2 * This file is part of PowerDNS or dnsdist.
3 * Copyright -- PowerDNS.COM B.V. and its contributors
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * In addition, for the avoidance of any doubt, permission is granted to
10 * link this program with OpenSSL and to (re)distribute the binaries
11 * produced as the result of such linking.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 // for OpenBSD, sys/socket.h needs to come before net/if.h
27 #include <sys/socket.h>
30 #include <sys/types.h>
35 #include "dnsdist-console.hh"
36 #include "dnsdist-ecs.hh"
37 #include "dnsdist-healthchecks.hh"
38 #include "dnsdist-lua.hh"
40 #include "dnsdist-lua-ffi.hh"
41 #endif /* LUAJIT_VERSION */
42 #include "dnsdist-rings.hh"
43 #include "dnsdist-secpoll.hh"
46 #include "dnswriter.hh"
49 #include "protobuf.hh"
50 #include "sodcrypto.hh"
56 #include <boost/logic/tribool.hpp>
57 #include <boost/lexical_cast.hpp>
60 #include <systemd/sd-daemon.h>
65 static vector
<std::function
<void(void)>>* g_launchWork
= nullptr;
67 boost::tribool g_noLuaSideEffect
;
68 static bool g_included
{false};
70 /* this is a best effort way to prevent logging calls with no side-effects in the output of delta()
71 Functions can declare setLuaNoSideEffect() and if nothing else does declare a side effect, or nothing
72 has done so before on this invocation, this call won't be part of delta() output */
73 void setLuaNoSideEffect()
75 if(g_noLuaSideEffect
==false) // there has been a side effect already
77 g_noLuaSideEffect
=true;
80 void setLuaSideEffect()
82 g_noLuaSideEffect
=false;
85 bool getLuaNoSideEffect()
87 if (g_noLuaSideEffect
) {
93 void resetLuaSideEffect()
95 g_noLuaSideEffect
= boost::logic::indeterminate
;
98 typedef std::unordered_map
<std::string
, boost::variant
<bool, int, std::string
, std::vector
<std::pair
<int,int> >, std::vector
<std::pair
<int, std::string
> >, std::map
<std::string
,std::string
> > > localbind_t
;
100 static void parseLocalBindVars(boost::optional
<localbind_t
> vars
, bool& reusePort
, int& tcpFastOpenQueueSize
, std::string
& interface
, std::set
<int>& cpus
)
103 if (vars
->count("reusePort")) {
104 reusePort
= boost::get
<bool>((*vars
)["reusePort"]);
106 if (vars
->count("tcpFastOpenQueueSize")) {
107 tcpFastOpenQueueSize
= boost::get
<int>((*vars
)["tcpFastOpenQueueSize"]);
109 if (vars
->count("interface")) {
110 interface
= boost::get
<std::string
>((*vars
)["interface"]);
112 if (vars
->count("cpus")) {
113 for (const auto cpu
: boost::get
<std::vector
<std::pair
<int,int>>>((*vars
)["cpus"])) {
114 cpus
.insert(cpu
.second
);
120 #if defined(HAVE_DNS_OVER_TLS) || defined(HAVE_DNS_OVER_HTTPS)
121 static bool loadTLSCertificateAndKeys(const std::string
& context
, std::vector
<std::pair
<std::string
, std::string
>>& pairs
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> certFiles
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> keyFiles
)
123 if (certFiles
.type() == typeid(std::string
) && keyFiles
.type() == typeid(std::string
)) {
124 auto certFile
= boost::get
<std::string
>(certFiles
);
125 auto keyFile
= boost::get
<std::string
>(keyFiles
);
127 pairs
.push_back({certFile
, keyFile
});
129 else if (certFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>) && keyFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>))
131 auto certFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(certFiles
);
132 auto keyFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(keyFiles
);
133 if (certFilesVect
.size() == keyFilesVect
.size()) {
135 for (size_t idx
= 0; idx
< certFilesVect
.size(); idx
++) {
136 pairs
.push_back({certFilesVect
.at(idx
).second
, keyFilesVect
.at(idx
).second
});
140 errlog("Error, mismatching number of certificates and keys in call to %s()!", context
);
141 g_outputBuffer
="Error, mismatching number of certificates and keys in call to " + context
+ "()!";
146 errlog("Error, mismatching number of certificates and keys in call to %s()!", context
);
147 g_outputBuffer
="Error, mismatching number of certificates and keys in call to " + context
+ "()!";
154 static void parseTLSConfig(TLSConfig
& config
, const std::string
& context
, boost::optional
<localbind_t
> vars
)
156 if (vars
->count("ciphers")) {
157 config
.d_ciphers
= boost::get
<const string
>((*vars
)["ciphers"]);
160 if (vars
->count("ciphersTLS13")) {
161 config
.d_ciphers13
= boost::get
<const string
>((*vars
)["ciphersTLS13"]);
165 if (vars
->count("minTLSVersion")) {
166 config
.d_minTLSVersion
= libssl_tls_version_from_string(boost::get
<const string
>((*vars
)["minTLSVersion"]));
168 #endif /* HAVE_LIBSSL */
170 if (vars
->count("ticketKeyFile")) {
171 config
.d_ticketKeyFile
= boost::get
<const string
>((*vars
)["ticketKeyFile"]);
174 if (vars
->count("ticketsKeysRotationDelay")) {
175 config
.d_ticketsKeyRotationDelay
= boost::get
<int>((*vars
)["ticketsKeysRotationDelay"]);
178 if (vars
->count("numberOfTicketsKeys")) {
179 config
.d_numberOfTicketsKeys
= boost::get
<int>((*vars
)["numberOfTicketsKeys"]);
182 if (vars
->count("preferServerCiphers")) {
183 config
.d_preferServerCiphers
= boost::get
<bool>((*vars
)["preferServerCiphers"]);
186 if (vars
->count("sessionTickets")) {
187 config
.d_enableTickets
= boost::get
<bool>((*vars
)["sessionTickets"]);
190 if (vars
->count("numberOfStoredSessions")) {
191 auto value
= boost::get
<int>((*vars
)["numberOfStoredSessions"]);
193 errlog("Invalid value '%d' for %s() parameter 'numberOfStoredSessions', should be >= 0, dismissing", value
, context
);
194 g_outputBuffer
="Invalid value '" + std::to_string(value
) + "' for " + context
+ "() parameter 'numberOfStoredSessions', should be >= 0, dimissing";
196 config
.d_maxStoredSessions
= value
;
199 if (vars
->count("ocspResponses")) {
200 auto files
= boost::get
<std::vector
<std::pair
<int, std::string
>>>((*vars
)["ocspResponses"]);
201 for (const auto& file
: files
) {
202 config
.d_ocspFiles
.push_back(file
.second
);
206 if (vars
->count("keyLogFile")) {
207 config
.d_keyLogFile
= boost::get
<const string
>((*vars
)["keyLogFile"]);
211 #endif // defined(HAVE_DNS_OVER_TLS) || defined(HAVE_DNS_OVER_HTTPS)
213 static void setupLuaConfig(bool client
, bool configCheck
)
215 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
, vector
<pair
<int, std::string
> >, DownstreamState::checkfunc_t
> > newserver_t
;
216 g_lua
.writeFunction("inClientStartup", [client
]() {
217 return client
&& !g_configurationDone
;
220 g_lua
.writeFunction("inConfigCheck", [client
, configCheck
]() {
224 g_lua
.writeFunction("newServer",
225 [client
, configCheck
](boost::variant
<string
,newserver_t
> pvars
, boost::optional
<int> qps
) {
228 std::shared_ptr
<DownstreamState
> ret
= std::make_shared
<DownstreamState
>(ComboAddress());
231 ComboAddress serverAddr
;
232 std::string serverAddressStr
;
233 if(auto addrStr
= boost::get
<string
>(&pvars
)) {
234 serverAddressStr
= *addrStr
;
236 vars
["qps"] = std::to_string(*qps
);
239 vars
= boost::get
<newserver_t
>(pvars
);
240 serverAddressStr
= boost::get
<string
>(vars
["address"]);
244 serverAddr
= ComboAddress(serverAddressStr
, 53);
246 catch(const PDNSException
& e
) {
247 g_outputBuffer
="Error creating new server: "+string(e
.reason
);
248 errlog("Error creating new server with address %s: %s", serverAddressStr
, e
.reason
);
251 catch(std::exception
& e
) {
252 g_outputBuffer
="Error creating new server: "+string(e
.what());
253 errlog("Error creating new server with address %s: %s", serverAddressStr
, e
.what());
257 if(IsAnyAddress(serverAddr
)) {
258 g_outputBuffer
="Error creating new server: invalid address for a downstream server.";
259 errlog("Error creating new server: %s is not a valid address for a downstream server", serverAddressStr
);
263 ComboAddress sourceAddr
;
264 std::string sourceItfName
;
265 unsigned int sourceItf
= 0;
266 size_t numberOfSockets
= 1;
269 if(vars
.count("source")) {
270 /* handle source in the following forms:
271 - v4 address ("192.0.2.1")
272 - v6 address ("2001:DB8::1")
273 - interface name ("eth0")
274 - v4 address and interface name ("192.0.2.1@eth0")
275 - v6 address and interface name ("2001:DB8::1@eth0")
277 const string source
= boost::get
<string
>(vars
["source"]);
279 std::string::size_type pos
= source
.find("@");
280 if (pos
== std::string::npos
) {
281 /* no '@', try to parse that as a valid v4/v6 address */
283 sourceAddr
= ComboAddress(source
);
293 /* try to parse as interface name, or v4/v6@itf */
294 sourceItfName
= source
.substr(pos
== std::string::npos
? 0 : pos
+ 1);
295 unsigned int itfIdx
= if_nametoindex(sourceItfName
.c_str());
298 if (pos
== 0 || pos
== std::string::npos
) {
299 /* "eth0" or "@eth0" */
303 /* "192.0.2.1@eth0" */
304 sourceAddr
= ComboAddress(source
.substr(0, pos
));
307 #ifdef SO_BINDTODEVICE
308 /* we need to retain CAP_NET_RAW to be able to set SO_BINDTODEVICE in the health checks */
