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-lua.hh"
38 #include "dnsdist-rings.hh"
39 #include "dnsdist-secpoll.hh"
42 #include "dnswriter.hh"
45 #include "protobuf.hh"
46 #include "sodcrypto.hh"
48 #include <boost/logic/tribool.hpp>
49 #include <boost/lexical_cast.hpp>
52 #include <systemd/sd-daemon.h>
57 static vector
<std::function
<void(void)>>* g_launchWork
= nullptr;
59 boost::tribool g_noLuaSideEffect
;
60 static bool g_included
{false};
62 /* this is a best effort way to prevent logging calls with no side-effects in the output of delta()
63 Functions can declare setLuaNoSideEffect() and if nothing else does declare a side effect, or nothing
64 has done so before on this invocation, this call won't be part of delta() output */
65 void setLuaNoSideEffect()
67 if(g_noLuaSideEffect
==false) // there has been a side effect already
69 g_noLuaSideEffect
=true;
72 void setLuaSideEffect()
74 g_noLuaSideEffect
=false;
77 bool getLuaNoSideEffect()
79 if (g_noLuaSideEffect
) {
85 void resetLuaSideEffect()
87 g_noLuaSideEffect
= boost::logic::indeterminate
;
90 typedef std::unordered_map
<std::string
, boost::variant
<bool, int, std::string
, std::vector
<std::pair
<int,int> > > > localbind_t
;
92 static void parseLocalBindVars(boost::optional
<localbind_t
> vars
, bool& reusePort
, int& tcpFastOpenQueueSize
, std::string
& interface
, std::set
<int>& cpus
)
95 if (vars
->count("reusePort")) {
96 reusePort
= boost::get
<bool>((*vars
)["reusePort"]);
98 if (vars
->count("tcpFastOpenQueueSize")) {
99 tcpFastOpenQueueSize
= boost::get
<int>((*vars
)["tcpFastOpenQueueSize"]);
101 if (vars
->count("interface")) {
102 interface
= boost::get
<std::string
>((*vars
)["interface"]);
104 if (vars
->count("cpus")) {
105 for (const auto cpu
: boost::get
<std::vector
<std::pair
<int,int>>>((*vars
)["cpus"])) {
106 cpus
.insert(cpu
.second
);
112 #if defined(HAVE_DNS_OVER_TLS) || defined(HAVE_DNS_OVER_HTTPS)
113 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
)
115 if (certFiles
.type() == typeid(std::string
) && keyFiles
.type() == typeid(std::string
)) {
116 auto certFile
= boost::get
<std::string
>(certFiles
);
117 auto keyFile
= boost::get
<std::string
>(keyFiles
);
119 pairs
.push_back({certFile
, keyFile
});
121 else if (certFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>) && keyFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>))
123 auto certFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(certFiles
);
124 auto keyFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(keyFiles
);
125 if (certFilesVect
.size() == keyFilesVect
.size()) {
127 for (size_t idx
= 0; idx
< certFilesVect
.size(); idx
++) {
128 pairs
.push_back({certFilesVect
.at(idx
).second
, keyFilesVect
.at(idx
).second
});
132 errlog("Error, mismatching number of certificates and keys in call to %s()!", context
);
133 g_outputBuffer
="Error, mismatching number of certificates and keys in call to " + context
+ "()!";
138 errlog("Error, mismatching number of certificates and keys in call to %s()!", context
);
139 g_outputBuffer
="Error, mismatching number of certificates and keys in call to " + context
+ "()!";
145 #endif // defined(HAVE_DNS_OVER_TLS) || defined(HAVE_DNS_OVER_HTTPS)
147 void setupLuaConfig(bool client
)
149 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
, vector
<pair
<int, std::string
> >, DownstreamState::checkfunc_t
> > newserver_t
;
150 g_lua
.writeFunction("inClientStartup", [client
]() {
151 return client
&& !g_configurationDone
;
154 g_lua
.writeFunction("newServer",
155 [client
](boost::variant
<string
,newserver_t
> pvars
, boost::optional
<int> qps
) {
158 std::shared_ptr
<DownstreamState
> ret
= std::make_shared
<DownstreamState
>(ComboAddress());
161 ComboAddress serverAddr
;
162 std::string serverAddressStr
;
163 if(auto addrStr
= boost::get
<string
>(&pvars
)) {
164 serverAddressStr
= *addrStr
;
166 vars
["qps"] = std::to_string(*qps
);
169 vars
= boost::get
<newserver_t
>(pvars
);
170 serverAddressStr
= boost::get
<string
>(vars
["address"]);
174 serverAddr
= ComboAddress(serverAddressStr
, 53);
176 catch(const PDNSException
& e
) {
177 g_outputBuffer
="Error creating new server: "+string(e
.reason
);
178 errlog("Error creating new server with address %s: %s", serverAddressStr
, e
.reason
);
181 catch(std::exception
& e
) {
182 g_outputBuffer
="Error creating new server: "+string(e
.what());
183 errlog("Error creating new server with address %s: %s", serverAddressStr
, e
.what());
187 if(IsAnyAddress(serverAddr
)) {
188 g_outputBuffer
="Error creating new server: invalid address for a downstream server.";
189 errlog("Error creating new server: %s is not a valid address for a downstream server", serverAddressStr
);
193 ComboAddress sourceAddr
;
194 unsigned int sourceItf
= 0;
195 size_t numberOfSockets
= 1;
198 if(vars
.count("source")) {
199 /* handle source in the following forms:
200 - v4 address ("192.0.2.1")
201 - v6 address ("2001:DB8::1")
202 - interface name ("eth0")
203 - v4 address and interface name ("192.0.2.1@eth0")
204 - v6 address and interface name ("2001:DB8::1@eth0")
206 const string source
= boost::get
<string
>(vars
["source"]);
208 std::string::size_type pos
= source
.find("@");
209 if (pos
== std::string::npos
) {
210 /* no '@', try to parse that as a valid v4/v6 address */
212 sourceAddr
= ComboAddress(source
);
222 /* try to parse as interface name, or v4/v6@itf */
223 string itfName
= source
.substr(pos
== std::string::npos
? 0 : pos
+ 1);
224 unsigned int itfIdx
= if_nametoindex(itfName
.c_str());
227 if (pos
== 0 || pos
== std::string::npos
) {
228 /* "eth0" or "@eth0" */
232 /* "192.0.2.1@eth0" */
233 sourceAddr
= ComboAddress(source
.substr(0, pos
));
239 warnlog("Dismissing source %s because '%s' is not a valid interface name", source
, itfName
);
244 if (vars
.count("sockets")) {
245 numberOfSockets
= std::stoul(boost::get
<string
>(vars
["sockets"]));
246 if (numberOfSockets
== 0) {
247 warnlog("Dismissing invalid number of sockets '%s', using 1 instead", boost::get
<string
>(vars
["sockets"]));
253 // do not construct DownstreamState now, it would try binding sockets.
