forked from mirrors/gecko-dev
1b74e11955
MozReview-Commit-ID: 3ifQtdOTulE --HG-- extra : rebase_source : d9854fba4e2dcbb7310ca73fec3305ba32bbb7ae
2520 lines
75 KiB
C++
2520 lines
75 KiB
C++
//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "nsArrayUtils.h"
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#include "nsCRT.h"
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#include "nsIDirectoryService.h"
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#include "nsIKeyModule.h"
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#include "nsIObserverService.h"
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#include "nsIPermissionManager.h"
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#include "nsIPrefBranch.h"
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#include "nsIPrefService.h"
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#include "nsIProperties.h"
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#include "nsToolkitCompsCID.h"
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#include "nsIXULRuntime.h"
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#include "nsUrlClassifierDBService.h"
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#include "nsUrlClassifierUtils.h"
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#include "nsUrlClassifierProxies.h"
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#include "nsURILoader.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsTArray.h"
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#include "nsNetCID.h"
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#include "nsThreadUtils.h"
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#include "nsProxyRelease.h"
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#include "nsString.h"
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#include "mozilla/Atomics.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/ErrorNames.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/Logging.h"
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#include "prnetdb.h"
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#include "Entries.h"
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#include "HashStore.h"
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#include "Classifier.h"
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#include "ProtocolParser.h"
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#include "mozilla/Attributes.h"
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#include "nsIPrincipal.h"
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#include "Classifier.h"
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#include "ProtocolParser.h"
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#include "nsContentUtils.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/PermissionMessageUtils.h"
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#include "mozilla/dom/URLClassifierChild.h"
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#include "mozilla/ipc/URIUtils.h"
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#include "nsProxyRelease.h"
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#include "UrlClassifierTelemetryUtils.h"
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#include "nsIURLFormatter.h"
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#include "nsIUploadChannel.h"
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#include "nsStringStream.h"
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#include "nsNetUtil.h"
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#include "nsToolkitCompsCID.h"
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#include "nsIClassifiedChannel.h"
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namespace mozilla {
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namespace safebrowsing {
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nsresult
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TablesToResponse(const nsACString& tables)
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{
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if (tables.IsEmpty()) {
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return NS_OK;
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}
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// We don't check mCheckMalware and friends because disabled tables are
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// never included
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if (FindInReadable(NS_LITERAL_CSTRING("-malware-"), tables)) {
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return NS_ERROR_MALWARE_URI;
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}
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if (FindInReadable(NS_LITERAL_CSTRING("-phish-"), tables)) {
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return NS_ERROR_PHISHING_URI;
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}
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if (FindInReadable(NS_LITERAL_CSTRING("-unwanted-"), tables)) {
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return NS_ERROR_UNWANTED_URI;
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}
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if (FindInReadable(NS_LITERAL_CSTRING("-track-"), tables)) {
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return NS_ERROR_TRACKING_URI;
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}
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if (FindInReadable(NS_LITERAL_CSTRING("-block-"), tables)) {
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return NS_ERROR_BLOCKED_URI;
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}
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if (FindInReadable(NS_LITERAL_CSTRING("-harmful-"), tables)) {
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return NS_ERROR_HARMFUL_URI;
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}
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return NS_OK;
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}
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} // namespace safebrowsing
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} // namespace mozilla
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using namespace mozilla;
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using namespace mozilla::safebrowsing;
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// MOZ_LOG=UrlClassifierDbService:5
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LazyLogModule gUrlClassifierDbServiceLog("UrlClassifierDbService");
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#define LOG(args) MOZ_LOG(gUrlClassifierDbServiceLog, mozilla::LogLevel::Debug, args)
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#define LOG_ENABLED() MOZ_LOG_TEST(gUrlClassifierDbServiceLog, mozilla::LogLevel::Debug)
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#define GETHASH_NOISE_PREF "urlclassifier.gethashnoise"
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#define GETHASH_NOISE_DEFAULT 4
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// 30 minutes as the maximum negative cache duration.
