mirror of
https://github.com/QuilibriumNetwork/ceremonyclient.git
synced 2026-02-21 18:37:26 +08:00
674 lines
17 KiB
Go
674 lines
17 KiB
Go
package data
|
|
|
|
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/execution/intrinsics/token/application"
|
|
"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
|
|
)
|
|
|
|
func (e *DataClockConsensusEngine) runMessageHandler() {
|
|
for {
|
|
select {
|
|
case message := <-e.messageProcessorCh:
|
|
e.logger.Debug("handling message")
|
|
msg := &protobufs.Message{}
|
|
|
|
if err := proto.Unmarshal(message.Data, msg); err != nil {
|
|
e.logger.Debug("bad message")
|
|
continue
|
|
}
|
|
|
|
if e.frameProverTries[0].Contains(e.provingKeyAddress) &&
|
|
e.syncingStatus == SyncStatusNotSyncing {
|
|
for name := range e.executionEngines {
|
|
name := name
|
|
go func() error {
|
|
messages, err := e.executionEngines[name].ProcessMessage(
|
|
application.TOKEN_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
|
|
}
|
|
|
|
e.logger.Debug(appMsg.TypeUrl)
|
|
|
|
switch appMsg.TypeUrl {
|
|
case protobufs.TokenRequestType:
|
|
t := &protobufs.TokenRequest{}
|
|
err := proto.Unmarshal(appMsg.Value, t)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
|
|
if err := e.handleTokenRequest(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
|
|
}
|
|
e.logger.Debug("message type", zap.String("type", any.TypeUrl))
|
|
|
|
go func() {
|
|
switch any.TypeUrl {
|
|
case protobufs.FrameRebroadcastType:
|
|
if err := e.handleRebroadcast(
|
|
message.From,
|
|
msg.Address,
|
|
any,
|
|
); err != nil {
|
|
return
|
|
}
|
|
case protobufs.ClockFrameType:
|
|
if err := e.handleClockFrameData(
|
|
message.From,
|
|
msg.Address,
|
|
any,
|
|
false,
|
|
); err != nil {
|
|
return
|
|
}
|
|
case protobufs.DataPeerListAnnounceType:
|
|
if err := e.handleDataPeerListAnnounce(
|
|
message.From,
|
|
msg.Address,
|
|
any,
|
|
); err != nil {
|
|
return
|
|
}
|
|
// case protobufs.AnnounceProverJoinType:
|
|
// if err := e.handleDataAnnounceProverJoin(
|
|
// message.From,
|
|
// msg.Address,
|
|
// any,
|
|
// ); err != nil {
|
|
// return
|
|
// }
|
|
// case protobufs.AnnounceProverLeaveType:
|
|
// if !e.IsInProverTrie(peer.peerId) {
|
|
// return
|
|
// }
|
|
// if err := e.handleDataAnnounceProverLeave(
|
|
// message.From,
|
|
// msg.Address,
|
|
// any,
|
|
// ); err != nil {
|
|
// return
|
|
// }
|
|
case protobufs.AnnounceProverPauseType:
|
|
// stop spamming
|
|
e.pubSub.AddPeerScore(message.From, -1000)
|
|
// if err := e.handleDataAnnounceProverPause(
|
|
// message.From,
|
|
// msg.Address,
|
|
// any,
|
|
// ); err != nil {
|
|
// return
|
|
// }
|
|
case protobufs.AnnounceProverResumeType:
|
|
// stop spamming
|
|
e.pubSub.AddPeerScore(message.From, -1000)
|
|
// if err := e.handleDataAnnounceProverResume(
|
|
// message.From,
|
|
// msg.Address,
|
|
// any,
|
|
// ); err != nil {
|
|
// return
|
|
// }
|
|
}
|
|
}()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (e *DataClockConsensusEngine) handleRebroadcast(
|
|
peerID []byte,
|
|
address []byte,
|
|
any *anypb.Any,
|
|
) error {
|
|
if bytes.Equal(peerID, e.pubSub.GetPeerID()) {
|
|
return nil
|
|
}
|
|
|
|
frames := &protobufs.FrameRebroadcast{}
|
|
if err := any.UnmarshalTo(frames); err != nil {
|
|
return errors.Wrap(err, "handle clock frame data")
|
|
}
|
|
|
|
head, err := e.dataTimeReel.Head()
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
|
|
e.logger.Debug(
|
|
"received rebroadcast",
|
|
zap.Uint64("from", frames.From),
|
|
zap.Uint64("to", frames.To),
|
|
)
|
|
if head.FrameNumber+1 < frames.From {
|
|
return nil
|
|
}
|
|
|
|
if head.FrameNumber > frames.To {
|
|
return nil
|
|
}
|
|
|
|
for _, frame := range frames.ClockFrames {
