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https://github.com/zerotier/ZeroTierOne.git
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Drop old Demarc.cpp code.
This commit is contained in:
Adam Ierymenko
parent
bd749e040d
commit
8adbbe092d
216
node/Demarc.cpp
216
node/Demarc.cpp
@ -1,216 +0,0 @@
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/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2011-2014 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 <vector>
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#include "Constants.hpp"
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#ifdef __WINDOWS__
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#include <WinSock2.h>
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#include <Windows.h>
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#endif
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#include "Demarc.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "Logger.hpp"
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#include "UdpSocket.hpp"
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#include "InetAddress.hpp"
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#include "Switch.hpp"
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#include "Buffer.hpp"
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#include "CMWC4096.hpp"
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namespace ZeroTier {
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const Demarc::Port Demarc::ANY_PORT = (Port)0xffffffffffffffffULL;
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const Demarc::Port Demarc::NULL_PORT = (Port)0;
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Demarc::Demarc(const RuntimeEnvironment *renv) :
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_r(renv)
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{
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}
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Demarc::~Demarc()
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{
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for(std::map< Port,DemarcPortObj >::iterator pe(_ports.begin());pe!=_ports.end();++pe) {
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switch (pe->second.type) {
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case PORT_TYPE_UDP_SOCKET_V4:
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case PORT_TYPE_UDP_SOCKET_V6:
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delete ((UdpSocket *)pe->second.obj);
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break;
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case PORT_TYPE_LOCAL_ETHERNET:
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case PORT_TYPE_RELAY_TUNNEL:
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break;
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}
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}
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}
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std::string Demarc::describe(Demarc::Port p)
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{
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char buf[64];
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switch ((DemarcPortType)(((uint64_t)p) >> 60)) {
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case PORT_TYPE_UDP_SOCKET_V4:
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Utils::snprintf(buf,sizeof(buf),"udp/4/%d",(int)((uint64_t)p & 0xffff));
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return std::string(buf);
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case PORT_TYPE_UDP_SOCKET_V6:
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Utils::snprintf(buf,sizeof(buf),"udp/6/%d",(int)((uint64_t)p & 0xffff));
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return std::string(buf);
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case PORT_TYPE_LOCAL_ETHERNET:
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return std::string("ethernet");
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case PORT_TYPE_RELAY_TUNNEL:
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return std::string("relay");
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}
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return std::string("(null)");
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}
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bool Demarc::has(Port p) const
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throw()
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{
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Mutex::Lock _l(_ports_m);
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return (_ports.count(p) != 0);
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}
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bool Demarc::bindLocalUdp(unsigned int localPort)
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{
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Mutex::Lock _l(_ports_m);
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uint64_t v4p = ((uint64_t)PORT_TYPE_UDP_SOCKET_V4 << 60) | (uint64_t)localPort;
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uint64_t v6p = ((uint64_t)PORT_TYPE_UDP_SOCKET_V6 << 60) | (uint64_t)localPort;
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if ((_ports.count((Port)v4p))||(_ports.count((Port)v6p)))
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return true; // port already bound
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UdpSocket *v4 = (UdpSocket *)0;
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try {
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DemarcPortObj *v4r = &(_ports[(Port)v4p]);
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v4r->port = (Port)v4p;
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v4r->parent = this;
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v4r->obj = v4 = new UdpSocket(false,localPort,false,&Demarc::_CBudpSocketPacketHandler,v4r);
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v4r->type = PORT_TYPE_UDP_SOCKET_V4;
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} catch ( ... ) {
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_ports.erase((Port)v4p);
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v4 = (UdpSocket *)0;
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}
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UdpSocket *v6 = (UdpSocket *)0;
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try {
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DemarcPortObj *v6r = &(_ports[(Port)v6p]);
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v6r->port = (Port)v6p;
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v6r->parent = this;
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v6r->obj = v6 = new UdpSocket(false,localPort,true,&Demarc::_CBudpSocketPacketHandler,v6r);
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v6r->type = PORT_TYPE_UDP_SOCKET_V6;
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} catch ( ... ) {
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_ports.erase((Port)v6p);
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v6 = (UdpSocket *)0;
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}
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return ((v4)||(v6));
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}
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Demarc::Port Demarc::pick(const InetAddress &to) const
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throw()
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{
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Mutex::Lock _l(_ports_m);
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try {
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std::vector< std::map< Port,DemarcPortObj >::const_iterator > possibilities;
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for(std::map< Port,DemarcPortObj >::const_iterator pe(_ports.begin());pe!=_ports.end();++pe) {
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switch (pe->second.type) {
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case PORT_TYPE_UDP_SOCKET_V4:
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if (to.isV4())
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possibilities.push_back(pe);
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break;
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case PORT_TYPE_UDP_SOCKET_V6:
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if (to.isV6())
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possibilities.push_back(pe);
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break;
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default:
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break;
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}
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}
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if (possibilities.size())
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return possibilities[_r->prng->next32() % possibilities.size()]->first;
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else return NULL_PORT;
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} catch ( ... ) {
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return NULL_PORT;
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}
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}
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Demarc::Port Demarc::send(Demarc::Port fromPort,const InetAddress &to,const void *data,unsigned int len,int hopLimit) const
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throw()
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{
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_ports_m.lock();
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std::map< Port,DemarcPortObj >::const_iterator pe(_ports.find(fromPort));
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if (pe == _ports.end()) {
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try {
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std::vector< std::map< Port,DemarcPortObj >::const_iterator > possibilities;
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for(pe=_ports.begin();pe!=_ports.end();++pe) {
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switch (pe->second.type) {
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case PORT_TYPE_UDP_SOCKET_V4:
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if (to.isV4())
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possibilities.push_back(pe);
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break;
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case PORT_TYPE_UDP_SOCKET_V6:
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if (to.isV6())
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possibilities.push_back(pe);
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break;
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default:
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break;
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}
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}
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if (possibilities.size())
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pe = possibilities[_r->prng->next32() % possibilities.size()];
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else {
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_ports_m.unlock();
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return NULL_PORT;
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}
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} catch ( ... ) {
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_ports_m.unlock();