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#define MAXIMUM_NEGATIVE_CACHE_DURATION_SEC (30 * 60 * 1000)
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class nsUrlClassifierDBServiceWorker;
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// Singleton instance.
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static nsUrlClassifierDBService* sUrlClassifierDBService;
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nsIThread* nsUrlClassifierDBService::gDbBackgroundThread = nullptr;
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// Once we've committed to shutting down, don't do work in the background
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// thread.
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static bool gShuttingDownThread = false;
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static uint32_t sGethashNoise = GETHASH_NOISE_DEFAULT;
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NS_IMPL_ISUPPORTS(nsUrlClassifierDBServiceWorker,
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nsIUrlClassifierDBService)
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nsUrlClassifierDBServiceWorker::nsUrlClassifierDBServiceWorker()
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: mInStream(false)
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, mGethashNoise(0)
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, mPendingLookupLock("nsUrlClassifierDBServerWorker.mPendingLookupLock")
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{
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}
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nsUrlClassifierDBServiceWorker::~nsUrlClassifierDBServiceWorker()
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{
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NS_ASSERTION(!mClassifier,
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"Db connection not closed, leaking memory! Call CloseDb "
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"to close the connection.");
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}
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nsresult
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nsUrlClassifierDBServiceWorker::Init(uint32_t aGethashNoise,
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nsCOMPtr<nsIFile> aCacheDir,
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nsUrlClassifierDBService *aDBService)
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{
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mGethashNoise = aGethashNoise;
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mCacheDir = aCacheDir;
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mDBService = aDBService;
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ResetUpdate();
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return NS_OK;
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}
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nsresult
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nsUrlClassifierDBServiceWorker::QueueLookup(const nsACString& spec,
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const nsACString& tables,
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nsIUrlClassifierLookupCallback* callback)
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{
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MutexAutoLock lock(mPendingLookupLock);
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if (gShuttingDownThread) {
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return NS_ERROR_ABORT;
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}
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PendingLookup* lookup = mPendingLookups.AppendElement(fallible);
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if (!lookup) return NS_ERROR_OUT_OF_MEMORY;
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lookup->mStartTime = TimeStamp::Now();
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lookup->mKey = spec;
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lookup->mCallback = callback;
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lookup->mTables = tables;
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return NS_OK;
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}
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nsresult
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nsUrlClassifierDBServiceWorker::DoLocalLookup(const nsACString& spec,
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const nsACString& tables,
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LookupResultArray* results)
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{
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if (gShuttingDownThread) {
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return NS_ERROR_ABORT;
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}
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MOZ_ASSERT(!NS_IsMainThread(), "DoLocalLookup must be on background thread");
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if (!results) {
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return NS_ERROR_FAILURE;
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}
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// Bail if we haven't been initialized on the background thread.
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if (!mClassifier) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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// We ignore failures from Check because we'd rather return the
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// results that were found than fail.
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mClassifier->Check(spec, tables, *results);
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LOG(("Found %zu results.", results->Length()));
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return NS_OK;
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}
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static nsresult
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ProcessLookupResults(LookupResultArray* results, nsTArray<nsCString>& tables)
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{
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// Build the result array.
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for (uint32_t i = 0; i < results->Length(); i++) {
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LookupResult& result = results->ElementAt(i);
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MOZ_ASSERT(!result.mNoise, "Lookup results should not have noise added");
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LOG(("Found result from table %s", result.mTableName.get()));
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if (tables.IndexOf(result.mTableName) == nsTArray<nsCString>::NoIndex) {
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tables.AppendElement(result.mTableName);
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}
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}
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return NS_OK;
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}
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/**
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* Lookup up a key in the database is a two step process:
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*
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* a) First we look for any Entries in the database that might apply to this
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* url. For each URL there are one or two possible domain names to check:
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* the two-part domain name (example.com) and the three-part name
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* (www.example.com). We check the database for both of these.
