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1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include "Network.h"
20 #include "Permission.h"
21 
22 namespace android::net {
23 
24 class PhysicalNetwork : public Network {
25   public:
26     class Delegate {
27       public:
28         virtual ~Delegate();
29 
30         [[nodiscard]] virtual int addFallthrough(const std::string& physicalInterface,
31                                                  Permission permission) = 0;
32         [[nodiscard]] virtual int removeFallthrough(const std::string& physicalInterface,
33                                                     Permission permission) = 0;
34     };
35 
36     PhysicalNetwork(unsigned netId, Delegate* delegate, bool local);
37     virtual ~PhysicalNetwork();
38 
39     // These refer to permissions that apps must have in order to use this network.
40     Permission getPermission() const;
41     [[nodiscard]] int setPermission(Permission permission);
42 
43     [[nodiscard]] int addAsDefault();
44     [[nodiscard]] int removeAsDefault();
45     [[nodiscard]] int addUsers(const UidRanges& uidRanges, int32_t subPriority) override;
46     [[nodiscard]] int removeUsers(const UidRanges& uidRanges, int32_t subPriority) override;
isPhysical()47     bool isPhysical() override { return true; }
canAddUsers()48     bool canAddUsers() override { return true; }
49 
50   private:
getTypeString()51     std::string getTypeString() const override { return "PHYSICAL"; };
52     [[nodiscard]] int addInterface(const std::string& interface) override;
53     [[nodiscard]] int removeInterface(const std::string& interface) override;
54     int destroySocketsLackingPermission(Permission permission);
55     void invalidateRouteCache(const std::string& interface);
56     bool isValidSubPriority(int32_t priority) override;
57 
58     Delegate* const mDelegate;
59     Permission mPermission;
60     bool mIsDefault;
61     const bool mIsLocalNetwork;
62 };
63 
64 }  // namespace android::net
65