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peer: validate remote peer's feature deps

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This commit is contained in:
Conner Fromknecht
2019-12-16 13:06:59 -08:00
parent 3208e287c3
commit 34fd27280a
1 changed files with 9 additions and 0 deletions
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9
peer.go
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@@ -22,6 +22,7 @@ import (
"github.com/lightningnetwork/lnd/chainntnfs"
"github.com/lightningnetwork/lnd/channeldb"
"github.com/lightningnetwork/lnd/contractcourt"
"github.com/lightningnetwork/lnd/feature"
"github.com/lightningnetwork/lnd/htlcswitch"
"github.com/lightningnetwork/lnd/lnpeer"
"github.com/lightningnetwork/lnd/lnwallet"
@@ -2476,6 +2477,14 @@ func (p *peer) handleInitMsg(msg *lnwire.Init) error {
return err
}
// Ensure the remote party's feature vector contains all transistive
// dependencies. We know ours are are correct since they are validated
// during the feature manager's instantiation.
err = feature.ValidateDeps(p.remoteFeatures)
if err != nil {
return fmt.Errorf("peer set invalid feature vector: %v", 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 {