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("rmACL", [](const std::string
& netmask
) {
552 g_ACL
.modify([netmask
](NetmaskGroup
& nmg
) { nmg
.deleteMask(netmask
); });
555 g_lua
.writeFunction("setLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
559 if (g_configurationDone
) {
560 g_outputBuffer
="setLocal cannot be used at runtime!\n";
563 bool reusePort
= false;
564 int tcpFastOpenQueueSize
= 0;
565 std::string interface
;
568 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
571 ComboAddress
loc(addr
, 53);
572 for (auto it
= g_frontends
.begin(); it
!= g_frontends
.end(); ) {
573 /* DoH, DoT and DNSCrypt frontends are separate */
574 if ((*it
)->tlsFrontend
== nullptr && (*it
)->dnscryptCtx
== nullptr && (*it
)->dohFrontend
== nullptr) {
575 it
= g_frontends
.erase(it
);
582 // only works pre-startup, so no sync necessary
583 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
584 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
586 catch(const std::exception
& e
) {
587 g_outputBuffer
="Error: "+string(e
.what())+"\n";
591 g_lua
.writeFunction("addLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
595 if (g_configurationDone
) {
596 g_outputBuffer
="addLocal cannot be used at runtime!\n";
599 bool reusePort
= false;
600 int tcpFastOpenQueueSize
= 0;
601 std::string interface
;
604 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
607 ComboAddress
loc(addr
, 53);
608 // only works pre-startup, so no sync necessary
609 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
610 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
612 catch(std::exception
& e
) {
613 g_outputBuffer
="Error: "+string(e
.what())+"\n";
614 errlog("Error while trying to listen on %s: %s\n", addr
, string(e
.what()));
618 g_lua
.writeFunction("setACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
621 if(auto str
= boost::get
<string
>(&inp
)) {
624 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
625 nmg
.addMask(p
.second
);
630 g_lua
.writeFunction("showACL", []() {
631 setLuaNoSideEffect();
634 g_ACL
.getLocal()->toStringVector(&vec
);
636 for(const auto& s
: vec
)
637 g_outputBuffer
+=s
+"\n";
641 g_lua
.writeFunction("shutdown", []() {
643 sd_notify(0, "STOPPING=1");
644 #endif /* HAVE_SYSTEMD */
646 // Useful for debugging leaks, but might lead to race under load
647 // since other threads are still runing.
648 for(auto& frontend
: g_tlslocals
) {
653 google::protobuf::ShutdownProtobufLibrary();
654 #endif /* HAVE_PROTOBUF */
659 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
> > showserversopts_t
;
661 g_lua
.writeFunction("showServers", [](boost::optional
<showserversopts_t
> vars
) {
662 setLuaNoSideEffect();
663 bool showUUIDs
= false;
665 if (vars
->count("showUUIDs")) {
666 showUUIDs
= boost::get
<bool>((*vars
)["showUUIDs"]);
673 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$11d %14%" );
674 // 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
675 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools" % "UUID") << endl
;
677 fmt
= boost::format("%1$-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%" );
678 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools") << endl
;
681 uint64_t totQPS
{0}, totQueries
{0}, totDrops
{0};
683 auto states
= g_dstates
.getLocal();
684 for(const auto& s
: *states
) {
685 string status
= s
->getStatus();
687 for(auto& p
: s
->pools
) {
693 ret
<< (fmt
% counter
% s
->getName() % s
->remote
.toStringWithPort() %
695 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
;
697 ret
<< (fmt
% counter
% s
->getName() % s
->remote
.toStringWithPort() %
699 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
;
701 totQPS
+= s
->queryLoad
;
702 totQueries
+= s
->queries
.load();
703 totDrops
+= s
->reuseds
.load();
707 ret
<< (fmt
% "All" % "" % "" % ""
709 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" % "" ) << endl
;
711 ret
<< (fmt
% "All" % "" % "" % ""
713 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" ) << endl
;
716 g_outputBuffer
=ret
.str();
717 } catch(std::exception
& e
) {
718 g_outputBuffer
=e
.what();
723 g_lua
.writeFunction("getServers", []() {
724 setLuaNoSideEffect();
725 vector
<pair
<int, std::shared_ptr
<DownstreamState
> > > ret
;
727 for(const auto& s
: g_dstates
.getCopy()) {
728 ret
.push_back(make_pair(count
++, s
));
733 g_lua
.writeFunction("getPoolServers", [](string pool
) {
734 return getDownstreamCandidates(g_pools
.getCopy(), pool
);
737 g_lua
.writeFunction("getServer", [client
](boost::variant
<unsigned int, std::string
> i
) {
739 return std::make_shared
<DownstreamState
>(ComboAddress());
741 auto states
= g_dstates
.getCopy();
742 if (auto str
= boost::get
<std::string
>(&i
)) {
743 const auto uuid
= getUniqueID(*str
);
744 for (auto& state
: states
) {
745 if (state
->id
== uuid
) {
750 else if (auto pos
= boost::get
<unsigned int>(&i
)) {
751 return states
.at(*pos
);
754 g_outputBuffer
= "Error: no rule matched\n";
755 return std::shared_ptr
<DownstreamState
>(nullptr);
758 g_lua
.writeFunction("carbonServer", [](const std::string
& address
, boost::optional
<string
> ourName
,
759 boost::optional
<unsigned int> interval
, boost::optional
<string
> namespace_name
,
760 boost::optional
<string
> instance_name
) {
762 auto ours
= g_carbon
.getCopy();
764 ComboAddress(address
, 2003),
765 (namespace_name
&& !namespace_name
->empty()) ? *namespace_name
: "dnsdist",
766 ourName
? *ourName
: "",
767 (instance_name
&& !instance_name
->empty()) ? *instance_name
: "main" ,
768 interval
? *interval
: 30
770 g_carbon
.setState(ours
);
773 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
) {
777 local
= ComboAddress(address
);
779 catch (const PDNSException
& e
) {
780 throw std::runtime_error(std::string("Error parsing the bind address for the webserver: ") + e
.reason
);
783 if (client
|| configCheck
) {
788 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
