Robert Quattlebaum | 6316f5b | 2017-01-04 13:25:14 -0800 | [diff] [blame] | 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 | #define LOG_TAG "IpPrefix" |
| 18 | |
| 19 | #include <binder/IpPrefix.h> |
| 20 | #include <vector> |
| 21 | |
| 22 | #include <binder/IBinder.h> |
| 23 | #include <binder/Parcel.h> |
| 24 | #include <log/log.h> |
| 25 | #include <utils/Errors.h> |
| 26 | |
| 27 | using android::BAD_TYPE; |
| 28 | using android::BAD_VALUE; |
| 29 | using android::NO_ERROR; |
| 30 | using android::Parcel; |
| 31 | using android::status_t; |
| 32 | using android::UNEXPECTED_NULL; |
| 33 | using namespace ::android::binder; |
| 34 | |
| 35 | namespace android { |
| 36 | |
| 37 | namespace net { |
| 38 | |
| 39 | #define RETURN_IF_FAILED(calledOnce) \ |
| 40 | { \ |
| 41 | status_t returnStatus = calledOnce; \ |
| 42 | if (returnStatus) { \ |
| 43 | ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \ |
| 44 | return returnStatus; \ |
| 45 | } \ |
| 46 | } |
| 47 | |
| 48 | status_t IpPrefix::writeToParcel(Parcel* parcel) const { |
| 49 | /* |
| 50 | * Keep implementation in sync with writeToParcel() in |
| 51 | * frameworks/base/core/java/android/net/IpPrefix.java. |
| 52 | */ |
| 53 | std::vector<uint8_t> byte_vector; |
| 54 | |
| 55 | if (mIsIpv6) { |
| 56 | const uint8_t* bytes = reinterpret_cast<const uint8_t*>(&mUnion.mIn6Addr); |
| 57 | byte_vector.insert(byte_vector.end(), bytes, bytes+sizeof(mUnion.mIn6Addr)); |
| 58 | } else { |
| 59 | const uint8_t* bytes = reinterpret_cast<const uint8_t*>(&mUnion.mInAddr); |
| 60 | byte_vector.insert(byte_vector.end(), bytes, bytes+sizeof(mUnion.mIn6Addr)); |
| 61 | } |
| 62 | |
| 63 | RETURN_IF_FAILED(parcel->writeByteVector(byte_vector)); |
| 64 | RETURN_IF_FAILED(parcel->writeInt32(static_cast<int32_t>(mPrefixLength))); |
| 65 | |
| 66 | return NO_ERROR; |
| 67 | } |
| 68 | |
| 69 | status_t IpPrefix::readFromParcel(const Parcel* parcel) { |
| 70 | /* |
| 71 | * Keep implementation in sync with readFromParcel() in |
| 72 | * frameworks/base/core/java/android/net/IpPrefix.java. |
| 73 | */ |
| 74 | std::vector<uint8_t> byte_vector; |
| 75 | |
| 76 | RETURN_IF_FAILED(parcel->readByteVector(&byte_vector)); |
| 77 | RETURN_IF_FAILED(parcel->readInt32(&mPrefixLength)); |
| 78 | |
| 79 | if (byte_vector.size() == 16) { |
| 80 | mIsIpv6 = true; |
| 81 | memcpy((void*)&mUnion.mIn6Addr, &byte_vector[0], sizeof(mUnion.mIn6Addr)); |
| 82 | |
| 83 | } else if (byte_vector.size() == 4) { |
| 84 | mIsIpv6 = false; |
| 85 | memcpy((void*)&mUnion.mInAddr, &byte_vector[0], sizeof(mUnion.mInAddr)); |
| 86 | |
| 87 | } else { |
| 88 | ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \ |
| 89 | return BAD_VALUE; |
| 90 | } |
| 91 | |
| 92 | return NO_ERROR; |
| 93 | } |
| 94 | |
| 95 | const struct in6_addr& IpPrefix::getAddressAsIn6Addr() const |
| 96 | { |
| 97 | return mUnion.mIn6Addr; |
| 98 | } |
| 99 | |
| 100 | const struct in_addr& IpPrefix::getAddressAsInAddr() const |
| 101 | { |
| 102 | return mUnion.mInAddr; |
| 103 | } |
| 104 | |
| 105 | bool IpPrefix::getAddressAsIn6Addr(struct in6_addr* addr) const |
| 106 | { |
| 107 | if (isIpv6()) { |
| 108 | *addr = mUnion.mIn6Addr; |
| 109 | return true; |
| 110 | } |
| 111 | return false; |
| 112 | } |
| 113 | |
| 114 | bool IpPrefix::getAddressAsInAddr(struct in_addr* addr) const |
| 115 | { |
| 116 | if (isIpv4()) { |
| 117 | *addr = mUnion.mInAddr; |
| 118 | return true; |
| 119 | } |
| 120 | return false; |
| 121 | } |
| 122 | |
| 123 | bool IpPrefix::isIpv6() const |
| 124 | { |
| 125 | return mIsIpv6; |
| 126 | } |
| 127 | |
| 128 | bool IpPrefix::isIpv4() const |
| 129 | { |
| 130 | return !mIsIpv6; |
| 131 | } |
| 132 | |
| 133 | int32_t IpPrefix::getPrefixLength() const |
| 134 | { |
| 135 | return mPrefixLength; |
| 136 | } |
| 137 | |
| 138 | void IpPrefix::setAddress(const struct in6_addr& addr) |
| 139 | { |
| 140 | mUnion.mIn6Addr = addr; |
| 141 | mIsIpv6 = true; |
| 142 | } |
| 143 | |
| 144 | void IpPrefix::setAddress(const struct in_addr& addr) |
| 145 | { |
| 146 | mUnion.mInAddr = addr; |
| 147 | mIsIpv6 = false; |
| 148 | } |
| 149 | |
| 150 | void IpPrefix::setPrefixLength(int32_t prefix) |
| 151 | { |
| 152 | mPrefixLength = prefix; |
| 153 | } |
| 154 | |
| 155 | bool operator==(const IpPrefix& lhs, const IpPrefix& rhs) |
| 156 | { |
| 157 | if (lhs.mIsIpv6 != rhs.mIsIpv6) { |
| 158 | return false; |
| 159 | } |
| 160 | |
| 161 | if (lhs.mPrefixLength != rhs.mPrefixLength) { |
| 162 | return false; |
| 163 | } |
| 164 | |
| 165 | if (lhs.mIsIpv6) { |
| 166 | return 0 == memcmp(lhs.mUnion.mIn6Addr.s6_addr, rhs.mUnion.mIn6Addr.s6_addr, sizeof(struct in6_addr)); |
| 167 | } |
| 168 | |
| 169 | return 0 == memcmp(&lhs.mUnion.mInAddr, &rhs.mUnion.mInAddr, sizeof(struct in_addr)); |
| 170 | } |
| 171 | |
| 172 | } // namespace net |
| 173 | |
| 174 | } // namespace android |