| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #include "adb.h" |
| #include "adb_io.h" |
| #include "adb_unique_fd.h" |
| #include "adb_utils.h" |
| #include "shell_service.h" |
| |
| namespace { |
| |
| struct AbbProcess; |
| static auto& abbp = *new std::unique_ptr<AbbProcess>(std::make_unique<AbbProcess>()); |
| |
| struct AbbProcess { |
| unique_fd sendCommand(std::string_view command); |
| |
| private: |
| static unique_fd startAbbProcess(unique_fd* error_fd); |
| |
| static constexpr auto kRetries = 2; |
| static constexpr auto kErrorProtocol = SubprocessProtocol::kShell; |
| |
| std::mutex locker_; |
| unique_fd socket_fd_; |
| }; |
| |
| unique_fd AbbProcess::sendCommand(std::string_view command) { |
| std::unique_lock lock{locker_}; |
| |
| for (int i = 0; i < kRetries; ++i) { |
| unique_fd error_fd; |
| if (socket_fd_ == -1) { |
| socket_fd_ = startAbbProcess(&error_fd); |
| } |
| if (socket_fd_ == -1) { |
| LOG(ERROR) << "failed to start abb process"; |
| return error_fd; |
| } |
| |
| if (!SendProtocolString(socket_fd_, std::string(command))) { |
| PLOG(ERROR) << "failed to send command to abb"; |
| socket_fd_.reset(); |
| continue; |
| } |
| |
| unique_fd fd; |
| std::string error; |
| if (!ReceiveFileDescriptor(socket_fd_, &fd, &error)) { |
| LOG(ERROR) << "failed to receive FD from abb: " << error; |
| socket_fd_.reset(); |
| continue; |
| } |
| |
| return fd; |
| } |
| |
| LOG(ERROR) << "abb is unavailable"; |
| socket_fd_.reset(); |
| return ReportError(kErrorProtocol, "abb is unavailable"); |
| } |
| |
| unique_fd AbbProcess::startAbbProcess(unique_fd* error_fd) { |
| constexpr auto abb_process_type = SubprocessType::kRaw; |
| constexpr auto abb_protocol = SubprocessProtocol::kNone; |
| constexpr auto make_pty_raw = false; |
| return StartSubprocess("abb", "dumb", abb_process_type, abb_protocol, make_pty_raw, |
| kErrorProtocol, error_fd); |
| } |
| |
| } // namespace |
| |
| unique_fd execute_binder_command(std::string_view command) { |
| return abbp->sendCommand(command); |
| } |