lnwire: TestLightningWireProtocol quick check tests for taproot fields

docs/release-notes/release-notes-0.17.0.md

@@ -1,5 +1,10 @@
 # Release Notes
 
+## BOLT Specs
+
+* The `lnwire` library is now able to [parse messages for the new experimental
+  taproot channels spec proposal](https://github.com/lightningnetwork/lnd/pull/7331).
+
 ## DB
 
 * Split channeldb [`UpdateInvoice`
@@ -285,3 +290,7 @@
 * Yong Yu
 * ziggie1984
 * zx9r
+
+# Contributors (Alphabetical Order)
+
+* Olaoluwa Osuntokun

lnwire/lnwire_test.go

@@ -4,7 +4,9 @@ import (
 	"bytes"
 	"encoding/binary"
 	"encoding/hex"
+	"fmt"
 	"image/color"
+	"io"
 	"math"
 	"math/rand"
 	"net"
@@ -39,6 +41,42 @@ var (
 
 const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
+func randLocalNonce(r *rand.Rand) *Musig2Nonce {
+	var nonce Musig2Nonce
+	_, _ = io.ReadFull(r, nonce[:])
+
+	return &nonce
+}
+
+func randPartialSig(r *rand.Rand) (*PartialSig, error) {
+	var sigBytes [32]byte
+	if _, err := r.Read(sigBytes[:]); err != nil {
+		return nil, fmt.Errorf("unable to generate sig: %w", err)
+	}
+
+	var s btcec.ModNScalar
+	s.SetByteSlice(sigBytes[:])
+
+	return &PartialSig{
+		Sig: s,
+	}, nil
+}
+
+func randPartialSigWithNonce(r *rand.Rand) (*PartialSigWithNonce, error) {
+	var sigBytes [32]byte
+	if _, err := r.Read(sigBytes[:]); err != nil {
+		return nil, fmt.Errorf("unable to generate sig: %w", err)
+	}
+
+	var s btcec.ModNScalar
+	s.SetByteSlice(sigBytes[:])
+
+	return &PartialSigWithNonce{
+		PartialSig: NewPartialSig(s),
+		Nonce:      *randLocalNonce(r),
+	}, nil
+}
+
 func randAlias(r *rand.Rand) NodeAlias {
 	var a NodeAlias
 	for i := range a {
@@ -438,6 +476,8 @@ func TestLightningWireProtocol(t *testing.T) {
 
 				req.LeaseExpiry = new(LeaseExpiry)
 				*req.LeaseExpiry = LeaseExpiry(1337)
+
+				req.LocalNonce = randLocalNonce(r)
 			} else {
 				req.UpfrontShutdownScript = []byte{}
 			}
@@ -510,6 +550,8 @@ func TestLightningWireProtocol(t *testing.T) {
 
 				req.LeaseExpiry = new(LeaseExpiry)
 				*req.LeaseExpiry = LeaseExpiry(1337)
+
+				req.LocalNonce = randLocalNonce(r)
 			} else {
 				req.UpfrontShutdownScript = []byte{}
 			}
@@ -544,6 +586,16 @@ func TestLightningWireProtocol(t *testing.T) {
 				return
 			}
 
+			// 1/2 chance to attach a partial sig.
+			if r.Intn(2) == 0 {
+				req.PartialSig, err = randPartialSigWithNonce(r)
+				if err != nil {
+					t.Fatalf("unable to generate sig: %v",
+						err)
+					return
+				}
+			}
+
 			v[0] = reflect.ValueOf(req)
 		},
 		MsgFundingSigned: func(v []reflect.Value, r *rand.Rand) {
@@ -564,6 +616,16 @@ func TestLightningWireProtocol(t *testing.T) {
 				return
 			}
 
+			// 1/2 chance to attach a partial sig.
+			if r.Intn(2) == 0 {
+				req.PartialSig, err = randPartialSigWithNonce(r)
+				if err != nil {
+					t.Fatalf("unable to generate sig: %v",
+						err)
+					return
+				}
+			}
+
 			v[0] = reflect.ValueOf(req)
 		},
 		MsgChannelReady: func(v []reflect.Value, r *rand.Rand) {
@@ -581,8 +643,43 @@ func TestLightningWireProtocol(t *testing.T) {
 
 			req := NewChannelReady(ChannelID(c), pubKey)
 
+			if r.Int31()%2 == 0 {
+				scid := NewShortChanIDFromInt(uint64(r.Int63()))
+				req.AliasScid = &scid
+				req.NextLocalNonce = randLocalNonce(r)
+			}
+
 			v[0] = reflect.ValueOf(*req)
 		},
+		MsgShutdown: func(v []reflect.Value, r *rand.Rand) {
+			var c [32]byte
+			_, err := r.Read(c[:])
+			if err != nil {
+				t.Fatalf("unable to generate chan id: %v", err)
+				return
+			}
+
+			shutdownAddr, err := randDeliveryAddress(r)
+			if err != nil {
+				t.Fatalf("unable to generate delivery "+
+					"address: %v", err)
+				return
+			}
+
+			req := Shutdown{
+				ChannelID: ChannelID(c),
+				Address:   shutdownAddr,
+				ExtraData: make([]byte, 0),
+			}
+
+			if r.Int31()%2 == 0 {
+				req.ShutdownNonce = (*ShutdownNonce)(
+					randLocalNonce(r),
+				)
+			}
+
+			v[0] = reflect.ValueOf(req)
+		},
 		MsgClosingSigned: func(v []reflect.Value, r *rand.Rand) {
 			req := ClosingSigned{
 				FeeSatoshis: btcutil.Amount(r.Int63()),
@@ -600,6 +697,15 @@ func TestLightningWireProtocol(t *testing.T) {
 				return
 			}
 
