mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-18 20:47:53 +00:00
Thinko.
This commit is contained in:
Adam Ierymenko
parent
bcf8c30ce0
commit
104fade420
327
root/root.cpp
327
root/root.cpp
@ -273,11 +273,6 @@ static void handlePacket(const int sock,const InetAddress *const ip,Packet &pkt)
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printf("%s HELLO rejected: identity address collision!" ZT_EOL_S,ip->toString(ipstr));
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// TODO: send error
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return;
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} else {
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printf("* invalid identity found and discarded: %s" ZT_EOL_S,id.toString(false, tmpstr));
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std::lock_guard<std::mutex> p_l(s_peersByVirtAddr_l);
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s_peersByVirtAddr.erase(source);
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peer.zero();
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}
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}
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}
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@ -327,195 +322,197 @@ static void handlePacket(const int sock,const InetAddress *const ip,Packet &pkt)
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peer = p->second;
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}
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}
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if (!pkt.dearmor(peer->key)) {
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printf("%s HELLO rejected: packet authentication failed" ZT_EOL_S,ip->toString(ipstr));
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return;
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}
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if (!pkt.uncompress()) {
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printf("%s packet rejected: decompression failed" ZT_EOL_S,ip->toString(ipstr));
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if (peer) {
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if (!pkt.dearmor(peer->key)) {
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printf("%s HELLO rejected: packet authentication failed" ZT_EOL_S,ip->toString(ipstr));
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return;
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}
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if (!pkt.uncompress()) {
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printf("%s packet rejected: decompression failed" ZT_EOL_S,ip->toString(ipstr));
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return;
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}
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} else {
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return;
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}
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}
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if (likely(peer)) {
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const int64_t now = OSUtils::now();
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const int64_t now = OSUtils::now();
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if (ip->isV4()) {
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peer->ip4 = ip;
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peer->v4s = sock;
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peer->lastReceiveV4 = now;
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if ((now - peer->lastReceiveV6) > ZT_PEER_ACTIVITY_TIMEOUT)
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peer->v6s = -1;
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} else if (ip->isV6()) {
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peer->ip6 = ip;
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peer->v6s = sock;
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peer->lastReceiveV6 = now;
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if ((now - peer->lastReceiveV4) > ZT_PEER_ACTIVITY_TIMEOUT)
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peer->v4s = -1;
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}
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peer->lastReceive = now;
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if (ip->isV4()) {
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peer->ip4 = ip;
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peer->v4s = sock;
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peer->lastReceiveV4 = now;
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if ((now - peer->lastReceiveV6) > ZT_PEER_ACTIVITY_TIMEOUT)
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peer->v6s = -1;
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} else if (ip->isV6()) {
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peer->ip6 = ip;
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peer->v6s = sock;
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peer->lastReceiveV6 = now;
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if ((now - peer->lastReceiveV4) > ZT_PEER_ACTIVITY_TIMEOUT)
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peer->v4s = -1;
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}
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peer->lastReceive = now;
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switch(pkt.verb()) {
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case Packet::VERB_HELLO:
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try {
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if ((now - peer->lastHello) > 250) {
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peer->lastHello = now;
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switch(pkt.verb()) {
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case Packet::VERB_HELLO:
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try {
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if ((now - peer->lastHello) > 250) {
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peer->lastHello = now;
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peer->vProto = (int)pkt[ZT_PROTO_VERB_HELLO_IDX_PROTOCOL_VERSION];
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peer->vMajor = (int)pkt[ZT_PROTO_VERB_HELLO_IDX_MAJOR_VERSION];
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peer->vMinor = (int)pkt[ZT_PROTO_VERB_HELLO_IDX_MINOR_VERSION];
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peer->vRev = (int)pkt.template at<uint16_t>(ZT_PROTO_VERB_HELLO_IDX_REVISION);
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const uint64_t origId = pkt.packetId();
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const uint64_t ts = pkt.template at<uint64_t>(ZT_PROTO_VERB_HELLO_IDX_TIMESTAMP);
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peer->vProto = (int)pkt[ZT_PROTO_VERB_HELLO_IDX_PROTOCOL_VERSION];
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peer->vMajor = (int)pkt[ZT_PROTO_VERB_HELLO_IDX_MAJOR_VERSION];
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peer->vMinor = (int)pkt[ZT_PROTO_VERB_HELLO_IDX_MINOR_VERSION];
