feat: introduce messages segmentation
This commit is contained in:
Patryk Osmaczko
osmaczko
parent
fa44e03ac2
commit
6bb806caad
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@ -1,13 +1,16 @@
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package common
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import (
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"bytes"
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"context"
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"crypto/ecdsa"
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"database/sql"
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"math"
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"sync"
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"time"
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"github.com/golang/protobuf/proto"
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"github.com/jinzhu/copier"
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"github.com/pkg/errors"
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datasyncnode "github.com/vacp2p/mvds/node"
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datasyncproto "github.com/vacp2p/mvds/protobuf"
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@ -756,6 +759,12 @@ func (s *MessageSender) HandleMessages(wakuMessage *types.Message) ([]*v1protoco
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return nil, nil, s.persistence.SaveHashRatchetMessage(info.GroupID, info.KeyID, wakuMessage)
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}
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// The current message segment has been successfully retrieved.
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// However, the collection of segments is not yet complete.
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if err == ErrMessageSegmentsIncomplete {
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return nil, nil, nil
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}
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return nil, nil, err
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}
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statusMessages = append(statusMessages, response.Messages()...)
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@ -820,6 +829,20 @@ func (s *MessageSender) handleMessage(wakuMessage *types.Message) (*handleMessag
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return nil, err
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}
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err = s.handleSegmentationLayer(response.Message)
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if err != nil {
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hlogger.Debug("failed to handle segmentation layer message", zap.Error(err))
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// Segments not completed yet, stop processing
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if err == ErrMessageSegmentsIncomplete {
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return nil, err
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}
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// Segments already completed, stop processing
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if err == ErrMessageSegmentsAlreadyCompleted {
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return nil, err
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}
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}
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err = s.handleEncryptionLayer(context.Background(), response.Message)
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if err != nil {
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hlogger.Debug("failed to handle an encryption message", zap.Error(err))
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@ -1178,3 +1201,126 @@ func (s *MessageSender) GetCurrentKeyForGroup(groupID []byte) (*encryption.HashR
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func (s *MessageSender) GetKeysForGroup(groupID []byte) ([]*encryption.HashRatchetKeyCompatibility, error) {
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return s.protocol.GetKeysForGroup(groupID)
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}
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// Segments message into smaller chunks if the size exceeds the maximum allowed
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func segmentMessage(newMessage *types.NewMessage, maxSegmentSize int) ([]*types.NewMessage, error) {
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if len(newMessage.Payload) <= maxSegmentSize {
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return []*types.NewMessage{newMessage}, nil
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}
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createSegment := func(chunkPayload []byte) (*types.NewMessage, error) {
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copy := &types.NewMessage{}
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err := copier.Copy(copy, newMessage)
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if err != nil {
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return nil, err
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}
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copy.Payload = chunkPayload
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copy.PowTarget = calculatePoW(chunkPayload)
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return copy, nil
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}
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entireMessageHash := crypto.Keccak256(newMessage.Payload)
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payloadSize := len(newMessage.Payload)
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segmentsCount := int(math.Ceil(float64(payloadSize) / float64(maxSegmentSize)))
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var segmentMessages []*types.NewMessage
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for start, index := 0, 0; start < payloadSize; start += maxSegmentSize {
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end := start + maxSegmentSize
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if end > payloadSize {
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end = payloadSize
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}
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chunk := newMessage.Payload[start:end]
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segmentMessageProto := &protobuf.SegmentMessage{
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EntireMessageHash: entireMessageHash,
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Index: uint32(index),
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SegmentsCount: uint32(segmentsCount),
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Payload: chunk,
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}
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chunkPayload, err := proto.Marshal(segmentMessageProto)
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if err != nil {
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return nil, err
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}
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segmentMessage, err := createSegment(chunkPayload)
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if err != nil {
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return nil, err
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}
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segmentMessages = append(segmentMessages, segmentMessage)
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index++
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}
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return segmentMessages, nil
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}