309 g_capabilitiesToRetain
.insert("CAP_NET_RAW");
314 warnlog("Dismissing source %s because '%s' is not a valid interface name", source
, sourceItfName
);
319 if (vars
.count("sockets")) {
320 numberOfSockets
= std::stoul(boost::get
<string
>(vars
["sockets"]));
321 if (numberOfSockets
== 0) {
322 warnlog("Dismissing invalid number of sockets '%s', using 1 instead", boost::get
<string
>(vars
["sockets"]));
327 // create but don't connect the socket in client or check-config modes
328 ret
=std::make_shared
<DownstreamState
>(serverAddr
, sourceAddr
, sourceItf
, sourceItfName
, numberOfSockets
, !(client
|| configCheck
));
329 if (!(client
|| configCheck
)) {
330 infolog("Added downstream server %s", serverAddr
.toStringWithPort());
333 if(vars
.count("qps")) {
334 int qpsVal
=std::stoi(boost::get
<string
>(vars
["qps"]));
335 ret
->qps
=QPSLimiter(qpsVal
, qpsVal
);
338 if(vars
.count("order")) {
339 ret
->order
=std::stoi(boost::get
<string
>(vars
["order"]));
342 if(vars
.count("weight")) {
344 int weightVal
=std::stoi(boost::get
<string
>(vars
["weight"]));
347 errlog("Error creating new server: downstream weight value must be greater than 0.");
351 ret
->setWeight(weightVal
);
353 catch(std::exception
& e
) {
354 // std::stoi will throw an exception if the string isn't in a value int range
355 errlog("Error creating new server: downstream weight value must be between %s and %s", 1, std::numeric_limits
<int>::max());
360 if(vars
.count("retries")) {
361 ret
->retries
=std::stoi(boost::get
<string
>(vars
["retries"]));
364 if(vars
.count("checkInterval")) {
365 ret
->checkInterval
=static_cast<unsigned int>(std::stoul(boost::get
<string
>(vars
["checkInterval"])));
368 if(vars
.count("tcpConnectTimeout")) {
369 ret
->tcpConnectTimeout
=std::stoi(boost::get
<string
>(vars
["tcpConnectTimeout"]));
372 if(vars
.count("tcpSendTimeout")) {
373 ret
->tcpSendTimeout
=std::stoi(boost::get
<string
>(vars
["tcpSendTimeout"]));
376 if(vars
.count("tcpRecvTimeout")) {
377 ret
->tcpRecvTimeout
=std::stoi(boost::get
<string
>(vars
["tcpRecvTimeout"]));
380 if(vars
.count("tcpFastOpen")) {
381 bool fastOpen
= boost::get
<bool>(vars
["tcpFastOpen"]);
384 ret
->tcpFastOpen
=true;
386 warnlog("TCP Fast Open has been configured on downstream server %s but is not supported", boost::get
<string
>(vars
["address"]));
391 if(vars
.count("name")) {
392 ret
->setName(boost::get
<string
>(vars
["name"]));
395 if (vars
.count("id")) {
396 ret
->setId(boost::lexical_cast
<boost::uuids::uuid
>(boost::get
<string
>(vars
["id"])));
399 if(vars
.count("checkName")) {
400 ret
->checkName
=DNSName(boost::get
<string
>(vars
["checkName"]));
403 if(vars
.count("checkType")) {
404 ret
->checkType
=boost::get
<string
>(vars
["checkType"]);
407 if(vars
.count("checkClass")) {
408 ret
->checkClass
=std::stoi(boost::get
<string
>(vars
["checkClass"]));
411 if(vars
.count("checkFunction")) {
412 ret
->checkFunction
= boost::get
<DownstreamState::checkfunc_t
>(vars
["checkFunction"]);
415 if(vars
.count("checkTimeout")) {
416 ret
->checkTimeout
= std::stoi(boost::get
<string
>(vars
["checkTimeout"]));
419 if(vars
.count("setCD")) {
420 ret
->setCD
=boost::get
<bool>(vars
["setCD"]);
423 if(vars
.count("mustResolve")) {
424 ret
->mustResolve
=boost::get
<bool>(vars
["mustResolve"]);
427 if(vars
.count("useClientSubnet")) {
428 ret
->useECS
=boost::get
<bool>(vars
["useClientSubnet"]);
431 if(vars
.count("disableZeroScope")) {
432 ret
->disableZeroScope
=boost::get
<bool>(vars
["disableZeroScope"]);
435 if(vars
.count("ipBindAddrNoPort")) {
436 ret
->ipBindAddrNoPort
=boost::get
<bool>(vars
["ipBindAddrNoPort"]);
439 if(vars
.count("addXPF")) {
440 ret
->xpfRRCode
=std::stoi(boost::get
<string
>(vars
["addXPF"]));
443 if(vars
.count("maxCheckFailures")) {
444 ret
->maxCheckFailures
=std::stoi(boost::get
<string
>(vars
["maxCheckFailures"]));
447 if(vars
.count("rise")) {
448 ret
->minRiseSuccesses
=std::stoi(boost::get
<string
>(vars
["rise"]));
451 if(vars
.count("cpus")) {
452 for (const auto cpu
: boost::get
<vector
<pair
<int,string
>>>(vars
["cpus"])) {
453 cpus
.insert(std::stoi(cpu
.second
));
457 /* this needs to be done _AFTER_ the order has been set,
458 since the server are kept ordered inside the pool */
459 auto localPools
= g_pools
.getCopy();
460 if(vars
.count("pool")) {
461 if(auto* pool
= boost::get
<string
>(&vars
["pool"])) {
462 ret
->pools
.insert(*pool
);
465 auto pools
= boost::get
<vector
<pair
<int, string
> > >(vars
["pool"]);
466 for(auto& p
: pools
) {
467 ret
->pools
.insert(p
.second
);
470 for(const auto& poolName
: ret
->pools
) {
471 addServerToPool(localPools
, poolName
, ret
);
475 addServerToPool(localPools
, "", ret
);
477 g_pools
.setState(localPools
);
479 if (ret
->connected
) {
480 ret
->threadStarted
.test_and_set();
483 g_launchWork
->push_back([ret
,cpus
]() {
484 ret
->tid
= thread(responderThread
, ret
);
486 mapThreadToCPUList(ret
->tid
.native_handle(), cpus
);
491 ret
->tid
= thread(responderThread
, ret
);
493 mapThreadToCPUList(ret
->tid
.native_handle(), cpus
);
498 auto states
= g_dstates
.getCopy();
499 states
.push_back(ret
);
500 std::stable_sort(states
.begin(), states
.end(), [](const decltype(ret
)& a
, const decltype(ret
)& b
) {
501 return a
->order
< b
->order
;
503 g_dstates
.setState(states
);
507 g_lua
.writeFunction("rmServer",
508 [](boost::variant
<std::shared_ptr
<DownstreamState
>, int, std::string
> var
)
511 shared_ptr
<DownstreamState
> server
= nullptr;
512 auto states
= g_dstates
.getCopy();
513 if (auto* rem
= boost::get
<shared_ptr
<DownstreamState
>>(&var
)) {
516 else if (auto str
= boost::get
<std::string
>(&var
)) {
517 const auto uuid
= getUniqueID(*str
);
518 for (auto& state
: states
) {
519 if (state
->id
== uuid
) {
525 int idx
= boost::get
<int>(var
);
526 server
= states
.at(idx
);
529 throw std::runtime_error("unable to locate the requested server");
531 auto localPools
= g_pools
.getCopy();
532 for (const string
& poolName
: server
->pools
) {
533 removeServerFromPool(localPools
, poolName
, server
);
535 /* the server might also be in the default pool */
536 removeServerFromPool(localPools
, "", server
);
537 g_pools
.setState(localPools
);
538 states
.erase(remove(states
.begin(), states
.end(), server
), states
.end());
539 g_dstates
.setState(states
);
542 g_lua
.writeFunction("truncateTC", [](bool tc
) { setLuaSideEffect(); g_truncateTC
=tc
; });
543 g_lua
.writeFunction("fixupCase", [](bool fu
) { setLuaSideEffect(); g_fixupCase
=fu
; });
545 g_lua
.writeFunction("addACL", [](const std::string
& domain
) {
547 g_ACL
.modify([domain
](NetmaskGroup
& nmg
) { nmg
.addMask(domain
); });
550 g_lua
.writeFunction("setLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
554 if (g_configurationDone
) {
555 g_outputBuffer
="setLocal cannot be used at runtime!\n";
558 bool reusePort
= false;
559 int tcpFastOpenQueueSize
= 0;
560 std::string interface
;
563 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
566 ComboAddress
loc(addr
, 53);
567 for (auto it
= g_frontends
.begin(); it
!= g_frontends
.end(); ) {
568 /* DoH, DoT and DNSCrypt frontends are separate */
569 if ((*it
)->tlsFrontend
== nullptr && (*it
)->dnscryptCtx
== nullptr && (*it
)->dohFrontend
== nullptr) {
570 it
= g_frontends
.erase(it
);
577 // only works pre-startup, so no sync necessary
578 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
579 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
581 catch(const std::exception
& e
) {
582 g_outputBuffer
="Error: "+string(e
.what())+"\n";
586 g_lua
.writeFunction("addLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
590 if (g_configurationDone
) {
591 g_outputBuffer
="addLocal cannot be used at runtime!\n";
594 bool reusePort
= false;
595 int tcpFastOpenQueueSize
= 0;
596 std::string interface
;
599 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
602 ComboAddress
loc(addr
, 53);
603 // only works pre-startup, so no sync necessary
604 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
605 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
607 catch(std::exception
& e
) {
608 g_outputBuffer
="Error: "+string(e
.what())+"\n";
609 errlog("Error while trying to listen on %s: %s\n", addr
, string(e
.what()));
613 g_lua
.writeFunction("setACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
616 if(auto str
= boost::get
<string
>(&inp
)) {
619 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
620 nmg
.addMask(p
.second
);
625 g_lua
.writeFunction("showACL", []() {
626 setLuaNoSideEffect();
629 g_ACL
.getLocal()->toStringVector(&vec
);
631 for(const auto& s
: vec
)
632 g_outputBuffer
+=s
+"\n";
636 g_lua
.writeFunction("shutdown", []() {
638 sd_notify(0, "STOPPING=1");
639 #endif /* HAVE_SYSTEMD */
641 // Useful for debugging leaks, but might lead to race under load
642 // since other threads are still runing.
