diff --git a/client.go b/client.go index a7d2f86..a58a2d9 100644 --- a/client.go +++ b/client.go @@ -175,9 +175,10 @@ func (s *Client) FetchSwaps() ([]*SwapInfo, error) { for _, swp := range loopOutSwaps { htlc, err := swap.NewHtlc( - swap.HtlcV1, swp.Contract.CltvExpiry, - swp.Contract.SenderKey, swp.Contract.ReceiverKey, - swp.Hash, swap.HtlcP2WSH, s.lndServices.ChainParams, + GetHtlcScriptVersion(swp.Contract.ProtocolVersion), + swp.Contract.CltvExpiry, swp.Contract.SenderKey, + swp.Contract.ReceiverKey, swp.Hash, swap.HtlcP2WSH, + s.lndServices.ChainParams, ) if err != nil { return nil, err @@ -195,18 +196,20 @@ func (s *Client) FetchSwaps() ([]*SwapInfo, error) { for _, swp := range loopInSwaps { htlcNP2WSH, err := swap.NewHtlc( - swap.HtlcV1, swp.Contract.CltvExpiry, - swp.Contract.SenderKey, swp.Contract.ReceiverKey, - swp.Hash, swap.HtlcNP2WSH, s.lndServices.ChainParams, + GetHtlcScriptVersion(swp.Contract.ProtocolVersion), + swp.Contract.CltvExpiry, swp.Contract.SenderKey, + swp.Contract.ReceiverKey, swp.Hash, swap.HtlcNP2WSH, + s.lndServices.ChainParams, ) if err != nil { return nil, err } htlcP2WSH, err := swap.NewHtlc( - swap.HtlcV1, swp.Contract.CltvExpiry, - swp.Contract.SenderKey, swp.Contract.ReceiverKey, - swp.Hash, swap.HtlcP2WSH, s.lndServices.ChainParams, + GetHtlcScriptVersion(swp.Contract.ProtocolVersion), + swp.Contract.CltvExpiry, swp.Contract.SenderKey, + swp.Contract.ReceiverKey, swp.Hash, swap.HtlcP2WSH, + s.lndServices.ChainParams, ) if err != nil { return nil, err diff --git a/loopd/view.go b/loopd/view.go index 8fd60a2..ebd221d 100644 --- a/loopd/view.go +++ b/loopd/view.go @@ -50,7 +50,7 @@ func viewOut(swapClient *loop.Client, chainParams *chaincfg.Params) error { for _, s := range swaps { htlc, err := swap.NewHtlc( - swap.HtlcV1, + loop.GetHtlcScriptVersion(s.Contract.ProtocolVersion), s.Contract.CltvExpiry, s.Contract.SenderKey, s.Contract.ReceiverKey, @@ -102,7 +102,7 @@ func viewIn(swapClient *loop.Client, chainParams *chaincfg.Params) error { for _, s := range swaps { htlc, err := swap.NewHtlc( - swap.HtlcV1, + loop.GetHtlcScriptVersion(s.Contract.ProtocolVersion), s.Contract.CltvExpiry, s.Contract.SenderKey, s.Contract.ReceiverKey, diff --git a/loopdb/protocol_version.go b/loopdb/protocol_version.go index 1fc7f54..7bd04ab 100644 --- a/loopdb/protocol_version.go +++ b/loopdb/protocol_version.go @@ -31,13 +31,17 @@ const ( // propose a cltv expiry height for loop out. ProtocolVersionUserExpiryLoopOut ProtocolVersion = 4 + // ProtocolVersionHtlcV2 indicates that the client will use the new + // HTLC v2 scrips for swaps. + ProtocolVersionHtlcV2 ProtocolVersion = 5 + // ProtocolVersionUnrecorded is set for swaps were created before we // started saving protocol version with swaps. ProtocolVersionUnrecorded ProtocolVersion = math.MaxUint32 // CurrentRpcProtocolVersion defines the version of the RPC protocol // that is currently supported by the loop client. - CurrentRPCProtocolVersion = looprpc.ProtocolVersion_USER_EXPIRY_LOOP_OUT + CurrentRPCProtocolVersion = looprpc.ProtocolVersion_HTLC_V2 // CurrentInteranlProtocolVersionInternal defines the RPC current // protocol in the internal representation. @@ -70,6 +74,9 @@ func (p ProtocolVersion) String() string { case ProtocolVersionUserExpiryLoopOut: return "User Expiry Loop Out" + case ProtocolVersionHtlcV2: + return "HTLC V2" + default: return "Unknown" } diff --git a/loopdb/protocol_version_test.go b/loopdb/protocol_version_test.go index 7f8008f..7fb7d0e 100644 --- a/loopdb/protocol_version_test.go +++ b/loopdb/protocol_version_test.go @@ -19,6 +19,7 @@ func TestProtocolVersionSanity(t *testing.T) { ProtocolVersionSegwitLoopIn, ProtocolVersionPreimagePush, ProtocolVersionUserExpiryLoopOut, + ProtocolVersionHtlcV2, } rpcVersions := [...]looprpc.ProtocolVersion{ @@ -27,6 +28,7 @@ func TestProtocolVersionSanity(t *testing.T) { looprpc.ProtocolVersion_NATIVE_SEGWIT_LOOP_IN, looprpc.ProtocolVersion_PREIMAGE_PUSH_LOOP_OUT, looprpc.ProtocolVersion_USER_EXPIRY_LOOP_OUT, + looprpc.ProtocolVersion_HTLC_V2, } require.Equal(t, len(versions), len(rpcVersions)) diff --git a/loopin.go b/loopin.go index 0b818cb..5896a6a 100644 --- a/loopin.go +++ b/loopin.go @@ -172,11 +172,13 @@ func newLoopInSwap(globalCtx context.Context, cfg *swapConfig, MaxMinerFee: request.MaxMinerFee, MaxSwapFee: request.MaxSwapFee, Label: request.Label, + ProtocolVersion: loopdb.CurrentInternalProtocolVersion, }, } swapKit := newSwapKit( - swapHash, swap.TypeIn, cfg, &contract.SwapContract, + swapHash, swap.TypeIn, + cfg, &contract.SwapContract, ) swapKit.lastUpdateTime = initiationTime @@ -217,7 +219,8 @@ func resumeLoopInSwap(reqContext context.Context, cfg *swapConfig, log.Infof("Resuming loop in swap %v", hash) swapKit := newSwapKit( - hash, swap.TypeIn, cfg, &pend.Contract.SwapContract, + hash, swap.TypeIn, cfg, + &pend.Contract.SwapContract, ) swap := &loopInSwap{ diff --git a/loopout.go b/loopout.go index 5042e21..120705d 100644 --- a/loopout.go +++ b/loopout.go @@ -171,12 +171,14 @@ func newLoopOutSwap(globalCtx context.Context, cfg *swapConfig, MaxMinerFee: request.MaxMinerFee, MaxSwapFee: request.MaxSwapFee, Label: request.Label, + ProtocolVersion: loopdb.CurrentInternalProtocolVersion, }, OutgoingChanSet: chanSet, } swapKit := newSwapKit( - swapHash, swap.TypeOut, cfg, &contract.SwapContract, + swapHash, swap.TypeOut, + cfg, &contract.SwapContract, ) swapKit.lastUpdateTime = initiationTime @@ -223,7 +225,8 @@ func resumeLoopOutSwap(reqContext context.Context, cfg *swapConfig, log.Infof("Resuming loop out swap %v", hash) swapKit := newSwapKit( - hash, swap.TypeOut, cfg, &pend.Contract.SwapContract, + hash, swap.TypeOut, cfg, + &pend.Contract.SwapContract, ) // Create the htlc. diff --git a/looprpc/server.pb.go b/looprpc/server.pb.go index 8d1e4a1..15fc74d 100644 --- a/looprpc/server.pb.go +++ b/looprpc/server.pb.go @@ -49,6 +49,8 @@ const ( ProtocolVersion_PREIMAGE_PUSH_LOOP_OUT ProtocolVersion = 3 // The client will propose a cltv expiry height for loop out. ProtocolVersion_USER_EXPIRY_LOOP_OUT ProtocolVersion = 4 + // The client will use the new v2 HTLC scripts. + ProtocolVersion_HTLC_V2 ProtocolVersion = 5 ) var ProtocolVersion_name = map[int32]string{ @@ -57,6 +59,7 @@ var ProtocolVersion_name = map[int32]string{ 2: "NATIVE_SEGWIT_LOOP_IN", 3: "PREIMAGE_PUSH_LOOP_OUT", 4: "USER_EXPIRY_LOOP_OUT", + 5: "HTLC_V2", } var ProtocolVersion_value = map[string]int32{ @@ -65,6 +68,7 @@ var ProtocolVersion_value = map[string]int32{ "NATIVE_SEGWIT_LOOP_IN": 2, "PREIMAGE_PUSH_LOOP_OUT": 3, "USER_EXPIRY_LOOP_OUT": 4, + "HTLC_V2": 5, } func (x ProtocolVersion) String() string { @@ -1185,87 +1189,88 @@ func init() { func init() { proto.RegisterFile("server.proto", fileDescriptor_ad098daeda4239f7) } var fileDescriptor_ad098daeda4239f7 = []byte{ - // 1275 bytes of a gzipped FileDescriptorProto + // 1285 bytes of a gzipped FileDescriptorProto 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x56, 0xdd, 0x72, 0xdb, 0x44, - 0x14, 0x46, 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0xb3, 0xa3, 0x47, 0xb9, 0xe0, 0xe4, 0xa8, 0xed, 0x6b, 0xb2, 0x82, 0xac, + 0x9d, 0xf4, 0x16, 0xb7, 0x9a, 0xdf, 0x5b, 0x86, 0xaa, 0x7a, 0x13, 0x44, 0x9c, 0x7a, 0x96, 0xf2, + 0xe4, 0xac, 0x2d, 0xa2, 0xe6, 0xec, 0xf5, 0x7c, 0xd7, 0x6e, 0xec, 0x2e, 0x22, 0xf2, 0xad, 0xf5, + 0x99, 0x84, 0x28, 0x6c, 0xe6, 0x3b, 0xe1, 0x47, 0xd4, 0xf9, 0x32, 0xbf, 0xce, 0x82, 0x99, 0x3e, + 0x93, 0x4e, 0xca, 0xfc, 0xa3, 0xf0, 0xf5, 0xbf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xbf, 0xd7, 0x01, + 0x1e, 0x88, 0x0f, 0x00, 0x00, } // Reference imports to suppress errors if they are not otherwise used. diff --git a/looprpc/server.proto b/looprpc/server.proto index dec7d89..1bf8e75 100644 --- a/looprpc/server.proto +++ b/looprpc/server.proto @@ -57,6 +57,9 @@ enum ProtocolVersion { // The client will propose a cltv expiry height for loop out. USER_EXPIRY_LOOP_OUT = 4; + + // The client will use the new v2 HTLC scripts. + HTLC_V2 = 5; } message ServerLoopOutRequest { diff --git a/swap.go b/swap.go index 1ca50fd..193bdde 100644 --- a/swap.go +++ b/swap.go @@ -48,10 +48,30 @@ func newSwapKit(hash lntypes.Hash, swapType swap.Type, cfg *swapConfig, } } +// GetHtlcScriptVersion returns the correct HTLC script version for the passed +// protocol version. +func GetHtlcScriptVersion( + protocolVersion loopdb.ProtocolVersion) swap.ScriptVersion { + + if protocolVersion != loopdb.ProtocolVersionUnrecorded && + protocolVersion >= loopdb.ProtocolVersionHtlcV2 { + + // Use HTLC v2 script only if we know the swap was initiated + // with a client that supports HTLC v2. Unrecorded protocol + // version implies that there was no protocol version stored + // along side a serialized swap that we're resuming in which + // case the swap was initiated with HTLC v1 script. + return swap.HtlcV2 + } + + return swap.HtlcV1 +} + // getHtlc composes and returns the on-chain swap script. func (s *swapKit) getHtlc(outputType swap.HtlcOutputType) (*swap.Htlc, error) { return swap.NewHtlc( - swap.HtlcV1, s.contract.CltvExpiry, s.contract.SenderKey, + GetHtlcScriptVersion(s.contract.ProtocolVersion), + s.contract.CltvExpiry, s.contract.SenderKey, s.contract.ReceiverKey, s.hash, outputType, s.swapConfig.lnd.ChainParams, )