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var ErrMessageSegmentsIncomplete = errors.New("message segments incomplete")
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var ErrMessageSegmentsAlreadyCompleted = errors.New("message segments already completed")
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var ErrMessageSegmentsInvalidCount = errors.New("invalid segments count")
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var ErrMessageSegmentsHashMismatch = errors.New("hash of entire payload does not match")
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func (s *MessageSender) handleSegmentationLayer(message *v1protocol.StatusMessage) error {
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logger := s.logger.With(zap.String("site", "handleSegmentationLayer"))
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hlogger := logger.With(zap.ByteString("hash", message.TransportLayer.Hash))
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var segmentMessage protobuf.SegmentMessage
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err := proto.Unmarshal(message.TransportLayer.Payload, &segmentMessage)
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if err != nil {
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return errors.Wrap(err, "failed to unmarshal SegmentMessage")
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}
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hlogger.Debug("handling message segment", zap.ByteString("EntireMessageHash", segmentMessage.EntireMessageHash),
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zap.Uint32("Index", segmentMessage.Index), zap.Uint32("SegmentsCount", segmentMessage.SegmentsCount))
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alreadyCompleted, err := s.persistence.IsMessageAlreadyCompleted(segmentMessage.EntireMessageHash)
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if err != nil {
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return err
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}
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if alreadyCompleted {
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return ErrMessageSegmentsAlreadyCompleted
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}
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if segmentMessage.SegmentsCount < 2 {
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return ErrMessageSegmentsInvalidCount
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}
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err = s.persistence.SaveMessageSegment(&segmentMessage, message.TransportLayer.SigPubKey)
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if err != nil {
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return err
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}
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segments, err := s.persistence.GetMessageSegments(segmentMessage.EntireMessageHash, message.TransportLayer.SigPubKey)
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if err != nil {
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return err
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}
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if len(segments) != int(segmentMessage.SegmentsCount) {
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return ErrMessageSegmentsIncomplete
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}
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// Combine payload
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var entirePayload bytes.Buffer
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for _, segment := range segments {
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_, err := entirePayload.Write(segment.Payload)
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if err != nil {
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return errors.Wrap(err, "failed to write segment payload")
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}
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}
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// Sanity check
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entirePayloadHash := crypto.Keccak256(entirePayload.Bytes())
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if !bytes.Equal(entirePayloadHash, segmentMessage.EntireMessageHash) {
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return ErrMessageSegmentsHashMismatch
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}
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err = s.persistence.CompleteMessageSegments(segmentMessage.EntireMessageHash, message.TransportLayer.SigPubKey)
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if err != nil {
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return err
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}
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message.TransportLayer.Payload = entirePayload.Bytes()
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return nil
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}
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@ -1,6 +1,7 @@
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package common
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import (
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"math"
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"testing"
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transport2 "github.com/status-im/status-go/protocol/transport"
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@ -304,3 +305,44 @@ func (s *MessageSenderSuite) TestHandleOutOfOrderHashRatchet() {
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s.Require().Len(msgs, 0)
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}
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func (s *MessageSenderSuite) TestHandleSegmentMessages() {
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relayerKey, err := crypto.GenerateKey()
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s.Require().NoError(err)
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authorKey, err := crypto.GenerateKey()
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s.Require().NoError(err)
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encodedPayload, err := proto.Marshal(&s.testMessage)
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s.Require().NoError(err)
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wrappedPayload, err := v1protocol.WrapMessageV1(encodedPayload, protobuf.ApplicationMetadataMessage_CHAT_MESSAGE, authorKey)
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s.Require().NoError(err)
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segmentedMessages, err := segmentMessage(&types.NewMessage{Payload: wrappedPayload}, int(math.Ceil(float64(len(wrappedPayload))/2)))
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s.Require().NoError(err)
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s.Require().Len(segmentedMessages, 2)
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message := &types.Message{}
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message.Sig = crypto.FromECDSAPub(&relayerKey.PublicKey)
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message.Payload = segmentedMessages[0].Payload
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// First segment is received, no messages are decoded
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decodedMessages, _, err := s.sender.HandleMessages(message)
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s.Require().NoError(err)
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s.Require().Len(decodedMessages, 0)
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// Second (and final) segment is received, reassembled message is decoded
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message.Payload = segmentedMessages[1].Payload
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decodedMessages, _, err = s.sender.HandleMessages(message)
