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("sessionTimeout")) {
187 config
.d_sessionTimeout
= boost::get
<int>((*vars
)["sessionTimeout"]);
190 if (vars
->count("sessionTickets")) {
191 config
.d_enableTickets
= boost::get
<bool>((*vars
)["sessionTickets"]);
194 if (vars
->count("numberOfStoredSessions")) {
195 auto value
= boost::get
<int>((*vars
)["numberOfStoredSessions"]);
197 errlog("Invalid value '%d' for %s() parameter 'numberOfStoredSessions', should be >= 0, dismissing", value
, context
);
198 g_outputBuffer
="Invalid value '" + std::to_string(value
) + "' for " + context
+ "() parameter 'numberOfStoredSessions', should be >= 0, dimissing";
200 config
.d_maxStoredSessions
= value
;
203 if (vars
->count("ocspResponses")) {
204 auto files
= boost::get
<std::vector
<std::pair
<int, std::string
>>>((*vars
)["ocspResponses"]);
205 for (const auto& file
: files
) {
206 config
.d_ocspFiles
.push_back(file
.second
);
210 if (vars
->count("keyLogFile")) {
211 config
.d_keyLogFile
= boost::get
<const string
>((*vars
)["keyLogFile"]);
215 #endif // defined(HAVE_DNS_OVER_TLS) || defined(HAVE_DNS_OVER_HTTPS)
217 static void setupLuaConfig(bool client
, bool configCheck
)
219 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
, vector
<pair
<int, std::string
> >, DownstreamState::checkfunc_t
> > newserver_t
;
220 g_lua
.writeFunction("inClientStartup", [client
]() {
221 return client
&& !g_configurationDone
;
224 g_lua
.writeFunction("inConfigCheck", [configCheck
]() {
228 g_lua
.writeFunction("newServer",
229 [client
, configCheck
](boost::variant
<string
,newserver_t
> pvars
, boost::optional
<int> qps
) {
232 std::shared_ptr
<DownstreamState
> ret
= std::make_shared
<DownstreamState
>(ComboAddress());
235 ComboAddress serverAddr
;
236 std::string serverAddressStr
;
237 if(auto addrStr
= boost::get
<string
>(&pvars
)) {
238 serverAddressStr
= *addrStr
;
240 vars
["qps"] = std::to_string(*qps
);
243 vars
= boost::get
<newserver_t
>(pvars
);
244 serverAddressStr
= boost::get
<string
>(vars
["address"]);
248 serverAddr
= ComboAddress(serverAddressStr
, 53);
250 catch(const PDNSException
& e
) {
251 g_outputBuffer
="Error creating new server: "+string(e
.reason
);
252 errlog("Error creating new server with address %s: %s", serverAddressStr
, e
.reason
);
255 catch(std::exception
& e
) {
256 g_outputBuffer
="Error creating new server: "+string(e
.what());
257 errlog("Error creating new server with address %s: %s", serverAddressStr
, e
.what());
261 if(IsAnyAddress(serverAddr
)) {
262 g_outputBuffer
="Error creating new server: invalid address for a downstream server.";
263 errlog("Error creating new server: %s is not a valid address for a downstream server", serverAddressStr
);
267 ComboAddress sourceAddr
;
268 std::string sourceItfName
;
269 unsigned int sourceItf
= 0;
270 size_t numberOfSockets
= 1;
273 if(vars
.count("source")) {
274 /* handle source in the following forms:
275 - v4 address ("192.0.2.1")
276 - v6 address ("2001:DB8::1")
277 - interface name ("eth0")
278 - v4 address and interface name ("192.0.2.1@eth0")
279 - v6 address and interface name ("2001:DB8::1@eth0")
281 const string source
= boost::get
<string
>(vars
["source"]);
283 std::string::size_type pos
= source
.find("@");
284 if (pos
== std::string::npos
) {
285 /* no '@', try to parse that as a valid v4/v6 address */
287 sourceAddr
= ComboAddress(source
);
297 /* try to parse as interface name, or v4/v6@itf */
298 sourceItfName
= source
.substr(pos
== std::string::npos
? 0 : pos
+ 1);
299 unsigned int itfIdx
= if_nametoindex(sourceItfName
.c_str());
302 if (pos
== 0 || pos
== std::string::npos
) {
303 /* "eth0" or "@eth0" */
307 /* "192.0.2.1@eth0" */
308 sourceAddr
= ComboAddress(source
.substr(0, pos
));
311 #ifdef SO_BINDTODEVICE
312 /* we need to retain CAP_NET_RAW to be able to set SO_BINDTODEVICE in the health checks */
313 g_capabilitiesToRetain
.insert("CAP_NET_RAW");
318 warnlog("Dismissing source %s because '%s' is not a valid interface name", source
, sourceItfName
);
323 if (vars
.count("sockets")) {
324 numberOfSockets
= std::stoul(boost::get
<string
>(vars
["sockets"]));
325 if (numberOfSockets
== 0) {
326 warnlog("Dismissing invalid number of sockets '%s', using 1 instead", boost::get
<string
>(vars
["sockets"]));
331 // create but don't connect the socket in client or check-config modes
332 ret
=std::make_shared
<DownstreamState
>(serverAddr
, sourceAddr
, sourceItf
, sourceItfName
, numberOfSockets
, !(client
|| configCheck
));
333 if (!(client
|| configCheck
)) {
334 infolog("Added downstream server %s", serverAddr
.toStringWithPort());
337 if(vars
.count("qps")) {
338 int qpsVal
=std::stoi(boost::get
<string
>(vars
["qps"]));
339 ret
->qps
=QPSLimiter(qpsVal
, qpsVal
);
342 if(vars
.count("order")) {
343 ret
->order
=std::stoi(boost::get
<string
>(vars
["order"]));
346 if(vars
.count("weight")) {
348 int weightVal
=std::stoi(boost::get
<string
>(vars
["weight"]));
351 errlog("Error creating new server: downstream weight value must be greater than 0.");
355 ret
->setWeight(weightVal
);
357 catch(std::exception
& e
) {
358 // std::stoi will throw an exception if the string isn't in a value int range
359 errlog("Error creating new server: downstream weight value must be between %s and %s", 1, std::numeric_limits
<int>::max());
364 if(vars
.count("retries")) {
365 ret
->retries
=std::stoi(boost::get
<string
>(vars
["retries"]));
368 if(vars
.count("checkInterval")) {
369 ret
->checkInterval
=static_cast<unsigned int>(std::stoul(boost::get
<string
>(vars
["checkInterval"])));
372 if(vars
.count("tcpConnectTimeout")) {
373 ret
->tcpConnectTimeout
=std::stoi(boost::get
<string
>(vars
["tcpConnectTimeout"]));
376 if(vars
.count("tcpSendTimeout")) {
377 ret
->tcpSendTimeout
=std::stoi(boost::get
<string
>(vars
["tcpSendTimeout"]));
380 if(vars
.count("tcpRecvTimeout")) {
381 ret
->tcpRecvTimeout
=std::stoi(boost::get
<string
>(vars
["tcpRecvTimeout"]));
384 if(vars
.count("tcpFastOpen")) {
385 bool fastOpen
= boost::get
<bool>(vars
["tcpFastOpen"]);
388 ret
->tcpFastOpen
=true;
390 warnlog("TCP Fast Open has been configured on downstream server %s but is not supported", boost::get
<string
>(vars
["address"]));
395 if(vars
.count("name")) {
396 ret
->setName(boost::get
<string
>(vars
["name"]));
399 if (vars
.count("id")) {
400 ret
->setId(boost::lexical_cast
<boost::uuids::uuid
>(boost::get
<string
>(vars
["id"])));
403 if(vars
.count("checkName")) {
404 ret
->checkName
=DNSName(boost::get
