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3696224d | 1 | /* |
6edbf68a PL |
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 | */ | |
870a0fe4 AT |
22 | #ifdef HAVE_CONFIG_H |
23 | #include "config.h" | |
24 | #endif | |
38fdb531 | 25 | |
3696224d | 26 | #include "utility.hh" |
d7652f3a BH |
27 | #include "dnssecinfra.hh" |
28 | #include "dnsseckeeper.hh" | |
29 | #include "base32.hh" | |
3696224d BH |
30 | #include <errno.h> |
31 | #include "communicator.hh" | |
32 | #include <set> | |
33 | #include <boost/utility.hpp> | |
34 | #include "dnsbackend.hh" | |
35 | #include "ueberbackend.hh" | |
36 | #include "packethandler.hh" | |
37 | #include "resolver.hh" | |
38 | #include "logger.hh" | |
39 | #include "dns.hh" | |
40 | #include "arguments.hh" | |
38fdb531 | 41 | #include "auth-caches.hh" |
fa8fd4d2 | 42 | |
29b92d6f | 43 | #include "base64.hh" |
3696224d | 44 | #include "inflighter.cc" |
3696224d | 45 | #include "namespaces.hh" |
7108e055 | 46 | #include "common_startup.hh" |
3e7dcee6 | 47 | |
cd189f24 | 48 | #include "ixfr.hh" |
e23622a7 | 49 | using boost::scoped_ptr; |
3696224d | 50 | |
fab71044 | 51 | |
d3ee36f2 | 52 | void CommunicatorClass::addSuckRequest(const DNSName &domain, const string &master) |
3696224d BH |
53 | { |
54 | Lock l(&d_lock); | |
3696224d BH |
55 | SuckRequest sr; |
56 | sr.domain = domain; | |
57 | sr.master = master; | |
dbcb3066 | 58 | pair<UniQueue::iterator, bool> res; |
a71bee29 PD |
59 | |
60 | res=d_suckdomains.push_back(sr); | |
dbcb3066 | 61 | if(res.second) { |
7f3d870e | 62 | d_suck_sem.post(); |
dbcb3066 | 63 | } |
3e7dcee6 | 64 | |
3696224d BH |
65 | } |
66 | ||
d3ee36f2 | 67 | struct ZoneStatus |
68 | { | |
69 | bool isDnssecZone{false}; | |
70 | bool isPresigned{false}; | |
71 | bool isNSEC3 {false}; | |
72 | bool optOutFlag {false}; | |
73 | NSEC3PARAMRecordContent ns3pr; | |
74 | ||
75 | bool isNarrow{false}; | |
76 | unsigned int soa_serial{0}; | |
77 | set<DNSName> nsset, qnames, secured; | |
78 | uint32_t domain_id; | |
3e7dcee6 | 79 | int numDeltas{0}; |
d3ee36f2 | 80 | }; |
81 | ||
82 | ||
18b433ac | 83 | void CommunicatorClass::ixfrSuck(const DNSName &domain, const TSIGTriplet& tt, const ComboAddress& laddr, const ComboAddress& remote, scoped_ptr<AuthLua4>& pdl, |
3e7dcee6 | 84 | ZoneStatus& zs, vector<DNSRecord>* axfr) |
3696224d | 85 | { |
cd189f24 | 86 | UeberBackend B; // fresh UeberBackend |
87 | ||
88 | DomainInfo di; | |
89 | di.backend=0; | |
90 | // bool transaction=false; | |
91 | try { | |
92 | DNSSECKeeper dk (&B); // reuse our UeberBackend copy for DNSSECKeeper | |
93 | ||
889500d7 | 94 | if(!B.getDomainInfo(domain, di) || !di.backend || di.kind != DomainInfo::Slave) { // di.backend and B are mostly identical |
cd189f24 | 95 | L<<Logger::Error<<"Can't determine backend for domain '"<<domain<<"'"<<endl; |
96 | return; | |
97 | } | |
cd189f24 | 98 | |
99 | soatimes st; | |
100 | memset(&st, 0, sizeof(st)); | |
d3ee36f2 | 101 | st.serial=di.serial; |
cd189f24 | 102 | |
aaf7799a CH |
103 | DNSRecord drsoa; |
104 | drsoa.d_content = std::make_shared<SOARecordContent>(g_rootdnsname, g_rootdnsname, st); | |
105 | auto deltas = getIXFRDeltas(remote, domain, drsoa, tt, laddr.sin4.sin_family ? &laddr : 0, ((size_t) ::arg().asNum("xfr-max-received-mbytes")) * 1024 * 1024); | |
3e7dcee6 | 106 | zs.numDeltas=deltas.size(); |
107 | // cout<<"Got "<<deltas.size()<<" deltas from serial "<<di.serial<<", applying.."<<endl; | |
cd189f24 | 108 | |
109 | for(const auto& d : deltas) { | |
3e7dcee6 | 110 | const auto& remove = d.first; |
111 | const auto& add = d.second; | |
112 | // cout<<"Delta sizes: "<<remove.size()<<", "<<add.size()<<endl; | |
cd189f24 | 113 | |
3e7dcee6 | 114 | if(remove.empty()) { // we got passed an AXFR! |
115 | *axfr = add; | |
116 | return; | |
117 | } | |
118 | ||
119 | ||
cd189f24 | 120 | // our hammer is 'replaceRRSet(domain_id, qname, qt, vector<DNSResourceRecord>& rrset) |
3e7dcee6 | 121 | // which thinks in terms of RRSETs |
122 | // however, IXFR does not, and removes and adds *records* (bummer) | |
123 | // this means that we must group updates by {qname,qtype}, retrieve the RRSET, apply | |
124 | // the add/remove updates, and replaceRRSet the whole thing. | |
cd189f24 | 125 | |
3e7dcee6 | 126 | |
127 | map<pair<DNSName,uint16_t>, pair<vector<DNSRecord>, vector<DNSRecord> > > grouped; | |
128 | ||
129 | for(const auto& x: remove) | |
130 | grouped[{x.d_name, x.d_type}].first.push_back(x); | |
131 | for(const auto& x: add) | |
132 | grouped[{x.d_name, x.d_type}].second.push_back(x); | |
cd189f24 | 133 | |
134 | di.backend->startTransaction(domain, -1); | |
3e7dcee6 | 135 | for(const auto g : grouped) { |
3e7dcee6 | 136 | vector<DNSRecord> rrset; |
abcd36a1 CH |
137 | { |
138 | DNSZoneRecord zrr; | |
139 | B.lookup(QType(g.first.second), g.first.first, 0, di.id); | |
140 | while(B.get(zrr)) { | |
