mirror of
https://github.com/NAStools/zerotierone.git
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114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/*
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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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#include "Constants.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "OutboundMulticast.hpp"
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#include "Switch.hpp"
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#include "Network.hpp"
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#include "CertificateOfMembership.hpp"
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#include "Node.hpp"
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namespace ZeroTier {
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void OutboundMulticast::init(
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const RuntimeEnvironment *RR,
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uint64_t timestamp,
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uint64_t nwid,
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const CertificateOfMembership *com,
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unsigned int limit,
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unsigned int gatherLimit,
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const MAC &src,
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const MulticastGroup &dest,
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unsigned int etherType,
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const void *payload,
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unsigned int len)
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{
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_timestamp = timestamp;
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_nwid = nwid;
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_limit = limit;
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uint8_t flags = 0;
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if (gatherLimit) flags |= 0x02;
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if (src) flags |= 0x04;
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/*
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TRACE(">>MC %.16llx INIT %.16llx/%s limit %u gatherLimit %u from %s to %s length %u com==%d",
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(unsigned long long)this,
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nwid,
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dest.toString().c_str(),
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limit,
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gatherLimit,
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(src) ? src.toString().c_str() : MAC(RR->identity.address(),nwid).toString().c_str(),
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dest.toString().c_str(),
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len,
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(com) ? 1 : 0);
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*/
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_packetNoCom.setSource(RR->identity.address());
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_packetNoCom.setVerb(Packet::VERB_MULTICAST_FRAME);
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_packetNoCom.append((uint64_t)nwid);
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_packetNoCom.append(flags);
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if (gatherLimit) _packetNoCom.append((uint32_t)gatherLimit);
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if (src) src.appendTo(_packetNoCom);
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dest.mac().appendTo(_packetNoCom);
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_packetNoCom.append((uint32_t)dest.adi());
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_packetNoCom.append((uint16_t)etherType);
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_packetNoCom.append(payload,len);
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_packetNoCom.compress();
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if (com) {
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_haveCom = true;
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flags |= 0x01;
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_packetWithCom.setSource(RR->identity.address());
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_packetWithCom.setVerb(Packet::VERB_MULTICAST_FRAME);
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_packetWithCom.append((uint64_t)nwid);
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_packetWithCom.append(flags);
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com->serialize(_packetWithCom);
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if (gatherLimit) _packetWithCom.append((uint32_t)gatherLimit);
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if (src) src.appendTo(_packetWithCom);
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dest.mac().appendTo(_packetWithCom);
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_packetWithCom.append((uint32_t)dest.adi());
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_packetWithCom.append((uint16_t)etherType);
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_packetWithCom.append(payload,len);
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_packetWithCom.compress();
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} else _haveCom = false;
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}
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void OutboundMulticast::sendOnly(const RuntimeEnvironment *RR,const Address &toAddr)
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{
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if (_haveCom) {
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SharedPtr<Peer> peer(RR->topology->getPeer(toAddr));
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if ( (!peer) || (peer->needsOurNetworkMembershipCertificate(_nwid,RR->node->now(),true)) ) {
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//TRACE(">>MC %.16llx -> %s (with COM)",(unsigned long long)this,toAddr.toString().c_str());
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_packetWithCom.newInitializationVector();
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_packetWithCom.setDestination(toAddr);
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RR->sw->send(_packetWithCom,true,_nwid);
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return;
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}
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}
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//TRACE(">>MC %.16llx -> %s (without COM)",(unsigned long long)this,toAddr.toString().c_str());
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_packetNoCom.newInitializationVector();
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_packetNoCom.setDestination(toAddr);
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RR->sw->send(_packetNoCom,true,_nwid);
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}
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} // namespace ZeroTier
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