1 /*
2  * Copyright (c) 2023 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 NET_POLICY_FILE_EVENT_HANDLER_H
17 #define NET_POLICY_FILE_EVENT_HANDLER_H
18 
19 #include <iostream>
20 #include <dirent.h>
21 
22 #include "event_handler.h"
23 #include "event_runner.h"
24 #include "ffrt.h"
25 #include "singleton.h"
26 
27 struct PolicyFileEvent {
28     std::string json;
29 };
30 
31 namespace OHOS {
32 namespace NetManagerStandard {
33 class NetPolicyFileEventHandler {
34 public:
35     static constexpr uint32_t MSG_POLICY_FILE_WRITE = 2;
36     static constexpr uint32_t MSG_POLICY_FILE_DELETE = 3;
37     static constexpr uint32_t MSG_POLICY_FILE_COMMIT = 4;
38 
39     explicit NetPolicyFileEventHandler(const char *queueName);
40     virtual ~NetPolicyFileEventHandler() = default;
41     void SendWriteEvent(AppExecFwk::InnerEvent::Pointer &event);
42 
43 private:
44     bool Write();
45     bool DeleteBak();
46 
47     void SendEvent(const AppExecFwk::InnerEvent::Pointer &event, uint32_t delayTime = 0);
48     void ProcessEvent(uint32_t eventId, std::shared_ptr<PolicyFileEvent> eventData);
49     std::atomic<int64_t> timeStamp_ = 0;
50     std::atomic<bool> commitWait_ = false;
51     std::string fileContent_;
52     ffrt::queue netPolicyFileEventQueue_;
53 };
54 } // namespace NetManagerStandard
55 } // namespace OHOS
56 #endif // NET_POLICY_EVENT_HANDLER_H