141 | rrset.push_back(zrr.dr); | |
142 | } | |
3e7dcee6 | 143 | } |
144 | // O(N^2)! | |
145 | rrset.erase(remove_if(rrset.begin(), rrset.end(), | |
146 | [&g](const DNSRecord& dr) { | |
147 | return count(g.second.first.cbegin(), | |
148 | g.second.first.cend(), dr); | |
149 | }), rrset.end()); | |
150 | // the DNSRecord== operator compares on name, type, class and lowercase content representation | |
151 | ||
152 | for(const auto& x : g.second.second) { | |
153 | rrset.push_back(x); | |
154 | } | |
cd189f24 | 155 | |
3e7dcee6 | 156 | vector<DNSResourceRecord> replacement; |
4950b140 CH |
157 | for(const auto& dr : rrset) { |
158 | auto rr = DNSResourceRecord::fromWire(dr); | |
159 | rr.qname += domain; | |
160 | rr.domain_id = di.id; | |
161 | if(dr.d_type == QType::SOA) { | |
3e7dcee6 | 162 | // cout<<"New SOA: "<<x.d_content->getZoneRepresentation()<<endl; |
4950b140 | 163 | auto sr = getRR<SOARecordContent>(dr); |
3e7dcee6 | 164 | zs.soa_serial=sr->d_st.serial; |
165 | } | |
166 | ||
4950b140 | 167 | replacement.push_back(rr); |
3e7dcee6 | 168 | } |
d3ee36f2 | 169 | |
3e7dcee6 | 170 | di.backend->replaceRRSet(di.id, g.first.first+domain, QType(g.first.second), replacement); |
171 | } | |
cd189f24 | 172 | di.backend->commitTransaction(); |
173 | } | |
cd189f24 | 174 | } |
175 | catch(std::exception& p) { | |
3e7dcee6 | 176 | L<<Logger::Error<<"Got exception during IXFR: "<<p.what()<<endl; |
177 | throw; | |
cd189f24 | 178 | } |
179 | catch(PDNSException& p) { | |
3e7dcee6 | 180 | L<<Logger::Error<<"Got exception during IXFR: "<<p.reason<<endl; |
181 | throw; | |
182 | } | |
183 | } | |
cd189f24 | 184 | |
3e7dcee6 | 185 | |
186 | static bool processRecordForZS(const DNSName& domain, bool& firstNSEC3, DNSResourceRecord& rr, ZoneStatus& zs) | |
187 | { | |
188 | switch(rr.qtype.getCode()) { | |
189 | case QType::NSEC3PARAM: | |
190 | zs.ns3pr = NSEC3PARAMRecordContent(rr.content); | |
191 | zs.isDnssecZone = zs.isNSEC3 = true; | |
192 | zs.isNarrow = false; | |
e4fb8488 | 193 | return false; |
3e7dcee6 | 194 | case QType::NSEC3: { |
195 | NSEC3RecordContent ns3rc(rr.content); | |
196 | if (firstNSEC3) { | |
197 | zs.isDnssecZone = zs.isPresigned = true; | |
198 | firstNSEC3 = false; | |
199 | } else if (zs.optOutFlag != (ns3rc.d_flags & 1)) | |
200 | throw PDNSException("Zones with a mixture of Opt-Out NSEC3 RRs and non-Opt-Out NSEC3 RRs are not supported."); | |
201 | zs.optOutFlag = ns3rc.d_flags & 1; | |
202 | if (ns3rc.d_set.count(QType::NS) && !(rr.qname==domain)) { | |
92c6c467 | 203 | DNSName hashPart = rr.qname.makeRelative(domain); |
3e7dcee6 | 204 | zs.secured.insert(hashPart); |
205 | } | |
e4fb8488 | 206 | return false; |
3e7dcee6 | 207 | } |
208 | ||
209 | case QType::NSEC: | |
210 | zs.isDnssecZone = zs.isPresigned = true; | |
e4fb8488 | 211 | return false; |
3e7dcee6 | 212 | |
213 | case QType::NS: | |
214 | if(rr.qname!=domain) | |
215 | zs.nsset.insert(rr.qname); | |
bd9602fa | 216 | break; |
3e7dcee6 | 217 | } |
218 | ||
219 | zs.qnames.insert(rr.qname); | |
220 | ||
221 | rr.domain_id=zs.domain_id; | |
222 | return true; | |
cd189f24 | 223 | } |
224 | ||
d3ee36f2 | 225 | /* So this code does a number of things. |
226 | 1) It will AXFR a domain from a master | |
227 | The code can retrieve the current serial number in the database itself. | |
228 | It may attempt an IXFR | |
229 | 2) It will filter the zone through a lua *filter* script | |
230 | 3) The code walks through the zone records do determine DNSSEC status (secured, nsec/nsec3, optout) | |
231 | 4) It inserts the zone into the database | |
232 | With the right 'ordername' fields | |
233 | 5) It updates the Empty Non Terminals | |
234 | */ | |
cd189f24 | 235 | |
18b433ac | 236 | static vector<DNSResourceRecord> doAxfr(const ComboAddress& raddr, const DNSName& domain, const TSIGTriplet& tt, const ComboAddress& laddr, scoped_ptr<AuthLua4>& pdl, ZoneStatus& zs) |
d3ee36f2 | 237 | { |
238 | vector<DNSResourceRecord> rrs; | |
db8f9152 | 239 | AXFRRetriever retriever(raddr, domain, tt, (laddr.sin4.sin_family == 0) ? NULL : &laddr, ((size_t) ::arg().asNum("xfr-max-received-mbytes")) * 1024 * 1024); |
d3ee36f2 | 240 | Resolver::res_t recs; |
241 | bool first=true; | |
242 | bool firstNSEC3{true}; | |
243 | bool soa_received {false}; | |
244 | while(retriever.getChunk(recs)) { | |
245 | if(first) { | |
246 | L<<Logger::Error<<"AXFR started for '"<<domain<<"'"<<endl; | |
247 | first=false; | |
248 | } | |
249 | ||
250 | for(Resolver::res_t::iterator i=recs.begin();i!=recs.end();++i) { | |
92c6c467 | 251 | i->qname.makeUsLowerCase(); |
d3ee36f2 | 252 | if(i->qtype.getCode() == QType::OPT || i->qtype.getCode() == QType::TSIG) // ignore EDNS0 & TSIG |
253 | continue; | |
254 | ||
255 | if(!i->qname.isPartOf(domain)) { | |
256 | L<<Logger::Error<<"Remote "<<raddr.toStringWithPort()<<" tried to sneak in out-of-zone data '"<<i->qname<<"'|"<<i->qtype.getName()<<" during AXFR of zone '"<<domain<<"', ignoring"<<endl; | |
