Add checkChannels grpc function

email.go

@@ -82,6 +82,48 @@ func sendEmail(to, cc, from, content, subject string) error {
 	return nil
 }
 
+func sendChannelMismatchNotification(nodeID string, notFakeChannels, closedChannels map[string]uint64) error {
+	var html bytes.Buffer
+
+	tpl := `
+	<h2>NodeID: {{ .NodeID }}</h2>
+	{{ if .NotFakeChannels }}<h3>Channels not fake anynmore</h3><table>
+	<tr><th>Channel Point</th><th>Height Hint</th></tr>
+	{{ range $key, $value := .NotFakeChannels }}<tr><td>{{ $key }}</td><td>{{ $value }}</td></tr>{{ end }}
+	</table>{{ end }}
+	{{ if .ClosedChannels }}<h3>Closed Channels</h3><table>
+	<tr><th>Channel Point</th><th>Height Hint</th></tr>
+	{{ range $key, $value := .ClosedChannels }}<tr><td>{{ $key }}</td><td>{{ $value }}</td></tr>{{ end }}
+	</table>{{ end }}
+	`
+	t, err := template.New("ChannelMismatchEmail").Parse(tpl)
+	if err != nil {
+		return err
+	}
+
+	if err := t.Execute(&html, struct {
+		NodeID          string
+		NotFakeChannels map[string]uint64
+		ClosedChannels  map[string]uint64
+	}{nodeID, notFakeChannels, closedChannels}); err != nil {
+		return err
+	}
+
+	err = sendEmail(
+		os.Getenv("CHANNELMISMATCH_NOTIFICATION_TO"),
+		os.Getenv("CHANNELMISMATCH_NOTIFICATION_CC"),
+		os.Getenv("CHANNELMISMATCH_NOTIFICATION_FROM"),
+		html.String(),
+		"Channel(s) Mismatch",
+	)
+	if err != nil {
+		log.Printf("Error sending open channel email: %v", err)
+		return err
+	}
+
+	return nil
+}
+
 func sendOpenChannelEmailNotification(
 	paymentHash []byte, incomingAmountMsat int64,
 	destination []byte, capacity int64,

rpc/lspd.pb.go

@@ -426,6 +426,202 @@ func (m *PaymentInformation) GetOutgoingAmountMsat() int64 {
 	return 0
 }
 