643 for(auto& frontend
: g_tlslocals
) {
648 google::protobuf::ShutdownProtobufLibrary();
649 #endif /* HAVE_PROTOBUF */
654 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
> > showserversopts_t
;
656 g_lua
.writeFunction("showServers", [](boost::optional
<showserversopts_t
> vars
) {
657 setLuaNoSideEffect();
658 bool showUUIDs
= false;
660 if (vars
->count("showUUIDs")) {
661 showUUIDs
= boost::get
<bool>((*vars
)["showUUIDs"]);
668 fmt
= boost::format("%1$-3d %15$-36s %2$-20.20s %|62t|%3% %|92t|%4$5s %|88t|%5$7.1f %|103t|%6$7d %|106t|%7$3d %|115t|%8$2d %|117t|%9$10d %|123t|%10$7d %|128t|%11$5.1f %|146t|%12$5.1f %|152t|%13$11d %14%" );
669 // 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
670 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools" % "UUID") << endl
;
672 fmt
= boost::format("%1$-3d %2$-20.20s %|25t|%3% %|55t|%4$5s %|51t|%5$7.1f %|66t|%6$7d %|69t|%7$3d %|78t|%8$2d %|80t|%9$10d %|86t|%10$7d %|91t|%11$5.1f %|109t|%12$5.1f %|115t|%13$11d %14%" );
673 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools") << endl
;
676 uint64_t totQPS
{0}, totQueries
{0}, totDrops
{0};
678 auto states
= g_dstates
.getLocal();
679 for(const auto& s
: *states
) {
680 string status
= s
->getStatus();
682 for(auto& p
: s
->pools
) {
688 ret
<< (fmt
% counter
% s
->getName() % s
->remote
.toStringWithPort() %
690 s
->queryLoad
% s
->qps
.getRate() % s
->order
% s
->weight
% s
->queries
.load() % s
->reuseds
.load() % (s
->dropRate
) % (s
->latencyUsec
/1000.0) % s
->outstanding
.load() % pools
% s
->id
) << endl
;
692 ret
<< (fmt
% counter
% s
->getName() % s
->remote
.toStringWithPort() %
694 s
->queryLoad
% s
->qps
.getRate() % s
->order
% s
->weight
% s
->queries
.load() % s
->reuseds
.load() % (s
->dropRate
) % (s
->latencyUsec
/1000.0) % s
->outstanding
.load() % pools
) << endl
;
696 totQPS
+= s
->queryLoad
;
697 totQueries
+= s
->queries
.load();
698 totDrops
+= s
->reuseds
.load();
702 ret
<< (fmt
% "All" % "" % "" % ""
704 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" % "" ) << endl
;
706 ret
<< (fmt
% "All" % "" % "" % ""
708 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" ) << endl
;
711 g_outputBuffer
=ret
.str();
712 } catch(std::exception
& e
) {
713 g_outputBuffer
=e
.what();
718 g_lua
.writeFunction("getServers", []() {
719 setLuaNoSideEffect();
720 vector
<pair
<int, std::shared_ptr
<DownstreamState
> > > ret
;
722 for(const auto& s
: g_dstates
.getCopy()) {
723 ret
.push_back(make_pair(count
++, s
));
728 g_lua
.writeFunction("getPoolServers", [](string pool
) {
729 return getDownstreamCandidates(g_pools
.getCopy(), pool
);
732 g_lua
.writeFunction("getServer", [client
](boost::variant
<unsigned int, std::string
> i
) {
734 return std::make_shared
<DownstreamState
>(ComboAddress());
736 auto states
= g_dstates
.getCopy();
737 if (auto str
= boost::get
<std::string
>(&i
)) {
738 const auto uuid
= getUniqueID(*str
);
739 for (auto& state
: states
) {
740 if (state
->id
== uuid
) {
745 else if (auto pos
= boost::get
<unsigned int>(&i
)) {
746 return states
.at(*pos
);
749 g_outputBuffer
= "Error: no rule matched\n";
750 return std::shared_ptr
<DownstreamState
>(nullptr);
753 g_lua
.writeFunction("carbonServer", [](const std::string
& address
, boost::optional
<string
> ourName
,
754 boost::optional
<unsigned int> interval
, boost::optional
<string
> namespace_name
,
755 boost::optional
<string
> instance_name
) {
757 auto ours
= g_carbon
.getCopy();
759 ComboAddress(address
, 2003),
760 (namespace_name
&& !namespace_name
->empty()) ? *namespace_name
: "dnsdist",
761 ourName
? *ourName
: "",
762 (instance_name
&& !instance_name
->empty()) ? *instance_name
: "main" ,
763 interval
? *interval
: 30
765 g_carbon
.setState(ours
);
768 g_lua
.writeFunction("webserver", [client
,configCheck
](const std::string
& address
, const std::string
& password
, const boost::optional
<std::string
> apiKey
, const boost::optional
<std::map
<std::string
, std::string
> > customHeaders
) {
772 local
= ComboAddress(address
);
774 catch (const PDNSException
& e
) {
775 throw std::runtime_error(std::string("Error parsing the bind address for the webserver: ") + e
.reason
);
778 if (client
|| configCheck
) {
783 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
784 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
787 auto launch
=[sock
, local
, password
, apiKey
, customHeaders
]() {
788 setWebserverPassword(password
);
789 setWebserverAPIKey(apiKey
);
790 setWebserverCustomHeaders(customHeaders
);
791 thread
t(dnsdistWebserverThread
, sock
, local
);
795 g_launchWork
->push_back(launch
);
799 catch(std::exception
& e
) {
800 g_outputBuffer
="Unable to bind to webserver socket on " + local
.toStringWithPort() + ": " + e
.what();
801 errlog("Unable to bind to webserver socket on %s: %s", local
.toStringWithPort(), e
.what());
806 typedef std::unordered_map
<std::string
, boost::variant
<std::string
, std::map
<std::string
, std::string
>> > webserveropts_t
;
808 g_lua
.writeFunction("setWebserverConfig", [](boost::optional
<webserveropts_t
> vars
) {
814 if(vars
->count("password")) {
815 const std::string password
= boost::get
<std::string
>(vars
->at("password"));
817 setWebserverPassword(password
);
819 if(vars
->count("apiKey")) {
820 const std::string apiKey
= boost::get
<std::string
>(vars
->at("apiKey"));
822 setWebserverAPIKey(apiKey
);
824 if(vars
->count("customHeaders")) {
825 const boost::optional
<std::map
<std::string
, std::string
> > headers
= boost::get
<std::map
<std::string
, std::string
> >(vars
->at("customHeaders"));
827 setWebserverCustomHeaders(headers
);
831 g_lua
.writeFunction("controlSocket", [client
,configCheck
](const std::string
& str
) {
833 ComboAddress
local(str
, 5199);
835 if(client
|| configCheck
) {
836 g_serverControl
= local
;
840 g_consoleEnabled
= true;
841 #ifdef HAVE_LIBSODIUM
842 if (g_configurationDone
&& g_consoleKey
.empty()) {
843 warnlog("Warning, the console has been enabled via 'controlSocket()' but no key has been set with 'setKey()' so all connections will fail until a key has been set");
848 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
849 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
852 auto launch
=[sock
, local
]() {
853 thread
t(controlThread
, sock
, local
);
857 g_launchWork
->push_back(launch
);
862 catch(std::exception
& e
) {
863 g_outputBuffer
="Unable to bind to control socket on " + local
.toStringWithPort() + ": " + e
.what();
864 errlog("Unable to bind to control socket on %s: %s", local
.toStringWithPort(), e
.what());
868 g_lua
.writeFunction("addConsoleACL", [](const std::string
& netmask
) {
870 #ifndef HAVE_LIBSODIUM
871 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
874 g_consoleACL
.modify([netmask
](NetmaskGroup
& nmg
) { nmg
.addMask(netmask
); });
877 g_lua
.writeFunction("setConsoleACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
880 #ifndef HAVE_LIBSODIUM
881 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
885 if(auto str
= boost::get
<string
>(&inp
)) {
888 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
889 nmg
.addMask(p
.second
);
891 g_consoleACL
.setState(nmg
);
894 g_lua
.writeFunction("showConsoleACL", []() {
895 setLuaNoSideEffect();
897 #ifndef HAVE_LIBSODIUM
898 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
902 g_consoleACL
.getLocal()->toStringVector(&vec
);
904 for(const auto& s
: vec
) {
905 g_outputBuffer
+= s
+ "\n";
909 g_lua
.writeFunction("clearQueryCounters", []() {
910 unsigned int size
{0};
912 WriteLock
wl(&g_qcount
.queryLock
);
913 size
= g_qcount
.records
.size();
914 g_qcount
.records
.clear();
917 boost::format
fmt("%d records cleared from query counter buffer\n");
918 g_outputBuffer
= (fmt
% size
).str();
921 g_lua
.writeFunction("getQueryCounters", [](boost::optional
<unsigned int> optMax
) {
922 setLuaNoSideEffect();
923 ReadLock
rl(&g_qcount
.queryLock
);
924 g_outputBuffer
= "query counting is currently: ";
925 g_outputBuffer
+= g_qcount
.enabled
? "enabled" : "disabled";
926 g_outputBuffer
+= (boost::format(" (%d records in buffer)\n") % g_qcount
.records
.size()).str();
928 boost::format
fmt("%-3d %s: %d request(s)\n");
929 QueryCountRecords::iterator it
;
930 unsigned int max
= optMax
? *optMax
: 10;
931 unsigned int index