257 | continue; | |
258 | } | |
259 | ||
260 | vector<DNSResourceRecord> out; | |
261 | if(!pdl || !pdl->axfrfilter(raddr, domain, *i, out)) { | |
3e7dcee6 | 262 | out.push_back(*i); // if axfrfilter didn't do anything, we put our record in 'out' ourselves |
d3ee36f2 | 263 | } |
264 | ||
265 | for(DNSResourceRecord& rr : out) { | |
50b867eb KM |
266 | if(!rr.qname.isPartOf(domain)) { |
267 | L<<Logger::Error<<"Lua axfrfilter() filter tried to sneak in out-of-zone data '"<<i->qname<<"'|"<<i->qtype.getName()<<" during AXFR of zone '"<<domain<<"', ignoring"<<endl; | |
268 | continue; | |
269 | } | |
3ce97f4a | 270 | if(!processRecordForZS(domain, firstNSEC3, rr, zs)) |
271 | continue; | |
3e7dcee6 | 272 | if(rr.qtype.getCode() == QType::SOA) { |
d3ee36f2 | 273 | if(soa_received) |
274 | continue; //skip the last SOA | |
275 | SOAData sd; | |
276 | fillSOAData(rr.content,sd); | |
277 | zs.soa_serial = sd.serial; | |
278 | soa_received = true; | |
d3ee36f2 | 279 | } |
280 | ||
d3ee36f2 | 281 | rrs.push_back(rr); |
3e7dcee6 | 282 | |
d3ee36f2 | 283 | } |
284 | } | |
285 | } | |
286 | return rrs; | |
287 | } | |
288 | ||
3e7dcee6 | 289 | |
d3ee36f2 | 290 | void CommunicatorClass::suck(const DNSName &domain, const string &remote) |
cd189f24 | 291 | { |
3e7dcee6 | 292 | { |
293 | Lock l(&d_lock); | |
294 | if(d_inprogress.count(domain)) { | |
295 | return; | |
296 | } | |
297 | d_inprogress.insert(domain); | |
298 | } | |
299 | RemoveSentinel rs(domain, this); // this removes us from d_inprogress when we go out of scope | |
300 | ||
f43c4448 | 301 | L<<Logger::Error<<"Initiating transfer of '"<<domain<<"' from remote '"<<remote<<"'"<<endl; |
295c4a00 | 302 | UeberBackend B; // fresh UeberBackend |
3696224d BH |
303 | |
304 | DomainInfo di; | |
305 | di.backend=0; | |
376ec278 | 306 | bool transaction=false; |
3696224d | 307 | try { |
295c4a00 | 308 | DNSSECKeeper dk (&B); // reuse our UeberBackend copy for DNSSECKeeper |
a1282cdd | 309 | |
889500d7 | 310 | if(!B.getDomainInfo(domain, di) || !di.backend || di.kind != DomainInfo::Slave) { // di.backend and B are mostly identical |
f43c4448 | 311 | L<<Logger::Error<<"Can't determine backend for domain '"<<domain<<"'"<<endl; |
3696224d BH |
312 | return; |
313 | } | |
d3ee36f2 | 314 | ZoneStatus zs; |
315 | zs.domain_id=di.id; | |
53568203 | 316 | |
98c9ec39 | 317 | TSIGTriplet tt; |
318 | if(dk.getTSIGForAccess(domain, remote, &tt.name)) { | |
29b92d6f | 319 | string tsigsecret64; |
98c9ec39 | 320 | if(B.getTSIGKey(tt.name, &tt.algo, &tsigsecret64)) { |
321 | if(B64Decode(tsigsecret64, tt.secret)) { | |
322 | L<<Logger::Error<<"Unable to Base-64 decode TSIG key '"<<tt.name<<"' for domain '"<<domain<<"' not found"<<endl; | |
323 | return; | |
324 | } | |
53568203 | 325 | } else { |
98c9ec39 | 326 | L<<Logger::Error<<"TSIG key '"<<tt.name<<"' for domain '"<<domain<<"' not found"<<endl; |
53568203 | 327 | return; |
a1467662 | 328 | } |
29b92d6f | 329 | } |
53568203 KM |
330 | |
331 | ||
18b433ac | 332 | scoped_ptr<AuthLua4> pdl; |
e23622a7 | 333 | vector<string> scripts; |
86177332 | 334 | string script=::arg()["lua-axfr-script"]; |
295c4a00 | 335 | if(B.getDomainMetadata(domain, "LUA-AXFR-SCRIPT", scripts) && !scripts.empty()) { |
86177332 KM |
336 | if (pdns_iequals(scripts[0], "NONE")) { |
337 | script.clear(); | |
338 | } else { | |
339 | script=scripts[0]; | |
340 | } | |
341 | } | |
342 | if(!script.empty()){ | |
b2aefbf9 | 343 | try { |
7c99293d AT |
344 | pdl.reset(new AuthLua4()); |
345 | pdl->loadFile(script); | |
86177332 | 346 | L<<Logger::Info<<"Loaded Lua script '"<<script<<"' to edit the incoming AXFR of '"<<domain<<"'"<<endl; |
b2aefbf9 BH |
347 | } |
348 | catch(std::exception& e) { | |
86177332 | 349 | L<<Logger::Error<<"Failed to load Lua editing script '"<<script<<"' for incoming AXFR of '"<<domain<<"': "<<e.what()<<endl; |
b2aefbf9 BH |
350 | return; |
351 | } | |
e23622a7 | 352 | } |
53568203 | 353 | |
fc396d56 BH |
354 | vector<string> localaddr; |
355 | ComboAddress laddr; | |
edb693f0 | 356 | ComboAddress raddr(remote, 53); |
295c4a00 | 357 | if(B.getDomainMetadata(domain, "AXFR-SOURCE", localaddr) && !localaddr.empty()) { |
fc396d56 BH |
358 | try { |
359 | laddr = ComboAddress(localaddr[0]); | |
f43c4448 | 360 | L<<Logger::Info<<"AXFR source for domain '"<<domain<<"' set to "<<localaddr[0]<<endl; |
fc396d56 BH |
361 | } |
362 | catch(std::exception& e) { | |
f43c4448 | 363 | L<<Logger::Error<<"Failed to load AXFR source '"<<localaddr[0]<<"' for incoming AXFR of '"<<domain<<"': "<<e.what()<<endl; |
fc396d56 BH |
364 | return; |
365 | } | |
edb693f0 | 366 | } else { |
367 | if(raddr.sin4.sin_family == AF_INET) | |
368 | laddr=ComboAddress(::arg()["query-local-address"]); | |
369 | else if(!::arg()["query-local-address6"].empty()) | |
370 | laddr=ComboAddress(::arg()["query-local-address6"]); | |
