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-rw-r--r--core/blockchain.go13
-rw-r--r--core/state/statedb.go1
-rw-r--r--eth/downloader/downloader.go104
-rw-r--r--eth/downloader/downloader_test.go17
-rw-r--r--eth/downloader/types.go4
-rw-r--r--eth/handler.go7
6 files changed, 85 insertions, 61 deletions
diff --git a/core/blockchain.go b/core/blockchain.go
index 9d526e352..95ed06d8d 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -587,6 +587,19 @@ func (bc *BlockChain) HasBlock(hash common.Hash) bool {
return bc.GetBlock(hash) != nil
}
+// HasBlockAndState checks if a block and associated state trie is fully present
+// in the database or not, caching it if present.
+func (bc *BlockChain) HasBlockAndState(hash common.Hash) bool {
+ // Check first that the block itself is known
+ block := bc.GetBlock(hash)
+ if block == nil {
+ return false
+ }
+ // Ensure the associated state is also present
+ _, err := state.New(block.Root(), bc.chainDb)
+ return err == nil
+}
+
// GetBlock retrieves a block from the database by hash, caching it if found.
func (self *BlockChain) GetBlock(hash common.Hash) *types.Block {
// Short circuit if the block's already in the cache, retrieve otherwise
diff --git a/core/state/statedb.go b/core/state/statedb.go
index ab93870bf..413321057 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -57,7 +57,6 @@ type StateDB struct {
func New(root common.Hash, db ethdb.Database) (*StateDB, error) {
tr, err := trie.NewSecure(root, db)
if err != nil {
- glog.Errorf("can't create state trie with root %x: %v", root[:], err)
return nil, err
}
return &StateDB{
diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index c272d05af..163994730 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -112,20 +112,20 @@ type Downloader struct {
syncStatsLock sync.RWMutex // Lock protecting the sync stats fields
// Callbacks
- hasHeader headerCheckFn // Checks if a header is present in the chain
- hasBlock blockCheckFn // Checks if a block is present in the chain
- getHeader headerRetrievalFn // Retrieves a header from the chain
- getBlock blockRetrievalFn // Retrieves a block from the chain
- headHeader headHeaderRetrievalFn // Retrieves the head header from the chain
- headBlock headBlockRetrievalFn // Retrieves the head block from the chain
- headFastBlock headFastBlockRetrievalFn // Retrieves the head fast-sync block from the chain
- commitHeadBlock headBlockCommitterFn // Commits a manually assembled block as the chain head
- getTd tdRetrievalFn // Retrieves the TD of a block from the chain
- insertHeaders headerChainInsertFn // Injects a batch of headers into the chain
- insertBlocks blockChainInsertFn // Injects a batch of blocks into the chain
- insertReceipts receiptChainInsertFn // Injects a batch of blocks and their receipts into the chain
- rollback chainRollbackFn // Removes a batch of recently added chain links
- dropPeer peerDropFn // Drops a peer for misbehaving
+ hasHeader headerCheckFn // Checks if a header is present in the chain
+ hasBlockAndState blockAndStateCheckFn // Checks if a block and associated state is present in the chain
+ getHeader headerRetrievalFn // Retrieves a header from the chain
+ getBlock blockRetrievalFn // Retrieves a block from the chain
+ headHeader headHeaderRetrievalFn // Retrieves the head header from the chain
+ headBlock headBlockRetrievalFn // Retrieves the head block from the chain
+ headFastBlock headFastBlockRetrievalFn // Retrieves the head fast-sync block from the chain
+ commitHeadBlock headBlockCommitterFn // Commits a manually assembled block as the chain head
+ getTd tdRetrievalFn // Retrieves the TD of a block from the chain
+ insertHeaders headerChainInsertFn // Injects a batch of headers into the chain
+ insertBlocks blockChainInsertFn // Injects a batch of blocks into the chain
+ insertReceipts receiptChainInsertFn // Injects a batch of blocks and their receipts into the chain
+ rollback chainRollbackFn // Removes a batch of recently added chain links
+ dropPeer peerDropFn // Drops a peer for misbehaving
// Status
synchroniseMock func(id string, hash common.Hash) error // Replacement for synchronise during testing
@@ -156,41 +156,41 @@ type Downloader struct {
}
// New creates a new downloader to fetch hashes and blocks from remote peers.
