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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et tw=80 : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#ifndef nsDNSService2_h__
#define nsDNSService2_h__
#include "nsClassHashtable.h"
#include "nsPIDNSService.h"
#include "nsIIDNService.h"
#include "nsIMemoryReporter.h"
#include "nsIObserver.h"
#include "nsHostResolver.h"
#include "nsString.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
#include "mozilla/Mutex.h"
#include "mozilla/Attributes.h"
#include "TRRService.h"
class nsAuthSSPI;
class nsDNSService final : public nsPIDNSService,
public nsIObserver,
public nsIMemoryReporter {
static already_AddRefed<nsIDNSService> GetXPCOMSingleton();
size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
bool GetOffline() const;
friend class nsAuthSSPI;
nsresult DeprecatedSyncResolve(
const nsACString& aHostname, uint32_t flags,
const mozilla::OriginAttributes& aOriginAttributes,
nsIDNSRecord** result);
nsresult ReadPrefs(const char* name);
static already_AddRefed<nsDNSService> GetSingleton();
uint16_t GetAFForLookup(const nsACString& host, uint32_t flags);
nsresult PreprocessHostname(bool aLocalDomain, const nsACString& aInput,
nsIIDNService* aIDN, nsACString& aACE);
nsresult AsyncResolveInternal(
const nsACString& aHostname, uint16_t type, uint32_t flags,
nsIDNSResolverInfo* aResolver, nsIDNSListener* aListener,
nsIEventTarget* target_,
const mozilla::OriginAttributes& aOriginAttributes,
nsICancelable** result);
nsresult CancelAsyncResolveInternal(
const nsACString& aHostname, uint16_t aType, uint32_t aFlags,
nsIDNSResolverInfo* aResolver, nsIDNSListener* aListener,
nsresult aReason, const mozilla::OriginAttributes& aOriginAttributes);
nsresult ResolveInternal(const nsACString& aHostname, uint32_t flags,
const mozilla::OriginAttributes& aOriginAttributes,
nsIDNSRecord** result);
bool DNSForbiddenByActiveProxy(const nsACString& aHostname, uint32_t flags);
// Locks the mutex and returns an addreffed resolver. May return null.
already_AddRefed<nsHostResolver> GetResolverLocked();
RefPtr<nsHostResolver> mResolver;
nsCOMPtr<nsIIDNService> mIDN;
// mLock protects access to mResolver, mLocalDomains, mIPv4OnlyDomains and
// mFailedSVCDomainNames
mozilla::Mutex mLock;
// mIPv4OnlyDomains is a comma-separated list of domains for which only
// IPv4 DNS lookups are performed. This allows the user to disable IPv6 on
// a per-domain basis and work around broken DNS servers. See bug 68796.
nsCString mIPv4OnlyDomains;
nsCString mForceResolve;
bool mDisableIPv6;
bool mDisablePrefetch;
bool mBlockDotOnion;
bool mNotifyResolution;
bool mOfflineLocalhost;
bool mForceResolveOn;
nsTHashtable<nsCStringHashKey> mLocalDomains;
RefPtr<mozilla::net::TRRService> mTrrService;
mozilla::Atomic<bool, mozilla::Relaxed> mHasSocksProxy;
uint32_t mResCacheEntries;
uint32_t mResCacheExpiration;
uint32_t mResCacheGrace;
bool mResolverPrefsUpdated;
bool mODoHActivated = false;
nsClassHashtable<nsCStringHashKey, nsTArray<nsCString>> mFailedSVCDomainNames;
#endif // nsDNSService2_h__