package object import ( "context" "crypto/ecdsa" "github.com/nspcc-dev/neofs-api-go/v2/object" "github.com/nspcc-dev/neofs-api-go/v2/signature" "github.com/nspcc-dev/neofs-node/pkg/services/util" "github.com/pkg/errors" ) type signService struct { key *ecdsa.PrivateKey searchSigService *util.UnarySignService getSigService *util.UnarySignService } type searchStreamSigner struct { key *ecdsa.PrivateKey stream object.SearchObjectStreamer } type getStreamSigner struct { key *ecdsa.PrivateKey stream object.GetObjectStreamer } func NewSignService(key *ecdsa.PrivateKey, svc object.Service) object.Service { return &signService{ key: key, searchSigService: util.NewUnarySignService( nil, // private key is not needed because service returns stream func(ctx context.Context, req interface{}) (interface{}, error) { return svc.Search(ctx, req.(*object.SearchRequest)) }, ), getSigService: util.NewUnarySignService( nil, // private key is not needed because service returns stream func(ctx context.Context, req interface{}) (interface{}, error) { return svc.Get(ctx, req.(*object.GetRequest)) }, ), } } func (s *getStreamSigner) Recv() (*object.GetResponse, error) { r, err := s.stream.Recv() if err != nil { return nil, errors.Wrap(err, "could not receive response") } if err := signature.SignServiceMessage(s.key, r); err != nil { return nil, errors.Wrap(err, "could not sign response") } return r, nil } func (s *signService) Get(ctx context.Context, req *object.GetRequest) (object.GetObjectStreamer, error) { resp, err := s.getSigService.HandleServerStreamRequest(ctx, req) if err != nil { return nil, err } return &getStreamSigner{ key: s.key, stream: resp.(object.GetObjectStreamer), }, nil } func (s *signService) Put(context.Context) (object.PutObjectStreamer, error) { panic("implement me") } func (s *signService) Head(context.Context, *object.HeadRequest) (*object.HeadResponse, error) { panic("implement me") } func (s *searchStreamSigner) Recv() (*object.SearchResponse, error) { r, err := s.stream.Recv() if err != nil { return nil, errors.Wrap(err, "could not receive response") } if err := signature.SignServiceMessage(s.key, r); err != nil { return nil, errors.Wrap(err, "could not sign response") } return r, nil } func (s *signService) Search(ctx context.Context, req *object.SearchRequest) (object.SearchObjectStreamer, error) { resp, err := s.searchSigService.HandleServerStreamRequest(ctx, req) if err != nil { return nil, err } return &searchStreamSigner{ key: s.key, stream: resp.(object.SearchObjectStreamer), }, nil } func (s *signService) Delete(context.Context, *object.DeleteRequest) (*object.DeleteResponse, error) { panic("implement me") } func (s *signService) GetRange(context.Context, *object.GetRangeRequest) (object.GetRangeObjectStreamer, error) { panic("implement me") } func (s *signService) GetRangeHash(context.Context, *object.GetRangeHashRequest) (*object.GetRangeHashResponse, error) { panic("implement me") }