rename initialchannelid to aliasScid and make optional

cln/cln_client.go

@@ -198,7 +198,7 @@ func (c *ClnClient) GetChannel(peerID []byte, channelPoint wire.OutPoint) (*ligh
 	pubkey := hex.EncodeToString(peerID)
 	channels, err := client.GetPeerChannels(pubkey)
 	if err != nil {
-		log.Printf("CLN: client.GetPeer(%s) error: %v", pubkey, err)
+		log.Printf("CLN: client.GetPeerChannels(%s) error: %v", pubkey, err)
 		return nil, err
 	}
 
@@ -206,20 +206,15 @@ func (c *ClnClient) GetChannel(peerID []byte, channelPoint wire.OutPoint) (*ligh
 	for _, c := range channels {
 		log.Printf("getChannel destination: %s, Short channel id: %v, local alias: %v , FundingTxID:%v, State:%v ", pubkey, c.ShortChannelId, c.Alias.Local, c.FundingTxId, c.State)
 		if slices.Contains(OPEN_STATUSES, c.State) && c.FundingTxId == fundingTxID {
-			confirmedChanID, err := lightning.NewShortChannelIDFromString(c.ShortChannelId)
+
+			aliasScid, confirmedScid, err := mapScidsFromChannel(c)
 			if err != nil {
-				fmt.Printf("NewShortChannelIDFromString %v error: %v", c.ShortChannelId, err)
-				return nil, err
-			}
-			initialChanID, err := lightning.NewShortChannelIDFromString(c.Alias.Local)
-			if err != nil {
-				fmt.Printf("NewShortChannelIDFromString %v error: %v", c.Alias.Local, err)
 				return nil, err
 			}
 			return &lightning.GetChannelResult{
-				InitialChannelID:   *initialChanID,
-				ConfirmedChannelID: *confirmedChanID,
-				HtlcMinimumMsat:    c.MinimumHtlcOutMsat.MSat(),
+				AliasScid:       aliasScid,
+				ConfirmedScid:   confirmedScid,
+				HtlcMinimumMsat: c.MinimumHtlcOutMsat.MSat(),
 			}, nil
 		}
 	}
@@ -324,3 +319,24 @@ func (c *ClnClient) WaitOnline(peerID []byte, deadline time.Time) error {
 func (c *ClnClient) WaitChannelActive(peerID []byte, deadline time.Time) error {
 	return nil
 }
+
+func mapScidsFromChannel(c *glightning.PeerChannel) (*lightning.ShortChannelID, *lightning.ShortChannelID, error) {
+	var confirmedScid *lightning.ShortChannelID
+	var aliasScid *lightning.ShortChannelID
+	var err error
+	if c.ShortChannelId != "" {
+		confirmedScid, err = lightning.NewShortChannelIDFromString(c.ShortChannelId)
+		if err != nil {
+			return nil, nil, fmt.Errorf("failed to parse scid '%s': %w", c.ShortChannelId, err)
+		}
+	}
+
+	if c.Alias != nil && c.Alias.Local != "" {
+		aliasScid, err = lightning.NewShortChannelIDFromString(c.Alias.Local)
+		if err != nil {
+			return nil, nil, fmt.Errorf("failed to parse scid '%s': %w", c.Alias.Local, err)
+		}
+	}
+
+	return aliasScid, confirmedScid, nil
+}

interceptor/intercept_handler.go

@@ -224,11 +224,18 @@ func (i *Interceptor) Intercept(req common.InterceptRequest) common.InterceptRes
 		for {
 			chanResult, _ := i.client.GetChannel(destination, *channelPoint)
 			if chanResult != nil {
-				log.Printf("paymentHash: %s, channel opened successfully alias: %v, confirmed: %v", reqPaymentHashStr, chanResult.InitialChannelID.ToString(), chanResult.ConfirmedChannelID.ToString())
+				log.Printf("paymentHash: %s, channel opened successfully alias: '%v', confirmed: '%v'", reqPaymentHashStr, chanResult.AliasScid.ToString(), chanResult.ConfirmedScid.ToString())
 
-				channelID := chanResult.ConfirmedChannelID
-				if uint64(channelID) == 0 {
-					channelID = chanResult.InitialChannelID
+				var scid *lightning.ShortChannelID
+				if chanResult.ConfirmedScid == nil {
+					if chanResult.AliasScid == nil {
+						log.Printf("Error: GetChannel: Both confirmed scid and alias scid are nil: %+v", chanResult)
+						<-time.After(1 * time.Second)
+						continue
+					}
+					scid = chanResult.AliasScid
+				} else {
+					scid = chanResult.ConfirmedScid
 				}
 
 				useLegacyOnionBlob := slices.Contains(i.config.LegacyOnionTokens, token)
@@ -236,7 +243,7 @@ func (i *Interceptor) Intercept(req common.InterceptRequest) common.InterceptRes
 					Action:             common.INTERCEPT_RESUME_WITH_ONION,
 					Destination:        destination,
 					ChannelPoint:       channelPoint,
-					Scid:               channelID,
+					Scid:               *scid,
 					PaymentSecret:      paymentSecret,
 					AmountMsat:         uint64(amt),
 					TotalAmountMsat:    uint64(outgoingAmountMsat),
@@ -244,7 +251,7 @@ func (i *Interceptor) Intercept(req common.InterceptRequest) common.InterceptRes
 				}, nil
 			}
 
