1 /*
2  * Copyright (c) 2021 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 FOUNDATION_EVENT_CESFWK_SERVICES_INCLUDE_PUBLIC_MANAGER_H
17 #define FOUNDATION_EVENT_CESFWK_SERVICES_INCLUDE_PUBLIC_MANAGER_H
18 
19 #include <map>
20 #include <mutex>
21 #include <vector>
22 #include <stdint.h>
23 #include "singleton.h"
24 
25 namespace OHOS {
26 namespace EventFwk {
27 class PublishManager : public DelayedSingleton<PublishManager> {
28 public:
29     PublishManager();
30 
31     ~PublishManager();
32 
33     /**
34      * Checks for flood attacks.
35      *
36      * @param appUid Indicates the uid of the event sender.
37      * @return Returns true if success; false otherwise.
38      */
39     bool CheckIsFloodAttack(pid_t appUid);
40 
41 private:
42     std::mutex mutex_;
43     std::map<pid_t, std::vector<int64_t>> floodAttackAppStatistics_;
44     const uint32_t FLOOD_ATTACK_NUMBER_MAX = 20;  // Frequency of decision
45     const int64_t FLOOD_ATTACK_INTERVAL_MAX = 5;  // Period of decision (unit: millisecond)
46 };
47 }  // namespace EventFwk
48 }  // namespace OHOS
49 
50 #endif  // FOUNDATION_EVENT_CESFWK_SERVICES_INCLUDE_PUBLIC_MANAGER_H