mirror of
https://github.com/lightninglabs/loop.git
synced 2026-08-13 12:33:03 +02:00
858066dd0c
Keep replacement UTXOs as fresh deposits while preserving the original deposit record and selected outpoint snapshot for pending swaps. Before signing a static loop-in HTLC, check each original selected outpoint with GetTxOut(..., includeMempool=true). Cancel the pending invoice only when that check reports an original outpoint unavailable; lookup errors fail the action without canceling so transient chain backend errors do not incorrectly abandon the swap. Keep recovered loop-ins using their stored outpoint snapshot and cover replacement discovery and cancellation in tests.
618 lines
18 KiB
Go
618 lines
18 KiB
Go
package loopin
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import (
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"context"
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"errors"
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"testing"
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"time"
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"github.com/btcsuite/btcd/btcec/v2"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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"github.com/lightninglabs/lndclient"
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"github.com/lightninglabs/loop/fsm"
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"github.com/lightninglabs/loop/staticaddr/deposit"
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"github.com/lightninglabs/loop/staticaddr/script"
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"github.com/lightninglabs/loop/staticaddr/version"
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"github.com/lightninglabs/loop/swap"
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"github.com/lightninglabs/loop/swapserverrpc"
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"github.com/lightninglabs/loop/test"
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"github.com/lightningnetwork/lnd/invoices"
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"github.com/lightningnetwork/lnd/lntypes"
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"github.com/lightningnetwork/lnd/zpay32"
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"github.com/stretchr/testify/require"
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"google.golang.org/grpc"
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)
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// TestMonitorInvoiceAndHtlcTxReRegistersOnConfErr ensures that an error from
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// the HTLC confirmation subscription triggers a re-registration. Without the
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// regression fix, only the initial registration would be performed and the
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// test would time out waiting for the second one.
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func TestMonitorInvoiceAndHtlcTxReRegistersOnConfErr(t *testing.T) {
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ctx, cancel := context.WithTimeout(t.Context(), 5*time.Second)
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defer cancel()
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mockLnd := test.NewMockLnd()
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clientKey, err := btcec.NewPrivateKey()
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require.NoError(t, err)
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serverKey, err := btcec.NewPrivateKey()
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require.NoError(t, err)
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swapHash := lntypes.Hash{1, 2, 3}
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loopIn := &StaticAddressLoopIn{
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SwapHash: swapHash,
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HtlcCltvExpiry: 2_000,
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InitiationHeight: uint32(mockLnd.Height),
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InitiationTime: time.Now(),
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ProtocolVersion: version.ProtocolVersion_V0,
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ClientPubkey: clientKey.PubKey(),
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ServerPubkey: serverKey.PubKey(),
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PaymentTimeoutSeconds: 3_600,
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}
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loopIn.SetState(MonitorInvoiceAndHtlcTx)
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// Seed the mock invoice store so LookupInvoice succeeds.
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mockLnd.SetInvoice(&lndclient.Invoice{
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Hash: swapHash,
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State: invoices.ContractOpen,
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})
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cfg := &Config{
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AddressManager: &mockAddressManager{
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params: &script.Parameters{
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ClientPubkey: clientKey.PubKey(),
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ServerPubkey: serverKey.PubKey(),
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ProtocolVersion: version.ProtocolVersion_V0,
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},
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},
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ChainNotifier: mockLnd.ChainNotifier,
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DepositManager: &noopDepositManager{},
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InvoicesClient: mockLnd.LndServices.Invoices,
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LndClient: mockLnd.Client,
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ChainParams: mockLnd.ChainParams,
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}
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f, err := NewFSM(ctx, loopIn, cfg, false)
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require.NoError(t, err)
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resultChan := make(chan fsm.EventType, 1)
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go func() {
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resultChan <- f.MonitorInvoiceAndHtlcTxAction(ctx, nil)
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}()
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// Capture the invoice subscription the action registers so we can feed
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// an update later and let the action exit.