-			log.Printf("paymentHash: %s, waiting for channel to get opened.... %v", reqPaymentHashStr, destination)
+			log.Printf("paymentHash: %s, waiting for channel to get opened... %x", reqPaymentHashStr, destination)
 			if time.Now().After(deadline) {
 				log.Printf("paymentHash: %s, Stop retrying getChannel(%v, %v)", reqPaymentHashStr, destination, channelPoint.String())
 				break

lightning/client.go

@@ -12,9 +12,9 @@ type GetInfoResult struct {
 }
 
 type GetChannelResult struct {
-	InitialChannelID   ShortChannelID
-	ConfirmedChannelID ShortChannelID
-	HtlcMinimumMsat    uint64
+	AliasScid       *ShortChannelID
+	ConfirmedScid   *ShortChannelID
+	HtlcMinimumMsat uint64
 }
 
 type OpenChannelRequest struct {

lnd/client.go

@@ -13,7 +13,6 @@ import (
 	"github.com/breez/lspd/lightning"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/wire"
-	"github.com/lightningnetwork/lnd/htlcswitch/hop"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/chainrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
@@ -298,17 +297,11 @@ func (c *LndClient) GetChannel(peerID []byte, channelPoint wire.OutPoint) (*ligh
 	for _, c := range r.Channels {
 		log.Printf("getChannel(%x): %v", peerID, c.ChanId)
 		if c.ChannelPoint == channelPointStr && c.Active {
-			confirmedChanId := c.ChanId
-			if c.ZeroConf {
-				confirmedChanId = c.ZeroConfConfirmedScid
-				if confirmedChanId == hop.Source.ToUint64() {
-					confirmedChanId = 0
-				}
-			}
+			aliasScid, confirmedScid := mapScidsFromChannel(c)
 			return &lightning.GetChannelResult{
-				InitialChannelID:   lightning.ShortChannelID(c.ChanId),
-				ConfirmedChannelID: lightning.ShortChannelID(confirmedChanId),
-				HtlcMinimumMsat:    c.LocalConstraints.MinHtlcMsat,
+				AliasScid:       aliasScid,
+				ConfirmedScid:   confirmedScid,
+				HtlcMinimumMsat: c.LocalConstraints.MinHtlcMsat,
 			}, nil
 		}
 	}
@@ -498,3 +491,21 @@ func (c *LndClient) WaitChannelActive(peerID []byte, deadline time.Time) error {
 		return fmt.Errorf("deadline exceeded")
 	}
 }
+
+func mapScidsFromChannel(c *lnrpc.Channel) (*lightning.ShortChannelID, *lightning.ShortChannelID) {
+	var alias *lightning.ShortChannelID
+	var confirmedScid *lightning.ShortChannelID
+	if c.ZeroConf {
+		if c.ZeroConfConfirmedScid != 0 {
+			confirmedScid = (*lightning.ShortChannelID)(&c.ZeroConfConfirmedScid)
+		}
+		alias = (*lightning.ShortChannelID)(&c.ChanId)
+	} else {
+		confirmedScid = (*lightning.ShortChannelID)(&c.ChanId)
+		if len(c.AliasScids) > 0 {
+			alias = (*lightning.ShortChannelID)(&c.AliasScids[0])
+		}
+	}
+
+	return alias, confirmedScid
+}

lsps2/intercept_handler.go

@@ -516,18 +516,25 @@ func (i *Interceptor) ensureChannelOpen(payment *paymentState) {
 		log.Printf(
 			"Got new channel for forward successfully. scid alias: %v, "+
 				"confirmed scid: %v",
-			chanResult.InitialChannelID.ToString(),
-			chanResult.ConfirmedChannelID.ToString(),
+			chanResult.AliasScid.ToString(),
+			chanResult.ConfirmedScid.ToString(),
 		)
 
-		scid := chanResult.ConfirmedChannelID
-		if uint64(scid) == 0 {
-			scid = chanResult.InitialChannelID
+		var scid *lightning.ShortChannelID
+		if chanResult.ConfirmedScid == nil {
+			if chanResult.AliasScid == nil {
+				log.Printf("Error: GetChannel: Both confirmed scid and alias scid are nil: %+v", chanResult)
+				<-time.After(1 * time.Second)
+				continue
+			}
+			scid = chanResult.AliasScid
+		} else {
+			scid = chanResult.ConfirmedScid
 		}
 
 		i.paymentChanOpened <- &paymentChanOpenedEvent{
 			paymentId:       payment.id,
-			scid:            scid,
+			scid:            *scid,
 			channelPoint:    payment.registration.ChannelPoint,
 			htlcMinimumMsat: chanResult.HtlcMinimumMsat,
 		}

lsps2/intercept_test.go

@@ -31,9 +31,9 @@ var defaultChainHash = chainhash.Hash([32]byte{})
 var defaultOutPoint = wire.NewOutPoint(&defaultChainHash, 0)
 var defaultChannelScid uint64 = 456
 var defaultChanResult = &lightning.GetChannelResult{
-	HtlcMinimumMsat:    defaultConfig().HtlcMinimumMsat,
-	InitialChannelID:   lightning.ShortChannelID(defaultChannelScid),
-	ConfirmedChannelID: lightning.ShortChannelID(defaultChannelScid),
+	HtlcMinimumMsat: defaultConfig().HtlcMinimumMsat,
+	AliasScid:       (*lightning.ShortChannelID)(&defaultChannelScid),
+	ConfirmedScid:   (*lightning.ShortChannelID)(&defaultChannelScid),
 }
 
 func defaultOpeningFeeParams() common.OpeningFeeParams {