-func New(stateDb ethdb.Database, mux *event.TypeMux, hasHeader headerCheckFn, hasBlock blockCheckFn, getHeader headerRetrievalFn,
- getBlock blockRetrievalFn, headHeader headHeaderRetrievalFn, headBlock headBlockRetrievalFn, headFastBlock headFastBlockRetrievalFn,
- commitHeadBlock headBlockCommitterFn, getTd tdRetrievalFn, insertHeaders headerChainInsertFn, insertBlocks blockChainInsertFn,
- insertReceipts receiptChainInsertFn, rollback chainRollbackFn, dropPeer peerDropFn) *Downloader {
+func New(stateDb ethdb.Database, mux *event.TypeMux, hasHeader headerCheckFn, hasBlockAndState blockAndStateCheckFn,
+ getHeader headerRetrievalFn, getBlock blockRetrievalFn, headHeader headHeaderRetrievalFn, headBlock headBlockRetrievalFn,
+ headFastBlock headFastBlockRetrievalFn, commitHeadBlock headBlockCommitterFn, getTd tdRetrievalFn, insertHeaders headerChainInsertFn,
+ insertBlocks blockChainInsertFn, insertReceipts receiptChainInsertFn, rollback chainRollbackFn, dropPeer peerDropFn) *Downloader {
return &Downloader{
- mode: FullSync,
- mux: mux,
- queue: newQueue(stateDb),
- peers: newPeerSet(),
- hasHeader: hasHeader,
- hasBlock: hasBlock,
- getHeader: getHeader,
- getBlock: getBlock,
- headHeader: headHeader,
- headBlock: headBlock,
- headFastBlock: headFastBlock,
- commitHeadBlock: commitHeadBlock,
- getTd: getTd,
- insertHeaders: insertHeaders,
- insertBlocks: insertBlocks,
- insertReceipts: insertReceipts,
- rollback: rollback,
- dropPeer: dropPeer,
- newPeerCh: make(chan *peer, 1),
- hashCh: make(chan dataPack, 1),
- blockCh: make(chan dataPack, 1),
- headerCh: make(chan dataPack, 1),
- bodyCh: make(chan dataPack, 1),
- receiptCh: make(chan dataPack, 1),
- stateCh: make(chan dataPack, 1),
- blockWakeCh: make(chan bool, 1),
- bodyWakeCh: make(chan bool, 1),
- receiptWakeCh: make(chan bool, 1),
- stateWakeCh: make(chan bool, 1),
+ mode: FullSync,
+ mux: mux,
+ queue: newQueue(stateDb),
+ peers: newPeerSet(),
+ hasHeader: hasHeader,
+ hasBlockAndState: hasBlockAndState,
+ getHeader: getHeader,
+ getBlock: getBlock,
+ headHeader: headHeader,
+ headBlock: headBlock,
+ headFastBlock: headFastBlock,
+ commitHeadBlock: commitHeadBlock,
+ getTd: getTd,
+ insertHeaders: insertHeaders,
+ insertBlocks: insertBlocks,
+ insertReceipts: insertReceipts,
+ rollback: rollback,
+ dropPeer: dropPeer,
+ newPeerCh: make(chan *peer, 1),
+ hashCh: make(chan dataPack, 1),
+ blockCh: make(chan dataPack, 1),
+ headerCh: make(chan dataPack, 1),
+ bodyCh: make(chan dataPack, 1),
+ receiptCh: make(chan dataPack, 1),
+ stateCh: make(chan dataPack, 1),
+ blockWakeCh: make(chan bool, 1),
+ bodyWakeCh: make(chan bool, 1),
+ receiptWakeCh: make(chan bool, 1),
+ stateWakeCh: make(chan bool, 1),
}
}
@@ -564,7 +564,7 @@ func (d *Downloader) findAncestor61(p *peer) (uint64, error) {
// Check if a common ancestor was found
finished = true
for i := len(hashes) - 1; i >= 0; i-- {
- if d.hasBlock(hashes[i]) {
+ if d.hasBlockAndState(hashes[i]) {
number, hash = uint64(from)+uint64(i), hashes[i]
break
}
@@ -620,11 +620,11 @@ func (d *Downloader) findAncestor61(p *peer) (uint64, error) {
arrived = true
// Modify the search interval based on the response
- block := d.getBlock(hashes[0])
- if block == nil {
+ if !d.hasBlockAndState(hashes[0]) {
end = check
break
}
+ block := d.getBlock(hashes[0]) // this doesn't check state, hence the above explicit check
if block.NumberU64() != check {
glog.V(logger.Debug).Infof("%v: non requested hash #%d [%x…], instead of #%d", p, block.NumberU64(), block.Hash().Bytes()[:4], check)
return 0, errBadPeer
@@ -989,7 +989,7 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
// Check if a common ancestor was found
finished = true
for i := len(headers) - 1; i >= 0; i-- {
- if (d.mode != LightSync && d.hasBlock(headers[i].Hash())) || (d.mode == LightSync && d.hasHeader(headers[i].Hash())) {
+ if (d.mode != LightSync && d.hasBlockAndState(headers[i].Hash())) || (d.mode == LightSync && d.hasHeader(headers[i].Hash())) {
number, hash = headers[i].Number.Uint64(), headers[i].Hash()
break
}
@@ -1045,7 +1045,7 @@ func (d *Downloader) findAncestor(p *peer) (uint64, error) {
arrived = true
// Modify the search interval based on the response
- if (d.mode == FullSync && !d.hasBlock(headers[0].Hash())) || (d.mode != FullSync && !d.hasHeader(headers[0].Hash())) {
+ if (d.mode == FullSync && !d.hasBlockAndState(headers[0].Hash())) || (d.mode != FullSync && !d.hasHeader(headers[0].Hash())) {
end = check
break
}
diff --git a/eth/downloader/downloader_test.go b/eth/downloader/downloader_test.go
index 347a0e3f0..418243b20 100644
--- a/eth/downloader/downloader_test.go
+++ b/eth/downloader/downloader_test.go
@@ -153,6 +153,8 @@ func newTester() *downloadTester {
peerChainTds: make(map[string]map[common.Hash]*big.Int),
}
tester.stateDb, _ = ethdb.NewMemDatabase()
+ tester.stateDb.Put(genesis.Root().Bytes(), []byte{0x00})
+
tester.downloader = New(tester.stateDb, new(event.TypeMux), tester.hasHeader, tester.hasBlock, tester.getHeader,
tester.getBlock, tester.headHeader, tester.headBlock, tester.headFastBlock, tester.commitHeadBlock, tester.getTd,
tester.insertHeaders, tester.insertBlocks, tester.insertReceipts, tester.rollback, tester.dropPeer)
@@ -180,9 +182,14 @@ func (dl *downloadTester) hasHeader(hash common.Hash) bool {
return dl.getHeader(hash) != nil
}
-// hasBlock checks if a block is present in the testers canonical chain.
