diff --git a/docs/release-notes/release-notes-0.16.0.md b/docs/release-notes/release-notes-0.16.0.md index c4d317f0e..123b92cce 100644 --- a/docs/release-notes/release-notes-0.16.0.md +++ b/docs/release-notes/release-notes-0.16.0.md @@ -11,6 +11,11 @@ transaction](https://github.com/lightningnetwork/lnd/pull/6730). allow specifying a root key for macaroons during wallet init rather than having lnd randomly generate one for you. +* [A new `SignedInputs`](https://github.com/lightningnetwork/lnd/pull/6771) + field is added to `SignPsbtResponse` that returns the indices of inputs + that were signed by our wallet. Prior to this change `SignPsbt` didn't + indicate whether the Psbt held any inputs for our wallet to sign. + ## Misc * Warning messages from peers are now recognized and [logged](https://github.com/lightningnetwork/lnd/pull/6546) by lnd. @@ -39,5 +44,6 @@ transaction](https://github.com/lightningnetwork/lnd/pull/6730). * Daniel McNally * Elle Mouton * ErikEk +* hieblmi * Olaoluwa Osuntokun * Oliver Gugger diff --git a/lnrpc/walletrpc/walletkit.pb.go b/lnrpc/walletrpc/walletkit.pb.go index 9e3954760..d8b3daef7 100644 --- a/lnrpc/walletrpc/walletkit.pb.go +++ b/lnrpc/walletrpc/walletkit.pb.go @@ -2731,6 +2731,8 @@ type SignPsbtResponse struct { // The signed transaction in PSBT format. SignedPsbt []byte `protobuf:"bytes,1,opt,name=signed_psbt,json=signedPsbt,proto3" json:"signed_psbt,omitempty"` + // The indices of signed inputs. + SignedInputs []uint32 `protobuf:"varint,2,rep,packed,name=signed_inputs,json=signedInputs,proto3" json:"signed_inputs,omitempty"` } func (x *SignPsbtResponse) Reset() { @@ -2772,6 +2774,13 @@ func (x *SignPsbtResponse) GetSignedPsbt() []byte { return nil } +func (x *SignPsbtResponse) GetSignedInputs() []uint32 { + if x != nil { + return x.SignedInputs + } + return nil +} + type FinalizePsbtRequest struct { state protoimpl.MessageState sizeCache protoimpl.SizeCache @@ -3318,167 +3327,170 @@ var file_walletrpc_walletkit_proto_rawDesc = []byte{ 0x28, 0x04, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x22, 0x32, 0x0a, 0x0f, 0x53, 0x69, 0x67, 0x6e, 0x50, 0x73, 0x62, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x1f, 0x0a, 0x0b, 0x66, 0x75, 0x6e, 0x64, 0x65, 0x64, 0x5f, 0x70, 0x73, 0x62, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, - 0x0c, 0x52, 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"signed_inputs": { + "type": "array", + "items": { + "type": "integer", + "format": "int64" + }, + "description": "The indices of signed inputs." } } }, diff --git a/lnrpc/walletrpc/walletkit_server.go b/lnrpc/walletrpc/walletkit_server.go index fa16b7494..c471a0522 100644 --- a/lnrpc/walletrpc/walletkit_server.go +++ b/lnrpc/walletrpc/walletkit_server.go @@ -1261,7 +1261,7 @@ func (w *WalletKit) SignPsbt(_ context.Context, req *SignPsbtRequest) ( // Let the wallet do the heavy lifting. This will sign all inputs that // we have the UTXO for. If some inputs can't be signed and don't have // witness data attached, they will just be skipped. - err = w.cfg.Wallet.SignPsbt(packet) + signedInputs, err := w.cfg.Wallet.SignPsbt(packet) if err != nil { return nil, fmt.Errorf("error signing PSBT: %v", err) } @@ -1274,7 +1274,8 @@ func (w *WalletKit) SignPsbt(_ context.Context, req *SignPsbtRequest) ( } return &SignPsbtResponse{ - SignedPsbt: signedPsbtBytes.Bytes(), + SignedPsbt: signedPsbtBytes.Bytes(), + SignedInputs: signedInputs, }, nil } diff --git a/lntest/mock/walletcontroller.go b/lntest/mock/walletcontroller.go index 3cd237076..f47864912 100644 --- a/lntest/mock/walletcontroller.go +++ b/lntest/mock/walletcontroller.go @@ -204,8 +204,8 @@ func (w *WalletController) FundPsbt(*psbt.Packet, int32, chainfee.SatPerKWeight, } // SignPsbt currently does nothing. -func (w *WalletController) SignPsbt(*psbt.Packet) error { - return nil +func (w *WalletController) SignPsbt(*psbt.Packet) ([]uint32, error) { + return nil, nil } // FinalizePsbt currently does nothing. diff --git a/lnwallet/btcwallet/psbt.go b/lnwallet/btcwallet/psbt.go index bf2f4cac0..e47267e21 100644 --- a/lnwallet/btcwallet/psbt.go +++ b/lnwallet/btcwallet/psbt.go @@ -98,12 +98,16 @@ func (b *BtcWallet) FundPsbt(packet *psbt.Packet, minConfs int32, // perform any other tasks (such as coin selection, UTXO locking or // input/output/fee value validation, PSBT