ceremonyclient/node/consensus/ceremony/message_handler.go

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package ceremony
import (
"bytes"
"encoding/binary"
"time"
"github.com/iden3/go-iden3-crypto/poseidon"
pcrypto "github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/pkg/errors"
"go.uber.org/zap"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"source.quilibrium.com/quilibrium/monorepo/node/config"
"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
)
func (e *CeremonyDataClockConsensusEngine) runMessageHandler() {
for {
select {
case message := <-e.messageProcessorCh:
e.logger.Debug("handling message")
msg := &protobufs.Message{}
if err := proto.Unmarshal(message.Data, msg); err != nil {
continue
}
e.peerMapMx.RLock()
peer, ok := e.peerMap[string(message.From)]
e.peerMapMx.RUnlock()
if ok && bytes.Compare(peer.version, config.GetMinimumVersion()) >= 0 &&
bytes.Equal(
e.frameProverTrie.FindNearest(e.provingKeyAddress).External.Key,
e.provingKeyAddress,
) && e.syncingStatus == SyncStatusNotSyncing {
for name := range e.executionEngines {
name := name
go func() error {
messages, err := e.executionEngines[name].ProcessMessage(
msg.Address,
msg,
)
if err != nil {
e.logger.Debug(
"could not process message for engine",
zap.Error(err),
zap.String("engine_name", name),
)
return nil
}
for _, appMessage := range messages {
appMsg := &anypb.Any{}
err := proto.Unmarshal(appMessage.Payload, appMsg)
if err != nil {
e.logger.Error(
"could not unmarshal app message",
zap.Error(err),
zap.String("engine_name", name),
)
continue
}
switch appMsg.TypeUrl {
case protobufs.CeremonyLobbyStateTransitionType:
t := &protobufs.CeremonyLobbyStateTransition{}
err := proto.Unmarshal(appMsg.Value, t)
if err != nil {
continue
}
if err := e.handleCeremonyLobbyStateTransition(t); err != nil {
continue
}
}
}
return nil
}()
}
}
any := &anypb.Any{}
if err := proto.Unmarshal(msg.Payload, any); err != nil {
e.logger.Error("error while unmarshaling", zap.Error(err))
continue
}
go func() {
switch any.TypeUrl {
case protobufs.ClockFrameType:
if !ok || bytes.Compare(
peer.version,
config.GetMinimumVersion(),
) < 0 {
e.logger.Debug("received frame from unknown or outdated peer")
return
}
if err := e.handleClockFrameData(
message.From,
msg.Address,
any,
false,
); err != nil {
return
}
case protobufs.CeremonyPeerListAnnounceType:
if err := e.handleCeremonyPeerListAnnounce(
message.From,
msg.Address,
any,
); err != nil {
return
}
}
}()
}
}
}
func (e *CeremonyDataClockConsensusEngine) handleCeremonyPeerListAnnounce(
peerID []byte,
address []byte,
any *anypb.Any,
) error {
announce := &protobufs.CeremonyPeerListAnnounce{}
if err := any.UnmarshalTo(announce); err != nil {
return errors.Wrap(err, "handle ceremony peer list announce")
}
for _, p := range announce.PeerList {
if bytes.Equal(p.PeerId, e.pubSub.GetPeerID()) {
continue
}
if !bytes.Equal(p.PeerId, peerID) {
continue
}
if p.PublicKey == nil || p.Signature == nil || p.Version == nil {
continue
}
if p.PublicKey != nil && p.Signature != nil && p.Version != nil {
key, err := pcrypto.UnmarshalEd448PublicKey(p.PublicKey)
if err != nil {
e.logger.Warn(
"peer announcement contained invalid pubkey",
zap.Binary("public_key", p.PublicKey),
)
continue
}
if !(peer.ID(p.PeerId)).MatchesPublicKey(key) {
e.logger.Warn(
"peer announcement peer id does not match pubkey",
zap.Binary("peer_id", p.PeerId),
zap.Binary("public_key", p.PublicKey),
)
continue
}
msg := binary.BigEndian.AppendUint64([]byte{}, p.MaxFrame)
msg = append(msg, p.Version...)