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s.Require().NoError(err)
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s.Require().Len(decodedMessages, 1)
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s.Require().Equal(&authorKey.PublicKey, decodedMessages[0].SigPubKey())
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s.Require().Equal(v1protocol.MessageID(&authorKey.PublicKey, wrappedPayload), decodedMessages[0].ApplicationLayer.ID)
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s.Require().Equal(encodedPayload, decodedMessages[0].ApplicationLayer.Payload)
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s.Require().Equal(protobuf.ApplicationMetadataMessage_CHAT_MESSAGE, decodedMessages[0].ApplicationLayer.Type)
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// Receiving another segment after the message has been reassembled is considered an error
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_, _, err = s.sender.HandleMessages(message)
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s.Require().ErrorIs(err, ErrMessageSegmentsAlreadyCompleted)
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}
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@ -3,6 +3,7 @@ package common
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import (
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"bytes"
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"context"
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"crypto/ecdsa"
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"database/sql"
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"encoding/gob"
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"strings"
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@ -336,3 +337,78 @@ func (db RawMessagesPersistence) DeleteHashRatchetMessages(ids [][]byte) error {
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return err
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}
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func (db *RawMessagesPersistence) IsMessageAlreadyCompleted(hash []byte) (bool, error) {
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var alreadyCompleted int
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err := db.db.QueryRow("SELECT COUNT(*) FROM message_segments_completed WHERE hash = ?", hash).Scan(&alreadyCompleted)
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if err != nil {
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return false, err
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}
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return alreadyCompleted > 0, nil
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}
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func (db *RawMessagesPersistence) SaveMessageSegment(segment *protobuf.SegmentMessage, sigPubKey *ecdsa.PublicKey) error {
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sigPubKeyBlob := crypto.CompressPubkey(sigPubKey)
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_, err := db.db.Exec("INSERT INTO message_segments (hash, segment_index, segments_count, sig_pub_key, payload) VALUES (?, ?, ?, ?, ?)",
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segment.EntireMessageHash, segment.Index, segment.SegmentsCount, sigPubKeyBlob, segment.Payload)
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return err
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}
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// Get ordered message segments for given hash
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func (db *RawMessagesPersistence) GetMessageSegments(hash []byte, sigPubKey *ecdsa.PublicKey) ([]*protobuf.SegmentMessage, error) {
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sigPubKeyBlob := crypto.CompressPubkey(sigPubKey)
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rows, err := db.db.Query("SELECT hash, segment_index, segments_count, payload FROM message_segments WHERE hash = ? AND sig_pub_key = ? ORDER BY segment_index", hash, sigPubKeyBlob)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var segments []*protobuf.SegmentMessage
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for rows.Next() {
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var segment protobuf.SegmentMessage
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err := rows.Scan(&segment.EntireMessageHash, &segment.Index, &segment.SegmentsCount, &segment.Payload)
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if err != nil {
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return nil, err
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}
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segments = append(segments, &segment)
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}
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err = rows.Err()
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if err != nil {
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return nil, err
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}
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return segments, nil
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}
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func (db *RawMessagesPersistence) CompleteMessageSegments(hash []byte, sigPubKey *ecdsa.PublicKey) error {
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tx, err := db.db.BeginTx(context.Background(), &sql.TxOptions{})
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if err != nil {
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return err
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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// don't shadow original error
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_ = tx.Rollback()
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}()
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sigPubKeyBlob := crypto.CompressPubkey(sigPubKey)
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_, err = tx.Exec("DELETE FROM message_segments WHERE hash = ? AND sig_pub_key = ?", hash, sigPubKeyBlob)
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if err != nil {
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return err
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}
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_, err = tx.Exec("INSERT INTO message_segments_completed (hash, sig_pub_key) VALUES (?,?)", hash, sigPubKeyBlob)
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if err != nil {
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return err
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}
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return err
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}
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,14 @@
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CREATE TABLE IF NOT EXISTS message_segments (
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hash BLOB NOT NULL,
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segment_index INTEGER NOT NULL,
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segments_count INTEGER NOT NULL,
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payload BLOB NOT NULL,
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sig_pub_key BLOB NOT NULL,
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PRIMARY KEY (hash, sig_pub_key, segment_index) ON CONFLICT REPLACE
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);
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CREATE TABLE IF NOT EXISTS message_segments_completed (
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hash BLOB NOT NULL,
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sig_pub_key BLOB NOT NULL,
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PRIMARY KEY (hash, sig_pub_key)
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);
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@ -0,0 +1,111 @@
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// Code generated by protoc-gen-go. DO NOT EDIT.