<string
>(vars
["checkName"]));
407 if(vars
.count("checkType")) {
408 ret
->checkType
=boost::get
<string
>(vars
["checkType"]);
411 if(vars
.count("checkClass")) {
412 ret
->checkClass
=std::stoi(boost::get
<string
>(vars
["checkClass"]));
415 if(vars
.count("checkFunction")) {
416 ret
->checkFunction
= boost::get
<DownstreamState::checkfunc_t
>(vars
["checkFunction"]);
419 if(vars
.count("checkTimeout")) {
420 ret
->checkTimeout
= std::stoi(boost::get
<string
>(vars
["checkTimeout"]));
423 if(vars
.count("setCD")) {
424 ret
->setCD
=boost::get
<bool>(vars
["setCD"]);
427 if(vars
.count("mustResolve")) {
428 ret
->mustResolve
=boost::get
<bool>(vars
["mustResolve"]);
431 if(vars
.count("useClientSubnet")) {
432 ret
->useECS
=boost::get
<bool>(vars
["useClientSubnet"]);
435 if(vars
.count("disableZeroScope")) {
436 ret
->disableZeroScope
=boost::get
<bool>(vars
["disableZeroScope"]);
439 if(vars
.count("ipBindAddrNoPort")) {
440 ret
->ipBindAddrNoPort
=boost::get
<bool>(vars
["ipBindAddrNoPort"]);
443 if(vars
.count("addXPF")) {
444 ret
->xpfRRCode
=std::stoi(boost::get
<string
>(vars
["addXPF"]));
447 if(vars
.count("maxCheckFailures")) {
448 ret
->maxCheckFailures
=std::stoi(boost::get
<string
>(vars
["maxCheckFailures"]));
451 if(vars
.count("rise")) {
452 ret
->minRiseSuccesses
=std::stoi(boost::get
<string
>(vars
["rise"]));
455 if(vars
.count("cpus")) {
456 for (const auto cpu
: boost::get
<vector
<pair
<int,string
>>>(vars
["cpus"])) {
457 cpus
.insert(std::stoi(cpu
.second
));
461 /* this needs to be done _AFTER_ the order has been set,
462 since the server are kept ordered inside the pool */
463 auto localPools
= g_pools
.getCopy();
464 if(vars
.count("pool")) {
465 if(auto* pool
= boost::get
<string
>(&vars
["pool"])) {
466 ret
->pools
.insert(*pool
);
469 auto pools
= boost::get
<vector
<pair
<int, string
> > >(vars
["pool"]);
470 for(auto& p
: pools
) {
471 ret
->pools
.insert(p
.second
);
474 for(const auto& poolName
: ret
->pools
) {
475 addServerToPool(localPools
, poolName
, ret
);
479 addServerToPool(localPools
, "", ret
);
481 g_pools
.setState(localPools
);
483 if (ret
->connected
) {
484 ret
->threadStarted
.test_and_set();
487 g_launchWork
->push_back([ret
,cpus
]() {
488 ret
->tid
= thread(responderThread
, ret
);
490 mapThreadToCPUList(ret
->tid
.native_handle(), cpus
);
495 ret
->tid
= thread(responderThread
, ret
);
497 mapThreadToCPUList(ret
->tid
.native_handle(), cpus
);
502 auto states
= g_dstates
.getCopy();
503 states
.push_back(ret
);
504 std::stable_sort(states
.begin(), states
.end(), [](const decltype(ret
)& a
, const decltype(ret
)& b
) {
505 return a
->order
< b
->order
;
507 g_dstates
.setState(states
);
511 g_lua
.writeFunction("rmServer",
512 [](boost::variant
<std::shared_ptr
<DownstreamState
>, int, std::string
> var
)
515 shared_ptr
<DownstreamState
> server
= nullptr;
516 auto states
= g_dstates
.getCopy();
517 if (auto* rem
= boost::get
<shared_ptr
<DownstreamState
>>(&var
)) {
520 else if (auto str
= boost::get
<std::string
>(&var
)) {
521 const auto uuid
= getUniqueID(*str
);
522 for (auto& state
: states
) {
523 if (state
->id
== uuid
) {
529 int idx
= boost::get
<int>(var
);
530 server
= states
.at(idx
);
533 throw std::runtime_error("unable to locate the requested server");
535 auto localPools
= g_pools
.getCopy();
536 for (const string
& poolName
: server
->pools
) {
537 removeServerFromPool(localPools
, poolName
, server
);
539 /* the server might also be in the default pool */
540 removeServerFromPool(localPools
, "", server
);
541 g_pools
.setState(localPools
);
542 states
.erase(remove(states
.begin(), states
.end(), server
), states
.end());
543 g_dstates
.setState(states
);
546 g_lua
.writeFunction("truncateTC", [](bool tc
) { setLuaSideEffect(); g_truncateTC
=tc
; });
547 g_lua
.writeFunction("fixupCase", [](bool fu
) { setLuaSideEffect(); g_fixupCase
=fu
; });
549 g_lua
.writeFunction("addACL", [](const std::string
& domain
) {
551 g_ACL
.modify([domain
](NetmaskGroup
& nmg
) { nmg
.addMask(domain
); });
554 g_lua
.writeFunction("rmACL", [](const std::string
& netmask
) {
556 g_ACL
.modify([netmask
](NetmaskGroup
& nmg
) { nmg
.deleteMask(netmask
); });
559 g_lua
.writeFunction("setLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
563 if (g_configurationDone
) {
564 g_outputBuffer
="setLocal cannot be used at runtime!\n";
567 bool reusePort
= false;
568 int tcpFastOpenQueueSize
= 0;
569 std::string interface
;
572 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
575 ComboAddress
loc(addr
, 53);
576 for (auto it
= g_frontends
.begin(); it
!= g_frontends
.end(); ) {
577 /* DoH, DoT and DNSCrypt frontends are separate */
578 if ((*it
)->tlsFrontend
== nullptr && (*it
)->dnscryptCtx
== nullptr && (*it
)->dohFrontend
== nullptr) {
579 it
= g_frontends
.erase(it
);
586 // only works pre-startup, so no sync necessary
587 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
588 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
590 catch(const std::exception
& e
) {
591 g_outputBuffer
="Error: "+string(e
.what())+"\n";
595 g_lua
.writeFunction("addLocal", [client
](const std::string
& addr
, boost::optional
<localbind_t
> vars
) {
599 if (g_configurationDone
) {
600 g_outputBuffer
="addLocal cannot be used at runtime!\n";
603 bool reusePort
= false;
604 int tcpFastOpenQueueSize
= 0;
605 std::string interface
;
608 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
611 ComboAddress
loc(addr
, 53);
612 // only works pre-startup, so no sync necessary
613 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
614 g_frontends
.push_back(std::unique_ptr
<ClientState
>(new ClientState(loc
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
)));
616 catch(std::exception
& e
) {
617 g_outputBuffer
="Error: "+string(e
.what())+"\n";
618 errlog("Error while trying to listen on %s: %s\n", addr
, string(e
.what()));
622 g_lua
.writeFunction("setACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
625 if(auto str
= boost::get
<string
>(&inp
)) {
628 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
629 nmg
.addMask(p
.second
);
634 g_lua
.writeFunction("showACL", []() {
635 setLuaNoSideEffect();
638 g_ACL
.getLocal()->toStringVector(&vec
);
640 for(const auto& s
: vec
)
641 g_outputBuffer
+=s
+"\n";
645 g_lua
.writeFunction("shutdown", []() {
647 sd_notify(0, "STOPPING=1");
648 #endif /* HAVE_SYSTEMD */
650 // Useful for debugging leaks, but might lead to race under load
651 // since other threads are still runing.