789 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
792 auto launch
=[sock
, local
, password
, apiKey
, customHeaders
]() {
793 setWebserverPassword(password
);
794 setWebserverAPIKey(apiKey
);
795 setWebserverCustomHeaders(customHeaders
);
796 thread
t(dnsdistWebserverThread
, sock
, local
);
800 g_launchWork
->push_back(launch
);
804 catch(std::exception
& e
) {
805 g_outputBuffer
="Unable to bind to webserver socket on " + local
.toStringWithPort() + ": " + e
.what();
806 errlog("Unable to bind to webserver socket on %s: %s", local
.toStringWithPort(), e
.what());
811 typedef std::unordered_map
<std::string
, boost::variant
<std::string
, std::map
<std::string
, std::string
>> > webserveropts_t
;
813 g_lua
.writeFunction("setWebserverConfig", [](boost::optional
<webserveropts_t
> vars
) {
819 if(vars
->count("password")) {
820 const std::string password
= boost::get
<std::string
>(vars
->at("password"));
822 setWebserverPassword(password
);
824 if(vars
->count("apiKey")) {
825 const std::string apiKey
= boost::get
<std::string
>(vars
->at("apiKey"));
827 setWebserverAPIKey(apiKey
);
829 if(vars
->count("customHeaders")) {
830 const boost::optional
<std::map
<std::string
, std::string
> > headers
= boost::get
<std::map
<std::string
, std::string
> >(vars
->at("customHeaders"));
832 setWebserverCustomHeaders(headers
);
836 g_lua
.writeFunction("controlSocket", [client
,configCheck
](const std::string
& str
) {
838 ComboAddress
local(str
, 5199);
840 if(client
|| configCheck
) {
841 g_serverControl
= local
;
845 g_consoleEnabled
= true;
846 #ifdef HAVE_LIBSODIUM
847 if (g_configurationDone
&& g_consoleKey
.empty()) {
848 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");
853 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
854 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
857 auto launch
=[sock
, local
]() {
858 thread
t(controlThread
, sock
, local
);
862 g_launchWork
->push_back(launch
);
867 catch(std::exception
& e
) {
868 g_outputBuffer
="Unable to bind to control socket on " + local
.toStringWithPort() + ": " + e
.what();
869 errlog("Unable to bind to control socket on %s: %s", local
.toStringWithPort(), e
.what());
873 g_lua
.writeFunction("addConsoleACL", [](const std::string
& netmask
) {
875 #ifndef HAVE_LIBSODIUM
876 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
879 g_consoleACL
.modify([netmask
](NetmaskGroup
& nmg
) { nmg
.addMask(netmask
); });
882 g_lua
.writeFunction("setConsoleACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
885 #ifndef HAVE_LIBSODIUM
886 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
890 if(auto str
= boost::get
<string
>(&inp
)) {
893 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
894 nmg
.addMask(p
.second
);
896 g_consoleACL
.setState(nmg
);
899 g_lua
.writeFunction("showConsoleACL", []() {
900 setLuaNoSideEffect();
902 #ifndef HAVE_LIBSODIUM
903 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
907 g_consoleACL
.getLocal()->toStringVector(&vec
);
909 for(const auto& s
: vec
) {
910 g_outputBuffer
+= s
+ "\n";
914 g_lua
.writeFunction("clearQueryCounters", []() {
915 unsigned int size
{0};
917 WriteLock
wl(&g_qcount
.queryLock
);
918 size
= g_qcount
.records
.size();
919 g_qcount
.records
.clear();
922 boost::format
fmt("%d records cleared from query counter buffer\n");
923 g_outputBuffer
= (fmt
% size
).str();
926 g_lua
.writeFunction("getQueryCounters", [](boost::optional
<unsigned int> optMax
) {
927 setLuaNoSideEffect();
928 ReadLock
rl(&g_qcount
.queryLock
);
929 g_outputBuffer
= "query counting is currently: ";
930 g_outputBuffer
+= g_qcount
.enabled
? "enabled" : "disabled";
931 g_outputBuffer
+= (boost::format(" (%d records in buffer)\n") % g_qcount
.records
.size()).str();
933 boost::format
fmt("%-3d %s: %d request(s)\n");
934 QueryCountRecords::iterator it
;
935 unsigned int max
= optMax
? *optMax
: 10;
936 unsigned int index
{1};
937 for(it
= g_qcount
.records
.begin(); it
!= g_qcount
.records
.end() && index
<= max
; ++it
, ++index
) {
938 g_outputBuffer
+= (fmt
% index
% it
->first
% it
->second
).str();
942 g_lua
.writeFunction("setQueryCount", [](bool enabled
) { g_qcount
.enabled
=enabled
; });
944 g_lua
.writeFunction("setQueryCountFilter", [](QueryCountFilter func
) {
945 g_qcount
.filter
= func
;
948 g_lua
.writeFunction("makeKey", []() {
949 setLuaNoSideEffect();
950 g_outputBuffer
="setKey("+newKey()+")\n";
953 g_lua
.writeFunction("setKey", [](const std::string
& key
) {
954 if(!g_configurationDone
&& ! g_consoleKey
.empty()) { // this makes sure the commandline -k key prevails over dnsdist.conf
955 return; // but later setKeys() trump the -k value again
957 #ifndef HAVE_LIBSODIUM
958 warnlog("Calling setKey() while libsodium support has not been enabled is not secure, and will result in cleartext communications");
963 if(B64Decode(key
, newkey
) < 0) {
964 g_outputBuffer
=string("Unable to decode ")+key
+" as Base64";
965 errlog("%s", g_outputBuffer
);
971 g_lua
.writeFunction("testCrypto", [](boost::optional
<string
> optTestMsg
)
973 setLuaNoSideEffect();
974 #ifdef HAVE_LIBSODIUM
979 testmsg
= *optTestMsg
;
982 testmsg
= "testStringForCryptoTests";
988 string encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
989 string decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
994 encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
995 decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
997 if(testmsg
== decrypted
)
998 g_outputBuffer
="Everything is ok!\n";
1000 g_outputBuffer
="Crypto failed.. (the decoded value does not match the cleartext one)\n";
1002 catch(const std::exception
& e
) {
1003 g_outputBuffer
="Crypto failed: "+std::string(e
.what())+"\n";
1006 g_outputBuffer
="Crypto failed..\n";
1009 g_outputBuffer
="Crypto not available.\n";
1013 g_lua
.writeFunction("setTCPRecvTimeout", [](int timeout
) { g_tcpRecvTimeout