+			if r.Int31()%2 == 0 {
+				req.PartialSig, err = randPartialSig(r)
+				if err != nil {
+					t.Fatalf("unable to generate sig: %v",
+						err)
+					return
+				}
+			}
+
 			v[0] = reflect.ValueOf(req)
 		},
 		MsgCommitSig: func(v []reflect.Value, r *rand.Rand) {
@@ -619,7 +725,7 @@ func TestLightningWireProtocol(t *testing.T) {
 			// Only create the slice if there will be any signatures
 			// in it to prevent false positive test failures due to
 			// an empty slice versus a nil slice.
-			numSigs := uint16(r.Int31n(1020))
+			numSigs := uint16(r.Int31n(1019))
 			if numSigs > 0 {
 				req.HtlcSigs = make([]Sig, numSigs)
 			}
@@ -631,6 +737,16 @@ func TestLightningWireProtocol(t *testing.T) {
 				}
 			}
 
+			// 50/50 chance to attach a partial sig.
+			if r.Int31()%2 == 0 {
+				req.PartialSig, err = randPartialSigWithNonce(r)
+				if err != nil {
+					t.Fatalf("unable to generate sig: %v",
+						err)
+					return
+				}
+			}
+
 			v[0] = reflect.ValueOf(*req)
 		},
 		MsgRevokeAndAck: func(v []reflect.Value, r *rand.Rand) {
@@ -650,6 +766,11 @@ func TestLightningWireProtocol(t *testing.T) {
 				return
 			}
 
+			// 50/50 chance to attach a local nonce.
+			if r.Int31()%2 == 0 {
+				req.LocalNonce = randLocalNonce(r)
+			}
+
 			v[0] = reflect.ValueOf(*req)
 		},
 		MsgChannelAnnouncement: func(v []reflect.Value, r *rand.Rand) {
@@ -870,6 +991,8 @@ func TestLightningWireProtocol(t *testing.T) {
 					t.Fatalf("unable to generate key: %v", err)
 					return
 				}
+
+				req.LocalNonce = randLocalNonce(r)
 			}
 
 			v[0] = reflect.ValueOf(req)

lnwire/signature.go

@@ -250,7 +250,7 @@ func (s *Sig) ToSignatureBytes() []byte {
 	// For schnorr signatures, we can use the same internal 64 bytes.
 	case sigTypeSchnorr:
 		// We'll make a copy of the signature so we don't return a
-		// refrence into the raw slice.
+		// reference into the raw slice.
 		var sig [64]byte
 		copy(sig[:], s.bytes[:])
 		return sig[:]

lnwire/signature_test.go

@@ -26,7 +26,8 @@ func TestSignatureSerializeDeserialize(t *testing.T) {
 			return err
 		}
 
-		e2 := e2Input.(*ecdsa.Signature)
+		e2, ok := e2Input.(*ecdsa.Signature)
+		require.True(t, ok)
 
 		if !e.IsEqual(e2) {
 			return fmt.Errorf("pre/post-serialize sigs don't " +
@@ -192,15 +193,19 @@ func TestNewSigFromRawSignature(t *testing.T) {
 			expectedSig: Sig{
 				bytes: [64]byte{
 					// r value
-					0x4e, 0x45, 0xe1, 0x69, 0x32, 0xb8, 0xaf, 0x51,
-					0x49, 0x61, 0xa1, 0xd3, 0xa1, 0xa2, 0x5f, 0xdf,
-					0x3f, 0x4f, 0x77, 0x32, 0xe9, 0xd6, 0x24, 0xc6,
-					0xc6, 0x15, 0x48, 0xab, 0x5f, 0xb8, 0xcd, 0x41,
+					0x4e, 0x45, 0xe1, 0x69, 0x32, 0xb8,
+					0xaf, 0x51, 0x49, 0x61, 0xa1, 0xd3,
+					0xa1, 0xa2, 0x5f, 0xdf, 0x3f, 0x4f,
+					0x77, 0x32, 0xe9, 0xd6, 0x24, 0xc6,
+					0xc6, 0x15, 0x48, 0xab, 0x5f, 0xb8,
+					0xcd, 0x41,
 					// s value
-					0x18, 0x15, 0x22, 0xec, 0x8e, 0xca, 0x07, 0xde,
-					0x48, 0x60, 0xa4, 0xac, 0xdd, 0x12, 0x90, 0x9d,
-					0x83, 0x1c, 0xc5, 0x6c, 0xbb, 0xac, 0x46, 0x22,
-					0x08, 0x22, 0x21, 0xa8, 0x76, 0x8d, 0x1d, 0x09,
+					0x18, 0x15, 0x22, 0xec, 0x8e, 0xca,
+					0x07, 0xde, 0x48, 0x60, 0xa4, 0xac,
+					0xdd, 0x12, 0x90, 0x9d, 0x83, 0x1c,
+					0xc5, 0x6c, 0xbb, 0xac, 0x46, 0x22,
+					0x08, 0x22, 0x21, 0xa8, 0x76, 0x8d,
+					0x1d, 0x09,
 				},
 			},
 		},