mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-19 04:57:53 +00:00
155 lines
3.7 KiB
C++
155 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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#include "Peer.hpp"
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namespace ZeroTier {
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Peer::Peer() :
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_id(),
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_ipv4p(),
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_ipv6p(),
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_lastUnicastFrame(0),
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_lastMulticastFrame(0),
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_vMajor(0),
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_vMinor(0),
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_vRevision(0),
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_dirty(false)
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{
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}
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Peer::Peer(const Identity &myIdentity,const Identity &peerIdentity)
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throw(std::runtime_error) :
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_id(peerIdentity),
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_ipv4p(),
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_ipv6p(),
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_lastUnicastFrame(0),
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_lastMulticastFrame(0),
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_vMajor(0),
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_vMinor(0),
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_vRevision(0),
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_dirty(true)
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{
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if (!myIdentity.agree(peerIdentity,_keys,sizeof(_keys)))
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throw std::runtime_error("new peer identity key agreement failed");
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}
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void Peer::onReceive(const RuntimeEnvironment *_r,Demarc::Port localPort,const InetAddress &remoteAddr,unsigned int hops,Packet::Verb verb,uint64_t now)
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{
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if (!hops) { // direct packet
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WanPath *wp = (remoteAddr.isV4() ? &_ipv4p : &_ipv6p);
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wp->lastReceive = now;
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wp->localPort = localPort;
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if (!wp->fixed)
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wp->addr = remoteAddr;
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_dirty = true;
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}
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if (verb == Packet::VERB_FRAME) {
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_lastUnicastFrame = now;
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_dirty = true;
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} else if (verb == Packet::VERB_MULTICAST_FRAME) {
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_lastMulticastFrame = now;
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_dirty = true;
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}
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}
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bool Peer::send(const RuntimeEnvironment *_r,const void *data,unsigned int len,uint64_t now)
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{
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if ((_ipv6p.isActive(now))||((!(_ipv4p.addr))&&(_ipv6p.addr))) {
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if (_r->demarc->send(_ipv6p.localPort,_ipv6p.addr,data,len,-1)) {
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_ipv6p.lastSend = now;
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_dirty = true;
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return true;
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}
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}
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if (_ipv4p.addr) {
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if (_r->demarc->send(_ipv4p.localPort,_ipv4p.addr,data,len,-1)) {
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_ipv4p.lastSend = now;
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_dirty = true;
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return true;
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}
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}
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return false;
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}
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bool Peer::sendFirewallOpener(const RuntimeEnvironment *_r,uint64_t now)
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{
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bool sent = false;
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if (_ipv4p.addr) {
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if (_r->demarc->send(_ipv4p.localPort,_ipv4p.addr,"\0",1,ZT_FIREWALL_OPENER_HOPS)) {
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_ipv4p.lastFirewallOpener = now;
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_dirty = true;
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sent = true;
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}
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}
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if (_ipv6p.addr) {
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if (_r->demarc->send(_ipv6p.localPort,_ipv6p.addr,"\0",1,ZT_FIREWALL_OPENER_HOPS)) {
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_ipv6p.lastFirewallOpener = now;
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_dirty = true;
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sent = true;
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}
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}
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return sent;
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}
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void Peer::setPathAddress(const InetAddress &addr,bool fixed)
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{
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if (addr.isV4()) {
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_ipv4p.addr = addr;
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_ipv4p.fixed = fixed;
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_dirty = true;
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} else if (addr.isV6()) {
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_ipv6p.addr = addr;
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_ipv6p.fixed = fixed;
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_dirty = true;
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}
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}
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void Peer::clearFixedFlag(InetAddress::AddressType t)
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{
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switch(t) {
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case InetAddress::TYPE_NULL:
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_ipv4p.fixed = false;
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_ipv6p.fixed = false;
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_dirty = true;
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break;
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case InetAddress::TYPE_IPV4:
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_ipv4p.fixed = false;
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_dirty = true;
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break;
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case InetAddress::TYPE_IPV6:
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_ipv6p.fixed = false;
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_dirty = true;
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break;
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}
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}
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} // namespace ZeroTier
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