=timeout
; });
1015 g_lua
.writeFunction("setTCPSendTimeout", [](int timeout
) { g_tcpSendTimeout
=timeout
; });
1017 g_lua
.writeFunction("setUDPTimeout", [](int timeout
) { g_udpTimeout
=timeout
; });
1019 g_lua
.writeFunction("setMaxUDPOutstanding", [](uint16_t max
) {
1020 if (!g_configurationDone
) {
1021 g_maxOutstanding
= max
;
1023 g_outputBuffer
="Max UDP outstanding cannot be altered at runtime!\n";
1027 g_lua
.writeFunction("setMaxTCPClientThreads", [](uint64_t max
) {
1028 if (!g_configurationDone
) {
1029 g_maxTCPClientThreads
= max
;
1031 g_outputBuffer
="Maximum TCP client threads count cannot be altered at runtime!\n";
1035 g_lua
.writeFunction("setMaxTCPQueuedConnections", [](uint64_t max
) {
1036 if (!g_configurationDone
) {
1037 g_maxTCPQueuedConnections
= max
;
1039 g_outputBuffer
="The maximum number of queued TCP connections cannot be altered at runtime!\n";
1043 g_lua
.writeFunction("setMaxTCPQueriesPerConnection", [](size_t max
) {
1044 if (!g_configurationDone
) {
1045 g_maxTCPQueriesPerConn
= max
;
1047 g_outputBuffer
="The maximum number of queries per TCP connection cannot be altered at runtime!\n";
1051 g_lua
.writeFunction("setMaxTCPConnectionsPerClient", [](size_t max
) {
1052 if (!g_configurationDone
) {
1053 g_maxTCPConnectionsPerClient
= max
;
1055 g_outputBuffer
="The maximum number of TCP connection per client cannot be altered at runtime!\n";
1059 g_lua
.writeFunction("setMaxTCPConnectionDuration", [](size_t max
) {
1060 if (!g_configurationDone
) {
1061 g_maxTCPConnectionDuration
= max
;
1063 g_outputBuffer
="The maximum duration of a TCP connection cannot be altered at runtime!\n";
1067 g_lua
.writeFunction("setCacheCleaningDelay", [](uint32_t delay
) { g_cacheCleaningDelay
= delay
; });
1069 g_lua
.writeFunction("setCacheCleaningPercentage", [](uint16_t percentage
) { if (percentage
< 100) g_cacheCleaningPercentage
= percentage
; else g_cacheCleaningPercentage
= 100; });
1071 g_lua
.writeFunction("setECSSourcePrefixV4", [](uint16_t prefix
) { g_ECSSourcePrefixV4
=prefix
; });
1073 g_lua
.writeFunction("setECSSourcePrefixV6", [](uint16_t prefix
) { g_ECSSourcePrefixV6
=prefix
; });
1075 g_lua
.writeFunction("setECSOverride", [](bool override
) { g_ECSOverride
=override
; });
1077 g_lua
.writeFunction("setPreserveTrailingData", [](bool preserve
) { g_preserveTrailingData
= preserve
; });
1079 g_lua
.writeFunction("showDynBlocks", []() {
1080 setLuaNoSideEffect();
1081 auto slow
= g_dynblockNMG
.getCopy();
1082 struct timespec now
;
1084 boost::format
fmt("%-24s %8d %8d %-10s %-20s %s\n");
1085 g_outputBuffer
= (fmt
% "What" % "Seconds" % "Blocks" % "Warning" % "Action" % "Reason").str();
1086 for(const auto& e
: slow
) {
1087 if(now
< e
.second
.until
)
1088 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();
1090 auto slow2
= g_dynblockSMT
.getCopy();
1091 slow2
.visit([&now
, &fmt
](const SuffixMatchTree
<DynBlock
>& node
) {
1092 if(now
<node
.d_value
.until
) {
1093 string
dom("empty");
1094 if(!node
.d_value
.domain
.empty())
1095 dom
= node
.d_value
.domain
.toString();
1096 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();
1102 g_lua
.writeFunction("clearDynBlocks", []() {
1105 g_dynblockNMG
.setState(nmg
);
1106 SuffixMatchTree
<DynBlock
> smt
;
1107 g_dynblockSMT
.setState(smt
);
1110 g_lua
.writeFunction("addDynBlocks",
1111 [](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
) {
1116 auto slow
= g_dynblockNMG
.getCopy();
1117 struct timespec until
, now
;
1120 int actualSeconds
= seconds
? *seconds
: 10;
1121 until
.tv_sec
+= actualSeconds
;
1122 for(const auto& capair
: m
) {
1123 unsigned int count
= 0;
1124 auto got
= slow
.lookup(Netmask(capair
.first
));
1127 if(until
< got
->second
.until
) // had a longer policy
1129 if(now
< got
->second
.until
) // only inherit count on fresh query we are extending
1130 count
=got
->second
.blocks
;
1134 DynBlock db
{msg
,until
,DNSName(),(action
? *action
: DNSAction::Action::None
)};
1137 warnlog("Inserting dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
);
1138 slow
.insert(Netmask(capair
.first
)).second
=db
;
1140 g_dynblockNMG
.setState(slow
);
1143 g_lua
.writeFunction("addDynBlockSMT",
1144 [](const vector
<pair
<unsigned int, string
> >&names
, const std::string
& msg
, boost::optional
<int> seconds
, boost::optional
<DNSAction::Action
> action
) {
1145 if (names
.empty()) {
1149 auto slow
= g_dynblockSMT
.getCopy();
1150 struct timespec until
, now
;
1153 int actualSeconds
= seconds
? *seconds
: 10;
1154 until
.tv_sec
+= actualSeconds
;
1156 for(const auto& capair
: names
) {
1157 unsigned int count
= 0;
1158 DNSName
domain(capair
.second
);
1159 domain
.makeUsLowerCase();
1160 auto got
= slow
.lookup(domain
);
1163 if(until
< got
->until
) // had a longer policy
1165 if(now
< got
->until
) // only inherit count on fresh query we are extending
1171 DynBlock db
{msg
,until
,domain
,(action
? *action
: DNSAction::Action::None
)};
1174 warnlog("Inserting dynamic block for %s for %d seconds: %s", domain
, actualSeconds
, msg
);
1175 slow
.add(domain
, db
);
1177 g_dynblockSMT
.setState(slow
);
1180 g_lua
.writeFunction("setDynBlocksAction", [](DNSAction::Action action
) {
1181 if (!g_configurationDone
) {
1182 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
) {
1183 g_dynBlockAction
= action
;
1186 errlog("Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!");
1187 g_outputBuffer
="Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!\n";
1190 g_outputBuffer
="Dynamic blocks action cannot be altered at runtime!\n";
1194 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
) {
1195 if (g_configurationDone
) {
1196 g_outputBuffer
="addDNSCryptBind cannot be used at runtime!\n";
1199 #ifdef HAVE_DNSCRYPT
1200 bool reusePort
= false;
1201 int tcpFastOpenQueueSize
= 0;
1202 std::string interface
;
1204 std::vector
<DNSCryptContext::CertKeyPaths
> certKeys
;
