mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-06-13 04:38:28 +00:00
Integrate IPC stuff into NodeConfig.
This commit is contained in:
Adam Ierymenko
@ -37,41 +37,27 @@
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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 "NodeConfig.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "Defaults.hpp"
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#include "Utils.hpp"
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#include "Logger.hpp"
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#include "Topology.hpp"
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#include "Demarc.hpp"
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#include "Packet.hpp"
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#include "InetAddress.hpp"
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#include "Peer.hpp"
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#include "Salsa20.hpp"
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#include "Poly1305.hpp"
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#include "SHA512.hpp"
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#include "Node.hpp"
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#include "SoftwareUpdater.hpp"
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namespace ZeroTier {
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NodeConfig::NodeConfig(const RuntimeEnvironment *renv,const char *authToken,unsigned int controlPort) :
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NodeConfig::NodeConfig(const RuntimeEnvironment *renv,const char *authToken) :
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_r(renv),
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_controlSocket(true,controlPort,false,&_CBcontrolPacketHandler,this)
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_ipcListener(ZT_IPC_ENDPOINT,&_CBcommandHandler,this),
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_authToken(authToken)
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{
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{
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unsigned int csk[64];
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SHA512::hash(csk,authToken,(unsigned int)strlen(authToken));
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memcpy(_controlSocketKey,csk,32);
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}
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{
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Mutex::Lock _llc(_localConfig_m);
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Mutex::Lock _l(_localConfig_m);
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_readLocalConfig();
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}
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@ -103,6 +89,12 @@ NodeConfig::NodeConfig(const RuntimeEnvironment *renv,const char *authToken,unsi
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NodeConfig::~NodeConfig()
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{
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_writeLocalConfig();
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// Close any open IPC connections
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Mutex::Lock _l(_connections_m);
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for(std::map< IpcConnection *,bool >::iterator c(_connections.begin());c!=_connections.end();++c)
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delete c->first;
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_connections.clear();
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}
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void NodeConfig::putLocalConfig(const std::string &key,const char *value)
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@ -135,283 +127,191 @@ void NodeConfig::clean()
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n->second->clean();
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}
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/////////////////////////////////////////////////////////////////////////////
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// UDP localhost control bus
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// Macro used in execute() to push lines onto the return packet
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#undef _P
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#define _P(f,...) { r.push_back(std::string()); Utils::stdsprintf(r.back(),(f),##__VA_ARGS__); }
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void NodeConfig::_CBcommandHandler(void *arg,IpcConnection *ipcc,IpcConnection::EventType event,const char *commandLine)
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{
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switch(event) {
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case IpcConnection::IPC_EVENT_COMMAND:
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((NodeConfig *)arg)->_doCommand(ipcc,commandLine);
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break;
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case IpcConnection::IPC_EVENT_NEW_CONNECTION: {
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Mutex::Lock _l(((NodeConfig *)arg)->_connections_m);
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((NodeConfig *)arg)->_connections[ipcc] = false; // not yet authenticated
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} break;
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case IpcConnection::IPC_EVENT_CONNECTION_CLOSED: {
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Mutex::Lock _l(((NodeConfig *)arg)->_connections_m);
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((NodeConfig *)arg)->_connections.erase(ipcc);
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delete ipcc;
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} break;
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}
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}
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// Used with Topology::eachPeer to dump peer stats
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class _DumpPeerStatistics
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{
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public:
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_DumpPeerStatistics(std::vector<std::string> &out) :
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r(out),
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_now(Utils::now())
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_DumpPeerStatistics(IpcConnection *i) :
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ipcc(i),
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now(Utils::now())
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{
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}
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inline void operator()(Topology &t,const SharedPtr<Peer> &p)
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{
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InetAddress v4(p->ipv4ActivePath(_now));
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InetAddress v6(p->ipv6ActivePath(_now));
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InetAddress v4(p->ipv4ActivePath(now));
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InetAddress v6(p->ipv6ActivePath(now));
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if ((v4)||(v6)) {
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_P("200 listpeers %s %s %s %u %s",
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ipcc->printf("200 listpeers %s %s %s %u %s"ZT_EOL_S,
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p->address().toString().c_str(),
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((v4) ? v4.toString().c_str() : "-"),
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((v6) ? v6.toString().c_str() : "-"),
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p->latency(),
