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authorNick Johnson <arachnid@notdot.net>2017-01-17 19:19:50 +0800
committerFelix Lange <fjl@users.noreply.github.com>2017-01-17 19:19:50 +0800
commit17d92233d9e64b642fed9a992556f7ff7d6fda18 (patch)
treee655a85d9d31c3377aef21b441c8b2c44df0aeff /core
parent26d385c18b5eb003d9a69ff618c78acbe594db44 (diff)
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cmd/geth, core: add support for recording SHA3 preimages (#3543)
Diffstat (limited to 'core')
-rw-r--r--core/bench_test.go5
-rw-r--r--core/block_validator_test.go3
-rw-r--r--core/blockchain.go10
-rw-r--r--core/blockchain_test.go26
-rw-r--r--core/chain_makers.go2
-rw-r--r--core/chain_makers_test.go3
-rw-r--r--core/dao_test.go13
-rw-r--r--core/database_util.go45
-rw-r--r--core/state/journal.go7
-rw-r--r--core/state/statedb.go26
-rw-r--r--core/state_processor.go2
-rw-r--r--core/vm/instructions.go7
-rw-r--r--core/vm/interface.go1
-rw-r--r--core/vm/noop.go1
-rw-r--r--core/vm/vm.go2
15 files changed, 118 insertions, 35 deletions
diff --git a/core/bench_test.go b/core/bench_test.go
index 5785748a1..353d217fd 100644
--- a/core/bench_test.go
+++ b/core/bench_test.go
@@ -25,6 +25,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"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/event"
@@ -168,7 +169,7 @@ func benchInsertChain(b *testing.B, disk bool, gen func(int, *BlockGen)) {
// Time the insertion of the new chain.
// State and blocks are stored in the same DB.
evmux := new(event.TypeMux)
- chainman, _ := NewBlockChain(db, &params.ChainConfig{HomesteadBlock: new(big.Int)}, FakePow{}, evmux)
+ chainman, _ := NewBlockChain(db, &params.ChainConfig{HomesteadBlock: new(big.Int)}, FakePow{}, evmux, vm.Config{})
defer chainman.Stop()
b.ReportAllocs()
b.ResetTimer()
@@ -278,7 +279,7 @@ func benchReadChain(b *testing.B, full bool, count uint64) {
if err != nil {
b.Fatalf("error opening database at %v: %v", dir, err)
}
- chain, err := NewBlockChain(db, testChainConfig(), FakePow{}, new(event.TypeMux))
+ chain, err := NewBlockChain(db, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
if err != nil {
b.Fatalf("error creating chain: %v", err)
}
diff --git a/core/block_validator_test.go b/core/block_validator_test.go
index 413c3cc8e..01931efd2 100644
--- a/core/block_validator_test.go
+++ b/core/block_validator_test.go
@@ -24,6 +24,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"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/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/params"
@@ -39,7 +40,7 @@ func proc() (Validator, *BlockChain) {
var mux event.TypeMux
WriteTestNetGenesisBlock(db)
- blockchain, err := NewBlockChain(db, testChainConfig(), thePow(), &mux)
+ blockchain, err := NewBlockChain(db, testChainConfig(), thePow(), &mux, vm.Config{})
if err != nil {
fmt.Println(err)
}
diff --git a/core/blockchain.go b/core/blockchain.go
index 6462c17fa..2e522d97c 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -107,12 +107,13 @@ type BlockChain struct {
pow pow.PoW
processor Processor // block processor interface
validator Validator // block and state validator interface
+ vmConfig vm.Config
}
// NewBlockChain returns a fully initialised block chain using information
// available in the database. It initialiser the default Ethereum Validator and
// Processor.
-func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, pow pow.PoW, mux *event.TypeMux) (*BlockChain, error) {
+func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, pow pow.PoW, mux *event.TypeMux, vmConfig vm.Config) (*BlockChain, error) {
bodyCache, _ := lru.New(bodyCacheLimit)
bodyRLPCache, _ := lru.New(bodyCacheLimit)
blockCache, _ := lru.New(blockCacheLimit)
@@ -128,6 +129,7 @@ func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, pow pow.P
blockCache: blockCache,
futureBlocks: futureBlocks,
pow: pow,
+ vmConfig: vmConfig,
}
bc.SetValidator(NewBlockValidator(config, bc, pow))
bc.SetProcessor(NewStateProcessor(config, bc))
@@ -954,7 +956,7 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
return i, err
}
// Process block using the parent state as reference point.