256 ret
=std::make_shared
<DownstreamState
>(serverAddr
, sourceAddr
, sourceItf
, numberOfSockets
);
258 if(vars
.count("qps")) {
259 int qpsVal
=std::stoi(boost::get
<string
>(vars
["qps"]));
260 ret
->qps
=QPSLimiter(qpsVal
, qpsVal
);
263 if(vars
.count("order")) {
264 ret
->order
=std::stoi(boost::get
<string
>(vars
["order"]));
267 if(vars
.count("weight")) {
269 int weightVal
=std::stoi(boost::get
<string
>(vars
["weight"]));
272 errlog("Error creating new server: downstream weight value must be greater than 0.");
276 ret
->setWeight(weightVal
);
278 catch(std::exception
& e
) {
279 // std::stoi will throw an exception if the string isn't in a value int range
280 errlog("Error creating new server: downstream weight value must be between %s and %s", 1, std::numeric_limits
<int>::max());
285 if(vars
.count("retries")) {
286 ret
->retries
=std::stoi(boost::get
<string
>(vars
["retries"]));
289 if(vars
.count("checkInterval")) {
290 ret
->checkInterval
=static_cast<unsigned int>(std::stoul(boost::get
<string
>(vars
["checkInterval"])));
293 if(vars
.count("tcpConnectTimeout")) {
294 ret
->tcpConnectTimeout
=std::stoi(boost::get
<string
>(vars
["tcpConnectTimeout"]));
297 if(vars
.count("tcpSendTimeout")) {
298 ret
->tcpSendTimeout
=std::stoi(boost::get
<string
>(vars
["tcpSendTimeout"]));
301 if(vars
.count("tcpRecvTimeout")) {
302 ret
->tcpRecvTimeout
=std::stoi(boost::get
<string
>(vars
["tcpRecvTimeout"]));
305 if(vars
.count("tcpFastOpen")) {
306 bool fastOpen
= boost::get
<bool>(vars
["tcpFastOpen"]);
309 ret
->tcpFastOpen
=true;
311 warnlog("TCP Fast Open has been configured on downstream server %s but is not supported", boost::get
<string
>(vars
["address"]));
316 if(vars
.count("name")) {
317 ret
->name
=boost::get
<string
>(vars
["name"]);
320 if (vars
.count("id")) {
321 ret
->setId(boost::lexical_cast
<boost::uuids::uuid
>(boost::get
<string
>(vars
["id"])));
324 if(vars
.count("checkName")) {
325 ret
->checkName
=DNSName(boost::get
<string
>(vars
["checkName"]));
328 if(vars
.count("checkType")) {
329 ret
->checkType
=boost::get
<string
>(vars
["checkType"]);
332 if(vars
.count("checkClass")) {
333 ret
->checkClass
=std::stoi(boost::get
<string
>(vars
["checkClass"]));
336 if(vars
.count("checkFunction")) {
337 ret
->checkFunction
= boost::get
<DownstreamState::checkfunc_t
>(vars
["checkFunction"]);
340 if(vars
.count("checkTimeout")) {
341 ret
->checkTimeout
= std::stoi(boost::get
<string
>(vars
["checkTimeout"]));
344 if(vars
.count("setCD")) {
345 ret
->setCD
=boost::get
<bool>(vars
["setCD"]);
348 if(vars
.count("mustResolve")) {
349 ret
->mustResolve
=boost::get
<bool>(vars
["mustResolve"]);
352 if(vars
.count("useClientSubnet")) {
353 ret
->useECS
=boost::get
<bool>(vars
["useClientSubnet"]);
356 if(vars
.count("disableZeroScope")) {
357 ret
->disableZeroScope
=boost::get
<bool>(vars
["disableZeroScope"]);
360 if(vars
.count("ipBindAddrNoPort")) {
361 ret
->ipBindAddrNoPort
=boost::get
<bool>(vars
["ipBindAddrNoPort"]);
364 if(vars
.count("addXPF")) {
365 ret
->xpfRRCode
=std::stoi(boost::get
<string
>(vars
["addXPF"]));
368 if(vars
.count("maxCheckFailures")) {
369 ret
->maxCheckFailures
=std::stoi(boost::get
<string
>(vars
["maxCheckFailures"]));
372 if(vars
.count("rise")) {
373 ret
->minRiseSuccesses
=std::stoi(boost::get
<string
>(vars
["rise"]));
376 if(vars
.count("cpus")) {
377 for (const auto cpu
: boost::get
<vector
<pair
<int,string
>>>(vars
["cpus"])) {
378 cpus
.insert(std::stoi(cpu
.second
));
382 /* this needs to be done _AFTER_ the order has been set,
383 since the server are kept ordered inside the pool */
384 auto localPools
= g_pools
.getCopy();
385 if(vars
.count("pool")) {
386 if(auto* pool
= boost::get
<string
>(&vars
["pool"])) {
387 ret
->pools
.insert(*pool
);
390 auto pools
= boost::get
<vector
<pair
<int, string
> > >(vars
["pool"]);
391 for(auto& p
: pools
) {
392 ret
->pools
.insert(p
.second
);
395 for(const auto& poolName
: ret
->pools
) {
396 addServerToPool(localPools
, poolName
, ret
);
400 addServerToPool(localPools
, "", ret
);
402 g_pools
.setState(localPools
);
404 if (ret
->connected
) {
405 ret
->threadStarted
.test_and_set();
408 g_launchWork
->push_back([ret
,cpus
]() {
409 ret
->tid
= thread(responderThread
, ret
);
411 mapThreadToCPUList(ret
->tid
.native_handle(), cpus
);
416 ret
->tid
= thread(responderThread
, ret
);
418 mapThreadToCPUList(ret
->tid
.native_handle(), cpus
);
423 auto states
= g_dstates
.getCopy();
424 states
.push_back(ret
);
425 std::stable_sort(states
.begin(), states
.end(), [](const decltype(ret
)& a
, const decltype(ret
)& b
) {
426 return a
->order
< b
->order
;
428 g_dstates
.setState(states
);
432 g_lua
.writeFunction("rmServer",
433 [](boost::variant
<std::shared_ptr
<DownstreamState
>, int> var
)
436 shared_ptr
<DownstreamState
> server
;
437 auto* rem
= boost::get
<shared_ptr
<DownstreamState
>>(&var
);
438 auto states
= g_dstates
.getCopy();
443 int idx
= boost::get
<int>(var
);
444 server
= states
.at(idx
);
446 auto localPools
= g_pools
.getCopy();
447 for (const string
& poolName
: server
->pools
) {
448 removeServerFromPool(localPools
, poolName
, server
);
450 /* the server might also be in the default pool */
451 removeServerFromPool(localPools
, "", server
);
452 g_pools
.setState(localPools
);
453 states
.erase(remove(states
.begin(), states
.end(), server
), states
.end());
454 g_dstates
.setState(states
);
457 g_lua
.writeFunction("setServerPolicy", [](ServerPolicy policy
) {
459 g_policy
.setState(policy
);
461 g_lua
.writeFunction("setServerPolicyLua", [](string name
, policyfunc_t policy
) {
463 g_policy
.setState(ServerPolicy
{name
, policy
, true});
466 g_lua
.writeFunction("showServerPolicy", []() {
468 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
471 g_lua
.writeFunction("truncateTC", [](bool tc
) { setLuaSideEffect(); g_truncateTC
=tc
; });
472 g_lua
.writeFunction("fixupCase", [](bool fu
) { setLuaSideEffect(); g_fixupCase
=fu
; });
474 g_lua
.writeFunction("addACL", [](const std::string
& domain
) {
476 g_ACL
.modify([domain
](NetmaskGroup
& nmg
) { nmg
.addMask(domain
); });
479 g_lua
.writeFunction("setLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
483 if (g_configurationDone
) {
484 g_outputBuffer
="setLocal cannot be used at runtime!\n";
487 bool reusePort
= false;
488 int tcpFastOpenQueueSize
= 0;
489 std::string interface
;
492 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
495 ComboAddress
loc(addr
, 53);
496 for (auto it
= g_frontends
.begin(); it
!= g_frontends
.end(); ) {
497 /* TLS and DNSCrypt frontends are separate */
498 if ((*it
)->tlsFrontend
== nullptr && (*it
)->dnscryptCtx
== nullptr) {
499 it
= g_frontends
.erase(it
);
506 // only works pre-startup, so no sync necessary
507 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
508 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
510 catch(const std::exception
& e
) {
511 g_outputBuffer
="Error: "+string(e
.what())+"\n";
515 g_lua
.writeFunction("addLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
519 if (g_configurationDone
) {
520 g_outputBuffer
="addLocal cannot be used at runtime!\n";
523 bool reusePort
= false;
524 int tcpFastOpenQueueSize
= 0;
525 std::string interface
;
528 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
531 ComboAddress
loc(addr
, 53);
532 // only works pre-startup, so no sync necessary
533 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
534 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
536 catch(std::exception
& e
) {
537 g_outputBuffer
="Error: "+string(e
.what())+"\n";
538 errlog("Error while trying to listen on %s: %s\n", addr
, string(e
.what()));
542 g_lua
.writeFunction("setACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
545 if(auto str
= boost::get
<string
>(&inp
)) {
548 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
549 nmg
.addMask(p
.second
);
554 g_lua
.writeFunction("showACL", []() {
555 setLuaNoSideEffect();
558 g_ACL
.getLocal()->toStringVector(&vec
);
560 for(const auto& s
: vec
)
561 g_outputBuffer
+=s
+"\n";
565 g_lua
.writeFunction("shutdown", []() {
567 sd_notify(0, "STOPPING=1");
568 #endif /* HAVE_SYSTEMD */
570 // Useful for debugging leaks, but might lead to race under load
571 // since other threads are still runing.
