lncfg: add protocol config option for script enforced lease support

lncfg/protocol.go

@@ -24,6 +24,11 @@ type ProtocolOptions struct {
 	// NoAnchors should be set if we don't want to support opening or accepting
 	// channels having the anchor commitment type.
 	NoAnchors bool `long:"no-anchors" description:"disable support for anchor commitments"`
+
+	// NoScriptEnforcedLease should be set if we don't want to support
+	// opening or accepting channels having the script enforced commitment
+	// type for leased channel.
+	NoScriptEnforcedLease bool `long:"no-script-enforced-lease" description:"disable support for script enforced lease commitments"`
 }
 
 // Wumbo returns true if lnd should permit the creation and acceptance of wumbo
@@ -37,3 +42,9 @@ func (l *ProtocolOptions) Wumbo() bool {
 func (l *ProtocolOptions) NoAnchorCommitments() bool {
 	return l.NoAnchors
 }
+
+// NoScriptEnforcementLease returns true if we have disabled support for the
+// script enforcement commitment type for leased channels.
+func (l *ProtocolOptions) NoScriptEnforcementLease() bool {
+	return l.NoScriptEnforcedLease
+}

lncfg/protocol_rpctest.go

@@ -24,6 +24,12 @@ type ProtocolOptions struct {
 	// Anchors enables anchor commitments.
 	// TODO(halseth): transition itests to anchors instead!
 	Anchors bool `long:"anchors" description:"enable support for anchor commitments"`
+
+	// ScriptEnforcedLease enables script enforced commitments for channel
+	// leases.
+	//
+	// TODO: Move to experimental?
+	ScriptEnforcedLease bool `long:"script-enforced-lease" description:"enable support for script enforced lease commitments"`
 }
 
 // Wumbo returns true if lnd should permit the creation and acceptance of wumbo
@@ -37,3 +43,9 @@ func (l *ProtocolOptions) Wumbo() bool {
 func (l *ProtocolOptions) NoAnchorCommitments() bool {
 	return !l.Anchors
 }
+
+// NoScriptEnforcementLease returns true if we have disabled support for the
+// script enforcement commitment type for leased channels.
+func (l *ProtocolOptions) NoScriptEnforcementLease() bool {
+	return !l.ScriptEnforcedLease
+}

sample-lnd.conf

@@ -1101,6 +1101,12 @@ litecoin.node=ltcd
 ; (Deprecates the previous "protocol.anchors" setting.)
 ; protocol.no-anchors=true
 
+; Set to disable support for script enforced lease channel commitments. If not
+; set, lnd will accept these channels by default if the remote channel party
+; proposes them. Note that lnd will require 1 UTXO to be reserved for this
+; channel type if it is enabled.
+; protocol.no-script-enforced-lease=true
+
 
 [db]