371 | else | |
372 | laddr.sin4.sin_family = 0; | |
8c949c52 | 373 | } |
fc396d56 | 374 | |
53568203 KM |
375 | bool hadDnssecZone = false; |
376 | bool hadPresigned = false; | |
377 | bool hadNSEC3 = false; | |
d3ee36f2 | 378 | NSEC3PARAMRecordContent hadNs3pr; |
379 | bool hadNarrow=false; | |
380 | ||
edb693f0 | 381 | |
3e7dcee6 | 382 | vector<DNSResourceRecord> rrs; |
53568203 KM |
383 | if(dk.isSecuredZone(domain)) { |
384 | hadDnssecZone=true; | |
385 | hadPresigned=dk.isPresigned(domain); | |
d3ee36f2 | 386 | if (dk.getNSEC3PARAM(domain, &zs.ns3pr, &zs.isNarrow)) { |
53568203 | 387 | hadNSEC3 = true; |
d3ee36f2 | 388 | hadNs3pr = zs.ns3pr; |
389 | hadNarrow = zs.isNarrow; | |
53568203 KM |
390 | } |
391 | } | |
d3ee36f2 | 392 | else if(di.serial) { |
393 | vector<string> meta; | |
394 | B.getDomainMetadata(domain, "IXFR", meta); | |
3e7dcee6 | 395 | if(!meta.empty() && meta[0]=="1") { |
396 | vector<DNSRecord> axfr; | |
edb693f0 | 397 | L<<Logger::Warning<<"Starting IXFR of '"<<domain<<"' from remote "<<raddr.toStringWithPort()<<endl; |
3e7dcee6 | 398 | ixfrSuck(domain, tt, laddr, raddr, pdl, zs, &axfr); |
399 | if(!axfr.empty()) { | |
400 | L<<Logger::Warning<<"IXFR of '"<<domain<<"' from remote '"<<raddr.toStringWithPort()<<"' turned into an AXFR"<<endl; | |
401 | bool firstNSEC3=true; | |
402 | rrs.reserve(axfr.size()); | |
403 | for(const auto& dr : axfr) { | |
4950b140 | 404 | auto rr = DNSResourceRecord::fromWire(dr); |
92c6c467 | 405 | (rr.qname += domain).makeUsLowerCase(); |
3e7dcee6 | 406 | rr.domain_id = zs.domain_id; |
3ce97f4a | 407 | if(!processRecordForZS(domain, firstNSEC3, rr, zs)) |
408 | continue; | |
3e7dcee6 | 409 | if(dr.d_type == QType::SOA) { |
410 | auto sd = getRR<SOARecordContent>(dr); | |
411 | zs.soa_serial = sd->d_st.serial; | |
412 | } | |
413 | rrs.push_back(rr); | |
414 | } | |
415 | } | |
416 | else { | |
417 | L<<Logger::Warning<<"Done with IXFR of '"<<domain<<"' from remote '"<<remote<<"', got "<<zs.numDeltas<<" delta"<<addS(zs.numDeltas)<<", serial now "<<zs.soa_serial<<endl; | |
1d0995bc | 418 | purgeAuthCaches(domain.toString()+"$"); |
3e7dcee6 | 419 | return; |
420 | } | |
421 | } | |
3696224d | 422 | } |
68fa524b | 423 | |
3e7dcee6 | 424 | if(rrs.empty()) { |
425 | L<<Logger::Warning<<"Starting AXFR of '"<<domain<<"' from remote "<<raddr.toStringWithPort()<<endl; | |
426 | rrs = doAxfr(raddr, domain, tt, laddr, pdl, zs); | |
427 | L<<Logger::Warning<<"AXFR of '"<<domain<<"' from remote "<<raddr.toStringWithPort()<<" done"<<endl; | |
428 | } | |
d3ee36f2 | 429 | |
430 | if(zs.isNSEC3) { | |
431 | zs.ns3pr.d_flags = zs.optOutFlag ? 1 : 0; | |
53568203 | 432 | } |
ff473027 | 433 | |
d3ee36f2 | 434 | if(!zs.isPresigned) { |
53568203 KM |
435 | DNSSECKeeper::keyset_t keys = dk.getKeys(domain); |
436 | if(!keys.empty()) { | |
d3ee36f2 | 437 | zs.isDnssecZone = true; |
438 | zs.isNSEC3 = hadNSEC3; | |
439 | zs.ns3pr = hadNs3pr; | |
440 | zs.optOutFlag = (hadNs3pr.d_flags & 1); | |
441 | zs.isNarrow = hadNarrow; | |
53568203 KM |
442 | } |
443 | } | |
444 | ||
d3ee36f2 | 445 | if(zs.isDnssecZone) { |
446 | if(!zs.isNSEC3) | |
f9cf6d92 | 447 | L<<Logger::Info<<"Adding NSEC ordering information"<<endl; |
d3ee36f2 | 448 | else if(!zs.isNarrow) |
f43c4448 | 449 | L<<Logger::Info<<"Adding NSEC3 hashed ordering information for '"<<domain<<"'"<<endl; |
f9cf6d92 KM |
450 | else |
451 | L<<Logger::Info<<"Erasing NSEC3 ordering since we are narrow, only setting 'auth' fields"<<endl; | |
452 | } | |
453 | ||
b5baefaf | 454 | |
d3ee36f2 | 455 | transaction=di.backend->startTransaction(domain, zs.domain_id); |
3e7dcee6 | 456 | L<<Logger::Error<<"Backend transaction started for '"<<domain<<"' storage"<<endl; |
f9cf6d92 | 457 | |
7f2aa497 | 458 | // update the presigned flag and NSEC3PARAM |
d3ee36f2 | 459 | if (zs.isDnssecZone) { |
53568203 | 460 | // update presigned if there was a change |
d3ee36f2 | 461 | if (zs.isPresigned && !hadPresigned) { |
7f2aa497 KM |
462 | // zone is now presigned |
463 | dk.setPresigned(domain); | |
d3ee36f2 | 464 | } else if (hadPresigned && !zs.isPresigned) { |
53568203 KM |
465 | // zone is no longer presigned |
466 | dk.unsetPresigned(domain); | |
7f2aa497 | 467 | } |
53568203 | 468 | // update NSEC3PARAM |
d3ee36f2 | 469 | if (zs.isNSEC3) { |
53568203 | 470 | // zone is NSEC3, only update if there was a change |
d3ee36f2 | 471 | if (!hadNSEC3 || (hadNarrow != zs.isNarrow) || |
472 | (zs.ns3pr.d_algorithm != hadNs3pr.d_algorithm) || | |
473 | (zs.ns3pr.d_flags != hadNs3pr.d_flags) || | |
474 | (zs.ns3pr.d_iterations != hadNs3pr.d_iterations) || | |
475 | (zs.ns3pr.d_salt != hadNs3pr.d_salt)) { | |
476 | dk.setNSEC3PARAM(domain, zs.ns3pr, zs.isNarrow); | |
7f2aa497 | 477 | } |
53568203 KM |
478 | } else if (hadNSEC3 ) { |
479 | // zone is no longer NSEC3 | |
480 | dk.unsetNSEC3PARAM(domain); | |
481 | } | |
482 | } else if (hadDnssecZone) { | |