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p->remoteVersion().c_str());
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} else {
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_P("200 listpeers %s - - - %s",
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ipcc->printf("200 listpeers %s - - - %s"ZT_EOL_S,
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p->address().toString().c_str(),
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p->remoteVersion().c_str());
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}
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}
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private:
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std::vector<std::string> &r;
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uint64_t _now;
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IpcConnection *ipcc;
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uint64_t now;
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};
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std::vector<std::string> NodeConfig::execute(const char *command)
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void NodeConfig::_doCommand(IpcConnection *ipcc,const char *commandLine)
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{
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if (!commandLine)
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return; // sanity check
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std::vector<std::string> r;
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std::vector<std::string> cmd(Utils::split(command,"\r\n \t","\\","'"));
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/* Not coincidentally, response type codes correspond with HTTP
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* status codes. Technically a little arbitrary, but would maybe
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* make things easier if we wanted to slap some kind of web API
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* in front of this thing. */
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std::vector<std::string> cmd(Utils::split(commandLine,"\r\n \t","\\","'"));
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if ((cmd.empty())||(cmd[0] == "help")) {
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_P("200 help help");
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_P("200 help info");
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_P("200 help listpeers");
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_P("200 help listnetworks");
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_P("200 help join <network ID>");
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_P("200 help leave <network ID>");
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_P("200 help terminate [<reason>]");
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_P("200 help updatecheck");
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} else if (cmd[0] == "info") {
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// We are online if at least one supernode has spoken to us since the last time our
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// network environment changed and also less than ZT_PEER_LINK_ACTIVITY_TIMEOUT ago.
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bool isOnline = false;
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uint64_t now = Utils::now();
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uint64_t since = _r->timeOfLastNetworkEnvironmentChange;
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std::vector< SharedPtr<Peer> > snp(_r->topology->supernodePeers());
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for(std::vector< SharedPtr<Peer> >::const_iterator sn(snp.begin());sn!=snp.end();++sn) {
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uint64_t lastRec = (*sn)->lastDirectReceive();
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if ((lastRec)&&(lastRec > since)&&((now - lastRec) < ZT_PEER_LINK_ACTIVITY_TIMEOUT)) {
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isOnline = true;
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break;
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ipcc->printf("200 help help"ZT_EOL_S);
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ipcc->printf("200 auth token"ZT_EOL_S);
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ipcc->printf("200 help info"ZT_EOL_S);
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ipcc->printf("200 help listpeers"ZT_EOL_S);
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ipcc->printf("200 help listnetworks"ZT_EOL_S);
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ipcc->printf("200 help join <network ID>"ZT_EOL_S);
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ipcc->printf("200 help leave <network ID>"ZT_EOL_S);
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ipcc->printf("200 help terminate [<reason>]"ZT_EOL_S);
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ipcc->printf("200 help updatecheck"ZT_EOL_S);
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} else if (cmd[0] == "auth") {
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if ((cmd.size() > 1)&&(_authToken == cmd[1])) {
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Mutex::Lock _l(_connections_m);
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_connections[ipcc] = true;
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ipcc->printf("200 OK"ZT_EOL_S);
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} else ipcc->printf("403 auth failed"ZT_EOL_S);
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} else {
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{
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Mutex::Lock _l(_connections_m);
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if (!_connections[ipcc]) {
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ipcc->printf("403 not authorized"ZT_EOL_S""ZT_EOL_S);
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return;
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}
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}
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_P("200 info %s %s %s",_r->identity.address().toString().c_str(),(isOnline ? "ONLINE" : "OFFLINE"),Node::versionString());
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} else if (cmd[0] == "listpeers") {
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_P("200 listpeers <ztaddr> <ipv4> <ipv6> <latency> <version>");
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_r->topology->eachPeer(_DumpPeerStatistics(r));
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} else if (cmd[0] == "listnetworks") {
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Mutex::Lock _l(_networks_m);
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_P("200 listnetworks <nwid> <name> <status> <config age> <type> <dev> <ips>");
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for(std::map< uint64_t,SharedPtr<Network> >::const_iterator nw(_networks.begin());nw!=_networks.end();++nw) {
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std::string tmp;
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std::set<InetAddress> ips(nw->second->ips());
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for(std::set<InetAddress>::iterator i(ips.begin());i!=ips.end();++i) {
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if (tmp.length())
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tmp.push_back(',');
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tmp.append(i->toString());
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if (cmd[0] == "info") {
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// We are online if at least one supernode has spoken to us since the last time our
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// network environment changed and also less than ZT_PEER_LINK_ACTIVITY_TIMEOUT ago.
