| /* |
| * Copyright 2020 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. |
| */ |
| |
| #pragma once |
| |
| #include "keymaster/serializable.h" |
| |
| #include "common/libs/fs/shared_fd.h" |
| #include "common/libs/security/keymaster_ipc.h" |
| |
| #include <memory> |
| |
| namespace cvd { |
| |
| /** |
| * A destroyer for keymaster_message instances created with |
| * CreateKeymasterMessage. Wipes memory from the keymaster_message instances. |
| */ |
| class KeymasterCommandDestroyer { |
| public: |
| void operator()(keymaster_message* ptr); |
| }; |
| |
| /** An owning pointer for a keymaster_message instance. */ |
| using ManagedKeymasterMessage = |
| std::unique_ptr<keymaster_message, KeymasterCommandDestroyer>; |
| |
| /** |
| * Allocates memory for a keymaster_message carrying a message of size |
| * `payload_size`. |
| */ |
| ManagedKeymasterMessage CreateKeymasterMessage( |
| keymaster_command command, size_t payload_size); |
| |
| /* |
| * Interface for communication channels that synchronously communicate Keymaster |
| * IPC/RPC calls. Sends messages over a file descriptor. |
| */ |
| class KeymasterChannel { |
| private: |
| SharedFD channel_; |
| public: |
| KeymasterChannel(SharedFD channel); |
| |
| bool SendMessage(keymaster_command command, |
| const keymaster::Serializable& message); |
| ManagedKeymasterMessage ReceiveMessage(); |
| }; |
| |
| } // namespace cvd |