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var invSub *test.SingleInvoiceSubscription
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select {
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case invSub = <-mockLnd.SingleInvoiceSubcribeChannel:
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case <-ctx.Done():
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t.Fatalf("invoice subscription not registered: %v", ctx.Err())
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}
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// The first confirmation registration should happen immediately.
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var firstReg *test.ConfRegistration
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select {
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case firstReg = <-mockLnd.RegisterConfChannel:
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case <-ctx.Done():
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t.Fatalf("htlc conf registration not received: %v", ctx.Err())
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}
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// Force the confirmation stream to error so the FSM re-registers.
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firstReg.ErrChan <- errors.New("test htlc conf error")
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// FSM registers again, otherwise it would time out.
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var secondReg *test.ConfRegistration
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select {
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case secondReg = <-mockLnd.RegisterConfChannel:
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case <-ctx.Done():
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t.Fatalf("htlc conf was not re-registered: %v", ctx.Err())
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}
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require.NotEqual(t, firstReg, secondReg)
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// Settle the invoice to let the action exit.
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invSub.Update <- lndclient.InvoiceUpdate{
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Invoice: lndclient.Invoice{
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Hash: swapHash,
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State: invoices.ContractSettled,
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},
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}
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select {
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case event := <-resultChan:
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require.Equal(t, OnPaymentReceived, event)
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case <-ctx.Done():
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t.Fatalf("fsm did not return: %v", ctx.Err())
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}
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}
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// TestInitHtlcActionPreservesRouteHints asserts that static-address loop-in
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// propagates explicit route hints into the encoded swap invoice sent to the
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// server. This currently fails because lndclient.AddInvoice drops route hints.
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func TestInitHtlcActionPreservesRouteHints(t *testing.T) {
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t.Parallel()
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mockLnd := test.NewMockLnd()
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_, serverKey := test.CreateKey(21)
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server := &mockStaticAddressServer{
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response: testStaticAddressLoopInResponse(
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serverKey.SerializeCompressed(),
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),
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}
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dep := &deposit.Deposit{
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OutPoint: wire.OutPoint{
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Hash: chainhash.Hash{1},
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Index: 0,
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},
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Value: 500_000,
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}
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loopIn := &StaticAddressLoopIn{
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Deposits: []*deposit.Deposit{dep},
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DepositOutpoints: []string{dep.OutPoint.String()},
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SelectedAmount: dep.Value,
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QuotedSwapFee: 1_000,
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RouteHints: testStaticAddressRouteHints(),
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InitiationHeight: uint32(mockLnd.Height),
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InitiationTime: time.Now(),
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PaymentTimeoutSeconds: 3_600,
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}
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f := &FSM{
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StateMachine: &fsm.StateMachine{},
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cfg: &Config{
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Server: server,
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DepositManager: &noopDepositManager{},
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LndClient: mockLnd.Client,
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WalletKit: mockLnd.WalletKit,
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ChainParams: mockLnd.ChainParams,
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Store: &mockStore{},
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ValidateLoopInContract: testValidateLoopInContract,
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MaxStaticAddrHtlcFeePercentage: 1,
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MaxStaticAddrHtlcBackupFeePercentage: 1,
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},
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loopIn: loopIn,
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}
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event := f.InitHtlcAction(t.Context(), nil)
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require.Equal(t, OnHtlcInitiated, event)
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require.Nil(t, f.LastActionError)
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require.NotNil(t, server.request)
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_, routeHints, _, _, err := swap.DecodeInvoice(
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mockLnd.ChainParams, server.request.SwapInvoice,
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)
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require.NoError(t, err)
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test.RequireRouteHintsEqual(t, loopIn.RouteHints, routeHints)
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}
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// mockStaticAddressServer captures static-address loop-in requests in tests.
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type mockStaticAddressServer struct {
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swapserverrpc.StaticAddressServerClient
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request *swapserverrpc.ServerStaticAddressLoopInRequest
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response *swapserverrpc.ServerStaticAddressLoopInResponse
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}
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// ServerStaticAddressLoopIn records the request and returns the prepared
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// response.
