File: | var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp |
Warning: | line 120, column 16 Value stored to 'rectype' during its initialization is never read |
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1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
4 | |
5 | #include "TRRQuery.h" |
6 | |
7 | #include "mozilla/StaticPrefs_network.h" |
8 | #include "mozilla/Telemetry.h" |
9 | #include "nsQueryObject.h" |
10 | #include "TRR.h" |
11 | #include "TRRService.h" |
12 | // Put DNSLogging.h at the end to avoid LOG being overwritten by other headers. |
13 | #include "DNSLogging.h" |
14 | |
15 | namespace mozilla { |
16 | namespace net { |
17 | |
18 | static already_AddRefed<AddrInfo> merge_rrset(AddrInfo* rrto, |
19 | AddrInfo* rrfrom) { |
20 | MOZ_ASSERT(rrto && rrfrom)do { static_assert( mozilla::detail::AssertionConditionType< decltype(rrto && rrfrom)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(rrto && rrfrom))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("rrto && rrfrom" , "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 20); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rrto && rrfrom" ")"); do { *((volatile int*)__null) = 20; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
21 | // Each of the arguments are all-IPv4 or all-IPv6 hence judging |
22 | // by the first element. This is true only for TRR resolutions. |
23 | bool isIPv6 = rrfrom->Addresses().Length() > 0 && |
24 | rrfrom->Addresses()[0].raw.family == PR_AF_INET610; |
25 | |
26 | nsTArray<NetAddr> addresses; |
27 | if (isIPv6) { |
28 | addresses = rrfrom->Addresses().Clone(); |
29 | addresses.AppendElements(rrto->Addresses()); |
30 | } else { |
31 | addresses = rrto->Addresses().Clone(); |
32 | addresses.AppendElements(rrfrom->Addresses()); |
33 | } |
34 | auto builder = rrto->Build(); |
35 | builder.SetAddresses(std::move(addresses)); |
36 | return builder.Finish(); |
37 | } |
38 | |
39 | void TRRQuery::Cancel(nsresult aStatus) { |
40 | MutexAutoLock trrlock(mTrrLock); |
41 | if (mTrrA) { |
42 | mTrrA->Cancel(aStatus); |
43 | } |
44 | if (mTrrAAAA) { |
45 | mTrrAAAA->Cancel(aStatus); |
46 | } |
47 | if (mTrrByType) { |
48 | mTrrByType->Cancel(aStatus); |
49 | } |
50 | } |
51 | |
52 | void TRRQuery::MarkSendingTRR(TRR* trr, enum TrrType rectype, MutexAutoLock&) { |
53 | if (rectype == TRRTYPE_A) { |
54 | MOZ_ASSERT(!mTrrA)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mTrrA)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(!mTrrA))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mTrrA", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 54); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mTrrA" ")"); do { *((volatile int*)__null) = 54; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
55 | mTrrA = trr; |
56 | mTrrAUsed = STARTED; |
57 | } else if (rectype == TRRTYPE_AAAA) { |
58 | MOZ_ASSERT(!mTrrAAAA)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mTrrAAAA)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mTrrAAAA))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mTrrAAAA", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 58); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mTrrAAAA" ")" ); do { *((volatile int*)__null) = 58; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
59 | mTrrAAAA = trr; |
60 | mTrrAAAAUsed = STARTED; |
61 | } else { |
62 | LOG(("TrrLookup called with bad type set: %d\n", rectype))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TrrLookup called with bad type set: %d\n", rectype); } } while (0); |
63 | MOZ_ASSERT(0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(0)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("0", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 63); AnnotateMozCrashReason("MOZ_ASSERT" "(" "0" ")"); do { *((volatile int*)__null) = 63; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
64 | } |
65 | } |
66 | |
67 | void TRRQuery::PrepareQuery(enum TrrType aRecType, |
68 | nsTArray<RefPtr<TRR>>& aRequestsToSend) { |
69 | LOG(("TRR Resolve %s type %d\n", mRecord->host.get(), (int)aRecType))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TRR Resolve %s type %d\n", mRecord->host.get(), (int)aRecType ); } } while (0); |
