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