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peer->vRev = (int)pkt.template at<uint16_t>(ZT_PROTO_VERB_HELLO_IDX_REVISION);
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const uint64_t origId = pkt.packetId();
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const uint64_t ts = pkt.template at<uint64_t>(ZT_PROTO_VERB_HELLO_IDX_TIMESTAMP);
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pkt.reset(source,s_self.address(),Packet::VERB_OK);
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pkt.append((uint8_t)Packet::VERB_HELLO);
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pkt.append(origId);
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pkt.append(ts);
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pkt.append((uint8_t)ZT_PROTO_VERSION);
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pkt.append((uint8_t)0);
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pkt.append((uint8_t)0);
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pkt.append((uint16_t)0);
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ip->serialize(pkt);
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if (peer->vProto < 20) { // send planet file for pre-2.x peers
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std::lock_guard<std::mutex> pl(s_planet_l);
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if (s_planet.length() > 0) {
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pkt.append((uint16_t)s_planet.size());
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pkt.append((const uint8_t *)s_planet.data(),s_planet.size());
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}
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}
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pkt.armor(peer->key,true);
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sendto(sock,pkt.data(),pkt.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)((ip->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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s_outputRate.log(now,pkt.size());
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peer->lastSend = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling HELLO from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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break;
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case Packet::VERB_ECHO:
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try {
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if ((now - peer->lastEcho) > 500) {
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peer->lastEcho = now;
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Packet outp(source,s_self.address(),Packet::VERB_OK);
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outp.append((uint8_t)Packet::VERB_ECHO);
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outp.append(pkt.packetId());
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outp.append(((const uint8_t *)pkt.data()) + ZT_PACKET_IDX_PAYLOAD,pkt.size() - ZT_PACKET_IDX_PAYLOAD);
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outp.compress();
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outp.armor(peer->key,true);
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sendto(sock,outp.data(),outp.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)((ip->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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s_outputRate.log(now,outp.size());
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peer->lastSend = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling ECHO from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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case Packet::VERB_WHOIS:
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try {
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std::vector< SharedPtr<RootPeer> > results;
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results.reserve(4);
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{
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std::lock_guard<std::mutex> l(s_peersByVirtAddr_l);
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for(unsigned int ptr=ZT_PACKET_IDX_PAYLOAD;(ptr+ZT_ADDRESS_LENGTH)<=pkt.size();ptr+=ZT_ADDRESS_LENGTH) {
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auto p = s_peersByVirtAddr.find(Address(pkt.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH));
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if (p != s_peersByVirtAddr.end()) {
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results.push_back(p->second);
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}
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pkt.reset(source,s_self.address(),Packet::VERB_OK);
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pkt.append((uint8_t)Packet::VERB_HELLO);
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pkt.append(origId);
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pkt.append(ts);
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pkt.append((uint8_t)ZT_PROTO_VERSION);
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pkt.append((uint8_t)0);
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pkt.append((uint8_t)0);
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pkt.append((uint16_t)0);
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ip->serialize(pkt);
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if (peer->vProto < 20) { // send planet file for pre-2.x peers
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std::lock_guard<std::mutex> pl(s_planet_l);
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if (s_planet.length() > 0) {
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pkt.append((uint16_t)s_planet.size());
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pkt.append((const uint8_t *)s_planet.data(),s_planet.size());
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}
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}
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pkt.armor(peer->key,true);
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sendto(sock,pkt.data(),pkt.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)((ip->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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if (!results.empty()) {
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const uint64_t origId = pkt.packetId();
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pkt.reset(source,s_self.address(),Packet::VERB_OK);
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pkt.append((uint8_t)Packet::VERB_WHOIS);
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pkt.append(origId);
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for(auto p=results.begin();p!=results.end();++p)
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(*p)->id.serialize(pkt,false);
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pkt.armor(peer->key,true);
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sendto(sock,pkt.data(),pkt.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)((ip->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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s_outputRate.log(now,pkt.size());