|
|
if head.FrameNumber > frame.FrameNumber {
|
|
continue
|
|
}
|
|
|
|
e.logger.Info("receiving synchronization data")
|
|
|
|
if err := e.handleClockFrame(peerID, address, frame); err != nil {
|
|
return errors.Wrap(err, "handle rebroadcast")
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (e *DataClockConsensusEngine) handleClockFrame(
|
|
peerID []byte,
|
|
address []byte,
|
|
frame *protobufs.ClockFrame,
|
|
) error {
|
|
if frame == nil {
|
|
return errors.Wrap(errors.New("frame is nil"), "handle clock frame")
|
|
}
|
|
|
|
addr, err := poseidon.HashBytes(
|
|
frame.GetPublicKeySignatureEd448().PublicKey.KeyValue,
|
|
)
|
|
if err != nil {
|
|
return errors.Wrap(err, "handle clock frame data")
|
|
}
|
|
|
|
trie := e.GetFrameProverTries()[0]
|
|
if !trie.Contains(addr.Bytes()) {
|
|
e.logger.Debug(
|
|
"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.Debug(
|
|
"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.Debug("could not verify clock frame", zap.Error(err))
|
|
return errors.Wrap(err, "handle clock frame data")
|
|
}
|
|
|
|
e.logger.Debug(
|
|
"clock frame was valid",
|
|
zap.Binary("address", address),
|
|
zap.Binary("filter", frame.Filter),
|
|
zap.Uint64("frame_number", frame.FrameNumber),
|
|
)
|
|
|
|
head, err := e.dataTimeReel.Head()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
if frame.FrameNumber > head.FrameNumber {
|
|
e.dataTimeReel.Insert(frame, false)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (e *DataClockConsensusEngine) handleClockFrameData(
|
|
peerID []byte,
|
|
address []byte,
|
|
any *anypb.Any,
|
|
isSync bool,
|
|
) error {
|
|
if bytes.Equal(peerID, e.pubSub.GetPeerID()) {
|
|
return nil
|
|
}
|
|
|
|
frame := &protobufs.ClockFrame{}
|
|
if err := any.UnmarshalTo(frame); err != nil {
|
|
return errors.Wrap(err, "handle clock frame data")
|
|
}
|
|
|
|
return e.handleClockFrame(peerID, address, frame)
|
|
}
|
|
|
|
func (e *DataClockConsensusEngine) handleDataPeerListAnnounce(
|
|
peerID []byte,
|
|
address []byte,
|
|
any *anypb.Any,
|
|
) error {
|
|
announce := &protobufs.DataPeerListAnnounce{}
|
|
if err := any.UnmarshalTo(announce); err != nil {
|
|
return errors.Wrap(err, "handle data 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, -1000000)
|
|
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 *DataClockConsensusEngine) getAddressFromSignature(
|
|
sig *protobufs.Ed448Signature,
|
|
) ([]byte, error) {
|
|
if sig.PublicKey == nil || sig.PublicKey.KeyValue == nil {
|
|
return nil, errors.New("invalid data")
|
|
}
|
|
addrBI, err := poseidon.HashBytes(sig.PublicKey.KeyValue)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "get address from signature")
|
|
}
|
|
|
|
return addrBI.FillBytes(make([]byte, 32)), nil
|
|
}
|
|
|
|
// func (e *DataClockConsensusEngine) handleDataAnnounceProverJoin(
|
|
// peerID []byte,
|
|
// address []byte,
|
|
// any *anypb.Any,
|
|
// ) error {
|
|
// if e.GetFrameProverTries()[0].Contains(e.provingKeyAddress) {
|
|
// announce := &protobufs.AnnounceProverJoin{}
|
|
// if err := any.UnmarshalTo(announce); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover join")
|
|
// }
|
|
|
|
// if announce.PublicKeySignatureEd448 == nil || announce.Filter == nil {
|
|
// return errors.Wrap(
|
|
// errors.New("invalid data"),
|
|
// "handle data announce prover join",
|
|
// )
|
|
// }
|
|
|
|
// address, err := e.getAddressFromSignature(announce.PublicKeySignatureEd448)
|
|
// if err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover join")
|
|
// }
|
|
|
|
// msg := []byte("join")
|
|
// msg = binary.BigEndian.AppendUint64(msg, announce.FrameNumber)
|
|
// msg = append(msg, announce.Filter...)