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func (m *mockStaticAddressServer) ServerStaticAddressLoopIn(
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_ context.Context, in *swapserverrpc.ServerStaticAddressLoopInRequest,
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_ ...grpc.CallOption) (*swapserverrpc.ServerStaticAddressLoopInResponse,
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error) {
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m.request = in
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return m.response, nil
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}
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// testStaticAddressLoopInResponse returns a minimal successful server response
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// for InitHtlcAction tests.
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func testStaticAddressLoopInResponse(
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serverPubKey []byte) *swapserverrpc.ServerStaticAddressLoopInResponse {
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signingInfo := &swapserverrpc.ServerHtlcSigningInfo{
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FeeRate: 1,
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}
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return &swapserverrpc.ServerStaticAddressLoopInResponse{
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HtlcServerPubKey: serverPubKey,
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HtlcExpiry: 1_000,
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StandardHtlcInfo: signingInfo,
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HighFeeHtlcInfo: signingInfo,
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ExtremeFeeHtlcInfo: signingInfo,
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}
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}
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// testStaticAddressRouteHints returns deterministic route hints for static
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// loop-in invoice regression tests.
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func testStaticAddressRouteHints() [][]zpay32.HopHint {
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_, pubKey1 := test.CreateKey(31)
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_, pubKey2 := test.CreateKey(32)
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_, pubKey3 := test.CreateKey(33)
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return [][]zpay32.HopHint{
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{
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{
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NodeID: pubKey1,
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ChannelID: 11,
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FeeBaseMSat: 101,
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FeeProportionalMillionths: 201,
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CLTVExpiryDelta: 31,
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},
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{
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NodeID: pubKey2,
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ChannelID: 12,
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FeeBaseMSat: 102,
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FeeProportionalMillionths: 202,
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CLTVExpiryDelta: 32,
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},
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},
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{
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{
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NodeID: pubKey3,
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ChannelID: 13,
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FeeBaseMSat: 103,
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FeeProportionalMillionths: 203,
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CLTVExpiryDelta: 33,
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},
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},
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}
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}
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// testValidateLoopInContract accepts all server contract parameters in tests.
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func testValidateLoopInContract(_ int32, _ int32) error {
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return nil
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}
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// TestOriginalDepositOutpointUnavailableRequiresMissingTxOut verifies that a
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// present txout does not trigger the RBF cancellation path.
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func TestOriginalDepositOutpointUnavailableRequiresMissingTxOut(t *testing.T) {
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originalOutpoint := wire.OutPoint{
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Hash: chainhash.Hash{1},
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Index: 0,
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}
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txOutChecker := &testTxOutChecker{
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txOut: &wire.TxOut{Value: 10_000},
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}
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f := &FSM{
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cfg: &Config{
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TxOutChecker: txOutChecker,
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},
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loopIn: &StaticAddressLoopIn{
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DepositOutpoints: []string{originalOutpoint.String()},
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},
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}
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unavailable, err := f.originalDepositOutpointUnavailable(t.Context())
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require.NoError(t, err)
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require.False(t, unavailable)
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require.Equal(t, []wire.OutPoint{originalOutpoint}, txOutChecker.outpoints)
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require.Equal(t, []bool{true}, txOutChecker.includeMempool)
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}
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// TestSignHtlcTxActionCancelsWhenOriginalOutpointUnavailable verifies that a
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// pending loop-in is canceled before HTLC signing if GetTxOut with mempool
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// awareness reports that one of the originally selected outpoints is gone.
