From 11dc17ae2da47a5547529c92d746c11f7e6f15c0 Mon Sep 17 00:00:00 2001 From: Yaacov Akiba Slama Date: Thu, 24 Dec 2020 18:01:57 +0200 Subject: [PATCH] Add checkChannels grpc function --- email.go | 42 +++++++ rpc/lspd.pb.go | 331 +++++++++++++++++++++++++++++++++++++++++++------ rpc/lspd.proto | 22 ++++ sample.env | 6 +- server.go | 135 ++++++++++++++++++++ 5 files changed, 498 insertions(+), 38 deletions(-) diff --git a/email.go b/email.go index 3277a48..0cccb39 100644 --- a/email.go +++ b/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 := ` +

NodeID: {{ .NodeID }}

+ {{ if .NotFakeChannels }}

Channels not fake anynmore

+ + {{ range $key, $value := .NotFakeChannels }}{{ end }} +
Channel PointHeight Hint
{{ $key }}{{ $value }}
{{ end }} + {{ if .ClosedChannels }}

Closed Channels

+ + {{ range $key, $value := .ClosedChannels }}{{ end }} +
Channel PointHeight Hint
{{ $key }}{{ $value }}
{{ 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, diff --git a/rpc/lspd.pb.go b/rpc/lspd.pb.go index fe84bee..714a501 100644 --- a/rpc/lspd.pb.go +++ b/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 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0x3b, 0x2c, 0x51, 0x7d, 0xc3, 0xc8, 0x8f, 0x30, 0x5c, 0xd1, 0x2d, 0x7a, 0xe5, 0xe5, + 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", diff --git a/rpc/lspd.proto b/rpc/lspd.proto index 44f7b2f..a1b8308 100644 --- a/rpc/lspd.proto +++ b/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 fake_channels = 2; + map waiting_close_channels = 3; +} + +message CheckChannelsReply { + map not_fake_channels = 1; + map closed_channels = 2; +} \ No newline at end of file diff --git a/sample.env b/sample.env index ee103b9..880c770 100644 --- a/sample.env +++ b/sample.env @@ -21,4 +21,8 @@ AWS_SECRET_ACCESS_KEY= OPENCHANNEL_NOTIFICATION_TO='["Name1 "]' OPENCHANNEL_NOTIFICATION_CC='["Name2 ","Name3 "]' -OPENCHANNEL_NOTIFICATION_FROM="Name4 " \ No newline at end of file +OPENCHANNEL_NOTIFICATION_FROM="Name4 " + +CHANNELMISMATCH_NOTIFICATION_TO='["Name1 "]' +CHANNELMISMATCH_NOTIFICATION_CC='["Name2 ","Name3 "]' +CHANNELMISMATCH_NOTIFICATION_FROM="Name4 " \ No newline at end of file diff --git a/server.go b/server.go index 08f41e5..f96cac1 100644 --- a/server.go +++ b/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{})