572 for(auto& frontend
: g_tlslocals
) {
577 google::protobuf::ShutdownProtobufLibrary();
578 #endif /* HAVE_PROTOBUF */
583 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
> > showserversopts_t
;
585 g_lua
.writeFunction("showServers", [](boost::optional
<showserversopts_t
> vars
) {
586 setLuaNoSideEffect();
587 bool showUUIDs
= false;
589 if (vars
->count("showUUIDs")) {
590 showUUIDs
= boost::get
<bool>((*vars
)["showUUIDs"]);
597 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$11d %14%" );
598 // 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
599 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools" % "UUID") << endl
;
601 fmt
= boost::format("%1$-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%" );
602 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools") << endl
;
605 uint64_t totQPS
{0}, totQueries
{0}, totDrops
{0};
607 auto states
= g_dstates
.getLocal();
608 for(const auto& s
: *states
) {
609 string status
= s
->getStatus();
611 for(auto& p
: s
->pools
) {
617 ret
<< (fmt
% counter
% s
->name
% s
->remote
.toStringWithPort() %
619 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
;
621 ret
<< (fmt
% counter
% s
->name
% s
->remote
.toStringWithPort() %
623 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
;
625 totQPS
+= s
->queryLoad
;
626 totQueries
+= s
->queries
.load();
627 totDrops
+= s
->reuseds
.load();
631 ret
<< (fmt
% "All" % "" % "" % ""
633 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" % "" ) << endl
;
635 ret
<< (fmt
% "All" % "" % "" % ""
637 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" ) << endl
;
640 g_outputBuffer
=ret
.str();
641 } catch(std::exception
& e
) {
642 g_outputBuffer
=e
.what();
647 g_lua
.writeFunction("getServers", []() {
648 setLuaNoSideEffect();
649 vector
<pair
<int, std::shared_ptr
<DownstreamState
> > > ret
;
651 for(const auto& s
: g_dstates
.getCopy()) {
652 ret
.push_back(make_pair(count
++, s
));
657 g_lua
.writeFunction("getPoolServers", [](string pool
) {
658 return getDownstreamCandidates(g_pools
.getCopy(), pool
);
661 g_lua
.writeFunction("getServer", [client
](int i
) {
663 return std::make_shared
<DownstreamState
>(ComboAddress());
664 return g_dstates
.getCopy().at(i
);
667 g_lua
.writeFunction("carbonServer", [](const std::string
& address
, boost::optional
<string
> ourName
,
668 boost::optional
<unsigned int> interval
, boost::optional
<string
> namespace_name
,
669 boost::optional
<string
> instance_name
) {
671 auto ours
= g_carbon
.getCopy();
673 ComboAddress(address
, 2003),
674 (namespace_name
&& !namespace_name
->empty()) ? *namespace_name
: "dnsdist",
675 ourName
? *ourName
: "",
676 (instance_name
&& !instance_name
->empty()) ? *instance_name
: "main" ,
677 interval
? *interval
: 30
679 g_carbon
.setState(ours
);
682 g_lua
.writeFunction("webserver", [client
](const std::string
& address
, const std::string
& password
, const boost::optional
<std::string
> apiKey
, const boost::optional
<std::map
<std::string
, std::string
> > customHeaders
) {
686 ComboAddress
local(address
);
688 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
689 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
692 auto launch
=[sock
, local
, password
, apiKey
, customHeaders
]() {
693 setWebserverPassword(password
);
694 setWebserverAPIKey(apiKey
);
695 setWebserverCustomHeaders(customHeaders
);
696 thread
t(dnsdistWebserverThread
, sock
, local
);
700 g_launchWork
->push_back(launch
);
704 catch(std::exception
& e
) {
705 g_outputBuffer
="Unable to bind to webserver socket on " + local
.toStringWithPort() + ": " + e
.what();
706 errlog("Unable to bind to webserver socket on %s: %s", local
.toStringWithPort(), e
.what());
711 typedef std::unordered_map
<std::string
, boost::variant
<std::string
, std::map
<std::string
, std::string
>> > webserveropts_t
;
713 g_lua
.writeFunction("setWebserverConfig", [](boost::optional
<webserveropts_t
> vars
) {
719 if(vars
->count("password")) {
720 const std::string password
= boost::get
<std::string
>(vars
->at("password"));
722 setWebserverPassword(password
);
724 if(vars
->count("apiKey")) {
725 const std::string apiKey
= boost::get
<std::string
>(vars
->at("apiKey"));
727 setWebserverAPIKey(apiKey
);
729 if(vars
->count("customHeaders")) {
730 const boost::optional
<std::map
<std::string
, std::string
> > headers
= boost::get
<std::map
<std::string
, std::string
> >(vars
->at("customHeaders"));
732 setWebserverCustomHeaders(headers
);
736 g_lua
.writeFunction("controlSocket", [client
](const std::string
& str
) {
738 ComboAddress
local(str
, 5199);
741 g_serverControl
= local
;
745 g_consoleEnabled
= true;
746 #ifdef HAVE_LIBSODIUM
747 if (g_configurationDone
&& g_consoleKey
.empty()) {
748 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");
753 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
754 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
757 auto launch
=[sock
, local
]() {
758 thread
t(controlThread
, sock
, local
);
762 g_launchWork
->push_back(launch
);
767 catch(std::exception
& e
) {
768 g_outputBuffer
="Unable to bind to control socket on " + local
.toStringWithPort() + ": " + e
.what();
769 errlog("Unable to bind to control socket on %s: %s", local
.toStringWithPort(), e
.what());
773 g_lua
.writeFunction("addConsoleACL", [](const std::string
& netmask
) {
775 #ifndef HAVE_LIBSODIUM
776 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
779 g_consoleACL
.modify([netmask
](NetmaskGroup
& nmg
) { nmg
.addMask(netmask
); });
782 g_lua
.writeFunction("setConsoleACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
785 #ifndef HAVE_LIBSODIUM
786 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
790 if(auto str
= boost::get
<string
>(&inp
)) {
793 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
794 nmg
.addMask(p
.second
);
796 g_consoleACL
.setState(nmg
);
799 g_lua
.writeFunction("showConsoleACL", []() {
800 setLuaNoSideEffect();
802 #ifndef HAVE_LIBSODIUM
803 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
807 g_consoleACL
.getLocal()->toStringVector(&vec
);
809 for(const auto& s
: vec
) {
810 g_outputBuffer
+= s
+ "\n";
814 g_lua
.writeFunction("clearQueryCounters", []() {
815 unsigned int size
{0};
817 WriteLock
wl(&g_qcount
.queryLock
);
818 size
= g_qcount
.records
.size();
819 g_qcount
.records
.clear();
822 boost::format
fmt("%d records cleared from query counter buffer\n");
823 g_outputBuffer
= (fmt
% size
).str();
826 g_lua
.writeFunction("getQueryCounters", [](boost::optional
<unsigned int> optMax
) {
827 setLuaNoSideEffect();
828 ReadLock
rl(&g_qcount
.queryLock
);
829 g_outputBuffer
= "query counting is currently: ";
830 g_outputBuffer
+= g_qcount
