/
handle_msg.go
533 lines (501 loc) · 18.8 KB
/
handle_msg.go
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// Copyright 2021 The go-aoa Authors
// This file is part of the go-aoa library.
//
// The the go-aoa 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 the go-aoa 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-aoa library. If not, see <http://www.gnu.org/licenses/>.
package aoa
import (
"encoding/json"
"github.com/Aurorachain-io/go-aoa/common"
"github.com/Aurorachain-io/go-aoa/core"
"github.com/Aurorachain-io/go-aoa/core/types"
"github.com/Aurorachain-io/go-aoa/crypto"
"github.com/Aurorachain-io/go-aoa/aoa/downloader"
"github.com/Aurorachain-io/go-aoa/log"
"github.com/Aurorachain-io/go-aoa/p2p"
"github.com/Aurorachain-io/go-aoa/rlp"
"math/big"
"strings"
"sync/atomic"
"time"
)
type broadcastMsgHandle interface {
// Status messages should never arrive after the handshake
dealStatusMsg(msg p2p.Msg, p *peer) error
// Block header query, collect the requested headers and reply
dealGetBlockHeadersMsg(msg p2p.Msg, p *peer) error
dealBlockHeadersMsg(msg p2p.Msg, p *peer) error
dealGetBlockBodiesMsg(msg p2p.Msg, p *peer) error
dealBlockBodiesMsg(msg p2p.Msg, p *peer) error
dealGetNodeDataMsg(msg p2p.Msg, p *peer) error
dealNodeDataMsg(msg p2p.Msg, p *peer) error
dealGetReceiptsMsg(msg p2p.Msg, p *peer) error
dealReceiptsMsg(msg p2p.Msg, p *peer) error
dealNewBlockHashesMsg(msg p2p.Msg, p *peer) error
dealTxMsg(msg p2p.Msg, p *peer) error
dealNewBlockMsg(msg p2p.Msg, p *peer) error
dealPreBlockMsg(msg p2p.Msg, p *peer) error
dealSignaturesBlockMsg(msg p2p.Msg, p *peer) error
}
func (pm *ProtocolManager) dealStatusMsg(msg p2p.Msg, p *peer) error {
return errResp(ErrExtraStatusMsg, "uncontrolled status message")
}
func (pm *ProtocolManager) dealGetBlockHeadersMsg(msg p2p.Msg, p *peer) error {
// Decode the complex header query
var query getBlockHeadersData
if err := msg.Decode(&query); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
hashMode := query.Origin.Hash != (common.Hash{})
// Gather headers until the fetch or network limits is reached
var (
bytes common.StorageSize
headers []*types.Header
unknown bool
)
for !unknown && len(headers) < int(query.Amount) && bytes < softResponseLimit && len(headers) < downloader.MaxHeaderFetch {
// Retrieve the next header satisfying the query
var origin *types.Header
if hashMode {
origin = pm.blockchain.GetHeaderByHash(query.Origin.Hash)
} else {
origin = pm.blockchain.GetHeaderByNumber(query.Origin.Number)
}
if origin == nil {
break
}
number := origin.Number.Uint64()
headers = append(headers, origin)
bytes += estHeaderRlpSize
// Advance to the next header of the query
switch {
case query.Origin.Hash != (common.Hash{}) && query.Reverse:
// Hash based traversal towards the genesis block
for i := 0; i < int(query.Skip)+1; i++ {
if header := pm.blockchain.GetHeader(query.Origin.Hash, number); header != nil {
query.Origin.Hash = header.ParentHash
number--
} else {
unknown = true
break
}
}
case query.Origin.Hash != (common.Hash{}) && !query.Reverse:
// Hash based traversal towards the leaf block
var (
current = origin.Number.Uint64()
next = current + query.Skip + 1
)
if next <= current {
infos, _ := json.MarshalIndent(p.Peer.Info(), "", " ")
p.Log().Warn("GetBlockHeaders skip overflow attack", "current", current, "skip", query.Skip, "next", next, "attacker", infos)
unknown = true
} else {
if header := pm.blockchain.GetHeaderByNumber(next); header != nil {
if pm.blockchain.GetBlockHashesFromHash(header.Hash(), query.Skip+1)[query.Skip] == query.Origin.Hash {