1206 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1208 if (certFiles
.type() == typeid(std::string
) && keyFiles
.type() == typeid(std::string
)) {
1209 auto certFile
= boost::get
<std::string
>(certFiles
);
1210 auto keyFile
= boost::get
<std::string
>(keyFiles
);
1211 certKeys
.push_back({certFile
, keyFile
});
1213 else if (certFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>) && keyFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1214 auto certFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(certFiles
);
1215 auto keyFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(keyFiles
);
1216 if (certFilesVect
.size() == keyFilesVect
.size()) {
1217 for (size_t idx
= 0; idx
< certFilesVect
.size(); idx
++) {
1218 certKeys
.push_back({certFilesVect
.at(idx
).second
, keyFilesVect
.at(idx
).second
});
1222 errlog("Error, mismatching number of certificates and keys in call to addDNSCryptBind!");
1223 g_outputBuffer
="Error, mismatching number of certificates and keys in call to addDNSCryptBind()!";
1228 errlog("Error, mismatching number of certificates and keys in call to addDNSCryptBind()!");
1229 g_outputBuffer
="Error, mismatching number of certificates and keys in call to addDNSCryptBind()!";
1234 auto ctx
= std::make_shared
<DNSCryptContext
>(providerName
, certKeys
);
1237 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1238 cs
->dnscryptCtx
= ctx
;
1239 g_dnsCryptLocals
.push_back(ctx
);
1240 g_frontends
.push_back(std::move(cs
));
1243 cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1244 cs
->dnscryptCtx
= ctx
;
1245 g_frontends
.push_back(std::move(cs
));
1247 catch(std::exception
& e
) {
1249 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1252 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1257 g_lua
.writeFunction("showDNSCryptBinds", []() {
1258 setLuaNoSideEffect();
1259 #ifdef HAVE_DNSCRYPT
1261 boost::format
fmt("%1$-3d %2% %|25t|%3$-20.20s");
1262 ret
<< (fmt
% "#" % "Address" % "Provider Name") << endl
;
1265 std::unordered_set
<std::shared_ptr
<DNSCryptContext
>> contexts
;
1266 for (const auto& frontend
: g_frontends
) {
1267 const std::shared_ptr
<DNSCryptContext
> ctx
= frontend
->dnscryptCtx
;
1268 if (!ctx
|| contexts
.count(ctx
) != 0) {
1271 contexts
.insert(ctx
);
1272 ret
<< (fmt
% idx
% frontend
->local
.toStringWithPort() % ctx
->getProviderName()) << endl
;
1276 g_outputBuffer
=ret
.str();
1278 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1282 g_lua
.writeFunction("getDNSCryptBind", [](size_t idx
) {
1283 setLuaNoSideEffect();
1284 #ifdef HAVE_DNSCRYPT
1285 std::shared_ptr
<DNSCryptContext
> ret
= nullptr;
1286 if (idx
< g_dnsCryptLocals
.size()) {
1287 ret
= g_dnsCryptLocals
.at(idx
);
1291 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1295 g_lua
.writeFunction("getDNSCryptBindCount", []() {
1296 setLuaNoSideEffect();
1297 return g_dnsCryptLocals
.size();
1300 g_lua
.writeFunction("generateDNSCryptProviderKeys", [client
](const std::string
& publicKeyFile
, const std::string privateKeyFile
) {
1301 setLuaNoSideEffect();
1302 #ifdef HAVE_DNSCRYPT
1306 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1307 unsigned char privateKey
[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE
];
1308 sodium_mlock(privateKey
, sizeof(privateKey
));
1311 DNSCryptContext::generateProviderKeys(publicKey
, privateKey
);
1313 ofstream
pubKStream(publicKeyFile
);
1314 pubKStream
.write((char*) publicKey
, sizeof(publicKey
));
1317 ofstream
privKStream(privateKeyFile
);
1318 privKStream
.write((char*) privateKey
, sizeof(privateKey
));
1319 privKStream
.close();
1321 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1323 catch(std::exception
& e
) {
1325 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1328 sodium_memzero(privateKey
, sizeof(privateKey
));
1329 sodium_munlock(privateKey
, sizeof(privateKey
));
1331 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1335 g_lua
.writeFunction("printDNSCryptProviderFingerprint", [](const std::string
& publicKeyFile
) {
1336 setLuaNoSideEffect();
1337 #ifdef HAVE_DNSCRYPT
1338 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1341 ifstream
file(publicKeyFile
);
1342 file
.read((char *) &publicKey
, sizeof(publicKey
));
1345 throw std::runtime_error("Invalid dnscrypt provider public key file " + publicKeyFile
);
1348 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1350 catch(std::exception
& e
) {
1352 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1355 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1359 #ifdef HAVE_DNSCRYPT
1360 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
) {
1361 setLuaNoSideEffect();
1365 DNSCryptPrivateKey privateKey
;
1369 if (generateDNSCryptCertificate(providerPrivateKeyFile
, serial
, begin
, end
, version
? *version
: DNSCryptExchangeVersion::VERSION1
, cert
, privateKey
)) {
1370 privateKey
.saveToFile(privateKeyFile
);
1371 DNSCryptContext::saveCertFromFile(cert
, certificateFile
);
1374 catch(const std::exception
& e
) {
1376 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1381 g_lua
.writeFunction("showPools", []() {
1382 setLuaNoSideEffect();
1385 boost::format
fmt("%1$-20.20s %|25t|%2$20s %|25t|%3$20s %|50t|%4%" );
1387 ret
<< (fmt
% "Name" % "Cache" % "ServerPolicy" % "Servers" ) << endl
;
1389 const auto localPools
= g_pools
.getCopy();
1390 for (const auto& entry
: localPools
) {
1391 const string
& name
= entry
.first
;
1392 const std::shared_ptr
<ServerPool
> pool
= entry
.second
;
1393 string cache
= pool
->packetCache
!= nullptr ? pool
->packetCache
->toString() : "";
1394 string policy
= g_policy
.getLocal()->name
;
1395 if (pool
->policy
!= nullptr) {
1396 policy
= pool
->policy
->name
;
1400 for (const auto& server
: pool
->getServers()) {
1401 if (!servers
.empty()) {
1404 if (!server
.second
->getName().empty()) {
1405 servers
+= server
.second
->getName();
1408 servers
+= server
.second