- receipts, logs, usedGas, err := self.processor.Process(block, self.stateCache, vm.Config{})
+ receipts, logs, usedGas, err := self.processor.Process(block, self.stateCache, self.vmConfig)
if err != nil {
self.reportBlock(block, receipts, err)
return i, err
@@ -1004,6 +1006,10 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
if err := WriteMipmapBloom(self.chainDb, block.NumberU64(), receipts); err != nil {
return i, err
}
+ // Write hash preimages
+ if err := WritePreimages(self.chainDb, block.NumberU64(), self.stateCache.Preimages()); err != nil {
+ return i, err
+ }
case SideStatTy:
if glog.V(logger.Detail) {
glog.Infof("inserted forked block #%d [%x…] (TD=%v) in %9v: %3d txs %d uncles.", block.Number(), block.Hash().Bytes()[0:4], block.Difficulty(), common.PrettyDuration(time.Since(bstart)), len(block.Transactions()), len(block.Uncles()))
diff --git a/core/blockchain_test.go b/core/blockchain_test.go
index a5a83ba60..8f1383acd 100644
--- a/core/blockchain_test.go
+++ b/core/blockchain_test.go
@@ -53,7 +53,7 @@ func thePow() pow.PoW {
func theBlockChain(db ethdb.Database, t *testing.T) *BlockChain {
var eventMux event.TypeMux
WriteTestNetGenesisBlock(db)
- blockchain, err := NewBlockChain(db, testChainConfig(), thePow(), &eventMux)
+ blockchain, err := NewBlockChain(db, testChainConfig(), thePow(), &eventMux, vm.Config{})
if err != nil {
t.Error("failed creating blockchain:", err)
t.FailNow()
@@ -614,7 +614,7 @@ func testReorgBadHashes(t *testing.T, full bool) {
defer func() { delete(BadHashes, headers[3].Hash()) }()
}
// Create a new chain manager and check it rolled back the state
- ncm, err := NewBlockChain(db, testChainConfig(), FakePow{}, new(event.TypeMux))
+ ncm, err := NewBlockChain(db, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
if err != nil {
t.Fatalf("failed to create new chain manager: %v", err)
}
@@ -735,7 +735,7 @@ func TestFastVsFullChains(t *testing.T) {
archiveDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(archiveDb, GenesisAccount{address, funds})
- archive, _ := NewBlockChain(archiveDb, testChainConfig(), FakePow{}, new(event.TypeMux))
+ archive, _ := NewBlockChain(archiveDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
if n, err := archive.InsertChain(blocks); err != nil {
t.Fatalf("failed to process block %d: %v", n, err)
@@ -743,7 +743,7 @@ func TestFastVsFullChains(t *testing.T) {
// Fast import the chain as a non-archive node to test
fastDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(fastDb, GenesisAccount{address, funds})
- fast, _ := NewBlockChain(fastDb, testChainConfig(), FakePow{}, new(event.TypeMux))
+ fast, _ := NewBlockChain(fastDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
headers := make([]*types.Header, len(blocks))
for i, block := range blocks {
@@ -819,7 +819,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
archiveDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(archiveDb, GenesisAccount{address, funds})
- archive, _ := NewBlockChain(archiveDb, testChainConfig(), FakePow{}, new(event.TypeMux))
+ archive, _ := NewBlockChain(archiveDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
if n, err := archive.InsertChain(blocks); err != nil {
t.Fatalf("failed to process block %d: %v", n, err)
@@ -831,7 +831,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
// Import the chain as a non-archive node and ensure all pointers are updated
fastDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(fastDb, GenesisAccount{address, funds})
- fast, _ := NewBlockChain(fastDb, testChainConfig(), FakePow{}, new(event.TypeMux))
+ fast, _ := NewBlockChain(fastDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
headers := make([]*types.Header, len(blocks))
for i, block := range blocks {
@@ -850,7 +850,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
// Import the chain as a light node and ensure all pointers are updated
lightDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(lightDb, GenesisAccount{address, funds})
- light, _ := NewBlockChain(lightDb, testChainConfig(), FakePow{}, new(event.TypeMux))
+ light, _ := NewBlockChain(lightDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{})
if n, err := light.InsertHeaderChain(headers, 1); err != nil {
t.Fatalf("failed to insert header %d: %v", n, err)
@@ -916,7 +916,7 @@ func TestChainTxReorgs(t *testing.T) {
})
// Import the chain. This runs all block validation rules.