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bool isOnline = false;
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uint64_t now = Utils::now();
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uint64_t since = _r->timeOfLastNetworkEnvironmentChange;
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std::vector< SharedPtr<Peer> > snp(_r->topology->supernodePeers());
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for(std::vector< SharedPtr<Peer> >::const_iterator sn(snp.begin());sn!=snp.end();++sn) {
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uint64_t lastRec = (*sn)->lastDirectReceive();
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if ((lastRec)&&(lastRec > since)&&((now - lastRec) < ZT_PEER_LINK_ACTIVITY_TIMEOUT)) {
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isOnline = true;
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break;
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}
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}
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SharedPtr<NetworkConfig> nconf(nw->second->config2());
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ipcc->printf("200 info %s %s %s"ZT_EOL_S,_r->identity.address().toString().c_str(),(isOnline ? "ONLINE" : "OFFLINE"),Node::versionString());
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} else if (cmd[0] == "listpeers") {
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ipcc->printf("200 listpeers <ztaddr> <ipv4> <ipv6> <latency> <version>"ZT_EOL_S);
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_r->topology->eachPeer(_DumpPeerStatistics(ipcc));
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} else if (cmd[0] == "listnetworks") {
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Mutex::Lock _l(_networks_m);
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ipcc->printf("200 listnetworks <nwid> <name> <status> <config age> <type> <dev> <ips>"ZT_EOL_S);
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for(std::map< uint64_t,SharedPtr<Network> >::const_iterator nw(_networks.begin());nw!=_networks.end();++nw) {
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std::string tmp;
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std::set<InetAddress> ips(nw->second->ips());
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for(std::set<InetAddress>::iterator i(ips.begin());i!=ips.end();++i) {
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if (tmp.length())
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tmp.push_back(',');
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tmp.append(i->toString());
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}
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long long age = (nconf) ? ((long long)Utils::now() - (long long)nconf->timestamp()) : (long long)0;
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if (age < 0)
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age = 0;
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age /= 1000;
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SharedPtr<NetworkConfig> nconf(nw->second->config2());
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std::string dn(nw->second->tapDeviceName());
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_P("200 listnetworks %.16llx %s %s %lld %s %s %s",
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(unsigned long long)nw->first,
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((nconf) ? nconf->name().c_str() : "?"),
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Network::statusString(nw->second->status()),
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age,
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((nconf) ? (nconf->isOpen() ? "public" : "private") : "?"),
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(dn.length() > 0) ? dn.c_str() : "?",
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((tmp.length() > 0) ? tmp.c_str() : "-"));
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}
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} else if (cmd[0] == "join") {
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if (cmd.size() > 1) {
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uint64_t nwid = Utils::hexStrToU64(cmd[1].c_str());
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if (nwid > 0) {
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Mutex::Lock _l(_networks_m);
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if (_networks.count(nwid)) {
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_P("409 already a member of %.16llx",(unsigned long long)nwid);