+type Encrypted struct {
+	Data                 []byte   `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Encrypted) Reset()         { *m = Encrypted{} }
+func (m *Encrypted) String() string { return proto.CompactTextString(m) }
+func (*Encrypted) ProtoMessage()    {}
+func (*Encrypted) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c69a0f5a734bca26, []int{7}
+}
+
+func (m *Encrypted) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Encrypted.Unmarshal(m, b)
+}
+func (m *Encrypted) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Encrypted.Marshal(b, m, deterministic)
+}
+func (m *Encrypted) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Encrypted.Merge(m, src)
+}
+func (m *Encrypted) XXX_Size() int {
+	return xxx_messageInfo_Encrypted.Size(m)
+}
+func (m *Encrypted) XXX_DiscardUnknown() {
+	xxx_messageInfo_Encrypted.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Encrypted proto.InternalMessageInfo
+
+func (m *Encrypted) GetData() []byte {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
+type Signed struct {
+	Data                 []byte   `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+	Pubkey               []byte   `protobuf:"bytes,2,opt,name=pubkey,proto3" json:"pubkey,omitempty"`
+	Signature            []byte   `protobuf:"bytes,3,opt,name=signature,proto3" json:"signature,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Signed) Reset()         { *m = Signed{} }
+func (m *Signed) String() string { return proto.CompactTextString(m) }
+func (*Signed) ProtoMessage()    {}
+func (*Signed) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c69a0f5a734bca26, []int{8}
+}
+
+func (m *Signed) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Signed.Unmarshal(m, b)
+}
+func (m *Signed) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Signed.Marshal(b, m, deterministic)
+}
+func (m *Signed) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Signed.Merge(m, src)
+}
+func (m *Signed) XXX_Size() int {
+	return xxx_messageInfo_Signed.Size(m)
+}
+func (m *Signed) XXX_DiscardUnknown() {
+	xxx_messageInfo_Signed.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Signed proto.InternalMessageInfo
+
+func (m *Signed) GetData() []byte {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
+func (m *Signed) GetPubkey() []byte {
+	if m != nil {
+		return m.Pubkey
+	}
+	return nil
+}
+
+func (m *Signed) GetSignature() []byte {
+	if m != nil {
+		return m.Signature
+	}
+	return nil
+}
+
+type CheckChannelsRequest struct {
+	EncryptPubkey        []byte            `protobuf:"bytes,1,opt,name=encrypt_pubkey,json=encryptPubkey,proto3" json:"encrypt_pubkey,omitempty"`
+	FakeChannels         map[string]uint64 `protobuf:"bytes,2,rep,name=fake_channels,json=fakeChannels,proto3" json:"fake_channels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+	WaitingCloseChannels map[string]uint64 `protobuf:"bytes,3,rep,name=waiting_close_channels,json=waitingCloseChannels,proto3" json:"waiting_close_channels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *CheckChannelsRequest) Reset()         { *m = CheckChannelsRequest{} }
+func (m *CheckChannelsRequest) String() string { return proto.CompactTextString(m) }
+func (*CheckChannelsRequest) ProtoMessage()    {}
+func (*CheckChannelsRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c69a0f5a734bca26, []int{9}
+}
+
+func (m *CheckChannelsRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CheckChannelsRequest.Unmarshal(m, b)
+}
+func (m *CheckChannelsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CheckChannelsRequest.Marshal(b, m, deterministic)
+}
+func (m *CheckChannelsRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CheckChannelsRequest.Merge(m, src)
+}
+func (m *CheckChannelsRequest) XXX_Size() int {
+	return xxx_messageInfo_CheckChannelsRequest.Size(m)
+}
+func (m *CheckChannelsRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_CheckChannelsRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CheckChannelsRequest proto.InternalMessageInfo
+
+func (m *CheckChannelsRequest) GetEncryptPubkey() []byte {
+	if m != nil {
+		return m.EncryptPubkey
+	}
+	return nil
+}
+
+func (m *CheckChannelsRequest) GetFakeChannels() map[string]uint64 {
+	if m != nil {
+		return m.FakeChannels
+	}
+	return nil
+}
+
+func (m *CheckChannelsRequest) GetWaitingCloseChannels() map[string]uint64 {
+	if m != nil {
+		return m.WaitingCloseChannels
+	}
+	return nil
+}
+
+type CheckChannelsReply struct {
+	NotFakeChannels      map[string]uint64 `protobuf:"bytes,1,rep,name=not_fake_channels,json=notFakeChannels,proto3" json:"not_fake_channels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+	ClosedChannels       map[string]uint64 `protobuf:"bytes,2,rep,name=closed_channels,json=closedChannels,proto3" json:"closed_channels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *CheckChannelsReply) Reset()         { *m = CheckChannelsReply{} }
+func (m *CheckChannelsReply) String() string { return proto.CompactTextString(m) }
+func (*CheckChannelsReply) ProtoMessage()    {}
+func (*CheckChannelsReply) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c69a0f5a734bca26, []int{10}
+}
+
+func (m *CheckChannelsReply) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CheckChannelsReply.Unmarshal(m, b)
+}
+func (m *CheckChannelsReply) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CheckChannelsReply.Marshal(b, m, deterministic)
+}
+func (m *CheckChannelsReply) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CheckChannelsReply.Merge(m, src)
+}
+func (m *CheckChannelsReply) XXX_Size() int {
+	return xxx_messageInfo_CheckChannelsReply.Size(m)
+}
+func (m *CheckChannelsReply) XXX_DiscardUnknown() {
+	xxx_messageInfo_CheckChannelsReply.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CheckChannelsReply proto.InternalMessageInfo
+
+func (m *CheckChannelsReply) GetNotFakeChannels() map[string]uint64 {
+	if m != nil {
+		return m.NotFakeChannels
+	}
+	return nil
+}
+
+func (m *CheckChannelsReply) GetClosedChannels() map[string]uint64 {
+	if m != nil {
+		return m.ClosedChannels
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*ChannelInformationRequest)(nil), "lspd.ChannelInformationRequest")
 	proto.RegisterType((*ChannelInformationReply)(nil), "lspd.ChannelInformationReply")
@@ -434,6 +630,14 @@ func init() {
 	proto.RegisterType((*RegisterPaymentRequest)(nil), "lspd.RegisterPaymentRequest")
 	proto.RegisterType((*RegisterPaymentReply)(nil), "lspd.RegisterPaymentReply")
 	proto.RegisterType((*PaymentInformation)(nil), "lspd.PaymentInformation")
+	proto.RegisterType((*Encrypted)(nil), "lspd.Encrypted")
+	proto.RegisterType((*Signed)(nil), "lspd.Signed")
+	proto.RegisterType((*CheckChannelsRequest)(nil), "lspd.CheckChannelsRequest")
+	proto.RegisterMapType((map[string]uint64)(nil), "lspd.CheckChannelsRequest.FakeChannelsEntry")
+	proto.RegisterMapType((map[string]uint64)(nil), "lspd.CheckChannelsRequest.WaitingCloseChannelsEntry")
+	proto.RegisterType((*CheckChannelsReply)(nil), "lspd.CheckChannelsReply")
+	proto.RegisterMapType((map[string]uint64)(nil), "lspd.CheckChannelsReply.ClosedChannelsEntry")
+	proto.RegisterMapType((map[string]uint64)(nil), "lspd.CheckChannelsReply.NotFakeChannelsEntry")
 }
 