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// source: segment_message.proto
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package protobuf
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import (
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fmt "fmt"
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proto "github.com/golang/protobuf/proto"
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math "math"
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)
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// Reference imports to suppress errors if they are not otherwise used.
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var _ = proto.Marshal
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var _ = fmt.Errorf
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var _ = math.Inf
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// This is a compile-time assertion to ensure that this generated file
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// is compatible with the proto package it is being compiled against.
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// A compilation error at this line likely means your copy of the
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// proto package needs to be updated.
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const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
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type SegmentMessage struct {
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// hash of the entire original message
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EntireMessageHash []byte `protobuf:"bytes,1,opt,name=entire_message_hash,json=entireMessageHash,proto3" json:"entire_message_hash,omitempty"`
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// Index of this segment within the entire original message
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Index uint32 `protobuf:"varint,2,opt,name=index,proto3" json:"index,omitempty"`
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// Total number of segments the entire original message is divided into
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SegmentsCount uint32 `protobuf:"varint,3,opt,name=segments_count,json=segmentsCount,proto3" json:"segments_count,omitempty"`
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// The payload data for this particular segment
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Payload []byte `protobuf:"bytes,4,opt,name=payload,proto3" json:"payload,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *SegmentMessage) Reset() { *m = SegmentMessage{} }
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func (m *SegmentMessage) String() string { return proto.CompactTextString(m) }
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func (*SegmentMessage) ProtoMessage() {}
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func (*SegmentMessage) Descriptor() ([]byte, []int) {
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return fileDescriptor_857302809a887a8b, []int{0}
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}
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func (m *SegmentMessage) XXX_Unmarshal(b []byte) error {
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return xxx_messageInfo_SegmentMessage.Unmarshal(m, b)
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}
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func (m *SegmentMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
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return xxx_messageInfo_SegmentMessage.Marshal(b, m, deterministic)
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}
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func (m *SegmentMessage) XXX_Merge(src proto.Message) {
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xxx_messageInfo_SegmentMessage.Merge(m, src)
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}
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func (m *SegmentMessage) XXX_Size() int {
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return xxx_messageInfo_SegmentMessage.Size(m)
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}
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func (m *SegmentMessage) XXX_DiscardUnknown() {
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xxx_messageInfo_SegmentMessage.DiscardUnknown(m)
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}
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var xxx_messageInfo_SegmentMessage proto.InternalMessageInfo
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func (m *SegmentMessage) GetEntireMessageHash() []byte {
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if m != nil {
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return m.EntireMessageHash
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}
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return nil
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}
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func (m *SegmentMessage) GetIndex() uint32 {
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if m != nil {
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return m.Index