->remote
.toStringWithPort();
1411 ret
<< (fmt
% name
% cache
% policy
% servers
) << endl
;
1413 g_outputBuffer
=ret
.str();
1414 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1417 g_lua
.writeFunction("getPool", [client
](const string
& poolName
) {
1419 return std::make_shared
<ServerPool
>();
1421 auto localPools
= g_pools
.getCopy();
1422 std::shared_ptr
<ServerPool
> pool
= createPoolIfNotExists(localPools
, poolName
);
1423 g_pools
.setState(localPools
);
1427 g_lua
.writeFunction("setVerboseHealthChecks", [](bool verbose
) { g_verboseHealthChecks
=verbose
; });
1428 g_lua
.writeFunction("setStaleCacheEntriesTTL", [](uint32_t ttl
) { g_staleCacheEntriesTTL
= ttl
; });
1430 g_lua
.writeFunction("showBinds", []() {
1431 setLuaNoSideEffect();
1434 boost::format
fmt("%1$-3d %2$-20.20s %|35t|%3$-20.20s %|57t|%4%" );
1436 ret
<< (fmt
% "#" % "Address" % "Protocol" % "Queries" ) << endl
;
1439 for (const auto& front
: g_frontends
) {
1440 ret
<< (fmt
% counter
% front
->local
.toStringWithPort() % front
->getType() % front
->queries
) << endl
;
1443 g_outputBuffer
=ret
.str();
1444 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1447 g_lua
.writeFunction("getBind", [](size_t num
) {
1448 setLuaNoSideEffect();
1449 ClientState
* ret
= nullptr;
1450 if(num
< g_frontends
.size()) {
1451 ret
=g_frontends
[num
].get();
1456 g_lua
.writeFunction("getBindCount", []() {
1457 setLuaNoSideEffect();
1458 return g_frontends
.size();
1461 g_lua
.writeFunction("help", [](boost::optional
<std::string
> command
) {
1462 setLuaNoSideEffect();
1463 g_outputBuffer
= "";
1464 for (const auto& keyword
: g_consoleKeywords
) {
1466 g_outputBuffer
+= keyword
.toString() + "\n";
1468 else if (keyword
.name
== command
) {
1469 g_outputBuffer
= keyword
.toString() + "\n";
1474 g_outputBuffer
= "Nothing found for " + *command
+ "\n";
1478 g_lua
.writeFunction("showVersion", []() {
1479 setLuaNoSideEffect();
1480 g_outputBuffer
= "dnsdist " + std::string(VERSION
) + "\n";
1483 g_lua
.writeFunction("showSecurityStatus", []() {
1484 setLuaNoSideEffect();
1485 g_outputBuffer
= std::to_string(g_stats
.securityStatus
) + "\n";
1489 g_lua
.writeFunction("setDefaultBPFFilter", [](std::shared_ptr
<BPFFilter
> bpf
) {
1490 if (g_configurationDone
) {
1491 g_outputBuffer
="setDefaultBPFFilter() cannot be used at runtime!\n";
1494 g_defaultBPFFilter
= bpf
;
1497 g_lua
.writeFunction("registerDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1499 g_dynBPFFilters
.push_back(dbpf
);
1503 g_lua
.writeFunction("unregisterDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1505 for (auto it
= g_dynBPFFilters
.begin(); it
!= g_dynBPFFilters
.end(); it
++) {
1507 g_dynBPFFilters
.erase(it
);
1514 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
) {
1516 struct timespec until
, now
;
1517 clock_gettime(CLOCK_MONOTONIC
, &now
);
1519 int actualSeconds
= seconds
? *seconds
: 10;
1520 until
.tv_sec
+= actualSeconds
;
1521 for(const auto& capair
: m
) {
1522 if (dynbpf
->block(capair
.first
, until
)) {
1523 warnlog("Inserting eBPF dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
? *msg
: "");
1528 #endif /* HAVE_EBPF */
1530 g_lua
.writeFunction
<std::unordered_map
<string
,uint64_t>()>("getStatisticsCounters", []() {
1531 setLuaNoSideEffect();
1532 std::unordered_map
<string
,uint64_t> res
;
1533 for(const auto& entry
: g_stats
.entries
) {
1534 if(const auto& val
= boost::get
<DNSDistStats::stat_t
*>(&entry
.second
))
1535 res
[entry
.first
] = (*val
)->load();
1540 g_lua
.writeFunction("includeDirectory", [](const std::string
& dirname
) {
1541 if (g_configurationDone
) {
1542 errlog("includeDirectory() cannot be used at runtime!");
1543 g_outputBuffer
="includeDirectory() cannot be used at runtime!\n";
1548 errlog("includeDirectory() cannot be used recursively!");
1549 g_outputBuffer
="includeDirectory() cannot be used recursively!\n";
1555 if (stat(dirname
.c_str(), &st
)) {
1556 errlog("The included directory %s does not exist!", dirname
.c_str());
1557 g_outputBuffer
="The included directory " + dirname
+ " does not exist!";
1561 if (!S_ISDIR(st
.st_mode
)) {
1562 errlog("The included directory %s is not a directory!", dirname
.c_str());
1563 g_outputBuffer
="The included directory " + dirname
+ " is not a directory!";
1569 std::list
<std::string
> files
;
1570 if (!(dirp
= opendir(dirname
.c_str()))) {
1571 errlog("Error opening the included directory %s!", dirname
.c_str());
1572 g_outputBuffer
="Error opening the included directory " + dirname
+ "!";
1576 while((ent
= readdir(dirp
)) != NULL
) {
1577 if (ent
->d_name
[0] == '.') {
1581 if (boost::ends_with(ent
->d_name
, ".conf")) {
1582 std::ostringstream namebuf
;
1583 namebuf
<< dirname
.c_str() << "/" << ent
->d_name
;
1585 if (stat(namebuf
.str().c_str(), &st
) || !S_ISREG(st
.st_mode
)) {
1589 files
.push_back(namebuf
.str());
1596 for (auto file
= files
.begin(); file
!= files
.end(); ++file
) {
1597 std::ifstream
ifs(*file
);
1599 warnlog("Unable to read configuration from '%s'", *file
);
1601 vinfolog("Read configuration from '%s'", *file
);
1604 g_lua
.executeCode(ifs
);
1610 g_lua
.writeFunction("setAPIWritable", [](bool writable
, boost::optional
<std::string
> apiConfigDir
) {
1612 g_apiReadWrite
= writable
;
1614 if (!(*apiConfigDir
).empty()) {
1615 g_apiConfigDirectory
= *apiConfigDir
;
1618 errlog("The API configuration directory value cannot be empty!");
1619 g_outputBuffer
="The API configuration directory value cannot be empty!";
1624 g_lua
.writeFunction("setServFailWhenNoServer", [](bool servfail
) {
1626 g_servFailOnNoPolicy
= servfail
;
1629 g_lua
.writeFunction("setRoundRobinFailOnNoServer", [](bool fail
) {
1631 g_roundrobinFailOnNoServer
= fail
;
1634 g_lua
.writeFunction("setConsistentHashingBalancingFactor", [](double factor
) {
1637 g_consistentHashBalancingFactor
= factor
;
1640 errlog("Invalid value passed to setConsistentHashingBalancingFactor()!");