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peer->lastSend = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling HELLO from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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break;
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s_outputRate.log(now,pkt.size());
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peer->lastSend = now;
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case Packet::VERB_ECHO:
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try {
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if ((now - peer->lastEcho) > 500) {
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peer->lastEcho = now;
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Packet outp(source,s_self.address(),Packet::VERB_OK);
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outp.append((uint8_t)Packet::VERB_ECHO);
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outp.append(pkt.packetId());
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outp.append(((const uint8_t *)pkt.data()) + ZT_PACKET_IDX_PAYLOAD,pkt.size() - ZT_PACKET_IDX_PAYLOAD);
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outp.compress();
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outp.armor(peer->key,true);
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sendto(sock,outp.data(),outp.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)((ip->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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s_outputRate.log(now,outp.size());
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peer->lastSend = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling ECHO from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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case Packet::VERB_WHOIS:
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try {
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std::vector< SharedPtr<RootPeer> > results;
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results.reserve(4);
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{
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std::lock_guard<std::mutex> l(s_peersByVirtAddr_l);
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for(unsigned int ptr=ZT_PACKET_IDX_PAYLOAD;(ptr+ZT_ADDRESS_LENGTH)<=pkt.size();ptr+=ZT_ADDRESS_LENGTH) {
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auto p = s_peersByVirtAddr.find(Address(pkt.field(ptr,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH));
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if (p != s_peersByVirtAddr.end()) {
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results.push_back(p->second);
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}
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}
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} catch ( ... ) {
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printf("* unexpected exception handling ECHO from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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case Packet::VERB_MULTICAST_LIKE:
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try {
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std::lock_guard<std::mutex> l(s_multicastSubscriptions_l);
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for(unsigned int ptr=ZT_PACKET_IDX_PAYLOAD;(ptr+18)<=pkt.size();ptr+=18) {
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const uint64_t nwid = pkt.template at<uint64_t>(ptr);
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const MulticastGroup mg(MAC(pkt.field(ptr + 8,6),6),pkt.template at<uint32_t>(ptr + 14));
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s_multicastSubscriptions[nwid][mg][source] = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling MULTICAST_LIKE from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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break;
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case Packet::VERB_MULTICAST_GATHER:
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try {
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const uint64_t nwid = pkt.template at<uint64_t>(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_NETWORK_ID);
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//const unsigned int flags = pkt[ZT_PROTO_VERB_MULTICAST_GATHER_IDX_FLAGS];
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const MulticastGroup mg(MAC(pkt.field(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_MAC,6),6),pkt.template at<uint32_t>(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_ADI));
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unsigned int gatherLimit = pkt.template at<uint32_t>(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_GATHER_LIMIT);
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if (gatherLimit > 255)
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gatherLimit = 255;
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if (!results.empty()) {
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const uint64_t origId = pkt.packetId();
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pkt.reset(source,s_self.address(),Packet::VERB_OK);
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pkt.append((uint8_t)Packet::VERB_MULTICAST_GATHER);
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pkt.append((uint8_t)Packet::VERB_WHOIS);
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pkt.append(origId);
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pkt.append(nwid);
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mg.mac().appendTo(pkt);
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pkt.append((uint32_t)mg.adi());
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for(auto p=results.begin();p!=results.end();++p)
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(*p)->id.serialize(pkt,false);
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pkt.armor(peer->key,true);
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sendto(sock,pkt.data(),pkt.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)((ip->ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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{
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std::lock_guard<std::mutex> l(s_multicastSubscriptions_l);
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auto forNet = s_multicastSubscriptions.find(nwid);
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if (forNet != s_multicastSubscriptions.end()) {
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auto forGroup = forNet->second.find(mg);
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if (forGroup != forNet->second.end()) {
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pkt.append((uint32_t)forGroup->second.size());
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const unsigned int countAt = pkt.size();
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pkt.addSize(2);
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s_outputRate.log(now,pkt.size());
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peer->lastSend = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling ECHO from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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unsigned int l = 0;
