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Merge pull request #6771 from hieblmi/handle-trivial-psbt-signing

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psbt: signal user that no psbt inputs were signed
This commit is contained in:
Oliver Gugger 2022-08-17 09:59:21 +02:00 committed by GitHub
commit e520d5e79c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 210 additions and 172 deletions
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6
docs/release-notes/release-notes-0.16.0.md
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@ -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

322
lnrpc/walletrpc/walletkit.pb.go
View File

@ -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{
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}
var (

3
lnrpc/walletrpc/walletkit.proto
View File

@ -885,6 +885,9 @@ message SignPsbtRequest {
message SignPsbtResponse {
// The signed transaction in PSBT format.
bytes signed_psbt = 1;
// The indices of signed inputs.
repeated uint32 signed_inputs = 2;
}
message FinalizePsbtRequest {

8
lnrpc/walletrpc/walletkit.swagger.json
View File

@ -1567,6 +1567,14 @@
"type": "string",
"format": "byte",
"description": "The signed transaction in PSBT format."
},
"signed_inputs": {
"type": "array",
"items": {
"type": "integer",
"format": "int64"
},
"description": "The indices of signed inputs."
}
}
},

5
lnrpc/walletrpc/walletkit_server.go
View File

@ -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
}

4
lntest/mock/walletcontroller.go
View File

@ -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.

16
lnwallet/btcwallet/psbt.go
View File

@ -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

6
lnwallet/btcwallet/psbt_test.go
View File

@ -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)

2
lnwallet/interface.go
View File

@ -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

10
lnwallet/rpcwallet/rpcwallet.go
View File

@ -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