70 | RefPtr<TRR> trr = new TRR(this, mRecord, aRecType); |
71 | |
72 | { |
73 | MutexAutoLock trrlock(mTrrLock); |
74 | MarkSendingTRR(trr, aRecType, trrlock); |
75 | aRequestsToSend.AppendElement(trr); |
76 | } |
77 | } |
78 | |
79 | bool TRRQuery::SendQueries(nsTArray<RefPtr<TRR>>& aRequestsToSend) { |
80 | bool madeQuery = false; |
81 | mTRRRequestCounter = aRequestsToSend.Length(); |
82 | for (const auto& request : aRequestsToSend) { |
83 | if (NS_SUCCEEDED(TRRService::Get()->DispatchTRRRequest(request))((bool)(__builtin_expect(!!(!NS_FAILED_impl(TRRService::Get() ->DispatchTRRRequest(request))), 1)))) { |
84 | madeQuery = true; |
85 | } else { |
86 | mTRRRequestCounter--; |
87 | MutexAutoLock trrlock(mTrrLock); |
88 | if (request == mTrrA) { |
89 | mTrrA = nullptr; |
90 | mTrrAUsed = INIT; |
91 | } |
92 | if (request == mTrrAAAA) { |
93 | mTrrAAAA = nullptr; |
94 | mTrrAAAAUsed = INIT; |
95 | } |
96 | } |
97 | } |
98 | aRequestsToSend.Clear(); |
99 | return madeQuery; |
100 | } |
101 | |
102 | nsresult TRRQuery::DispatchLookup(TRR* pushedTRR) { |
103 | mTrrStart = TimeStamp::Now(); |
104 | |
105 | if (!mRecord->IsAddrRecord()) { |
106 | return DispatchByTypeLookup(pushedTRR); |
107 | } |
108 | |
109 | RefPtr<AddrHostRecord> addrRec = do_QueryObject(mRecord); |
110 | MOZ_ASSERT(addrRec)do { static_assert( mozilla::detail::AssertionConditionType< decltype(addrRec)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(addrRec))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("addrRec", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 110); AnnotateMozCrashReason("MOZ_ASSERT" "(" "addrRec" ")" ); do { *((volatile int*)__null) = 110; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
111 | if (!addrRec) { |
112 | return NS_ERROR_UNEXPECTED; |
113 | } |
114 | |
115 | mTrrAUsed = INIT; |
116 | mTrrAAAAUsed = INIT; |
117 | |
118 | // Always issue both A and AAAA. |
119 | // When both are complete we filter out the unneeded results. |
120 | enum TrrType rectype = (mRecord->af == AF_INET610) ? TRRTYPE_AAAA : TRRTYPE_A; |
Value stored to 'rectype' during its initialization is never read | |
121 | |
122 | if (pushedTRR) { |
123 | MutexAutoLock trrlock(mTrrLock); |
124 | rectype = pushedTRR->Type(); |
125 | MarkSendingTRR(pushedTRR, rectype, trrlock); |
126 | return NS_OK; |
127 | } |
128 | |
129 | // Need to dispatch TRR requests after |mTrrA| and |mTrrAAAA| are set |
130 | // properly so as to avoid the race when CompleteLookup() is called at the |
131 | // same time. |
132 | nsTArray<RefPtr<TRR>> requestsToSend; |
133 | if ((mRecord->af == AF_UNSPEC0 || mRecord->af == AF_INET610) && |
134 | !StaticPrefs::network_dns_disableIPv6()) { |
135 | PrepareQuery(TRRTYPE_AAAA, requestsToSend); |
136 | } |
137 | if (mRecord->af == AF_UNSPEC0 || mRecord->af == AF_INET2) { |
138 | PrepareQuery(TRRTYPE_A, requestsToSend); |
139 | } |
140 | |
141 | if (SendQueries(requestsToSend)) { |
142 | return NS_OK; |
143 | } |
144 | |
145 | return NS_ERROR_UNKNOWN_HOST; |
146 | } |
147 | |
148 | nsresult TRRQuery::DispatchByTypeLookup(TRR* pushedTRR) { |
149 | RefPtr<TypeHostRecord> typeRec = do_QueryObject(mRecord); |
150 | MOZ_ASSERT(typeRec)do { static_assert( mozilla::detail::AssertionConditionType< decltype(typeRec)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(typeRec))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("typeRec", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 150); AnnotateMozCrashReason("MOZ_ASSERT" "(" "typeRec" ")" ); do { *((volatile int*)__null) = 150; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
151 | if (!typeRec) { |
152 | return NS_ERROR_UNEXPECTED; |
153 | } |
154 | |
155 | enum TrrType rectype; |
156 | |
157 | // XXX this could use a more extensible approach. |
158 | if (mRecord->type == nsIDNSService::RESOLVE_TYPE_TXT) { |
159 | rectype = TRRTYPE_TXT; |
160 | } else if (mRecord->type == nsIDNSService::RESOLVE_TYPE_HTTPSSVC) { |
161 | rectype = TRRTYPE_HTTPSSVC; |
162 | } else if (pushedTRR) { |
163 | rectype = pushedTRR->Type(); |
164 | } else { |