|
|
// if err := announce.GetPublicKeySignatureEd448().Verify(msg); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover join")
|
|
// }
|
|
|
|
// e.proverTrieRequestsMx.Lock()
|
|
// if len(announce.Filter) != len(e.filter) {
|
|
// return errors.Wrap(
|
|
// errors.New("filter width mismatch"),
|
|
// "handle data announce prover join",
|
|
// )
|
|
// }
|
|
|
|
// e.proverTrieJoinRequests[string(address)] = string(announce.Filter)
|
|
// e.proverTrieRequestsMx.Unlock()
|
|
// }
|
|
// return nil
|
|
// }
|
|
|
|
// func (e *DataClockConsensusEngine) handleDataAnnounceProverLeave(
|
|
// peerID []byte,
|
|
// address []byte,
|
|
// any *anypb.Any,
|
|
// ) error {
|
|
// if e.GetFrameProverTries()[0].Contains(e.provingKeyAddress) {
|
|
// announce := &protobufs.AnnounceProverLeave{}
|
|
// if err := any.UnmarshalTo(announce); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover leave")
|
|
// }
|
|
|
|
// if announce.PublicKeySignatureEd448 == nil || announce.Filter == nil {
|
|
// return errors.Wrap(
|
|
// errors.New("invalid data"),
|
|
// "handle data announce prover leave",
|
|
// )
|
|
// }
|
|
|
|
// e.proverTrieRequestsMx.Lock()
|
|
|
|
// if len(announce.Filter) != len(e.filter) {
|
|
// return errors.Wrap(
|
|
// errors.New("filter width mismatch"),
|
|
// "handle data announce prover leave",
|
|
// )
|
|
// }
|
|
|
|
// msg := []byte("leave")
|
|
// msg = binary.BigEndian.AppendUint64(msg, announce.FrameNumber)
|
|
// msg = append(msg, announce.Filter...)
|
|
// if err := announce.GetPublicKeySignatureEd448().Verify(msg); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover leave")
|
|
// }
|
|
|
|
// address, err := e.getAddressFromSignature(announce.PublicKeySignatureEd448)
|
|
// if err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover leave")
|
|
// }
|
|
|
|
// e.proverTrieLeaveRequests[string(address)] = string(announce.Filter)
|
|
// e.proverTrieRequestsMx.Unlock()
|
|
// }
|
|
// return nil
|
|
// }
|
|
|
|
// func (e *DataClockConsensusEngine) handleDataAnnounceProverPause(
|
|
// peerID []byte,
|
|
// address []byte,
|
|
// any *anypb.Any,
|
|
// ) error {
|
|
// if e.GetFrameProverTries()[0].Contains(e.provingKeyAddress) {
|
|
// announce := &protobufs.AnnounceProverPause{}
|
|
// if err := any.UnmarshalTo(announce); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover pause")
|
|
// }
|
|
|
|
// if announce.PublicKeySignatureEd448 == nil || announce.Filter == nil {
|
|
// return errors.Wrap(
|
|
// errors.New("invalid data"),
|
|
// "handle data announce prover leave",
|
|
// )
|
|
// }
|
|
|
|
// e.proverTrieRequestsMx.Lock()
|
|
// if len(announce.Filter) != len(e.filter) {
|
|
// return errors.Wrap(
|
|
// errors.New("filter width mismatch"),
|
|
// "handle data announce prover pause",
|
|
// )
|
|
// }
|
|
|
|
// msg := []byte("pause")
|
|
// msg = binary.BigEndian.AppendUint64(msg, announce.FrameNumber)
|
|
// msg = append(msg, announce.Filter...)