.enabled
? "enabled" : "disabled";
831 g_outputBuffer
+= (boost::format(" (%d records in buffer)\n") % g_qcount
.records
.size()).str();
833 boost::format
fmt("%-3d %s: %d request(s)\n");
834 QueryCountRecords::iterator it
;
835 unsigned int max
= optMax
? *optMax
: 10;
836 unsigned int index
{1};
837 for(it
= g_qcount
.records
.begin(); it
!= g_qcount
.records
.end() && index
<= max
; ++it
, ++index
) {
838 g_outputBuffer
+= (fmt
% index
% it
->first
% it
->second
).str();
842 g_lua
.writeFunction("setQueryCount", [](bool enabled
) { g_qcount
.enabled
=enabled
; });
844 g_lua
.writeFunction("setQueryCountFilter", [](QueryCountFilter func
) {
845 g_qcount
.filter
= func
;
848 g_lua
.writeFunction("makeKey", []() {
849 setLuaNoSideEffect();
850 g_outputBuffer
="setKey("+newKey()+")\n";
853 g_lua
.writeFunction("setKey", [](const std::string
& key
) {
854 if(!g_configurationDone
&& ! g_consoleKey
.empty()) { // this makes sure the commandline -k key prevails over dnsdist.conf
855 return; // but later setKeys() trump the -k value again
857 #ifndef HAVE_LIBSODIUM
858 warnlog("Calling setKey() while libsodium support has not been enabled is not secure, and will result in cleartext communications");
863 if(B64Decode(key
, newkey
) < 0) {
864 g_outputBuffer
=string("Unable to decode ")+key
+" as Base64";
865 errlog("%s", g_outputBuffer
);
871 g_lua
.writeFunction("testCrypto", [](boost::optional
<string
> optTestMsg
)
873 setLuaNoSideEffect();
874 #ifdef HAVE_LIBSODIUM
879 testmsg
= *optTestMsg
;
882 testmsg
= "testStringForCryptoTests";
888 string encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
889 string decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
894 encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
895 decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
897 if(testmsg
== decrypted
)
898 g_outputBuffer
="Everything is ok!\n";
900 g_outputBuffer
="Crypto failed..\n";
904 g_outputBuffer
="Crypto failed..\n";
907 g_outputBuffer
="Crypto not available.\n";
911 g_lua
.writeFunction("setTCPRecvTimeout", [](int timeout
) { g_tcpRecvTimeout
=timeout
; });
913 g_lua
.writeFunction("setTCPSendTimeout", [](int timeout
) { g_tcpSendTimeout
=timeout
; });
915 g_lua
.writeFunction("setUDPTimeout", [](int timeout
) { g_udpTimeout
=timeout
; });
917 g_lua
.writeFunction("setMaxUDPOutstanding", [](uint16_t max
) {
918 if (!g_configurationDone
) {
919 g_maxOutstanding
= max
;
921 g_outputBuffer
="Max UDP outstanding cannot be altered at runtime!\n";
925 g_lua
.writeFunction("setMaxTCPClientThreads", [](uint64_t max
) {
926 if (!g_configurationDone
) {
927 g_maxTCPClientThreads
= max
;
929 g_outputBuffer
="Maximum TCP client threads count cannot be altered at runtime!\n";
933 g_lua
.writeFunction("setMaxTCPQueuedConnections", [](uint64_t max
) {
934 if (!g_configurationDone
) {
935 g_maxTCPQueuedConnections
= max
;
937 g_outputBuffer
="The maximum number of queued TCP connections cannot be altered at runtime!\n";
941 g_lua
.writeFunction("setMaxTCPQueriesPerConnection", [](size_t max
) {
942 if (!g_configurationDone
) {
943 g_maxTCPQueriesPerConn
= max
;
945 g_outputBuffer
="The maximum number of queries per TCP connection cannot be altered at runtime!\n";
949 g_lua
.writeFunction("setMaxTCPConnectionsPerClient", [](size_t max
) {
950 if (!g_configurationDone
) {
951 g_maxTCPConnectionsPerClient
= max
;
953 g_outputBuffer
="The maximum number of TCP connection per client cannot be altered at runtime!\n";
957 g_lua
.writeFunction("setMaxTCPConnectionDuration", [](size_t max
) {
958 if (!g_configurationDone
) {
959 g_maxTCPConnectionDuration
= max
;
961 g_outputBuffer
="The maximum duration of a TCP connection cannot be altered at runtime!\n";
965 g_lua
.writeFunction("setCacheCleaningDelay", [](uint32_t delay
) { g_cacheCleaningDelay
= delay
; });
967 g_lua
.writeFunction("setCacheCleaningPercentage", [](uint16_t percentage
) { if (percentage
< 100) g_cacheCleaningPercentage
= percentage
; else g_cacheCleaningPercentage
= 100; });
969 g_lua
.writeFunction("setECSSourcePrefixV4", [](uint16_t prefix
) { g_ECSSourcePrefixV4
=prefix
; });
971 g_lua
.writeFunction("setECSSourcePrefixV6", [](uint16_t prefix
) { g_ECSSourcePrefixV6
=prefix
; });
973 g_lua
.writeFunction("setECSOverride", [](bool override
) { g_ECSOverride
=override
; });
975 g_lua
.writeFunction("setPreserveTrailingData", [](bool preserve
) { g_preserveTrailingData
= preserve
; });
977 g_lua
.writeFunction("showDynBlocks", []() {
978 setLuaNoSideEffect();
979 auto slow
= g_dynblockNMG
.getCopy();
982 boost::format
fmt("%-24s %8d %8d %-10s %-20s %s\n");
983 g_outputBuffer
= (fmt
% "What" % "Seconds" % "Blocks" % "Warning" % "Action" % "Reason").str();
984 for(const auto& e
: slow
) {
985 if(now
< e
->second
.until
)
986 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();
988 auto slow2
= g_dynblockSMT
.getCopy();
989 slow2
.visit([&now
, &fmt
](const SuffixMatchTree
<DynBlock
>& node
) {
990 if(now
<node
.d_value
.until
) {
992 if(!node
.d_value
.domain
.empty())
993 dom
= node
.d_value
.domain
.toString();
994 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();
1000 g_lua
.writeFunction("clearDynBlocks", []() {
1003 g_dynblockNMG
.setState(nmg
);
1004 SuffixMatchTree
<DynBlock
> smt
;
1005 g_dynblockSMT
.setState(smt
);
1008 g_lua
.writeFunction("addDynBlocks",
1009 [](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
) {
1014 auto slow
= g_dynblockNMG
.getCopy();
1015 struct timespec until
, now
;
1018 int actualSeconds
= seconds
? *seconds
: 10;
1019 until
.tv_sec
+= actualSeconds
;
1020 for(const auto& capair
: m
) {
1021 unsigned int count
= 0;
1022 auto got
= slow
.lookup(Netmask(capair
.first
));
1025 if(until
< got
->second
.until
) // had a longer policy
1027 if(now
< got
->second
.until
) // only inherit count on fresh query we are extending
1028 count
=got
->second
.blocks
;
1032 DynBlock db
{msg
,until
,DNSName(),(action
? *action
: DNSAction::Action::None
)};
1035 warnlog("Inserting dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
);
1036 slow
.insert(Netmask(capair
.first
)).second
=db
;
1038 g_dynblockNMG
.setState(slow
);
1041 g_lua
.writeFunction("addDynBlockSMT",
1042 [](const vector
<pair
<unsigned int, string
> >&names
, const std::string
& msg
, boost::optional
<int> seconds
, boost::optional
<DNSAction::Action
> action
) {
1043 if (names
.empty()) {
1047 auto slow
= g_dynblockSMT
.getCopy();
1048 struct timespec until
, now
;
1051 int actualSeconds
= seconds
? *seconds
: 10;
1052 until
.tv_sec
+= actualSeconds
;
1054 for(const auto& capair
: names
) {
1055 unsigned int count
= 0;
1056 DNSName
domain(capair
.second
);
1057 auto got
= slow
.lookup(domain
);