evmux := &event.TypeMux{}
- blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux)
+ blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{})
if i, err := blockchain.InsertChain(chain); err != nil {
t.Fatalf("failed to insert original chain[%d]: %v", i, err)
}
@@ -990,7 +990,7 @@ func TestLogReorgs(t *testing.T) {
)
evmux := &event.TypeMux{}
- blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux)
+ blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{})
subs := evmux.Subscribe(RemovedLogsEvent{})
chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 2, func(i int, gen *BlockGen) {
@@ -1027,7 +1027,7 @@ func TestReorgSideEvent(t *testing.T) {
)
evmux := &event.TypeMux{}
- blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux)
+ blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{})
chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 3, func(i int, gen *BlockGen) {})
if _, err := blockchain.InsertChain(chain); err != nil {
@@ -1103,7 +1103,7 @@ func TestCanonicalBlockRetrieval(t *testing.T) {
)
evmux := &event.TypeMux{}
- blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux)
+ blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{})
chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 10, func(i int, gen *BlockGen) {})
@@ -1146,7 +1146,7 @@ func TestEIP155Transition(t *testing.T) {
mux event.TypeMux
)
- blockchain, _ := NewBlockChain(db, config, FakePow{}, &mux)
+ blockchain, _ := NewBlockChain(db, config, FakePow{}, &mux, vm.Config{})
blocks, _ := GenerateChain(config, genesis, db, 4, func(i int, block *BlockGen) {
var (
tx *types.Transaction
@@ -1250,7 +1250,7 @@ func TestEIP161AccountRemoval(t *testing.T) {
}
mux event.TypeMux
- blockchain, _ = NewBlockChain(db, config, FakePow{}, &mux)
+ blockchain, _ = NewBlockChain(db, config, FakePow{}, &mux, vm.Config{})
)
blocks, _ := GenerateChain(config, genesis, db, 3, func(i int, block *BlockGen) {
var (
diff --git a/core/chain_makers.go b/core/chain_makers.go
index 4a838a5aa..8b3b015a8 100644
--- a/core/chain_makers.go
+++ b/core/chain_makers.go
@@ -256,7 +256,7 @@ func newCanonical(n int, full bool) (ethdb.Database, *BlockChain, error) {
// Initialize a fresh chain with only a genesis block
genesis, _ := WriteTestNetGenesisBlock(db)
- blockchain, _ := NewBlockChain(db, MakeChainConfig(), FakePow{}, evmux)
+ blockchain, _ := NewBlockChain(db, MakeChainConfig(), FakePow{}, evmux, vm.Config{})
// Create and inject the requested chain
if n == 0 {
return db, blockchain, nil
diff --git a/core/chain_makers_test.go b/core/chain_makers_test.go
index 942f4ace2..2796817c0 100644
--- a/core/chain_makers_test.go
+++ b/core/chain_makers_test.go
@@ -21,6 +21,7 @@ import (
"math/big"
"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/event"
@@ -81,7 +82,7 @@ func ExampleGenerateChain() {
// Import the chain. This runs all block validation rules.