query.Origin.Hash = header.Hash()
} else {
unknown = true
}
} else {
unknown = true
}
}
case query.Reverse:
// Number based traversal towards the genesis block
if query.Origin.Number >= query.Skip+1 {
query.Origin.Number -= query.Skip + 1
} else {
unknown = true
}
case !query.Reverse:
// Number based traversal towards the leaf block
query.Origin.Number += query.Skip + 1
}
}
return p.SendBlockHeaders(headers)
}
func (pm *ProtocolManager) dealBlockHeadersMsg(msg p2p.Msg, p *peer) error {
// A batch of headers arrived to one of our previous requests
var headers []*types.Header
if err := msg.Decode(&headers); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// If no headers were received, but we're expending a DAO fork check, maybe it's that
if len(headers) == 0 && p.forkDrop != nil {
// Possibly an empty reply to the fork header checks, sanity check TDs
// If we already have a DAO header, we can check the peer's TD against it. If
// the peer's ahead of this, it too must have a reply to the DAO check
// If we're seemingly on the same chain, disable the drop timer
}
// Filter out any explicitly requested headers, deliver the rest to the downloader
filter := len(headers) == 1
if filter {
// If it's a potential DAO fork check, validate against the rules
//if p.forkDrop != nil && pm.chainconfig.DAOForkBlock.Cmp(headers[0].Number) == 0 {
// // Disable the fork drop timer
// p.forkDrop.Stop()
// p.forkDrop = nil
//
// // Validate the header and either drop the peer or continue
// if err := misc.VerifyDAOHeaderExtraData(pm.chainconfig, headers[0]); err != nil {
// p.Log().Debug("Verified to be on the other side of the DAO fork, dropping")
// return err
// }
// p.Log().Debug("Verified to be on the same side of the DAO fork")
// return nil
//}
// Irrelevant of the fork checks, send the header to the fetcher just in case
headers = pm.fetcher.FilterHeaders(p.id, headers, time.Now())
}
if len(headers) > 0 || !filter {
err := pm.downloader.DeliverHeaders(p.id, headers)
if err != nil {
log.Debug("Failed to deliver headers", "err", err)
}
}
return nil
}
func (pm *ProtocolManager) dealGetBlockBodiesMsg(msg p2p.Msg, p *peer) error {
// Decode the retrieval message
msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
if _, err := msgStream.List(); err != nil {
return err
}
// Gather blocks until the fetch or network limits is reached
var (
hash common.Hash
bytes int
bodies []rlp.RawValue
)
for bytes < softResponseLimit && len(bodies) < downloader.MaxBlockFetch {
// Retrieve the hash of the next block
if err := msgStream.Decode(&hash); err == rlp.EOL {
break
} else if err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Retrieve the requested block body, stopping if enough was found
if data := pm.blockchain.GetBodyRLP(hash); len(data) != 0 {
bodies = append(bodies, data)
bytes += len(data)
}
}
return p.SendBlockBodiesRLP(bodies)
}
func (pm *ProtocolManager) dealBlockBodiesMsg(msg p2p.Msg, p *peer) error {
// A batch of block bodies arrived to one of our previous requests
var request blockBodiesData
if err := msg.Decode(&request); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Deliver them all to the downloader for queuing
trasactions := make([][]*types.Transaction, len(request))
uncles := make([][]*types.Header, len(request))
for i, body := range request {
trasactions[i] = body.Transactions
}
// Filter out any explicitly requested bodies, deliver the rest to the downloader
filter := len(trasactions) > 0 || len(uncles) > 0
if filter {
trasactions, uncles = pm.fetcher.FilterBodies(p.id, trasactions, uncles, time.Now())