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} else {
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try {
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SharedPtr<Network> nw(Network::newInstance(_r,this,nwid));
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_networks[nwid] = nw;
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_P("200 join %.16llx OK",(unsigned long long)nwid);
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} catch (std::exception &exc) {
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_P("500 join %.16llx ERROR: %s",(unsigned long long)nwid,exc.what());
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} catch ( ... ) {
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_P("500 join %.16llx ERROR: (unknown exception)",(unsigned long long)nwid);
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long long age = (nconf) ? ((long long)Utils::now() - (long long)nconf->timestamp()) : (long long)0;
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if (age < 0)
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age = 0;
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age /= 1000;
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std::string dn(nw->second->tapDeviceName());
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ipcc->printf("200 listnetworks %.16llx %s %s %lld %s %s %s"ZT_EOL_S,
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(unsigned long long)nw->first,
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((nconf) ? nconf->name().c_str() : "?"),
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Network::statusString(nw->second->status()),
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age,
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((nconf) ? (nconf->isOpen() ? "public" : "private") : "?"),
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(dn.length() > 0) ? dn.c_str() : "?",
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((tmp.length() > 0) ? tmp.c_str() : "-"));
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}
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} else if (cmd[0] == "join") {
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if (cmd.size() > 1) {
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uint64_t nwid = Utils::hexStrToU64(cmd[1].c_str());
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if (nwid > 0) {
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Mutex::Lock _l(_networks_m);
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if (_networks.count(nwid)) {
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ipcc->printf("409 already a member of %.16llx"ZT_EOL_S,(unsigned long long)nwid);
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} else {
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try {
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SharedPtr<Network> nw(Network::newInstance(_r,this,nwid));
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_networks[nwid] = nw;
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ipcc->printf("200 join %.16llx OK"ZT_EOL_S,(unsigned long long)nwid);
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} catch (std::exception &exc) {
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ipcc->printf("500 join %.16llx ERROR: %s"ZT_EOL_S,(unsigned long long)nwid,exc.what());
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} catch ( ... ) {
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ipcc->printf("500 join %.16llx ERROR: (unknown exception)"ZT_EOL_S,(unsigned long long)nwid);
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}
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}
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} else {
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ipcc->printf("400 join requires a network ID (>0) in hexadecimal format"ZT_EOL_S);
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}
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} else {
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_P("400 join requires a network ID (>0) in hexadecimal format");
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ipcc->printf("400 join requires a network ID (>0) in hexadecimal format"ZT_EOL_S);
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}
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} else {
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_P("400 join requires a network ID (>0) in hexadecimal format");
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}
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} else if (cmd[0] == "leave") {
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if (cmd.size() > 1) {
