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96 lines
3.0 KiB
96 lines
3.0 KiB
/* |
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* ZeroTier One - Network Virtualization Everywhere |
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* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/ |
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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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#ifndef ZT_SELFAWARENESS_HPP |
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#define ZT_SELFAWARENESS_HPP |
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#include "Constants.hpp" |
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#include "InetAddress.hpp" |
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#include "Hashtable.hpp" |
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#include "Address.hpp" |
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#include "Mutex.hpp" |
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namespace ZeroTier { |
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class RuntimeEnvironment; |
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/** |
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* Tracks changes to this peer's real world addresses |
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*/ |
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class SelfAwareness |
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{ |
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public: |
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SelfAwareness(const RuntimeEnvironment *renv); |
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~SelfAwareness(); |
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/** |
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* Called when a trusted remote peer informs us of our external network address |
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* |
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* @param reporter ZeroTier address of reporting peer |
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* @param reporterPhysicalAddress Physical address that reporting peer seems to have |
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* @param myPhysicalAddress Physical address that peer says we have |
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* @param trusted True if this peer is trusted as an authority to inform us of external address changes |
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* @param now Current time |
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*/ |
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void iam(const Address &reporter,const InetAddress &reporterPhysicalAddress,const InetAddress &myPhysicalAddress,bool trusted,uint64_t now); |
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/** |
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* Clean up database periodically |
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* |
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* @param now Current time |
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*/ |
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void clean(uint64_t now); |
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/** |
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* If we appear to be behind a symmetric NAT, get predictions for possible external endpoints |
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* |
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* @return Symmetric NAT predictions or empty vector if none |
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*/ |
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std::vector<InetAddress> getSymmetricNatPredictions(); |
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private: |
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struct PhySurfaceKey |
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{ |
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Address reporter; |
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InetAddress reporterPhysicalAddress; |
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InetAddress::IpScope scope; |
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PhySurfaceKey() : reporter(),scope(InetAddress::IP_SCOPE_NONE) {} |
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PhySurfaceKey(const Address &r,const InetAddress &ra,InetAddress::IpScope s) : reporter(r),reporterPhysicalAddress(ra),scope(s) {} |
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inline unsigned long hashCode() const throw() { return ((unsigned long)reporter.toInt() + (unsigned long)scope); } |
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inline bool operator==(const PhySurfaceKey &k) const throw() { return ((reporter == k.reporter)&&(reporterPhysicalAddress == k.reporterPhysicalAddress)&&(scope == k.scope)); } |
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}; |
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struct PhySurfaceEntry |
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{ |
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InetAddress mySurface; |
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uint64_t ts; |
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PhySurfaceEntry() : mySurface(),ts(0) {} |
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PhySurfaceEntry(const InetAddress &a,const uint64_t t) : mySurface(a),ts(t) {} |
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}; |
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const RuntimeEnvironment *RR; |
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Hashtable< PhySurfaceKey,PhySurfaceEntry > _phy; |
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Mutex _phy_m; |
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}; |
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} // namespace ZeroTier |
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#endif
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