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routing/pathfind: validate final hop feature dependencies

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This commit is contained in:
Conner Fromknecht
2019-12-18 23:54:11 -08:00
parent cfa3fe2921
commit acb7b83ead
3 changed files with 104 additions and 1 deletions
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12
routing/pathfind.go
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@@ -10,6 +10,7 @@ import (
"github.com/btcsuite/btcd/btcec"
"github.com/coreos/bbolt"
"github.com/lightningnetwork/lnd/channeldb"
"github.com/lightningnetwork/lnd/feature"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/record"
"github.com/lightningnetwork/lnd/routing/route"
@@ -427,6 +428,17 @@ func findPath(g *graphParams, r *RestrictParams, cfg *PathFindingConfig,
}
}
// With the destination's feature vector selected, ensure that all
// transitive depdencies are set.
err = feature.ValidateDeps(features)
if err != nil {
return nil, err
}
// Now that we know the feature vector is well formed, we'll proceed in
// checking that it supports the features we need, given our
// restrictions on the final hop.
// If the caller needs to send custom records, check that our
// destination feature vector supports TLV.
if len(r.DestCustomRecords) > 0 &&