1641 g_outputBuffer
="Invalid value passed to setConsistentHashingBalancingFactor()!\n";
1646 g_lua
.writeFunction("setRingBuffersSize", [](size_t capacity
, boost::optional
<size_t> numberOfShards
) {
1648 if (g_configurationDone
) {
1649 errlog("setRingBuffersSize() cannot be used at runtime!");
1650 g_outputBuffer
="setRingBuffersSize() cannot be used at runtime!\n";
1653 g_rings
.setCapacity(capacity
, numberOfShards
? *numberOfShards
: 1);
1656 g_lua
.writeFunction("setRingBuffersLockRetries", [](size_t retries
) {
1658 g_rings
.setNumberOfLockRetries(retries
);
1661 g_lua
.writeFunction("setWHashedPertubation", [](uint32_t pertub
) {
1663 g_hashperturb
= pertub
;
1666 g_lua
.writeFunction("setTCPUseSinglePipe", [](bool flag
) {
1667 if (g_configurationDone
) {
1668 g_outputBuffer
="setTCPUseSinglePipe() cannot be used at runtime!\n";
1672 g_useTCPSinglePipe
= flag
;
1675 g_lua
.writeFunction("snmpAgent", [client
,configCheck
](bool enableTraps
, boost::optional
<std::string
> masterSocket
) {
1676 if(client
|| configCheck
)
1678 #ifdef HAVE_NET_SNMP
1679 if (g_configurationDone
) {
1680 errlog("snmpAgent() cannot be used at runtime!");
1681 g_outputBuffer
="snmpAgent() cannot be used at runtime!\n";
1685 if (g_snmpEnabled
) {
1686 errlog("snmpAgent() cannot be used twice!");
1687 g_outputBuffer
="snmpAgent() cannot be used twice!\n";
1691 g_snmpEnabled
= true;
1692 g_snmpTrapsEnabled
= enableTraps
;
1693 g_snmpAgent
= new DNSDistSNMPAgent("dnsdist", masterSocket
? *masterSocket
: std::string());
1695 errlog("NET SNMP support is required to use snmpAgent()");
1696 g_outputBuffer
="NET SNMP support is required to use snmpAgent()\n";
1697 #endif /* HAVE_NET_SNMP */
1700 g_lua
.writeFunction("sendCustomTrap", [](const std::string
& str
) {
1701 if (g_snmpAgent
&& g_snmpTrapsEnabled
) {
1702 g_snmpAgent
->sendCustomTrap(str
);
1706 g_lua
.writeFunction("setServerPolicy", [](ServerPolicy policy
) {
1708 g_policy
.setState(policy
);
1711 g_lua
.writeFunction("setServerPolicyLua", [](string name
, ServerPolicy::policyfunc_t policy
) {
1713 g_policy
.setState(ServerPolicy
{name
, policy
, true});
1716 g_lua
.writeFunction("setServerPolicyLuaFFI", [](string name
, ServerPolicy::ffipolicyfunc_t policy
) {
1718 auto pol
= ServerPolicy(name
, policy
);
1719 g_policy
.setState(std::move(pol
));
1722 g_lua
.writeFunction("showServerPolicy", []() {
1724 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1727 g_lua
.writeFunction("setPoolServerPolicy", [](ServerPolicy policy
, string pool
) {
1729 auto localPools
= g_pools
.getCopy();
1730 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(policy
));
1731 g_pools
.setState(localPools
);
1734 g_lua
.writeFunction("setPoolServerPolicyLua", [](string name
, ServerPolicy::policyfunc_t policy
, string pool
) {
1736 auto localPools
= g_pools
.getCopy();
1737 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(ServerPolicy
{name
, policy
, true}));
1738 g_pools
.setState(localPools
);
1741 g_lua
.writeFunction("showPoolServerPolicy", [](string pool
) {
1743 auto localPools
= g_pools
.getCopy();
1744 auto poolObj
= getPool(localPools
, pool
);
1745 if (poolObj
->policy
== nullptr) {
1746 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1748 g_outputBuffer
=poolObj
->policy
->name
+"\n";
1752 g_lua
.writeFunction("setTCPDownstreamCleanupInterval", [](uint16_t interval
) {
1754 g_downstreamTCPCleanupInterval
= interval
;
1757 g_lua
.writeFunction("setConsoleConnectionsLogging", [](bool enabled
) {
1758 g_logConsoleConnections
= enabled
;
1761 g_lua
.writeFunction("setConsoleOutputMaxMsgSize", [](uint32_t size
) {
1762 g_consoleOutputMsgMaxSize
= size
;
1765 g_lua
.writeFunction("setUDPMultipleMessagesVectorSize", [](size_t vSize
) {
1766 if (g_configurationDone
) {
1767 errlog("setUDPMultipleMessagesVectorSize() cannot be used at runtime!");
1768 g_outputBuffer
="setUDPMultipleMessagesVectorSize() cannot be used at runtime!\n";
1771 #if defined(HAVE_RECVMMSG) && defined(HAVE_SENDMMSG) && defined(MSG_WAITFORONE)
1773 g_udpVectorSize
= vSize
;
1775 errlog("recvmmsg() support is not available!");
1776 g_outputBuffer
="recvmmsg support is not available!\n";
1780 g_lua
.writeFunction("setAddEDNSToSelfGeneratedResponses", [](bool add
) {
1781 g_addEDNSToSelfGeneratedResponses
= add
;
1784 g_lua
.writeFunction("setPayloadSizeOnSelfGeneratedAnswers", [](uint16_t payloadSize
) {
1785 if (payloadSize
< 512) {
1786 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!");
1787 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!";
1790 if (payloadSize
> s_udpIncomingBufferSize
) {
1791 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to %d instead!", s_udpIncomingBufferSize
);
1792 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to " + std::to_string(s_udpIncomingBufferSize
) + " instead";
1793 payloadSize
= s_udpIncomingBufferSize
;
1795 g_PayloadSizeSelfGenAnswers
= payloadSize
;
1798 g_lua
.writeFunction("setSecurityPollSuffix", [](const std::string
& suffix
) {
1799 if (g_configurationDone
) {
1800 g_outputBuffer
="setSecurityPollSuffix() cannot be used at runtime!\n";
1804 g_secPollSuffix
= suffix
;
1807 g_lua
.writeFunction("setSecurityPollInterval", [](time_t newInterval
) {
1808 if (newInterval
<= 0) {
1809 warnlog("setSecurityPollInterval() should be > 0, skipping");
1810 g_outputBuffer
="setSecurityPollInterval() should be > 0, skipping";
1813 g_secPollInterval
= newInterval
;
1816 g_lua
.writeFunction("setSyslogFacility", [](int facility
) {
1818 if (g_configurationDone
) {
1819 g_outputBuffer
="setSyslogFacility cannot be used at runtime!\n";
1822 setSyslogFacility(facility
);
1825 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
) {
1826 #ifdef HAVE_DNS_OVER_HTTPS
1831 if (g_configurationDone
) {
1832 g_outputBuffer
="addDOHLocal cannot be used at runtime!\n";
1835 auto frontend
= std::make_shared