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Mutex::Lock _l(_networks_m);
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uint64_t nwid = Utils::hexStrToU64(cmd[1].c_str());
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std::map< uint64_t,SharedPtr<Network> >::iterator nw(_networks.find(nwid));
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if (nw == _networks.end()) {
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_P("404 leave %.16llx ERROR: not a member of that network",(unsigned long long)nwid);
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} else if (cmd[0] == "leave") {
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if (cmd.size() > 1) {
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Mutex::Lock _l(_networks_m);
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uint64_t nwid = Utils::hexStrToU64(cmd[1].c_str());
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std::map< uint64_t,SharedPtr<Network> >::iterator nw(_networks.find(nwid));
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if (nw == _networks.end()) {
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ipcc->printf("404 leave %.16llx ERROR: not a member of that network"ZT_EOL_S,(unsigned long long)nwid);
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} else {
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nw->second->destroyOnDelete();
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_networks.erase(nw);
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}
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} else {
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nw->second->destroyOnDelete();
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_networks.erase(nw);
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ipcc->printf("400 leave requires a network ID (>0) in hexadecimal format"ZT_EOL_S);
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}
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} else if (cmd[0] == "terminate") {
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if (cmd.size() > 1)
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_r->node->terminate(Node::NODE_NORMAL_TERMINATION,cmd[1].c_str());
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else _r->node->terminate(Node::NODE_NORMAL_TERMINATION,"terminate via IPC command");
|
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} else if (cmd[0] == "updatecheck") {
|
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if (_r->updater) {
|
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ipcc->printf("200 checking for software updates now at: %s"ZT_EOL_S,ZT_DEFAULTS.updateLatestNfoURL.c_str());
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_r->updater->checkNow();
|
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} else {
|
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ipcc->printf("500 software updates are not enabled"ZT_EOL_S);
|
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}
|
||||
} else {
|
||||
_P("400 leave requires a network ID (>0) in hexadecimal format");
|
||||
}
|
||||
} else if (cmd[0] == "terminate") {
|
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if (cmd.size() > 1)
|
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_r->node->terminate(Node::NODE_NORMAL_TERMINATION,cmd[1].c_str());
|
||||
else _r->node->terminate(Node::NODE_NORMAL_TERMINATION,(const char *)0);
|
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} else if (cmd[0] == "updatecheck") {
|
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if (_r->updater) {
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_P("200 checking for software updates now at: %s",ZT_DEFAULTS.updateLatestNfoURL.c_str());
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_r->updater->checkNow();
|
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} else {
|
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_P("500 software updates are not enabled");
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}
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||||
} else {
|
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_P("404 %s No such command. Use 'help' for help.",cmd[0].c_str());
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}
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||||
|
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r.push_back(std::string()); // terminate with empty line
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
std::vector< Buffer<ZT_NODECONFIG_MAX_PACKET_SIZE> > NodeConfig::encodeControlMessage(const void *key,unsigned long conversationId,const std::vector<std::string> &payload)
