67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright (C) 2017 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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#pragma once
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#include <stdint.h>
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#include <type_traits>
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#include <vector>
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#include <linux/netlink.h>
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class NetlinkMessage {
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public:
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NetlinkMessage() = default;
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NetlinkMessage(uint16_t type, uint32_t sequence);
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NetlinkMessage(const char* data, size_t size);
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template<typename T,
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typename = std::enable_if_t<std::is_pod<T>::value>>
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bool getAttribute(int attributeId, T* value) const {
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return getAttribute(attributeId, value, sizeof(T));
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}
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uint16_t type() const;
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uint32_t sequence() const;
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nlmsghdr* header() {
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return reinterpret_cast<nlmsghdr*>(mData.data());
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}
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const nlmsghdr* header() const {
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return reinterpret_cast<const nlmsghdr*>(mData.data());
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}
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template<typename T>
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T* payload() {
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return reinterpret_cast<T*>(NLMSG_DATA(header()));
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}
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template<typename T>
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const T* payload() const {
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return reinterpret_cast<T*>(NLMSG_DATA(header()));
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}
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const uint8_t* data() const { return mData.data(); }
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size_t size() const { return mData.size(); }
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private:
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NetlinkMessage(const NetlinkMessage&) = delete;
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NetlinkMessage& operator=(const NetlinkMessage&) = delete;
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bool getAttribute(int attributeId, void* data, size_t size) const;
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std::vector<uint8_t> mData;
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};
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