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return NULL_PORT;
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}
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}
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switch (pe->second.type) {
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case PORT_TYPE_UDP_SOCKET_V4:
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case PORT_TYPE_UDP_SOCKET_V6:
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_ports_m.unlock();
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if (((UdpSocket *)pe->second.obj)->send(to,data,len,hopLimit))
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return pe->first;
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return NULL_PORT;
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default:
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break;
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}
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_ports_m.unlock();
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return NULL_PORT;
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}
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void Demarc::_CBudpSocketPacketHandler(UdpSocket *sock,void *arg,const InetAddress &from,const void *data,unsigned int len)
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{
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if (!((DemarcPortObj *)arg)->parent->_r->shutdownInProgress)
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((DemarcPortObj *)arg)->parent->_r->sw->onRemotePacket(((DemarcPortObj *)arg)->port,from,Buffer<4096>(data,len));
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}
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} // namespace ZeroTier
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174
node/Demarc.hpp
174
node/Demarc.hpp
@ -1,174 +0,0 @@
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/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2011-2014 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_DEMARC_HPP
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#define ZT_DEMARC_HPP
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#include <stdlib.h>
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#include <stdint.h>
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#include <map>
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#include <string>
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#include "Mutex.hpp"
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#include "InetAddress.hpp"
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namespace ZeroTier {
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class RuntimeEnvironment;
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class UdpSocket;
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/**
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* Local demarcation point
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*
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* This holds and provides unique identifiers for all local communication
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* endpoints, such as UDP sockets, raw Ethernet sockets, tunnels to a relay
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* server, etc. It permits other code to refer to these via Port and forget
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* about what they actually are.
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*
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* All ports are closed when this class is destroyed.
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*
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* Its name "demarcation point" comes from the telco/cable terminology for
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* the box where wires terminate at a customer's property.
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*/
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class Demarc
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{
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public:
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/**
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* Local demarcation port
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*
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* NULL_PORT is zero so this can be used in if(port) to check for
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* a valid/known port.
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*/
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typedef uint64_t Port;
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/**
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* Port identifier used to refer to any port
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*/
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static const Port ANY_PORT;
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/**
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* Port identifier used to refer to null port / port not found
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*/
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static const Port NULL_PORT;
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Demarc(const RuntimeEnvironment *renv);
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~Demarc();
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/**
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* Describe a port
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*
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* This can describe even ports that are not bound, e.g. from serialized
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* data.
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*
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* @param p Port
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* @return Human-readable description of port
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*/
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static std::string describe(Port p);
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/**
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* @param p Port to check
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* @return True if this port is bound/connected/etc.
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*/
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bool has(Port p) const
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throw();
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/**
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* Bind local UDP port for both IPv4 and IPv6 traffic
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*
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* @param localPort Local IP port
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* @return True if successfully bound, or if already bound
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*/
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bool bindLocalUdp(unsigned int localPort);
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/**
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* Pick a port to send to an address of a given type
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*
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* @param to Destination address
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* @return Port or NULL_PORT if none
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*/
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Port pick(const InetAddress &to) const
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throw();
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/**
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* Send a packet
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*
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* If fromPort is ANY_PORT or if the port is not found, a random port is
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* chosen from those available matching the characteristics of the address
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* in 'to'.
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*
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* @param fromPort Port to send from
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* @param to Destination IP/port
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* @param data Data to send
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* @param len Length of data in bytes
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* @param hopLimit IP hop limit for UDP packets or -1 for max/unlimited
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* @return Port actually sent from or NULL_PORT on failure
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*/
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Port send(Port fromPort,const InetAddress &to,const void *data,unsigned int len,int hopLimit) const
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throw();
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/**
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* @param p Port
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* @return 64-bit integer suitable for serialization
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*/
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static inline uint64_t portToInt(const Port p) throw() { return (uint64_t)p; }
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/**
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* @param p 64-bit integer from serialized representation
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* @return Port suitable for use in code
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*/
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static inline Port intToPort(const uint64_t p) throw() { return (Port)p; }
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private:
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const RuntimeEnvironment *_r;
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static void _CBudpSocketPacketHandler(UdpSocket *sock,void *arg,const InetAddress &from,const void *data,unsigned int len);
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enum DemarcPortType
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{
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PORT_TYPE_UDP_SOCKET_V4 = 1,
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PORT_TYPE_UDP_SOCKET_V6 = 2,
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PORT_TYPE_LOCAL_ETHERNET = 3,
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PORT_TYPE_RELAY_TUNNEL = 4
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};
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// Variant holding instances of UdpSocket, etc.
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struct DemarcPortObj
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{
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Demarc::Port port;
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Demarc *parent;
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void *obj;
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DemarcPortType type;
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};
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std::map< Port,DemarcPortObj > _ports;
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Mutex _ports_m;
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};
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} // namespace ZeroTier
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#endif
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