]>
Commit | Line | Data |
---|---|---|
12471842 PL |
1 | /* |
2 | * This file is part of PowerDNS or dnsdist. | |
3 | * Copyright -- PowerDNS.COM B.V. and its contributors | |
4 | * | |
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. | |
8 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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. | |
21 | */ | |
32cdc494 | 22 | #pragma once |
00a19ff7 | 23 | #include <string> |
aebb81e4 | 24 | #include <atomic> |
3897b9e1 | 25 | #include "utility.hh" |
00a19ff7 BH |
26 | #include "dns.hh" |
27 | #include "qtype.hh" | |
28 | #include <vector> | |
29 | #include <set> | |
9ea28e46 | 30 | #include <unordered_set> |
00a19ff7 | 31 | #include <map> |
eefd15f9 BH |
32 | #include <cmath> |
33 | #include <iostream> | |
34 | #include <utility> | |
c836dc19 | 35 | #include "misc.hh" |
00a19ff7 | 36 | #include "lwres.hh" |
4898a348 | 37 | #include <boost/optional.hpp> |
92011b8f | 38 | #include <boost/circular_buffer.hpp> |
d6d5dea7 | 39 | #include <boost/utility.hpp> |
1d5b3ce6 | 40 | #include "sstuff.hh" |
9fdf67d5 | 41 | #include "recursor_cache.hh" |
16beeaa4 | 42 | #include "recpacketcache.hh" |
1d5b3ce6 | 43 | #include <boost/tuple/tuple.hpp> |
71dea98d | 44 | #include <boost/optional.hpp> |
1d5b3ce6 BH |
45 | #include <boost/tuple/tuple_comparison.hpp> |
46 | #include "mtasker.hh" | |
a9af3782 | 47 | #include "iputils.hh" |
849fe8d2 | 48 | #include "validate.hh" |
b40562da | 49 | #include "ednssubnet.hh" |
644dd1da | 50 | #include "filterpo.hh" |
39ce10b2 | 51 | #include "negcache.hh" |
644dd1da | 52 | |
20642494 | 53 | #ifdef HAVE_CONFIG_H |
4898a348 | 54 | #include "config.h" |
20642494 PL |
55 | #endif |
56 | ||
4898a348 RG |
57 | #ifdef HAVE_PROTOBUF |
58 | #include <boost/uuid/uuid.hpp> | |
59 | #include <boost/uuid/uuid_generators.hpp> | |
60 | #endif | |
61 | ||
a3e7b735 | 62 | class RecursorLua4; |
620db2c8 | 63 | |
fa1b87ff PL |
64 | typedef map< |
65 | DNSName, | |
66 | pair< | |
67 | vector<ComboAddress>, | |
68 | bool | |
69 | > | |
70 | > NsSet; | |
49f076e8 | 71 | |
bb4bdbaf | 72 | template<class Thing> class Throttle : public boost::noncopyable |
49f076e8 BH |
73 | { |
74 | public: | |
75 | Throttle() | |
76 | { | |
77 | d_limit=3; | |
78 | d_ttl=60; | |
79 | d_last_clean=time(0); | |
80 | } | |
87da00e7 | 81 | bool shouldThrottle(time_t now, const Thing& t) |
49f076e8 | 82 | { |
cd7bf56b | 83 | if(now > d_last_clean + 300 ) { |
bb4bdbaf | 84 | |
49f076e8 | 85 | d_last_clean=now; |
594c2ee7 | 86 | for(typename cont_t::iterator i=d_cont.begin();i!=d_cont.end();) { |
4957a608 BH |
87 | if( i->second.ttd < now) { |
88 | d_cont.erase(i++); | |
89 | } | |
90 | else | |
91 | ++i; | |
594c2ee7 | 92 | } |
49f076e8 BH |
93 | } |
94 | ||
49f076e8 BH |
95 | typename cont_t::iterator i=d_cont.find(t); |
96 | if(i==d_cont.end()) | |
97 | return false; | |
ccb07d93 | 98 | if(now > i->second.ttd || i->second.count == 0) { |
49f076e8 | 99 | d_cont.erase(i); |
139c2911 | 100 | return false; |
49f076e8 | 101 | } |
ccb07d93 | 102 | i->second.count--; |
014c60c3 BH |
103 | |
104 | return true; // still listed, still blocked | |
49f076e8 | 105 | } |
3ddb9247 | 106 | void throttle(time_t now, const Thing& t, time_t ttl=0, unsigned int tries=0) |
49f076e8 BH |
107 | { |
108 | typename cont_t::iterator i=d_cont.find(t); | |
87da00e7 | 109 | entry e={ now+(ttl ? ttl : d_ttl), tries ? tries : d_limit}; |
49f076e8 | 110 | |
c214232f | 111 | if(i==d_cont.end()) { |
49f076e8 | 112 | d_cont[t]=e; |
3ddb9247 PD |
113 | } |
114 | else if(i->second.ttd > e.ttd || (i->second.count) < e.count) | |
c214232f | 115 | d_cont[t]=e; |
8a5602d4 | 116 | } |
3ddb9247 | 117 | |
30ee601a | 118 | unsigned int size() const |
8a5602d4 | 119 | { |
705f31ae | 120 | return (unsigned int)d_cont.size(); |
49f076e8 | 121 | } |
30ee601a RG |
122 | |
123 | void clear() | |
124 | { | |
125 | d_cont.clear(); | |
126 | } | |
49f076e8 | 127 | private: |
b747bce8 AT |
128 | unsigned int d_limit; |
129 | time_t d_ttl; | |
49f076e8 | 130 | time_t d_last_clean; |
3ddb9247 | 131 | struct entry |
49f076e8 BH |
132 | { |
133 | time_t ttd; | |
b747bce8 | 134 | unsigned int count; |
49f076e8 BH |
135 | }; |
136 | typedef map<Thing,entry> cont_t; | |
137 | cont_t d_cont; | |
138 | }; | |
139 | ||
140 | ||
eefd15f9 | 141 | /** Class that implements a decaying EWMA. |
36c5ee42 | 142 | This class keeps an exponentially weighted moving average which, additionally, decays over time. |
eefd15f9 BH |
143 | The decaying is only done on get. |
144 | */ | |
145 | class DecayingEwma | |
146 | { | |
147 | public: | |
3ddb9247 | 148 | DecayingEwma() : d_val(0.0) |
71dea98d BH |
149 | { |
150 | d_needinit=true; | |
118dcc93 | 151 | d_last.tv_sec = d_last.tv_usec = 0; |
71dea98d | 152 | d_lastget=d_last; |
36c5ee42 | 153 | } |
d6d5dea7 | 154 | |
71dea98d | 155 | DecayingEwma(const DecayingEwma& orig) : d_last(orig.d_last), d_lastget(orig.d_lastget), d_val(orig.d_val), d_needinit(orig.d_needinit) |
eefd15f9 | 156 | { |
71dea98d | 157 | } |
d6d5dea7 | 158 | |
a712cb56 | 159 | void submit(int val, const struct timeval* tv) |
71dea98d | 160 | { |
a712cb56 | 161 | struct timeval now=*tv; |
71dea98d BH |
162 | |
163 | if(d_needinit) { | |
164 | d_last=now; | |
21f0f88b | 165 | d_lastget=now; |
