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 #include <netinet/in.h> 21 22 #include <binder/Parcelable.h> 23 #include <utils/String16.h> 24 #include <utils/StrongPointer.h> 25 26 namespace android { 27 28 namespace net { 29 30 /* 31 * C++ implementation of the Java class android.net.IpPrefix 32 */ 33 class IpPrefix : public Parcelable { 34 public: 35 IpPrefix() = default; 36 virtual ~IpPrefix() = default; 37 IpPrefix(const IpPrefix& prefix) = default; 38 39 IpPrefix(const struct in6_addr& addr, int32_t plen): 40 mUnion(addr), mPrefixLength(plen), mIsIpv6(true) { } 41 42 IpPrefix(const struct in_addr& addr, int32_t plen): 43 mUnion(addr), mPrefixLength(plen), mIsIpv6(false) { } 44 45 bool getAddressAsIn6Addr(struct in6_addr* addr) const; 46 bool getAddressAsInAddr(struct in_addr* addr) const; 47 48 const struct in6_addr& getAddressAsIn6Addr() const; 49 const struct in_addr& getAddressAsInAddr() const; 50 51 bool isIpv6() const; 52 bool isIpv4() const; 53 54 int32_t getPrefixLength() const; 55 56 void setAddress(const struct in6_addr& addr); 57 void setAddress(const struct in_addr& addr); 58 59 void setPrefixLength(int32_t prefix); 60 61 friend bool operator==(const IpPrefix& lhs, const IpPrefix& rhs); 62 63 friend bool operator!=(const IpPrefix& lhs, const IpPrefix& rhs) { 64 return !(lhs == rhs); 65 } 66 67 public: 68 // Overrides 69 status_t writeToParcel(Parcel* parcel) const override; 70 status_t readFromParcel(const Parcel* parcel) override; 71 72 private: 73 union InternalUnion { 74 InternalUnion() = default; 75 InternalUnion(const struct in6_addr &addr):mIn6Addr(addr) { }; 76 InternalUnion(const struct in_addr &addr):mInAddr(addr) { }; 77 struct in6_addr mIn6Addr; 78 struct in_addr mInAddr; 79 } mUnion; 80 int32_t mPrefixLength; 81 bool mIsIpv6; 82 }; 83 84 } // namespace net 85 86 } // namespace android 87 88 #endif // ANDROID_IP_PREFIX_H 89
