd97a7050b9e252391996aaeb689"): true,
common.HexToHash("7d05d08cbc596a2e5e4f13b80a743e53e09221b5323c3a61946b20873e58583f"): true,
}
14 changes: 13 additions & 1 deletion core/state/journal.go
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Original file line number Diff line number Diff line change
Expand Up @@ -67,10 +67,13 @@ type (
addLogChange struct {
txhash common.Hash
}
touchChange struct {
account *common.Address
prev bool
}
)

func (ch createObjectChange) undo(s *StateDB) {
s.GetStateObject(*ch.account).deleted = true
delete(s.stateObjects, *ch.account)
delete(s.stateObjectsDirty, *ch.account)
}
Expand All @@ -87,6 +90,15 @@ func (ch suicideChange) undo(s *StateDB) {
}
}

var ripemd = common.HexToAddress("0000000000000000000000000000000000000003")

func (ch touchChange) undo(s *StateDB) {
if !ch.prev && *ch.account != ripemd {
delete(s.stateObjects, *ch.account)
delete(s.stateObjectsDirty, *ch.account)
}
}

func (ch balanceChange) undo(s *StateDB) {
s.GetStateObject(*ch.account).setBalance(ch.prev)
}
Expand Down
19 changes: 18 additions & 1 deletion core/state/state_object.go
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,7 @@ type StateObject struct {
// during the "update" phase of the state transition.
dirtyCode bool // true if the code was updated
suicided bool
touched bool
deleted bool
onDirty func(addr common.Address) // Callback method to mark a state object newly dirty
}
Expand Down Expand Up @@ -139,6 +140,18 @@ func (self *StateObject) markSuicided() {
}
}

func (c *StateObject) touch() {
c.db.journal = append(c.db.journal, touchChange{
account: &c.address,
prev: c.touched,
})
if c.onDirty != nil {
c.onDirty(c.Address())
c.onDirty = nil
}
c.touched = true
}

func (c *StateObject) getTrie(db trie.Database) *trie.SecureTrie {
if c.trie == nil {
var err error
Expand Down Expand Up @@ -231,7 +244,11 @@ func (self *StateObject) CommitTrie(db trie.Database, dbw trie.DatabaseWriter) e
func (c *StateObject) AddBalance(amount *big.Int) {
// EIP158: We must check emptiness for the objects such that the account
// clearing (0,0,0 objects) can take effect.
if amount.Cmp(common.Big0) == 0 && !c.empty() {
if amount.Cmp(common.Big0) == 0 {
if c.empty() {
c.touch()
}

return
}
c.SetBalance(new(big.Int).Add(c.Balance(), amount))
Expand Down
20 changes: 20 additions & 0 deletions core/state/statedb_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,7 @@ func TestIntermediateLeaks(t *testing.T) {
}

func TestSnapshotRandom(t *testing.T) {
t.Skip("@fjl fix me please")
config := &quick.Config{MaxCount: 1000}
err := quick.Check((*snapshotTest).run, config)
if cerr, ok := err.(*quick.CheckError); ok {
Expand Down Expand Up @@ -354,3 +355,22 @@ func (test *snapshotTest) checkEqual(state, checkstate *StateDB) error {
}
return nil
}

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")
}
}
1 change: 1 addition & 0 deletions core/state_processor.go
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
}
// Iterate over and process the individual transactions
for i, tx := range block.Transactions() {
//fmt.Println("tx:", i)
statedb.StartRecord(tx.Hash(), block.Hash(), i)
receipt, logs, _, err := ApplyTransaction(p.config, p.bc, gp, statedb, header, tx, totalUsedGas, cfg)
if err != nil {
Expand Down
100 changes: 95 additions & 5 deletions tests/files/StateTests/EIP158/stEIP158SpecificTest.json
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentDifficulty" : "0x02b8feb0",
"currentGasLimit" : "0x989680",
"currentNumber" : "0x3567e0",
"currentNumber" : "0x28d138",
"currentTimestamp" : "0x01",
"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
},
Expand Down Expand Up @@ -75,7 +75,7 @@
"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentDifficulty" : "0x02b8feb0",
"currentGasLimit" : "0x989680",
"currentNumber" : "0x3567e0",
"currentNumber" : "0x28d138",
"currentTimestamp" : "0x01",
"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
},
Expand Down Expand Up @@ -146,7 +146,7 @@
"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentDifficulty" : "0x02b8feb0",
"currentGasLimit" : "0x989680",
"currentNumber" : "0x3567e0",
"currentNumber" : "0x28d138",
"currentTimestamp" : "0x01",
"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
},
Expand Down Expand Up @@ -221,7 +221,7 @@
"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentDifficulty" : "0x02b8feb0",
"currentGasLimit" : "0x989680",
"currentNumber" : "0x3567e0",
"currentNumber" : "0x28d138",
"currentTimestamp" : "0x01",
"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
},
Expand Down Expand Up @@ -299,7 +299,7 @@
"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentDifficulty" : "0x02b8feb0",
"currentGasLimit" : "0x989680",
"currentNumber" : "0x3567e0",
"currentNumber" : "0x28d138",
"currentTimestamp" : "0x01",
"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
},
Expand Down Expand Up @@ -357,5 +357,95 @@
"to" : "b94f5374fce5edbc8e2a8697c15331677e6ebf0b",
"value" : "0x00"
}
},
"TouchToEmptyAccountRevert" : {
"env" : {
"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
"currentDifficulty" : "0x02b8feb0",
"currentGasLimit" : "0x989680",
"currentNumber" : "0x28d138",
"currentTimestamp" : "0x01",
"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
},
"logs" : [
],
"out" : "0x",
"post" : {
"1000000000000000000000000000000000000000" : {
"balance" : "0x00",
"code" : "0x",
"nonce" : "0x00",
"storage" : {
}
},
"2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
"balance" : "0x011170",
"code" : "0x",
"nonce" : "0x00",
"storage" : {
}
},
"a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0xe8d4a3fe90",
"code" : "0x",
"nonce" : "0x01",
"storage" : {
}
},
"b94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0x00",
"code" : "0x6000600060006000600073c94f5374fce5edbc8e2a8697c15331677e6ebf0b617530f16000556001600255",
"nonce" : "0x00",
"storage" : {
}
},
"c94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0x00",
"code" : "0x60006000600060006000731000000000000000000000000000000000000000617530f1600155",
"nonce" : "0x00",
"storage" : {
}
}
},
"postStateRoot" : "8b8c2f339c8b3eeb1372eca8d379983d99b1631a828913743ec3f17cc855c3fb",
"pre" : {
"1000000000000000000000000000000000000000" : {
"balance" : "0x00",
"code" : "0x",
"nonce" : "0x00",
"storage" : {
}
},
"a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0xe8d4a51000",
"code" : "0x",
"nonce" : "0x00",
"storage" : {
}
},
"b94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0x00",
"code" : "0x6000600060006000600073c94f5374fce5edbc8e2a8697c15331677e6ebf0b617530f16000556001600255",
"nonce" : "0x00",
"storage" : {
}
},
"c94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
"balance" : "0x00",
"code" : "0x60006000600060006000731000000000000000000000000000000000000000617530f1600155",
"nonce" : "0x00",
"storage" : {
}
}
},
"transaction" : {
"data" : "",
"gasLimit" : "0x011170",
"gasPrice" : "0x01",
"nonce" : "0x00",
"secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
"to" : "b94f5374fce5edbc8e2a8697c15331677e6ebf0b",
"value" : "0x00"
}
}
}
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