<DOHFrontend
>();
1837 if (certFiles
&& !certFiles
->empty() && keyFiles
&& !keyFiles
->empty()) {
1838 if (!loadTLSCertificateAndKeys("addDOHLocal", frontend
->d_tlsConfig
.d_certKeyPairs
, *certFiles
, *keyFiles
)) {
1842 frontend
->d_local
= ComboAddress(addr
, 443);
1845 frontend
->d_local
= ComboAddress(addr
, 80);
1846 infolog("No certificate provided for DoH endpoint %s, running in DNS over HTTP mode instead of DNS over HTTPS", frontend
->d_local
.toStringWithPort());
1850 if (urls
->type() == typeid(std::string
)) {
1851 frontend
->d_urls
.push_back(boost::get
<std::string
>(*urls
));
1853 else if (urls
->type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1854 auto urlsVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(*urls
);
1855 for(const auto& p
: urlsVect
) {
1856 frontend
->d_urls
.push_back(p
.second
);
1861 frontend
->d_urls
= {"/"};
1864 bool reusePort
= false;
1865 int tcpFastOpenQueueSize
= 0;
1866 std::string interface
;
1870 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1872 if (vars
->count("idleTimeout")) {
1873 frontend
->d_idleTimeout
= boost::get
<int>((*vars
)["idleTimeout"]);
1876 if (vars
->count("serverTokens")) {
1877 frontend
->d_serverTokens
= boost::get
<const string
>((*vars
)["serverTokens"]);
1880 if (vars
->count("customResponseHeaders")) {
1881 for (auto const& headerMap
: boost::get
<std::map
<std::string
,std::string
>>((*vars
)["customResponseHeaders"])) {
1882 std::pair
<std::string
,std::string
> headerResponse
= std::make_pair(boost::to_lower_copy(headerMap
.first
), headerMap
.second
);
1883 frontend
->d_customResponseHeaders
.push_back(headerResponse
);
1887 if (vars
->count("sendCacheControlHeaders")) {
1888 frontend
->d_sendCacheControlHeaders
= boost::get
<bool>((*vars
)["sendCacheControlHeaders"]);
1891 parseTLSConfig(frontend
->d_tlsConfig
, "addDOHLocal", vars
);
1893 g_dohlocals
.push_back(frontend
);
1894 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_local
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1895 cs
->dohFrontend
= frontend
;
1896 g_frontends
.push_back(std::move(cs
));
1898 throw std::runtime_error("addDOHLocal() called but DNS over HTTPS support is not present!");
1902 g_lua
.writeFunction("showDOHFrontends", []() {
1903 #ifdef HAVE_DNS_OVER_HTTPS
1904 setLuaNoSideEffect();
1907 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d");
1908 ret
<< (fmt
% "#" % "Address" % "HTTP" % "HTTP/1" % "HTTP/2" % "GET" % "POST" % "Bad" % "Errors" % "Redirects" % "Valid" % "# ticket keys" % "Rotation delay" % "Next rotation") << endl
;
1910 for (const auto& ctx
: g_dohlocals
) {
1911 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
;
1914 g_outputBuffer
= ret
.str();
1916 catch(const std::exception
& e
) {
1917 g_outputBuffer
= e
.what();
1921 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1925 g_lua
.writeFunction("showDOHResponseCodes", []() {
1926 #ifdef HAVE_DNS_OVER_HTTPS
1927 setLuaNoSideEffect();
1930 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d");
1931 g_outputBuffer
= "\n- HTTP/1:\n\n";
1932 ret
<< (fmt
% "#" % "Address" % "200" % "400" % "403" % "500" % "502" % "Others" ) << endl
;
1934 for (const auto& ctx
: g_dohlocals
) {
1935 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
;
1938 g_outputBuffer
+= ret
.str();
1941 g_outputBuffer
+= "\n- HTTP/2:\n\n";
1942 ret
<< (fmt
% "#" % "Address" % "200" % "400" % "403" % "500" % "502" % "Others" ) << endl
;
1944 for (const auto& ctx
: g_dohlocals
) {
1945 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
;
1948 g_outputBuffer
+= ret
.str();
1950 catch(const std::exception
& e
) {
1951 g_outputBuffer
= e
.what();
1955 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1959 g_lua
.writeFunction("getDOHFrontend", [client
](size_t index
) {
1960 std::shared_ptr
<DOHFrontend
> result
= nullptr;
1964 #ifdef HAVE_DNS_OVER_HTTPS
1965 setLuaNoSideEffect();
1967 if (index
< g_dohlocals
.size()) {
1968 result
= g_dohlocals
.at(index
);
1971 errlog("Error: trying to get DOH frontend with index %zu but we only have %zu frontend(s)\n", index
, g_dohlocals
.size());
1972 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";
1975 catch(const std::exception
& e
) {
1976 g_outputBuffer
="Error while trying to get DOH frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
1977 errlog("Error while trying to get DOH frontend with index %zu: %s\n", index
, string(e
.what()));
1980 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1985 g_lua
.writeFunction("getDOHFrontendCount", []() {
1986 setLuaNoSideEffect();
1987 return g_dohlocals
.size();
1990 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("reloadCertificates", [](std::shared_ptr
<DOHFrontend
> frontend
) {
1991 if (frontend
!= nullptr) {
1992 frontend
->reloadCertificates();
1996 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<DOHFrontend
> frontend
) {
1997 if (frontend
!= nullptr) {
1998 frontend
->rotateTicketsKey(time(nullptr));
2002 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<DOHFrontend
> frontend
, const std::string
& file
) {
2003 if (frontend
!= nullptr) {
2004 frontend
->loadTicketsKeys(file
);
2008 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
) {
2009 if (frontend
!= nullptr) {
2010 std::vector
<std::shared_ptr
<DOHResponseMapEntry
>> newMap
;
2011 newMap
.reserve(map
.size());
2013 for (const auto& entry
: map
) {
2014 newMap
.push_back(entry
.second
);
2017 frontend
->d_responsesMap
= std::move(newMap
);
2021 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
) {
2022 #ifdef HAVE_DNS_OVER_TLS
2026 if (g_configurationDone
) {
2027 g_outputBuffer
="addTLSLocal cannot be used at runtime!\n";
2030 shared_ptr
<TLSFrontend
> frontend
= std::make_shared
<TLSFrontend
>();
2032 if (!loadTLSCertificateAndKeys("addTLSLocal", frontend
->d_tlsConfig
.d_certKeyPairs
, certFiles
, keyFiles
)) {
2036 bool reusePort
= false;
2037 int tcpFastOpenQueueSize
