Work in progress on cleaning up netconf mess in node code...
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4 changed files with 225 additions and 23 deletions
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node/NetworkConfig.hpp
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node/NetworkConfig.hpp
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/*
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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_NETWORKCONFIG_HPP
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#define _ZT_NETWORKCONFIG_HPP
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#include <set>
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#include <string>
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#include <stdexcept>
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#include "Dictionary.hpp"
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#include "InetAddress.hpp"
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#include "AtomicCounter.hpp"
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#include "SharedPtr.hpp"
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namespace ZeroTier {
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// These are short to fit in packets with plenty of room to spare
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#define ZT_NETWORKCONFIG_DICT_KEY_ALLOWED_ETHERNET_TYPES "et"
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#define ZT_NETWORKCONFIG_DICT_KEY_NETWORK_ID "nwid"
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#define ZT_NETWORKCONFIG_DICT_KEY_TIMESTAMP "ts"
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#define ZT_NETWORKCONFIG_DICT_KEY_ISSUED_TO "id"
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#define ZT_NETWORKCONFIG_DICT_KEY_MULTICAST_PREFIX_BITS "mpb"
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#define ZT_NETWORKCONFIG_DICT_KEY_MULTICAST_DEPTH "md"
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#define ZT_NETWORKCONFIG_DICT_KEY_ARP_CACHE_TTL "cARP"
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#define ZT_NETWORKCONFIG_DICT_KEY_NDP_CACHE_TTL "cNDP"
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#define ZT_NETWORKCONFIG_DICT_KEY_EMULATE_ARP "eARP"
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#define ZT_NETWORKCONFIG_DICT_KEY_EMULATE_NDP "eNDP"
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#define ZT_NETWORKCONFIG_DICT_KEY_IS_OPEN "o"
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#define ZT_NETWORKCONFIG_DICT_KEY_NAME "name"
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#define ZT_NETWORKCONFIG_DICT_KEY_DESC "desc"
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#define ZT_NETWORKCONFIG_DICT_KEY_IPV4_STATIC "v4s"
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#define ZT_NETWORKCONFIG_DICT_KEY_IPV6_STATIC "v6s"
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#define ZT_NETWORKCONFIG_DICT_KEY_MULTICAST_RATES "mr"
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/**
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* Network configuration received from netconf master nodes
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*
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* This is designed to work as an immutable value object held in a shared
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* pointer so that it can be both updated and used without too much mutex
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* boogie.
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*/
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class NetworkConfig
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{
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public:
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friend class SharedPtr<NetworkConfig>;
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/**
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* @param d Dictionary containing configuration
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* @throws std::invalid_argument Invalid configuration
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*/
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NetworkConfig(const Dictionary &d)
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throw(std::invalid_argument)
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{
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_fromDictionary(d);
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}
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/**
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* @param etherType Ethernet frame type to check
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* @return True if allowed on this network
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*/
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inline bool allowsEtherType(unsigned int etherType)
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throw()
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{
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if ((!etherType)||(etherType > 0xffff)) // sanity checks
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return false;
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else if ((_etWhitelist[0] & 1)) // prsence of 0 in set inverts sense: whitelist becomes blacklist
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return (!(_etWhitelist[etherType >> 3] & (1 << (etherType & 7))));
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else return ((_etWhitelist[etherType >> 3] & (1 << (etherType & 7))));
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}
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std::set<unsigned int> allowedEtherTypes() const;
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inline uint64_t networkId() const throw() { return _nwid; }
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inline uint64_t timestamp() const throw() { return _timestamp; }
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inline const Address &issuedTo() const throw() { return _issuedTo; }
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inline unsigned int multicastPrefixBits() const throw() { return _multicastPrefixBits; }
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inline unsigned int multicastDepth() const throw() { return _multicastDepth; }
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inline unsigned int arpCacheTtl() const throw() { return _arpCacheTtl; }
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inline unsigned int ndpCacheTtl() const throw() { return _ndpCacheTtl; }
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inline bool emulateArp() const throw() { return _emulateArp; }
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inline bool emulateNdp() const throw() { return _emulateNdp; }
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inline bool isOpen() const throw() { return _isOpen; }
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inline const std::string &name() const throw() { return _name; }
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inline const std::string &description() const throw() { return _description; }
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inline const std::set<InetAddress> &staticIps() const throw() { return _staticIps; }
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inline const MulticastRateTable &multicastRates() const throw() { return _multicastRates; }
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private:
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NetworkConfig() {}
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~NetworkConfig() {}
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void _fromDictionary(const Dictionary &d)
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throw(std::invalid_argument);
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unsigned char _etWhitelist[65536 / 8];
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uint64_t _nwid;
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uint64_t _timestamp;
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Address _issuedTo;
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unsigned int _multicastPrefixBits;
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unsigned int _multicastDepth;
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unsigned int _arpCacheTtl;
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unsigned int _ndpCacheTtl;
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bool _emulateArp;
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bool _emulateNdp;
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bool _isOpen;
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std::string _name;
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std::string _description;
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std::set<InetAddress> _staticIps;
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MulticastRateTable _multicastRates;
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AtomicCounter __refCount;
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};
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} // namespace ZeroTier
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#endif
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