71dea98d | 166 | d_needinit=false; |
21f0f88b | 167 | d_val = val; |
71dea98d | 168 | } |
21f0f88b BH |
169 | else { |
170 | float diff= makeFloat(d_last - now); | |
71dea98d | 171 | |
21f0f88b BH |
172 | d_last=now; |
173 | double factor=exp(diff)/2.0; // might be '0.5', or 0.0001 | |
3ddb9247 | 174 | d_val=(float)((1-factor)*val+ (float)factor*d_val); |
21f0f88b | 175 | } |
eefd15f9 | 176 | } |
d6d5dea7 | 177 | |
a712cb56 | 178 | double get(const struct timeval* tv) |
71dea98d | 179 | { |
a712cb56 | 180 | struct timeval now=*tv; |
71dea98d | 181 | float diff=makeFloat(d_lastget-now); |
36c5ee42 | 182 | d_lastget=now; |
705f31ae | 183 | float factor=exp(diff/60.0f); // is 1.0 or less |
eefd15f9 BH |
184 | return d_val*=factor; |
185 | } | |
186 | ||
30ee601a | 187 | double peek(void) const |
a82ce718 PD |
188 | { |
189 | return d_val; | |
190 | } | |
191 | ||
996c89cc | 192 | bool stale(time_t limit) const |
9fdf67d5 | 193 | { |
71dea98d | 194 | return limit > d_lastget.tv_sec; |
9fdf67d5 BH |
195 | } |
196 | ||
eefd15f9 | 197 | private: |
71dea98d BH |
198 | struct timeval d_last; // stores time |
199 | struct timeval d_lastget; // stores time | |
200 | float d_val; | |
201 | bool d_needinit; | |
202 | }; | |
203 | ||
628e2c7b PA |
204 | template<class Thing> class Counters : public boost::noncopyable |
205 | { | |
206 | public: | |
207 | Counters() | |
208 | { | |
209 | } | |
30ee601a | 210 | unsigned long value(const Thing& t) const |
628e2c7b | 211 | { |
30ee601a | 212 | typename cont_t::const_iterator i=d_cont.find(t); |
628e2c7b PA |
213 | |
214 | if(i==d_cont.end()) { | |
215 | return 0; | |
216 | } | |
217 | return (unsigned long)i->second; | |
218 | } | |
219 | unsigned long incr(const Thing& t) | |
220 | { | |
221 | typename cont_t::iterator i=d_cont.find(t); | |
222 | ||
223 | if(i==d_cont.end()) { | |
224 | d_cont[t]=1; | |
225 | return 1; | |
226 | } | |
227 | else { | |
228 | if (i->second < std::numeric_limits<unsigned long>::max()) | |
229 | i->second++; | |
230 | return (unsigned long)i->second; | |
231 | } | |
232 | } | |
233 | unsigned long decr(const Thing& t) | |
234 | { | |
235 | typename cont_t::iterator i=d_cont.find(t); | |
236 | ||
237 | if(i!=d_cont.end() && --i->second == 0) { | |
238 | d_cont.erase(i); | |
239 | return 0; | |
240 | } else | |
241 | return (unsigned long)i->second; | |
242 | } | |
243 | void clear(const Thing& t) | |
244 | { | |
245 | typename cont_t::iterator i=d_cont.find(t); | |
246 | ||
247 | if(i!=d_cont.end()) { | |
248 | d_cont.erase(i); | |
249 | } | |
250 | } | |
30ee601a RG |
251 | void clear() |
252 | { | |
253 | d_cont.clear(); | |
254 | } | |
255 | size_t size() const | |
406f46f9 | 256 | { |
257 | return d_cont.size(); | |
258 | } | |
628e2c7b PA |
259 | private: |
260 | typedef map<Thing,unsigned long> cont_t; | |
261 | cont_t d_cont; | |
262 | }; | |
263 | ||
71dea98d | 264 | |
bb4bdbaf | 265 | class SyncRes : public boost::noncopyable |
00a19ff7 BH |
266 | { |
267 | public: | |
3ddb9247 | 268 | enum LogMode { LogNone, Log, Store}; |
deca7d8f | 269 | typedef std::function<int(const ComboAddress& ip, const DNSName& qdomain, int qtype, bool doTCP, bool sendRDQuery, int EDNS0Level, struct timeval* now, boost::optional<Netmask>& srcmask, boost::optional<const ResolveContext&> context, std::shared_ptr<RemoteLogger> outgoingLogger, LWResult *lwr, bool* chained)> asyncresolve_t; |
77499b05 | 270 | |
a712cb56 RG |
271 | struct EDNSStatus |
272 | { | |
273 | EDNSStatus() : mode(UNKNOWN), modeSetAt(0) {} | |
274 | enum EDNSMode { UNKNOWN=0, EDNSOK=1, EDNSIGNORANT=2, NOEDNS=3 } mode; | |
275 | time_t modeSetAt; | |
276 | }; | |
277 | ||
278 | //! This represents a number of decaying Ewmas, used to store performance per nameserver-name. | |
279 | /** Modelled to work mostly like the underlying DecayingEwma. After you've called get, | |
280 | d_best is filled out with the best address for this collection */ | |
281 | struct DecayingEwmaCollection | |
282 | { | |
283 | void submit(const ComboAddress& remote, int usecs, const struct timeval* now) | |
284 | { | |
0e4675a9 | 285 | d_collection[remote].submit(usecs, now); |
a712cb56 RG |
286 | } |
287 | ||
288 | double get(const struct timeval* now) | |
289 | { | |
290 | if(d_collection.empty()) | |
291 | return 0; | |
292 | double ret=std::numeric_limits<double>::max(); | |
293 | double tmp; | |
0e4675a9 RG |
294 | for (auto& entry : d_collection) { |
295 | if((tmp = entry.second.get(now)) < ret) { | |
a712cb56 | 296 | ret=tmp; |
0e4675a9 | 297 | d_best=entry.first; |
a712cb56 RG |
298 | } |
299 | } | |
300 | ||
301 | return ret; | |
302 | } | |
303 | ||
304 | bool stale(time_t limit) const | |
305 | { | |
0e4675a9 RG |
306 | for(const auto& entry : d_collection) |
307 | if(!entry.second.stale(limit)) | |
a712cb56 RG |
308 | return false; |
309 | return true; | |
310 | } | |
311 | ||
0e4675a9 RG |
312 | void purge(const std::map<ComboAddress, double>& keep) |
313 | { | |
314 | for (auto iter = d_collection.begin(); iter != d_collection.end(); ) { | |
315 | if (keep.find(iter->first) != keep.end()) { | |
316 | ++iter; | |
317 | } | |
318 | else { | |
319 | iter = d_collection.erase(iter); | |
320 | } | |
321 | } | |
322 | } | |
323 | ||
324 | typedef std::map<ComboAddress, DecayingEwma> collection_t; | |