652 for(auto& frontend
: g_tlslocals
) {
657 google::protobuf::ShutdownProtobufLibrary();
658 #endif /* HAVE_PROTOBUF */
663 typedef std::unordered_map
<std::string
, boost::variant
<bool, std::string
> > showserversopts_t
;
665 g_lua
.writeFunction("showServers", [](boost::optional
<showserversopts_t
> vars
) {
666 setLuaNoSideEffect();
667 bool showUUIDs
= false;
669 if (vars
->count("showUUIDs")) {
670 showUUIDs
= boost::get
<bool>((*vars
)["showUUIDs"]);
677 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$11d %14%" );
678 // 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
679 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools" % "UUID") << endl
;
681 fmt
= boost::format("%1$-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%" );
682 ret
<< (fmt
% "#" % "Name" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Outstanding" % "Pools") << endl
;
685 uint64_t totQPS
{0}, totQueries
{0}, totDrops
{0};
687 auto states
= g_dstates
.getLocal();
688 for(const auto& s
: *states
) {
689 string status
= s
->getStatus();
691 for(auto& p
: s
->pools
) {
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
% s
->id
) << endl
;
701 ret
<< (fmt
% counter
% s
->getName() % s
->remote
.toStringWithPort() %
703 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
;
705 totQPS
+= s
->queryLoad
;
706 totQueries
+= s
->queries
.load();
707 totDrops
+= s
->reuseds
.load();
711 ret
<< (fmt
% "All" % "" % "" % ""
713 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" % "" ) << endl
;
715 ret
<< (fmt
% "All" % "" % "" % ""
717 (double)totQPS
% "" % "" % "" % totQueries
% totDrops
% "" % "" % "" % "" ) << endl
;
720 g_outputBuffer
=ret
.str();
721 } catch(std::exception
& e
) {
722 g_outputBuffer
=e
.what();
727 g_lua
.writeFunction("getServers", []() {
728 setLuaNoSideEffect();
729 vector
<pair
<int, std::shared_ptr
<DownstreamState
> > > ret
;
731 for(const auto& s
: g_dstates
.getCopy()) {
732 ret
.push_back(make_pair(count
++, s
));
737 g_lua
.writeFunction("getPoolServers", [](string pool
) {
738 return getDownstreamCandidates(g_pools
.getCopy(), pool
);
741 g_lua
.writeFunction("getServer", [client
](boost::variant
<unsigned int, std::string
> i
) {
743 return std::make_shared
<DownstreamState
>(ComboAddress());
745 auto states
= g_dstates
.getCopy();
746 if (auto str
= boost::get
<std::string
>(&i
)) {
747 const auto uuid
= getUniqueID(*str
);
748 for (auto& state
: states
) {
749 if (state
->id
== uuid
) {
754 else if (auto pos
= boost::get
<unsigned int>(&i
)) {
755 return states
.at(*pos
);
758 g_outputBuffer
= "Error: no rule matched\n";
759 return std::shared_ptr
<DownstreamState
>(nullptr);
762 g_lua
.writeFunction("carbonServer", [](const std::string
& address
, boost::optional
<string
> ourName
,
763 boost::optional
<unsigned int> interval
, boost::optional
<string
> namespace_name
,
764 boost::optional
<string
> instance_name
) {
766 auto ours
= g_carbon
.getCopy();
768 ComboAddress(address
, 2003),
769 (namespace_name
&& !namespace_name
->empty()) ? *namespace_name
: "dnsdist",
770 ourName
? *ourName
: "",
771 (instance_name
&& !instance_name
->empty()) ? *instance_name
: "main" ,
772 interval
? *interval
: 30
774 g_carbon
.setState(ours
);
777 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
) {
781 local
= ComboAddress(address
);
783 catch (const PDNSException
& e
) {
784 throw std::runtime_error(std::string("Error parsing the bind address for the webserver: ") + e
.reason
);
787 if (client
|| configCheck
) {
792 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
793 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
796 auto launch
=[sock
, local
, password
, apiKey
, customHeaders
]() {
797 setWebserverPassword(password
);
798 setWebserverAPIKey(apiKey
);
799 setWebserverCustomHeaders(customHeaders
);
800 thread
t(dnsdistWebserverThread
, sock
, local
);
804 g_launchWork
->push_back(launch
);
808 catch(std::exception
& e
) {
809 g_outputBuffer
="Unable to bind to webserver socket on " + local
.toStringWithPort() + ": " + e
.what();
810 errlog("Unable to bind to webserver socket on %s: %s", local
.toStringWithPort(), e
.what());
815 typedef std::unordered_map
<std::string
, boost::variant
<std::string
, std::map
<std::string
, std::string
>> > webserveropts_t
;
817 g_lua
.writeFunction("setWebserverConfig", [](boost::optional
<webserveropts_t
> vars
) {
823 if(vars
->count("password")) {
824 const std::string password
= boost::get
<std::string
>(vars
->at("password"));
826 setWebserverPassword(password
);
828 if(vars
->count("apiKey")) {
829 const std::string apiKey
= boost::get
<std::string
>(vars
->at("apiKey"));
831 setWebserverAPIKey(apiKey
);
833 if(vars
->count("customHeaders")) {
834 const boost::optional
<std::map
<std::string
, std::string
> > headers
= boost::get
<std::map
<std::string
, std::string
> >(vars
->at("customHeaders"));
836 setWebserverCustomHeaders(headers
);
840 g_lua
.writeFunction("controlSocket", [client
,configCheck
](const std::string
& str
) {
842 ComboAddress
local(str
, 5199);
844 if(client
|| configCheck
) {
845 g_serverControl
= local
;
849 g_consoleEnabled
= true;
850 #ifdef HAVE_LIBSODIUM
851 if (g_configurationDone
&& g_consoleKey
.empty()) {
852 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");
857 int sock
= SSocket(local
.sin4
.sin_family
, SOCK_STREAM
, 0);
858 SSetsockopt(sock
, SOL_SOCKET
, SO_REUSEADDR
, 1);
861 auto launch
=[sock
, local
]() {
862 thread
t(controlThread
, sock
, local
);
866 g_launchWork
->push_back(launch
);
871 catch(std::exception
& e
) {
872 g_outputBuffer
="Unable to bind to control socket on " + local
.toStringWithPort() + ": " + e
.what();
873 errlog("Unable to bind to control socket on %s: %s", local
.toStringWithPort(), e
.what());
877 g_lua
.writeFunction("addConsoleACL", [](const std::string
& netmask
) {
879 #ifndef HAVE_LIBSODIUM
880 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
883 g_consoleACL
.modify([netmask
](NetmaskGroup
& nmg
) { nmg
.addMask(netmask
); });
886 g_lua
.writeFunction("setConsoleACL", [](boost::variant
<string
,vector
<pair
<int, string
>>> inp
) {
889 #ifndef HAVE_LIBSODIUM
890 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
894 if(auto str
= boost::get
<string
>(&inp
)) {
897 else for(const auto& p
: boost::get
<vector
<pair
<int,string
>>>(inp
)) {
898 nmg
.addMask(p
.second
);
900 g_consoleACL
.setState(nmg
);
903 g_lua
.writeFunction("showConsoleACL", []() {
904 setLuaNoSideEffect();
906 #ifndef HAVE_LIBSODIUM
907 warnlog("Allowing remote access to the console while libsodium support has not been enabled is not secure, and will result in cleartext communications");
911 g_consoleACL
.getLocal()->toStringVector(&vec
);
913 for(const auto& s
: vec
) {
914 g_outputBuffer
+= s
+ "\n";
918 g_lua
.writeFunction("clearQueryCounters", []() {
919 unsigned int size
{0};
921 WriteLock
wl(&g_qcount
.queryLock
);
922 size
= g_qcount
.records
.size();
923 g_qcount
.records
.clear();
926 boost::format
fmt("%d records cleared from query counter buffer\n");
927 g_outputBuffer
= (fmt
% size
).str();
930 g_lua
.writeFunction("getQueryCounters", [](boost::optional
<unsigned int> optMax
) {
931 setLuaNoSideEffect();
932 ReadLock
rl(&g_qcount
.queryLock
);
933 g_outputBuffer
= "query counting is currently: ";
934 g_outputBuffer
+= g_qcount
.enabled
? "enabled" : "disabled";
935 g_outputBuffer
+= (boost::format(" (%d records in buffer)\n") % g_qcount
.records
.size()).str();
937 boost::format
fmt("%-3d %s: %d request(s)\n");
938 QueryCountRecords::iterator it
;
939 unsigned int max
= optMax
? *optMax
: 10;
940 unsigned int index