{1};
932 for(it
= g_qcount
.records
.begin(); it
!= g_qcount
.records
.end() && index
<= max
; ++it
, ++index
) {
933 g_outputBuffer
+= (fmt
% index
% it
->first
% it
->second
).str();
937 g_lua
.writeFunction("setQueryCount", [](bool enabled
) { g_qcount
.enabled
=enabled
; });
939 g_lua
.writeFunction("setQueryCountFilter", [](QueryCountFilter func
) {
940 g_qcount
.filter
= func
;
943 g_lua
.writeFunction("makeKey", []() {
944 setLuaNoSideEffect();
945 g_outputBuffer
="setKey("+newKey()+")\n";
948 g_lua
.writeFunction("setKey", [](const std::string
& key
) {
949 if(!g_configurationDone
&& ! g_consoleKey
.empty()) { // this makes sure the commandline -k key prevails over dnsdist.conf
950 return; // but later setKeys() trump the -k value again
952 #ifndef HAVE_LIBSODIUM
953 warnlog("Calling setKey() while libsodium support has not been enabled is not secure, and will result in cleartext communications");
958 if(B64Decode(key
, newkey
) < 0) {
959 g_outputBuffer
=string("Unable to decode ")+key
+" as Base64";
960 errlog("%s", g_outputBuffer
);
966 g_lua
.writeFunction("testCrypto", [](boost::optional
<string
> optTestMsg
)
968 setLuaNoSideEffect();
969 #ifdef HAVE_LIBSODIUM
974 testmsg
= *optTestMsg
;
977 testmsg
= "testStringForCryptoTests";
983 string encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
984 string decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
989 encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
990 decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
992 if(testmsg
== decrypted
)
993 g_outputBuffer
="Everything is ok!\n";
995 g_outputBuffer
="Crypto failed.. (the decoded value does not match the cleartext one)\n";
997 catch(const std::exception
& e
) {
998 g_outputBuffer
="Crypto failed: "+std::string(e
.what())+"\n";
1001 g_outputBuffer
="Crypto failed..\n";
1004 g_outputBuffer
="Crypto not available.\n";
1008 g_lua
.writeFunction("setTCPRecvTimeout", [](int timeout
) { g_tcpRecvTimeout
=timeout
; });
1010 g_lua
.writeFunction("setTCPSendTimeout", [](int timeout
) { g_tcpSendTimeout
=timeout
; });
1012 g_lua
.writeFunction("setUDPTimeout", [](int timeout
) { g_udpTimeout
=timeout
; });
1014 g_lua
.writeFunction("setMaxUDPOutstanding", [](uint16_t max
) {
1015 if (!g_configurationDone
) {
1016 g_maxOutstanding
= max
;
1018 g_outputBuffer
="Max UDP outstanding cannot be altered at runtime!\n";
1022 g_lua
.writeFunction("setMaxTCPClientThreads", [](uint64_t max
) {
1023 if (!g_configurationDone
) {
1024 g_maxTCPClientThreads
= max
;
1026 g_outputBuffer
="Maximum TCP client threads count cannot be altered at runtime!\n";
1030 g_lua
.writeFunction("setMaxTCPQueuedConnections", [](uint64_t max
) {
1031 if (!g_configurationDone
) {
1032 g_maxTCPQueuedConnections
= max
;
1034 g_outputBuffer
="The maximum number of queued TCP connections cannot be altered at runtime!\n";
1038 g_lua
.writeFunction("setMaxTCPQueriesPerConnection", [](size_t max
) {
1039 if (!g_configurationDone
) {
1040 g_maxTCPQueriesPerConn
= max
;
1042 g_outputBuffer
="The maximum number of queries per TCP connection cannot be altered at runtime!\n";
1046 g_lua
.writeFunction("setMaxTCPConnectionsPerClient", [](size_t max
) {
1047 if (!g_configurationDone
) {
1048 g_maxTCPConnectionsPerClient
= max
;
1050 g_outputBuffer
="The maximum number of TCP connection per client cannot be altered at runtime!\n";
1054 g_lua
.writeFunction("setMaxTCPConnectionDuration", [](size_t max
) {
1055 if (!g_configurationDone
) {
1056 g_maxTCPConnectionDuration
= max
;
1058 g_outputBuffer
="The maximum duration of a TCP connection cannot be altered at runtime!\n";
1062 g_lua
.writeFunction("setCacheCleaningDelay", [](uint32_t delay
) { g_cacheCleaningDelay
= delay
; });
1064 g_lua
.writeFunction("setCacheCleaningPercentage", [](uint16_t percentage
) { if (percentage
< 100) g_cacheCleaningPercentage
= percentage
; else g_cacheCleaningPercentage
= 100; });
1066 g_lua
.writeFunction("setECSSourcePrefixV4", [](uint16_t prefix
) { g_ECSSourcePrefixV4
=prefix
; });
1068 g_lua
.writeFunction("setECSSourcePrefixV6", [](uint16_t prefix
) { g_ECSSourcePrefixV6
=prefix
; });
1070 g_lua
.writeFunction("setECSOverride", [](bool override
) { g_ECSOverride
=override
; });
1072 g_lua
.writeFunction("setPreserveTrailingData", [](bool preserve
) { g_preserveTrailingData
= preserve
; });
1074 g_lua
.writeFunction("showDynBlocks", []() {
1075 setLuaNoSideEffect();
1076 auto slow
= g_dynblockNMG
.getCopy();
1077 struct timespec now
;
1079 boost::format
fmt("%-24s %8d %8d %-10s %-20s %s\n");
1080 g_outputBuffer
= (fmt
% "What" % "Seconds" % "Blocks" % "Warning" % "Action" % "Reason").str();
1081 for(const auto& e
: slow
) {
1082 if(now
< e
.second
.until
)
1083 g_outputBuffer
+= (fmt
% e
.first
.toString() % (e
.second
.until
.tv_sec
- now
.tv_sec
) % e
.second
.blocks
% (e
.second
.warning
? "true" : "false") % DNSAction::typeToString(e
.second
.action
!= DNSAction::Action::None
? e
.second
.action
: g_dynBlockAction
) % e
.second
.reason
).str();
1085 auto slow2
= g_dynblockSMT
.getCopy();
1086 slow2
.visit([&now
, &fmt
](const SuffixMatchTree
<DynBlock
>& node
) {
1087 if(now
<node
.d_value
.until
) {
1088 string
dom("empty");
1089 if(!node
.d_value
.domain
.empty())
1090 dom
= node
.d_value
.domain
.toString();
1091 g_outputBuffer
+= (fmt
% dom
% (node
.d_value
.until
.tv_sec
- now
.tv_sec
) % node
.d_value
.blocks
% (node
.d_value
.warning
? "true" : "false") % DNSAction::typeToString(node
.d_value
.action
!= DNSAction::Action::None
? node
.d_value
.action
: g_dynBlockAction
) % node
.d_value
.reason
).str();
1097 g_lua
.writeFunction("clearDynBlocks", []() {
1100 g_dynblockNMG
.setState(nmg
);
1101 SuffixMatchTree
<DynBlock
> smt
;
1102 g_dynblockSMT
.setState(smt
);
1105 g_lua
.writeFunction("addDynBlocks",
1106 [](const std::unordered_map
<ComboAddress
,unsigned int, ComboAddress::addressOnlyHash
, ComboAddress::addressOnlyEqual
>& m
, const std::string
& msg
, boost::optional
<int> seconds
, boost::optional
<DNSAction::Action
> action
) {
1111 auto slow
= g_dynblockNMG
.getCopy();
1112 struct timespec until
, now
;
1115 int actualSeconds
= seconds
? *seconds
: 10;
1116 until
.tv_sec
+= actualSeconds
;
1117 for(const auto& capair
: m
) {
1118 unsigned int count
= 0;
1119 auto got
= slow
.lookup(Netmask(capair
.first
));
1122 if(until
< got
->second
.until
) // had a longer policy
1124 if(now
< got
->second
.until
) // only inherit count on fresh query we are extending
1125 count
=got
->second
.blocks
;
1129 DynBlock db
{msg
,until
,DNSName(),(action
? *action
: DNSAction::Action::None
)};
1132 warnlog("Inserting dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
);
1133 slow
.insert(Netmask(capair
.first
)).second
=db
;
1135 g_dynblockNMG
.setState(slow
);
1138 g_lua
.writeFunction("addDynBlockSMT",
1139 [](const vector
<pair
<unsigned int, string
> >&names
, const std::string
& msg
, boost::optional
<int> seconds
, boost::optional
<DNSAction::Action
> action
) {
1140 if (names
.empty()) {
1144 auto slow
= g_dynblockSMT
.getCopy();
1145 struct timespec until
, now
;
1148 int actualSeconds
= seconds
? *seconds
: 10;
1149 until
.tv_sec
+= actualSeconds
;
1151 for(const auto& capair
: names
) {
1152 unsigned int count
= 0;
1153 DNSName
domain(capair
.second
);
1154 domain
.makeUsLowerCase();
1155 auto got
= slow
.lookup(domain
);
1158 if(until
< got
->until
) // had a longer policy
1160 if(now
< got
->until
) // only inherit count on fresh query we are extending
1166 DynBlock db
{msg
,until
,domain
,(action
? *action
: DNSAction::Action::None
)};
1169 warnlog("Inserting dynamic block for %s for %d seconds: %s", domain
, actualSeconds
, msg
);
1170 slow
.add(domain
, db
);
1172 g_dynblockSMT
.setState(slow
);
1175 g_lua
.writeFunction("setDynBlocksAction", [](DNSAction::Action action
) {
1176 if (!g_configurationDone
) {
1177 if (action
== DNSAction::Action::Drop
|| action
== DNSAction::Action::NoOp
|| action
== DNSAction::Action::Nxdomain
|| action
== DNSAction::Action::Refused
|| action
== DNSAction::Action::Truncate
|| action
== DNSAction::Action::NoRecurse
) {
1178 g_dynBlockAction
= action
;
1181 errlog("Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!");
1182 g_outputBuffer
="Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!\n";