165 | MOZ_ASSERT(false, "Not an expected request type")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "Not an expected request type" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 165); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "Not an expected request type" ")"); do { *((volatile int*)__null ) = 165; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
166 | return NS_ERROR_UNKNOWN_HOST; |
167 | } |
168 | |
169 | LOG(("TRR Resolve %s type %d\n", typeRec->host.get(), (int)rectype))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TRR Resolve %s type %d\n", typeRec->host.get(), (int)rectype ); } } while (0); |
170 | RefPtr<TRR> trr = pushedTRR ? pushedTRR : new TRR(this, mRecord, rectype); |
171 | |
172 | if (pushedTRR || NS_SUCCEEDED(TRRService::Get()->DispatchTRRRequest(trr))((bool)(__builtin_expect(!!(!NS_FAILED_impl(TRRService::Get() ->DispatchTRRRequest(trr))), 1)))) { |
173 | MutexAutoLock trrlock(mTrrLock); |
174 | MOZ_ASSERT(!mTrrByType)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mTrrByType)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mTrrByType))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mTrrByType", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 174); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mTrrByType" ")"); do { *((volatile int*)__null) = 174; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
175 | mTrrByType = trr; |
176 | return NS_OK; |
177 | } |
178 | |
179 | return NS_ERROR_UNKNOWN_HOST; |
180 | } |
181 | |
182 | AHostResolver::LookupStatus TRRQuery::CompleteLookup( |
183 | nsHostRecord* rec, nsresult status, AddrInfo* aNewRRSet, bool pb, |
184 | const nsACString& aOriginsuffix, nsHostRecord::TRRSkippedReason aReason, |
185 | TRR* aTRRRequest) { |
186 | if (rec != mRecord) { |
187 | LOG(("TRRQuery::CompleteLookup - Pushed record. Go to resolver"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TRRQuery::CompleteLookup - Pushed record. Go to resolver") ; } } while (0); |
188 | return mHostResolver->CompleteLookup(rec, status, aNewRRSet, pb, |
189 | aOriginsuffix, aReason, aTRRRequest); |
190 | } |
191 | |
192 | LOG(("TRRQuery::CompleteLookup > host: %s", rec->host.get()))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TRRQuery::CompleteLookup > host: %s", rec->host.get( )); } } while (0); |
193 | |
194 | RefPtr<AddrInfo> newRRSet(aNewRRSet); |
195 | DNSResolverType resolverType = newRRSet->ResolverType(); |
196 | { |
197 | MutexAutoLock trrlock(mTrrLock); |
198 | if (newRRSet->TRRType() == TRRTYPE_A) { |
199 | MOZ_ASSERT(mTrrA)do { static_assert( mozilla::detail::AssertionConditionType< decltype(mTrrA)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(mTrrA))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("mTrrA", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 199); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mTrrA" ")"); do { *((volatile int*)__null) = 199; __attribute__((nomerge) ) ::abort(); } while (false); } } while (false); |
200 | mTRRAFailReason = aReason; |
201 | mTrrA = nullptr; |
202 | mTrrAUsed = NS_SUCCEEDED(status)((bool)(__builtin_expect(!!(!NS_FAILED_impl(status)), 1))) ? OK : FAILED; |
203 | MOZ_ASSERT(!mAddrInfoA)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mAddrInfoA)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mAddrInfoA))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mAddrInfoA", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 203); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mAddrInfoA" ")"); do { *((volatile int*)__null) = 203; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
204 | mAddrInfoA = newRRSet; |
205 | mAResult = status; |
206 | LOG(("A query status: 0x%x", static_cast<uint32_t>(status)))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "A query status: 0x%x", static_cast<uint32_t>(status) ); } } while (0); |
207 | } else if (newRRSet->TRRType() == TRRTYPE_AAAA) { |
208 | MOZ_ASSERT(mTrrAAAA)do { static_assert( mozilla::detail::AssertionConditionType< decltype(mTrrAAAA)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(mTrrAAAA))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("mTrrAAAA", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 208); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mTrrAAAA" ")" ); do { *((volatile int*)__null) = 208; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
