gecko-dev/netwerk/dns/TRRService.h

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4.5 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 TRRService_h_
#define TRRService_h_
#include "mozilla/Atomics.h"
#include "mozilla/DataStorage.h"
#include "nsHostResolver.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"
class nsIPrefBranch;
namespace mozilla {
namespace net {
class TRRService : public nsIObserver,
public nsITimerCallback,
public nsSupportsWeakReference,
public AHostResolver {
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSITIMERCALLBACK
TRRService();
nsresult Init();
nsresult Start();
bool Enabled();
uint32_t Mode() { return mMode; }
bool AllowRFC1918() { return mRfc1918; }
bool UseGET() { return mUseGET; }
bool EarlyAAAA() { return mEarlyAAAA; }
bool CheckIPv6Connectivity() { return mCheckIPv6Connectivity; }
bool WaitForAllResponses() { return mWaitForAllResponses; }
bool DisableIPv6() { return mDisableIPv6; }
bool DisableECS() { return mDisableECS; }
nsresult GetURI(nsCString& result);
nsresult GetCredentials(nsCString& result);
uint32_t GetRequestTimeout() { return mTRRTimeout; }
LookupStatus CompleteLookup(nsHostRecord*, nsresult, mozilla::net::AddrInfo*,
bool pb,
const nsACString& aOriginSuffix) override;
LookupStatus CompleteLookupByType(nsHostRecord*, nsresult,
const nsTArray<nsCString>*, uint32_t,
bool pb) override;
void TRRBlacklist(const nsACString& host, const nsACString& originSuffix,
bool privateBrowsing, bool aParentsToo);
bool IsTRRBlacklisted(const nsACString& aHost,
const nsACString& aOriginSuffix, bool aPrivateBrowsing,
bool aParentsToo);
bool IsExcludedFromTRR(const nsACString& aHost);
bool MaybeBootstrap(const nsACString& possible, nsACString& result);
enum TrrOkay { OKAY_NORMAL = 0, OKAY_TIMEOUT = 1, OKAY_BAD = 2 };
void TRRIsOkay(enum TrrOkay aReason);
private:
virtual ~TRRService();
nsresult ReadPrefs(const char* name);
void GetPrefBranch(nsIPrefBranch** result);
void MaybeConfirm();
void MaybeConfirm_locked();
bool mInitialized;
Atomic<uint32_t, Relaxed> mMode;
Atomic<uint32_t, Relaxed> mTRRBlacklistExpireTime;
Atomic<uint32_t, Relaxed> mTRRTimeout;
Mutex mLock;
nsCString mPrivateURI; // main thread only
nsCString mPrivateCred; // main thread only
nsCString mConfirmationNS;
nsCString mBootstrapAddr;
Atomic<bool, Relaxed> mWaitForCaptive; // wait for the captive portal to say
// OK before using TRR
Atomic<bool, Relaxed>
mRfc1918; // okay with local IP addresses in DOH responses?
Atomic<bool, Relaxed>
mCaptiveIsPassed; // set when captive portal check is passed
Atomic<bool, Relaxed> mUseGET; // do DOH using GET requests (instead of POST)
Atomic<bool, Relaxed> mEarlyAAAA; // allow use of AAAA results before A is in
Atomic<bool, Relaxed> mCheckIPv6Connectivity; // check IPv6 connectivity
Atomic<bool, Relaxed> mWaitForAllResponses; // Don't notify until all are in
Atomic<bool, Relaxed> mDisableIPv6; // don't even try
Atomic<bool, Relaxed> mDisableECS; // disable EDNS Client Subnet in requests
Atomic<uint32_t, Relaxed>
mDisableAfterFails; // this many fails in a row means failed TRR service
// TRR Blacklist storage
// mTRRBLStorage is only modified on the main thread, but we query whether it
// is initialized or not off the main thread as well. Therefore we need to
// lock while creating it and while accessing it off the main thread.
RefPtr<DataStorage> mTRRBLStorage;
Atomic<bool, Relaxed> mClearTRRBLStorage;
// A set of domains that we should not use TRR for.
nsTHashtable<nsCStringHashKey> mExcludedDomains;
enum ConfirmationState {
CONFIRM_INIT = 0,
CONFIRM_TRYING = 1,
CONFIRM_OK = 2,
CONFIRM_FAILED = 3
};
Atomic<ConfirmationState, Relaxed> mConfirmationState;
RefPtr<TRR> mConfirmer;
nsCOMPtr<nsITimer> mRetryConfirmTimer;
uint32_t mRetryConfirmInterval; // milliseconds until retry
Atomic<uint32_t, Relaxed> mTRRFailures;
};
extern TRRService* gTRRService;
} // namespace net
} // namespace mozilla
#endif // TRRService_h_