483 | // zone is no longer signed | |
484 | if (hadPresigned) { | |
485 | // remove presigned | |
486 | dk.unsetPresigned(domain); | |
487 | } | |
488 | if (hadNSEC3) { | |
489 | // unset NSEC3PARAM | |
490 | dk.unsetNSEC3PARAM(domain); | |
7f2aa497 | 491 | } |
7f2aa497 KM |
492 | } |
493 | ||
f9cf6d92 | 494 | bool doent=true; |
b5baefaf | 495 | uint32_t maxent = ::arg().asNum("max-ent-entries"); |
c9b43446 | 496 | DNSName shorter, ordername; |
7abbc40f PD |
497 | set<DNSName> rrterm; |
498 | map<DNSName,bool> nonterm; | |
b5baefaf | 499 | |
53568203 | 500 | |
ef7cd021 | 501 | for(DNSResourceRecord& rr : rrs) { |
d3ee36f2 | 502 | if(!zs.isPresigned) { |
53568203 KM |
503 | if (rr.qtype.getCode() == QType::RRSIG) |
504 | continue; | |
d3ee36f2 | 505 | if(zs.isDnssecZone && rr.qtype.getCode() == QType::DNSKEY && !::arg().mustDo("direct-dnskey")) |
53568203 KM |
506 | continue; |
507 | } | |
508 | ||
f9cf6d92 KM |
509 | // Figure out auth and ents |
510 | rr.auth=true; | |
511 | shorter=rr.qname; | |
512 | rrterm.clear(); | |
513 | do { | |
514 | if(doent) { | |
d3ee36f2 | 515 | if (!zs.qnames.count(shorter)) |
f9cf6d92 | 516 | rrterm.insert(shorter); |
d7652f3a | 517 | } |
d3ee36f2 | 518 | if(zs.nsset.count(shorter) && rr.qtype.getCode() != QType::DS) |
f9cf6d92 | 519 | rr.auth=false; |
e5c7239c | 520 | |
e325f20c | 521 | if (shorter==domain) // stop at apex |
f9cf6d92 | 522 | break; |
7abbc40f | 523 | }while(shorter.chopOff()); |
b8adb30d | 524 | |
e5c7239c KM |
525 | // Insert ents |
526 | if(doent && !rrterm.empty()) { | |
527 | bool auth; | |
528 | if (!rr.auth && rr.qtype.getCode() == QType::NS) { | |
d3ee36f2 | 529 | if (zs.isNSEC3) |
c9b43446 KM |
530 | ordername=DNSName(toBase32Hex(hashQNameWithSalt(zs.ns3pr, rr.qname))); |
531 | auth=(!zs.isNSEC3 || !zs.optOutFlag || zs.secured.count(ordername)); | |
e5c7239c KM |
532 | } else |
533 | auth=rr.auth; | |
534 | ||
7abbc40f | 535 | for(const auto &nt: rrterm){ |
e5c7239c | 536 | if (!nonterm.count(nt)) |
7abbc40f | 537 | nonterm.insert(pair<DNSName, bool>(nt, auth)); |
e5c7239c KM |
538 | else if (auth) |
539 | nonterm[nt]=true; | |
540 | } | |
541 | ||
f9cf6d92 | 542 | if(nonterm.size() > maxent) { |
f43c4448 | 543 | L<<Logger::Error<<"AXFR zone "<<domain<<" has too many empty non terminals."<<endl; |
f9cf6d92 KM |
544 | nonterm.clear(); |
545 | doent=false; | |
27045410 | 546 | } |
d7652f3a | 547 | } |
f9cf6d92 KM |
548 | |
549 | // RRSIG is always auth, even inside a delegation | |
550 | if (rr.qtype.getCode() == QType::RRSIG) | |
551 | rr.auth=true; | |
552 | ||
553 | // Add ordername and insert record | |
d3ee36f2 | 554 | if (zs.isDnssecZone && rr.qtype.getCode() != QType::RRSIG) { |
555 | if (zs.isNSEC3) { | |
f9cf6d92 | 556 | // NSEC3 |
c9b43446 KM |
557 | ordername=DNSName(toBase32Hex(hashQNameWithSalt(zs.ns3pr, rr.qname))); |
558 | if(!zs.isNarrow && (rr.auth || (rr.qtype.getCode() == QType::NS && (!zs.optOutFlag || zs.secured.count(ordername))))) { | |
559 | di.backend->feedRecord(rr, ordername); | |
f9cf6d92 | 560 | } else |
c9b43446 | 561 | di.backend->feedRecord(rr, DNSName()); |
f9cf6d92 KM |
562 | } else { |
563 | // NSEC | |
564 | if (rr.auth || rr.qtype.getCode() == QType::NS) { | |
c9b43446 KM |
565 | ordername=rr.qname.makeRelative(domain); |
566 | di.backend->feedRecord(rr, ordername); | |
f9cf6d92 | 567 | } else |
c9b43446 | 568 | di.backend->feedRecord(rr, DNSName()); |
f9cf6d92 KM |
569 | } |
570 | } else | |
c9b43446 | 571 | di.backend->feedRecord(rr, DNSName()); |
d7652f3a | 572 | } |
b5baefaf | 573 | |
f9cf6d92 KM |
574 | // Insert empty non-terminals |
575 | if(doent && !nonterm.empty()) { | |
d3ee36f2 | 576 | if (zs.isNSEC3) { |
577 | di.backend->feedEnts3(zs.domain_id, domain, nonterm, zs.ns3pr, zs.isNarrow); | |
f9cf6d92 | 578 | } else |
d3ee36f2 | 579 | di.backend->feedEnts(zs.domain_id, nonterm); |
b5baefaf PD |
580 | } |
581 | ||
14b7e03b | 582 | di.backend->commitTransaction(); |
376ec278 | 583 | transaction = false; |
d3ee36f2 | 584 | di.backend->setFresh(zs.domain_id); |
38fdb531 | 585 | purgeAuthCaches(domain.toString()+"$"); |
14b7e03b | 586 | |
a1282cdd | 587 | |
d3ee36f2 | 588 | L<<Logger::Error<<"AXFR done for '"<<domain<<"', zone committed with serial number "<<zs.soa_serial<<endl; |
8de9c054 BH |
589 | if(::arg().mustDo("slave-renotify")) |
590 | notifyDomain(domain); | |
3696224d BH |
591 | } |
592 | catch(DBException &re) { | |
290a083d | 593 | L<<Logger::Error<<"Unable to feed record during incoming AXFR of '" << domain<<"': "<<re.reason<<endl; |
376ec278 | 594 | if(di.backend && transaction) { |
3696224d BH |
595 | L<<Logger::Error<<"Aborting possible open transaction for domain '"<<domain<<"' AXFR"<<endl; |
596 | di.backend->abortTransaction(); | |
597 | } | |
598 | } | |
75ccb5b9 | 599 | catch(MOADNSException &re) { |
290a083d | 600 | L<<Logger::Error<<"Unable to parse record during incoming AXFR of '"<<domain<<"' (MOADNSException): "<<re.what()<<endl; |
