1 /*
2  * Copyright (C) 2016 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 #ifndef NETD_SERVER_ANDROID_NET_UID_RANGE_H
18 #define NETD_SERVER_ANDROID_NET_UID_RANGE_H
19 
20 #include <binder/Parcelable.h>
21 
22 namespace android {
23 
24 namespace net {
25 
26 /*
27  * C++ implementation of UidRange, a contiguous range of UIDs.
28  */
29 class UidRange : public Parcelable {
30 public:
31     UidRange() = default;
32     virtual ~UidRange() = default;
33     UidRange(const UidRange& range) = default;
34     UidRange(int32_t start, int32_t stop);
35 
36     status_t writeToParcel(Parcel* parcel) const override;
37     status_t readFromParcel(const Parcel* parcel) override;
38 
39     /*
40      * Setters for UidRange start and stop UIDs.
41      */
42     void setStart(int32_t uid);
43     void setStop(int32_t uid);
44 
45     /*
46      * Getters for UidRange start and stop UIDs.
47      */
48     int32_t getStart() const;
49     int32_t getStop() const;
50 
51     /**
52      * Additional functions.
53      */
54     uint32_t length() const;
55 
56 
57     /**
58      * Operators and comparators.
59      */
60     friend bool operator<(const UidRange& lhs, const UidRange& rhs) {
61         return lhs.mStart != rhs.mStart ? (lhs.mStart < rhs.mStart) : (lhs.mStop < rhs.mStop);
62     }
63 
64     friend bool operator==(const UidRange& lhs, const UidRange& rhs) {
65         return (lhs.mStart == rhs.mStart && lhs.mStop == rhs.mStop);
66     }
67 
68     friend bool operator!=(const UidRange& lhs, const UidRange& rhs) {
69         return !(lhs == rhs);
70     }
71 
72 private:
73     int32_t mStart = -1;
74     int32_t mStop = -1;
75 };
76 
77 }  // namespace net
78 
79 }  // namespace android
80 
81 #endif  // NETD_SERVER_ANDROID_NET_UID_RANGE_H
82