}
if len(trasactions) > 0 || len(uncles) > 0 || !filter {
err := pm.downloader.DeliverBodies(p.id, trasactions, uncles)
if err != nil {
log.Debug("Failed to deliver bodies", "err", err)
}
}
return nil
}
func (pm *ProtocolManager) dealGetNodeDataMsg(msg p2p.Msg, p *peer) error {
// Decode the retrieval message
msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
if _, err := msgStream.List(); err != nil {
return err
}
// Gather state data until the fetch or network limits is reached
var (
hash common.Hash
bytes int
data [][]byte
)
for bytes < softResponseLimit && len(data) < downloader.MaxStateFetch {
// Retrieve the hash of the next state entry
if err := msgStream.Decode(&hash); err == rlp.EOL {
break
} else if err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Retrieve the requested state entry, stopping if enough was found
if entry, err := pm.chaindb.Get(hash.Bytes()); err == nil {
data = append(data, entry)
bytes += len(entry)
}
}
return p.SendNodeData(data)
}
func (pm *ProtocolManager) dealNodeDataMsg(msg p2p.Msg, p *peer) error {
// A batch of node state data arrived to one of our previous requests
var data [][]byte
if err := msg.Decode(&data); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Deliver all to the downloader
if err := pm.downloader.DeliverNodeData(p.id, data); err != nil {
log.Debug("Failed to deliver node state data", "err", err)
}
return nil
}
func (pm *ProtocolManager) dealGetReceiptsMsg(msg p2p.Msg, p *peer) error {
// Decode the retrieval message
msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
if _, err := msgStream.List(); err != nil {
return err
}
// Gather state data until the fetch or network limits is reached
var (
hash common.Hash
bytes int
receipts []rlp.RawValue
)
for bytes < softResponseLimit && len(receipts) < downloader.MaxReceiptFetch {
// Retrieve the hash of the next block
if err := msgStream.Decode(&hash); err == rlp.EOL {
break
} else if err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Retrieve the requested block's receipts, skipping if unknown to us
results := core.GetBlockReceipts(pm.chaindb, hash, core.GetBlockNumber(pm.chaindb, hash))
if results == nil {
if header := pm.blockchain.GetHeaderByHash(hash); header == nil || header.ReceiptHash != types.EmptyRootHash {
continue
}
}
// If known, encode and queue for response packet
if encoded, err := rlp.EncodeToBytes(results); err != nil {
log.Error("Failed to encode receipt", "err", err)
} else {
receipts = append(receipts, encoded)
bytes += len(encoded)
}
}
return p.SendReceiptsRLP(receipts)
}
func (pm *ProtocolManager) dealReceiptsMsg(msg p2p.Msg, p *peer) error {
// A batch of receipts arrived to one of our previous requests
var receipts [][]*types.Receipt
if err := msg.Decode(&receipts); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Deliver all to the downloader
if err := pm.downloader.DeliverReceipts(p.id, receipts); err != nil {
log.Debug("Failed to deliver receipts", "err", err)
}
return nil
}
func (pm *ProtocolManager) dealNewBlockHashesMsg(msg p2p.Msg, p *peer) error {
log.Info("NewBlockHashesMsg start")
var announces newBlockHashesData
if err := msg.Decode(&announces); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
// Mark the hashes as present at the remote node
for _, block := range announces {
p.MarkBlock(block.Hash)
}
// Schedule all the unknown hashes for retrieval
unknown := make(newBlockHashesData, 0, len(announces))
for _, block := range announces {
if !pm.blockchain.HasBlock(block.Hash, block.Number) {
unknown = append(unknown, block)
}
}
