81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
//
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// netlink.hpp
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//
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// Copyright (c) 2019 2020 Andrea Bondavalli. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#ifndef _NETLINK_HPP_
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#define _NETLINK_HPP_
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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template <typename Protocol>
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class nl_endpoint {
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private:
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sockaddr_nl sockaddr_{.nl_family = AF_NETLINK};
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public:
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using protocol_type = Protocol;
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using data_type = boost::asio::detail::socket_addr_type;
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nl_endpoint() {
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sockaddr_.nl_groups = 0;
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sockaddr_.nl_pid = getpid();
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}
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nl_endpoint(int group, int pid = getpid()) {
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sockaddr_.nl_groups = group;
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sockaddr_.nl_pid = pid;
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}
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protocol_type protocol() const { return protocol_type(); }
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data_type* data() { return reinterpret_cast<struct sockaddr*>(&sockaddr_); }
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const data_type* data() const {
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return reinterpret_cast<const struct sockaddr*>(&sockaddr_);
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}
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std::size_t size() const { return sizeof(sockaddr_); }
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void resize(std::size_t size) { /* nothing we can do here */
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}
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std::size_t capacity() const { return sizeof(sockaddr_); }
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};
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class nl_protocol {
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public:
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nl_protocol() : proto_(0) {}
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explicit nl_protocol(int proto) : proto_(proto) {}
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int type() const { return SOCK_RAW; }
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int protocol() const { return proto_; }
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int family() const { return PF_NETLINK; }
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using endpoint = nl_endpoint<nl_protocol>;
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using socket = boost::asio::basic_raw_socket<nl_protocol>;
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private:
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int proto_;
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};
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#endif
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