209 | mTRRAAAAFailReason = aReason; |
210 | mTrrAAAA = nullptr; |
211 | mTrrAAAAUsed = NS_SUCCEEDED(status)((bool)(__builtin_expect(!!(!NS_FAILED_impl(status)), 1))) ? OK : FAILED; |
212 | MOZ_ASSERT(!mAddrInfoAAAA)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mAddrInfoAAAA)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mAddrInfoAAAA))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mAddrInfoAAAA" , "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 212); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!mAddrInfoAAAA" ")"); do { *((volatile int*)__null) = 212; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
213 | mAddrInfoAAAA = newRRSet; |
214 | mAAAAResult = status; |
215 | LOG(("AAAA query status: 0x%x", static_cast<uint32_t>(status)))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "AAAA query status: 0x%x", static_cast<uint32_t>(status )); } } while (0); |
216 | } else { |
217 | MOZ_ASSERT(0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(0)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("0", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 217); AnnotateMozCrashReason("MOZ_ASSERT" "(" "0" ")"); do { *((volatile int*)__null) = 217; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
218 | } |
219 | } |
220 | |
221 | if (NS_SUCCEEDED(status)((bool)(__builtin_expect(!!(!NS_FAILED_impl(status)), 1)))) { |
222 | mTRRSuccess++; |
223 | if (mTRRSuccess == 1) { |
224 | // Store the duration on first succesful TRR response. We |
225 | // don't know that there will be a second response nor can we |
226 | // tell which of two has useful data. |
227 | mTrrDuration = TimeStamp::Now() - mTrrStart; |
228 | } |
229 | } |
230 | |
231 | bool pendingRequest = false; |
232 | if (mTRRRequestCounter) { |
233 | mTRRRequestCounter--; |
234 | pendingRequest = (mTRRRequestCounter != 0); |
235 | } else { |
236 | MOZ_DIAGNOSTIC_ASSERT(false, "Request counter is messed up")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "Request counter is messed up" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 236); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "false" ") (" "Request counter is messed up" ")"); do { *((volatile int *)__null) = 236; __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
237 | } |
238 | if (pendingRequest) { // There are other outstanding requests |
239 | LOG(("CompleteLookup: waiting for all responses!\n"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "CompleteLookup: waiting for all responses!\n"); } } while ( 0); |
240 | return LOOKUP_OK; |
241 | } |
242 | |
243 | if (mRecord->af == AF_UNSPEC0) { |
244 | // merge successful records |
245 | if (mTrrAUsed == OK) { |
246 | LOG(("Have A response"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "Have A response"); } } while (0); |
247 | newRRSet = mAddrInfoA; |
248 | status = mAResult; |
249 | if (mTrrAAAAUsed == OK) { |
250 | LOG(("Merging A and AAAA responses"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "Merging A and AAAA responses"); } } while (0); |
251 | newRRSet = merge_rrset(newRRSet, mAddrInfoAAAA); |
252 | } |
253 | } else { |
254 | newRRSet = mAddrInfoAAAA; |
255 | status = mAAAAResult; |
256 | } |
257 | |
258 | if (NS_FAILED(status)((bool)(__builtin_expect(!!(NS_FAILED_impl(status)), 0))) && (mAAAAResult == NS_ERROR_DEFINITIVE_UNKNOWN_HOST || |
259 | mAResult == NS_ERROR_DEFINITIVE_UNKNOWN_HOST)) { |
260 | status = NS_ERROR_DEFINITIVE_UNKNOWN_HOST; |
261 | } |
262 | } else { |
263 | // If this is a failed AAAA request, but the server only has a A record, |
264 | // then we should not fallback to Do53. Instead we also send a A request |
265 | // and return NS_ERROR_DEFINITIVE_UNKNOWN_HOST if that succeeds. |
266 | if (NS_FAILED(status)((bool)(__builtin_expect(!!(NS_FAILED_impl(status)), 0))) && status != NS_ERROR_DEFINITIVE_UNKNOWN_HOST && |
267 | (mTrrAUsed == INIT || mTrrAAAAUsed == INIT)) { |
268 | if (newRRSet->TRRType() == TRRTYPE_A) { |