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* b) If we find any entries, we check the list of fragments for that entry
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* against the possible subfragments of the URL as described in the
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* "Simplified Regular Expression Lookup" section of the protocol doc.
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*/
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nsresult
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nsUrlClassifierDBServiceWorker::DoLookup(const nsACString& spec,
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const nsACString& tables,
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nsIUrlClassifierLookupCallback* c)
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{
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if (gShuttingDownThread) {
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c->LookupComplete(nullptr);
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return NS_ERROR_NOT_INITIALIZED;
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}
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PRIntervalTime clockStart = 0;
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if (LOG_ENABLED()) {
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clockStart = PR_IntervalNow();
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}
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nsAutoPtr<LookupResultArray> results(new (fallible) LookupResultArray());
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if (!results) {
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c->LookupComplete(nullptr);
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsresult rv = DoLocalLookup(spec, tables, results);
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if (NS_FAILED(rv)) {
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c->LookupComplete(nullptr);
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return rv;
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}
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LOG(("Found %zu results.", results->Length()));
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if (LOG_ENABLED()) {
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PRIntervalTime clockEnd = PR_IntervalNow();
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LOG(("query took %dms\n",
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PR_IntervalToMilliseconds(clockEnd - clockStart)));
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}
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for (uint32_t i = 0; i < results->Length(); i++) {
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const LookupResult& lookupResult = results->ElementAt(i);
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if (!lookupResult.Confirmed() &&
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mDBService->CanComplete(lookupResult.mTableName)) {
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// We're going to be doing a gethash request, add some extra entries.
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// Note that we cannot pass the first two by reference, because we
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// add to completes, whicah can cause completes to reallocate and move.
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AddNoise(lookupResult.hash.fixedLengthPrefix,
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lookupResult.mTableName,
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mGethashNoise, *results);
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break;
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}
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}
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// At this point ownership of 'results' is handed to the callback.
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c->LookupComplete(results.forget());
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return NS_OK;
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}
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nsresult
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nsUrlClassifierDBServiceWorker::HandlePendingLookups()
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{
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if (gShuttingDownThread) {
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return NS_ERROR_ABORT;
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}
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MutexAutoLock lock(mPendingLookupLock);
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while (mPendingLookups.Length() > 0) {
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PendingLookup lookup = mPendingLookups[0];
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mPendingLookups.RemoveElementAt(0);
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{
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MutexAutoUnlock unlock(mPendingLookupLock);
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DoLookup(lookup.mKey, lookup.mTables, lookup.mCallback);
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}
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double lookupTime = (TimeStamp::Now() - lookup.mStartTime).ToMilliseconds();
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Telemetry::Accumulate(Telemetry::URLCLASSIFIER_LOOKUP_TIME_2,
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static_cast<uint32_t>(lookupTime));
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}
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return NS_OK;
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}
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nsresult
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nsUrlClassifierDBServiceWorker::AddNoise(const Prefix aPrefix,
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const nsCString tableName,
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uint32_t aCount,
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LookupResultArray& results)
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{
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if (gShuttingDownThread) {
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return NS_ERROR_ABORT;
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}
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if (aCount < 1) {
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return NS_OK;
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}
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PrefixArray noiseEntries;
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nsresult rv = mClassifier->ReadNoiseEntries(aPrefix, tableName,
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aCount, &noiseEntries);
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NS_ENSURE_SUCCESS(rv, rv);
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for (uint32_t i = 0; i < noiseEntries.Length(); i++) {
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LookupResult *result = results.AppendElement(fallible);
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if (!result) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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result->hash.fixedLengthPrefix = noiseEntries[i];
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result->mNoise = true;
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result->mPartialHashLength = PREFIX_SIZE; // Noise is always 4-byte,
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result->mTableName.Assign(tableName);
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}
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return NS_OK;
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}
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// Lookup a key in the db.
