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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2011-2014 ZeroTier Networks LLC
*
* 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_TESTETHERNETTAP_HPP
#define ZT_TESTETHERNETTAP_HPP
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include "../node/Constants.hpp"
#include "../node/EthernetTap.hpp"
#include "../node/Thread.hpp"
#include "../node/Mutex.hpp"
#include "MTQ.hpp"
namespace ZeroTier {
class TestEthernetTapFactory;
/**
* Dummy Ethernet tap
*
* This tap device prints the contents of packets it receives on stdout
* and also prints outgoing packets when they are injected. It does not
* connect to any real tap or other interface. It's useful for running
* test networks.
*/
class TestEthernetTap : public EthernetTap
{
public:
struct TestFrame
{
TestFrame() : from(),to(),timestamp(0),etherType(0),len(0) {}
TestFrame(const MAC &f,const MAC &t,const void *d,unsigned int et,unsigned int l) :
from(f),
to(t),
timestamp(Utils::now()),
etherType(et),
len(l)
{
memcpy(data,d,l);
}
MAC from;
MAC to;
uint64_t timestamp;
unsigned int etherType;
unsigned int len;
char data[4096];
};
TestEthernetTap(
const MAC &mac,
unsigned int mtu,
unsigned int metric,
uint64_t nwid,
const char *desiredDevice,
const char *friendlyName,
void (*handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &),
void *arg);
virtual ~TestEthernetTap();
virtual void setEnabled(bool en);
virtual bool enabled() const;
virtual bool addIP(const InetAddress &ip);
virtual bool removeIP(const InetAddress &ip);
virtual std::set<InetAddress> ips() const;
virtual void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
virtual std::string deviceName() const;
virtual void setFriendlyName(const char *friendlyName);
virtual bool updateMulticastGroups(std::set<MulticastGroup> &groups);
virtual bool injectPacketFromHost(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
inline uint64_t nwid() const { return _nwid; }
inline bool getNextReceivedFrame(TestFrame &v,unsigned long timeout) { return _gq.pop(v,timeout); }
void threadMain()
throw();
private:
uint64_t _nwid;
void (*_handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &);
void *_arg;
Thread _thread;
std::string _dev;
volatile bool _enabled;
MTQ<TestFrame> _pq;
MTQ<TestFrame> _gq;
};
} // namespace ZeroTier
#endif
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