mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-22 22:32:22 +00:00
152 lines
3.5 KiB
C++
152 lines
3.5 KiB
C++
/*
|
|
* Copyright (c)2019 ZeroTier, Inc.
|
|
*
|
|
* Use of this software is governed by the Business Source License included
|
|
* in the LICENSE.TXT file in the project's root directory.
|
|
*
|
|
* Change Date: 2025-01-01
|
|
*
|
|
* On the date above, in accordance with the Business Source License, use
|
|
* of this software will be governed by version 2.0 of the Apache License.
|
|
*/
|
|
/****/
|
|
|
|
#ifndef ZT_LINUX_NETLINK_HPP
|
|
#define ZT_LINUX_NETLINK_HPP
|
|
|
|
#include "../node/Constants.hpp"
|
|
|
|
#ifdef __LINUX__
|
|
|
|
#include <vector>
|
|
#include <map>
|
|
#include <set>
|
|
|
|
#include <sys/socket.h>
|
|
#include <asm/types.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <sys/socket.h>
|
|
//#include <linux/if.h>
|
|
|
|
#include "../node/InetAddress.hpp"
|
|
#include "../node/MAC.hpp"
|
|
#include "Thread.hpp"
|
|
#include "../node/Hashtable.hpp"
|
|
#include "../node/Mutex.hpp"
|
|
|
|
|
|
namespace ZeroTier {
|
|
|
|
/**
|
|
* Interface with Linux's RTNETLINK
|
|
*/
|
|
class LinuxNetLink
|
|
{
|
|
private:
|
|
LinuxNetLink();
|
|
~LinuxNetLink();
|
|
|
|
public:
|
|
struct Route {
|
|
InetAddress target;
|
|
InetAddress via;
|
|
InetAddress src;
|
|
int ifidx;
|
|
|
|
inline bool operator==(const Route &r) const
|
|
{ return ((target == r.target)&&(via == r.via)&&(src == r.src)&&(ifidx == r.ifidx)); }
|
|
inline bool operator!=(const Route &r) const
|
|
{ return (!(*this == r)); }
|
|
inline bool operator<(const Route &r) const
|
|
{
|
|
if (target < r.target) {
|
|
return true;
|
|
} else if (target == r.target) {
|
|
if (via < r.via) {
|
|
return true;
|
|
} else if (via == r.via) {
|
|
if (src < r.src) {
|
|
return true;
|
|
} else if (src == r.src) {
|
|
return (ifidx < r.ifidx);
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
inline bool operator>(const Route &r) const
|
|
{ return (r < *this); }
|
|
inline bool operator<=(const Route &r) const
|
|
{ return !(r < *this); }
|
|
inline bool operator>=(const Route &r) const
|
|
{ return !(*this < r); }
|
|
};
|
|
|
|
static LinuxNetLink& getInstance()
|
|
{
|
|
static LinuxNetLink instance;
|
|
return instance;
|
|
}
|
|
|
|
LinuxNetLink(LinuxNetLink const&) = delete;
|
|
void operator=(LinuxNetLink const&) = delete;
|
|
|
|
void addRoute(const InetAddress &target, const InetAddress &via, const InetAddress &src, const char *ifaceName);
|
|
void delRoute(const InetAddress &target, const InetAddress &via, const InetAddress &src, const char *ifaceName);
|
|
|
|
void addAddress(const InetAddress &addr, const char *iface);
|
|
void removeAddress(const InetAddress &addr, const char *iface);
|
|
|
|
bool routeIsSet(const InetAddress &target, const InetAddress &via, const InetAddress &src, const char *ifname);
|
|
|
|
void threadMain() throw();
|
|
|
|
private:
|
|
int _doRecv(int fd);
|
|
|
|
void _processMessage(struct nlmsghdr *nlp, int nll);
|
|
void _routeAdded(struct nlmsghdr *nlp);
|
|
void _routeDeleted(struct nlmsghdr *nlp);
|
|
void _linkAdded(struct nlmsghdr *nlp);
|
|
void _linkDeleted(struct nlmsghdr *nlp);
|
|
void _ipAddressAdded(struct nlmsghdr *nlp);
|
|
void _ipAddressDeleted(struct nlmsghdr *nlp);
|
|
|
|
void _requestInterfaceList();
|
|
void _requestIPv4Routes();
|
|
void _requestIPv6Routes();
|
|
|
|
int _indexForInterface(const char *iface);
|
|
|
|
void _setSocketTimeout(int fd, int seconds = 1);
|
|
|
|
Thread _t;
|
|
bool _running;
|
|
|
|
uint32_t _seq;
|
|
|
|
std::map< InetAddress,std::set<LinuxNetLink::Route> > _routes;
|
|
Mutex _routes_m;
|
|
|
|
struct iface_entry {
|
|
iface_entry()
|
|
{ memset(this,0,sizeof(iface_entry)); }
|
|
int index;
|
|
char ifacename[16]; // IFNAMSIZ on Linux == 16
|
|
char mac[18];
|
|
char mac_bin[6];
|
|
unsigned int mtu;
|
|
};
|
|
Hashtable<int, iface_entry> _interfaces;
|
|
Mutex _if_m;
|
|
|
|
// socket communication vars;
|
|
int _fd;
|
|
struct sockaddr_nl _la;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif // ZT_LINUX_NETLINK_HPPS
|