for _, block := range unknown {
pm.fetcher.Notify(p.id, block.Hash, block.Number, time.Now(), p.RequestOneHeader, p.RequestBodies)
}
return nil
}
func (pm *ProtocolManager) dealNewBlockMsg(msg p2p.Msg, p *peer) error {
// Retrieve and decode the propagated block
var request newBlockData
if err := msg.Decode(&request); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
request.Block.ReceivedAt = msg.ReceivedAt
request.Block.ReceivedFrom = p
block := request.Block
rlpEncodeSigns := request.RlpEncodeSigns
block.RlpEncodeSigns = rlpEncodeSigns
currentBlock := pm.blockchain.CurrentBlock()
td := pm.blockchain.GetTd(currentBlock.Hash(), currentBlock.NumberU64())
log.Info("New block msg receive", "blockNumber", block.NumberU64(), "localNumber", currentBlock.NumberU64(), "localTd", td, "rlpSignsLen", len(rlpEncodeSigns))
if block.NumberU64() <= currentBlock.NumberU64() {
log.Error("New block msg end|block is exist", "currentBlockNumber", currentBlock.NumberU64())
return nil
}
// lost block
if block.NumberU64() > currentBlock.NumberU64()+1 {
go pm.synchroniseWithHigherPeers(p, block)
return nil
}
err := pm.engine.VerifyBlockGenerate(pm.blockchain, block, pm.taskManager.GetCurrentShuffleRound(), blockInterval)
if err != nil {
log.Error("New block Msg|verify block fail", "blockNumber", block.NumberU64(), "err", err)
pm.shuffleIfVerify(block)
err = pm.engine.VerifyBlockGenerate(pm.blockchain, block, pm.taskManager.GetCurrentShuffleRound(), blockInterval)
if err != nil {
log.Error("New block Msg|verify block fail again", "blockNumber", block.NumberU64(), "err", err)
return nil
}
}
// agent node
lockBlock := pm.lockBlockManager.getPendingBlock()
if lockBlock != nil && lockBlock.block.NumberU64() == block.NumberU64() {
pm.lockBlockManager.unlock()
}
// Mark the peer as owning the block and schedule it for import
p.MarkBlock(request.Block.Hash())
pm.fetcher.Enqueue(p.id, request.Block)
var (
trueHead = block.ParentHash()
// TODO already remove difficult,add 1
trueTD = new(big.Int).Sub(request.TD, types.BlockDifficult)
)
if _, td := p.Head(); trueTD.Cmp(td) > 0 {
p.SetHead(trueHead, trueTD)
currentBlock := currentBlock
if trueTD.Cmp(pm.blockchain.GetTd(currentBlock.Hash(), currentBlock.NumberU64())) > 0 {
go pm.synchronise(p)
}
}
go pm.BroadcastBlock(block, true)
return nil
}
// only execute when unlock,if verify success,add block to memory.otherwise,broadcast oppose votes
func (pm *ProtocolManager) dealPreBlockMsg(msg p2p.Msg, p *peer) error {
var request preBlockData
if err := msg.Decode(&request); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
block := request.Block
log.Info("PreBlockMsg receive", "blockNumber", block.NumberU64(), "blockHash", block.Hash().Hex(), "coinbase", block.Coinbase().Hex())
// lost block
currentBlock := pm.blockchain.CurrentBlock()
if block.NumberU64() <= currentBlock.NumberU64() {
log.Error("PreBlockMsg end|block is exist", "currentBlockNumber", currentBlock.NumberU64())
return nil
}
if block.NumberU64() > currentBlock.NumberU64()+1 {
log.Info("PreBlockMsg end|because of lost block begin to sync", "currentBlockNumber", currentBlock.NumberU64(), "receiveBlockNumber", block.NumberU64())
go pm.synchroniseWithHigherPeers(p, block)
return nil
}
if block.ParentHash() != currentBlock.Hash() {
// currentBlock rollback
// pm.blockchain.RollbackBFT(currentBlock)
// go pm.synchronise(p)
// return nil
log.Error("dealPreBlockMsg block hash is not same", "blockNumber", currentBlock.NumberU64(), "localBlockHash", currentBlock.Hash().Hex(), "remoteBlockHash", block.ParentHash().Hex())
}
verifyBlock := true