376ec278 | 601 | if(di.backend && transaction) { |
2714db17 BH |
602 | L<<Logger::Error<<"Aborting possible open transaction for domain '"<<domain<<"' AXFR"<<endl; |
603 | di.backend->abortTransaction(); | |
604 | } | |
605 | } | |
606 | catch(std::exception &re) { | |
290a083d | 607 | L<<Logger::Error<<"Unable to parse record during incoming AXFR of '"<<domain<<"' (std::exception): "<<re.what()<<endl; |
376ec278 | 608 | if(di.backend && transaction) { |
75ccb5b9 BH |
609 | L<<Logger::Error<<"Aborting possible open transaction for domain '"<<domain<<"' AXFR"<<endl; |
610 | di.backend->abortTransaction(); | |
611 | } | |
612 | } | |
3696224d | 613 | catch(ResolverException &re) { |
290a083d | 614 | L<<Logger::Error<<"Unable to AXFR zone '"<<domain<<"' from remote '"<<remote<<"' (resolver): "<<re.reason<<endl; |
376ec278 | 615 | if(di.backend && transaction) { |
3696224d | 616 | L<<Logger::Error<<"Aborting possible open transaction for domain '"<<domain<<"' AXFR"<<endl; |
7f450125 PD |
617 | di.backend->abortTransaction(); |
618 | } | |
619 | } | |
3f81d239 | 620 | catch(PDNSException &ae) { |
290a083d | 621 | L<<Logger::Error<<"Unable to AXFR zone '"<<domain<<"' from remote '"<<remote<<"' (PDNSException): "<<ae.reason<<endl; |
376ec278 | 622 | if(di.backend && transaction) { |
7f450125 | 623 | L<<Logger::Error<<"Aborting possible open transaction for domain '"<<domain<<"' AXFR"<<endl; |
3696224d BH |
624 | di.backend->abortTransaction(); |
625 | } | |
626 | } | |
627 | } | |
7597b3cf | 628 | namespace { |
7597b3cf BH |
629 | struct DomainNotificationInfo |
630 | { | |
631 | DomainInfo di; | |
632 | bool dnssecOk; | |
95302209 | 633 | ComboAddress localaddr; |
561434a6 PD |
634 | DNSName tsigkeyname, tsigalgname; |
635 | string tsigsecret; | |
7597b3cf BH |
636 | }; |
637 | } | |
638 | ||
3696224d BH |
639 | |
640 | struct SlaveSenderReceiver | |
641 | { | |
561434a6 | 642 | typedef pair<DNSName, uint16_t> Identifier; |
53568203 | 643 | |
54b2edb4 BH |
644 | struct Answer { |
645 | uint32_t theirSerial; | |
646 | uint32_t theirInception; | |
647 | uint32_t theirExpire; | |
648 | }; | |
53568203 | 649 | |
54b2edb4 | 650 | map<uint32_t, Answer> d_freshness; |
53568203 | 651 | |
3696224d BH |
652 | SlaveSenderReceiver() |
653 | { | |
3696224d | 654 | } |
53568203 | 655 | |
c0a5fc34 | 656 | void deliverTimeout(const Identifier& i) |
0c01dd7c BH |
657 | { |
658 | } | |
53568203 | 659 | |
7597b3cf | 660 | Identifier send(DomainNotificationInfo& dni) |
3696224d | 661 | { |
7597b3cf | 662 | random_shuffle(dni.di.masters.begin(), dni.di.masters.end()); |
0c01dd7c | 663 | try { |
0a217e64 CH |
664 | return make_pair(dni.di.zone, |
665 | d_resolver.sendResolve(ComboAddress(*dni.di.masters.begin(), 53), dni.localaddr, | |
666 | dni.di.zone, | |
667 | QType::SOA, | |
7f24b6c6 | 668 | nullptr, |
0a217e64 CH |
669 | dni.dnssecOk, dni.tsigkeyname, dni.tsigalgname, dni.tsigsecret) |
670 | ); | |
0c01dd7c | 671 | } |
3f81d239 | 672 | catch(PDNSException& e) { |
86f1af1c | 673 | throw runtime_error("While attempting to query freshness of '"+dni.di.zone.toLogString()+"': "+e.reason); |
0c01dd7c | 674 | } |
3696224d | 675 | } |
68dae32c | 676 | |
3696224d BH |
677 | bool receive(Identifier& id, Answer& a) |
678 | { | |
54b2edb4 | 679 | if(d_resolver.tryGetSOASerial(&id.first, &a.theirSerial, &a.theirInception, &a.theirExpire, &id.second)) { |
3696224d BH |
680 | return 1; |
681 | } | |
682 | return 0; | |
683 | } | |
68dae32c | 684 | |
7597b3cf | 685 | void deliverAnswer(DomainNotificationInfo& dni, const Answer& a, unsigned int usec) |
3696224d | 686 | { |
7597b3cf | 687 | d_freshness[dni.di.id]=a; |
3696224d | 688 | } |
68dae32c | 689 | |
3696224d | 690 | Resolver d_resolver; |
3696224d BH |
691 | }; |
692 | ||
7f3d870e BH |
693 | void CommunicatorClass::addSlaveCheckRequest(const DomainInfo& di, const ComboAddress& remote) |
694 | { | |
695 | Lock l(&d_lock); | |
90c9a70e BH |
696 | DomainInfo ours = di; |
697 | ours.backend = 0; | |
698 | d_tocheck.insert(ours); | |
7f3d870e BH |
699 | d_any_sem.post(); // kick the loop! |
700 | } | |
701 | ||
7108e055 PD |
702 | void CommunicatorClass::addTrySuperMasterRequest(DNSPacket *p) |
703 | { | |
704 | Lock l(&d_lock); | |
705 | DNSPacket ours = *p; | |
706 | d_potentialsupermasters.push_back(ours); | |
707 | d_any_sem.post(); // kick the loop! | |
708 | } | |
709 | ||
3696224d BH |
710 | void CommunicatorClass::slaveRefresh(PacketHandler *P) |
711 | { | |
56a4f068 AT |
712 | // not unless we are slave |
713 | if (!::arg().mustDo("slave")) return; | |
714 | ||
3971cf53 | 715 | UeberBackend *B=P->getBackend(); |
16e654fa | 716 | vector<DomainInfo> rdomains; |
3e7dcee6 | 717 | vector<DomainNotificationInfo> sdomains; |
7108e055 | 718 | vector<DNSPacket> trysuperdomains; |
68dae32c | 719 | |
7f3d870e BH |
720 | { |
