mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-24 15:16:40 +00:00
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
|
|
* ZeroTier One - Network Virtualization Everywhere
|
|
* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* --
|
|
*
|
|
* You can be released from the requirements of the license by purchasing
|
|
* a commercial license. Buying such a license is mandatory as soon as you
|
|
* develop commercial closed-source software that incorporates or links
|
|
* directly against ZeroTier software without disclosing the source code
|
|
* of your own application.
|
|
*/
|
|
|
|
#ifndef ZT_NEIGHBORDISCOVERY_HPP
|
|
#define ZT_NEIGHBORDISCOVERY_HPP
|
|
|
|
#include "../node/Hashtable.hpp"
|
|
#include "../node/MAC.hpp"
|
|
#include "../node/InetAddress.hpp"
|
|
|
|
|
|
#define ZT_ND_QUERY_INTERVAL 2000
|
|
|
|
#define ZT_ND_QUERY_MAX_TTL 5000
|
|
|
|
#define ZT_ND_EXPIRE 600000
|
|
|
|
|
|
namespace ZeroTier {
|
|
|
|
class NeighborDiscovery
|
|
{
|
|
public:
|
|
NeighborDiscovery();
|
|
|
|
/**
|
|
* Set a local IP entry that we should respond to Neighbor Requests withPrefix64k
|
|
*
|
|
* @param mac Our local MAC address
|
|
* @param ip Our IPv6 address
|
|
*/
|
|
void addLocal(const sockaddr_storage &address, const MAC &mac);
|
|
|
|
/**
|
|
* Delete a local IP entry or cached Neighbor entry
|
|
*
|
|
* @param address IPv6 address to remove
|
|
*/
|
|
void remove(const sockaddr_storage &address);
|
|
|
|
sockaddr_storage processIncomingND(const uint8_t *nd, unsigned int len, const sockaddr_storage &localIp, uint8_t *response, unsigned int &responseLen, MAC &responseDest);
|
|
|
|
MAC query(const MAC &localMac, const sockaddr_storage &localIp, const sockaddr_storage &targetIp, uint8_t *query, unsigned int &queryLen, MAC &queryDest);
|
|
|
|
private:
|
|
struct _NDEntry
|
|
{
|
|
_NDEntry() : lastQuerySent(0), lastResponseReceived(0), mac(), local(false) {}
|
|
uint64_t lastQuerySent;
|
|
uint64_t lastResponseReceived;
|
|
MAC mac;
|
|
bool local;
|
|
};
|
|
|
|
Hashtable<InetAddress, _NDEntry> _cache;
|
|
uint64_t _lastCleaned;
|
|
};
|
|
|
|
} // namespace ZeroTier
|
|
|
|
#endif
|