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chan_series: filter out nodes who intend to remain private

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In this commit, we filter out nodes who intend to remain private. We do
this to prevent leaking information about them by forwarding their
NodeAnnouncements.
This commit is contained in:
Wilmer Paulino 2018-10-17 16:09:34 -07:00
parent 85cdb18b73
commit cbab298154
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1 changed files with 16 additions and 0 deletions
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16
chan_series.go
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@ -89,6 +89,22 @@ func (c *chanSeries) UpdatesInHorizon(chain chainhash.Hash,
return nil, err
}
for _, nodeAnn := range nodeAnnsInHorizon {
// Ensure we only forward nodes that are publicly advertised to
// prevent leaking information about nodes.
isNodePublic, err := c.graph.IsPublicNode(nodeAnn.PubKeyBytes)
if err != nil {
srvrLog.Errorf("Unable to determine if node %x is "+
"advertised: %v", nodeAnn.PubKeyBytes, err)
continue
}
if !isNodePublic {
srvrLog.Tracef("Skipping forwarding announcement for "+
"node %x due to being unadvertised",
nodeAnn.PubKeyBytes)
continue
}
nodeUpdate, err := nodeAnn.NodeAnnouncement(true)
if err != nil {
return nil, err