msg = binary.BigEndian.AppendUint64(msg, uint64(p.Timestamp))
b, err := key.Verify(msg, p.Signature)
if err != nil || !b {
e.logger.Warn(
"peer provided invalid signature",
zap.Binary("msg", msg),
zap.Binary("public_key", p.PublicKey),
zap.Binary("signature", p.Signature),
)
continue
}
if bytes.Compare(p.Version, config.GetMinimumVersion()) < 0 &&
p.Timestamp > config.GetMinimumVersionCutoff().UnixMilli() {
e.logger.Debug(
"peer provided outdated version, penalizing app score",
zap.Binary("peer_id", p.PeerId),
)
e.pubSub.SetPeerScore(p.PeerId, -10000)
continue
}
}
e.peerMapMx.RLock()
if _, ok := e.uncooperativePeersMap[string(p.PeerId)]; ok {
e.peerMapMx.RUnlock()
continue
}
e.peerMapMx.RUnlock()
multiaddr := e.pubSub.GetMultiaddrOfPeer(p.PeerId)
e.pubSub.SetPeerScore(p.PeerId, 10)
e.peerMapMx.RLock()
existing, ok := e.peerMap[string(p.PeerId)]
e.peerMapMx.RUnlock()
if ok {
if existing.signature != nil && p.Signature == nil {
continue
}
if existing.publicKey != nil && p.PublicKey == nil {
continue
}
if existing.version != nil && p.Version == nil {
continue
}
if existing.timestamp > p.Timestamp {
continue
}
}
e.peerMapMx.Lock()
e.peerMap[string(p.PeerId)] = &peerInfo{
peerId: p.PeerId,
multiaddr: multiaddr,
maxFrame: p.MaxFrame,
direct: bytes.Equal(p.PeerId, peerID),
lastSeen: time.Now().Unix(),
timestamp: p.Timestamp,
version: p.Version,
signature: p.Signature,
publicKey: p.PublicKey,
totalDistance: p.TotalDistance,
}
e.peerMapMx.Unlock()
}
return nil
}
func (e *CeremonyDataClockConsensusEngine) handleCeremonyLobbyStateTransition(
transition *protobufs.CeremonyLobbyStateTransition,
) error {
if len(transition.TransitionInputs) != len(transition.TypeUrls) {
return errors.Wrap(
errors.New("invalid state transition"),
"handle ceremony lobby state transition",
)
}
e.stagedLobbyStateTransitionsMx.Lock()
if e.stagedLobbyStateTransitions == nil {
e.stagedLobbyStateTransitions = &protobufs.CeremonyLobbyStateTransition{}
}
found := false
for _, ti := range e.stagedLobbyStateTransitions.TransitionInputs {
for _, nti := range transition.TransitionInputs {
if bytes.Equal(ti, nti) {
found = true
}
}
}
if !found {
for i := range transition.TransitionInputs {
e.stagedLobbyStateTransitions.TypeUrls = append(
e.stagedLobbyStateTransitions.TypeUrls,
transition.TypeUrls[i],
)
e.stagedLobbyStateTransitions.TransitionInputs = append(
e.stagedLobbyStateTransitions.TransitionInputs,
transition.TransitionInputs[i],
)
}
}
e.stagedLobbyStateTransitionsMx.Unlock()
return nil
}
func (e *CeremonyDataClockConsensusEngine) handleClockFrameData(
peerID []byte,
address []byte,
any *anypb.Any,
isSync bool,
) error {
frame := &protobufs.ClockFrame{}
if err := any.UnmarshalTo(frame); err != nil {
return errors.Wrap(err, "handle clock frame data")
}
if e.latestFrameReceived > frame.FrameNumber {
return nil
}
addr, err := poseidon.HashBytes(
frame.GetPublicKeySignatureEd448().PublicKey.KeyValue,
)
if err != nil {
return errors.Wrap(err, "handle clock frame data")
}
prover := e.frameProverTrie.FindNearest(addr.Bytes())
if !bytes.Equal(prover.External.Key, addr.Bytes()) {
e.logger.Info(
"prover not in trie at frame, address may be in fork",
zap.Binary("address", address),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
)
return nil
}
e.logger.Info(
"got clock frame",
zap.Binary("address", address),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
zap.Int("proof_count", len(frame.AggregateProofs)),
)
if err := e.frameProver.VerifyDataClockFrame(frame); err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame data")
}
if err := e.inclusionProver.VerifyFrame(frame); err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame data")
}
e.logger.Info(
"clock frame was valid",
zap.Binary("address", address),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
)
if e.latestFrameReceived < frame.FrameNumber {
e.latestFrameReceived = frame.FrameNumber
go func() {
select {
case e.frameChan <- frame:
default:
}
}()
}
e.dataTimeReel.Insert(frame, e.latestFrameReceived < frame.FrameNumber)
return nil
}