269 | LOG(("A lookup failed. Checking if AAAA record exists"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "A lookup failed. Checking if AAAA record exists"); } } while (0); |
270 | nsTArray<RefPtr<TRR>> requestsToSend; |
271 | PrepareQuery(TRRTYPE_AAAA, requestsToSend); |
272 | if (SendQueries(requestsToSend)) { |
273 | LOG(("Sent AAAA request"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "Sent AAAA request"); } } while (0); |
274 | return LOOKUP_OK; |
275 | } |
276 | } else if (newRRSet->TRRType() == TRRTYPE_AAAA) { |
277 | LOG(("AAAA lookup failed. Checking if A record exists"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "AAAA lookup failed. Checking if A record exists"); } } while (0); |
278 | nsTArray<RefPtr<TRR>> requestsToSend; |
279 | PrepareQuery(TRRTYPE_A, requestsToSend); |
280 | if (SendQueries(requestsToSend)) { |
281 | LOG(("Sent A request"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "Sent A request"); } } while (0); |
282 | return LOOKUP_OK; |
283 | } |
284 | } else { |
285 | MOZ_ASSERT(false, "Unexpected family")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "Unexpected family" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 285); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "Unexpected family" ")"); do { *((volatile int*)__null) = 285 ; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
286 | } |
287 | } |
288 | bool otherSucceeded = |
289 | mRecord->af == AF_INET610 ? mTrrAUsed == OK : mTrrAAAAUsed == OK; |
290 | LOG(("TRRQuery::CompleteLookup other request succeeded"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TRRQuery::CompleteLookup other request succeeded"); } } while (0); |
291 | |
292 | if (mRecord->af == AF_INET2) { |
293 | // return only A record |
294 | newRRSet = mAddrInfoA; |
295 | status = mAResult; |
296 | if (NS_FAILED(status)((bool)(__builtin_expect(!!(NS_FAILED_impl(status)), 0))) && |
297 | (otherSucceeded || mAAAAResult == NS_ERROR_DEFINITIVE_UNKNOWN_HOST)) { |
298 | LOG(("status set to NS_ERROR_DEFINITIVE_UNKNOWN_HOST"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "status set to NS_ERROR_DEFINITIVE_UNKNOWN_HOST"); } } while (0); |
299 | status = NS_ERROR_DEFINITIVE_UNKNOWN_HOST; |
300 | } |
301 | |
302 | } else if (mRecord->af == AF_INET610) { |
303 | // return only AAAA record |
304 | newRRSet = mAddrInfoAAAA; |
305 | status = mAAAAResult; |
306 | |
307 | if (NS_FAILED(status)((bool)(__builtin_expect(!!(NS_FAILED_impl(status)), 0))) && |
308 | (otherSucceeded || mAResult == NS_ERROR_DEFINITIVE_UNKNOWN_HOST)) { |
309 | LOG(("status set to NS_ERROR_DEFINITIVE_UNKNOWN_HOST"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "status set to NS_ERROR_DEFINITIVE_UNKNOWN_HOST"); } } while (0); |
310 | status = NS_ERROR_DEFINITIVE_UNKNOWN_HOST; |
311 | } |
312 | |
313 | } else { |
314 | MOZ_ASSERT(false, "Unexpected AF")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "Unexpected AF" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 314); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "Unexpected AF" ")"); do { *((volatile int*)__null) = 314; __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
315 | return LOOKUP_OK; |
316 | } |
317 | |
318 | // If this record failed, but there is a record for the other AF |
319 | // we prevent fallback to the native resolver. |
320 | } |
321 | |
322 | if (mTRRSuccess && mHostResolver->GetNCS() && |
323 | (mHostResolver->GetNCS()->GetNAT64() == |
324 | nsINetworkConnectivityService::OK) && |
325 | newRRSet) { |
326 | newRRSet = mHostResolver->GetNCS()->MapNAT64IPs(newRRSet); |
327 | } |
328 | |
329 | if (resolverType == DNSResolverType::TRR) { |
330 | if (mTrrAUsed == OK) { |
331 | AccumulateCategoricalKeyed( |
332 | TRRService::ProviderKey(), |
333 | Telemetry::LABELS_DNS_LOOKUP_DISPOSITION3::trrAOK); |
334 | } else if (mTrrAUsed == FAILED) { |
335 | AccumulateCategoricalKeyed( |
336 | TRRService::ProviderKey(), |
337 | Telemetry::LABELS_DNS_LOOKUP_DISPOSITION3::trrAFail); |
338 | } |
339 | |
340 | if (mTrrAAAAUsed == OK) { |
341 | AccumulateCategoricalKeyed( |
342 | TRRService::ProviderKey(), |
343 | Telemetry::LABELS_DNS_LOOKUP_DISPOSITION3::trrAAAAOK); |
344 | } else if (mTrrAAAAUsed == FAILED) { |