1185 g_outputBuffer
="Dynamic blocks action cannot be altered at runtime!\n";
1189 g_lua
.writeFunction("addDNSCryptBind", [](const std::string
& addr
, const std::string
& providerName
, boost::variant
<std::string
, std::vector
<std::pair
<int, std::string
>>> certFiles
, boost::variant
<std::string
, std::vector
<std::pair
<int, std::string
>>> keyFiles
, boost::optional
<localbind_t
> vars
) {
1190 if (g_configurationDone
) {
1191 g_outputBuffer
="addDNSCryptBind cannot be used at runtime!\n";
1194 #ifdef HAVE_DNSCRYPT
1195 bool reusePort
= false;
1196 int tcpFastOpenQueueSize
= 0;
1197 std::string interface
;
1199 std::vector
<DNSCryptContext::CertKeyPaths
> certKeys
;
1201 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1203 if (certFiles
.type() == typeid(std::string
) && keyFiles
.type() == typeid(std::string
)) {
1204 auto certFile
= boost::get
<std::string
>(certFiles
);
1205 auto keyFile
= boost::get
<std::string
>(keyFiles
);
1206 certKeys
.push_back({certFile
, keyFile
});
1208 else if (certFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>) && keyFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1209 auto certFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(certFiles
);
1210 auto keyFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(keyFiles
);
1211 if (certFilesVect
.size() == keyFilesVect
.size()) {
1212 for (size_t idx
= 0; idx
< certFilesVect
.size(); idx
++) {
1213 certKeys
.push_back({certFilesVect
.at(idx
).second
, keyFilesVect
.at(idx
).second
});
1217 errlog("Error, mismatching number of certificates and keys in call to addDNSCryptBind!");
1218 g_outputBuffer
="Error, mismatching number of certificates and keys in call to addDNSCryptBind()!";
1223 errlog("Error, mismatching number of certificates and keys in call to addDNSCryptBind()!");
1224 g_outputBuffer
="Error, mismatching number of certificates and keys in call to addDNSCryptBind()!";
1229 auto ctx
= std::make_shared
<DNSCryptContext
>(providerName
, certKeys
);
1232 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1233 cs
->dnscryptCtx
= ctx
;
1234 g_dnsCryptLocals
.push_back(ctx
);
1235 g_frontends
.push_back(std::move(cs
));
1238 cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1239 cs
->dnscryptCtx
= ctx
;
1240 g_frontends
.push_back(std::move(cs
));
1242 catch(std::exception
& e
) {
1244 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1247 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1252 g_lua
.writeFunction("showDNSCryptBinds", []() {
1253 setLuaNoSideEffect();
1254 #ifdef HAVE_DNSCRYPT
1256 boost::format
fmt("%1$-3d %2% %|25t|%3$-20.20s");
1257 ret
<< (fmt
% "#" % "Address" % "Provider Name") << endl
;
1260 std::unordered_set
<std::shared_ptr
<DNSCryptContext
>> contexts
;
1261 for (const auto& frontend
: g_frontends
) {
1262 const std::shared_ptr
<DNSCryptContext
> ctx
= frontend
->dnscryptCtx
;
1263 if (!ctx
|| contexts
.count(ctx
) != 0) {
1266 contexts
.insert(ctx
);
1267 ret
<< (fmt
% idx
% frontend
->local
.toStringWithPort() % ctx
->getProviderName()) << endl
;
1271 g_outputBuffer
=ret
.str();
1273 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1277 g_lua
.writeFunction("getDNSCryptBind", [](size_t idx
) {
1278 setLuaNoSideEffect();
1279 #ifdef HAVE_DNSCRYPT
1280 std::shared_ptr
<DNSCryptContext
> ret
= nullptr;
1281 if (idx
< g_dnsCryptLocals
.size()) {
1282 ret
= g_dnsCryptLocals
.at(idx
);
1286 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1290 g_lua
.writeFunction("getDNSCryptBindCount", []() {
1291 setLuaNoSideEffect();
1292 return g_dnsCryptLocals
.size();
1295 g_lua
.writeFunction("generateDNSCryptProviderKeys", [client
](const std::string
& publicKeyFile
, const std::string privateKeyFile
) {
1296 setLuaNoSideEffect();
1297 #ifdef HAVE_DNSCRYPT
1301 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1302 unsigned char privateKey
[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE
];
1303 sodium_mlock(privateKey
, sizeof(privateKey
));
1306 DNSCryptContext::generateProviderKeys(publicKey
, privateKey
);
1308 ofstream
pubKStream(publicKeyFile
);
1309 pubKStream
.write((char*) publicKey
, sizeof(publicKey
));
1312 ofstream
privKStream(privateKeyFile
);
1313 privKStream
.write((char*) privateKey
, sizeof(privateKey
));
1314 privKStream
.close();
1316 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1318 catch(std::exception
& e
) {
1320 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1323 sodium_memzero(privateKey
, sizeof(privateKey
));
1324 sodium_munlock(privateKey
, sizeof(privateKey
));
1326 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1330 g_lua
.writeFunction("printDNSCryptProviderFingerprint", [](const std::string
& publicKeyFile
) {
1331 setLuaNoSideEffect();
1332 #ifdef HAVE_DNSCRYPT
1333 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1336 ifstream
file(publicKeyFile
);
1337 file
.read((char *) &publicKey
, sizeof(publicKey
));
1340 throw std::runtime_error("Invalid dnscrypt provider public key file " + publicKeyFile
);
1343 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1345 catch(std::exception
& e
) {
1347 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1350 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1354 #ifdef HAVE_DNSCRYPT
1355 g_lua
.writeFunction("generateDNSCryptCertificate", [client
](const std::string
& providerPrivateKeyFile
, const std::string
& certificateFile
, const std::string privateKeyFile
, uint32_t serial
, time_t begin
, time_t end
, boost::optional
<DNSCryptExchangeVersion
> version
) {
1356 setLuaNoSideEffect();
1360 DNSCryptPrivateKey privateKey
;
1364 if (generateDNSCryptCertificate(providerPrivateKeyFile
, serial
, begin
, end
, version
? *version
: DNSCryptExchangeVersion::VERSION1
, cert
, privateKey
)) {
1365 privateKey
.saveToFile(privateKeyFile
);
1366 DNSCryptContext::saveCertFromFile(cert
, certificateFile
);
1369 catch(const std::exception
& e
) {
1371 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1376 g_lua
.writeFunction("showPools", []() {
1377 setLuaNoSideEffect();
1380 boost::format
fmt("%1$-20.20s %|25t|%2$20s %|25t|%3$20s %|50t|%4%" );
1382 ret
<< (fmt
% "Name" % "Cache" % "ServerPolicy" % "Servers" ) << endl
;
1384 const auto localPools
= g_pools
.getCopy();
1385 for (const auto& entry
: localPools
) {
1386 const string
& name
= entry
.first
;
1387 const std::shared_ptr
<ServerPool
> pool
= entry
.second
;
1388 string cache
= pool
->packetCache
!= nullptr ? pool
->packetCache
->toString() : "";
1389 string policy
= g_policy
.getLocal()->name
;
1390 if (pool
->policy
!= nullptr) {
1391 policy
= pool
->policy
->name
;
1395 for (const auto& server
: pool
->getServers()) {
1396 if (!servers
.empty()) {
1399 if (!server
.second
->getName().empty()) {
1400 servers
+= server
.second
->getName();
1403 servers
+= server
.second
->remote
.toStringWithPort();
1406 ret
<< (fmt
% name
% cache
% policy
% servers
) << endl
;
1408 g_outputBuffer
=ret
.str();
1409 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1412 g_lua
.writeFunction("getPool", [client
](const string
& poolName
) {
1414 return std::make_shared
<ServerPool
>();
1416 auto localPools
= g_pools
.getCopy();
1417 std::shared_ptr
<ServerPool
> pool
= createPoolIfNotExists(localPools
, poolName
);
1418 g_pools
.setState(localPools
);
1422 g_lua
.writeFunction("setVerboseHealthChecks", [](bool verbose
) { g_verboseHealthChecks
=verbose
; });
1423 g_lua
.writeFunction("setStaleCacheEntriesTTL", [](uint32_t ttl
) { g_staleCacheEntriesTTL
= ttl
; });
1425 g_lua
.writeFunction("showBinds", []() {
1426 setLuaNoSideEffect();
1429 boost::format
fmt("%1$-3d %2$-20.20s %|35t|%3$-20.20s %|57t|%4%" );
1431 ret
<< (fmt
% "#" % "Address" % "Protocol" % "Queries" ) << endl
;
1434 for (const auto& front
: g_frontends
) {
1435 ret
<< (fmt
% counter
% front
->local
.toStringWithPort() % front
->getType() % front
->queries
) << endl
;
1438 g_outputBuffer
=ret
.str();
1439 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1442 g_lua
.writeFunction("getBind", [](size_t num
) {
1443 setLuaNoSideEffect();
1444 ClientState
* ret
= nullptr;
1445 if(num
< g_frontends
.size()) {
1446 ret
=g_frontends
[num
].get();
1451 g_lua
.writeFunction("getBindCount", []() {
1452 setLuaNoSideEffect();