a712cb56 RG |
325 | collection_t d_collection; |
326 | ComboAddress d_best; | |
327 | }; | |
328 | ||
329 | typedef map<DNSName, DecayingEwmaCollection> nsspeeds_t; | |
330 | typedef map<ComboAddress, EDNSStatus> ednsstatus_t; | |
331 | ||
1e332f68 PL |
332 | vState getDSRecords(const DNSName& zone, dsmap_t& ds, bool onlyTA, unsigned int depth, bool bogusOnNXD=true, bool* foundCut=nullptr); |
333 | ||
3337c2f7 | 334 | class AuthDomain |
a712cb56 | 335 | { |
3337c2f7 | 336 | public: |
a712cb56 RG |
337 | typedef multi_index_container < |
338 | DNSRecord, | |
339 | indexed_by < | |
340 | ordered_non_unique< | |
341 | composite_key< DNSRecord, | |
342 | member<DNSRecord, DNSName, &DNSRecord::d_name>, | |
343 | member<DNSRecord, uint16_t, &DNSRecord::d_type> | |
344 | >, | |
345 | composite_key_compare<std::less<DNSName>, std::less<uint16_t> > | |
346 | > | |
347 | > | |
348 | > records_t; | |
3337c2f7 | 349 | |
a712cb56 | 350 | records_t d_records; |
3337c2f7 RG |
351 | vector<ComboAddress> d_servers; |
352 | DNSName d_name; | |
353 | bool d_rdForward{false}; | |
354 | ||
355 | int getRecords(const DNSName& qname, uint16_t qtype, std::vector<DNSRecord>& records) const; | |
356 | bool isAuth() const | |
357 | { | |
358 | return d_servers.empty(); | |
359 | } | |
360 | bool isForward() const | |
361 | { | |
362 | return !isAuth(); | |
363 | } | |
364 | bool shouldRecurse() const | |
365 | { | |
366 | return d_rdForward; | |
367 | } | |
368 | const DNSName& getName() const | |
369 | { | |
370 | return d_name; | |
371 | } | |
372 | ||
373 | private: | |
374 | void addSOA(std::vector<DNSRecord>& records) const; | |
a712cb56 RG |
375 | }; |
376 | ||
377 | typedef map<DNSName, AuthDomain> domainmap_t; | |
378 | typedef Throttle<boost::tuple<ComboAddress,DNSName,uint16_t> > throttle_t; | |
379 | typedef Counters<ComboAddress> fails_t; | |
380 | ||
381 | struct ThreadLocalStorage { | |
382 | NegCache negcache; | |
383 | nsspeeds_t nsSpeeds; | |
384 | throttle_t throttle; | |
385 | ednsstatus_t ednsstatus; | |
386 | fails_t fails; | |
387 | std::shared_ptr<domainmap_t> domainmap; | |
388 | }; | |
389 | ||
9065eb05 RG |
390 | static void setDefaultLogMode(LogMode lm) |
391 | { | |
392 | s_lm = lm; | |
393 | } | |
394 | static void doEDNSDumpAndClose(int fd); | |
395 | static uint64_t doDumpNSSpeeds(int fd); | |
396 | static int getRootNS(struct timeval now, asyncresolve_t asyncCallback); | |
397 | static void clearDelegationOnly() | |
398 | { | |
399 | s_delegationOnly.clear(); | |
400 | } | |
401 | static void addDelegationOnly(const DNSName& name) | |
402 | { | |
403 | s_delegationOnly.insert(name); | |
404 | } | |
405 | static void addDontQuery(const std::string& mask) | |
406 | { | |
407 | if (!s_dontQuery) | |
408 | s_dontQuery = std::unique_ptr<NetmaskGroup>(new NetmaskGroup()); | |
bb4bdbaf | 409 | |
9065eb05 RG |
410 | s_dontQuery->addMask(mask); |
411 | } | |
412 | static void addDontQuery(const Netmask& mask) | |
413 | { | |
414 | if (!s_dontQuery) | |
415 | s_dontQuery = std::unique_ptr<NetmaskGroup>(new NetmaskGroup()); | |
416 | ||
417 | s_dontQuery->addMask(mask); | |
418 | } | |
419 | static void clearDontQuery() | |
420 | { | |
421 | s_dontQuery = nullptr; | |
422 | } | |
423 | static void parseEDNSSubnetWhitelist(const std::string& wlist); | |
2fe3354d CH |
424 | static void parseEDNSSubnetAddFor(const std::string& subnetlist); |
425 | static void addEDNSLocalSubnet(const std::string& subnet) | |
9065eb05 | 426 | { |
2fe3354d CH |
427 | s_ednslocalsubnets.addMask(subnet); |
428 | } | |
429 | static void addEDNSRemoteSubnet(const std::string& subnet) | |
430 | { | |
431 | s_ednsremotesubnets.addMask(subnet); | |
9065eb05 RG |
432 | } |
433 | static void addEDNSDomain(const DNSName& domain) | |
434 | { | |
435 | s_ednsdomains.add(domain); | |
436 | } | |
2fe3354d | 437 | static void clearEDNSLocalSubnets() |
9065eb05 | 438 | { |
2fe3354d CH |
439 | s_ednslocalsubnets.clear(); |
440 | } | |
441 | static void clearEDNSRemoteSubnets() | |
442 | { | |
443 | s_ednsremotesubnets.clear(); | |
9065eb05 RG |
444 | } |
445 | static void clearEDNSDomains() | |
446 | { | |
447 | s_ednsdomains = SuffixMatchNode(); | |
448 | } | |
a712cb56 RG |
449 | static void pruneNSSpeeds(time_t limit) |
450 | { | |
451 | for(auto i = t_sstorage.nsSpeeds.begin(), end = t_sstorage.nsSpeeds.end(); i != end; ) { | |
452 | if(i->second.stale(limit)) { | |
453 | i = t_sstorage.nsSpeeds.erase(i); | |
454 | } | |
455 | else { | |
456 | ++i; | |
457 | } | |
458 | } | |
459 | } | |
460 | static uint64_t getNSSpeedsSize() | |
461 | { | |
462 | return t_sstorage.nsSpeeds.size(); | |
463 | } | |
464 | static void submitNSSpeed(const DNSName& server, const ComboAddress& ca, uint32_t usec, const struct timeval* now) | |
465 | { | |
466 | t_sstorage.nsSpeeds[server].submit(ca, usec, now); | |
467 | } | |
468 | static void clearNSSpeeds() | |
469 | { | |
470 | t_sstorage.nsSpeeds.clear(); | |
471 | } | |
472 | static EDNSStatus::EDNSMode getEDNSStatus(const ComboAddress& server) | |
473 | { | |
474 | const auto& it = t_sstorage.ednsstatus.find(server); | |
475 | if (it == t_sstorage.ednsstatus.end()) | |
476 | return EDNSStatus::UNKNOWN; | |
477 | ||
478 | return it->second.mode; | |
479 | } | |
480 | static uint64_t getEDNSStatusesSize() | |