evmux := &event.TypeMux{}
- blockchain, _ := NewBlockChain(db, chainConfig, FakePow{}, evmux)
+ blockchain, _ := NewBlockChain(db, chainConfig, FakePow{}, evmux, vm.Config{})
if i, err := blockchain.InsertChain(chain); err != nil {
fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
return
diff --git a/core/dao_test.go b/core/dao_test.go
index f461131f4..b8b4c71cf 100644
--- a/core/dao_test.go
+++ b/core/dao_test.go
@@ -20,6 +20,7 @@ import (
"math/big"
"testing"
+ "github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/params"
@@ -39,12 +40,12 @@ func TestDAOForkRangeExtradata(t *testing.T) {
proDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(proDb)
proConf := &params.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true}
- proBc, _ := NewBlockChain(proDb, proConf, new(FakePow), new(event.TypeMux))
+ proBc, _ := NewBlockChain(proDb, proConf, new(FakePow), new(event.TypeMux), vm.Config{})
conDb, _ := ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(conDb)
conConf := &params.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false}
- conBc, _ := NewBlockChain(conDb, conConf, new(FakePow), new(event.TypeMux))
+ conBc, _ := NewBlockChain(conDb, conConf, new(FakePow), new(event.TypeMux), vm.Config{})
if _, err := proBc.InsertChain(prefix); err != nil {
t.Fatalf("pro-fork: failed to import chain prefix: %v", err)
@@ -57,7 +58,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
// Create a pro-fork block, and try to feed into the no-fork chain
db, _ = ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(db)
- bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux))
+ bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux), vm.Config{})
blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
@@ -78,7 +79,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
// Create a no-fork block, and try to feed into the pro-fork chain
db, _ = ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(db)
- bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux))
+ bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux), vm.Config{})
blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
@@ -100,7 +101,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
// Verify that contra-forkers accept pro-fork extra-datas after forking finishes
db, _ = ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(db)
- bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux))
+ bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux), vm.Config{})
blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
@@ -116,7 +117,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
// Verify that pro-forkers accept contra-fork extra-datas after forking finishes
db, _ = ethdb.NewMemDatabase()
WriteGenesisBlockForTesting(db)
- bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux))
+ bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux), vm.Config{})
blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
diff --git a/core/database_util.go b/core/database_util.go
index 2060b8b6a..229f21b5b 100644
--- a/core/database_util.go
+++ b/core/database_util.go
@@ -30,6 +30,7 @@ import (
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
+ "github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
)
@@ -39,12 +40,13 @@ var (
headBlockKey = []byte("LastBlock")
headFastKey = []byte("LastFast")
- headerPrefix = []byte("h") // headerPrefix + num (uint64 big endian) + hash -> header
- tdSuffix = []byte("t") // headerPrefix + num (uint64 big endian) + hash + tdSuffix -> td
- numSuffix = []byte("n") // headerPrefix + num (uint64 big endian) + numSuffix -> hash
- blockHashPrefix = []byte("H") // blockHashPrefix + hash -> num (uint64 big endian)
- bodyPrefix = []byte("b") // bodyPrefix + num (uint64 big endian) + hash -> block body
- blockReceiptsPrefix = []byte("r") // blockReceiptsPrefix + num (uint64 big endian) + hash -> block receipts
+ headerPrefix = []byte("h") // headerPrefix + num (uint64 big endian) + hash -> header
+ tdSuffix = []byte("t") // headerPrefix + num (uint64 big endian) + hash + tdSuffix -> td
+ numSuffix = []byte("n") // headerPrefix + num (uint64 big endian) + numSuffix -> hash
+ blockHashPrefix = []byte("H") // blockHashPrefix + hash -> num (uint64 big endian)
+ bodyPrefix = []byte("b") // bodyPrefix + num (uint64 big endian) + hash -> block body
+ blockReceiptsPrefix = []byte("r") // blockReceiptsPrefix + num (uint64 big endian) + hash -> block receipts
+ preimagePrefix = "secure-key-" // preimagePrefix + hash -> preimage
txMetaSuffix = []byte{0x01}
receiptsPrefix = []byte("receipts-")
@@ -66,6 +68,9 @@ var (
ChainConfigNotFoundErr = errors.New("ChainConfig not found") // general config not found error
mipmapBloomMu sync.Mutex // protect against race condition when updating mipmap blooms
+
+ preimageCounter = metrics.NewCounter("db/preimage/total")
+ preimageHitCounter = metrics.NewCounter("db/preimage/hits")
)
// encodeBlockNumber encodes a block number as big endian uint64
@@ -595,6 +600,34 @@ func GetMipmapBloom(db ethdb.Database, number, level uint64) types.Bloom {
return types.BytesToBloom(bloomDat)
}
+// PreimageTable returns a Database instance with the key prefix for preimage entries.
