gecko-dev/toolkit/components/url-classifier/Classifier.h

112 lines
3.2 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 Classifier_h__
#define Classifier_h__
#include "Entries.h"
#include "HashStore.h"
#include "ProtocolParser.h"
#include "LookupCache.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsIFile.h"
#include "nsICryptoHash.h"
#include "nsDataHashtable.h"
namespace mozilla {
namespace safebrowsing {
/**
* Maintains the stores and LookupCaches for the url classifier.
*/
class Classifier {
public:
Classifier();
~Classifier();
nsresult Open(nsIFile& aCacheDirectory);
void Close();
void Reset();
/**
* Get the list of active tables and their chunks in a format
* suitable for an update request.
*/
void TableRequest(nsACString& aResult);
/*
* Get all tables that we know about.
*/
nsresult ActiveTables(nsTArray<nsCString>& aTables);
/**
* Check a URL against the specified tables.
*/
nsresult Check(const nsACString& aSpec,
const nsACString& tables,
LookupResultArray& aResults);
/**
* Apply the table updates in the array. Takes ownership of
* the updates in the array and clears it. Wacky!
*/
nsresult ApplyUpdates(nsTArray<TableUpdate*>* aUpdates);
/**
* Failed update. Spoil the entries so we don't block hosts
* unnecessarily
*/
nsresult MarkSpoiled(nsTArray<nsCString>& aTables);
nsresult CacheCompletions(const CacheResultArray& aResults);
uint32_t GetHashKey(void) { return mHashKey; }
void SetFreshTime(uint32_t aTime) { mFreshTime = aTime; }
/*
* Get a bunch of extra prefixes to query for completion
* and mask the real entry being requested
*/
nsresult ReadNoiseEntries(const Prefix& aPrefix,
const nsACString& aTableName,
uint32_t aCount,
PrefixArray* aNoiseEntries);
static void SplitTables(const nsACString& str, nsTArray<nsCString>& tables);
private:
void DropStores();
nsresult CreateStoreDirectory();
nsresult SetupPathNames();
nsresult RecoverBackups();
nsresult CleanToDelete();
nsresult BackupTables();
nsresult RemoveBackupTables();
nsresult RegenActiveTables();
nsresult ScanStoreDir(nsTArray<nsCString>& aTables);
nsresult ApplyTableUpdates(nsTArray<TableUpdate*>* aUpdates,
const nsACString& aTable);
LookupCache *GetLookupCache(const nsACString& aTable);
// Root dir of the Local profile.
nsCOMPtr<nsIFile> mCacheDirectory;
// Main directory where to store the databases.
nsCOMPtr<nsIFile> mStoreDirectory;
// Used for atomically updating the other dirs.
nsCOMPtr<nsIFile> mBackupDirectory;
nsCOMPtr<nsIFile> mToDeleteDirectory;
nsCOMPtr<nsICryptoHash> mCryptoHash;
nsTArray<HashStore*> mHashStores;
nsTArray<LookupCache*> mLookupCaches;
nsTArray<nsCString> mActiveTablesCache;
uint32_t mHashKey;
// Stores the last time a given table was updated (seconds).
nsDataHashtable<nsCStringHashKey, int64_t> mTableFreshness;
uint32_t mFreshTime;
};
}
}
#endif