err := pm.engine.VerifyHeaderAndSign(pm.blockchain, block, pm.taskManager.GetCurrentShuffleRound(), blockInterval)
if err != nil {
log.Error("PreBlockMsg verify block fail", "blockNumber", block.NumberU64(), "err", err)
verifyBlock = false
}
p.MarkPreBlock(block.Hash())
if verifyBlock { // verify success
go pm.PreBroadcastBlock(block)
pm.lockBlockManager.unlock()
err = pm.lockBlockManager.addPendingBlock(block)
if err != nil {
log.Error("PreBlockMsg|add pendingBlock fail", "blockNumber", block.NumberU64(), "err", err)
return nil
}
go pm.addSignToPendingBlock(block, approveVote)
} else {
log.Info("PreBlockMsg|push oppose vote start", "blockHash", block.Hash().Hex())
go pm.addSignToPendingBlock(block, opposeVote)
}
// log.Info("PreBlockMsg|receive pre new block", "blockNumber", block.NumberU64(), block.NumberU64(), "coinbase", block.Coinbase().Hex(), "localCommit", commitIndex, "verifySuccess", verifyBlock)
return nil
}
func (pm *ProtocolManager) dealSignaturesBlockMsg(msg p2p.Msg, p *peer) error {
var signBlockMsg signaturesBlockMsg
if err := msg.Decode(&signBlockMsg); err != nil {
log.Error("dealSignaturesBlockMsg|err", "err", err)
return errResp(ErrDecode, "%v: %v", msg, err)
}
blockHash := common.BytesToHash(signBlockMsg.BlockHash)
blockHashHex := common.BytesToHash(signBlockMsg.BlockHash).Hex()
log.Debug("SignaturesBlockMsg receive", "blockHash", blockHashHex, "signLen", len(signBlockMsg.Signatures))
if p.HasReceiveSignatures(signBlockMsg.Signatures, signBlockMsg.BlockHash) {
log.Debug("SignaturesBlockMsg already receive", "blockHash", blockHashHex)
return nil
}
p.MarkBlockSignatures(signBlockMsg.Signatures, signBlockMsg.BlockHash)
currentShuffleRound := pm.taskManager.GetCurrentShuffleRound()
err := pm.lockBlockManager.checkBroadcastSignatures(blockHash, signBlockMsg.Signatures, currentShuffleRound)
if err != nil {
log.Error("dealSignaturesBlockMsg|receive error sign msg", "blockHash", blockHashHex, "peerId", p.id, "err", err)
return nil
}
go pm.BroadcastBlockSignatures(signBlockMsg.BlockHash, signBlockMsg.Signatures)
for _, signVote := range signBlockMsg.Signatures {
go pm.lockBlockManager.addSignToPendingBlock(blockHash, signVote.Sign, signVote.VoteAction, currentShuffleRound)
}
return nil
}
func (pm *ProtocolManager) dealTxMsg(msg p2p.Msg, p *peer) error {
// Transactions arrived, make sure we have a valid and fresh chain to handle them
if atomic.LoadUint32(&pm.acceptTxs) == 0 {
return nil
}
// Transactions can be processed, parse all of them and deliver to the pool
var txs []*types.Transaction
if err := msg.Decode(&txs); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
for i, tx := range txs {
// Validate and mark the remote transaction
if tx == nil {
return errResp(ErrDecode, "transaction %d is nil", i)
}
p.MarkTransaction(tx.Hash())
}
pm.txpool.AddRemotes(txs)
return nil
}
// generate correct shuffleList when verify fail,only try once
func (pm *ProtocolManager) shuffleIfVerify(block *types.Block) {
pm.taskManager.ShuffleWhenVerifyFail(block.Number().Int64(), block.Time().Int64(), block.Header().ShuffleBlockNumber)
}
func (pm *ProtocolManager) signBlockWithLocalDelegates(block *types.Block) [][]byte {
localExistdelegates := pm.taskManager.GetLocalCurrentRound()
signs := make([][]byte, 0)
for _, address := range localExistdelegates {
address = strings.ToLower(address)
if _, ok := pm.delegateWallets[address]; !ok {
continue
}
privateKey := pm.delegateWallets[address]
sign, err := crypto.Sign(block.Hash().Bytes()[:32], privateKey)
if err != nil {
continue
}
signs = append(signs, sign)
}
return signs
}