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func TestSignHtlcTxActionCancelsWhenOriginalOutpointUnavailable(t *testing.T) {
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ctx, cancel := context.WithTimeout(t.Context(), 5*time.Second)
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defer cancel()
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mockLnd := test.NewMockLnd()
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swapHash := lntypes.Hash{9, 8, 7}
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originalOutpoint := wire.OutPoint{
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Hash: chainhash.Hash{1},
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Index: 0,
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}
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loopIn := &StaticAddressLoopIn{
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SwapHash: swapHash,
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DepositOutpoints: []string{originalOutpoint.String()},
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}
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txOutChecker := &testTxOutChecker{}
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cfg := &Config{
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AddressManager: &mockAddressManager{
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params: &script.Parameters{
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ProtocolVersion: version.ProtocolVersion_V0,
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},
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},
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InvoicesClient: mockLnd.LndServices.Invoices,
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TxOutChecker: txOutChecker,
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}
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f, err := NewFSM(ctx, loopIn, cfg, false)
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require.NoError(t, err)
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event := f.SignHtlcTxAction(ctx, nil)
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require.Equal(t, fsm.OnError, event)
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require.ErrorContains(
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t, f.LastActionError, "original deposit outpoint no longer available",
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)
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select {
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case hash := <-mockLnd.FailInvoiceChannel:
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require.Equal(t, swapHash, hash)
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case <-ctx.Done():
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t.Fatalf("invoice was not canceled: %v", ctx.Err())
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}
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require.Equal(t, []wire.OutPoint{originalOutpoint}, txOutChecker.outpoints)
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require.Equal(t, []bool{true}, txOutChecker.includeMempool)
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}
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// TestSignHtlcTxActionDoesNotCancelOnTxOutLookupError verifies that lookup
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// failures are treated as errors, but do not cancel the invoice. The invoice is
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// only canceled when GetTxOut explicitly returns nil for an original outpoint.
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func TestSignHtlcTxActionDoesNotCancelOnTxOutLookupError(t *testing.T) {
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ctx, cancel := context.WithTimeout(t.Context(), 5*time.Second)
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defer cancel()
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mockLnd := test.NewMockLnd()
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swapHash := lntypes.Hash{9, 8, 6}
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originalOutpoint := wire.OutPoint{
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Hash: chainhash.Hash{3},
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Index: 0,
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}
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loopIn := &StaticAddressLoopIn{
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SwapHash: swapHash,
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DepositOutpoints: []string{originalOutpoint.String()},
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}
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txOutChecker := &testTxOutChecker{
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err: errors.New("backend unavailable"),
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}
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cfg := &Config{
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AddressManager: &mockAddressManager{
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params: &script.Parameters{
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ProtocolVersion: version.ProtocolVersion_V0,
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},
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},
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InvoicesClient: mockLnd.LndServices.Invoices,
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TxOutChecker: txOutChecker,
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}
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f, err := NewFSM(ctx, loopIn, cfg, false)
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require.NoError(t, err)
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event := f.SignHtlcTxAction(ctx, nil)
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require.Equal(t, fsm.OnError, event)
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require.ErrorContains(
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t, f.LastActionError, "unable to get txout",
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)
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select {
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case hash := <-mockLnd.FailInvoiceChannel:
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t.Fatalf("invoice should not have been canceled: %x", hash)
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default:
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}
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}
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// TestInitHtlcActionCancelsInvoiceOnServerError verifies that an invoice
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// created before a server-side rejection is canceled immediately.
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func TestInitHtlcActionCancelsInvoiceOnServerError(t *testing.T) {
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ctx, cancel := context.WithTimeout(t.Context(), 5*time.Second)
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defer cancel()
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mockLnd := test.NewMockLnd()
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loopIn := &StaticAddressLoopIn{
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Deposits: []*deposit.Deposit{{
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Value: 200_000,
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}},
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InitiationHeight: uint32(mockLnd.Height),
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InitiationTime: time.Now(),
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PaymentTimeoutSeconds: DefaultPaymentTimeoutSeconds,
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ProtocolVersion: version.ProtocolVersion_V0,
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}
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cfg := &Config{
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AddressManager: &mockAddressManager{
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params: &script.Parameters{
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ProtocolVersion: version.ProtocolVersion_V0,
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},
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},
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DepositManager: &noopDepositManager{},
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WalletKit: mockLnd.WalletKit,
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LndClient: mockLnd.Client,
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InvoicesClient: mockLnd.LndServices.Invoices,
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Server: &initHtlcTestServer{
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loopInErr: errors.New("server rejected swap"),
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},
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}
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f, err := NewFSM(ctx, loopIn, cfg, false)
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require.NoError(t, err)
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// The init step should fail and synchronously trigger deferred invoice
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// cleanup.