{1};
941 for(it
= g_qcount
.records
.begin(); it
!= g_qcount
.records
.end() && index
<= max
; ++it
, ++index
) {
942 g_outputBuffer
+= (fmt
% index
% it
->first
% it
->second
).str();
946 g_lua
.writeFunction("setQueryCount", [](bool enabled
) { g_qcount
.enabled
=enabled
; });
948 g_lua
.writeFunction("setQueryCountFilter", [](QueryCountFilter func
) {
949 g_qcount
.filter
= func
;
952 g_lua
.writeFunction("makeKey", []() {
953 setLuaNoSideEffect();
954 g_outputBuffer
="setKey("+newKey()+")\n";
957 g_lua
.writeFunction("setKey", [](const std::string
& key
) {
958 if(!g_configurationDone
&& ! g_consoleKey
.empty()) { // this makes sure the commandline -k key prevails over dnsdist.conf
959 return; // but later setKeys() trump the -k value again
961 #ifndef HAVE_LIBSODIUM
962 warnlog("Calling setKey() while libsodium support has not been enabled is not secure, and will result in cleartext communications");
967 if(B64Decode(key
, newkey
) < 0) {
968 g_outputBuffer
=string("Unable to decode ")+key
+" as Base64";
969 errlog("%s", g_outputBuffer
);
975 g_lua
.writeFunction("testCrypto", [](boost::optional
<string
> optTestMsg
)
977 setLuaNoSideEffect();
978 #ifdef HAVE_LIBSODIUM
983 testmsg
= *optTestMsg
;
986 testmsg
= "testStringForCryptoTests";
992 string encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
993 string decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
998 encrypted
= sodEncryptSym(testmsg
, g_consoleKey
, sn
);
999 decrypted
= sodDecryptSym(encrypted
, g_consoleKey
, sn2
);
1001 if(testmsg
== decrypted
)
1002 g_outputBuffer
="Everything is ok!\n";
1004 g_outputBuffer
="Crypto failed.. (the decoded value does not match the cleartext one)\n";
1006 catch(const std::exception
& e
) {
1007 g_outputBuffer
="Crypto failed: "+std::string(e
.what())+"\n";
1010 g_outputBuffer
="Crypto failed..\n";
1013 g_outputBuffer
="Crypto not available.\n";
1017 g_lua
.writeFunction("setTCPRecvTimeout", [](int timeout
) { g_tcpRecvTimeout
=timeout
; });
1019 g_lua
.writeFunction("setTCPSendTimeout", [](int timeout
) { g_tcpSendTimeout
=timeout
; });
1021 g_lua
.writeFunction("setUDPTimeout", [](int timeout
) { g_udpTimeout
=timeout
; });
1023 g_lua
.writeFunction("setMaxUDPOutstanding", [](uint16_t max
) {
1024 if (!g_configurationDone
) {
1025 g_maxOutstanding
= max
;
1027 g_outputBuffer
="Max UDP outstanding cannot be altered at runtime!\n";
1031 g_lua
.writeFunction("setMaxTCPClientThreads", [](uint64_t max
) {
1032 if (!g_configurationDone
) {
1033 g_maxTCPClientThreads
= max
;
1035 g_outputBuffer
="Maximum TCP client threads count cannot be altered at runtime!\n";
1039 g_lua
.writeFunction("setMaxTCPQueuedConnections", [](uint64_t max
) {
1040 if (!g_configurationDone
) {
1041 g_maxTCPQueuedConnections
= max
;
1043 g_outputBuffer
="The maximum number of queued TCP connections cannot be altered at runtime!\n";
1047 g_lua
.writeFunction("setMaxTCPQueriesPerConnection", [](size_t max
) {
1048 if (!g_configurationDone
) {
1049 g_maxTCPQueriesPerConn
= max
;
1051 g_outputBuffer
="The maximum number of queries per TCP connection cannot be altered at runtime!\n";
1055 g_lua
.writeFunction("setMaxTCPConnectionsPerClient", [](size_t max
) {
1056 if (!g_configurationDone
) {
1057 g_maxTCPConnectionsPerClient
= max
;
1059 g_outputBuffer
="The maximum number of TCP connection per client cannot be altered at runtime!\n";
1063 g_lua
.writeFunction("setMaxTCPConnectionDuration", [](size_t max
) {
1064 if (!g_configurationDone
) {
1065 g_maxTCPConnectionDuration
= max
;
1067 g_outputBuffer
="The maximum duration of a TCP connection cannot be altered at runtime!\n";
1071 g_lua
.writeFunction("setCacheCleaningDelay", [](uint32_t delay
) { g_cacheCleaningDelay
= delay
; });
1073 g_lua
.writeFunction("setCacheCleaningPercentage", [](uint16_t percentage
) { if (percentage
< 100) g_cacheCleaningPercentage
= percentage
; else g_cacheCleaningPercentage
= 100; });
1075 g_lua
.writeFunction("setECSSourcePrefixV4", [](uint16_t prefix
) { g_ECSSourcePrefixV4
=prefix
; });
1077 g_lua
.writeFunction("setECSSourcePrefixV6", [](uint16_t prefix
) { g_ECSSourcePrefixV6
=prefix
; });
1079 g_lua
.writeFunction("setECSOverride", [](bool override
) { g_ECSOverride
=override
; });
1081 g_lua
.writeFunction("setPreserveTrailingData", [](bool preserve
) { g_preserveTrailingData
= preserve
; });
1083 g_lua
.writeFunction("showDynBlocks", []() {
1084 setLuaNoSideEffect();
1085 auto slow
= g_dynblockNMG
.getCopy();
1086 struct timespec now
;
1088 boost::format
fmt("%-24s %8d %8d %-10s %-20s %s\n");
1089 g_outputBuffer
= (fmt
% "What" % "Seconds" % "Blocks" % "Warning" % "Action" % "Reason").str();
1090 for(const auto& e
: slow
) {
1091 if(now
< e
.second
.until
)
1092 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();
1094 auto slow2
= g_dynblockSMT
.getCopy();
1095 slow2
.visit([&now
, &fmt
](const SuffixMatchTree
<DynBlock
>& node
) {
1096 if(now
<node
.d_value
.until
) {
1097 string
dom("empty");
1098 if(!node
.d_value
.domain
.empty())
1099 dom
= node
.d_value
.domain
.toString();
1100 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();
1106 g_lua
.writeFunction("clearDynBlocks", []() {
1109 g_dynblockNMG
.setState(nmg
);
1110 SuffixMatchTree
<DynBlock
> smt
;
1111 g_dynblockSMT
.setState(smt
);
1114 g_lua
.writeFunction("addDynBlocks",
1115 [](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
) {
1120 auto slow
= g_dynblockNMG
.getCopy();
1121 struct timespec until
, now
;
1124 int actualSeconds
= seconds
? *seconds
: 10;
1125 until
.tv_sec
+= actualSeconds
;
1126 for(const auto& capair
: m
) {
1127 unsigned int count
= 0;
1128 auto got
= slow
.lookup(Netmask(capair
.first
));
1131 if(until
< got
->second
.until
) // had a longer policy
1133 if(now
< got
->second
.until
) // only inherit count on fresh query we are extending
1134 count
=got
->second
.blocks
;
1138 DynBlock db
{msg
,until
,DNSName(),(action
? *action
: DNSAction::Action::None
)};
1141 warnlog("Inserting dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
);
1142 slow
.insert(Netmask(capair
.first
)).second
=db
;
1144 g_dynblockNMG
.setState(slow
);
1147 g_lua
.writeFunction("addDynBlockSMT",
1148 [](const vector
<pair
<unsigned int, string
> >&names
, const std::string
& msg
, boost::optional
<int> seconds
, boost::optional
<DNSAction::Action
> action
) {
1149 if (names
.empty()) {
1153 auto slow
= g_dynblockSMT
.getCopy();
1154 struct timespec until
, now
;
1157 int actualSeconds
= seconds
? *seconds
: 10;
1158 until
.tv_sec
+= actualSeconds
;
1160 for(const auto& capair
: names
) {
1161 unsigned int count
= 0;
1162 DNSName
domain(capair
.second
);
1163 domain
.makeUsLowerCase();
1164 auto got
= slow
.lookup(domain
);
1167 if(until
< got
->until
) // had a longer policy
1169 if(now
< got
->until
) // only inherit count on fresh query we are extending
1175 DynBlock db
{msg
,until
,domain
,(action
? *action
: DNSAction::Action::None
)};
1178 warnlog("Inserting dynamic block for %s for %d seconds: %s", domain
, actualSeconds
, msg
);
1179 slow
.add(domain
, db
);
1181 g_dynblockSMT
.setState(slow
);
1184 g_lua
.writeFunction("setDynBlocksAction", [](DNSAction::Action action
) {
1185 if (!g_configurationDone
) {
1186 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
) {
1187 g_dynBlockAction
= action
;
1190 errlog("Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!");
1191 g_outputBuffer
="Dynamic blocks action can only be Drop, NoOp, NXDomain, Refused, Truncate or NoRecurse!\n";
1194 g_outputBuffer
="Dynamic blocks action cannot be altered at runtime!\n";
1198 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