481 | { | |
482 | return t_sstorage.ednsstatus.size(); | |
483 | } | |
484 | static void clearEDNSStatuses() | |
485 | { | |
486 | t_sstorage.ednsstatus.clear(); | |
487 | } | |
488 | static uint64_t getThrottledServersSize() | |
489 | { | |
490 | return t_sstorage.throttle.size(); | |
491 | } | |
492 | static void clearThrottle() | |
493 | { | |
494 | t_sstorage.throttle.clear(); | |
495 | } | |
496 | static bool isThrottled(time_t now, const ComboAddress& server, const DNSName& target, uint16_t qtype) | |
497 | { | |
498 | return t_sstorage.throttle.shouldThrottle(now, boost::make_tuple(server, target, qtype)); | |
499 | } | |
500 | static bool isThrottled(time_t now, const ComboAddress& server) | |
501 | { | |
502 | return t_sstorage.throttle.shouldThrottle(now, boost::make_tuple(server, "", 0)); | |
503 | } | |
504 | static void doThrottle(time_t now, const ComboAddress& server, time_t duration, unsigned int tries) | |
505 | { | |
506 | t_sstorage.throttle.throttle(now, boost::make_tuple(server, "", 0), duration, tries); | |
507 | } | |
508 | static uint64_t getFailedServersSize() | |
509 | { | |
510 | return t_sstorage.fails.size(); | |
511 | } | |
512 | static void clearFailedServers() | |
513 | { | |
514 | t_sstorage.fails.clear(); | |
515 | } | |
516 | static unsigned long getServerFailsCount(const ComboAddress& server) | |
517 | { | |
518 | return t_sstorage.fails.value(server); | |
519 | } | |
520 | ||
521 | static void clearNegCache() | |
522 | { | |
523 | t_sstorage.negcache.clear(); | |
524 | } | |
525 | ||
526 | static uint64_t getNegCacheSize() | |
527 | { | |
528 | return t_sstorage.negcache.size(); | |
529 | } | |
530 | ||
531 | static void pruneNegCache(unsigned int maxEntries) | |
532 | { | |
533 | t_sstorage.negcache.prune(maxEntries); | |
534 | } | |
535 | ||
536 | static uint64_t wipeNegCache(const DNSName& name, bool subtree = false) | |
537 | { | |
538 | return t_sstorage.negcache.wipe(name, subtree); | |
539 | } | |
540 | ||
541 | static void setDomainMap(std::shared_ptr<domainmap_t> newMap) | |
542 | { | |
543 | t_sstorage.domainmap = newMap; | |
544 | } | |
545 | ||
546 | static const std::shared_ptr<domainmap_t> getDomainMap() | |
547 | { | |
548 | return t_sstorage.domainmap; | |
549 | } | |
9065eb05 | 550 | |
8a3a3822 RG |
551 | static void setECSScopeZeroAddress(const Netmask& scopeZeroMask) |
552 | { | |
553 | s_ecsScopeZero.source = scopeZeroMask; | |
554 | } | |
555 | ||
9065eb05 | 556 | explicit SyncRes(const struct timeval& now); |
30ee601a | 557 | |
e325f20c | 558 | int beginResolve(const DNSName &qname, const QType &qtype, uint16_t qclass, vector<DNSRecord>&ret); |
c836dc19 BH |
559 | void setId(int id) |
560 | { | |
77499b05 | 561 | if(doLog()) |
9fdf67d5 | 562 | d_prefix="["+itoa(id)+"] "; |
c836dc19 | 563 | } |
3ddb9247 PD |
564 | |
565 | void setLogMode(LogMode lm) | |
77499b05 BH |
566 | { |
567 | d_lm = lm; | |
568 | } | |
569 | ||
69cbdef9 | 570 | bool doLog() const |
c836dc19 | 571 | { |
3ddb9247 | 572 | return d_lm != LogNone; |
c836dc19 | 573 | } |
77499b05 | 574 | |
c836dc19 BH |
575 | void setCacheOnly(bool state=true) |
576 | { | |
577 | d_cacheonly=state; | |
578 | } | |
2188dcc3 BH |
579 | |
580 | void setDoEDNS0(bool state=true) | |
581 | { | |
582 | d_doEDNS0=state; | |
583 | } | |
584 | ||
30ee601a RG |
585 | void setDoDNSSEC(bool state=true) |
586 | { | |
587 | d_doDNSSEC=state; | |
588 | } | |
589 | ||
0c43f455 RG |
590 | void setDNSSECValidationRequested(bool requested=true) |
591 | { | |
592 | d_DNSSECValidationRequested = requested; | |
593 | } | |
594 | ||
595 | bool isDNSSECValidationRequested() const | |
596 | { | |
597 | return d_DNSSECValidationRequested; | |
598 | } | |
599 | ||
e1636f82 RG |
600 | bool shouldValidate() const |
601 | { | |
602 | return d_DNSSECValidationRequested && !d_wasOutOfBand; | |
603 | } | |
604 | ||
30ee601a RG |
605 | void setWantsRPZ(bool state=true) |
606 | { | |
607 | d_wantsRPZ=state; | |
608 | } | |
609 | ||
610 | bool getWantsRPZ() const | |
611 | { | |
612 | return d_wantsRPZ; | |
613 | } | |
614 | ||
77499b05 BH |
615 | string getTrace() const |
616 | { | |
617 | return d_trace.str(); | |
618 | } | |
619 | ||
a3e7b735 | 620 | void setLuaEngine(shared_ptr<RecursorLua4> pdl) |
3457a2a0 | 621 | { |
622 | d_pdl = pdl; | |
623 | } | |
624 | ||
3762e821 | 625 | bool wasVariable() const |
626 | { | |
627 | return d_wasVariable; | |
628 | } | |
3457a2a0 | 629 | |
9fc36e90 PL |
630 | bool wasOutOfBand() const |
631 | { | |
632 | return d_wasOutOfBand; | |
633 | } | |
634 | ||
30ee601a RG |
635 | struct timeval getNow() const |
636 | { | |
637 | return d_now; | |
638 | } | |
639 | ||
a672e9de PL |
640 | void setSkipCNAMECheck(bool skip = false) |
641 | { | |
642 | d_skipCNAMECheck = skip; | |
643 | } | |
644 | ||
2fe3354d | 645 | void setQuerySource(const ComboAddress& requestor, boost::optional<const EDNSSubnetOpts&> incomingECS); |
30ee601a RG |
646 | |
647 | #ifdef HAVE_PROTOBUF | |
648 | void setInitialRequestId(boost::optional<const boost::uuids::uuid&> initialRequestId) | |
649 | { | |
650 | d_initialRequestId = initialRequestId; | |
651 | } | |
63341e8d RG |
652 | |
653 | void setOutgoingProtobufServer(std::shared_ptr<RemoteLogger>& server) | |
654 | { | |