1453 return g_frontends
.size();
1456 g_lua
.writeFunction("help", [](boost::optional
<std::string
> command
) {
1457 setLuaNoSideEffect();
1458 g_outputBuffer
= "";
1459 for (const auto& keyword
: g_consoleKeywords
) {
1461 g_outputBuffer
+= keyword
.toString() + "\n";
1463 else if (keyword
.name
== command
) {
1464 g_outputBuffer
= keyword
.toString() + "\n";
1469 g_outputBuffer
= "Nothing found for " + *command
+ "\n";
1473 g_lua
.writeFunction("showVersion", []() {
1474 setLuaNoSideEffect();
1475 g_outputBuffer
= "dnsdist " + std::string(VERSION
) + "\n";
1478 g_lua
.writeFunction("showSecurityStatus", []() {
1479 setLuaNoSideEffect();
1480 g_outputBuffer
= std::to_string(g_stats
.securityStatus
) + "\n";
1484 g_lua
.writeFunction("setDefaultBPFFilter", [](std::shared_ptr
<BPFFilter
> bpf
) {
1485 if (g_configurationDone
) {
1486 g_outputBuffer
="setDefaultBPFFilter() cannot be used at runtime!\n";
1489 g_defaultBPFFilter
= bpf
;
1492 g_lua
.writeFunction("registerDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1494 g_dynBPFFilters
.push_back(dbpf
);
1498 g_lua
.writeFunction("unregisterDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1500 for (auto it
= g_dynBPFFilters
.begin(); it
!= g_dynBPFFilters
.end(); it
++) {
1502 g_dynBPFFilters
.erase(it
);
1509 g_lua
.writeFunction("addBPFFilterDynBlocks", [](const std::unordered_map
<ComboAddress
,unsigned int, ComboAddress::addressOnlyHash
, ComboAddress::addressOnlyEqual
>& m
, std::shared_ptr
<DynBPFFilter
> dynbpf
, boost::optional
<int> seconds
, boost::optional
<std::string
> msg
) {
1511 struct timespec until
, now
;
1512 clock_gettime(CLOCK_MONOTONIC
, &now
);
1514 int actualSeconds
= seconds
? *seconds
: 10;
1515 until
.tv_sec
+= actualSeconds
;
1516 for(const auto& capair
: m
) {
1517 if (dynbpf
->block(capair
.first
, until
)) {
1518 warnlog("Inserting eBPF dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
? *msg
: "");
1523 #endif /* HAVE_EBPF */
1525 g_lua
.writeFunction
<std::unordered_map
<string
,uint64_t>()>("getStatisticsCounters", []() {
1526 setLuaNoSideEffect();
1527 std::unordered_map
<string
,uint64_t> res
;
1528 for(const auto& entry
: g_stats
.entries
) {
1529 if(const auto& val
= boost::get
<DNSDistStats::stat_t
*>(&entry
.second
))
1530 res
[entry
.first
] = (*val
)->load();
1535 g_lua
.writeFunction("includeDirectory", [](const std::string
& dirname
) {
1536 if (g_configurationDone
) {
1537 errlog("includeDirectory() cannot be used at runtime!");
1538 g_outputBuffer
="includeDirectory() cannot be used at runtime!\n";
1543 errlog("includeDirectory() cannot be used recursively!");
1544 g_outputBuffer
="includeDirectory() cannot be used recursively!\n";
1550 if (stat(dirname
.c_str(), &st
)) {
1551 errlog("The included directory %s does not exist!", dirname
.c_str());
1552 g_outputBuffer
="The included directory " + dirname
+ " does not exist!";
1556 if (!S_ISDIR(st
.st_mode
)) {
1557 errlog("The included directory %s is not a directory!", dirname
.c_str());
1558 g_outputBuffer
="The included directory " + dirname
+ " is not a directory!";
1564 std::list
<std::string
> files
;
1565 if (!(dirp
= opendir(dirname
.c_str()))) {
1566 errlog("Error opening the included directory %s!", dirname
.c_str());
1567 g_outputBuffer
="Error opening the included directory " + dirname
+ "!";
1571 while((ent
= readdir(dirp
)) != NULL
) {
1572 if (ent
->d_name
[0] == '.') {
1576 if (boost::ends_with(ent
->d_name
, ".conf")) {
1577 std::ostringstream namebuf
;
1578 namebuf
<< dirname
.c_str() << "/" << ent
->d_name
;
1580 if (stat(namebuf
.str().c_str(), &st
) || !S_ISREG(st
.st_mode
)) {
1584 files
.push_back(namebuf
.str());
1591 for (auto file
= files
.begin(); file
!= files
.end(); ++file
) {
1592 std::ifstream
ifs(*file
);
1594 warnlog("Unable to read configuration from '%s'", *file
);
1596 vinfolog("Read configuration from '%s'", *file
);
1599 g_lua
.executeCode(ifs
);
1605 g_lua
.writeFunction("setAPIWritable", [](bool writable
, boost::optional
<std::string
> apiConfigDir
) {
1607 g_apiReadWrite
= writable
;
1609 if (!(*apiConfigDir
).empty()) {
1610 g_apiConfigDirectory
= *apiConfigDir
;
1613 errlog("The API configuration directory value cannot be empty!");
1614 g_outputBuffer
="The API configuration directory value cannot be empty!";
1619 g_lua
.writeFunction("setServFailWhenNoServer", [](bool servfail
) {
1621 g_servFailOnNoPolicy
= servfail
;
1624 g_lua
.writeFunction("setRoundRobinFailOnNoServer", [](bool fail
) {
1626 g_roundrobinFailOnNoServer
= fail
;
1629 g_lua
.writeFunction("setConsistentHashingBalancingFactor", [](double factor
) {
1632 g_consistentHashBalancingFactor
= factor
;
1635 errlog("Invalid value passed to setConsistentHashingBalancingFactor()!");
1636 g_outputBuffer
="Invalid value passed to setConsistentHashingBalancingFactor()!\n";
1641 g_lua
.writeFunction("setRingBuffersSize", [](size_t capacity
, boost::optional
<size_t> numberOfShards
) {
1643 if (g_configurationDone
) {
1644 errlog("setRingBuffersSize() cannot be used at runtime!");
1645 g_outputBuffer
="setRingBuffersSize() cannot be used at runtime!\n";
1648 g_rings
.setCapacity(capacity
, numberOfShards
? *numberOfShards
: 1);
1651 g_lua
.writeFunction("setRingBuffersLockRetries", [](size_t retries
) {
1653 g_rings
.setNumberOfLockRetries(retries
);
1656 g_lua
.writeFunction("setWHashedPertubation", [](uint32_t pertub
) {
1658 g_hashperturb
= pertub
;
1661 g_lua
.writeFunction("setTCPUseSinglePipe", [](bool flag
) {
1662 if (g_configurationDone
) {
1663 g_outputBuffer
="setTCPUseSinglePipe() cannot be used at runtime!\n";
1667 g_useTCPSinglePipe
= flag
;
1670 g_lua
.writeFunction("snmpAgent", [client
,configCheck
](bool enableTraps
, boost::optional
<std::string
> masterSocket
) {
1671 if(client
|| configCheck
)
1673 #ifdef HAVE_NET_SNMP
1674 if (g_configurationDone
) {
1675 errlog("snmpAgent() cannot be used at runtime!");
1676 g_outputBuffer
="snmpAgent() cannot be used at runtime!\n";
1680 if (g_snmpEnabled
) {
1681 errlog("snmpAgent() cannot be used twice!");
1682 g_outputBuffer
="snmpAgent() cannot be used twice!\n";
1686 g_snmpEnabled
= true;
1687 g_snmpTrapsEnabled
= enableTraps
;
1688 g_snmpAgent
= new DNSDistSNMPAgent("dnsdist", masterSocket
? *masterSocket
: std::string());
1690 errlog("NET SNMP support is required to use snmpAgent()");
1691 g_outputBuffer
="NET SNMP support is required to use snmpAgent()\n";
1692 #endif /* HAVE_NET_SNMP */
1695 g_lua
.writeFunction("sendCustomTrap", [](const std::string
& str
) {
1696 if (g_snmpAgent
&& g_snmpTrapsEnabled
) {
1697 g_snmpAgent
->sendCustomTrap(str
);
1701 g_lua
.writeFunction("setServerPolicy", [](ServerPolicy policy
) {
1703 g_policy
.setState(policy
);
1706 g_lua
.writeFunction("setServerPolicyLua", [](string name
, ServerPolicy::policyfunc_t policy
) {
1708 g_policy
.setState(ServerPolicy
{name
, policy
, true});
1711 g_lua
.writeFunction("setServerPolicyLuaFFI", [](string name
, ServerPolicy::ffipolicyfunc_t policy
) {
1713 auto pol
= ServerPolicy(name
, policy
);
1714 g_policy
.setState(std::move(pol
));
1717 g_lua
.writeFunction("showServerPolicy", []() {
1719 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1722 g_lua
.writeFunction("setPoolServerPolicy", [](ServerPolicy policy
, string pool
) {
1724 auto localPools
= g_pools
.getCopy();
1725 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(policy
));
1726 g_pools
.setState(localPools
);
1729 g_lua
.writeFunction("setPoolServerPolicyLua", [](string name
, ServerPolicy::policyfunc_t policy
, string pool
) {
1731 auto localPools
= g_pools
.getCopy();
1732 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(ServerPolicy
{name
, policy
, true}));
1733 g_pools
.setState(localPools
);
1736 g_lua
.writeFunction("showPoolServerPolicy", [](string pool
) {
1738 auto localPools
= g_pools
.getCopy();
1739 auto poolObj
= getPool(localPools
, pool
);
1740 if (poolObj
->policy
== nullptr) {
1741 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1743 g_outputBuffer
=poolObj
->policy
->name
+"\n";
1747 g_lua
.writeFunction("setTCPDownstreamCleanupInterval", [](uint16_t interval
) {
1749 g_downstreamTCPCleanupInterval
= interval
;
1752 g_lua
.writeFunction("setConsoleConnectionsLogging", [](bool enabled
) {
1753 g_logConsoleConnections
= enabled
