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-rw-r--r--netwerk/dns/nsDNSService2.h136
1 files changed, 136 insertions, 0 deletions
diff --git a/netwerk/dns/nsDNSService2.h b/netwerk/dns/nsDNSService2.h
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+++ b/netwerk/dns/nsDNSService2.h
@@ -0,0 +1,136 @@
+/* -*- 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 http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsDNSService2_h__
+#define nsDNSService2_h__
+
+#include "DNSServiceBase.h"
+#include "nsClassHashtable.h"
+#include "nsPIDNSService.h"
+#include "nsIIDNService.h"
+#include "nsIMemoryReporter.h"
+#include "nsIObserver.h"
+#include "nsHostResolver.h"
+#include "nsString.h"
+#include "nsTHashSet.h"
+#include "nsHashKeys.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/Attributes.h"
+#include "TRRService.h"
+
+class nsAuthSSPI;
+
+class DNSServiceWrapper final : public nsPIDNSService {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_FORWARD_NSPIDNSSERVICE(PIDNSService()->)
+ NS_FORWARD_NSIDNSSERVICE(DNSService()->)
+
+ DNSServiceWrapper() = default;
+
+ static already_AddRefed<nsIDNSService> GetSingleton();
+ static void SwitchToBackupDNSService();
+
+ private:
+ ~DNSServiceWrapper() = default;
+ nsIDNSService* DNSService();
+ nsPIDNSService* PIDNSService();
+
+ mozilla::Mutex mLock{"DNSServiceWrapper.mLock"};
+ nsCOMPtr<nsIDNSService> mDNSServiceInUse;
+ nsCOMPtr<nsIDNSService> mBackupDNSService;
+};
+
+class nsDNSService final : public mozilla::net::DNSServiceBase,
+ public nsPIDNSService,
+ public nsIMemoryReporter {
+ public:
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_NSPIDNSSERVICE
+ NS_DECL_NSIDNSSERVICE
+ NS_DECL_NSIOBSERVER
+ NS_DECL_NSIMEMORYREPORTER
+
+ nsDNSService() = default;
+
+ static already_AddRefed<nsIDNSService> GetXPCOMSingleton();
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
+
+ bool GetOffline() const;
+
+ protected:
+ friend class nsAuthSSPI;
+ friend class DNSServiceWrapper;
+
+ nsresult DeprecatedSyncResolve(
+ const nsACString& aHostname, nsIDNSService::DNSFlags flags,
+ const mozilla::OriginAttributes& aOriginAttributes,
+ nsIDNSRecord** result);
+
+ private:
+ ~nsDNSService() = default;
+
+ void ReadPrefs(const char* name) override;
+ static already_AddRefed<nsDNSService> GetSingleton();
+
+ uint16_t GetAFForLookup(const nsACString& host,
+ nsIDNSService::DNSFlags flags);
+
+ nsresult PreprocessHostname(bool aLocalDomain, const nsACString& aInput,
+ nsIIDNService* aIDN, nsACString& aACE);
+
+ nsresult AsyncResolveInternal(
+ const nsACString& aHostname, uint16_t type, nsIDNSService::DNSFlags flags,
+ nsIDNSAdditionalInfo* aInfo, nsIDNSListener* aListener,
+ nsIEventTarget* target_,
+ const mozilla::OriginAttributes& aOriginAttributes,
+ nsICancelable** result);
+
+ nsresult CancelAsyncResolveInternal(
+ const nsACString& aHostname, uint16_t aType,
+ nsIDNSService::DNSFlags aFlags, nsIDNSAdditionalInfo* aInfo,
+ nsIDNSListener* aListener, nsresult aReason,
+ const mozilla::OriginAttributes& aOriginAttributes);
+
+ nsresult ResolveInternal(const nsACString& aHostname,
+ nsIDNSService::DNSFlags flags,
+ const mozilla::OriginAttributes& aOriginAttributes,
+ nsIDNSRecord** result);
+
+ // 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 MOZ_UNANNOTATED{"nsDNSServer.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 = false;
+ bool mBlockDotOnion = false;
+ bool mNotifyResolution = false;
+ bool mOfflineLocalhost = false;
+ bool mForceResolveOn = false;
+ nsTHashSet<nsCString> mLocalDomains;
+ RefPtr<mozilla::net::TRRService> mTrrService;
+
+ uint32_t mResCacheEntries = 0;
+ uint32_t mResCacheExpiration = 0;
+ uint32_t mResCacheGrace = 0;
+ bool mResolverPrefsUpdated = false;
+ nsClassHashtable<nsCStringHashKey, nsTArray<nsCString>> mFailedSVCDomainNames;
+};
+
+already_AddRefed<nsIDNSService> GetOrInitDNSService();
+
+#endif // nsDNSService2_h__