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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2012-2013 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_NETWORK_HPP
#define _ZT_NETWORK_HPP
#include <string>
#include <set>
#include <vector>
#include <stdexcept>
#include "EthernetTap.hpp"
#include "Address.hpp"
#include "Mutex.hpp"
#include "InetAddress.hpp"
#include "Constants.hpp"
#include "SharedPtr.hpp"
#include "AtomicCounter.hpp"
#include "RuntimeEnvironment.hpp"
#include "MulticastGroup.hpp"
#include "NonCopyable.hpp"
#include "MAC.hpp"
namespace ZeroTier {
class NodeConfig;
/**
* Local network endpoint
*/
class Network : NonCopyable
{
friend class SharedPtr<Network>;
friend class NodeConfig;
private:
Network(const RuntimeEnvironment *renv,uint64_t id)
throw(std::runtime_error);
~Network();
public:
/**
* @return Network ID
*/
inline uint64_t id() const throw() { return _id; }
/**
* @return Ethernet tap
*/
inline EthernetTap &tap() throw() { return _tap; }
/**
* Get this network's members
*
* If this is an open network, membership isn't relevant and this doesn't
* mean much. If it's a closed network, frames will only be exchanged to/from
* members.
*
* @return Members of this network
*/
inline std::set<Address> members() const
{
Mutex::Lock _l(_lock);
return _members;
}
/**
* @param addr Address to check
* @return True if address is a member
*/
inline bool isMember(const Address &addr) const
throw()
{
Mutex::Lock _l(_lock);
return (_members.count(addr) > 0);
}
/**
* Shortcut to check open() and then isMember()
*
* @param addr Address to check
* @return True if network is open or if address is a member
*/
inline bool isAllowed(const Address &addr) const
throw()
{
Mutex::Lock _l(_lock);
return ((_open)||(_members.count(addr) > 0));
}
/**
* @return True if network is open (no membership required)
*/
inline bool open() const
throw()
{
Mutex::Lock _l(_lock);
return _open;
}
/**
* Update internal multicast group set and return true if changed
*
* @return True if internal multicast group set has changed
*/
inline bool updateMulticastGroups()
{
Mutex::Lock _l(_lock);
return _tap.updateMulticastGroups(_multicastGroups);
}
/**
* @return Latest set of multicast groups
*/
inline std::set<MulticastGroup> multicastGroups() const
{
Mutex::Lock _l(_lock);
return _multicastGroups;
}
private:
static void _CBhandleTapData(void *arg,const MAC &from,const MAC &to,unsigned int etherType,const Buffer<4096> &data);
const RuntimeEnvironment *_r;
uint64_t _id;
EthernetTap _tap;
std::set<Address> _members;
std::set<MulticastGroup> _multicastGroups;
bool _open;
Mutex _lock;
AtomicCounter __refCount;
};
} // naemspace ZeroTier
#endif
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