655 | d_outgoingProtobufServer = server; | |
656 | } | |
30ee601a RG |
657 | #endif |
658 | ||
659 | void setAsyncCallback(asyncresolve_t func) | |
660 | { | |
661 | d_asyncResolve = func; | |
662 | } | |
3ddb9247 | 663 | |
4d2be65d RG |
664 | vState getValidationState() const |
665 | { | |
666 | return d_queryValidationState; | |
667 | } | |
668 | ||
a712cb56 RG |
669 | static thread_local ThreadLocalStorage t_sstorage; |
670 | ||
aebb81e4 | 671 | static std::atomic<uint64_t> s_queries; |
672 | static std::atomic<uint64_t> s_outgoingtimeouts; | |
673 | static std::atomic<uint64_t> s_outgoing4timeouts; | |
674 | static std::atomic<uint64_t> s_outgoing6timeouts; | |
675 | static std::atomic<uint64_t> s_throttledqueries; | |
676 | static std::atomic<uint64_t> s_dontqueries; | |
e9a628a2 | 677 | static std::atomic<uint64_t> s_authzonequeries; |
aebb81e4 | 678 | static std::atomic<uint64_t> s_outqueries; |
679 | static std::atomic<uint64_t> s_tcpoutqueries; | |
680 | static std::atomic<uint64_t> s_nodelegated; | |
681 | static std::atomic<uint64_t> s_unreachables; | |
d6923beb | 682 | static std::atomic<uint64_t> s_ecsqueries; |
683 | static std::atomic<uint64_t> s_ecsresponses; | |
9065eb05 | 684 | |
9065eb05 RG |
685 | static string s_serverID; |
686 | static unsigned int s_minimumTTL; | |
687 | static unsigned int s_maxqperq; | |
688 | static unsigned int s_maxtotusec; | |
689 | static unsigned int s_maxdepth; | |
a9af3782 | 690 | static unsigned int s_maxnegttl; |
c3e753c7 | 691 | static unsigned int s_maxcachettl; |
1051f8a9 BH |
692 | static unsigned int s_packetcachettl; |
693 | static unsigned int s_packetcacheservfailttl; | |
628e2c7b PA |
694 | static unsigned int s_serverdownmaxfails; |
695 | static unsigned int s_serverdownthrottletime; | |
e9f9b8ec RG |
696 | static uint8_t s_ecsipv4limit; |
697 | static uint8_t s_ecsipv6limit; | |
9065eb05 RG |
698 | static bool s_doIPv6; |
699 | static bool s_noEDNSPing; | |
700 | static bool s_noEDNS; | |
701 | static bool s_rootNXTrust; | |
1051f8a9 | 702 | static bool s_nopacketcache; |
3ddb9247 | 703 | |
a712cb56 RG |
704 | std::unordered_map<std::string,bool> d_discardedPolicies; |
705 | DNSFilterEngine::Policy d_appliedPolicy; | |
f7b8cffa | 706 | unsigned int d_authzonequeries; |
a712cb56 RG |
707 | unsigned int d_outqueries; |
708 | unsigned int d_tcpoutqueries; | |
709 | unsigned int d_throttledqueries; | |
710 | unsigned int d_timeouts; | |
711 | unsigned int d_unreachables; | |
712 | unsigned int d_totUsec; | |
49a699c4 | 713 | |
00a19ff7 | 714 | private: |
2fe3354d CH |
715 | ComboAddress d_requestor; |
716 | ComboAddress d_cacheRemote; | |
a712cb56 | 717 | |
9065eb05 | 718 | static std::unordered_set<DNSName> s_delegationOnly; |
2fe3354d CH |
719 | static NetmaskGroup s_ednslocalsubnets; |
720 | static NetmaskGroup s_ednsremotesubnets; | |
9065eb05 | 721 | static SuffixMatchNode s_ednsdomains; |
8a3a3822 | 722 | static EDNSSubnetOpts s_ecsScopeZero; |
9065eb05 RG |
723 | static LogMode s_lm; |
724 | static std::unique_ptr<NetmaskGroup> s_dontQuery; | |
725 | ||
726 | struct GetBestNSAnswer | |
727 | { | |
728 | DNSName qname; | |
729 | set<pair<DNSName,DNSName> > bestns; | |
730 | uint8_t qtype; // only A and AAAA anyhow | |
731 | bool operator<(const GetBestNSAnswer &b) const | |
732 | { | |
733 | return boost::tie(qname, qtype, bestns) < | |
734 | boost::tie(b.qname, b.qtype, b.bestns); | |
735 | } | |
736 | }; | |
737 | ||
70b3fe7a RG |
738 | typedef std::map<DNSName,vState> zonesStates_t; |
739 | ||
fa1b87ff | 740 | int doResolveAt(NsSet &nameservers, DNSName auth, bool flawedNSSet, const DNSName &qname, const QType &qtype, vector<DNSRecord>&ret, |
51b6b728 | 741 | unsigned int depth, set<GetBestNSAnswer>&beenthere, vState& state); |
6dfff36f | 742 | bool doResolveAtThisIP(const std::string& prefix, const DNSName& qname, const QType& qtype, LWResult& lwr, boost::optional<Netmask>& ednsmask, const DNSName& auth, bool const sendRDQuery, const DNSName& nsName, const ComboAddress& remoteIP, bool doTCP, bool* truncated); |
51b6b728 | 743 | bool processAnswer(unsigned int depth, LWResult& lwr, const DNSName& qname, const QType& qtype, DNSName& auth, bool wasForwarded, const boost::optional<Netmask> ednsmask, bool sendRDQuery, NsSet &nameservers, std::vector<DNSRecord>& ret, const DNSFilterEngine& dfe, bool* gotNewServers, int* rcode, vState& state); |
6dfff36f | 744 | |
51b6b728 | 745 | int doResolve(const DNSName &qname, const QType &qtype, vector<DNSRecord>&ret, unsigned int depth, set<GetBestNSAnswer>& beenthere, vState& state); |
f7b8cffa | 746 | bool doOOBResolve(const AuthDomain& domain, const DNSName &qname, const QType &qtype, vector<DNSRecord>&ret, int& res); |
7c3398aa | 747 | bool doOOBResolve(const DNSName &qname, const QType &qtype, vector<DNSRecord>&ret, unsigned int depth, int &res); |
69cbdef9 | 748 | domainmap_t::const_iterator getBestAuthZone(DNSName* qname) const; |
e1636f82 RG |
749 | bool doCNAMECacheCheck(const DNSName &qname, const QType &qtype, vector<DNSRecord>&ret, unsigned int depth, int &res, vState& state, bool wasAuthZone); |
750 | bool doCacheCheck(const DNSName &qname, const DNSName& authname, bool wasForwardedOrAuthZone, bool wasAuthZone, const QType &qtype, vector<DNSRecord>&ret, unsigned int depth, int &res, vState& state); | |