+func PreimageTable(db ethdb.Database) ethdb.Database {
+ return ethdb.NewTable(db, preimagePrefix)
+}
+
+// WritePreimages writes the provided set of preimages to the database. `number` is the
+// current block number, and is used for debug messages only.
+func WritePreimages(db ethdb.Database, number uint64, preimages map[common.Hash][]byte) error {
+ table := PreimageTable(db)
+ batch := table.NewBatch()
+ hitCount := 0
+ for hash, preimage := range preimages {
+ if _, err := table.Get(hash.Bytes()); err != nil {
+ batch.Put(hash.Bytes(), preimage)
+ hitCount += 1
+ }
+ }
+ preimageCounter.Inc(int64(len(preimages)))
+ preimageHitCounter.Inc(int64(hitCount))
+ if hitCount > 0 {
+ if err := batch.Write(); err != nil {
+ return fmt.Errorf("preimage write fail for block %d: %v", number, err)
+ }
+ glog.V(logger.Debug).Infof("%d preimages in block %d, including %d new", len(preimages), number, hitCount)
+ }
+ return nil
+}
+
// GetBlockChainVersion reads the version number from db.
func GetBlockChainVersion(db ethdb.Database) int {
var vsn uint
diff --git a/core/state/journal.go b/core/state/journal.go
index d1e73e7d0..68d07fa03 100644
--- a/core/state/journal.go
+++ b/core/state/journal.go
@@ -67,6 +67,9 @@ type (
addLogChange struct {
txhash common.Hash
}
+ addPreimageChange struct {
+ hash common.Hash
+ }
touchChange struct {
account *common.Address
prev bool
@@ -127,3 +130,7 @@ func (ch addLogChange) undo(s *StateDB) {
s.logs[ch.txhash] = logs[:len(logs)-1]
}
}
+
+func (ch addPreimageChange) undo(s *StateDB) {
+ delete(s.preimages, ch.hash)
+}
diff --git a/core/state/statedb.go b/core/state/statedb.go
index 063e2b469..bbccba9fb 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -75,6 +75,8 @@ type StateDB struct {
logs map[common.Hash][]*types.Log
logSize uint
+ preimages map[common.Hash][]byte
+
// Journal of state modifications. This is the backbone of
// Snapshot and RevertToSnapshot.
journal journal
@@ -99,6 +101,7 @@ func New(root common.Hash, db ethdb.Database) (*StateDB, error) {
stateObjectsDirty: make(map[common.Address]struct{}),
refund: new(big.Int),
logs: make(map[common.Hash][]*types.Log),
+ preimages: make(map[common.Hash][]byte),
}, nil
}
@@ -120,6 +123,7 @@ func (self *StateDB) New(root common.Hash) (*StateDB, error) {
stateObjectsDirty: make(map[common.Address]struct{}),
refund: new(big.Int),
logs: make(map[common.Hash][]*types.Log),
+ preimages: make(map[common.Hash][]byte),
}, nil
}
@@ -141,6 +145,7 @@ func (self *StateDB) Reset(root common.Hash) error {
self.txIndex = 0
self.logs = make(map[common.Hash][]*types.Log)
self.logSize = 0
+ self.preimages = make(map[common.Hash][]byte)
self.clearJournalAndRefund()
return nil
@@ -199,6 +204,21 @@ func (self *StateDB) Logs() []*types.Log {
return logs
}
+// AddPreimage records a SHA3 preimage seen by the VM.
+func (self *StateDB) AddPreimage(hash common.Hash, preimage []byte) {
+ if _, ok := self.preimages[hash]; !ok {
+ self.journal = append(self.journal, addPreimageChange{hash: hash})
+ pi := make([]byte, len(preimage))
+ copy(pi, preimage)
+ self.preimages[hash] = pi
+ }
+}
+
+// Preimages returns a list of SHA3 preimages that have been submitted.