;
1756 g_lua
.writeFunction("setConsoleOutputMaxMsgSize", [](uint32_t size
) {
1757 g_consoleOutputMsgMaxSize
= size
;
1760 g_lua
.writeFunction("setUDPMultipleMessagesVectorSize", [](size_t vSize
) {
1761 if (g_configurationDone
) {
1762 errlog("setUDPMultipleMessagesVectorSize() cannot be used at runtime!");
1763 g_outputBuffer
="setUDPMultipleMessagesVectorSize() cannot be used at runtime!\n";
1766 #if defined(HAVE_RECVMMSG) && defined(HAVE_SENDMMSG) && defined(MSG_WAITFORONE)
1768 g_udpVectorSize
= vSize
;
1770 errlog("recvmmsg() support is not available!");
1771 g_outputBuffer
="recvmmsg support is not available!\n";
1775 g_lua
.writeFunction("setAddEDNSToSelfGeneratedResponses", [](bool add
) {
1776 g_addEDNSToSelfGeneratedResponses
= add
;
1779 g_lua
.writeFunction("setPayloadSizeOnSelfGeneratedAnswers", [](uint16_t payloadSize
) {
1780 if (payloadSize
< 512) {
1781 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!");
1782 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!";
1785 if (payloadSize
> s_udpIncomingBufferSize
) {
1786 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to %d instead!", s_udpIncomingBufferSize
);
1787 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to " + std::to_string(s_udpIncomingBufferSize
) + " instead";
1788 payloadSize
= s_udpIncomingBufferSize
;
1790 g_PayloadSizeSelfGenAnswers
= payloadSize
;
1793 g_lua
.writeFunction("setSecurityPollSuffix", [](const std::string
& suffix
) {
1794 if (g_configurationDone
) {
1795 g_outputBuffer
="setSecurityPollSuffix() cannot be used at runtime!\n";
1799 g_secPollSuffix
= suffix
;
1802 g_lua
.writeFunction("setSecurityPollInterval", [](time_t newInterval
) {
1803 if (newInterval
<= 0) {
1804 warnlog("setSecurityPollInterval() should be > 0, skipping");
1805 g_outputBuffer
="setSecurityPollInterval() should be > 0, skipping";
1808 g_secPollInterval
= newInterval
;
1811 g_lua
.writeFunction("setSyslogFacility", [](int facility
) {
1813 if (g_configurationDone
) {
1814 g_outputBuffer
="setSyslogFacility cannot be used at runtime!\n";
1817 setSyslogFacility(facility
);
1820 g_lua
.writeFunction("addDOHLocal", [client
](const std::string
& addr
, boost::optional
<boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>>> certFiles
, boost::optional
<boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>>> keyFiles
, boost::optional
<boost::variant
<std::string
, vector
<pair
<int, std::string
> > > > urls
, boost::optional
<localbind_t
> vars
) {
1821 #ifdef HAVE_DNS_OVER_HTTPS
1826 if (g_configurationDone
) {
1827 g_outputBuffer
="addDOHLocal cannot be used at runtime!\n";
1830 auto frontend
= std::make_shared
<DOHFrontend
>();
1832 if (certFiles
&& !certFiles
->empty() && keyFiles
&& !keyFiles
->empty()) {
1833 if (!loadTLSCertificateAndKeys("addDOHLocal", frontend
->d_tlsConfig
.d_certKeyPairs
, *certFiles
, *keyFiles
)) {
1837 frontend
->d_local
= ComboAddress(addr
, 443);
1840 frontend
->d_local
= ComboAddress(addr
, 80);
1841 infolog("No certificate provided for DoH endpoint %s, running in DNS over HTTP mode instead of DNS over HTTPS", frontend
->d_local
.toStringWithPort());
1845 if (urls
->type() == typeid(std::string
)) {
1846 frontend
->d_urls
.push_back(boost::get
<std::string
>(*urls
));
1848 else if (urls
->type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1849 auto urlsVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(*urls
);
1850 for(const auto& p
: urlsVect
) {
1851 frontend
->d_urls
.push_back(p
.second
);
1856 frontend
->d_urls
= {"/"};
1859 bool reusePort
= false;
1860 int tcpFastOpenQueueSize
= 0;
1861 std::string interface
;
1865 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1867 if (vars
->count("idleTimeout")) {
1868 frontend
->d_idleTimeout
= boost::get
<int>((*vars
)["idleTimeout"]);
1871 if (vars
->count("serverTokens")) {
1872 frontend
->d_serverTokens
= boost::get
<const string
>((*vars
)["serverTokens"]);
1875 if (vars
->count("customResponseHeaders")) {
1876 for (auto const& headerMap
: boost::get
<std::map
<std::string
,std::string
>>((*vars
)["customResponseHeaders"])) {
1877 std::pair
<std::string
,std::string
> headerResponse
= std::make_pair(boost::to_lower_copy(headerMap
.first
), headerMap
.second
);
1878 frontend
->d_customResponseHeaders
.push_back(headerResponse
);
1882 if (vars
->count("sendCacheControlHeaders")) {
1883 frontend
->d_sendCacheControlHeaders
= boost::get
<bool>((*vars
)["sendCacheControlHeaders"]);
1886 parseTLSConfig(frontend
->d_tlsConfig
, "addDOHLocal", vars
);
1888 g_dohlocals
.push_back(frontend
);
1889 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_local
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1890 cs
->dohFrontend
= frontend
;
1891 g_frontends
.push_back(std::move(cs
));
1893 throw std::runtime_error("addDOHLocal() called but DNS over HTTPS support is not present!");
1897 g_lua
.writeFunction("showDOHFrontends", []() {
1898 #ifdef HAVE_DNS_OVER_HTTPS
1899 setLuaNoSideEffect();
1902 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d");
1903 ret
<< (fmt
% "#" % "Address" % "HTTP" % "HTTP/1" % "HTTP/2" % "GET" % "POST" % "Bad" % "Errors" % "Redirects" % "Valid" % "# ticket keys" % "Rotation delay" % "Next rotation") << endl
;
1905 for (const auto& ctx
: g_dohlocals
) {
1906 ret
<< (fmt
% counter
% ctx
->d_local
.toStringWithPort() % ctx
->d_httpconnects
% ctx
->d_http1Stats
.d_nbQueries
% ctx
->d_http1Stats
.d_nbQueries
% ctx
->d_getqueries
% ctx
->d_postqueries
% ctx
->d_badrequests
% ctx
->d_errorresponses
% ctx
->d_redirectresponses
% ctx
->d_validresponses
% ctx
->getTicketsKeysCount() % ctx
->getTicketsKeyRotationDelay() % ctx
->getNextTicketsKeyRotation()) << endl
;
1909 g_outputBuffer
= ret
.str();
1911 catch(const std::exception
& e
) {
1912 g_outputBuffer
= e
.what();
1916 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1920 g_lua
.writeFunction("showDOHResponseCodes", []() {
1921 #ifdef HAVE_DNS_OVER_HTTPS
1922 setLuaNoSideEffect();
1925 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d");
1926 g_outputBuffer
= "\n- HTTP/1:\n\n";
1927 ret
<< (fmt
% "#" % "Address" % "200" % "400" % "403" % "500" % "502" % "Others" ) << endl
;
1929 for (const auto& ctx
: g_dohlocals
) {
1930 ret
<< (fmt
% counter
% ctx
->d_local
.toStringWithPort() % ctx
->d_http1Stats
.d_nb200Responses
% ctx
->d_http1Stats
.d_nb400Responses
% ctx
->d_http1Stats
.d_nb403Responses
% ctx
->d_http1Stats
.d_nb500Responses
% ctx
->d_http1Stats
.d_nb502Responses
% ctx
->d_http1Stats
.d_nbOtherResponses
) << endl
;
1933 g_outputBuffer
+= ret
.str();
1936 g_outputBuffer
+= "\n- HTTP/2:\n\n";
1937 ret
<< (fmt
% "#" % "Address" % "200" % "400" % "403" % "500" % "502" % "Others" ) << endl
;
1939 for (const auto& ctx
: g_dohlocals
) {
1940 ret
<< (fmt
% counter
% ctx
->d_local
.toStringWithPort() % ctx
->d_http2Stats
.d_nb200Responses
% ctx
->d_http2Stats
.d_nb400Responses
% ctx
->d_http2Stats
.d_nb403Responses
% ctx
->d_http2Stats
.d_nb500Responses
% ctx
->d_http2Stats
.d_nb502Responses
% ctx
->d_http2Stats
.d_nbOtherResponses
) << endl
;
1943 g_outputBuffer
+= ret
.str();
1945 catch(const std::exception
& e
) {
1946 g_outputBuffer
= e
.what();
1950 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1954 g_lua
.writeFunction("getDOHFrontend", [client
](size_t index
) {
1955 std::shared_ptr
<DOHFrontend
> result
= nullptr;
1959 #ifdef HAVE_DNS_OVER_HTTPS
1960 setLuaNoSideEffect();
1962 if (index
< g_dohlocals
.size()) {
1963 result
= g_dohlocals
.at(index
);
1966 errlog("Error: trying to get DOH frontend with index %zu but we only have %zu frontend(s)\n", index
, g_dohlocals
.size());
1967 g_outputBuffer
="Error: trying to get DOH frontend with index " + std::to_string(index
) + " but we only have " + std::to_string(g_dohlocals
.size()) + " frontend(s)\n";
1970 catch(const std::exception
& e
) {
1971 g_outputBuffer
="Error while trying to get DOH frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
1972 errlog("Error while trying to get DOH frontend with index %zu: %s\n", index
, string(e
.what()));
1975 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1980 g_lua
.writeFunction("getDOHFrontendCount", []() {
1981 setLuaNoSideEffect();
1982 return g_dohlocals
.size();
1985 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("reloadCertificates", [](std::shared_ptr