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event := f.InitHtlcAction(ctx, nil)
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require.Equal(t, fsm.OnError, event)
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select {
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case hash := <-mockLnd.FailInvoiceChannel:
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require.Equal(t, loopIn.SwapHash, hash)
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case <-ctx.Done():
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t.Fatalf("invoice was not canceled: %v", ctx.Err())
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}
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}
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// TestInitHtlcActionCancelsInvoiceOnFeeGuardFailure verifies that the early
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// fee guard also cancels the pre-created invoice before returning an error.
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func TestInitHtlcActionCancelsInvoiceOnFeeGuardFailure(t *testing.T) {
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ctx, cancel := context.WithTimeout(t.Context(), 5*time.Second)
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defer cancel()
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mockLnd := test.NewMockLnd()
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serverKey, err := btcec.NewPrivateKey()
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require.NoError(t, err)
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loopIn := &StaticAddressLoopIn{
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Deposits: []*deposit.Deposit{{
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Value: 200_000,
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}},
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InitiationHeight: uint32(mockLnd.Height),
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InitiationTime: time.Now(),
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PaymentTimeoutSeconds: DefaultPaymentTimeoutSeconds,
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ProtocolVersion: version.ProtocolVersion_V0,
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}
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cfg := &Config{
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AddressManager: &mockAddressManager{
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params: &script.Parameters{
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ProtocolVersion: version.ProtocolVersion_V0,
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},
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},
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DepositManager: &noopDepositManager{},
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WalletKit: mockLnd.WalletKit,
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LndClient: mockLnd.Client,
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InvoicesClient: mockLnd.LndServices.Invoices,
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Server: &initHtlcTestServer{
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loopInResp: &swapserverrpc.ServerStaticAddressLoopInResponse{
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HtlcServerPubKey: serverKey.PubKey().
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SerializeCompressed(),
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HtlcExpiry: mockLnd.Height +
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DefaultLoopInOnChainCltvDelta,
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StandardHtlcInfo: &swapserverrpc.ServerHtlcSigningInfo{
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FeeRate: 1_000_000,
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},
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HighFeeHtlcInfo: &swapserverrpc.ServerHtlcSigningInfo{},
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ExtremeFeeHtlcInfo: &swapserverrpc.
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ServerHtlcSigningInfo{},
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},
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},
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ValidateLoopInContract: func(int32, int32) error {
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return nil
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},
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MaxStaticAddrHtlcFeePercentage: 0,
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MaxStaticAddrHtlcBackupFeePercentage: 1,
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}
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f, err := NewFSM(ctx, loopIn, cfg, false)
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require.NoError(t, err)
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// The fee guard runs before persistence, so the deferred cleanup must
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// cancel the invoice on this error path as well.
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event := f.InitHtlcAction(ctx, nil)
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require.Equal(t, fsm.OnError, event)
|
|
|
|
select {
|
|
case hash := <-mockLnd.FailInvoiceChannel:
|
|
require.Equal(t, loopIn.SwapHash, hash)
|
|
|
|
case <-ctx.Done():
|
|
t.Fatalf("invoice was not canceled: %v", ctx.Err())
|
|
}
|
|
}
|
|
|
|
// mockAddressManager is a minimal AddressManager implementation used by the
|
|
// test FSM setup.
|
|
type mockAddressManager struct {
|
|
params *script.Parameters
|
|
}
|
|
|
|
// GetStaticAddressParameters returns the configured address parameters.
