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Merge pull request #2500 from Roasbeef/mandatory-dlp

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server: require the DLP bit for all incoming/outgoing connections
This commit is contained in:
Olaoluwa Osuntokun 2019-01-31 20:14:15 -08:00 committed by GitHub
commit 5167b02312
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2 changed files with 19 additions and 9 deletions
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26
peer.go
View File

@ -958,9 +958,9 @@ func (p *peer) readHandler() {
p.Disconnect(err)
})
// Initialize our negotiated gossip sync method before reading
// messages off the wire. When using gossip queries, this ensures
// a gossip syncer is active by the time query messages arrive.
// Initialize our negotiated gossip sync method before reading messages
// off the wire. When using gossip queries, this ensures a gossip
// syncer is active by the time query messages arrive.
//
// TODO(conner): have peer store gossip syncer directly and bypass
// gossiper?
@ -2146,18 +2146,21 @@ func (p *peer) WipeChannel(chanPoint *wire.OutPoint) error {
// handleInitMsg handles the incoming init message which contains global and
// local features vectors. If feature vectors are incompatible then disconnect.
func (p *peer) handleInitMsg(msg *lnwire.Init) error {
p.remoteLocalFeatures = lnwire.NewFeatureVector(msg.LocalFeatures,
lnwire.LocalFeatures)
p.remoteGlobalFeatures = lnwire.NewFeatureVector(msg.GlobalFeatures,
lnwire.GlobalFeatures)
p.remoteLocalFeatures = lnwire.NewFeatureVector(
msg.LocalFeatures, lnwire.LocalFeatures,
)
p.remoteGlobalFeatures = lnwire.NewFeatureVector(
msg.GlobalFeatures, lnwire.GlobalFeatures,
)
// Now that we have their features loaded, we'll ensure that they
// didn't set any required bits that we don't know of.
unknownLocalFeatures := p.remoteLocalFeatures.UnknownRequiredFeatures()
if len(unknownLocalFeatures) > 0 {
err := fmt.Errorf("Peer set unknown local feature bits: %v",
unknownLocalFeatures)
return err
}
unknownGlobalFeatures := p.remoteGlobalFeatures.UnknownRequiredFeatures()
if len(unknownGlobalFeatures) > 0 {
err := fmt.Errorf("Peer set unknown global feature bits: %v",
@ -2165,6 +2168,13 @@ func (p *peer) handleInitMsg(msg *lnwire.Init) error {
return err
}
// Now that we know we understand their requirements, we'll check to
// see if they don't support anything that we deem to be mandatory.
switch {
case !p.remoteLocalFeatures.HasFeature(lnwire.DataLossProtectRequired):
return fmt.Errorf("data loss protection required")
}
return nil
}

2
server.go
View File

@ -2370,7 +2370,7 @@ func (s *server) peerConnected(conn net.Conn, connReq *connmgr.ConnReq,
// We'll signal that we understand the data loss protection feature,
// and also that we support the new gossip query features.
localFeatures.Set(lnwire.DataLossProtectOptional)
localFeatures.Set(lnwire.DataLossProtectRequired)
localFeatures.Set(lnwire.GossipQueriesOptional)
// Now that we've established a connection, create a peer, and it to