) {
1199 if (g_configurationDone
) {
1200 g_outputBuffer
="addDNSCryptBind cannot be used at runtime!\n";
1203 #ifdef HAVE_DNSCRYPT
1204 bool reusePort
= false;
1205 int tcpFastOpenQueueSize
= 0;
1206 std::string interface
;
1208 std::vector
<DNSCryptContext::CertKeyPaths
> certKeys
;
1210 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1212 if (certFiles
.type() == typeid(std::string
) && keyFiles
.type() == typeid(std::string
)) {
1213 auto certFile
= boost::get
<std::string
>(certFiles
);
1214 auto keyFile
= boost::get
<std::string
>(keyFiles
);
1215 certKeys
.push_back({certFile
, keyFile
});
1217 else if (certFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>) && keyFiles
.type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1218 auto certFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(certFiles
);
1219 auto keyFilesVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(keyFiles
);
1220 if (certFilesVect
.size() == keyFilesVect
.size()) {
1221 for (size_t idx
= 0; idx
< certFilesVect
.size(); idx
++) {
1222 certKeys
.push_back({certFilesVect
.at(idx
).second
, keyFilesVect
.at(idx
).second
});
1226 errlog("Error, mismatching number of certificates and keys in call to addDNSCryptBind!");
1227 g_outputBuffer
="Error, mismatching number of certificates and keys in call to addDNSCryptBind()!";
1232 errlog("Error, mismatching number of certificates and keys in call to addDNSCryptBind()!");
1233 g_outputBuffer
="Error, mismatching number of certificates and keys in call to addDNSCryptBind()!";
1238 auto ctx
= std::make_shared
<DNSCryptContext
>(providerName
, certKeys
);
1241 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), false, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1242 cs
->dnscryptCtx
= ctx
;
1243 g_dnsCryptLocals
.push_back(ctx
);
1244 g_frontends
.push_back(std::move(cs
));
1247 cs
= std::unique_ptr
<ClientState
>(new ClientState(ComboAddress(addr
, 443), true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1248 cs
->dnscryptCtx
= ctx
;
1249 g_frontends
.push_back(std::move(cs
));
1251 catch(std::exception
& e
) {
1253 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1256 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1261 g_lua
.writeFunction("showDNSCryptBinds", []() {
1262 setLuaNoSideEffect();
1263 #ifdef HAVE_DNSCRYPT
1265 boost::format
fmt("%1$-3d %2% %|25t|%3$-20.20s");
1266 ret
<< (fmt
% "#" % "Address" % "Provider Name") << endl
;
1269 std::unordered_set
<std::shared_ptr
<DNSCryptContext
>> contexts
;
1270 for (const auto& frontend
: g_frontends
) {
1271 const std::shared_ptr
<DNSCryptContext
> ctx
= frontend
->dnscryptCtx
;
1272 if (!ctx
|| contexts
.count(ctx
) != 0) {
1275 contexts
.insert(ctx
);
1276 ret
<< (fmt
% idx
% frontend
->local
.toStringWithPort() % ctx
->getProviderName()) << endl
;
1280 g_outputBuffer
=ret
.str();
1282 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1286 g_lua
.writeFunction("getDNSCryptBind", [](size_t idx
) {
1287 setLuaNoSideEffect();
1288 #ifdef HAVE_DNSCRYPT
1289 std::shared_ptr
<DNSCryptContext
> ret
= nullptr;
1290 if (idx
< g_dnsCryptLocals
.size()) {
1291 ret
= g_dnsCryptLocals
.at(idx
);
1295 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1299 g_lua
.writeFunction("getDNSCryptBindCount", []() {
1300 setLuaNoSideEffect();
1301 return g_dnsCryptLocals
.size();
1304 g_lua
.writeFunction("generateDNSCryptProviderKeys", [client
](const std::string
& publicKeyFile
, const std::string privateKeyFile
) {
1305 setLuaNoSideEffect();
1306 #ifdef HAVE_DNSCRYPT
1310 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1311 unsigned char privateKey
[DNSCRYPT_PROVIDER_PRIVATE_KEY_SIZE
];
1312 sodium_mlock(privateKey
, sizeof(privateKey
));
1315 DNSCryptContext::generateProviderKeys(publicKey
, privateKey
);
1317 ofstream
pubKStream(publicKeyFile
);
1318 pubKStream
.write((char*) publicKey
, sizeof(publicKey
));
1321 ofstream
privKStream(privateKeyFile
);
1322 privKStream
.write((char*) privateKey
, sizeof(privateKey
));
1323 privKStream
.close();
1325 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1327 catch(std::exception
& e
) {
1329 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1332 sodium_memzero(privateKey
, sizeof(privateKey
));
1333 sodium_munlock(privateKey
, sizeof(privateKey
));
1335 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1339 g_lua
.writeFunction("printDNSCryptProviderFingerprint", [](const std::string
& publicKeyFile
) {
1340 setLuaNoSideEffect();
1341 #ifdef HAVE_DNSCRYPT
1342 unsigned char publicKey
[DNSCRYPT_PROVIDER_PUBLIC_KEY_SIZE
];
1345 ifstream
file(publicKeyFile
);
1346 file
.read((char *) &publicKey
, sizeof(publicKey
));
1349 throw std::runtime_error("Invalid dnscrypt provider public key file " + publicKeyFile
);
1352 g_outputBuffer
="Provider fingerprint is: " + DNSCryptContext::getProviderFingerprint(publicKey
) + "\n";
1354 catch(std::exception
& e
) {
1356 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1359 g_outputBuffer
="Error: DNSCrypt support is not enabled.\n";
1363 #ifdef HAVE_DNSCRYPT
1364 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
) {
1365 setLuaNoSideEffect();
1369 DNSCryptPrivateKey privateKey
;
1373 if (generateDNSCryptCertificate(providerPrivateKeyFile
, serial
, begin
, end
, version
? *version
: DNSCryptExchangeVersion::VERSION1
, cert
, privateKey
)) {
1374 privateKey
.saveToFile(privateKeyFile
);
1375 DNSCryptContext::saveCertFromFile(cert
, certificateFile
);
1378 catch(const std::exception
& e
) {
1380 g_outputBuffer
="Error: "+string(e
.what())+"\n";
1385 g_lua
.writeFunction("showPools", []() {
1386 setLuaNoSideEffect();
1389 boost::format
fmt("%1$-20.20s %|25t|%2$20s %|25t|%3$20s %|50t|%4%" );
1391 ret
<< (fmt
% "Name" % "Cache" % "ServerPolicy" % "Servers" ) << endl
;
1393 const auto localPools
= g_pools
.getCopy();
1394 for (const auto& entry
: localPools
) {
1395 const string
& name
= entry
.first
;
1396 const std::shared_ptr
<ServerPool
> pool
= entry
.second
;
1397 string cache
= pool
->packetCache
!= nullptr ? pool
->packetCache
->toString() : "";
1398 string policy
= g_policy
.getLocal()->name
;
1399 if (pool
->policy
!= nullptr) {
1400 policy
= pool
->policy
->name
;
1404 for (const auto& server
: pool
->getServers()) {
1405 if (!servers
.empty()) {
1408 if (!server
.second
->getName().empty()) {
1409 servers
+= server
.second
->getName();
1412 servers
+= server
.second
->remote
.toStringWithPort();
1415 ret
<< (fmt
% name
% cache
% policy
% servers
) << endl
;
1417 g_outputBuffer
=ret
.str();
1418 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1421 g_lua
.writeFunction("getPool", [client
](const string
& poolName
) {
1423 return std::make_shared
<ServerPool
>();
1425 auto localPools
= g_pools
.getCopy();
1426 std::shared_ptr
<ServerPool
> pool
= createPoolIfNotExists(localPools
, poolName
);
1427 g_pools
.setState(localPools
);
1431 g_lua
.writeFunction("setVerboseHealthChecks", [](bool verbose
) { g_verboseHealthChecks
=verbose
; });
1432 g_lua
.writeFunction("setStaleCacheEntriesTTL", [](uint32_t ttl
) { g_staleCacheEntriesTTL
= ttl
; });
1434 g_lua
.writeFunction("showBinds", []() {
1435 setLuaNoSideEffect();
1438 boost::format
fmt("%1$-3d %2$-20.20s %|35t|%3$-20.20s %|57t|%4%" );
1440 ret
<< (fmt
% "#" % "Address" % "Protocol" % "Queries" ) << endl
;
1443 for (const auto& front
: g_frontends
) {
1444 ret
<< (fmt
% counter
% front
->local
.toStringWithPort() % front
->getType() % front
->queries
) << endl
;
1447 g_outputBuffer
=ret
.str();
1448 }catch(std::exception
& e
) { g_outputBuffer
=e
.what(); throw; }
1451 g_lua
