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multi: upgrade new taproot TLVs to use tlv.OptionalRecordT

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In this commit, we update new Taproot related TLVs (nonces, partial sig,
sig with nonce, etc). Along the way we were able to get rid of some
boiler plate, but most importantly, we're able to better protect against
API misuse (using a nonce that isn't initialized, etc) with the new
options API. In some areas this introduces a bit of extra boiler plate,
and where applicable I used some new helper functions to help cut down
on the noise.

Note to reviewers: this is done as a single commit, as changing the API
breaks all callers, so if we want things to compile it needs to be in a
wumbo commit.
This commit is contained in:
Olaoluwa Osuntokun
2024-02-23 18:04:51 -08:00
parent 6bd556d38c
commit 7feb8b21e1
20 changed files with 401 additions and 288 deletions
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14
lnwire/channel_ready.go
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@@ -31,7 +31,7 @@ type ChannelReady struct {
// This will only be populated if the simple taproot channels type was
// negotiated. This is the local nonce that will be used by the sender
// to accept a new commitment state transition.
NextLocalNonce *Musig2Nonce
NextLocalNonce OptMusig2NonceTLV
// ExtraData is the set of data that was appended to this message to
// fill out the full maximum transport message size. These fields can
@@ -77,7 +77,7 @@ func (c *ChannelReady) Decode(r io.Reader, _ uint32) error {
// the AliasScidRecordType.
var (
aliasScid ShortChannelID
localNonce Musig2Nonce
localNonce = c.NextLocalNonce.Zero()
)
typeMap, err := tlvRecords.ExtractRecords(
&aliasScid, &localNonce,
@@ -91,8 +91,8 @@ func (c *ChannelReady) Decode(r io.Reader, _ uint32) error {
if val, ok := typeMap[AliasScidRecordType]; ok && val == nil {
c.AliasScid = &aliasScid
}
if val, ok := typeMap[NonceRecordType]; ok && val == nil {
c.NextLocalNonce = &localNonce
if val, ok := typeMap[c.NextLocalNonce.TlvType()]; ok && val == nil {
c.NextLocalNonce = tlv.SomeRecordT(localNonce)
}
if len(tlvRecords) != 0 {
@@ -121,9 +121,9 @@ func (c *ChannelReady) Encode(w *bytes.Buffer, _ uint32) error {
if c.AliasScid != nil {
recordProducers = append(recordProducers, c.AliasScid)
}
if c.NextLocalNonce != nil {
recordProducers = append(recordProducers, c.NextLocalNonce)
}
c.NextLocalNonce.WhenSome(func(localNonce Musig2NonceTLV) {
recordProducers = append(recordProducers, &localNonce)
})
err := EncodeMessageExtraData(&c.ExtraData, recordProducers...)
if err != nil {
return err