<DOHFrontend
> frontend
) {
1986 if (frontend
!= nullptr) {
1987 frontend
->reloadCertificates();
1991 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<DOHFrontend
> frontend
) {
1992 if (frontend
!= nullptr) {
1993 frontend
->rotateTicketsKey(time(nullptr));
1997 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<DOHFrontend
> frontend
, const std::string
& file
) {
1998 if (frontend
!= nullptr) {
1999 frontend
->loadTicketsKeys(file
);
2003 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)(const std::map
<int, std::shared_ptr
<DOHResponseMapEntry
>>&)>("setResponsesMap", [](std::shared_ptr
<DOHFrontend
> frontend
, const std::map
<int, std::shared_ptr
<DOHResponseMapEntry
>>& map
) {
2004 if (frontend
!= nullptr) {
2005 std::vector
<std::shared_ptr
<DOHResponseMapEntry
>> newMap
;
2006 newMap
.reserve(map
.size());
2008 for (const auto& entry
: map
) {
2009 newMap
.push_back(entry
.second
);
2012 frontend
->d_responsesMap
= std::move(newMap
);
2016 g_lua
.writeFunction("addTLSLocal", [client
](const std::string
& addr
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> certFiles
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> keyFiles
, boost::optional
<localbind_t
> vars
) {
2017 #ifdef HAVE_DNS_OVER_TLS
2021 if (g_configurationDone
) {
2022 g_outputBuffer
="addTLSLocal cannot be used at runtime!\n";
2025 shared_ptr
<TLSFrontend
> frontend
= std::make_shared
<TLSFrontend
>();
2027 if (!loadTLSCertificateAndKeys("addTLSLocal", frontend
->d_tlsConfig
.d_certKeyPairs
, certFiles
, keyFiles
)) {
2031 bool reusePort
= false;
2032 int tcpFastOpenQueueSize
= 0;
2033 std::string interface
;
2037 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
2039 if (vars
->count("provider")) {
2040 frontend
->d_provider
= boost::get
<const string
>((*vars
)["provider"]);
2041 boost::algorithm::to_lower(frontend
->d_provider
);
2044 parseTLSConfig(frontend
->d_tlsConfig
, "addTLSLocal", vars
);
2048 frontend
->d_addr
= ComboAddress(addr
, 853);
2049 if (!frontend
->d_provider
.empty()) {
2050 vinfolog("Loading TLS provider '%s'", frontend
->d_provider
);
2054 vinfolog("Loading default TLS provider 'openssl'");
2056 vinfolog("Loading default TLS provider 'gnutls'");
2059 // only works pre-startup, so no sync necessary
2060 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_addr
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
2061 cs
->tlsFrontend
= frontend
;
2062 g_tlslocals
.push_back(cs
->tlsFrontend
);
2063 g_frontends
.push_back(std::move(cs
));
2065 catch(const std::exception
& e
) {
2066 g_outputBuffer
="Error: "+string(e
.what())+"\n";
2069 throw std::runtime_error("addTLSLocal() called but DNS over TLS support is not present!");
2073 g_lua
.writeFunction("showTLSContexts", []() {
2074 #ifdef HAVE_DNS_OVER_TLS
2075 setLuaNoSideEffect();
2078 boost::format
fmt("%1$-3d %2$-20.20s %|25t|%3$-14d %|40t|%4$-14d %|54t|%5$-21.21s");
2080 ret
<< (fmt
% "#" % "Address" % "# ticket keys" % "Rotation delay" % "Next rotation" ) << endl
;
2082 for (const auto& ctx
: g_tlslocals
) {
2083 ret
<< (fmt
% counter
% ctx
->d_addr
.toStringWithPort() % ctx
->getTicketsKeysCount() % ctx
->getTicketsKeyRotationDelay() % ctx
->getNextTicketsKeyRotation()) << endl
;
2086 g_outputBuffer
= ret
.str();
2088 catch(const std::exception
& e
) {
2089 g_outputBuffer
= e
.what();
2093 g_outputBuffer
="DNS over TLS support is not present!\n";
2097 g_lua
.writeFunction("getTLSContext", [](size_t index
) {
2098 std::shared_ptr
<TLSCtx
> result
= nullptr;
2099 #ifdef HAVE_DNS_OVER_TLS
2100 setLuaNoSideEffect();
2102 if (index
< g_tlslocals
.size()) {
2103 result
= g_tlslocals
.at(index
)->getContext();
2106 errlog("Error: trying to get TLS context with index %zu but we only have %zu context(s)\n", index
, g_tlslocals
.size());
2107 g_outputBuffer
="Error: trying to get TLS context with index " + std::to_string(index
) + " but we only have " + std::to_string(g_tlslocals
.size()) + " context(s)\n";
2110 catch(const std::exception
& e
) {
2111 g_outputBuffer
="Error while trying to get TLS context with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
2112 errlog("Error while trying to get TLS context with index %zu: %s\n", index
, string(e
.what()));
2115 g_outputBuffer
="DNS over TLS support is not present!\n";
2120 g_lua
.writeFunction("getTLSFrontend", [](size_t index
) {
2121 std::shared_ptr
<TLSFrontend
> result
= nullptr;
2122 #ifdef HAVE_DNS_OVER_TLS
2123 setLuaNoSideEffect();
2125 if (index
< g_tlslocals
.size()) {
2126 result
= g_tlslocals
.at(index
);
2129 errlog("Error: trying to get TLS frontend with index %zu but we only have %zu frontends\n", index
, g_tlslocals
.size());
2130 g_outputBuffer
="Error: trying to get TLS frontend with index " + std::to_string(index
) + " but we only have " + std::to_string(g_tlslocals
.size()) + " frontend(s)\n";
2133 catch(const std::exception
& e
) {
2134 g_outputBuffer
="Error while trying to get TLS frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
2135 errlog("Error while trying to get TLS frontend with index %zu: %s\n", index
, string(e
.what()));
2138 g_outputBuffer
="DNS over TLS support is not present!\n";
2143 g_lua
.writeFunction("getTLSFrontendCount", []() {
2144 setLuaNoSideEffect();
2145 return g_tlslocals
.size();
2148 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<TLSCtx
> ctx
) {
2149 if (ctx
!= nullptr) {
2150 ctx
->rotateTicketsKey(time(nullptr));
2154 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<TLSCtx
> ctx
, const std::string
& file
) {
2155 if (ctx
!= nullptr) {
2156 ctx
->loadTicketsKeys(file
);
2160 g_lua
.registerFunction
<void(std::shared_ptr
<TLSFrontend
>::*)(boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> certFiles
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> keyFiles
)>("loadNewCertificatesAndKeys", [](std::shared_ptr
<TLSFrontend
>& frontend
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> certFiles
, boost::variant
<std::string
, std::vector
<std::pair
<int,std::string
>>> keyFiles
) {
2161 #ifdef HAVE_DNS_OVER_TLS
2162 if (loadTLSCertificateAndKeys("loadNewCertificatesAndKeys", frontend
->d_tlsConfig
.d_certKeyPairs
, certFiles
, keyFiles
)) {
2163 frontend
->setupTLS();
2168 g_lua
.writeFunction("reloadAllCertificates", []() {
2169 for (auto& frontend
: g_frontends
) {
2174 #ifdef HAVE_DNSCRYPT
2175 if (frontend
->dnscryptCtx
) {
2176 frontend
->dnscryptCtx
->reloadCertificates();
2178 #endif /* HAVE_DNSCRYPT */
2179 #ifdef HAVE_DNS_OVER_TLS
2180 if (frontend
->tlsFrontend
) {
2181 frontend
->tlsFrontend
->setupTLS();
2183 #endif /* HAVE_DNS_OVER_TLS */
2184 #ifdef HAVE_DNS_OVER_HTTPS
2185 if (frontend
->dohFrontend
) {
2186 frontend
->dohFrontend
->reloadCertificates();
2188 #endif /* HAVE_DNS_OVER_HTTPS */
2190 catch(const std::exception
& e
) {
2191 errlog("Error reloading certificates for frontend %s: %s", frontend
->local
.toStringWithPort(), e
.what());
2196 g_lua
.writeFunction("setAllowEmptyResponse", [](bool allow
) { g_allowEmptyResponse
=allow
; });
2198 #if defined(HAVE_LIBSSL) && defined(HAVE_OCSP_BASIC_SIGN)
2199 g_lua
.writeFunction("generateOCSPResponse", [client
](const std::string
& certFile
, const std::string
& caCert
, const std::string
& caKey
, const std::string
& outFile
, int ndays
, int nmin
) {
2204 libssl_generate_ocsp_response(certFile
, caCert
, caKey
, outFile
, ndays
, nmin
);
2206 #endif /* HAVE_LIBSSL && HAVE_OCSP_BASIC_SIGN*/
2209 vector
<std::function
<void(void)>> setupLua(bool client
, bool configCheck
, const std::string
& config
)
2211 g_launchWork
= new vector
<std::function
<void(void)>>();
2214 setupLuaConfig(client
, configCheck
);
2215 setupLuaBindings(client
);
2216 setupLuaBindingsDNSCrypt();
2217 setupLuaBindingsDNSQuestion();
2218 setupLuaBindingsKVS(client
);
2219 setupLuaBindingsPacketCache();
2220 setupLuaBindingsProtoBuf(client
, configCheck
);
2221 setupLuaInspection();
2225 #ifdef LUAJIT_VERSION
2226 g_lua
.executeCode(getLuaFFIWrappers());
2229 std::ifstream
ifs(config
);
2231 warnlog("Unable to read configuration from '%s'", config
);
2233 vinfolog("Read configuration from '%s'", config
);
2235 g_lua
.executeCode(ifs
);
2237 auto ret
= *g_launchWork
;
2238 delete g_launchWork
;
2239 g_launchWork
= nullptr;