 func init() {
@@ -441,43 +645,60 @@ func init() {
 }
 
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+	0xf3, 0x05, 0x8c, 0x79, 0x2e, 0xd6, 0x7c, 0xd7, 0xe3, 0x40, 0x7b, 0x54, 0xba, 0x1b, 0x0f, 0xe7,
-	0xab, 0x0f, 0x3e, 0xce, 0xe1, 0xe1, 0xc3, 0x04, 0x77, 0x9d, 0x8f, 0xf0, 0x1c, 0x3a, 0x2b, 0x46,
+	0x19, 0xf4, 0x5f, 0x32, 0x3f, 0x2d, 0x12, 0x81, 0x81, 0xec, 0x4f, 0x40, 0x05, 0x2d, 0x8b, 0x52,
-	0x63, 0x1c, 0xf8, 0x9b, 0x9b, 0x32, 0x1c, 0xdc, 0x93, 0x09, 0x12, 0x97, 0xb0, 0x7f, 0xc7, 0x2b,
+	0xb2, 0xe3, 0xc2, 0xe1, 0x9b, 0x70, 0xcd, 0xda, 0xb5, 0x3b, 0x4f, 0xc9, 0xbc, 0x7e, 0x4a, 0x4f,
-	0x7c, 0x19, 0xc8, 0xf7, 0x1b, 0x3e, 0x1c, 0x3e, 0x90, 0xf5, 0x72, 0x17, 0x6f, 0xa0, 0x2f, 0xd4,
+	0xa0, 0x9f, 0x85, 0x6b, 0x46, 0x45, 0x9e, 0x62, 0x59, 0xda, 0x0d, 0xe0, 0xfc, 0xd1, 0x85, 0xf1,
-	0xf1, 0xac, 0xd2, 0x79, 0xa0, 0x19, 0xaa, 0x7e, 0x8a, 0x9c, 0x2e, 0xda, 0x5f, 0x8c, 0x9e, 0x8e,
+	0xe5, 0x06, 0xfd, 0x6d, 0x39, 0xf5, 0xac, 0x1a, 0xd0, 0x73, 0x38, 0x42, 0x9d, 0x8d, 0x57, 0xbb,
-	0xdd, 0x5f, 0x69, 0x1c, 0x4d, 0x76, 0xfc, 0xef, 0xe9, 0xec, 0x6f, 0x00, 0x00, 0x00, 0xff, 0xff,
+	0x2c, 0xa6, 0x3b, 0x2c, 0x51, 0x7d, 0xc3, 0xc8, 0x8f, 0x30, 0x5c, 0xd1, 0x2d, 0x7a, 0xe5, 0xe5,
-	0x41, 0x89, 0xc1, 0x2c, 0xac, 0x04, 0x00, 0x00,
+	0xcc, 0xac, 0xce, 0xb4, 0x3b, 0x1b, 0x9c, 0x9e, 0xcc, 0xd5, 0x3e, 0x69, 0x63, 0x9e, 0xbf, 0xa2,
+	0x5b, 0xac, 0xb0, 0x97, 0x4c, 0xa4, 0x85, 0x6b, 0xae, 0x6a, 0x10, 0xf9, 0x0d, 0x26, 0xef, 0x68,
+	0x28, 0x64, 0xe3, 0xfc, 0x88, 0x67, 0x35, 0xee, 0xae, 0xe2, 0xfe, 0xfc, 0x3f, 0xb8, 0x7f, 0xd1,
+	0x8e, 0x97, 0xd2, 0xaf, 0x19, 0x63, 0xfc, 0xae, 0x45, 0x65, 0x7f, 0x05, 0x0f, 0xf7, 0xd2, 0x21,
+	0xc7, 0xd0, 0xbd, 0x79, 0x1c, 0x52, 0x24, 0x63, 0x38, 0x78, 0x4b, 0xa3, 0x1c, 0x55, 0x6b, 0x7b,