1060 if(until
< got
->until
) // had a longer policy
1062 if(now
< got
->until
) // only inherit count on fresh query we are extending
1068 DynBlock db
{msg
,until
,domain
,(action
? *action
: DNSAction::Action::None
)};
1071 warnlog("Inserting dynamic block for %s for %d seconds: %s", domain
, actualSeconds
, msg
);
1072 slow
.add(domain
, db
);
1074 g_dynblockSMT
.setState(slow
);
1077 g_lua
.writeFunction("setDynBlocksAction", [](DNSAction::Action action
) {
1078 if (!g_configurationDone
) {
1079 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
) {
1080 g_dynBlockAction
= action
;
1083 errlog("Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!");
1084 g_outputBuffer
="Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!\n";
1087 g_outputBuffer
="Dynamic blocks action cannot be altered at runtime!\n";
1091 g_lua
.writeFunction("addDNSCryptBind", [](const std::string
& addr
, const std::string
& providerName
, const std::string
& certFile
, const std::string keyFile
, boost::optional
<localbind_t
> vars
) {
1092 if (g_configurationDone
) {
1093 g_outputBuffer
="addDNSCryptBind cannot be used at runtime!\n";
1096 #ifdef HAVE_DNSCRYPT
1097 bool reusePort
= false;
1098 int tcpFastOpenQueueSize
= 0;
1099 std::string interface
;
1102 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1105 auto ctx
= std::make_shared
<DNSCryptContext
>(providerName
, certFile
, keyFile
);
1108 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1109 cs
->dnscryptCtx
= ctx
;
1110 g_dnsCryptLocals
.push_back(ctx
);
1111 g_frontends
.push_back(std::move(cs
));
1114 cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1115 cs
->dnscryptCtx
= ctx
;
1116 g_frontends
.push_back(std::move(cs
));
1118 catch(std::exception
& e
) {
1120 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1123 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1128 g_lua
.writeFunction("showDNSCryptBinds", []() {
1129 setLuaNoSideEffect();
1130 #ifdef HAVE_DNSCRYPT
1132 boost::format
fmt("%1$-3d %2% %|25t|%3$-20.20s");
1133 ret
<< (fmt
% "#" % "Address" % "Provider Name") << endl
;
1136 for (const auto& frontend
: g_frontends
) {
1137 const std::shared_ptr
<DNSCryptContext
> ctx
= frontend
->dnscryptCtx
;
1138 ret
<< (fmt
% idx
% frontend
->local
.toStringWithPort() % ctx
->getProviderName()) << endl
;
1142 g_outputBuffer
=ret
.str();
1144 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1148 g_lua
.writeFunction("getDNSCryptBind", [](size_t idx
) {
1149 setLuaNoSideEffect();
1150 #ifdef HAVE_DNSCRYPT
1151 std::shared_ptr
<DNSCryptContext
> ret
= nullptr;
1152 if (idx
< g_dnsCryptLocals
.size()) {
1153 ret
= g_dnsCryptLocals
.at(idx
);
1157 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1161 g_lua
.writeFunction("generateDNSCryptProviderKeys", [](const std::string
& publicKeyFile
, const std::string privateKeyFile
) {
1162 setLuaNoSideEffect();
1163 #ifdef HAVE_DNSCRYPT
1164 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1165 unsigned char privateKey
[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE
];
1166 sodium_mlock(privateKey
, sizeof(privateKey
));
1169 DNSCryptContext::generateProviderKeys(publicKey
, privateKey
);
1171 ofstream
pubKStream(publicKeyFile
);
1172 pubKStream
.write((char*) publicKey
, sizeof(publicKey
));
1175 ofstream
privKStream(privateKeyFile
);
1176 privKStream
.write((char*) privateKey
, sizeof(privateKey
));
1177 privKStream
.close();
1179 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1181 catch(std::exception
& e
) {
1183 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1186 sodium_memzero(privateKey
, sizeof(privateKey
));
1187 sodium_munlock(privateKey
, sizeof(privateKey
));
1189 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1193 g_lua
.writeFunction("printDNSCryptProviderFingerprint", [](const std::string
& publicKeyFile
) {
1194 setLuaNoSideEffect();
1195 #ifdef HAVE_DNSCRYPT
1196 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1199 ifstream
file(publicKeyFile
);
1200 file
.read((char *) &publicKey
, sizeof(publicKey
));
1203 throw std::runtime_error("Invalid dnscrypt provider public key file " + publicKeyFile
);
1206 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1208 catch(std::exception
& e
) {
1210 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1213 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1217 #ifdef HAVE_DNSCRYPT
1218 g_lua
.writeFunction("generateDNSCryptCertificate", [](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
) {
1219 setLuaNoSideEffect();
1220 DNSCryptPrivateKey privateKey
;
1224 if (generateDNSCryptCertificate(providerPrivateKeyFile
, serial
, begin
, end
, version
? *version
: DNSCryptExchangeVersion::VERSION1
, cert
, privateKey
)) {
1225 privateKey
.saveToFile(privateKeyFile
);
1226 DNSCryptContext::saveCertFromFile(cert
, certificateFile
);
1229 catch(const std::exception
& e
) {
1231 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1236 g_lua
.writeFunction("showPools", []() {
1237 setLuaNoSideEffect();
1240 boost::format
fmt("%1$-20.20s %|25t|%2$20s %|25t|%3$20s %|50t|%4%" );
1242 ret
<< (fmt
% "Name" % "Cache" % "ServerPolicy" % "Servers" ) << endl
;
1244 const auto localPools
= g_pools
.getCopy();
1245 for (const auto& entry
: localPools
) {
1246 const string
& name
= entry
.first
;
1247 const std::shared_ptr
<ServerPool
> pool
= entry
.second
;
1248 string cache
= pool
->packetCache
!= nullptr ? pool
->packetCache
->toString() : "";
1249 string policy
= g_policy
.getLocal()->name
;
1250 if (pool
->policy
!= nullptr) {
1251 policy
= pool
->policy
->name
;
1255 for (const auto& server
: pool
->getServers()) {
1256 if (!servers
.empty()) {
1259 if (!server
.second
->name
.empty()) {
1260 servers
+= server
.second
->name
;
1263 servers
+= server
.second
->remote
.toStringWithPort();
1266 ret
<< (fmt
% name
% cache
% policy
% servers
) << endl
;
1268 g_outputBuffer
=ret
.str();
1269 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1272 g_lua
.writeFunction("getPool", [client
](const string
& poolName
) {
1274 return std::make_shared
<ServerPool
>();
1276 auto localPools
= g_pools
.getCopy();
1277 std::shared_ptr
<ServerPool
> pool
= createPoolIfNotExists(localPools
, poolName
);
1278 g_pools
.setState(localPools
);
1282 g_lua
.writeFunction("setVerboseHealthChecks", [](bool verbose
) { g_verboseHealthChecks
=verbose
; });
1283 g_lua
.writeFunction("setStaleCacheEntriesTTL", [](uint32_t ttl
) { g_staleCacheEntriesTTL
= ttl
; });
1285 g_lua
.writeFunction("showBinds", []() {
1286 setLuaNoSideEffect();
1289 boost::format
fmt("%1$-3d %2$-20.20s %|35t|%3$-20.20s %|57t|%4%" );
1291 ret
<< (fmt
% "#" % "Address" % "Protocol" % "Queries" ) << endl
;
1294 for (const auto& front