721 | Lock l(&d_lock); | |
722 | rdomains.insert(rdomains.end(), d_tocheck.begin(), d_tocheck.end()); | |
723 | d_tocheck.clear(); | |
7108e055 PD |
724 | trysuperdomains.insert(trysuperdomains.end(), d_potentialsupermasters.begin(), d_potentialsupermasters.end()); |
725 | d_potentialsupermasters.clear(); | |
7f3d870e | 726 | } |
68dae32c | 727 | |
ef7cd021 | 728 | for(DNSPacket& dp : trysuperdomains) { |
7731e32c AT |
729 | // get the TSIG key name |
730 | TSIGRecordContent trc; | |
731 | DNSName tsigkeyname; | |
ea3816cf | 732 | dp.getTSIGDetails(&trc, &tsigkeyname); |
7108e055 | 733 | int res; |
7731e32c | 734 | res=P->trySuperMasterSynchronous(&dp, tsigkeyname); |
7108e055 PD |
735 | if(res>=0) { |
736 | DNSPacket *r=dp.replyPacket(); | |
737 | r->setRcode(res); | |
738 | r->setOpcode(Opcode::Notify); | |
739 | N->send(r); | |
740 | delete r; | |
741 | } | |
742 | } | |
3e7dcee6 | 743 | if(rdomains.empty()) { // if we have priority domains, check them first |
7f3d870e | 744 | B->getUnfreshSlaveInfos(&rdomains); |
3e7dcee6 | 745 | } |
936eb34a | 746 | DNSSECKeeper dk(B); // NOW HEAR THIS! This DK uses our B backend, so no interleaved access! |
dbcb3066 BH |
747 | { |
748 | Lock l(&d_lock); | |
dbcb3066 | 749 | domains_by_name_t& nameindex=boost::multi_index::get<IDTag>(d_suckdomains); |
b239dfba | 750 | time_t now = time(0); |
dbcb3066 | 751 | |
ef7cd021 | 752 | for(DomainInfo& di : rdomains) { |
b239dfba PL |
753 | const auto failed = d_failedSlaveRefresh.find(di.zone); |
754 | if (failed != d_failedSlaveRefresh.end() && now < failed->second.second ) | |
755 | // If the domain has failed before and the time before the next check has not expired, skip this domain | |
756 | continue; | |
95302209 | 757 | std::vector<std::string> localaddr; |
dbcb3066 BH |
758 | SuckRequest sr; |
759 | sr.domain=di.zone; | |
760 | if(di.masters.empty()) // slave domains w/o masters are ignored | |
761 | continue; | |
762 | // remove unfresh domains already queued for AXFR, no sense polling them again | |
763 | sr.master=*di.masters.begin(); | |
3e7dcee6 | 764 | if(nameindex.count(sr)) { // this does NOT however protect us against AXFRs already in progress! |
dbcb3066 | 765 | continue; |
a71bee29 | 766 | } |
3e7dcee6 | 767 | if(d_inprogress.count(sr.domain)) // this does |
768 | continue; | |
769 | ||
7597b3cf BH |
770 | DomainNotificationInfo dni; |
771 | dni.di=di; | |
7fa35c07 | 772 | dni.dnssecOk = dk.doesDNSSEC(); |
68dae32c | 773 | |
7597b3cf BH |
774 | if(dk.getTSIGForAccess(di.zone, sr.master, &dni.tsigkeyname)) { |
775 | string secret64; | |
40920298 PL |
776 | if(!B->getTSIGKey(dni.tsigkeyname, &dni.tsigalgname, &secret64)) { |
777 | L<<Logger::Error<<"TSIG key '"<<dni.tsigkeyname<<"' for domain '"<<di.zone<<"' not found, can not AXFR."<<endl; | |
778 | continue; | |
779 | } | |
780 | if (B64Decode(secret64, dni.tsigsecret) == -1) { | |
781 | L<<Logger::Error<<"Unable to Base-64 decode TSIG key '"<<dni.tsigkeyname<<"' for domain '"<<di.zone<<"', can not AXFR."<<endl; | |
782 | continue; | |
783 | } | |
7597b3cf | 784 | } |
95302209 AT |
785 | |
786 | localaddr.clear(); | |
787 | // check for AXFR-SOURCE | |
788 | if(B->getDomainMetadata(di.zone, "AXFR-SOURCE", localaddr) && !localaddr.empty()) { | |
789 | try { | |
790 | dni.localaddr = ComboAddress(localaddr[0]); | |
791 | L<<Logger::Info<<"Freshness check source (AXFR-SOURCE) for domain '"<<di.zone<<"' set to "<<localaddr[0]<<endl; | |
792 | } | |
793 | catch(std::exception& e) { | |
794 | L<<Logger::Error<<"Failed to load freshness check source '"<<localaddr[0]<<"' for '"<<di.zone<<"': "<<e.what()<<endl; | |
795 | return; | |
796 | } | |
797 | } else { | |
798 | dni.localaddr.sin4.sin_family = 0; | |
799 | } | |
800 | ||
7597b3cf | 801 | sdomains.push_back(dni); |
dbcb3066 | 802 | } |
dbcb3066 | 803 | } |
3696224d BH |
804 | if(sdomains.empty()) |
805 | { | |
dbcb3066 BH |
806 | if(d_slaveschanged) { |
807 | Lock l(&d_lock); | |
3e7dcee6 | 808 | L<<Logger::Warning<<"No new unfresh slave domains, "<<d_suckdomains.size()<<" queued for AXFR already, "<<d_inprogress.size()<<" in progress"<<endl; |
dbcb3066 BH |
809 | } |
810 | d_slaveschanged = !rdomains.empty(); | |
3696224d BH |
811 | return; |
812 | } | |
dbcb3066 BH |
813 | else { |
814 | Lock l(&d_lock); | |
3696224d BH |
815 | L<<Logger::Warning<<sdomains.size()<<" slave domain"<<(sdomains.size()>1 ? "s" : "")<<" need"<< |
816 | (sdomains.size()>1 ? "" : "s")<< | |
dbcb3066 BH |
817 | " checking, "<<d_suckdomains.size()<<" queued for AXFR"<<endl; |
818 | } | |
68dae32c | 819 | |
3696224d | 820 | SlaveSenderReceiver ssr; |
68dae32c | 821 | |
7597b3cf | 822 | Inflighter<vector<DomainNotificationInfo>, SlaveSenderReceiver> ifl(sdomains, ssr); |
68dae32c | 823 | |
3696224d BH |
824 | ifl.d_maxInFlight = 200; |
825 | ||
826 | for(;;) { | |
827 | try { | |
828 | ifl.run(); | |
829 | break; | |
830 | } | |
