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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* 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/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_NODE_HPP
#define ZT_NODE_HPP
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <map>
#include "Constants.hpp"
#include "../include/ZeroTierOne.h"
#include "InetAddress.hpp"
#include "Mutex.hpp"
#include "MAC.hpp"
#include "Network.hpp"
namespace ZeroTier {
class RuntimeEnvironment;
/**
* Implementation of Node object as defined in CAPI
*
* The pointer returned by ZT1_Node_new() is an instance of this class.
*/
class Node
{
public:
Node(
uint64_t now,
ZT1_DataStoreGetFunction *dataStoreGetFunction,
ZT1_DataStorePutFunction *dataStorePutFunction,
ZT1_WirePacketSendFunction *wirePacketSendFunction,
ZT1_VirtualNetworkFrameFunction *virtualNetworkFrameFunction,
ZT1_VirtualNetworkConfigCallback *virtualNetworkConfigCallback,
ZT1_StatusCallback *statusCallback);
~Node();
// Public API Functions ----------------------------------------------------
ZT1_ResultCode processWirePacket(
uint64_t now,
const struct sockaddr_storage *remoteAddress,
int linkDesperation,
const void *packetData,
unsigned int packetLength,
uint64_t *nextCallDeadline);
ZT1_ResultCode processVirtualNetworkFrame(
uint64_t now,
uint64_t nwid,
uint64_t sourceMac,
uint64_t destMac,
unsigned int etherType,
unsigned int vlanId,
const void *frameData,
unsigned int frameLength,
uint64_t *nextCallDeadline);
ZT1_Resultcode processNothing(uint64_t now,uint64_t *nextCallDeadline);
ZT1_ResultCode join(uint64_t nwid);
ZT1_ResultCode leave(uint64_t nwid);
ZT1_ResultCode multicastSubscribe(ZT1_Node *node,uint64_t nwid,uint64_t multicastGroup,unsigned long multicastAdi = 0);
ZT1_ResultCode multicastUnsubscribe(ZT1_Node *node,uint64_t nwid,uint64_t multicastGroup,unsigned long multicastAdi = 0);
void status(ZT1_NodeStatus *status);
ZT1_PeerList *peers();
ZT1_VirtualNetworkConfig *networkConfig(uint64_t nwid);
ZT1_VirtualNetworkList *listNetworks();
void freeQueryResult(void *qr);
void setNetconfMaster(void *networkConfigMasterInstance);
// Internal functions ------------------------------------------------------
/**
* @return Time as of last call to run()
*/
inline uint64_t now() const throw() { return _now; }
/**
* @return Current level of desperation
*/
inline int desperation() const throw() { return (int)((_now - _timeOfLastPrivilgedPacket) / ZT_DESPERATION_INCREMENT); }
/**
* Called to update last packet receive time whenever a packet is received
*
* @param fromPrivilegedPeer If true, peer is a supernode or federated hub (a.k.a. an upstream link)
*/
inline void packetReceived(bool fromPrivilegedPeer)
throw()
{
const uint64_t n = _now;
_timeOfLastPacketReceived = n;
if (fromPrivilegedPeer)
_timeOfLastPrivilgedPacket = n;
}
/**
* @return Most recent time of any packet receipt
*/
inline uint64_t timeOfLastPacketReceived() const throw() { return _timeOfLastPacketReceived; }
/**
* @return Timestamp of last packet received from a supernode or hub (upstream link)
*/
inline uint64_t timeOfLastPrivilgedPacket() const throw() { return _timeOfLastPrivilgedPacket; }
/**
* Enqueue a ZeroTier message to be sent
*
* @param addr Destination address
* @param data Packet data
* @param len Packet length
*/
inline void putPacket(const InetAddress &addr,const void *data,unsigned int len)
{
_wirePacketSendFunction(
reinterpret_cast<ZT1_Node *>(this),
reinterpret_cast<const struct sockaddr_storage *>(&addr),
this->desperation(),
(int)((++_spamCounter % ZT_DESPERATION_SPAM_EVERY) == 0),
data,
len);
}
/**
* Enqueue a frame to be injected into a tap device (port)
*
* @param nwid Network ID
* @param source Source MAC
* @param dest Destination MAC
* @param etherType 16-bit ethernet type
* @param vlanId VLAN ID or 0 if none
* @param data Frame data
* @param len Frame length
*/
inline void putFrame(uint64_t nwid,const MAC &source,const MAC &dest,unsigned int etherType,unsigned int vlanId,const void *data,unsigned int len)
{
_virtualNetworkFrameFunction(
reinterpret_cast<ZT1_Node *>(this),
nwid,
source.toInt(),
dest.toInt(),
etherType,
vlanId,
data,
len);
}
/**
* @param nwid Network ID
* @return Network instance
*/
inline SharedPtr<Network> network(uint64_t nwid)
{
Mutex::Lock _l(_networks_m);
std::map< uint64_t,SharedPtr<Network> >::iterator nw(_networks.find(nwid));
return ((nw == _networks.end()) ? SharedPtr<Network>() : nw->second);
}
inline bool dataStorePut(const char *name,const void *data,unsigned int len,bool secure)
{
}
inline bool dataStorePut(const char *name,const std::string &data,bool secure) { return dataStorePut(name,(const void *)data.data(),(unsigned int)data.length(),secure); }
inline std::string dataStoreGet(const char *name)
{
}
inline void dataStoreDelete(const char *name)
{
}
private:
RuntimeEnvironment *RR;
ZT1_DataStoreGetFunction *_dataStoreGetFunction;
ZT1_DataStorePutFunction *_dataStorePutFunction;
ZT1_WirePacketSendFunction *_wirePacketSendFunction;
ZT1_VirtualNetworkFrameFunction *_virtualNetworkFrameFunction;
ZT1_VirtualNetworkConfigCallback *_virtualNetworkConfigCallback;
ZT1_StatusCallback *_statusCallback;
//Dictionary _localConfig; // persisted as local.conf
//Mutex _localConfig_m;
std::map< uint64_t,SharedPtr<Network> > _networks;
Mutex _networks_m;
volatile uint64_t _now; // time of last run()
volatile uint64_t _timeOfLastPacketReceived;
volatile _timeOfLastPrivilgedPacket;
volatile unsigned int _spamCounter; // used to "spam" every Nth packet
};
} // namespace ZeroTier
#endif
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