: g_frontends
) {
1295 ret
<< (fmt
% counter
% front
->local
.toStringWithPort() % front
->getType() % front
->queries
) << endl
;
1298 g_outputBuffer
=ret
.str();
1299 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1302 g_lua
.writeFunction("getBind", [](size_t num
) {
1303 setLuaNoSideEffect();
1304 ClientState
* ret
= nullptr;
1305 if(num
< g_frontends
.size()) {
1306 ret
=g_frontends
[num
].get();
1311 g_lua
.writeFunction("help", [](boost::optional
<std::string
> command
) {
1312 setLuaNoSideEffect();
1313 g_outputBuffer
= "";
1314 for (const auto& keyword
: g_consoleKeywords
) {
1316 g_outputBuffer
+= keyword
.toString() + "\n";
1318 else if (keyword
.name
== command
) {
1319 g_outputBuffer
= keyword
.toString() + "\n";
1324 g_outputBuffer
= "Nothing found for " + *command
+ "\n";
1328 g_lua
.writeFunction("showVersion", []() {
1329 setLuaNoSideEffect();
1330 g_outputBuffer
= "dnsdist " + std::string(VERSION
) + "\n";
1333 g_lua
.writeFunction("showSecurityStatus", []() {
1334 setLuaNoSideEffect();
1335 g_outputBuffer
= std::to_string(g_stats
.securityStatus
) + "\n";
1339 g_lua
.writeFunction("setDefaultBPFFilter", [](std::shared_ptr
<BPFFilter
> bpf
) {
1340 if (g_configurationDone
) {
1341 g_outputBuffer
="setDefaultBPFFilter() cannot be used at runtime!\n";
1344 g_defaultBPFFilter
= bpf
;
1347 g_lua
.writeFunction("registerDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1349 g_dynBPFFilters
.push_back(dbpf
);
1353 g_lua
.writeFunction("unregisterDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1355 for (auto it
= g_dynBPFFilters
.begin(); it
!= g_dynBPFFilters
.end(); it
++) {
1357 g_dynBPFFilters
.erase(it
);
1364 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
) {
1366 struct timespec until
, now
;
1367 clock_gettime(CLOCK_MONOTONIC
, &now
);
1369 int actualSeconds
= seconds
? *seconds
: 10;
1370 until
.tv_sec
+= actualSeconds
;
1371 for(const auto& capair
: m
) {
1372 if (dynbpf
->block(capair
.first
, until
)) {
1373 warnlog("Inserting eBPF dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
? *msg
: "");
1378 #endif /* HAVE_EBPF */
1380 g_lua
.writeFunction
<std::unordered_map
<string
,uint64_t>()>("getStatisticsCounters", []() {
1381 setLuaNoSideEffect();
1382 std::unordered_map
<string
,uint64_t> res
;
1383 for(const auto& entry
: g_stats
.entries
) {
1384 if(const auto& val
= boost::get
<DNSDistStats::stat_t
*>(&entry
.second
))
1385 res
[entry
.first
] = (*val
)->load();
1390 g_lua
.writeFunction("includeDirectory", [](const std::string
& dirname
) {
1391 if (g_configurationDone
) {
1392 errlog("includeDirectory() cannot be used at runtime!");
1393 g_outputBuffer
="includeDirectory() cannot be used at runtime!\n";
1398 errlog("includeDirectory() cannot be used recursively!");
1399 g_outputBuffer
="includeDirectory() cannot be used recursively!\n";
1405 if (stat(dirname
.c_str(), &st
)) {
1406 errlog("The included directory %s does not exist!", dirname
.c_str());
1407 g_outputBuffer
="The included directory " + dirname
+ " does not exist!";
1411 if (!S_ISDIR(st
.st_mode
)) {
1412 errlog("The included directory %s is not a directory!", dirname
.c_str());
1413 g_outputBuffer
="The included directory " + dirname
+ " is not a directory!";
1419 std::list
<std::string
> files
;
1420 if (!(dirp
= opendir(dirname
.c_str()))) {
1421 errlog("Error opening the included directory %s!", dirname
.c_str());
1422 g_outputBuffer
="Error opening the included directory " + dirname
+ "!";
1426 while((ent
= readdir(dirp
)) != NULL
) {
1427 if (ent
->d_name
[0] == '.') {
1431 if (boost::ends_with(ent
->d_name
, ".conf")) {
1432 std::ostringstream namebuf
;
1433 namebuf
<< dirname
.c_str() << "/" << ent
->d_name
;
1435 if (stat(namebuf
.str().c_str(), &st
) || !S_ISREG(st
.st_mode
)) {
1439 files
.push_back(namebuf
.str());
1446 for (auto file
= files
.begin(); file
!= files
.end(); ++file
) {
1447 std::ifstream
ifs(*file
);
1449 warnlog("Unable to read configuration from '%s'", *file
);
1451 vinfolog("Read configuration from '%s'", *file
);
1454 g_lua
.executeCode(ifs
);
1460 g_lua
.writeFunction("setAPIWritable", [](bool writable
, boost::optional
<std::string
> apiConfigDir
) {
1462 g_apiReadWrite
= writable
;
1464 if (!(*apiConfigDir
).empty()) {
1465 g_apiConfigDirectory
= *apiConfigDir
;
1468 errlog("The API configuration directory value cannot be empty!");
1469 g_outputBuffer
="The API configuration directory value cannot be empty!";
1474 g_lua
.writeFunction("setServFailWhenNoServer", [](bool servfail
) {
1476 g_servFailOnNoPolicy
= servfail
;
1479 g_lua
.writeFunction("setRoundRobinFailOnNoServer", [](bool fail
) {
1481 g_roundrobinFailOnNoServer
= fail
;
1484 g_lua
.writeFunction("setRingBuffersSize", [](size_t capacity
, boost::optional
<size_t> numberOfShards
) {
1486 if (g_configurationDone
) {
1487 errlog("setRingBuffersSize() cannot be used at runtime!");
1488 g_outputBuffer
="setRingBuffersSize() cannot be used at runtime!\n";
1491 g_rings
.setCapacity(capacity
, numberOfShards
? *numberOfShards
: 1);
1494 g_lua
.writeFunction("setRingBuffersLockRetries", [](size_t retries
) {
1496 g_rings
.setNumberOfLockRetries(retries
);
1499 g_lua
.writeFunction("setWHashedPertubation", [](uint32_t pertub
) {
1501 g_hashperturb
= pertub
;
1504 g_lua
.writeFunction("setTCPUseSinglePipe", [](bool flag
) {
1505 if (g_configurationDone
) {
1506 g_outputBuffer
="setTCPUseSinglePipe() cannot be used at runtime!\n";
1510 g_useTCPSinglePipe
= flag
;
1513 g_lua
.writeFunction("snmpAgent", [client
](bool enableTraps
, boost::optional
<std::string
> masterSocket
) {
1516 #ifdef HAVE_NET_SNMP
1517 if (g_configurationDone
) {
1518 errlog("snmpAgent() cannot be used at runtime!");
1519 g_outputBuffer
="snmpAgent() cannot be used at runtime!\n";
1523 if (g_snmpEnabled
) {
1524 errlog("snmpAgent() cannot be used twice!");
1525 g_outputBuffer
="snmpAgent() cannot be used twice!\n";
1529 g_snmpEnabled
= true;
1530 g_snmpTrapsEnabled
= enableTraps
;
1531 g_snmpAgent
= new DNSDistSNMPAgent("dnsdist", masterSocket
? *masterSocket
: std::string());
1533 errlog("NET SNMP support is required to use snmpAgent()");
1534 g_outputBuffer
="NET SNMP support is required to use snmpAgent()\n";
1535 #endif /* HAVE_NET_SNMP */
1538 g_lua
.writeFunction("sendCustomTrap", [](const std::string
& str
) {
1539 #ifdef HAVE_NET_SNMP
1540 if (g_snmpAgent
&& g_snmpTrapsEnabled
) {
1541 g_snmpAgent
->sendCustomTrap(str
);
1543 #endif /* HAVE_NET_SNMP */
1546 g_lua
.writeFunction("setPoolServerPolicy", [](ServerPolicy policy
, string pool
) {
1548 auto localPools
= g_pools
.getCopy();
1549 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(policy
));
1550 g_pools
.setState(localPools