|
|
func (m *mockAddressManager) GetStaticAddressParameters(_ context.Context) (
|
|
*script.Parameters, error) {
|
|
|
|
return m.params, nil
|
|
}
|
|
|
|
// GetStaticAddress is unused for this test and returns nil.
|
|
func (m *mockAddressManager) GetStaticAddress(_ context.Context) (
|
|
*script.StaticAddress, error) {
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
// noopDepositManager is a stub DepositManager used to satisfy FSM config.
|
|
type noopDepositManager struct{}
|
|
|
|
// GetAllDeposits implements DepositManager with a no-op.
|
|
func (n *noopDepositManager) GetAllDeposits(_ context.Context) (
|
|
[]*deposit.Deposit, error) {
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
// AllStringOutpointsActiveDeposits implements DepositManager with a no-op.
|
|
func (n *noopDepositManager) AllStringOutpointsActiveDeposits(
|
|
_ []string, _ fsm.StateType) ([]*deposit.Deposit, bool) {
|
|
|
|
return nil, false
|
|
}
|
|
|
|
// TransitionDeposits implements DepositManager with a no-op.
|
|
func (n *noopDepositManager) TransitionDeposits(context.Context,
|
|
[]*deposit.Deposit, fsm.EventType, fsm.StateType) error {
|
|
|
|
return nil
|
|
}
|
|
|
|
// DepositsForOutpoints implements DepositManager with a no-op.
|
|
func (n *noopDepositManager) DepositsForOutpoints(context.Context, []string,
|
|
bool) ([]*deposit.Deposit, error) {
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
// GetActiveDepositsInState implements DepositManager with a no-op.
|
|
func (n *noopDepositManager) GetActiveDepositsInState(fsm.StateType) (
|
|
[]*deposit.Deposit, error) {
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
type testTxOutChecker struct {
|
|
txOut *wire.TxOut
|
|
err error
|
|
|
|
outpoints []wire.OutPoint
|
|
includeMempool []bool
|
|
}
|
|
|
|
// GetTxOut records lookup parameters and returns the configured result.
|
|
func (t *testTxOutChecker) GetTxOut(_ context.Context,
|
|
outpoint wire.OutPoint, includeMempool bool) (*wire.TxOut, error) {
|
|
|
|
t.outpoints = append(t.outpoints, outpoint)
|
|
t.includeMempool = append(t.includeMempool, includeMempool)
|
|
|
|
return t.txOut, t.err
|
|
}
|
|
|
|
// initHtlcTestServer lets InitHtlcAction tests inject a deterministic server
|
|
// response without standing up the full gRPC client.
|
|
type initHtlcTestServer struct {
|
|
swapserverrpc.StaticAddressServerClient
|
|
|
|
loopInResp *swapserverrpc.ServerStaticAddressLoopInResponse
|
|
loopInErr error
|
|
}
|
|
|
|
// ServerStaticAddressLoopIn returns the canned response configured by the test.
|
|
func (s *initHtlcTestServer) ServerStaticAddressLoopIn(context.Context,
|
|
*swapserverrpc.ServerStaticAddressLoopInRequest, ...grpc.CallOption,
|
|
) (*swapserverrpc.ServerStaticAddressLoopInResponse, error) {
|
|
|
|
return s.loopInResp, s.loopInErr
|
|
}
|
|
|
|
// PushStaticAddressHtlcSigs accepts the abandonment signal used by error-path
|
|
// tests without adding additional assertions.
|
|
func (s *initHtlcTestServer) PushStaticAddressHtlcSigs(context.Context,
|
|
*swapserverrpc.PushStaticAddressHtlcSigsRequest, ...grpc.CallOption,
|
|
) (*swapserverrpc.PushStaticAddressHtlcSigsResponse, error) {
|
|
|
|
return &swapserverrpc.PushStaticAddressHtlcSigsResponse{}, nil
|
|
}
|