+	0xae, 0x3e, 0x7c, 0xd9, 0xf9, 0xc2, 0xb0, 0xbf, 0x86, 0xc7, 0xb7, 0xc6, 0xbc, 0x0b, 0x91, 0xf3,
+	0x77, 0x07, 0xc8, 0x4e, 0x49, 0xf2, 0xfd, 0xfd, 0x0a, 0x0f, 0x19, 0x17, 0x5e, 0xb3, 0xc7, 0x86,
+	0xea, 0xc3, 0x67, 0xad, 0x7d, 0x48, 0xa2, 0x62, 0xfe, 0x3d, 0x17, 0xfb, 0x4d, 0x1e, 0xb1, 0x26,
+	0x4a, 0x7e, 0x82, 0x91, 0xea, 0x6f, 0xf0, 0x7e, 0xc3, 0x93, 0xc4, 0xaa, 0xc6, 0xa0, 0xc9, 0x7b,
+	0xe4, 0x37, 0x40, 0xfb, 0x02, 0xc6, 0x6d, 0xf1, 0xef, 0xd4, 0xd5, 0x73, 0x78, 0xd4, 0x12, 0xea,
+	0x2e, 0x14, 0xa7, 0x7f, 0x75, 0x60, 0x58, 0x7a, 0xcb, 0xa5, 0x86, 0x29, 0xf9, 0x59, 0x36, 0x78,
+	0xf7, 0xd3, 0x44, 0x9e, 0x55, 0xc5, 0xde, 0xf2, 0xa9, 0xb3, 0x9f, 0xde, 0x6e, 0x20, 0x97, 0xd3,
+	0x3d, 0x72, 0x0e, 0x83, 0xda, 0xda, 0x24, 0x96, 0xb6, 0xdf, 0xdf, 0xbb, 0xf6, 0xa4, 0x45, 0xa3,
+	0x29, 0x5e, 0xc3, 0x68, 0x67, 0xf3, 0x91, 0x27, 0xda, 0xb8, 0x7d, 0x7d, 0xda, 0xf6, 0x2d, 0x5a,
+	0x4d, 0x77, 0x26, 0x4b, 0xaf, 0x0d, 0x8f, 0x8c, 0xb4, 0xf9, 0xf5, 0x7a, 0xb1, 0x77, 0x01, 0xe7,
+	0xde, 0xc5, 0xc7, 0x30, 0x0e, 0xf9, 0x7c, 0x9d, 0x26, 0xbe, 0xd6, 0x65, 0x98, 0xbe, 0x0d, 0x7d,
+	0xbc, 0xe8, 0x7f, 0x97, 0x25, 0xc1, 0x42, 0xfe, 0x18, 0x2c, 0x8c, 0xe5, 0xa1, 0xfa, 0x43, 0x38,
+	0xfb, 0x37, 0x00, 0x00, 0xff, 0xff, 0x05, 0x11, 0xba, 0x22, 0x2f, 0x08, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -495,6 +716,7 @@ type ChannelOpenerClient interface {
 	ChannelInformation(ctx context.Context, in *ChannelInformationRequest, opts ...grpc.CallOption) (*ChannelInformationReply, error)
 	OpenChannel(ctx context.Context, in *OpenChannelRequest, opts ...grpc.CallOption) (*OpenChannelReply, error)
 	RegisterPayment(ctx context.Context, in *RegisterPaymentRequest, opts ...grpc.CallOption) (*RegisterPaymentReply, error)
+	CheckChannels(ctx context.Context, in *Encrypted, opts ...grpc.CallOption) (*Encrypted, error)
 }
 