);
1553 g_lua
.writeFunction("setPoolServerPolicyLua", [](string name
, policyfunc_t policy
, string pool
) {
1555 auto localPools
= g_pools
.getCopy();
1556 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(ServerPolicy
{name
, policy
, true}));
1557 g_pools
.setState(localPools
);
1560 g_lua
.writeFunction("showPoolServerPolicy", [](string pool
) {
1562 auto localPools
= g_pools
.getCopy();
1563 auto poolObj
= getPool(localPools
, pool
);
1564 if (poolObj
->policy
== nullptr) {
1565 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1567 g_outputBuffer
=poolObj
->policy
->name
+"\n";
1571 g_lua
.writeFunction("setTCPDownstreamCleanupInterval", [](uint16_t interval
) {
1573 g_downstreamTCPCleanupInterval
= interval
;
1576 g_lua
.writeFunction("setConsoleConnectionsLogging", [](bool enabled
) {
1577 g_logConsoleConnections
= enabled
;
1580 g_lua
.writeFunction("setConsoleOutputMaxMsgSize", [](uint32_t size
) {
1581 g_consoleOutputMsgMaxSize
= size
;
1584 g_lua
.writeFunction("setUDPMultipleMessagesVectorSize", [](size_t vSize
) {
1585 if (g_configurationDone
) {
1586 errlog("setUDPMultipleMessagesVectorSize() cannot be used at runtime!");
1587 g_outputBuffer
="setUDPMultipleMessagesVectorSize() cannot be used at runtime!\n";
1590 #if defined(HAVE_RECVMMSG) && defined(HAVE_SENDMMSG) && defined(MSG_WAITFORONE)
1592 g_udpVectorSize
= vSize
;
1594 errlog("recvmmsg() support is not available!");
1595 g_outputBuffer
="recvmmsg support is not available!\n";
1599 g_lua
.writeFunction("setAddEDNSToSelfGeneratedResponses", [](bool add
) {
1600 g_addEDNSToSelfGeneratedResponses
= add
;
1603 g_lua
.writeFunction("setPayloadSizeOnSelfGeneratedAnswers", [](uint16_t payloadSize
) {
1604 if (payloadSize
< 512) {
1605 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!");
1606 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!";
1609 if (payloadSize
> s_udpIncomingBufferSize
) {
1610 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to %d instead!", s_udpIncomingBufferSize
);
1611 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to " + std::to_string(s_udpIncomingBufferSize
) + " instead";
1612 payloadSize
= s_udpIncomingBufferSize
;
1614 g_PayloadSizeSelfGenAnswers
= payloadSize
;
1617 g_lua
.writeFunction("setSecurityPollSuffix", [](const std::string
& suffix
) {
1618 if (g_configurationDone
) {
1619 g_outputBuffer
="setSecurityPollSuffix() cannot be used at runtime!\n";
1623 g_secPollSuffix
= suffix
;
1626 g_lua
.writeFunction("setSecurityPollInterval", [](time_t newInterval
) {
1627 if (newInterval
<= 0) {
1628 warnlog("setSecurityPollInterval() should be > 0, skipping");
1629 g_outputBuffer
="setSecurityPollInterval() should be > 0, skipping";
1632 g_secPollInterval
= newInterval
;
1635 g_lua
.writeFunction("setSyslogFacility", [](int facility
) {
1637 if (g_configurationDone
) {
1638 g_outputBuffer
="setSyslogFacility cannot be used at runtime!\n";
1641 setSyslogFacility(facility
);
1644 g_lua
.writeFunction("addDOHLocal", [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
<boost::variant
<std::string
, vector
<pair
<int, std::string
> > > > urls
, boost::optional
<localbind_t
> vars
) {
1645 #ifdef HAVE_DNS_OVER_HTTPS
1650 if (g_configurationDone
) {
1651 g_outputBuffer
="addDOHLocal cannot be used at runtime!\n";
1654 auto frontend
= std::make_shared
<DOHFrontend
>();
1656 if (!loadTLSCertificateAndKeys("addDOHLocal", frontend
->d_certKeyPairs
, certFiles
, keyFiles
)) {
1660 frontend
->d_local
= ComboAddress(addr
, 443);
1662 if (urls
->type() == typeid(std::string
)) {
1663 frontend
->d_urls
.push_back(boost::get
<std::string
>(*urls
));
1665 else if (urls
->type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1666 auto urlsVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(*urls
);
1667 for(const auto& p
: urlsVect
) {
1668 frontend
->d_urls
.push_back(p
.second
);
1673 frontend
->d_urls
= {"/"};
1676 bool reusePort
= false;
1677 int tcpFastOpenQueueSize
= 0;
1678 std::string interface
;
1682 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1684 if (vars
->count("idleTimeout")) {
1685 frontend
->d_idleTimeout
= boost::get
<int>((*vars
)["idleTimeout"]);
1687 if (vars
->count("ciphers")) {
1688 frontend
->d_ciphers
= boost::get
<const string
>((*vars
)["ciphers"]);
1690 if (vars
->count("ciphersTLS13")) {
1691 frontend
->d_ciphers13
= boost::get
<const string
>((*vars
)["ciphersTLS13"]);
1693 if (vars
->count("serverTokens")) {
1694 frontend
->d_serverTokens
= boost::get
<const string
>((*vars
)["serverTokens"]);
1697 g_dohlocals
.push_back(frontend
);
1698 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_local
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1699 cs
->dohFrontend
= frontend
;
1700 g_frontends
.push_back(std::move(cs
));
1702 throw std::runtime_error("addDOHLocal() called but DNS over HTTPS support is not present!");
1706 g_lua
.writeFunction("showDOHFrontends", []() {
1707 #ifdef HAVE_DNS_OVER_HTTPS
1708 setLuaNoSideEffect();
1711 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d");
1712 ret
<< (fmt
% "#" % "Address" % "HTTP" % "HTTP/1" % "HTTP/2" % "TLS 1.0" % "TLS 1.1" % "TLS 1.2" % "TLS 1.3" % "TLS other" % "GET" % "POST" % "Bad" % "Errors" % "Valid") << endl
;
1714 for (const auto& ctx
: g_dohlocals
) {
1715 ret
<< (fmt
% counter
% ctx
->d_local
.toStringWithPort() % ctx
->d_httpconnects
% ctx
->d_http1queries
% ctx
->d_http2queries
% ctx
->d_tls10queries
% ctx
->d_tls11queries
% ctx
->d_tls12queries
% ctx
->d_tls13queries
% ctx
->d_tlsUnknownqueries
% ctx
->d_getqueries
% ctx
->d_postqueries
% ctx
->d_badrequests
% ctx
->d_errorresponses
% ctx
->d_validresponses
) << endl
;
1718 g_outputBuffer
= ret
.str();
1720 catch(const std::exception
& e
) {
1721 g_outputBuffer
= e
.what();
1725 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1729 g_lua
.writeFunction("getDOHFrontend", [](size_t index
) {
1730 std::shared_ptr
<DOHFrontend
> result
= nullptr;
1731 #ifdef HAVE_DNS_OVER_HTTPS
1732 setLuaNoSideEffect();
1734 if (index
< g_dohlocals
.size()) {
1735 result
= g_dohlocals
.at(index
);
1738 errlog("Error: trying to get DOH frontend with index %zu but we only have %zu frontend(s)\n", index
, g_dohlocals
.size());
1739 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";
1742 catch(const std::exception
& e
) {
1743 g_outputBuffer
="Error while trying to get DOH frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
1744 errlog("Error while trying to get DOH frontend with index %zu: %s\n", index
, string(e
.what()));
1747 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1752 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("reloadCertificates", [](std::shared_ptr
<DOHFrontend