.writeFunction("getBind", [](size_t num
) {
1452 setLuaNoSideEffect();
1453 ClientState
* ret
= nullptr;
1454 if(num
< g_frontends
.size()) {
1455 ret
=g_frontends
[num
].get();
1460 g_lua
.writeFunction("getBindCount", []() {
1461 setLuaNoSideEffect();
1462 return g_frontends
.size();
1465 g_lua
.writeFunction("help", [](boost::optional
<std::string
> command
) {
1466 setLuaNoSideEffect();
1467 g_outputBuffer
= "";
1468 for (const auto& keyword
: g_consoleKeywords
) {
1470 g_outputBuffer
+= keyword
.toString() + "\n";
1472 else if (keyword
.name
== command
) {
1473 g_outputBuffer
= keyword
.toString() + "\n";
1478 g_outputBuffer
= "Nothing found for " + *command
+ "\n";
1482 g_lua
.writeFunction("showVersion", []() {
1483 setLuaNoSideEffect();
1484 g_outputBuffer
= "dnsdist " + std::string(VERSION
) + "\n";
1487 g_lua
.writeFunction("showSecurityStatus", []() {
1488 setLuaNoSideEffect();
1489 g_outputBuffer
= std::to_string(g_stats
.securityStatus
) + "\n";
1493 g_lua
.writeFunction("setDefaultBPFFilter", [](std::shared_ptr
<BPFFilter
> bpf
) {
1494 if (g_configurationDone
) {
1495 g_outputBuffer
="setDefaultBPFFilter() cannot be used at runtime!\n";
1498 g_defaultBPFFilter
= bpf
;
1501 g_lua
.writeFunction("registerDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1503 g_dynBPFFilters
.push_back(dbpf
);
1507 g_lua
.writeFunction("unregisterDynBPFFilter", [](std::shared_ptr
<DynBPFFilter
> dbpf
) {
1509 for (auto it
= g_dynBPFFilters
.begin(); it
!= g_dynBPFFilters
.end(); it
++) {
1511 g_dynBPFFilters
.erase(it
);
1518 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
) {
1520 struct timespec until
, now
;
1521 clock_gettime(CLOCK_MONOTONIC
, &now
);
1523 int actualSeconds
= seconds
? *seconds
: 10;
1524 until
.tv_sec
+= actualSeconds
;
1525 for(const auto& capair
: m
) {
1526 if (dynbpf
->block(capair
.first
, until
)) {
1527 warnlog("Inserting eBPF dynamic block for %s for %d seconds: %s", capair
.first
.toString(), actualSeconds
, msg
? *msg
: "");
1532 #endif /* HAVE_EBPF */
1534 g_lua
.writeFunction
<std::unordered_map
<string
,uint64_t>()>("getStatisticsCounters", []() {
1535 setLuaNoSideEffect();
1536 std::unordered_map
<string
,uint64_t> res
;
1537 for(const auto& entry
: g_stats
.entries
) {
1538 if(const auto& val
= boost::get
<DNSDistStats::stat_t
*>(&entry
.second
))
1539 res
[entry
.first
] = (*val
)->load();
1544 g_lua
.writeFunction("includeDirectory", [](const std::string
& dirname
) {
1545 if (g_configurationDone
) {
1546 errlog("includeDirectory() cannot be used at runtime!");
1547 g_outputBuffer
="includeDirectory() cannot be used at runtime!\n";
1552 errlog("includeDirectory() cannot be used recursively!");
1553 g_outputBuffer
="includeDirectory() cannot be used recursively!\n";
1559 if (stat(dirname
.c_str(), &st
)) {
1560 errlog("The included directory %s does not exist!", dirname
.c_str());
1561 g_outputBuffer
="The included directory " + dirname
+ " does not exist!";
1565 if (!S_ISDIR(st
.st_mode
)) {
1566 errlog("The included directory %s is not a directory!", dirname
.c_str());
1567 g_outputBuffer
="The included directory " + dirname
+ " is not a directory!";
1573 std::list
<std::string
> files
;
1574 if (!(dirp
= opendir(dirname
.c_str()))) {
1575 errlog("Error opening the included directory %s!", dirname
.c_str());
1576 g_outputBuffer
="Error opening the included directory " + dirname
+ "!";
1580 while((ent
= readdir(dirp
)) != NULL
) {
1581 if (ent
->d_name
[0] == '.') {
1585 if (boost::ends_with(ent
->d_name
, ".conf")) {
1586 std::ostringstream namebuf
;
1587 namebuf
<< dirname
.c_str() << "/" << ent
->d_name
;
1589 if (stat(namebuf
.str().c_str(), &st
) || !S_ISREG(st
.st_mode
)) {
1593 files
.push_back(namebuf
.str());
1600 for (auto file
= files
.begin(); file
!= files
.end(); ++file
) {
1601 std::ifstream
ifs(*file
);
1603 warnlog("Unable to read configuration from '%s'", *file
);
1605 vinfolog("Read configuration from '%s'", *file
);
1608 g_lua
.executeCode(ifs
);
1614 g_lua
.writeFunction("setAPIWritable", [](bool writable
, boost::optional
<std::string
> apiConfigDir
) {
1616 g_apiReadWrite
= writable
;
1618 if (!(*apiConfigDir
).empty()) {
1619 g_apiConfigDirectory
= *apiConfigDir
;
1622 errlog("The API configuration directory value cannot be empty!");
1623 g_outputBuffer
="The API configuration directory value cannot be empty!";
1628 g_lua
.writeFunction("setServFailWhenNoServer", [](bool servfail
) {
1630 g_servFailOnNoPolicy
= servfail
;
1633 g_lua
.writeFunction("setRoundRobinFailOnNoServer", [](bool fail
) {
1635 g_roundrobinFailOnNoServer
= fail
;
1638 g_lua
.writeFunction("setConsistentHashingBalancingFactor", [](double factor
) {
1641 g_consistentHashBalancingFactor
= factor
;
1644 errlog("Invalid value passed to setConsistentHashingBalancingFactor()!");
1645 g_outputBuffer
="Invalid value passed to setConsistentHashingBalancingFactor()!\n";
1650 g_lua
.writeFunction("setRingBuffersSize", [](size_t capacity
, boost::optional
<size_t> numberOfShards
) {
1652 if (g_configurationDone
) {
1653 errlog("setRingBuffersSize() cannot be used at runtime!");
1654 g_outputBuffer
="setRingBuffersSize() cannot be used at runtime!\n";
1657 g_rings
.setCapacity(capacity
, numberOfShards
? *numberOfShards
: 1);
1660 g_lua
.writeFunction("setRingBuffersLockRetries", [](size_t retries
) {
1662 g_rings
.setNumberOfLockRetries(retries
);
1665 g_lua
.writeFunction("setWHashedPertubation", [](uint32_t pertub
) {
1667 g_hashperturb
= pertub
;
1670 g_lua
.writeFunction("setTCPUseSinglePipe", [](bool flag
) {
1671 if (g_configurationDone
) {
1672 g_outputBuffer
="setTCPUseSinglePipe() cannot be used at runtime!\n";
1676 g_useTCPSinglePipe
= flag
;
1679 g_lua
.writeFunction("snmpAgent", [client
,configCheck
](bool enableTraps
, boost::optional
<std::string
> masterSocket
) {
1680 if(client
|| configCheck
)
1682 #ifdef HAVE_NET_SNMP
1683 if (g_configurationDone
) {
1684 errlog("snmpAgent() cannot be used at runtime!");
1685 g_outputBuffer
="snmpAgent() cannot be used at runtime!\n";
1689 if (g_snmpEnabled
) {
1690 errlog("snmpAgent() cannot be used twice!");
1691 g_outputBuffer
="snmpAgent() cannot be used twice!\n";
1695 g_snmpEnabled
= true;
1696 g_snmpTrapsEnabled
= enableTraps
;
1697 g_snmpAgent
= new DNSDistSNMPAgent("dnsdist", masterSocket
? *masterSocket
: std::string());
1699 errlog("NET SNMP support is required to use snmpAgent()");
1700 g_outputBuffer
="NET SNMP support is required to use snmpAgent()\n";
1701 #endif /* HAVE_NET_SNMP */
1704 g_lua
.writeFunction("sendCustomTrap", [](const std::string
& str
) {
1705 if (g_snmpAgent
&& g_snmpTrapsEnabled
) {
1706 g_snmpAgent
->sendCustomTrap(str
);
1710 g_lua
.writeFunction("setServerPolicy", [](ServerPolicy policy
) {
1712 g_policy
.setState(policy
);
1715 g_lua
.writeFunction("setServerPolicyLua", [](string name
, ServerPolicy::policyfunc_t policy
) {
1717 g_policy
.setState(ServerPolicy
{name
, policy
, true});
1720 g_lua
.writeFunction("setServerPolicyLuaFFI", [](string name
, ServerPolicy::ffipolicyfunc_t policy
) {
1722 auto pol
= ServerPolicy(name
, policy
);
1723 g_policy
.setState(std::move(pol
));
1726 g_lua
.writeFunction("showServerPolicy", []() {
1728 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1731 g_lua
.writeFunction("setPoolServerPolicy", [](ServerPolicy policy
, string pool
) {
1733 auto localPools
= g_pools
.getCopy();
1734 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(policy
));
1735 g_pools
.setState(localPools
);
1738 g_lua
.writeFunction("setPoolServerPolicyLua", [](string name
, ServerPolicy::policyfunc_t policy
, string pool
) {
1740 auto localPools
