1/*
2 * Copyright (C) 2015 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 ANDROID_IP_PREFIX_H
18#define ANDROID_IP_PREFIX_H
19
20#ifndef __ANDROID_VNDK__
21
22#include <netinet/in.h>
23
24#include <binder/Parcelable.h>
25#include <utils/String16.h>
26#include <utils/StrongPointer.h>
27
28namespace android {
29
30namespace net {
31
32/*
33 * C++ implementation of the Java class android.net.IpPrefix
34 */
35class IpPrefix : public Parcelable {
36public:
37    IpPrefix() = default;
38    virtual ~IpPrefix() = default;
39    IpPrefix(const IpPrefix& prefix) = default;
40
41    IpPrefix(const struct in6_addr& addr, int32_t plen):
42        mUnion(addr), mPrefixLength(plen), mIsIpv6(true) { }
43
44    IpPrefix(const struct in_addr& addr, int32_t plen):
45        mUnion(addr), mPrefixLength(plen), mIsIpv6(false) { }
46
47    bool getAddressAsIn6Addr(struct in6_addr* addr) const;
48    bool getAddressAsInAddr(struct in_addr* addr) const;
49
50    const struct in6_addr& getAddressAsIn6Addr() const;
51    const struct in_addr& getAddressAsInAddr() const;
52
53    bool isIpv6() const;
54    bool isIpv4() const;
55
56    int32_t getPrefixLength() const;
57
58    void setAddress(const struct in6_addr& addr);
59    void setAddress(const struct in_addr& addr);
60
61    void setPrefixLength(int32_t prefix);
62
63    friend bool operator==(const IpPrefix& lhs, const IpPrefix& rhs);
64
65    friend bool operator!=(const IpPrefix& lhs, const IpPrefix& rhs) {
66        return !(lhs == rhs);
67    }
68
69public:
70    // Overrides
71    status_t writeToParcel(Parcel* parcel) const override;
72    status_t readFromParcel(const Parcel* parcel) override;
73
74private:
75    union InternalUnion {
76        InternalUnion() = default;
77        InternalUnion(const struct in6_addr &addr):mIn6Addr(addr) { };
78        InternalUnion(const struct in_addr &addr):mInAddr(addr) { };
79        struct in6_addr mIn6Addr;
80        struct in_addr mInAddr;
81    } mUnion;
82    int32_t mPrefixLength;
83    bool mIsIpv6;
84};
85
86}  // namespace net
87
88}  // namespace android
89
90#else // __ANDROID_VNDK__
91#error "This header is not visible to vendors"
92#endif // __ANDROID_VNDK__
93
94#endif  // ANDROID_IP_PREFIX_H
95