|
||||
{
|
||||
char poly1305tag[ZT_POLY1305_MAC_LEN];
|
||||
char iv[8];
|
||||
char keytmp[32];
|
||||
std::vector< Buffer<ZT_NODECONFIG_MAX_PACKET_SIZE> > packets;
|
||||
Buffer<ZT_NODECONFIG_MAX_PACKET_SIZE> packet;
|
||||
|
||||
packet.setSize(16); // room for poly1305 auth tag and IV
|
||||
packet.append((uint32_t)(conversationId & 0xffffffff));
|
||||
|
||||
for(unsigned int i=0;i<payload.size();++i) {
|
||||
packet.append(payload[i]); // will throw if too big
|
||||
packet.append((unsigned char)0);
|
||||
|
||||
if (((i + 1) >= payload.size())||((packet.size() + payload[i + 1].length() + 1) >= packet.capacity())) {
|
||||
Utils::getSecureRandom(iv,8);
|
||||
memcpy(packet.field(8,8),iv,8);
|
||||
|
||||
Salsa20 s20(key,256,iv,ZT_PROTO_SALSA20_ROUNDS);
|
||||
s20.encrypt(packet.field(16,packet.size() - 16),packet.field(16,packet.size() - 16),packet.size() - 16);
|
||||
|
||||
memcpy(keytmp,key,32);
|
||||
for(unsigned int i=0;i<8;++i)
|
||||
keytmp[i] ^= iv[i]; // can't reuse poly1305 keys, so mangle key with IV each time
|
||||
Poly1305::compute(poly1305tag,packet.field(16,packet.size() - 16),packet.size() - 16,keytmp);
|
||||
memcpy(packet.field(0,8),poly1305tag,8);
|
||||
|
||||
packets.push_back(packet);
|
||||
|
||||
packet.setSize(16); // room for poly1305 auth tag and IV
|
||||
packet.append((uint32_t)(conversationId & 0xffffffff));
|
||||
ipcc->printf("404 %s No such command. Use 'help' for help."ZT_EOL_S,cmd[0].c_str());
|
||||
}
|
||||
}
|
||||
|
||||
return packets;
|
||||
ipcc->printf(ZT_EOL_S); // blank line ends response
|
||||
}
|
||||
|
||||
bool NodeConfig::decodeControlMessagePacket(const void *key,const void *data,unsigned int len,unsigned long &conversationId,std::vector<std::string> &payload)
|
||||
{
|
||||
char poly1305tag[ZT_POLY1305_MAC_LEN];
|
||||
char keytmp[32];
|
||||
char iv[8];
|
||||
|
||||
try {
|
||||
if (len < 20)
|
||||
return false;
|
||||
|
||||
Buffer<ZT_NODECONFIG_MAX_PACKET_SIZE> packet(data,len);
|
||||
|
||||
memcpy(keytmp,key,32);
|
||||
memcpy(iv,packet.field(8,8),8);
|
||||
for(unsigned int i=0;i<8;++i)
|
||||
keytmp[i] ^= iv[i];
|
||||
Poly1305::compute(poly1305tag,packet.field(16,packet.size() - 16),packet.size() - 16,keytmp);
|
||||
if (!Utils::secureEq(packet.field(0,8),poly1305tag,8))
|
||||
return false;
|
||||
|
||||
Salsa20 s20(key,256,packet.field(8,8),ZT_PROTO_SALSA20_ROUNDS);
|
||||
s20.decrypt(packet.field(16,packet.size() - 16),packet.field(16,packet.size() - 16),packet.size() - 16);
|
||||
|
||||
conversationId = packet.at<uint32_t>(16);
|
||||
|
||||
const char *pl = ((const char *)packet.data()) + 20;
|
||||
unsigned int pll = packet.size() - 20;
|
||||
for(unsigned int i=0;i<pll;) {
|
||||
unsigned int eos = i;
|
||||
while ((eos < pll)&&(pl[eos]))
|
||||
++eos;
|
||||
if (eos >= i) {
|
||||
payload.push_back(std::string(pl + i,eos - i));
|
||||
i = eos + 1;
|
||||
} else break;
|
||||
}
|
||||
|
||||
return true;
|
||||
} catch ( ... ) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
void NodeConfig::_CBcontrolPacketHandler(UdpSocket *sock,void *arg,const InetAddress &remoteAddr,const void *data,unsigned int len)
|
||||
{
|
||||
NodeConfig *nc = (NodeConfig *)arg;
|
||||
#ifdef ZT_TRACE
|
||||
const RuntimeEnvironment *_r = nc->_r;
|
||||
#endif
|
||||
|
||||
try {
|
||||
unsigned long convId = 0;
|
||||
std::vector<std::string> commands;
|
||||
|
||||
if (!decodeControlMessagePacket(nc->_controlSocketKey,data,len,convId,commands)) {
|
||||
TRACE("control bus packet from %s failed decode, discarded",remoteAddr.toString().c_str());
|
||||
return;
|
||||
}
|
||||
TRACE("control bus packet from %s, contains %d commands",remoteAddr.toString().c_str(),(int)commands.size());
|
||||
|
||||
for(std::vector<std::string>::iterator c(commands.begin());c!=commands.end();++c) {
|
||||
std::vector< Buffer<ZT_NODECONFIG_MAX_PACKET_SIZE> > resultPackets(encodeControlMessage(nc->_controlSocketKey,convId,nc->execute(c->c_str())));
|
||||
for(std::vector< Buffer<ZT_NODECONFIG_MAX_PACKET_SIZE> >::iterator p(resultPackets.begin());p!=resultPackets.end();++p)
|
||||
sock->send(remoteAddr,p->data(),p->size(),-1);
|
||||
}
|
||||
} catch (std::exception &exc) {
|
||||
TRACE("exception handling control bus packet from %s: %s",remoteAddr.toString().c_str(),exc.what());
|
||||
} catch ( ... ) {
|
||||
TRACE("exception handling control bus packet from %s: (unknown)",remoteAddr.toString().c_str());
|
||||
}
|
||||
}
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
void NodeConfig::_readLocalConfig()
|
||||
{
|
||||
// assumes _localConfig_m is locked
|
||||
|
||||
Reference in New Issue
Block a user