From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../url-classifier/nsUrlClassifierPrefixSet.h | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h (limited to 'toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h') diff --git a/toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h b/toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h new file mode 100644 index 0000000000..dac631359e --- /dev/null +++ b/toolkit/components/url-classifier/nsUrlClassifierPrefixSet.h @@ -0,0 +1,90 @@ +//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 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 nsUrlClassifierPrefixSet_h_ +#define nsUrlClassifierPrefixSet_h_ + +#include "nsIUrlClassifierPrefixSet.h" +#include "nsISupports.h" +#include "nsToolkitCompsCID.h" +#include "nsString.h" +#include "nsTArray.h" +#include "mozilla/FileUtils.h" +#include "mozilla/Mutex.h" +#include "mozilla/Poison.h" + +class nsIInputStream; +class nsIOutputStream; + +namespace mozilla { +namespace safebrowsing { + +class VariableLengthPrefixSet; + +} // namespace safebrowsing +} // namespace mozilla + +class nsUrlClassifierPrefixSet final : public nsIUrlClassifierPrefixSet { + public: + nsUrlClassifierPrefixSet(); + + NS_IMETHOD Init(const nsACString& aName) override; + NS_IMETHOD SetPrefixes(const uint32_t* aArray, uint32_t aLength) override; + NS_IMETHOD GetPrefixes(uint32_t* aCount, uint32_t** aPrefixes) override; + NS_IMETHOD Contains(uint32_t aPrefix, bool* aFound) override; + NS_IMETHOD IsEmpty(bool* aEmpty) override; + + nsresult GetPrefixesNative(FallibleTArray& aOutArray); + nsresult GetPrefixByIndex(uint32_t aIndex, uint32_t* aOutPrefix) const; + nsresult WritePrefixes(nsCOMPtr& out) const; + nsresult LoadPrefixes(nsCOMPtr& in); + uint32_t CalculatePreallocateSize() const; + uint32_t Length() const; + + size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const; + + NS_DECL_THREADSAFE_ISUPPORTS + + friend class mozilla::safebrowsing::VariableLengthPrefixSet; + + private: + virtual ~nsUrlClassifierPrefixSet(); + + static const uint32_t DELTAS_LIMIT = 120; + static const uint32_t MAX_INDEX_DIFF = (1 << 16); + static const uint32_t PREFIXSET_VERSION_MAGIC = 1; + + void Clear() MOZ_REQUIRES(mLock); + nsresult MakePrefixSet(const uint32_t* aArray, uint32_t aLength) + MOZ_REQUIRES(mLock); + uint32_t BinSearch(uint32_t start, uint32_t end, uint32_t target) const + MOZ_REQUIRES(mLock); + bool IsEmptyInternal() const MOZ_REQUIRES(mLock); + + // Lock to prevent races between the url-classifier thread (which does most + // of the operations) and the main thread (which does memory reporting). + // It should be held for all operations between Init() and destruction that + // touch this class's data members. + mutable mozilla::Mutex mLock; + // list of fully stored prefixes, that also form the + // start of a run of deltas in mIndexDeltas. + nsTArray mIndexPrefixes MOZ_GUARDED_BY(mLock); + // array containing arrays of deltas from indices. + // Index to the place that matches the closest lower + // prefix from mIndexPrefix. Then every "delta" corresponds + // to a prefix in the PrefixSet. + // This array could be empty when we decide to store all the prefixes + // in mIndexPrefixes. + nsTArray > mIndexDeltas MOZ_GUARDED_BY(mLock); + + // how many prefixes we have. + uint32_t mTotalPrefixes MOZ_GUARDED_BY(mLock); + + nsCString mName; // Set in Init() only + mozilla::CorruptionCanary mCanary; +}; + +#endif -- cgit v1.2.3