= 0;
2038 std::string interface
;
2042 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
2044 if (vars
->count("provider")) {
2045 frontend
->d_provider
= boost::get
<const string
>((*vars
)["provider"]);
2046 boost::algorithm::to_lower(frontend
->d_provider
);
2049 parseTLSConfig(frontend
->d_tlsConfig
, "addTLSLocal", vars
);
2053 frontend
->d_addr
= ComboAddress(addr
, 853);
2054 if (!frontend
->d_provider
.empty()) {
2055 vinfolog("Loading TLS provider '%s'", frontend
->d_provider
);
2059 vinfolog("Loading default TLS provider 'openssl'");
2061 vinfolog("Loading default TLS provider 'gnutls'");
2064 // only works pre-startup, so no sync necessary
2065 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_addr
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
2066 cs
->tlsFrontend
= frontend
;
2067 g_tlslocals
.push_back(cs
->tlsFrontend
);
2068 g_frontends
.push_back(std::move(cs
));
2070 catch(const std::exception
& e
) {
2071 g_outputBuffer
="Error: "+string(e
.what())+"\n";
2074 throw std::runtime_error("addTLSLocal() called but DNS over TLS support is not present!");
2078 g_lua
.writeFunction("showTLSContexts", []() {
2079 #ifdef HAVE_DNS_OVER_TLS
2080 setLuaNoSideEffect();
2083 boost::format
fmt("%1$-3d %2$-20.20s %|25t|%3$-14d %|40t|%4$-14d %|54t|%5$-21.21s");
2085 ret
<< (fmt
% "#" % "Address" % "# ticket keys" % "Rotation delay" % "Next rotation" ) << endl
;
2087 for (const auto& ctx
: g_tlslocals
) {
2088 ret
<< (fmt
% counter
% ctx
->d_addr
.toStringWithPort() % ctx
->getTicketsKeysCount() % ctx
->getTicketsKeyRotationDelay() % ctx
->getNextTicketsKeyRotation()) << endl
;
2091 g_outputBuffer
= ret
.str();
2093 catch(const std::exception
& e
) {
2094 g_outputBuffer
= e
.what();
2098 g_outputBuffer
="DNS over TLS support is not present!\n";
2102 g_lua
.writeFunction("getTLSContext", [](size_t index
) {
2103 std::shared_ptr
<TLSCtx
> result
= nullptr;
2104 #ifdef HAVE_DNS_OVER_TLS
2105 setLuaNoSideEffect();
2107 if (index
< g_tlslocals
.size()) {
2108 result
= g_tlslocals
.at(index
)->getContext();
2111 errlog("Error: trying to get TLS context with index %zu but we only have %zu context(s)\n", index
, g_tlslocals
.size());
2112 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";
2115 catch(const std::exception
& e
) {
2116 g_outputBuffer
="Error while trying to get TLS context with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
2117 errlog("Error while trying to get TLS context with index %zu: %s\n", index
, string(e
.what()));
2120 g_outputBuffer
="DNS over TLS support is not present!\n";
2125 g_lua
.writeFunction("getTLSFrontend", [](size_t index
) {
2126 std::shared_ptr
<TLSFrontend
> result
= nullptr;
2127 #ifdef HAVE_DNS_OVER_TLS
2128 setLuaNoSideEffect();
2130 if (index
< g_tlslocals
.size()) {
2131 result
= g_tlslocals
.at(index
);
2134 errlog("Error: trying to get TLS frontend with index %zu but we only have %zu frontends\n", index
, g_tlslocals
.size());
2135 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";
2138 catch(const std::exception
& e
) {
2139 g_outputBuffer
="Error while trying to get TLS frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
2140 errlog("Error while trying to get TLS frontend with index %zu: %s\n", index
, string(e
.what()));
2143 g_outputBuffer
="DNS over TLS support is not present!\n";
2148 g_lua
.writeFunction("getTLSFrontendCount", []() {
2149 setLuaNoSideEffect();
2150 return g_tlslocals
.size();
2153 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<TLSCtx
> ctx
) {
2154 if (ctx
!= nullptr) {
2155 ctx
->rotateTicketsKey(time(nullptr));
2159 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<TLSCtx
> ctx
, const std::string
& file
) {
2160 if (ctx
!= nullptr) {
2161 ctx
->loadTicketsKeys(file
);
2165 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
) {
2166 #ifdef HAVE_DNS_OVER_TLS
2167 if (loadTLSCertificateAndKeys("loadNewCertificatesAndKeys", frontend
->d_tlsConfig
.d_certKeyPairs
, certFiles
, keyFiles
)) {
2168 frontend
->setupTLS();
2173 g_lua
.writeFunction("reloadAllCertificates", []() {
2174 for (auto& frontend
: g_frontends
) {
2179 #ifdef HAVE_DNSCRYPT
2180 if (frontend
->dnscryptCtx
) {
2181 frontend
->dnscryptCtx
->reloadCertificates();
2183 #endif /* HAVE_DNSCRYPT */
2184 #ifdef HAVE_DNS_OVER_TLS
2185 if (frontend
->tlsFrontend
) {
2186 frontend
->tlsFrontend
->setupTLS();
2188 #endif /* HAVE_DNS_OVER_TLS */
2189 #ifdef HAVE_DNS_OVER_HTTPS
2190 if (frontend
->dohFrontend
) {
2191 frontend
->dohFrontend
->reloadCertificates();
2193 #endif /* HAVE_DNS_OVER_HTTPS */
2195 catch(const std::exception
& e
) {
2196 errlog("Error reloading certificates for frontend %s: %s", frontend
->local
.toStringWithPort(), e
.what());
2201 g_lua
.writeFunction("setAllowEmptyResponse", [](bool allow
) { g_allowEmptyResponse
=allow
; });
2203 #if defined(HAVE_LIBSSL) && defined(HAVE_OCSP_BASIC_SIGN)
2204 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
) {
2209 libssl_generate_ocsp_response(certFile
, caCert
, caKey
, outFile
, ndays
, nmin
);
2211 #endif /* HAVE_LIBSSL && HAVE_OCSP_BASIC_SIGN*/
2214 vector
<std::function
<void(void)>> setupLua(bool client
, bool configCheck
, const std::string
& config
)
2216 g_launchWork
= new vector
<std::function
<void(void)>>();
2219 setupLuaConfig(client
, configCheck
);
2220 setupLuaBindings(client
);
2221 setupLuaBindingsDNSCrypt();
2222 setupLuaBindingsDNSQuestion();
2223 setupLuaBindingsKVS(client
);
2224 setupLuaBindingsPacketCache();
2225 setupLuaBindingsProtoBuf(client
, configCheck
);
2226 setupLuaInspection();
2230 #ifdef LUAJIT_VERSION
2231 g_lua
.executeCode(getLuaFFIWrappers());
2234 std::ifstream
ifs(config
);
2236 warnlog("Unable to read configuration from '%s'", config
);
2238 vinfolog("Read configuration from '%s'", config
);
2240 g_lua
.executeCode(ifs
);
2242 auto ret
= *g_launchWork
;
2243 delete g_launchWork
;
2244 g_launchWork
= nullptr;