= g_pools
.getCopy();
1741 setPoolPolicy(localPools
, pool
, std::make_shared
<ServerPolicy
>(ServerPolicy
{name
, policy
, true}));
1742 g_pools
.setState(localPools
);
1745 g_lua
.writeFunction("showPoolServerPolicy", [](string pool
) {
1747 auto localPools
= g_pools
.getCopy();
1748 auto poolObj
= getPool(localPools
, pool
);
1749 if (poolObj
->policy
== nullptr) {
1750 g_outputBuffer
=g_policy
.getLocal()->name
+"\n";
1752 g_outputBuffer
=poolObj
->policy
->name
+"\n";
1756 g_lua
.writeFunction("setTCPDownstreamCleanupInterval", [](uint16_t interval
) {
1758 g_downstreamTCPCleanupInterval
= interval
;
1761 g_lua
.writeFunction("setConsoleConnectionsLogging", [](bool enabled
) {
1762 g_logConsoleConnections
= enabled
;
1765 g_lua
.writeFunction("setConsoleOutputMaxMsgSize", [](uint32_t size
) {
1766 g_consoleOutputMsgMaxSize
= size
;
1769 g_lua
.writeFunction("setUDPMultipleMessagesVectorSize", [](size_t vSize
) {
1770 if (g_configurationDone
) {
1771 errlog("setUDPMultipleMessagesVectorSize() cannot be used at runtime!");
1772 g_outputBuffer
="setUDPMultipleMessagesVectorSize() cannot be used at runtime!\n";
1775 #if defined(HAVE_RECVMMSG) && defined(HAVE_SENDMMSG) && defined(MSG_WAITFORONE)
1777 g_udpVectorSize
= vSize
;
1779 errlog("recvmmsg() support is not available!");
1780 g_outputBuffer
="recvmmsg support is not available!\n";
1784 g_lua
.writeFunction("setAddEDNSToSelfGeneratedResponses", [](bool add
) {
1785 g_addEDNSToSelfGeneratedResponses
= add
;
1788 g_lua
.writeFunction("setPayloadSizeOnSelfGeneratedAnswers", [](uint16_t payloadSize
) {
1789 if (payloadSize
< 512) {
1790 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!");
1791 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too low, using 512 instead!";
1794 if (payloadSize
> s_udpIncomingBufferSize
) {
1795 warnlog("setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to %d instead!", s_udpIncomingBufferSize
);
1796 g_outputBuffer
="setPayloadSizeOnSelfGeneratedAnswers() is set too high, capping to " + std::to_string(s_udpIncomingBufferSize
) + " instead";
1797 payloadSize
= s_udpIncomingBufferSize
;
1799 g_PayloadSizeSelfGenAnswers
= payloadSize
;
1802 g_lua
.writeFunction("setSecurityPollSuffix", [](const std::string
& suffix
) {
1803 if (g_configurationDone
) {
1804 g_outputBuffer
="setSecurityPollSuffix() cannot be used at runtime!\n";
1808 g_secPollSuffix
= suffix
;
1811 g_lua
.writeFunction("setSecurityPollInterval", [](time_t newInterval
) {
1812 if (newInterval
<= 0) {
1813 warnlog("setSecurityPollInterval() should be > 0, skipping");
1814 g_outputBuffer
="setSecurityPollInterval() should be > 0, skipping";
1817 g_secPollInterval
= newInterval
;
1820 g_lua
.writeFunction("setSyslogFacility", [](int facility
) {
1822 if (g_configurationDone
) {
1823 g_outputBuffer
="setSyslogFacility cannot be used at runtime!\n";
1826 setSyslogFacility(facility
);
1829 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
) {
1833 #ifdef HAVE_DNS_OVER_HTTPS
1835 if (g_configurationDone
) {
1836 g_outputBuffer
="addDOHLocal cannot be used at runtime!\n";
1839 auto frontend
= std::make_shared
<DOHFrontend
>();
1841 if (certFiles
&& !certFiles
->empty() && keyFiles
&& !keyFiles
->empty()) {
1842 if (!loadTLSCertificateAndKeys("addDOHLocal", frontend
->d_tlsConfig
.d_certKeyPairs
, *certFiles
, *keyFiles
)) {
1846 frontend
->d_local
= ComboAddress(addr
, 443);
1849 frontend
->d_local
= ComboAddress(addr
, 80);
1850 infolog("No certificate provided for DoH endpoint %s, running in DNS over HTTP mode instead of DNS over HTTPS", frontend
->d_local
.toStringWithPort());
1854 if (urls
->type() == typeid(std::string
)) {
1855 frontend
->d_urls
.push_back(boost::get
<std::string
>(*urls
));
1857 else if (urls
->type() == typeid(std::vector
<std::pair
<int,std::string
>>)) {
1858 auto urlsVect
= boost::get
<std::vector
<std::pair
<int,std::string
>>>(*urls
);
1859 for(const auto& p
: urlsVect
) {
1860 frontend
->d_urls
.push_back(p
.second
);
1865 frontend
->d_urls
= {"/"};
1868 bool reusePort
= false;
1869 int tcpFastOpenQueueSize
= 0;
1870 std::string interface
;
1874 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
1876 if (vars
->count("idleTimeout")) {
1877 frontend
->d_idleTimeout
= boost::get
<int>((*vars
)["idleTimeout"]);
1880 if (vars
->count("serverTokens")) {
1881 frontend
->d_serverTokens
= boost::get
<const string
>((*vars
)["serverTokens"]);
1884 if (vars
->count("customResponseHeaders")) {
1885 for (auto const& headerMap
: boost::get
<std::map
<std::string
,std::string
>>((*vars
)["customResponseHeaders"])) {
1886 std::pair
<std::string
,std::string
> headerResponse
= std::make_pair(boost::to_lower_copy(headerMap
.first
), headerMap
.second
);
1887 frontend
->d_customResponseHeaders
.push_back(headerResponse
);
1891 if (vars
->count("sendCacheControlHeaders")) {
1892 frontend
->d_sendCacheControlHeaders
= boost::get
<bool>((*vars
)["sendCacheControlHeaders"]);
1895 parseTLSConfig(frontend
->d_tlsConfig
, "addDOHLocal", vars
);
1897 g_dohlocals
.push_back(frontend
);
1898 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_local
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
1899 cs
->dohFrontend
= frontend
;
1900 g_frontends
.push_back(std::move(cs
));
1902 throw std::runtime_error("addDOHLocal() called but DNS over HTTPS support is not present!");
1906 g_lua
.writeFunction("showDOHFrontends", []() {
1907 #ifdef HAVE_DNS_OVER_HTTPS
1908 setLuaNoSideEffect();
1911 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d %-15d");
1912 ret
<< (fmt
% "#" % "Address" % "HTTP" % "HTTP/1" % "HTTP/2" % "GET" % "POST" % "Bad" % "Errors" % "Redirects" % "Valid" % "# ticket keys" % "Rotation delay" % "Next rotation") << endl
;
1914 for (const auto& ctx
: g_dohlocals
) {
1915 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
;
1918 g_outputBuffer
= ret
.str();
1920 catch(const std::exception
& e
) {
1921 g_outputBuffer
= e
.what();
1925 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1929 g_lua
.writeFunction("showDOHResponseCodes", []() {
1930 #ifdef HAVE_DNS_OVER_HTTPS
1931 setLuaNoSideEffect();
1934 boost::format
fmt("%-3d %-20.20s %-15d %-15d %-15d %-15d %-15d %-15d");
1935 g_outputBuffer
= "\n- HTTP/1:\n\n";
1936 ret
<< (fmt
% "#" % "Address" % "200" % "400" % "403" % "500" % "502" % "Others" ) << endl
;
1938 for (const auto& ctx
: g_dohlocals
) {
1939 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
;
1942 g_outputBuffer
+= ret
.str();
1945 g_outputBuffer
+= "\n- HTTP/2:\n\n";
1946 ret
<< (fmt
% "#" % "Address" % "200" % "400" % "403" % "500" % "502" % "Others" ) << endl
;
1948 for (const auto& ctx
: g_dohlocals
) {
1949 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
;
1952 g_outputBuffer
+= ret
.str();
1954 catch(const std::exception
& e
) {
1955 g_outputBuffer
= e
.what();
1959 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1963 g_lua
.writeFunction("getDOHFrontend", [client
](size_t index
) {
1964 std::shared_ptr
<DOHFrontend
> result
= nullptr;
1968 #ifdef HAVE_DNS_OVER_HTTPS
1969 setLuaNoSideEffect();
1971 if (index
< g_dohlocals
.size()) {
1972 result
= g_dohlocals
.at(index
);
1975 errlog("Error: trying to get DOH frontend with index %zu but we only have %zu frontend(s)\n", index
, g_dohlocals
.size());
1976 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";
1979 catch(const std::exception
& e
) {
1980 g_outputBuffer
="Error while trying to get DOH frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
1981 errlog("Error while trying to get DOH frontend with index %zu: %s\n", index
, string(e
.what()));
1984 g_outputBuffer
