1 /*
2  * Copyright (C) 2022 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 OHOS_WIFI_HID2D_SERVICE_UTILS_H
17 #define OHOS_WIFI_HID2D_SERVICE_UTILS_H
18 
19 #include <string>
20 #include <list>
21 #include <map>
22 #include <atomic>
23 
24 namespace OHOS {
25 namespace Wifi {
26 class IpPool {
27 public:
28     static bool InitIpPool(const std::string& serverIp);
29     static std::string GetIp(const std::string& gcMac);
30     static void ReleaseIp(const std::string& gcMac);
31     static void ReleaseIpPool();
32 
33 private:
34     static bool IsValidIp(const std::string& ip);
35 
36     static std::list<std::string> ipList;
37     static std::map<std::string, std::string> mapGcMacToAllocIp;
38     static constexpr int HID2D_IPPOOL_START = 3;
39     static constexpr int HID2D_IPPOOL_END = 75;
40 };
41 
42 class SharedLinkManager {
43 public:
44     static void SetGroupUid(int callingUid);
45     static void GetGroupUid(int &callingUid);
46     static void IncreaseSharedLink();
47     static void IncreaseSharedLink(int callingUid);
48     static void DecreaseSharedLink(int callingUid);
49     static void ClearSharedLinkCount();
50     static int GetSharedLinkCount();
51 
52 private:
53     static std::map<int, int> sharedLinkCountMap;
54     static int firstGroupUid;
55 };
56 }  // namespace Wifi
57 }  // namespace OHOS
58 #endif