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lnwallet: obtain+verify aux sigs for all second level HTLCs

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In this commit, we start to use the new AuxSigner to obtain+verify aux sigs for all second level HTLCs. This is similar to the existing SigPool, but we'll only attempt to do this if the AuxSigner is present (won't be for most channels).
This commit is contained in:
Olaoluwa Osuntokun
2024-04-08 19:48:36 -07:00
committed by Oliver Gugger
parent e9e10cc32f
commit c0c511c686
12 changed files with 181 additions and 36 deletions
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10
contractcourt/chain_arbitrator.go
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@@ -221,6 +221,10 @@ type ChainArbitratorConfig struct {
// AuxLeafStore is an optional store that can be used to store auxiliary
// leaves for certain custom channel types.
AuxLeafStore fn.Option[lnwallet.AuxLeafStore]
// AuxSigner is an optional signer that can be used to sign auxiliary
// leaves for certain custom channel types.
AuxSigner fn.Option[lnwallet.AuxSigner]
}
// ChainArbitrator is a sub-system that oversees the on-chain resolution of all
@@ -307,6 +311,9 @@ func (a *arbChannel) NewAnchorResolutions() (*lnwallet.AnchorResolutions,
a.c.cfg.AuxLeafStore.WhenSome(func(s lnwallet.AuxLeafStore) {
chanOpts = append(chanOpts, lnwallet.WithLeafStore(s))
})
a.c.cfg.AuxSigner.WhenSome(func(s lnwallet.AuxSigner) {
chanOpts = append(chanOpts, lnwallet.WithAuxSigner(s))
})
chanMachine, err := lnwallet.NewLightningChannel(
a.c.cfg.Signer, channel, nil, chanOpts...,
@@ -357,6 +364,9 @@ func (a *arbChannel) ForceCloseChan() (*lnwallet.LocalForceCloseSummary, error)
a.c.cfg.AuxLeafStore.WhenSome(func(s lnwallet.AuxLeafStore) {
chanOpts = append(chanOpts, lnwallet.WithLeafStore(s))
})
a.c.cfg.AuxSigner.WhenSome(func(s lnwallet.AuxSigner) {
chanOpts = append(chanOpts, lnwallet.WithAuxSigner(s))
})
// Finally, we'll force close the channel completing
// the force close workflow.