mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-23 14:52:24 +00:00
162 lines
3.7 KiB
C++
162 lines
3.7 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2012-2013 ZeroTier Networks LLC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef _ZT_NETWORK_HPP
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#define _ZT_NETWORK_HPP
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#include <string>
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#include <set>
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#include <vector>
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#include <stdexcept>
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#include "EthernetTap.hpp"
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#include "Address.hpp"
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#include "Mutex.hpp"
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#include "InetAddress.hpp"
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#include "Constants.hpp"
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#include "SharedPtr.hpp"
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#include "AtomicCounter.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "MulticastGroup.hpp"
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#include "NonCopyable.hpp"
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#include "MAC.hpp"
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namespace ZeroTier {
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class NodeConfig;
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/**
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* Local membership to a network
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*/
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class Network : NonCopyable
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{
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friend class SharedPtr<Network>;
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friend class NodeConfig;
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private:
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Network(const RuntimeEnvironment *renv,uint64_t id)
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throw(std::runtime_error);
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~Network();
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public:
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/**
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* @return Network ID
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*/
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inline uint64_t id() const throw() { return _id; }
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/**
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* @return Ethernet tap
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*/
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inline EthernetTap &tap() throw() { return _tap; }
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/**
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* Get this network's members
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*
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* If this is an open network, membership isn't relevant and this doesn't
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* mean much. If it's a closed network, frames will only be exchanged to/from
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* members.
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*
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* @return Members of this network
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*/
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inline std::set<Address> members() const
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{
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Mutex::Lock _l(_lock);
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return _members;
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}
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/**
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* @param addr Address to check
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* @return True if address is a member
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*/
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inline bool isMember(const Address &addr) const
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throw()
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{
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Mutex::Lock _l(_lock);
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return (_members.count(addr) > 0);
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}
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/**
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* Shortcut to check open() and then isMember()
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*
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* @param addr Address to check
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* @return True if network is open or if address is a member
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*/
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inline bool isAllowed(const Address &addr) const
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throw()
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{
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Mutex::Lock _l(_lock);
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return ((_open)||(_members.count(addr) > 0));
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}
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/**
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* @return True if network is open (no membership required)
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*/
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inline bool open() const
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throw()
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{
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Mutex::Lock _l(_lock);
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return _open;
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}
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/**
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* Update internal multicast group set and return true if changed
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*
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* @return True if internal multicast group set has changed
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*/
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inline bool updateMulticastGroups()
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{
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Mutex::Lock _l(_lock);
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return _tap.updateMulticastGroups(_multicastGroups);
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}
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/**
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* @return Latest set of multicast groups
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*/
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inline std::set<MulticastGroup> multicastGroups() const
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{
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Mutex::Lock _l(_lock);
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return _multicastGroups;
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}
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private:
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static void _CBhandleTapData(void *arg,const MAC &from,const MAC &to,unsigned int etherType,const Buffer<4096> &data);
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const RuntimeEnvironment *_r;
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uint64_t _id;
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EthernetTap _tap;
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std::set<Address> _members;
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std::set<MulticastGroup> _multicastGroups;
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bool _open;
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Mutex _lock;
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AtomicCounter __refCount;
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};
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} // naemspace ZeroTier
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#endif
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