 type channelOpenerClient struct {
@@ -532,11 +754,21 @@ func (c *channelOpenerClient) RegisterPayment(ctx context.Context, in *RegisterP
 	return out, nil
 }
 
+func (c *channelOpenerClient) CheckChannels(ctx context.Context, in *Encrypted, opts ...grpc.CallOption) (*Encrypted, error) {
+	out := new(Encrypted)
+	err := c.cc.Invoke(ctx, "/lspd.ChannelOpener/CheckChannels", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // ChannelOpenerServer is the server API for ChannelOpener service.
 type ChannelOpenerServer interface {
 	ChannelInformation(context.Context, *ChannelInformationRequest) (*ChannelInformationReply, error)
 	OpenChannel(context.Context, *OpenChannelRequest) (*OpenChannelReply, error)
 	RegisterPayment(context.Context, *RegisterPaymentRequest) (*RegisterPaymentReply, error)
+	CheckChannels(context.Context, *Encrypted) (*Encrypted, error)
 }
 
 // UnimplementedChannelOpenerServer can be embedded to have forward compatible implementations.
@@ -552,6 +784,9 @@ func (*UnimplementedChannelOpenerServer) OpenChannel(ctx context.Context, req *O
 func (*UnimplementedChannelOpenerServer) RegisterPayment(ctx context.Context, req *RegisterPaymentRequest) (*RegisterPaymentReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method RegisterPayment not implemented")
 }
+func (*UnimplementedChannelOpenerServer) CheckChannels(ctx context.Context, req *Encrypted) (*Encrypted, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CheckChannels not implemented")
+}
 
 func RegisterChannelOpenerServer(s *grpc.Server, srv ChannelOpenerServer) {
 	s.RegisterService(&_ChannelOpener_serviceDesc, srv)
@@ -611,6 +846,24 @@ func _ChannelOpener_RegisterPayment_Handler(srv interface{}, ctx context.Context
 	return interceptor(ctx, in, info, handler)
 }
 
+func _ChannelOpener_CheckChannels_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Encrypted)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ChannelOpenerServer).CheckChannels(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/lspd.ChannelOpener/CheckChannels",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ChannelOpenerServer).CheckChannels(ctx, req.(*Encrypted))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _ChannelOpener_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "lspd.ChannelOpener",
 	HandlerType: (*ChannelOpenerServer)(nil),
@@ -627,6 +880,10 @@ var _ChannelOpener_serviceDesc = grpc.ServiceDesc{
 			MethodName: "RegisterPayment",
 			Handler:    _ChannelOpener_RegisterPayment_Handler,
 		},
+		{
+			MethodName: "CheckChannels",
+			Handler:    _ChannelOpener_CheckChannels_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "lspd.proto",

rpc/lspd.proto

@@ -11,6 +11,7 @@ service ChannelOpener {
       returns (ChannelInformationReply) {}
   rpc OpenChannel(OpenChannelRequest) returns (OpenChannelReply) {}
   rpc RegisterPayment (RegisterPaymentRequest) returns (RegisterPaymentReply) {}
+  rpc CheckChannels(Encrypted) returns (Encrypted) {}
 }
 
 message ChannelInformationRequest {
@@ -73,3 +74,24 @@ message PaymentInformation {
   int64 incoming_amount_msat = 4;
   int64 outgoing_amount_msat = 5;
 }
+
+message Encrypted {
+  bytes data = 1;
+}
+
+message Signed {
+  bytes data = 1;
+  bytes pubkey = 2;
+  bytes signature = 3;
+}
+
+message CheckChannelsRequest {
+  bytes encrypt_pubkey = 1;
+  map<string, uint64> fake_channels = 2;
+  map<string, uint64> waiting_close_channels = 3;
+}
+
+message CheckChannelsReply {
+  map<string, uint64> not_fake_channels = 1;
+  map<string, uint64> closed_channels = 2;
+}