dbcb3066 | 831 | catch(std::exception& e) { |
3696224d BH |
832 | L<<Logger::Error<<"While checking domain freshness: " << e.what()<<endl; |
833 | } | |
68dae32c | 834 | catch(PDNSException &re) { |
3696224d BH |
835 | L<<Logger::Error<<"While checking domain freshness: " << re.reason<<endl; |
836 | } | |
837 | } | |
3e7dcee6 | 838 | L<<Logger::Warning<<"Received serial number updates for "<<ssr.d_freshness.size()<<" zone"<<addS(ssr.d_freshness.size())<<", had "<<ifl.getTimeouts()<<" timeout"<<addS(ifl.getTimeouts())<<endl; |
16e654fa | 839 | |
7597b3cf | 840 | typedef DomainNotificationInfo val_t; |
b239dfba | 841 | time_t now = time(0); |
ef7cd021 | 842 | for(val_t& val : sdomains) { |
7597b3cf | 843 | DomainInfo& di(val.di); |
f9fa0e2d PD |
844 | // might've come from the packethandler |
845 | if(!di.backend && !B->getDomainInfo(di.zone, di)) { | |
f43c4448 | 846 | L<<Logger::Warning<<"Ignore domain "<< di.zone<<" since it has been removed from our backend"<<endl; |
232f0877 | 847 | continue; |
f9fa0e2d | 848 | } |
68dae32c | 849 | |
b239dfba PL |
850 | if(!ssr.d_freshness.count(di.id)) { // If we don't have an answer for the domain |
851 | uint64_t newCount = 1; | |
852 | const auto failedEntry = d_failedSlaveRefresh.find(di.zone); | |
853 | if (failedEntry != d_failedSlaveRefresh.end()) | |
854 | newCount = d_failedSlaveRefresh[di.zone].first + 1; | |
855 | time_t nextCheck = now + std::min(newCount * d_tickinterval, (uint64_t)::arg().asNum("soa-retry-default")); | |
856 | d_failedSlaveRefresh[di.zone] = {newCount, nextCheck}; | |
857 | if (newCount == 1 || newCount % 10 == 0) | |
858 | L<<Logger::Warning<<"Unable to retrieve SOA for "<<di.zone<<", this was the "<<(newCount == 1 ? "first" : std::to_string(newCount) + "th")<<" time."<<endl; | |
3696224d | 859 | continue; |
b239dfba PL |
860 | } |
861 | ||
862 | const auto wasFailedDomain = d_failedSlaveRefresh.find(di.zone); | |
863 | if (wasFailedDomain != d_failedSlaveRefresh.end()) | |
864 | d_failedSlaveRefresh.erase(di.zone); | |
865 | ||
54b2edb4 | 866 | uint32_t theirserial = ssr.d_freshness[di.id].theirSerial, ourserial = di.serial; |
68dae32c | 867 | |
0f76617d | 868 | if(rfc1982LessThan(theirserial, ourserial) && ourserial != 0 && !::arg().mustDo("axfr-lower-serial")) { |
8e90e428 | 869 | L<<Logger::Error<<"Domain '"<<di.zone<<"' more recent than master, our serial " << ourserial << " > their serial "<< theirserial << endl; |
3696224d BH |
870 | di.backend->setFresh(di.id); |
871 | } | |
872 | else if(theirserial == ourserial) { | |
7fa35c07 KM |
873 | uint32_t maxExpire=0, maxInception=0; |
874 | if(dk.isPresigned(di.zone)) { | |
936eb34a | 875 | B->lookup(QType(QType::RRSIG), di.zone); // can't use DK before we are done with this lookup! |
abcd36a1 | 876 | DNSZoneRecord zr; |
abcd36a1 CH |
877 | while(B->get(zr)) { |
878 | auto rrsig = getRR<RRSIGRecordContent>(zr.dr); | |
879 | if(rrsig->d_type == QType::SOA) { | |
880 | maxInception = std::max(maxInception, rrsig->d_siginception); | |
881 | maxExpire = std::max(maxExpire, rrsig->d_sigexpire); | |
54b2edb4 BH |
882 | } |
883 | } | |
7fa35c07 KM |
884 | } |
885 | if(! maxInception && ! ssr.d_freshness[di.id].theirInception) { | |
886 | L<<Logger::Info<<"Domain '"<< di.zone<<"' is fresh (no DNSSEC)"<<endl; | |
887 | di.backend->setFresh(di.id); | |
888 | } | |
889 | else if(maxInception == ssr.d_freshness[di.id].theirInception && maxExpire == ssr.d_freshness[di.id].theirExpire) { | |
890 | L<<Logger::Info<<"Domain '"<< di.zone<<"' is fresh and SOA RRSIGs match"<<endl; | |
891 | di.backend->setFresh(di.id); | |
892 | } | |
893 | else if(maxExpire >= now && ! ssr.d_freshness[di.id].theirInception ) { | |
894 | L<<Logger::Info<<"Domain '"<< di.zone<<"' is fresh, master is no longer signed but (some) signatures are still vallid"<<endl; | |
895 | di.backend->setFresh(di.id); | |
896 | } | |
897 | else if(maxInception && ! ssr.d_freshness[di.id].theirInception ) { | |
898 | L<<Logger::Warning<<"Domain '"<< di.zone<<"' is stale, master is no longer signed and all signatures have expired"<<endl; | |
899 | addSuckRequest(di.zone, *di.masters.begin()); | |
900 | } | |
901 | else if(dk.doesDNSSEC() && ! maxInception && ssr.d_freshness[di.id].theirInception) { | |
902 | L<<Logger::Warning<<"Domain '"<< di.zone<<"' is stale, master has signed"<<endl; | |
903 | addSuckRequest(di.zone, *di.masters.begin()); | |
904 | } | |
905 | else { | |
906 | L<<Logger::Warning<<"Domain '"<< di.zone<<"' is fresh, but RRSIGs differ, so DNSSEC is stale"<<endl; | |
907 | addSuckRequest(di.zone, *di.masters.begin()); | |
54b2edb4 | 908 | } |
3696224d BH |
909 | } |
910 | else { | |
8e90e428 | 911 | L<<Logger::Warning<<"Domain '"<< di.zone<<"' is stale, master serial "<<theirserial<<", our serial "<< ourserial <<endl; |
d3ee36f2 | 912 | addSuckRequest(di.zone, *di.masters.begin()); |
3696224d BH |
913 | } |
914 | } | |
68dae32c | 915 | } |