174 lines
4.5 KiB
C++
174 lines
4.5 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "IpPrefix"
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#include <binder/IpPrefix.h>
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#include <vector>
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#include <binder/IBinder.h>
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#include <binder/Parcel.h>
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#include <log/log.h>
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#include <utils/Errors.h>
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using android::BAD_TYPE;
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using android::BAD_VALUE;
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using android::NO_ERROR;
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using android::Parcel;
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using android::status_t;
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using android::UNEXPECTED_NULL;
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using namespace ::android::binder;
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namespace android {
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namespace net {
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#define RETURN_IF_FAILED(calledOnce) \
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{ \
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status_t returnStatus = calledOnce; \
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if (returnStatus) { \
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ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \
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return returnStatus; \
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} \
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}
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status_t IpPrefix::writeToParcel(Parcel* parcel) const {
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/*
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* Keep implementation in sync with writeToParcel() in
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* frameworks/base/core/java/android/net/IpPrefix.java.
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*/
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std::vector<uint8_t> byte_vector;
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if (mIsIpv6) {
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const uint8_t* bytes = reinterpret_cast<const uint8_t*>(&mUnion.mIn6Addr);
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byte_vector.insert(byte_vector.end(), bytes, bytes+sizeof(mUnion.mIn6Addr));
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} else {
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const uint8_t* bytes = reinterpret_cast<const uint8_t*>(&mUnion.mInAddr);
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byte_vector.insert(byte_vector.end(), bytes, bytes+sizeof(mUnion.mIn6Addr));
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}
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RETURN_IF_FAILED(parcel->writeByteVector(byte_vector));
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RETURN_IF_FAILED(parcel->writeInt32(static_cast<int32_t>(mPrefixLength)));
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return NO_ERROR;
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}
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status_t IpPrefix::readFromParcel(const Parcel* parcel) {
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/*
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* Keep implementation in sync with readFromParcel() in
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* frameworks/base/core/java/android/net/IpPrefix.java.
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*/
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std::vector<uint8_t> byte_vector;
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RETURN_IF_FAILED(parcel->readByteVector(&byte_vector));
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RETURN_IF_FAILED(parcel->readInt32(&mPrefixLength));
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if (byte_vector.size() == 16) {
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mIsIpv6 = true;
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memcpy((void*)&mUnion.mIn6Addr, &byte_vector[0], sizeof(mUnion.mIn6Addr));
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} else if (byte_vector.size() == 4) {
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mIsIpv6 = false;
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memcpy((void*)&mUnion.mInAddr, &byte_vector[0], sizeof(mUnion.mInAddr));
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} else {
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ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \
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return BAD_VALUE;
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}
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return NO_ERROR;
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}
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const struct in6_addr& IpPrefix::getAddressAsIn6Addr() const
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{
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return mUnion.mIn6Addr;
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}
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const struct in_addr& IpPrefix::getAddressAsInAddr() const
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{
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return mUnion.mInAddr;
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}
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bool IpPrefix::getAddressAsIn6Addr(struct in6_addr* addr) const
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{
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if (isIpv6()) {
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*addr = mUnion.mIn6Addr;
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return true;
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}
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return false;
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}
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bool IpPrefix::getAddressAsInAddr(struct in_addr* addr) const
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{
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if (isIpv4()) {
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*addr = mUnion.mInAddr;
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return true;
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}
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return false;
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}
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bool IpPrefix::isIpv6() const
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{
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return mIsIpv6;
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}
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bool IpPrefix::isIpv4() const
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{
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return !mIsIpv6;
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}
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int32_t IpPrefix::getPrefixLength() const
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{
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return mPrefixLength;
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}
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void IpPrefix::setAddress(const struct in6_addr& addr)
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{
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mUnion.mIn6Addr = addr;
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mIsIpv6 = true;
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}
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void IpPrefix::setAddress(const struct in_addr& addr)
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{
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mUnion.mInAddr = addr;
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mIsIpv6 = false;
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}
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void IpPrefix::setPrefixLength(int32_t prefix)
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{
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mPrefixLength = prefix;
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}
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bool operator==(const IpPrefix& lhs, const IpPrefix& rhs)
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{
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if (lhs.mIsIpv6 != rhs.mIsIpv6) {
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return false;
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}
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if (lhs.mPrefixLength != rhs.mPrefixLength) {
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return false;
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}
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if (lhs.mIsIpv6) {
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return 0 == memcmp(lhs.mUnion.mIn6Addr.s6_addr, rhs.mUnion.mIn6Addr.s6_addr, sizeof(struct in6_addr));
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}
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return 0 == memcmp(&lhs.mUnion.mInAddr, &rhs.mUnion.mInAddr, sizeof(struct in_addr));
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}
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} // namespace net
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} // namespace android
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