+func (self *StateDB) Preimages() map[common.Hash][]byte {
+ return self.preimages
+}
+
func (self *StateDB) AddRefund(gas *big.Int) {
self.journal = append(self.journal, refundChange{prev: new(big.Int).Set(self.refund)})
self.refund.Add(self.refund, gas)
@@ -477,8 +497,9 @@ func (self *StateDB) Copy() *StateDB {
refund: new(big.Int).Set(self.refund),
logs: make(map[common.Hash][]*types.Log, len(self.logs)),
logSize: self.logSize,
+ preimages: make(map[common.Hash][]byte),
}
- // Copy the dirty states and logs
+ // Copy the dirty states, logs, and preimages
for addr := range self.stateObjectsDirty {
state.stateObjects[addr] = self.stateObjects[addr].deepCopy(state, state.MarkStateObjectDirty)
state.stateObjectsDirty[addr] = struct{}{}
@@ -487,6 +508,9 @@ func (self *StateDB) Copy() *StateDB {
state.logs[hash] = make([]*types.Log, len(logs))
copy(state.logs[hash], logs)
}
+ for hash, preimage := range self.preimages {
+ state.preimages[hash] = preimage
+ }
return state
}
diff --git a/core/state_processor.go b/core/state_processor.go
index 4f6ca651e..6485e9abd 100644
--- a/core/state_processor.go
+++ b/core/state_processor.go
@@ -99,7 +99,7 @@ func ApplyTransaction(config *params.ChainConfig, bc *BlockChain, gp *GasPool, s
context := NewEVMContext(msg, header, bc)
// Create a new environment which holds all relevant information
// about the transaction and calling mechanisms.
- vmenv := vm.NewEVM(context, statedb, config, vm.Config{})
+ vmenv := vm.NewEVM(context, statedb, config, cfg)
// Apply the transaction to the current state (included in the env)
_, gas, err := ApplyMessage(vmenv, msg, gp)
if err != nil {
diff --git a/core/vm/instructions.go b/core/vm/instructions.go
index 5bfa73a30..3b1b06cca 100644
--- a/core/vm/instructions.go
+++ b/core/vm/instructions.go
@@ -247,7 +247,12 @@ func opMulmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *S
func opSha3(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
offset, size := stack.pop(), stack.pop()
- hash := crypto.Keccak256(memory.Get(offset.Int64(), size.Int64()))
+ data := memory.Get(offset.Int64(), size.Int64())
+ hash := crypto.Keccak256(data)
+
+ if env.vmConfig.EnablePreimageRecording {
+ env.StateDB.AddPreimage(common.BytesToHash(hash), data)
+ }
stack.push(common.BytesToBig(hash))
return nil, nil
diff --git a/core/vm/interface.go b/core/vm/interface.go
index 8617b2d0f..6f15112ee 100644
--- a/core/vm/interface.go
+++ b/core/vm/interface.go
@@ -60,6 +60,7 @@ type StateDB interface {
Snapshot() int
AddLog(*types.Log)
+ AddPreimage(common.Hash, []byte)
}
// Account represents a contract or basic ethereum account.
diff --git a/core/vm/noop.go b/core/vm/noop.go
index ef6837273..7835eeaf3 100644
--- a/core/vm/noop.go
+++ b/core/vm/noop.go
@@ -67,3 +67,4 @@ func (NoopStateDB) Empty(common.Address) bool { return f
func (NoopStateDB) RevertToSnapshot(int) {}
func (NoopStateDB) Snapshot() int { return 0 }
func (NoopStateDB) AddLog(*types.Log) {}
+func (NoopStateDB) AddPreimage(common.Hash, []byte) {}
diff --git a/core/vm/vm.go b/core/vm/vm.go
index 56081f12c..a5f48750d 100644
--- a/core/vm/vm.go
+++ b/core/vm/vm.go
@@ -44,6 +44,8 @@ type Config struct {
NoRecursion bool
// Disable gas metering
DisableGasMetering bool
+ // Enable recording of SHA3/keccak preimages
+ EnablePreimageRecording bool
// JumpTable contains the EVM instruction table. This
// may me left uninitialised and will be set the default
// table.