7c3398aa RG |
751 | void getBestNSFromCache(const DNSName &qname, const QType &qtype, vector<DNSRecord>&bestns, bool* flawedNSSet, unsigned int depth, set<GetBestNSAnswer>& beenthere); |
752 | DNSName getBestNSNamesFromCache(const DNSName &qname, const QType &qtype, NsSet& nsset, bool* flawedNSSet, unsigned int depth, set<GetBestNSAnswer>&beenthere); | |
c5c066bf | 753 | |
fa1b87ff | 754 | inline vector<DNSName> shuffleInSpeedOrder(NsSet &nameservers, const string &prefix); |
cc11d7f4 | 755 | inline vector<ComboAddress> shuffleForwardSpeed(const vector<ComboAddress> &rnameservers, const string &prefix, const bool wasRd); |
69cbdef9 | 756 | bool moreSpecificThan(const DNSName& a, const DNSName &b) const; |
b4c8789a | 757 | vector<ComboAddress> getAddrs(const DNSName &qname, unsigned int depth, set<GetBestNSAnswer>& beenthere, bool cacheOnly); |
26ca3513 | 758 | |
69cbdef9 RG |
759 | bool nameserversBlockedByRPZ(const DNSFilterEngine& dfe, const NsSet& nameservers); |
760 | bool nameserverIPBlockedByRPZ(const DNSFilterEngine& dfe, const ComboAddress&); | |
26ca3513 RG |
761 | bool throttledOrBlocked(const std::string& prefix, const ComboAddress& remoteIP, const DNSName& qname, const QType& qtype, bool pierceDontQuery); |
762 | ||
b4c8789a | 763 | vector<ComboAddress> retrieveAddressesForNS(const std::string& prefix, const DNSName& qname, vector<DNSName >::const_iterator& tns, const unsigned int depth, set<GetBestNSAnswer>& beenthere, const vector<DNSName >& rnameservers, NsSet& nameservers, bool& sendRDQuery, bool& pierceDontQuery, bool& flawedNSSet, bool cacheOnly); |
e4894ce0 RG |
764 | RCode::rcodes_ updateCacheFromRecords(unsigned int depth, LWResult& lwr, const DNSName& qname, const QType& qtype, const DNSName& auth, bool wasForwarded, const boost::optional<Netmask>, vState& state, bool& needWildcardProof, unsigned int& wildcardLabelsCount); |
765 | bool processRecords(const std::string& prefix, const DNSName& qname, const QType& qtype, const DNSName& auth, LWResult& lwr, const bool sendRDQuery, vector<DNSRecord>& ret, set<DNSName>& nsset, DNSName& newtarget, DNSName& newauth, bool& realreferral, bool& negindic, vState& state, const bool needWildcardProof, const unsigned int wildcardLabelsCount); | |
26ca3513 | 766 | |
6dfff36f | 767 | bool doSpecialNamesResolve(const DNSName &qname, const QType &qtype, const uint16_t qclass, vector<DNSRecord> &ret); |
db50a7f4 | 768 | |
deca7d8f | 769 | int asyncresolveWrapper(const ComboAddress& ip, bool ednsMANDATORY, const DNSName& domain, int type, bool doTCP, bool sendRDQuery, struct timeval* now, boost::optional<Netmask>& srcmask, LWResult* res, bool* chained) const; |
30ee601a | 770 | |
2fe3354d | 771 | boost::optional<Netmask> getEDNSSubnetMask(const DNSName&dn, const ComboAddress& rem); |
e9f9b8ec | 772 | |
4d2be65d | 773 | bool validationEnabled() const; |
4d2be65d RG |
774 | uint32_t computeLowestTTD(const std::vector<DNSRecord>& records, const std::vector<std::shared_ptr<RRSIGRecordContent> >& signatures, uint32_t signaturesTTL) const; |
775 | void updateValidationState(vState& state, const vState stateUpdate); | |
51b6b728 RG |
776 | vState validateRecordsWithSigs(unsigned int depth, const DNSName& qname, const QType& qtype, const DNSName& name, const std::vector<DNSRecord>& records, const std::vector<std::shared_ptr<RRSIGRecordContent> >& signatures); |
777 | vState validateDNSKeys(const DNSName& zone, const std::vector<DNSRecord>& dnskeys, const std::vector<std::shared_ptr<RRSIGRecordContent> >& signatures, unsigned int depth); | |
51b6b728 | 778 | vState getDNSKeys(const DNSName& signer, skeyset_t& keys, unsigned int depth); |
28364e4b RG |
779 | dState getDenialValidationState(const NegCache::NegCacheEntry& ne, const vState state, const dState expectedState, bool referralToUnsigned); |
780 | void updateDenialValidationState(vState& neValidationState, const DNSName& neName, vState& state, const dState denialState, const dState expectedState, bool allowOptOut); | |
781 | void computeNegCacheValidationStatus(const NegCache::NegCacheEntry* ne, const DNSName& qname, const QType& qtype, const int res, vState& state, unsigned int depth); | |
4d2be65d | 782 | vState getTA(const DNSName& zone, dsmap_t& ds); |
0735b60f | 783 | bool haveExactValidationStatus(const DNSName& domain); |
5374b03b | 784 | vState getValidationStatus(const DNSName& subdomain, bool allowIndeterminate=true); |
70b3fe7a | 785 | |
c405e222 | 786 | bool lookForCut(const DNSName& qname, unsigned int depth, const vState existingState, vState& newState); |
51b6b728 | 787 | void computeZoneCuts(const DNSName& begin, const DNSName& end, unsigned int depth); |
4d2be65d | 788 | |
0b29b9c5 RG |
789 | void setUpdatingRootNS() |
790 | { | |
791 | d_updatingRootNS = true; | |
792 | } | |
793 | ||
51b6b728 | 794 | zonesStates_t d_cutStates; |
77499b05 | 795 | ostringstream d_trace; |
a3e7b735 | 796 | shared_ptr<RecursorLua4> d_pdl; |
2fe3354d | 797 | boost::optional<Netmask> d_outgoingECSNetwork; |
63341e8d | 798 | std::shared_ptr<RemoteLogger> d_outgoingProtobufServer{nullptr}; |
30ee601a RG |
799 | #ifdef HAVE_PROTOBUF |
800 | boost::optional<const boost::uuids::uuid&> d_initialRequestId; | |
801 | #endif | |
802 | asyncresolve_t d_asyncResolve{nullptr}; | |