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NS_IMETHODIMP
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nsUrlClassifierDBServiceWorker::Lookup(nsIPrincipal* aPrincipal,
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const nsACString& aTables,
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nsIUrlClassifierCallback* c)
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{
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if (gShuttingDownThread) {
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return NS_ERROR_ABORT;
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}
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return HandlePendingLookups();
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}
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NS_IMETHODIMP
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nsUrlClassifierDBServiceWorker::GetTables(nsIUrlClassifierCallback* c)
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{
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if (gShuttingDownThread) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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nsresult rv = OpenDb();
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if (NS_FAILED(rv)) {
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NS_ERROR("Unable to open SafeBrowsing database");
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return NS_ERROR_FAILURE;
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}
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoCString response;
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mClassifier->TableRequest(response);
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LOG(("GetTables: %s", response.get()));
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c->HandleEvent(response);
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return rv;
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}
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void
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nsUrlClassifierDBServiceWorker::ResetStream()
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{
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LOG(("ResetStream"));
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mInStream = false;
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mProtocolParser = nullptr;
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}
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void
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nsUrlClassifierDBServiceWorker::ResetUpdate()
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{
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LOG(("ResetUpdate"));
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mUpdateWaitSec = 0;
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mUpdateStatus = NS_OK;
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mUpdateObserver = nullptr;
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}
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NS_IMETHODIMP
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nsUrlClassifierDBServiceWorker::SetHashCompleter(const nsACString &tableName,
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nsIUrlClassifierHashCompleter *completer)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsUrlClassifierDBServiceWorker::BeginUpdate(nsIUrlClassifierUpdateObserver *observer,
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const nsACString &tables)
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{
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LOG(("nsUrlClassifierDBServiceWorker::BeginUpdate [%s]", PromiseFlatCString(tables).get()));
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if (gShuttingDownThread) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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NS_ENSURE_STATE(!mUpdateObserver);
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nsresult rv = OpenDb();
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if (NS_FAILED(rv)) {
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NS_ERROR("Unable to open SafeBrowsing database");
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return NS_ERROR_FAILURE;
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}
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mUpdateStatus = NS_OK;
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mUpdateObserver = observer;
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Classifier::SplitTables(tables, mUpdateTables);
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return NS_OK;
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}
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// Called from the stream updater.
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NS_IMETHODIMP
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nsUrlClassifierDBServiceWorker::BeginStream(const nsACString &table)
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{
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LOG(("nsUrlClassifierDBServiceWorker::BeginStream"));
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MOZ_ASSERT(!NS_IsMainThread(), "Streaming must be on the background thread");
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if (gShuttingDownThread) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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NS_ENSURE_STATE(mUpdateObserver);
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NS_ENSURE_STATE(!mInStream);
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mInStream = true;
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NS_ASSERTION(!mProtocolParser, "Should not have a protocol parser.");
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// Check if we should use protobuf to parse the update.
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bool useProtobuf = false;
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for (size_t i = 0; i < mUpdateTables.Length(); i++) {
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bool isCurProtobuf =
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StringEndsWith(mUpdateTables[i], NS_LITERAL_CSTRING("-proto"));
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if (0 == i) {
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// Use the first table name to decice if all the subsequent tables
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// should be '-proto'.
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useProtobuf = isCurProtobuf;
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continue;
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}
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if (useProtobuf != isCurProtobuf) {
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NS_WARNING("Cannot mix 'proto' tables with other types "
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"within the same provider.");
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break;
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}
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}
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mProtocolParser = (useProtobuf ? static_cast<ProtocolParser*>(new (fallible)
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ProtocolParserProtobuf())
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: static_cast<ProtocolParser*>(new (fallible)
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ProtocolParserV2()));
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if (!mProtocolParser) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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if (!table.IsEmpty()) {
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mProtocolParser->SetCurrentTable(table);
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}
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mProtocolParser->SetRequestedTables(mUpdateTables);
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return NS_OK;
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}
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/**
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* Updating the database:
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*
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* The Update() method takes a series of chunks separated with control data,
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* as described in
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* http://code.google.com/p/google-safe-browsing/wiki/Protocolv2Spec
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*
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* It will iterate through the control data until it reaches a chunk. By
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* the time it reaches a chunk, it should have received
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* a) the table to which this chunk applies
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* b) the type of chunk (add, delete, expire add, expire delete).
