1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FILEMANAGEMENT_DFS_SERVICE_CONTROL_CMD_PARSER_H 17 #define FILEMANAGEMENT_DFS_SERVICE_CONTROL_CMD_PARSER_H 18 19 #include <atomic> 20 #include <functional> 21 #include <string> 22 23 namespace OHOS { 24 namespace Storage { 25 namespace DistributedFile { 26 27 static const char DETERMINE_DEVICE_TYPE_KEY[] = "persist.distributed_scene.sys_settings_data_sync"; 28 static const uint16_t DFS_CMD_VERSION = 60; 29 30 enum ControlCmdType { 31 CMD_UNKNOWN = 0, 32 CMD_CHECK_ALLOW_CONNECT = 1, 33 CMD_MSG_RESPONSE = 2, 34 CMD_PUBLISH_NOTIFICATION = 3, 35 CMD_CANCEL_NOTIFICATION = 4, 36 CMD_ACTIVE_DISCONNECT = 5, 37 }; 38 39 struct ControlCmd { 40 static std::atomic<int32_t> nextMsgId; 41 42 uint16_t version = DFS_CMD_VERSION; 43 int32_t msgId = 0; 44 int32_t msgType = 0; 45 std::string msgBody = ""; 46 std::string networkId = ""; 47 ControlCmdControlCmd48 ControlCmd() : msgId(nextMsgId.fetch_add(1, std::memory_order_relaxed)) {} 49 }; 50 51 inline std::atomic<int32_t> ControlCmd::nextMsgId; 52 53 class ControlCmdParser { 54 public: 55 static bool ParseFromJson(const std::string &jsonStr, ControlCmd &outCmd); 56 static bool SerializeToJson(const ControlCmd &cmd, std::string &outJsonStr); 57 58 static bool HandleRequest(const ControlCmd &inCmd, ControlCmd &outCmd); 59 60 static bool CheckAllowConnect(const ControlCmd &inCmd, ControlCmd &outCmd); 61 static bool PublishNotification(const ControlCmd &inCmd, ControlCmd &outCmd); 62 static bool CancelNotification(const ControlCmd &inCmd, ControlCmd &outCmd); 63 static bool DisconnectByRemote(const ControlCmd &inCmd, ControlCmd &outCmd); 64 65 static void RegisterDisconnectCallback(std::function<void(std::string)> cb); 66 67 private: 68 static std::function<void(std::string)> disconnectCallback_; 69 }; 70 71 } // namespace DistributedFile 72 } // namespace Storage 73 } // namespace OHOS 74 75 #endif // FILEMANAGEMENT_DFS_SERVICE_CONTROL_CMD_PARSER_H