803 | struct timeval d_now; | |
c836dc19 | 804 | string d_prefix; |
4d2be65d | 805 | vState d_queryValidationState{Indeterminate}; |
b88526ce PL |
806 | |
807 | /* When d_cacheonly is set to true, we will only check the cache. | |
808 | * This is set when the RD bit is unset in the incoming query | |
809 | */ | |
c836dc19 | 810 | bool d_cacheonly; |
30ee601a | 811 | bool d_doDNSSEC; |
0c43f455 | 812 | bool d_DNSSECValidationRequested{false}; |
30ee601a | 813 | bool d_doEDNS0{true}; |
24bb9b58 | 814 | bool d_requireAuthData{true}; |
30ee601a | 815 | bool d_skipCNAMECheck{false}; |
0b29b9c5 | 816 | bool d_updatingRootNS{false}; |
30ee601a RG |
817 | bool d_wantsRPZ{true}; |
818 | bool d_wasOutOfBand{false}; | |
819 | bool d_wasVariable{false}; | |
57769f13 | 820 | |
77499b05 | 821 | LogMode d_lm; |
00a19ff7 | 822 | }; |
ac0e821b | 823 | |
5c633640 | 824 | class Socket; |
a9af3782 | 825 | /* external functions, opaque to us */ |
5c633640 | 826 | int asendtcp(const string& data, Socket* sock); |
a683e8bd | 827 | int arecvtcp(string& data, size_t len, Socket* sock, bool incompleteOkay); |
1d5b3ce6 BH |
828 | |
829 | ||
830 | struct PacketID | |
831 | { | |
825fa717 | 832 | PacketID() : id(0), type(0), sock(0), inNeeded(0), inIncompleteOkay(false), outPos(0), nearMisses(0), fd(-1) |
67770277 | 833 | { |
d38e2ba9 | 834 | remote.reset(); |
67770277 | 835 | } |
1d5b3ce6 BH |
836 | |
837 | uint16_t id; // wait for a specific id/remote pair | |
91ffe057 | 838 | uint16_t type; // and this is its type |
996c89cc | 839 | ComboAddress remote; // this is the remote |
3ddb9247 | 840 | DNSName domain; // this is the question |
1d5b3ce6 BH |
841 | |
842 | Socket* sock; // or wait for an event on a TCP fd | |
1d5b3ce6 | 843 | string inMSG; // they'll go here |
a683e8bd | 844 | size_t inNeeded; // if this is set, we'll read until inNeeded bytes are read |
825fa717 | 845 | bool inIncompleteOkay; |
1d5b3ce6 BH |
846 | |
847 | string outMSG; // the outgoing message that needs to be sent | |
848 | string::size_type outPos; // how far we are along in the outMSG | |
849 | ||
96f81a93 BH |
850 | typedef set<uint16_t > chain_t; |
851 | mutable chain_t chain; | |
91ffe057 | 852 | mutable uint32_t nearMisses; // number of near misses - host correct, id wrong |
4ef015cd | 853 | int fd; |
35ce8576 | 854 | |
1d5b3ce6 BH |
855 | bool operator<(const PacketID& b) const |
856 | { | |
857 | int ourSock= sock ? sock->getHandle() : 0; | |
858 | int bSock = b.sock ? b.sock->getHandle() : 0; | |
787e5eab | 859 | if( tie(remote, ourSock, type) < tie(b.remote, bSock, b.type)) |
0d5f0a9f | 860 | return true; |
787e5eab | 861 | if( tie(remote, ourSock, type) > tie(b.remote, bSock, b.type)) |
0d5f0a9f BH |
862 | return false; |
863 | ||
c5c066bf | 864 | return tie(domain, fd, id) < tie(b.domain, b.fd, b.id); |
1d5b3ce6 BH |
865 | } |
866 | }; | |
867 | ||
3ddb9247 | 868 | struct PacketIDBirthdayCompare: public std::binary_function<PacketID, PacketID, bool> |
96f81a93 BH |
869 | { |
870 | bool operator()(const PacketID& a, const PacketID& b) const | |
871 | { | |
872 | int ourSock= a.sock ? a.sock->getHandle() : 0; | |
873 | int bSock = b.sock ? b.sock->getHandle() : 0; | |
787e5eab | 874 | if( tie(a.remote, ourSock, a.type) < tie(b.remote, bSock, b.type)) |
96f81a93 | 875 | return true; |
787e5eab | 876 | if( tie(a.remote, ourSock, a.type) > tie(b.remote, bSock, b.type)) |
96f81a93 BH |
877 | return false; |
878 | ||
72849e12 | 879 | return a.domain < b.domain; |
96f81a93 BH |
880 | } |
881 | }; | |
f26bf547 RG |
882 | extern thread_local std::unique_ptr<MemRecursorCache> t_RC; |
883 | extern thread_local std::unique_ptr<RecursorPacketCache> t_packetCache; | |
d2392145 | 884 | typedef MTasker<PacketID,string> MT_t; |
f165a1f4 | 885 | MT_t* getMT(); |
1d5b3ce6 BH |
886 | |
887 | struct RecursorStats | |
888 | { | |
aebb81e4 | 889 | std::atomic<uint64_t> servFails; |
890 | std::atomic<uint64_t> nxDomains; | |
891 | std::atomic<uint64_t> noErrors; | |
892 | std::atomic<uint64_t> answers0_1, answers1_10, answers10_100, answers100_1000, answersSlow; | |
893 | std::atomic<uint64_t> auth4Answers0_1, auth4Answers1_10, auth4Answers10_100, auth4Answers100_1000, auth4AnswersSlow; | |
894 | std::atomic<uint64_t> auth6Answers0_1, auth6Answers1_10, auth6Answers10_100, auth6Answers100_1000, auth6AnswersSlow; | |
19178da9 | 895 | std::atomic<uint64_t> ourtime0_1, ourtime1_2, ourtime2_4, ourtime4_8, ourtime8_16, ourtime16_32, ourtimeSlow; |
896 | double avgLatencyUsec{0}; | |
897 | double avgLatencyOursUsec{0}; | |
aebb81e4 | 898 | std::atomic<uint64_t> qcounter; // not increased for unauth packets |
899 | std::atomic<uint64_t> ipv6qcounter; | |
900 | std::atomic<uint64_t> tcpqcounter; | |
901 | std::atomic<uint64_t> unauthorizedUDP; // when this is increased, qcounter isn't | |
902 | std::atomic<uint64_t> unauthorizedTCP; // when this is increased, qcounter isn't | |
903 | std::atomic<uint64_t> policyDrops; | |
904 | std::atomic<uint64_t> tcpClientOverflow; | |
905 | std::atomic<uint64_t> clientParseError; | |
906 | std::atomic<uint64_t> serverParseError; | |
907 | std::atomic<uint64_t> tooOldDrops; | |
ba892c7f | 908 | std::atomic<uint64_t> truncatedDrops; |
cf8cda18 | 909 | std::atomic<uint64_t> queryPipeFullDrops; |
aebb81e4 | 910 | std::atomic<uint64_t> unexpectedCount; |