|
|
// if err := announce.GetPublicKeySignatureEd448().Verify(msg); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover pause")
|
|
// }
|
|
|
|
// address, err := e.getAddressFromSignature(announce.PublicKeySignatureEd448)
|
|
// if err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover pause")
|
|
// }
|
|
|
|
// e.proverTriePauseRequests[string(address)] = string(announce.Filter)
|
|
// e.proverTrieRequestsMx.Unlock()
|
|
// }
|
|
// return nil
|
|
// }
|
|
|
|
// func (e *DataClockConsensusEngine) handleDataAnnounceProverResume(
|
|
// peerID []byte,
|
|
// address []byte,
|
|
// any *anypb.Any,
|
|
// ) error {
|
|
// if e.GetFrameProverTries()[0].Contains(e.provingKeyAddress) {
|
|
// announce := &protobufs.AnnounceProverResume{}
|
|
// if err := any.UnmarshalTo(announce); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover resume")
|
|
// }
|
|
|
|
// if announce.PublicKeySignatureEd448 == nil || announce.Filter == nil {
|
|
// return errors.Wrap(
|
|
// errors.New("invalid data"),
|
|
// "handle data announce prover resume",
|
|
// )
|
|
// }
|
|
|
|
// e.proverTrieRequestsMx.Lock()
|
|
// if len(announce.Filter) != len(e.filter) {
|
|
// return errors.Wrap(
|
|
// errors.New("filter width mismatch"),
|
|
// "handle data announce prover resume",
|
|
// )
|
|
// }
|
|
|
|
// address, err := e.getAddressFromSignature(announce.PublicKeySignatureEd448)
|
|
// if err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover resume")
|
|
// }
|
|
|
|
// msg := []byte("resume")
|
|
// msg = binary.BigEndian.AppendUint64(msg, announce.FrameNumber)
|
|
// msg = append(msg, announce.Filter...)
|
|
// if err := announce.GetPublicKeySignatureEd448().Verify(msg); err != nil {
|
|
// return errors.Wrap(err, "handle data announce prover resume")
|
|
// }
|
|
|
|
// e.proverTrieResumeRequests[string(address)] = string(announce.Filter)
|
|
// e.proverTrieRequestsMx.Unlock()
|
|
// }
|
|
// return nil
|
|
// }
|
|
|
|
func (e *DataClockConsensusEngine) handleTokenRequest(
|
|
transition *protobufs.TokenRequest,
|
|
) error {
|
|
if e.GetFrameProverTries()[0].Contains(e.provingKeyAddress) {
|
|
e.stagedTransactionsMx.Lock()
|
|
if e.stagedTransactions == nil {
|
|
e.stagedTransactions = &protobufs.TokenRequests{}
|
|
}
|
|
|
|
found := false
|
|
for _, ti := range e.stagedTransactions.Requests {
|
|
switch t := ti.Request.(type) {
|
|
case *protobufs.TokenRequest_Transfer:
|
|
switch r := transition.Request.(type) {
|
|
case *protobufs.TokenRequest_Transfer:
|
|
if bytes.Equal(r.Transfer.OfCoin.Address, t.Transfer.OfCoin.Address) {
|
|
found = true
|
|
}
|
|
}
|
|
case *protobufs.TokenRequest_Split:
|
|
switch r := transition.Request.(type) {
|
|
case *protobufs.TokenRequest_Split:
|
|
if bytes.Equal(r.Split.OfCoin.Address, r.Split.OfCoin.Address) {
|
|
found = true
|
|
}
|
|
}
|
|
case *protobufs.TokenRequest_Merge:
|
|
switch r := transition.Request.(type) {
|
|
case *protobufs.TokenRequest_Merge:
|
|
checkmerge:
|
|
for i := range t.Merge.Coins {
|
|
for j := range r.Merge.Coins {
|
|
if bytes.Equal(t.Merge.Coins[i].Address, r.Merge.Coins[j].Address) {
|
|
found = true
|
|
break checkmerge
|
|
}
|
|
}
|
|
}
|
|
}
|
|
case *protobufs.TokenRequest_Mint:
|
|
switch r := transition.Request.(type) {
|
|
case *protobufs.TokenRequest_Mint:
|
|
checkmint:
|
|
for i := range t.Mint.Proofs {
|
|
if len(r.Mint.Proofs) < 2 {
|
|
for j := range r.Mint.Proofs {
|
|
if bytes.Equal(t.Mint.Proofs[i], r.Mint.Proofs[j]) {
|
|
found = true
|
|
break checkmint
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
e.stagedTransactions.Requests = append(
|
|
e.stagedTransactions.Requests,
|
|
transition,
|
|
)
|
|
}
|
|
e.stagedTransactionsMx.Unlock()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func nearestApplicablePowerOfTwo(number uint64) uint64 {
|
|
power := uint64(128)
|
|
if number > 2048 {
|
|
power = 65536
|
|
} else if number > 1024 {
|
|
power = 2048
|
|
} else if number > 128 {
|
|
power = 1024
|
|
}
|
|
return power
|
|
}
|