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}
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return 0
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}
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func (m *SegmentMessage) GetSegmentsCount() uint32 {
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if m != nil {
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return m.SegmentsCount
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}
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return 0
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}
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func (m *SegmentMessage) GetPayload() []byte {
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if m != nil {
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return m.Payload
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}
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return nil
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}
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func init() {
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proto.RegisterType((*SegmentMessage)(nil), "protobuf.SegmentMessage")
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}
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func init() {
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proto.RegisterFile("segment_message.proto", fileDescriptor_857302809a887a8b)
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}
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var fileDescriptor_857302809a887a8b = []byte{
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// 169 bytes of a gzipped FileDescriptorProto
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0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x2d, 0x4e, 0x4d, 0xcf,
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||||
0x4d, 0xcd, 0x2b, 0x89, 0xcf, 0x4d, 0x2d, 0x2e, 0x4e, 0x4c, 0x4f, 0xd5, 0x2b, 0x28, 0xca, 0x2f,
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0xc9, 0x17, 0xe2, 0x00, 0x53, 0x49, 0xa5, 0x69, 0x4a, 0xd3, 0x19, 0xb9, 0xf8, 0x82, 0x21, 0x6a,
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0x7c, 0x21, 0x4a, 0x84, 0xf4, 0xb8, 0x84, 0x53, 0xf3, 0x4a, 0x32, 0x8b, 0x52, 0x61, 0x9a, 0xe2,
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0x33, 0x12, 0x8b, 0x33, 0x24, 0x18, 0x15, 0x18, 0x35, 0x78, 0x82, 0x04, 0x21, 0x52, 0x50, 0xb5,
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0x1e, 0x89, 0xc5, 0x19, 0x42, 0x22, 0x5c, 0xac, 0x99, 0x79, 0x29, 0xa9, 0x15, 0x12, 0x4c, 0x0a,
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0x8c, 0x1a, 0xbc, 0x41, 0x10, 0x8e, 0x90, 0x2a, 0x17, 0x1f, 0xd4, 0xee, 0xe2, 0xf8, 0xe4, 0xfc,
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0xd2, 0xbc, 0x12, 0x09, 0x66, 0xb0, 0x34, 0x2f, 0x4c, 0xd4, 0x19, 0x24, 0x28, 0x24, 0xc1, 0xc5,
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0x5e, 0x90, 0x58, 0x99, 0x93, 0x9f, 0x98, 0x22, 0xc1, 0x02, 0xb6, 0x00, 0xc6, 0x75, 0xe2, 0x8d,
|
||||
0xe2, 0xd6, 0xd3, 0xb7, 0x86, 0x39, 0x34, 0x89, 0x0d, 0xcc, 0x32, 0x06, 0x04, 0x00, 0x00, 0xff,
|
||||
0xff, 0x12, 0x40, 0x55, 0x2e, 0xd2, 0x00, 0x00, 0x00,
|
||||
}
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
syntax = "proto3";
|
||||
|
||||
option go_package = "./;protobuf";
|
||||
package protobuf;
|
||||
|
||||
message SegmentMessage {
|
||||
// hash of the entire original message
|
||||
bytes entire_message_hash = 1;
|
||||
// Index of this segment within the entire original message
|
||||
uint32 index = 2;
|
||||
// Total number of segments the entire original message is divided into
|
||||
uint32 segments_count = 3;
|
||||
// The payload data for this particular segment
|
||||
bytes payload = 4;
|
||||
}
|
||||
|
|
@ -4,7 +4,7 @@ import (
|
|||
"github.com/golang/protobuf/proto"
|
||||
)
|
||||
|
||||
//go:generate protoc --go_out=. ./chat_message.proto ./application_metadata_message.proto ./membership_update_message.proto ./command.proto ./contact.proto ./pairing.proto ./push_notifications.proto ./emoji_reaction.proto ./enums.proto ./shard.proto ./group_chat_invitation.proto ./chat_identity.proto ./communities.proto ./pin_message.proto ./anon_metrics.proto ./status_update.proto ./sync_settings.proto ./contact_verification.proto ./community_update.proto ./community_shard_key.proto ./url_data.proto ./community_privileged_user_sync_message.proto ./profile_showcase.proto
|
||||
//go:generate protoc --go_out=. ./chat_message.proto ./application_metadata_message.proto ./membership_update_message.proto ./command.proto ./contact.proto ./pairing.proto ./push_notifications.proto ./emoji_reaction.proto ./enums.proto ./shard.proto ./group_chat_invitation.proto ./chat_identity.proto ./communities.proto ./pin_message.proto ./anon_metrics.proto ./status_update.proto ./sync_settings.proto ./contact_verification.proto ./community_update.proto ./community_shard_key.proto ./url_data.proto ./community_privileged_user_sync_message.proto ./profile_showcase.proto ./segment_message.proto
|
||||
|
||||
func Unmarshal(payload []byte) (*ApplicationMetadataMessage, error) {
|
||||
var message ApplicationMetadataMessage
|
||||
|
|
|
|||
Loading…
Reference in New Issue