sample.env

@@ -22,3 +22,7 @@ AWS_SECRET_ACCESS_KEY=<aws secret access key>
 OPENCHANNEL_NOTIFICATION_TO='["Name1 <user1@domain.com>"]'
 OPENCHANNEL_NOTIFICATION_CC='["Name2 <user2@domain.com>","Name3 <user3@domain.com>"]'
 OPENCHANNEL_NOTIFICATION_FROM="Name4 <user4@domain.com>"
+
+CHANNELMISMATCH_NOTIFICATION_TO='["Name1 <user1@domain.com>"]'
+CHANNELMISMATCH_NOTIFICATION_CC='["Name2 <user2@domain.com>","Name3 <user3@domain.com>"]'
+CHANNELMISMATCH_NOTIFICATION_FROM="Name4 <user4@domain.com>"

server.go

@@ -20,6 +20,7 @@ import (
 	grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
+	"github.com/lightningnetwork/lnd/lnwire"
 	"golang.org/x/sync/singleflight"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
@@ -140,6 +141,140 @@ func (s *server) OpenChannel(ctx context.Context, in *lspdrpc.OpenChannelRequest
 	return r.(*lspdrpc.OpenChannelReply), err
 }
 
+func getSignedEncryptedData(in *lspdrpc.Encrypted) (string, []byte, error) {
+	signedBlob, err := btcec.Decrypt(privateKey, in.Data)
+	if err != nil {
+		log.Printf("btcec.Decrypt(%x) error: %v", in.Data, err)
+		return "", nil, fmt.Errorf("btcec.Decrypt(%x) error: %w", in.Data, err)
+	}
+	var signed lspdrpc.Signed
+	err = proto.Unmarshal(signedBlob, &signed)
+	if err != nil {
+		log.Printf("proto.Unmarshal(%x) error: %v", signedBlob, err)
+		return "", nil, fmt.Errorf("proto.Unmarshal(%x) error: %w", signedBlob, err)
+	}
+	pubkey, err := btcec.ParsePubKey(signed.Pubkey, btcec.S256())
+	if err != nil {
+		log.Printf("unable to parse pubkey: %w", err)
+		return "", nil, fmt.Errorf("unable to parse pubkey: %w", err)
+	}
+	wireSig, err := lnwire.NewSigFromRawSignature(signed.Signature)
+	if err != nil {
+		return "", nil, fmt.Errorf("failed to decode signature: %v", err)
+	}
+	sig, err := wireSig.ToSignature()
+	if err != nil {
+		return "", nil, fmt.Errorf("failed to convert from wire format: %v",
+			err)
+	}
+	// The signature is over the sha256 hash of the message.
+	digest := chainhash.HashB(signed.Data)
+	if !sig.Verify(digest, pubkey) {
+		return "", nil, fmt.Errorf("invalid signature")
+	}
+	return hex.EncodeToString(signed.Pubkey), signed.Data, nil
+}
+
+func (s *server) CheckChannels(ctx context.Context, in *lspdrpc.Encrypted) (*lspdrpc.Encrypted, error) {
+	nodeID, data, err := getSignedEncryptedData(in)
+	if err != nil {
+		log.Printf("getSignedEncryptedData error: %v", err)
+		return nil, fmt.Errorf("getSignedEncryptedData error: %v", err)
+	}
+	var checkChannelsRequest lspdrpc.CheckChannelsRequest
+	err = proto.Unmarshal(data, &checkChannelsRequest)
+	if err != nil {
+		log.Printf("proto.Unmarshal(%x) error: %v", data, err)
+		return nil, fmt.Errorf("proto.Unmarshal(%x) error: %w", data, err)
+	}
+	notFakeChannels, err := getNotFakeChannels(nodeID, checkChannelsRequest.FakeChannels)
+	if err != nil {
+		log.Printf("getNotFakeChannels(%v) error: %v", checkChannelsRequest.FakeChannels, err)
+		return nil, fmt.Errorf("getNotFakeChannels(%v) error: %w", checkChannelsRequest.FakeChannels, err)
+	}
+	closedChannels, err := getClosedChannels(nodeID, checkChannelsRequest.WaitingCloseChannels)
