mirror of
https://github.com/zerotier/ZeroTierOne.git
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123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2018 ZeroTier, Inc. https://www.zerotier.com/
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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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* (at your option) 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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* --
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*
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* You can be released from the requirements of the license by purchasing
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* a commercial license. Buying such a license is mandatory as soon as you
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* develop commercial closed-source software that incorporates or links
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* directly against ZeroTier software without disclosing the source code
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* of your own application.
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*/
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#ifndef ZT_LINUX_NETLINK_HPP
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#define ZT_LINUX_NETLINK_HPP
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#include <vector>
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#include <bits/sockaddr.h>
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#include <asm/types.h>
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#include <linux/rtnetlink.h>
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#include <sys/socket.h>
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#include <linux/if.h>
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#include "../node/InetAddress.hpp"
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#include "../node/MAC.hpp"
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#include "Thread.hpp"
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#include "../node/Hashtable.hpp"
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namespace ZeroTier {
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struct route_entry {
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InetAddress target;
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InetAddress via;
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int if_index;
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char iface[IFNAMSIZ];
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};
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typedef std::vector<route_entry> RouteList;
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/**
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* Interface with Linux's RTNETLINK
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*/
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class LinuxNetLink
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{
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private:
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LinuxNetLink();
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~LinuxNetLink();
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public:
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static LinuxNetLink& getInstance()
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{
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static LinuxNetLink instance;
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return instance;
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}
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LinuxNetLink(LinuxNetLink const&) = delete;
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void operator=(LinuxNetLink const&) = delete;
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void addRoute(const InetAddress &target, const InetAddress &via, const char *ifaceName);
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void delRoute(const InetAddress &target, const InetAddress &via, const char *ifaceName);
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RouteList getIPV4Routes() const;
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RouteList getIPV6Routes() const;
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// void addInterface(const char *iface, unsigned int mtu, const MAC &mac);
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// void removeInterface(const char *iface);
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void addAddress(const InetAddress &addr, const char *iface);
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void removeAddress(const InetAddress &addr, const char *iface);
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void threadMain() throw();
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private:
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void _processMessage(struct nlmsghdr *nlp, int nll);
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void _routeAdded(struct nlmsghdr *nlp);
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void _routeDeleted(struct nlmsghdr *nlp);
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void _linkAdded(struct nlmsghdr *nlp);
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void _linkDeleted(struct nlmsghdr *nlp);
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void _ipAddressAdded(struct nlmsghdr *nlp);
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void _ipAddressDeleted(struct nlmsghdr *nlp);
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void _requestInterfaceList();
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void _requestIPv4Routes();
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void _requestIPv6Routes();
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Thread _t;
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bool _running;
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RouteList _routes_ipv4;
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RouteList _routes_ipv6;
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uint32_t _seq;
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struct iface_entry {
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int index;
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char ifacename[IFNAMSIZ];
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char mac[18];
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char mac_bin[6];
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unsigned int mtu;
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};
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Hashtable<int, iface_entry> _interfaces;
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// socket communication vars;
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int _fd;
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struct sockaddr_nl _la;
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};
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}
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#endif // ZT_LINUX_NETLINK_HPPS
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