345 | AccumulateCategoricalKeyed( |
346 | TRRService::ProviderKey(), |
347 | Telemetry::LABELS_DNS_LOOKUP_DISPOSITION3::trrAAAAFail); |
348 | } |
349 | } |
350 | |
351 | mAddrInfoAAAA = nullptr; |
352 | mAddrInfoA = nullptr; |
353 | |
354 | MOZ_DIAGNOSTIC_ASSERT(!mCalledCompleteLookup,do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mCalledCompleteLookup)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mCalledCompleteLookup))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!mCalledCompleteLookup" " (" "must not call CompleteLookup more than once" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 355); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "!mCalledCompleteLookup" ") (" "must not call CompleteLookup more than once" ")"); do { *((volatile int*)__null) = 355; __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
355 | "must not call CompleteLookup more than once")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mCalledCompleteLookup)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mCalledCompleteLookup))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!mCalledCompleteLookup" " (" "must not call CompleteLookup more than once" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 355); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "!mCalledCompleteLookup" ") (" "must not call CompleteLookup more than once" ")"); do { *((volatile int*)__null) = 355; __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
356 | mCalledCompleteLookup = true; |
357 | return mHostResolver->CompleteLookup(rec, status, newRRSet, pb, aOriginsuffix, |
358 | aReason, aTRRRequest); |
359 | } |
360 | |
361 | AHostResolver::LookupStatus TRRQuery::CompleteLookupByType( |
362 | nsHostRecord* rec, nsresult status, |
363 | mozilla::net::TypeRecordResultType& aResult, |
364 | mozilla::net::TRRSkippedReason aReason, uint32_t aTtl, bool pb) { |
365 | if (rec != mRecord) { |
366 | LOG(("TRRQuery::CompleteLookup - Pushed record. Go to resolver"))do { const ::mozilla::LogModule* moz_real_module = mozilla::net ::gHostResolverLog; if ((__builtin_expect(!!(mozilla::detail:: log_test(moz_real_module, mozilla::LogLevel::Debug)), 0))) { mozilla ::detail::log_print(moz_real_module, mozilla::LogLevel::Debug , "TRRQuery::CompleteLookup - Pushed record. Go to resolver") ; } } while (0); |
367 | return mHostResolver->CompleteLookupByType(rec, status, aResult, aReason, |
368 | aTtl, pb); |
369 | } |
370 | |
371 | { |
372 | MutexAutoLock trrlock(mTrrLock); |
373 | mTrrByType = nullptr; |
374 | } |
375 | |
376 | // Unlike the address record, we store the duration regardless of the status. |
377 | mTrrDuration = TimeStamp::Now() - mTrrStart; |
378 | |
379 | MOZ_DIAGNOSTIC_ASSERT(!mCalledCompleteLookup,do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mCalledCompleteLookup)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mCalledCompleteLookup))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!mCalledCompleteLookup" " (" "must not call CompleteLookup more than once" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 380); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "!mCalledCompleteLookup" ") (" "must not call CompleteLookup more than once" ")"); do { *((volatile int*)__null) = 380; __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
380 | "must not call CompleteLookup more than once")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!mCalledCompleteLookup)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!mCalledCompleteLookup))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!mCalledCompleteLookup" " (" "must not call CompleteLookup more than once" ")", "/var/lib/jenkins/workspace/firefox-scan-build/netwerk/dns/TRRQuery.cpp" , 380); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "!mCalledCompleteLookup" ") (" "must not call CompleteLookup more than once" ")"); do { *((volatile int*)__null) = 380; __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
381 | mCalledCompleteLookup = true; |
382 | return mHostResolver->CompleteLookupByType(rec, status, aResult, aReason, |
383 | aTtl, pb); |
384 | } |
385 | |
386 | } // namespace net |
387 | } // namespace mozilla |