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120 lines
4.2 KiB
120 lines
4.2 KiB
// |
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// Copyright (C) 2016 The Android Open Source Project |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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#include "trunks/trunks_binder_service.h" |
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#include <sysexits.h> |
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#include <base/bind.h> |
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#include <binderwrapper/binder_wrapper.h> |
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#include "trunks/binder_interface.h" |
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#include "trunks/command_transceiver.h" |
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#include "trunks/error_codes.h" |
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#include "trunks/interface.pb.h" |
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namespace { |
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// If |command| is a valid command protobuf, provides the |command_data| and |
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// returns true. Otherwise, returns false. |
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bool ParseCommandProto(const std::vector<uint8_t>& command, |
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std::string* command_data) { |
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trunks::SendCommandRequest request_proto; |
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if (!request_proto.ParseFromArray(command.data(), command.size()) || |
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!request_proto.has_command() || request_proto.command().empty()) { |
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return false; |
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} |
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*command_data = request_proto.command(); |
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return true; |
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} |
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void CreateResponseProto(const std::string& data, |
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std::vector<uint8_t>* response) { |
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trunks::SendCommandResponse response_proto; |
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response_proto.set_response(data); |
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response->resize(response_proto.ByteSize()); |
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CHECK(response_proto.SerializeToArray(response->data(), response->size())) |
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<< "TrunksBinderService: Failed to serialize protobuf."; |
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} |
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} // namespace |
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namespace trunks { |
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int TrunksBinderService::OnInit() { |
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android::BinderWrapper::Create(); |
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if (!watcher_.Init()) { |
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LOG(ERROR) << "TrunksBinderService: BinderWatcher::Init failed."; |
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return EX_UNAVAILABLE; |
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} |
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binder_ = new BinderServiceInternal(this); |
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if (!android::BinderWrapper::Get()->RegisterService( |
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kTrunksServiceName, android::IInterface::asBinder(binder_))) { |
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LOG(ERROR) << "TrunksBinderService: RegisterService failed."; |
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return EX_UNAVAILABLE; |
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} |
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LOG(INFO) << "Trunks: Binder service registered."; |
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return brillo::Daemon::OnInit(); |
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} |
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TrunksBinderService::BinderServiceInternal::BinderServiceInternal( |
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TrunksBinderService* service) |
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: service_(service) {} |
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android::binder::Status TrunksBinderService::BinderServiceInternal::SendCommand( |
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const std::vector<uint8_t>& command, |
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const android::sp<android::trunks::ITrunksClient>& client) { |
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auto callback = |
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base::Bind(&TrunksBinderService::BinderServiceInternal::OnResponse, |
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GetWeakPtr(), client); |
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std::string command_data; |
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if (!ParseCommandProto(command, &command_data)) { |
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LOG(ERROR) << "TrunksBinderService: Bad command data."; |
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callback.Run(CreateErrorResponse(SAPI_RC_BAD_PARAMETER)); |
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return android::binder::Status::ok(); |
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} |
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service_->transceiver_->SendCommand(command_data, callback); |
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return android::binder::Status::ok(); |
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} |
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void TrunksBinderService::BinderServiceInternal::OnResponse( |
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const android::sp<android::trunks::ITrunksClient>& client, |
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const std::string& response) { |
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std::vector<uint8_t> binder_response; |
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CreateResponseProto(response, &binder_response); |
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android::binder::Status status = client->OnCommandResponse(binder_response); |
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if (!status.isOk()) { |
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LOG(ERROR) << "TrunksBinderService: Failed to send response to client: " |
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<< status.toString8(); |
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} |
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} |
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android::binder::Status |
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TrunksBinderService::BinderServiceInternal::SendCommandAndWait( |
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const std::vector<uint8_t>& command, |
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std::vector<uint8_t>* response) { |
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std::string command_data; |
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if (!ParseCommandProto(command, &command_data)) { |
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LOG(ERROR) << "TrunksBinderService: Bad command data."; |
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CreateResponseProto(CreateErrorResponse(SAPI_RC_BAD_PARAMETER), response); |
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return android::binder::Status::ok(); |
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} |
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CreateResponseProto(service_->transceiver_->SendCommandAndWait(command_data), |
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response); |
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return android::binder::Status::ok(); |
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} |
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} // namespace trunks
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