| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| // Implementation of a Keyset Service. |
| #include "keyset_impl.h" |
| |
| #include "tink/binary_keyset_reader.h" |
| #include "tink/binary_keyset_writer.h" |
| #include "tink/cleartext_keyset_handle.h" |
| #include "tink/json_keyset_reader.h" |
| #include "tink/json_keyset_writer.h" |
| #include "tink/keyset_handle.h" |
| #include "proto/tink.pb.h" |
| |
| namespace tink_testing_api { |
| |
| using ::crypto::tink::BinaryKeysetReader; |
| using ::crypto::tink::BinaryKeysetWriter; |
| using ::crypto::tink::CleartextKeysetHandle; |
| using ::crypto::tink::JsonKeysetReader; |
| using ::crypto::tink::JsonKeysetWriter; |
| using ::crypto::tink::KeysetHandle; |
| using ::google::crypto::tink::KeyTemplate; |
| using ::grpc::ServerContext; |
| using ::grpc::Status; |
| |
| KeysetImpl::KeysetImpl() {} |
| |
| // Generates a new keyset with one key from a template. |
| ::grpc::Status KeysetImpl::Generate(grpc::ServerContext* context, |
| const KeysetGenerateRequest* request, |
| KeysetGenerateResponse* response) { |
| KeyTemplate key_template; |
| if (!key_template.ParseFromString(request->template_())) { |
| response->set_err("Could not parse the key template"); |
| return ::grpc::Status::OK; |
| } |
| auto handle_result = KeysetHandle::GenerateNew(key_template); |
| if (!handle_result.ok()) { |
| response->set_err(handle_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| std::stringbuf keyset; |
| auto writer_result = |
| BinaryKeysetWriter::New(absl::make_unique<std::ostream>(&keyset)); |
| if (!writer_result.ok()) { |
| response->set_err(writer_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto status = CleartextKeysetHandle::Write(writer_result.ValueOrDie().get(), |
| *handle_result.ValueOrDie()); |
| if (!status.ok()) { |
| response->set_err(status.error_message()); |
| return ::grpc::Status::OK; |
| } |
| response->set_keyset(keyset.str()); |
| return ::grpc::Status::OK; |
| } |
| |
| // Returns a public keyset for a given private keyset. |
| ::grpc::Status KeysetImpl::Public(grpc::ServerContext* context, |
| const KeysetPublicRequest* request, |
| KeysetPublicResponse* response) { |
| auto reader_result = BinaryKeysetReader::New(request->private_keyset()); |
| if (!reader_result.ok()) { |
| response->set_err(reader_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto private_handle_result = |
| CleartextKeysetHandle::Read(std::move(reader_result.ValueOrDie())); |
| if (!private_handle_result.ok()) { |
| response->set_err(private_handle_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto public_handle_result = |
| private_handle_result.ValueOrDie()->GetPublicKeysetHandle(); |
| if (!public_handle_result.ok()) { |
| response->set_err(public_handle_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| std::stringbuf public_keyset; |
| auto writer_result = |
| BinaryKeysetWriter::New(absl::make_unique<std::ostream>(&public_keyset)); |
| if (!writer_result.ok()) { |
| response->set_err(writer_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto status = CleartextKeysetHandle::Write( |
| writer_result.ValueOrDie().get(), *public_handle_result.ValueOrDie()); |
| if (!status.ok()) { |
| response->set_err(status.error_message()); |
| return ::grpc::Status::OK; |
| } |
| response->set_public_keyset(public_keyset.str()); |
| return ::grpc::Status::OK; |
| } |
| |
| // Converts a keyset from binary to JSON format. |
| ::grpc::Status KeysetImpl::ToJson(grpc::ServerContext* context, |
| const KeysetToJsonRequest* request, |
| KeysetToJsonResponse* response) { |
| auto reader_result = BinaryKeysetReader::New(request->keyset()); |
| if (!reader_result.ok()) { |
| response->set_err(reader_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto handle_result = |
| CleartextKeysetHandle::Read(std::move(reader_result.ValueOrDie())); |
| if (!handle_result.ok()) { |
| response->set_err(handle_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| std::stringbuf json_keyset; |
| auto writer_result = |
| JsonKeysetWriter::New(absl::make_unique<std::ostream>(&json_keyset)); |
| if (!writer_result.ok()) { |
| response->set_err(writer_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto status = CleartextKeysetHandle::Write(writer_result.ValueOrDie().get(), |
| *handle_result.ValueOrDie()); |
| if (!status.ok()) { |
| response->set_err(status.error_message()); |
| return ::grpc::Status::OK; |
| } |
| response->set_json_keyset(json_keyset.str()); |
| return ::grpc::Status::OK; |
| } |
| |
| // Converts a keyset from JSON to binary format. |
| ::grpc::Status KeysetImpl::FromJson(grpc::ServerContext* context, |
| const KeysetFromJsonRequest* request, |
| KeysetFromJsonResponse* response) { |
| auto reader_result = JsonKeysetReader::New(request->json_keyset()); |
| if (!reader_result.ok()) { |
| response->set_err(reader_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto handle_result = |
| CleartextKeysetHandle::Read(std::move(reader_result.ValueOrDie())); |
| if (!handle_result.ok()) { |
| response->set_err(handle_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| std::stringbuf keyset; |
| auto writer_result = |
| BinaryKeysetWriter::New(absl::make_unique<std::ostream>(&keyset)); |
| if (!writer_result.ok()) { |
| response->set_err(writer_result.status().error_message()); |
| return ::grpc::Status::OK; |
| } |
| auto status = CleartextKeysetHandle::Write(writer_result.ValueOrDie().get(), |
| *handle_result.ValueOrDie()); |
| if (!status.ok()) { |
| response->set_err(status.error_message()); |
| return ::grpc::Status::OK; |
| } |
| response->set_keyset(keyset.str()); |
| return ::grpc::Status::OK; |
| } |
| |
| } // namespace tink_testing_api |