+// hasBlock checks if a block and associated state is present in the testers canonical chain.
func (dl *downloadTester) hasBlock(hash common.Hash) bool {
- return dl.getBlock(hash) != nil
+ block := dl.getBlock(hash)
+ if block == nil {
+ return false
+ }
+ _, err := dl.stateDb.Get(block.Root().Bytes())
+ return err == nil
}
// getHeader retrieves a header from the testers canonical chain.
@@ -295,8 +302,10 @@ func (dl *downloadTester) insertBlocks(blocks types.Blocks) (int, error) {
defer dl.lock.Unlock()
for i, block := range blocks {
- if _, ok := dl.ownBlocks[block.ParentHash()]; !ok {
+ if parent, ok := dl.ownBlocks[block.ParentHash()]; !ok {
return i, errors.New("unknown parent")
+ } else if _, err := dl.stateDb.Get(parent.Root().Bytes()); err != nil {
+ return i, fmt.Errorf("unknown parent state %x: %v", parent.Root(), err)
}
if _, ok := dl.ownHeaders[block.Hash()]; !ok {
dl.ownHashes = append(dl.ownHashes, block.Hash())
@@ -1103,6 +1112,8 @@ func testShiftedHeaderAttack(t *testing.T, protocol int, mode SyncMode) {
}
// Tests that upon detecting an invalid header, the recent ones are rolled back
+// for various failure scenarios. Afterwards a full sync is attempted to make
+// sure no state was corrupted.
func TestInvalidHeaderRollback63Fast(t *testing.T) { testInvalidHeaderRollback(t, 63, FastSync) }
func TestInvalidHeaderRollback64Fast(t *testing.T) { testInvalidHeaderRollback(t, 64, FastSync) }
func TestInvalidHeaderRollback64Light(t *testing.T) { testInvalidHeaderRollback(t, 64, LightSync) }
diff --git a/eth/downloader/types.go b/eth/downloader/types.go
index 5937be606..b67fff1f8 100644
--- a/eth/downloader/types.go
+++ b/eth/downloader/types.go
@@ -27,8 +27,8 @@ import (
// headerCheckFn is a callback type for verifying a header's presence in the local chain.
type headerCheckFn func(common.Hash) bool
-// blockCheckFn is a callback type for verifying a block's presence in the local chain.
-type blockCheckFn func(common.Hash) bool
+// blockAndStateCheckFn is a callback type for verifying block and associated states' presence in the local chain.
+type blockAndStateCheckFn func(common.Hash) bool
// headerRetrievalFn is a callback type for retrieving a header from the local chain.
type headerRetrievalFn func(common.Hash) *types.Header
diff --git a/eth/handler.go b/eth/handler.go
index d04f79105..108a6679c 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -138,9 +138,10 @@ func NewProtocolManager(fastSync bool, networkId int, mux *event.TypeMux, txpool
return nil, errIncompatibleConfig
}
// Construct the different synchronisation mechanisms
- manager.downloader = downloader.New(chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlock, blockchain.GetHeader, blockchain.GetBlock,
- blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead, blockchain.GetTd,
- blockchain.InsertHeaderChain, blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback, manager.removePeer)
+ manager.downloader = downloader.New(chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlockAndState, blockchain.GetHeader,
+ blockchain.GetBlock, blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead,
+ blockchain.GetTd, blockchain.InsertHeaderChain, blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback,
+ manager.removePeer)
validator := func(block *types.Block, parent *types.Block) error {
return core.ValidateHeader(pow, block.Header(), parent.Header(), true, false)
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 16:03:22 +0800