911 | std::atomic<uint64_t> caseMismatchCount; | |
912 | std::atomic<uint64_t> spoofCount; | |
913 | std::atomic<uint64_t> resourceLimits; | |
914 | std::atomic<uint64_t> overCapacityDrops; | |
915 | std::atomic<uint64_t> ipv6queries; | |
916 | std::atomic<uint64_t> chainResends; | |
917 | std::atomic<uint64_t> nsSetInvalidations; | |
918 | std::atomic<uint64_t> ednsPingMatches; | |
919 | std::atomic<uint64_t> ednsPingMismatches; | |
920 | std::atomic<uint64_t> noPingOutQueries, noEdnsOutQueries; | |
921 | std::atomic<uint64_t> packetCacheHits; | |
922 | std::atomic<uint64_t> noPacketError; | |
923 | std::atomic<uint64_t> ignoredCount; | |
5e3de507 | 924 | time_t startupTime; |
aebb81e4 | 925 | std::atomic<uint64_t> dnssecQueries; |
ec6eacbc | 926 | unsigned int maxMThreadStackUsage; |
849fe8d2 PL |
927 | std::atomic<uint64_t> dnssecValidations; // should be the sum of all dnssecResult* stats |
928 | std::map<vState, std::atomic<uint64_t> > dnssecResults; | |
7a25883a | 929 | std::map<DNSFilterEngine::PolicyKind, std::atomic<uint64_t> > policyResults; |
b3b5459d | 930 | }; |
996c89cc | 931 | |
0e408828 | 932 | //! represents a running TCP/IP client session |
cd989c87 | 933 | class TCPConnection : public boost::noncopyable |
0e408828 | 934 | { |
50a5ef72 | 935 | public: |
cd989c87 BH |
936 | TCPConnection(int fd, const ComboAddress& addr); |
937 | ~TCPConnection(); | |
3ddb9247 | 938 | |
30ee601a | 939 | int getFD() const |
cd989c87 BH |
940 | { |
941 | return d_fd; | |
942 | } | |
b841314c RG |
943 | enum stateenum {BYTE0, BYTE1, GETQUESTION, DONE} state{BYTE0}; |
944 | uint16_t qlen{0}; | |
945 | uint16_t bytesread{0}; | |
cd989c87 BH |
946 | const ComboAddress d_remote; |
947 | char data[65535]; // damn | |
fde296a3 | 948 | size_t queriesCount{0}; |
0e408828 | 949 | |
50a5ef72 | 950 | static unsigned int getCurrentConnections() { return s_currentConnections; } |
50a5ef72 | 951 | private: |
cd989c87 | 952 | const int d_fd; |
1bc9e6bd | 953 | static AtomicCounter s_currentConnections; //!< total number of current TCP connections |
0e408828 BH |
954 | }; |
955 | ||
44971ca0 PD |
956 | class ImmediateServFailException |
957 | { | |
958 | public: | |
959 | ImmediateServFailException(string r){reason=r;}; | |
960 | ||
961 | string reason; //! Print this to tell the user what went wrong | |
962 | }; | |
0e408828 | 963 | |
f635ed7b | 964 | typedef boost::circular_buffer<ComboAddress> addrringbuf_t; |
f26bf547 | 965 | extern thread_local std::unique_ptr<addrringbuf_t> t_servfailremotes, t_largeanswerremotes, t_remotes; |
a9af3782 | 966 | |
f26bf547 RG |
967 | extern thread_local std::unique_ptr<boost::circular_buffer<pair<DNSName,uint16_t> > > t_queryring, t_servfailqueryring; |
968 | extern thread_local std::shared_ptr<NetmaskGroup> t_allowFrom; | |
674cf0f6 | 969 | string doQueueReloadLuaScript(vector<string>::const_iterator begin, vector<string>::const_iterator end); |
77499b05 | 970 | string doTraceRegex(vector<string>::const_iterator begin, vector<string>::const_iterator end); |
18af64a8 | 971 | void parseACLs(); |
1d5b3ce6 | 972 | extern RecursorStats g_stats; |
c3828c03 | 973 | extern unsigned int g_numThreads; |
b33c2462 | 974 | extern uint16_t g_outgoingEDNSBufsize; |
a6f7f5fe | 975 | extern std::atomic<uint32_t> g_maxCacheEntries, g_maxPacketCacheEntries; |
c1c29961 | 976 | extern bool g_lowercaseOutgoing; |
12ce523e | 977 | |
978 | ||
ee1ada80 | 979 | std::string reloadAuthAndForwards(); |
c1d73d94 | 980 | ComboAddress parseIPAndPort(const std::string& input, uint16_t port); |
1652a63e | 981 | ComboAddress getQueryLocalAddress(int family, uint16_t port); |
3427fa8a | 982 | typedef boost::function<void*(void)> pipefunc_t; |
b4e76a18 | 983 | void broadcastFunction(const pipefunc_t& func); |
8171ab83 | 984 | void distributeAsyncFunction(const std::string& question, const pipefunc_t& func); |
3427fa8a | 985 | |
e325f20c | 986 | int directResolve(const DNSName& qname, const QType& qtype, int qclass, vector<DNSRecord>& ret); |
3427fa8a | 987 | |
b4e76a18 | 988 | template<class T> T broadcastAccFunction(const boost::function<T*()>& func); |
3427fa8a | 989 | |
9065eb05 | 990 | std::shared_ptr<SyncRes::domainmap_t> parseAuthAndForwards(); |
13034931 BH |
991 | uint64_t* pleaseGetNsSpeedsSize(); |
992 | uint64_t* pleaseGetCacheSize(); | |
993 | uint64_t* pleaseGetNegCacheSize(); | |
994 | uint64_t* pleaseGetCacheHits(); | |
995 | uint64_t* pleaseGetCacheMisses(); | |
996 | uint64_t* pleaseGetConcurrentQueries(); | |
997 | uint64_t* pleaseGetThrottleSize(); | |
16beeaa4 BH |
998 | uint64_t* pleaseGetPacketCacheHits(); |
999 | uint64_t* pleaseGetPacketCacheSize(); | |
86f3ca51 | 1000 | uint64_t* pleaseWipeCache(const DNSName& canon, bool subtree=false); |
1001 | uint64_t* pleaseWipePacketCache(const DNSName& canon, bool subtree); | |
1002 | uint64_t* pleaseWipeAndCountNegCache(const DNSName& canon, bool subtree=false); | |
2c78bd57 | 1003 | void doCarbonDump(void*); |
9065eb05 | 1004 | void primeHints(void); |
795215f2 | 1005 | |
f703f766 | 1006 | extern __thread struct timeval g_now; |
f3d6a5c5 | 1007 | |
4898a348 | 1008 | #ifdef HAVE_PROTOBUF |
f26bf547 | 1009 | extern thread_local std::unique_ptr<boost::uuids::random_generator> t_uuidGenerator; |
4898a348 | 1010 | #endif |