forked from mirrors/gecko-dev
114 lines
4.1 KiB
C++
114 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 ts=8 et tw=80 : */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_net_TRRQuery_h
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#define mozilla_net_TRRQuery_h
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#include "nsHostResolver.h"
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#include "DNSPacket.h"
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namespace mozilla {
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namespace net {
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class TRRQuery : public AHostResolver {
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TRRQuery, override)
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public:
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TRRQuery(nsHostResolver* aHostResolver, nsHostRecord* aHostRecord)
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: mHostResolver(aHostResolver),
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mRecord(aHostRecord),
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mTrrLock("TRRQuery.mTrrLock") {}
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nsresult DispatchLookup(TRR* pushedTRR = nullptr, bool aUseODoHProxy = false);
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void Cancel(nsresult aStatus);
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enum TRRState { INIT, STARTED, OK, FAILED };
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TRRState mTrrAUsed = INIT;
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TRRState mTrrAAAAUsed = INIT;
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TRRSkippedReason mTRRAFailReason = TRRSkippedReason::TRR_UNSET;
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TRRSkippedReason mTRRAAAAFailReason = TRRSkippedReason::TRR_UNSET;
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virtual LookupStatus CompleteLookup(nsHostRecord*, nsresult,
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mozilla::net::AddrInfo*, bool pb,
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const nsACString& aOriginsuffix,
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nsHostRecord::TRRSkippedReason aReason,
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TRR* aTRRRequest) override;
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virtual LookupStatus CompleteLookupByType(
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nsHostRecord*, nsresult, mozilla::net::TypeRecordResultType& aResult,
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uint32_t aTtl, bool pb) override;
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virtual nsresult GetHostRecord(const nsACString& host,
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const nsACString& aTrrServer, uint16_t type,
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uint16_t flags, uint16_t af, bool pb,
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const nsCString& originSuffix,
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nsHostRecord** result) override {
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if (!mHostResolver) {
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return NS_ERROR_FAILURE;
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}
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return mHostResolver->GetHostRecord(host, aTrrServer, type, flags, af, pb,
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originSuffix, result);
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}
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virtual nsresult TrrLookup_unlocked(
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nsHostRecord* rec, mozilla::net::TRR* pushedTRR = nullptr) override {
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if (!mHostResolver) {
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return NS_ERROR_FAILURE;
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}
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return mHostResolver->TrrLookup_unlocked(rec, pushedTRR);
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}
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virtual void MaybeRenewHostRecord(nsHostRecord* aRec) override {
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if (!mHostResolver) {
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return;
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}
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mHostResolver->MaybeRenewHostRecord(aRec);
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}
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mozilla::TimeDuration Duration() { return mTrrDuration; }
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private:
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nsresult DispatchByTypeLookup(TRR* pushedTRR = nullptr,
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bool aUseODoHProxy = false);
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private:
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~TRRQuery() = default;
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void MarkSendingTRR(TRR* trr, TrrType rectype, MutexAutoLock&);
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void PrepareQuery(bool aUseODoH, TrrType aRecType,
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nsTArray<RefPtr<TRR>>& aRequestsToSend);
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bool SendQueries(nsTArray<RefPtr<TRR>>& aRequestsToSend);
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RefPtr<nsHostResolver> mHostResolver;
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RefPtr<nsHostRecord> mRecord;
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Mutex mTrrLock
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MOZ_UNANNOTATED; // lock when accessing the mTrrA[AAA] pointers
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RefPtr<mozilla::net::TRR> mTrrA;
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RefPtr<mozilla::net::TRR> mTrrAAAA;
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RefPtr<mozilla::net::TRR> mTrrByType;
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// |mTRRRequestCounter| indicates the number of TRR requests that were
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// dispatched sucessfully. Generally, this counter is increased to 2 after
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// mTrrA and mTrrAAAA are dispatched, and is decreased by 1 when
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// CompleteLookup is called. Note that nsHostResolver::CompleteLookup is only
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// called when this counter equals to 0.
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Atomic<uint32_t> mTRRRequestCounter{0};
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uint8_t mTRRSuccess = 0; // number of successful TRR responses
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bool mUsingODoH = false;
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bool mCalledCompleteLookup = false;
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mozilla::TimeDuration mTrrDuration;
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mozilla::TimeStamp mTrrStart;
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RefPtr<mozilla::net::AddrInfo> mAddrInfoA;
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RefPtr<mozilla::net::AddrInfo> mAddrInfoAAAA;
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nsresult mAResult = NS_OK;
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nsresult mAAAAResult = NS_OK;
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};
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} // namespace net
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} // namespace mozilla
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#endif // mozilla_net_TRRQuery_h
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