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for(auto g=forGroup->second.begin();((l<gatherLimit)&&(g!=forGroup->second.end()));++g) {
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if (g->first != source) {
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++l;
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g->first.appendTo(pkt);
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}
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case Packet::VERB_MULTICAST_LIKE:
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try {
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std::lock_guard<std::mutex> l(s_multicastSubscriptions_l);
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for(unsigned int ptr=ZT_PACKET_IDX_PAYLOAD;(ptr+18)<=pkt.size();ptr+=18) {
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const uint64_t nwid = pkt.template at<uint64_t>(ptr);
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const MulticastGroup mg(MAC(pkt.field(ptr + 8,6),6),pkt.template at<uint32_t>(ptr + 14));
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s_multicastSubscriptions[nwid][mg][source] = now;
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}
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} catch ( ... ) {
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printf("* unexpected exception handling MULTICAST_LIKE from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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break;
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case Packet::VERB_MULTICAST_GATHER:
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try {
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const uint64_t nwid = pkt.template at<uint64_t>(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_NETWORK_ID);
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//const unsigned int flags = pkt[ZT_PROTO_VERB_MULTICAST_GATHER_IDX_FLAGS];
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const MulticastGroup mg(MAC(pkt.field(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_MAC,6),6),pkt.template at<uint32_t>(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_ADI));
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unsigned int gatherLimit = pkt.template at<uint32_t>(ZT_PROTO_VERB_MULTICAST_GATHER_IDX_GATHER_LIMIT);
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if (gatherLimit > 255)
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gatherLimit = 255;
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const uint64_t origId = pkt.packetId();
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pkt.reset(source,s_self.address(),Packet::VERB_OK);
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pkt.append((uint8_t)Packet::VERB_MULTICAST_GATHER);
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pkt.append(origId);
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pkt.append(nwid);
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mg.mac().appendTo(pkt);
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pkt.append((uint32_t)mg.adi());
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{
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std::lock_guard<std::mutex> l(s_multicastSubscriptions_l);
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auto forNet = s_multicastSubscriptions.find(nwid);
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if (forNet != s_multicastSubscriptions.end()) {
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auto forGroup = forNet->second.find(mg);
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if (forGroup != forNet->second.end()) {
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pkt.append((uint32_t)forGroup->second.size());
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const unsigned int countAt = pkt.size();
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pkt.addSize(2);
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unsigned int l = 0;
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for(auto g=forGroup->second.begin();((l<gatherLimit)&&(g!=forGroup->second.end()));++g) {
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if (g->first != source) {
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++l;
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g->first.appendTo(pkt);
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}
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}
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if (l > 0) {
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pkt.setAt<uint16_t>(countAt,(uint16_t)l);
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pkt.armor(peer->key,true);
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sendto(sock,pkt.data(),pkt.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)(ip->isV4() ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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if (l > 0) {
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pkt.setAt<uint16_t>(countAt,(uint16_t)l);
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pkt.armor(peer->key,true);
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sendto(sock,pkt.data(),pkt.size(),SENDTO_FLAGS,(const struct sockaddr *)ip,(socklen_t)(ip->isV4() ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)));
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s_outputRate.log(now,pkt.size());
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peer->lastSend = now;
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}
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s_outputRate.log(now,pkt.size());
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peer->lastSend = now;
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}
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}
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}
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} catch ( ... ) {
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printf("* unexpected exception handling MULTICAST_GATHER from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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break;
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} catch ( ... ) {
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printf("* unexpected exception handling MULTICAST_GATHER from %s" ZT_EOL_S,ip->toString(ipstr));
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}
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break;
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default:
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break;
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}
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return;
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default:
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break;
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}
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return;
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}
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// If we made it here, we are forwarding this packet to someone else and also possibly
|
||||
|
||||
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Reference in New Issue
Block a user