="DNS over HTTPS support is not present!\n";
1989 g_lua
.writeFunction("getDOHFrontendCount", []() {
1990 setLuaNoSideEffect();
1991 return g_dohlocals
.size();
1994 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("reloadCertificates", [](std::shared_ptr
<DOHFrontend
> frontend
) {
1995 if (frontend
!= nullptr) {
1996 frontend
->reloadCertificates();
2000 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<DOHFrontend
> frontend
) {
2001 if (frontend
!= nullptr) {
2002 frontend
->rotateTicketsKey(time(nullptr));
2006 g_lua
.registerFunction
<void(std::shared_ptr
<DOHFrontend
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<DOHFrontend
> frontend
, const std::string
& file
) {
2007 if (frontend
!= nullptr) {
2008 frontend
->loadTicketsKeys(file
);
2012 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
) {
2013 if (frontend
!= nullptr) {
2014 std::vector
<std::shared_ptr
<DOHResponseMapEntry
>> newMap
;
2015 newMap
.reserve(map
.size());
2017 for (const auto& entry
: map
) {
2018 newMap
.push_back(entry
.second
);
2021 frontend
->d_responsesMap
= std::move(newMap
);
2025 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
) {
2029 #ifdef HAVE_DNS_OVER_TLS
2031 if (g_configurationDone
) {
2032 g_outputBuffer
="addTLSLocal cannot be used at runtime!\n";
2035 shared_ptr
<TLSFrontend
> frontend
= std::make_shared
<TLSFrontend
>();
2037 if (!loadTLSCertificateAndKeys("addTLSLocal", frontend
->d_tlsConfig
.d_certKeyPairs
, certFiles
, keyFiles
)) {
2041 bool reusePort
= false;
2042 int tcpFastOpenQueueSize
= 0;
2043 std::string interface
;
2047 parseLocalBindVars(vars
, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
);
2049 if (vars
->count("provider")) {
2050 frontend
->d_provider
= boost::get
<const string
>((*vars
)["provider"]);
2051 boost::algorithm::to_lower(frontend
->d_provider
);
2054 parseTLSConfig(frontend
->d_tlsConfig
, "addTLSLocal", vars
);
2058 frontend
->d_addr
= ComboAddress(addr
, 853);
2059 if (!frontend
->d_provider
.empty()) {
2060 vinfolog("Loading TLS provider '%s'", frontend
->d_provider
);
2064 vinfolog("Loading default TLS provider 'openssl'");
2066 vinfolog("Loading default TLS provider 'gnutls'");
2069 // only works pre-startup, so no sync necessary
2070 auto cs
= std::unique_ptr
<ClientState
>(new ClientState(frontend
->d_addr
, true, reusePort
, tcpFastOpenQueueSize
, interface
, cpus
));
2071 cs
->tlsFrontend
= frontend
;
2072 g_tlslocals
.push_back(cs
->tlsFrontend
);
2073 g_frontends
.push_back(std::move(cs
));
2075 catch(const std::exception
& e
) {
2076 g_outputBuffer
="Error: "+string(e
.what())+"\n";
2079 throw std::runtime_error("addTLSLocal() called but DNS over TLS support is not present!");
2083 g_lua
.writeFunction("showTLSContexts", []() {
2084 #ifdef HAVE_DNS_OVER_TLS
2085 setLuaNoSideEffect();
2088 boost::format
fmt("%1$-3d %2$-20.20s %|25t|%3$-14d %|40t|%4$-14d %|54t|%5$-21.21s");
2090 ret
<< (fmt
% "#" % "Address" % "# ticket keys" % "Rotation delay" % "Next rotation" ) << endl
;
2092 for (const auto& ctx
: g_tlslocals
) {
2093 ret
<< (fmt
% counter
% ctx
->d_addr
.toStringWithPort() % ctx
->getTicketsKeysCount() % ctx
->getTicketsKeyRotationDelay() % ctx
->getNextTicketsKeyRotation()) << endl
;
2096 g_outputBuffer
= ret
.str();
2098 catch(const std::exception
& e
) {
2099 g_outputBuffer
= e
.what();
2103 g_outputBuffer
="DNS over TLS support is not present!\n";
2107 g_lua
.writeFunction("getTLSContext", [](size_t index
) {
2108 std::shared_ptr
<TLSCtx
> result
= nullptr;
2109 #ifdef HAVE_DNS_OVER_TLS
2110 setLuaNoSideEffect();
2112 if (index
< g_tlslocals
.size()) {
2113 result
= g_tlslocals
.at(index
)->getContext();
2116 errlog("Error: trying to get TLS context with index %zu but we only have %zu context(s)\n", index
, g_tlslocals
.size());
2117 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";
2120 catch(const std::exception
& e
) {
2121 g_outputBuffer
="Error while trying to get TLS context with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
2122 errlog("Error while trying to get TLS context with index %zu: %s\n", index
, string(e
.what()));
2125 g_outputBuffer
="DNS over TLS support is not present!\n";
2130 g_lua
.writeFunction("getTLSFrontend", [](size_t index
) {
2131 std::shared_ptr
<TLSFrontend
> result
= nullptr;
2132 #ifdef HAVE_DNS_OVER_TLS
2133 setLuaNoSideEffect();
2135 if (index
< g_tlslocals
.size()) {
2136 result
= g_tlslocals
.at(index
);
2139 errlog("Error: trying to get TLS frontend with index %zu but we only have %zu frontends\n", index
, g_tlslocals
.size());
2140 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";
2143 catch(const std::exception
& e
) {
2144 g_outputBuffer
="Error while trying to get TLS frontend with index " + std::to_string(index
) + ": "+string(e
.what())+"\n";
2145 errlog("Error while trying to get TLS frontend with index %zu: %s\n", index
, string(e
.what()));
2148 g_outputBuffer
="DNS over TLS support is not present!\n";
2153 g_lua
.writeFunction("getTLSFrontendCount", []() {
2154 setLuaNoSideEffect();
2155 return g_tlslocals
.size();
2158 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)()>("rotateTicketsKey", [](std::shared_ptr
<TLSCtx
> ctx
) {
2159 if (ctx
!= nullptr) {
2160 ctx
->rotateTicketsKey(time(nullptr));
2164 g_lua
.registerFunction
<void(std::shared_ptr
<TLSCtx
>::*)(const std::string
&)>("loadTicketsKeys", [](std::shared_ptr
<TLSCtx
> ctx
, const std::string
& file
) {
2165 if (ctx
!= nullptr) {
2166 ctx
->loadTicketsKeys(file
);
2170 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
) {
2171 #ifdef HAVE_DNS_OVER_TLS
2172 if (loadTLSCertificateAndKeys("loadNewCertificatesAndKeys", frontend
->d_tlsConfig
.d_certKeyPairs
, certFiles
, keyFiles
)) {
2173 frontend
->setupTLS();
2178 g_lua
.writeFunction("reloadAllCertificates", []() {
2179 for (auto& frontend
: g_frontends
) {
2184 #ifdef HAVE_DNSCRYPT
2185 if (frontend
->dnscryptCtx
) {
2186 frontend
->dnscryptCtx
->reloadCertificates();
2188 #endif /* HAVE_DNSCRYPT */
2189 #ifdef HAVE_DNS_OVER_TLS
2190 if (frontend
->tlsFrontend
) {
2191 frontend
->tlsFrontend
->setupTLS();
2193 #endif /* HAVE_DNS_OVER_TLS */
2194 #ifdef HAVE_DNS_OVER_HTTPS
2195 if (frontend
->dohFrontend
) {
2196 frontend
->dohFrontend
->reloadCertificates();
2198 #endif /* HAVE_DNS_OVER_HTTPS */
2200 catch(const std::exception
& e
) {
2201 errlog("Error reloading certificates for frontend %s: %s", frontend
->local
.toStringWithPort(), e
.what());
2206 g_lua
.writeFunction("setAllowEmptyResponse", [](bool allow
) { g_allowEmptyResponse
=allow
; });
2208 #if defined(HAVE_LIBSSL) && defined(HAVE_OCSP_BASIC_SIGN)
2209 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
) {
2214 libssl_generate_ocsp_response(certFile
, caCert
, caKey
, outFile
, ndays
, nmin
);
2216 #endif /* HAVE_LIBSSL && HAVE_OCSP_BASIC_SIGN*/
2219 vector
<std::function
<void(void)>> setupLua(bool client
, bool configCheck
, const std::string
& config
)
2221 g_launchWork
= new vector
<std::function
<void(void)>>();
2224 setupLuaConfig(client
, configCheck
);
2225 setupLuaBindings(client
);
2226 setupLuaBindingsDNSCrypt();
2227 setupLuaBindingsDNSQuestion();
2228 setupLuaBindingsKVS(client
);
2229 setupLuaBindingsPacketCache();
2230 setupLuaBindingsProtoBuf(client
, configCheck
);
2231 setupLuaInspection();
2235 #ifdef LUAJIT_VERSION
2236 g_lua
.executeCode(getLuaFFIWrappers());
2239 std::ifstream
ifs(config
);
2241 warnlog("Unable to read configuration from '%s'", config
);
2243 vinfolog("Read configuration from '%s'", config
);
2245 g_lua
.executeCode(ifs
);
2247 auto ret
= *g_launchWork
;
2248 delete g_launchWork
;
2249 g_launchWork
= nullptr;