finalization). Any input that is // incomplete will be skipped. -func (b *BtcWallet) SignPsbt(packet *psbt.Packet) error { +func (b *BtcWallet) SignPsbt(packet *psbt.Packet) ([]uint32, error) { + // In signedInputs we return the indices of psbt inputs that were signed + // by our wallet. This way the caller can check if any inputs were signed. + var signedInputs []uint32 + // Let's check that this is actually something we can and want to sign. // We need at least one input and one output. err := psbt.VerifyInputOutputLen(packet, true, true) if err != nil { - return err + return nil, err } // Go through each input that doesn't have final witness data attached @@ -173,7 +177,7 @@ func (b *BtcWallet) SignPsbt(packet *psbt.Packet) error { // information we need? signMethod, err := validateSigningMethod(in) if err != nil { - return err + return nil, err } switch signMethod { @@ -211,11 +215,11 @@ func (b *BtcWallet) SignPsbt(packet *psbt.Packet) error { "PSBT signing: %v", signMethod) } if err != nil { - return err + return nil, err } + signedInputs = append(signedInputs, uint32(idx)) } - - return nil + return signedInputs, nil } // validateSigningMethod attempts to detect the signing method that is required diff --git a/lnwallet/btcwallet/psbt_test.go b/lnwallet/btcwallet/psbt_test.go index ae7c432ac..6bb657d8b 100644 --- a/lnwallet/btcwallet/psbt_test.go +++ b/lnwallet/btcwallet/psbt_test.go @@ -318,9 +318,13 @@ func TestSignPsbt(t *testing.T) { // Let the wallet do its job. We expect to be the only signer // for this PSBT, so we'll be able to finalize it later. - err = w.SignPsbt(packet) + signedInputs, err := w.SignPsbt(packet) require.NoError(t, err) + // We expect one signed input at index 0. + require.Len(t, signedInputs, 1) + require.EqualValues(t, 0, signedInputs[0]) + // If the witness stack needs to be assembled, give the caller // the option to do that now. tc.inputType.finalize(t, packet) diff --git a/lnwallet/interface.go b/lnwallet/interface.go index 146fb8e58..8837f3788 100644 --- a/lnwallet/interface.go +++ b/lnwallet/interface.go @@ -428,7 +428,7 @@ type WalletController interface { // does not perform any other tasks (such as coin selection, UTXO // locking or input/output/fee value validation, PSBT finalization). Any // input that is incomplete will be skipped. - SignPsbt(packet *psbt.Packet) error + SignPsbt(packet *psbt.Packet) ([]uint32, error) // FinalizePsbt expects a partial transaction with all inputs and // outputs fully declared and tries to sign all inputs that belong to diff --git a/lnwallet/rpcwallet/rpcwallet.go b/lnwallet/rpcwallet/rpcwallet.go index fbd92d230..b2b8bbfc5 100644 --- a/lnwallet/rpcwallet/rpcwallet.go +++ b/lnwallet/rpcwallet/rpcwallet.go @@ -188,13 +188,13 @@ func (r *RPCKeyRing) SendOutputs(outputs []*wire.TxOut, // perform any other tasks (such as coin selection, UTXO locking or // input/output/fee value validation, PSBT finalization). Any input that is // incomplete will be skipped. -func (r *RPCKeyRing) SignPsbt(packet *psbt.Packet) error { +func (r *RPCKeyRing) SignPsbt(packet *psbt.Packet) ([]uint32, error) { ctxt, cancel := context.WithTimeout(context.Background(), r.rpcTimeout) defer cancel() var buf bytes.Buffer if err := packet.Serialize(&buf); err != nil { - return fmt.Errorf("error serializing PSBT: %v", err) + return nil, fmt.Errorf("error serializing PSBT: %v", err) } resp, err := r.walletClient.SignPsbt(ctxt, &walletrpc.SignPsbtRequest{ @@ -202,7 +202,7 @@ func (r *RPCKeyRing) SignPsbt(packet *psbt.Packet) error { }) if err != nil { considerShutdown(err) - return fmt.Errorf("error signing PSBT in remote signer "+ + return nil, fmt.Errorf("error signing PSBT in remote signer "+ "instance: %v", err) } @@ -210,7 +210,7 @@ func (r *RPCKeyRing) SignPsbt(packet *psbt.Packet) error { bytes.NewReader(resp.SignedPsbt), false, ) if err != nil { - return fmt.Errorf("error parsing signed PSBT: %v", err) + return nil, fmt.Errorf("error parsing signed PSBT: %v", err) } // The caller expects the packet to be modified instead of a new @@ -221,7 +221,7 @@ func (r *RPCKeyRing) SignPsbt(packet *psbt.Packet) error { packet.Outputs = signedPacket.Outputs packet.Unknowns = signedPacket.Unknowns - return nil + return resp.SignedInputs, nil } // FinalizePsbt expects a partial transaction with all inputs and outputs fully