> frontend
) {
1753 if (frontend
!= nullptr) {
1754 frontend
->reloadCertificates();
1758 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
) {
1759 #ifdef HAVE_DNS_OVER_TLS
1763 if (g_configurationDone
) {
1764 g_outputBuffer
="addTLSLocal cannot be used at runtime!\n";
1767 shared_ptr
<TLSFrontend
> frontend
= std::make_shared
<TLSFrontend
>();
1769 if (!loadTLSCertificateAndKeys("addTLSLocal", frontend
->d_certKeyPairs
, certFiles
, keyFiles
)) {
1773 bool reusePort
= false;
1774 int tcpFastOpenQueueSize
= 0;
1775 std::string interface
;
1779 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1781 if (vars
->count("provider")) {
1782 frontend
->d_provider
= boost::get
<const string
>((*vars
)["provider"]);
1785 if (vars
->count("ciphers")) {
1786 frontend
->d_ciphers
= boost::get
<const string
>((*vars
)["ciphers"]);
1789 if (vars
->count("ciphersTLS13")) {
1790 frontend
->d_ciphers13
= boost::get
<const string
>((*vars
)["ciphersTLS13"]);
1793 if (vars
->count("ticketKeyFile")) {
1794 frontend
->d_ticketKeyFile
= boost::get
<const string
>((*vars
)["ticketKeyFile"]);
1797 if (vars
->count("ticketsKeysRotationDelay")) {
1798 frontend
->d_ticketsKeyRotationDelay
= boost::get
<int>((*vars
)["ticketsKeysRotationDelay"]);
1801 if (vars
->count("numberOfTicketsKeys")) {
1802 frontend
->d_numberOfTicketsKeys
= boost::get
<int>((*vars
)["numberOfTicketsKeys"]);
1805 if (vars
->count("sessionTickets")) {
1806 frontend
->d_enableTickets
= boost::get
<bool>((*vars
)["sessionTickets"]);
1809 if (vars
->count("numberOfStoredSessions")) {
1810 auto value
= boost::get
<int>((*vars
)["numberOfStoredSessions"]);
1812 errlog("Invalid value '%d' for addTLSLocal() parameter 'numberOfStoredSessions', should be >= 0, dismissing", value
);
1813 g_outputBuffer
="Invalid value '" + std::to_string(value
) + "' for addTLSLocal() parameter 'numberOfStoredSessions', should be >= 0, dimissing";
1816 frontend
->d_maxStoredSessions
= value
;
1821 frontend
->d_addr
= ComboAddress(addr
, 853);
1822 vinfolog("Loading TLS provider %s", frontend
->d_provider
);
1823 // only works pre-startup, so no sync necessary
1824 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_addr
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1825 cs
->tlsFrontend
= frontend
;
1826 g_tlslocals
.push_back(cs
->tlsFrontend
);
1827 g_frontends
.push_back(std::move(cs
));
1829 catch(const std::exception
& e
) {
1830 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1833 throw std::runtime_error("addTLSLocal() called but DNS over TLS support is not present!");
1837 g_lua
.writeFunction("showTLSContexts", []() {
1838 #ifdef HAVE_DNS_OVER_TLS
1839 setLuaNoSideEffect();
1842 boost::format
fmt("%1$-3d %2$-20.20s %|25t|%3$-14d %|40t|%4$-14d %|54t|%5$-21.21s");
1844 ret
<< (fmt
% "#" % "Address" % "# ticket keys" % "Rotation delay" % "Next rotation" ) << endl
;
1846 for (const auto& ctx
: g_tlslocals
) {
1847 ret
<< (fmt
% counter
% ctx
->d_addr
.toStringWithPort() % ctx
->getTicketsKeysCount() % ctx
->getTicketsKeyRotationDelay() % ctx
->getNextTicketsKeyRotation()) << endl
;
1850 g_outputBuffer
= ret
.str();
1852 catch(const std::exception
& e
) {
1853 g_outputBuffer
= e
.what();
1857 g_outputBuffer
="DNS over TLS support is not present!\n";
1861 g_lua
.writeFunction("getTLSContext", [](size_t index
) {
1862 std::shared_ptr
<TLSCtx
> result
= nullptr;
1863 #ifdef HAVE_DNS_OVER_TLS
1864 setLuaNoSideEffect();
1866 if (index
< g_tlslocals
.size()) {
1867 result
= g_tlslocals
.at(index
)->getContext();
1870 errlog("Error: trying to get TLS context with index %zu but we only have %zu context(s)\n", index
, g_tlslocals
.size());
1871 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";
1874 catch(const std::exception
& e
) {
1875 g_outputBuffer
="Error while trying to get TLS context with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
1876 errlog("Error while trying to get TLS context with index %zu: %s\n", index
, string(e
.what()));
1879 g_outputBuffer
="DNS over TLS support is not present!\n";
1884 g_lua
.writeFunction("getTLSFrontend", [](size_t index
) {
1885 std::shared_ptr
<TLSFrontend
> result
= nullptr;
1886 #ifdef HAVE_DNS_OVER_TLS
1887 setLuaNoSideEffect();
1889 if (index
< g_tlslocals
.size()) {
1890 result
= g_tlslocals
.at(index
);
1893 errlog("Error: trying to get TLS frontend with index %zu but we only have %zu frontends\n", index
, g_tlslocals
.size());
1894 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";
1897 catch(const std::exception
& e
) {
1898 g_outputBuffer
="Error while trying to get TLS frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
1899 errlog("Error while trying to get TLS frontend with index %zu: %s\n", index
, string(e
.what()));
1902 g_outputBuffer
="DNS over TLS support is not present!\n";
1907 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<TLSCtx
> ctx
) {
1908 if (ctx
!= nullptr) {
1909 ctx
->rotateTicketsKey(time(nullptr));
1913 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<TLSCtx
> ctx
, const std::string
& file
) {
1914 if (ctx
!= nullptr) {
1915 ctx
->loadTicketsKeys(file
);
1919 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
) {
1920 #ifdef HAVE_DNS_OVER_TLS
1921 if (loadTLSCertificateAndKeys("loadNewCertificatesAndKeys", frontend
->d_certKeyPairs
, certFiles
, keyFiles
)) {
1922 frontend
->setupTLS();
1927 g_lua
.writeFunction("reloadAllCertificates", []() {
1928 for (auto& frontend
: g_frontends
) {
1933 #ifdef HAVE_DNSCRYPT
1934 if (frontend
->dnscryptCtx
) {
1935 frontend
->dnscryptCtx
->reloadCertificate();
1937 #endif /* HAVE_DNSCRYPT */
1938 #ifdef HAVE_DNS_OVER_TLS
1939 if (frontend
->tlsFrontend
) {
1940 frontend
->tlsFrontend
->setupTLS();
1942 #endif /* HAVE_DNS_OVER_TLS */
1943 #ifdef HAVE_DNS_OVER_HTTPS
1944 if (frontend
->dohFrontend
) {
1945 frontend
->dohFrontend
->reloadCertificates();
1947 #endif /* HAVE_DNS_OVER_HTTPS */
1949 catch(const std::exception
& e
) {
1950 errlog("Error reloading certificates for frontend %s: %s", frontend
->local
.toStringWithPort(), e
.what());
1955 g_lua
.writeFunction("setAllowEmptyResponse", [](bool allow
) { g_allowEmptyResponse
=allow
; });
1958 vector
<std::function
<void(void)>> setupLua(bool client
, const std::string
& config
)
1960 g_launchWork
= new vector
<std::function
<void(void)>>();
1963 setupLuaConfig(client
);
1964 setupLuaBindings(client
);
1965 setupLuaBindingsDNSQuestion();
1966 setupLuaInspection();
1970 std::ifstream
ifs(config
);
1972 warnlog("Unable to read configuration from '%s'", config
);
1974 vinfolog("Read configuration from '%s'", config
);
1976 g_lua
.executeCode(ifs
);
1978 auto ret
= *g_launchWork
;
1979 delete g_launchWork
;
1980 g_launchWork
= nullptr;