+	if err != nil {
+		log.Printf("getNotFakeChannels(%v) error: %v", checkChannelsRequest.FakeChannels, err)
+		return nil, fmt.Errorf("getNotFakeChannels(%v) error: %w", checkChannelsRequest.FakeChannels, err)
+	}
+	if len(notFakeChannels) != 0 || len(closedChannels) != 0 {
+		err = sendChannelMismatchNotification(nodeID, notFakeChannels, closedChannels)
+		if err != nil {
+			log.Printf("sendChannelMismatchNotification() error: %v", err)
+		}
+	}
+	checkChannelsReply := lspdrpc.CheckChannelsReply{
+		NotFakeChannels: notFakeChannels,
+		ClosedChannels:  closedChannels,
+	}
+	dataReply, err := proto.Marshal(&checkChannelsReply)
+	if err != nil {
+		log.Printf("proto.Marshall() error: %v", err)
+		return nil, fmt.Errorf("proto.Marshal() error: %w", err)
+	}
+	pubkey, err := btcec.ParsePubKey(checkChannelsRequest.EncryptPubkey, btcec.S256())
+	if err != nil {
+		log.Printf("unable to parse pubkey: %v", err)
+		return nil, fmt.Errorf("unable to parse pubkey: %w", err)
+	}
+	encrypted, err := btcec.Encrypt(pubkey, dataReply)
+	if err != nil {
+		log.Printf("btcec.Encrypt() error: %v", err)
+		return nil, fmt.Errorf("btcec.Encrypt() error: %w", err)
+	}
+	return &lspdrpc.Encrypted{Data: encrypted}, nil
+}
+
+func getNotFakeChannels(nodeID string, channelPoints map[string]uint64) (map[string]uint64, error) {
+	var r map[string]uint64
+	channels, err := getNodeChannels(nodeID)
+	if err != nil {
+		return nil, err
+	}
+	for _, c := range channels {
+		if h, ok := channelPoints[c.ChannelPoint]; ok {
+			sid := lnwire.NewShortChanIDFromInt(c.ChanId)
+			if !sid.IsFake() {
+				r[c.ChannelPoint] = h
+			}
+		}
+	}
+	return r, nil
+}
+
+func getClosedChannels(nodeID string, channelPoints map[string]uint64) (map[string]uint64, error) {
+	var r map[string]uint64
+	waitingCloseChannels, err := getWaitingCloseChannels(nodeID)
+	if err != nil {
+		return nil, err
+	}
+	wcc := make(map[string]struct{})
+	for _, c := range waitingCloseChannels {
+		wcc[c.Channel.ChannelPoint] = struct{}{}
+	}
+	for c, h := range channelPoints {
+		if _, ok := wcc[c]; !ok {
+			r[c] = h
+		}
+	}
+	return r, nil
+}
+
+func getWaitingCloseChannels(nodeID string) ([]*lnrpc.PendingChannelsResponse_WaitingCloseChannel, error) {
+	clientCtx := metadata.AppendToOutgoingContext(context.Background(), "macaroon", os.Getenv("LND_MACAROON_HEX"))
+	pendingResponse, err := client.PendingChannels(clientCtx, &lnrpc.PendingChannelsRequest{})
+	if err != nil {
+		return nil, err
+	}
+	var waitingCloseChannels []*lnrpc.PendingChannelsResponse_WaitingCloseChannel
+	for _, p := range pendingResponse.WaitingCloseChannels {
+		if p.Channel.RemoteNodePub == nodeID {
+			waitingCloseChannels = append(waitingCloseChannels, p)
+		}
+	}
+	return waitingCloseChannels, nil
+}
+
 func getNodeChannels(nodeID string) ([]*lnrpc.Channel, error) {
 	clientCtx := metadata.AppendToOutgoingContext(context.Background(), "macaroon", os.Getenv("LND_MACAROON_HEX"))
 	listResponse, err := client.ListChannels(clientCtx, &lnrpc.ListChannelsRequest{})