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* c) the chunk ID
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* d) the length of the chunk.
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*
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* For add and subtract chunks, it needs to read the chunk data (expires
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* don't have any data). Chunk data is a list of URI fragments whose
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* encoding depends on the type of table (which is indicated by the end
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* of the table name):
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* a) tables ending with -exp are a zlib-compressed list of URI fragments
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* separated by newlines.
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* b) tables ending with -sha128 have the form
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* [domain][N][frag0]...[fragN]
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* 16 1 16 16
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* If N is 0, the domain is reused as a fragment.
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* c) any other tables are assumed to be a plaintext list of URI fragments
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* separated by newlines.
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*
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* Update() can be fed partial data; It will accumulate data until there is
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* enough to act on. Finish() should be called when there will be no more
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* data.
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*/
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NS_IMETHODIMP
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nsUrlClassifierDBServiceWorker::UpdateStream(const nsACString& chunk)
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{
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if (gShuttingDownThread) {
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return NS_ERROR_NOT_INITIALIZED;
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|
}
|
|
|
|
NS_ENSURE_STATE(mInStream);
|
|
|
|
HandlePendingLookups();
|
|
|
|
// Feed the chunk to the parser.
|
|
return mProtocolParser->AppendStream(chunk);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::FinishStream()
|
|
{
|
|
if (gShuttingDownThread) {
|
|
LOG(("shutting down"));
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
NS_ENSURE_STATE(mInStream);
|
|
NS_ENSURE_STATE(mUpdateObserver);
|
|
|
|
mInStream = false;
|
|
|
|
mProtocolParser->End();
|
|
|
|
if (NS_SUCCEEDED(mProtocolParser->Status())) {
|
|
if (mProtocolParser->UpdateWaitSec()) {
|
|
mUpdateWaitSec = mProtocolParser->UpdateWaitSec();
|
|
}
|
|
// XXX: Only allow forwards from the initial update?
|
|
const nsTArray<ProtocolParser::ForwardedUpdate> &forwards =
|
|
mProtocolParser->Forwards();
|
|
for (uint32_t i = 0; i < forwards.Length(); i++) {
|
|
const ProtocolParser::ForwardedUpdate &forward = forwards[i];
|
|
mUpdateObserver->UpdateUrlRequested(forward.url, forward.table);
|
|
}
|
|
// Hold on to any TableUpdate objects that were created by the
|
|
// parser.
|
|
mTableUpdates.AppendElements(mProtocolParser->GetTableUpdates());
|
|
mProtocolParser->ForgetTableUpdates();
|
|
|
|
#ifdef MOZ_SAFEBROWSING_DUMP_FAILED_UPDATES
|
|
// The assignment involves no string copy since the source string is sharable.
|
|
mRawTableUpdates = mProtocolParser->GetRawTableUpdates();
|
|
#endif
|
|
} else {
|
|
LOG(("nsUrlClassifierDBService::FinishStream Failed to parse the stream "
|
|
"using mProtocolParser."));
|
|
mUpdateStatus = mProtocolParser->Status();
|
|
}
|
|
mUpdateObserver->StreamFinished(mProtocolParser->Status(), 0);
|
|
|
|
if (NS_SUCCEEDED(mUpdateStatus)) {
|
|
if (mProtocolParser->ResetRequested()) {
|
|
mClassifier->ResetTables(Classifier::Clear_All, mUpdateTables);
|
|
}
|
|
} else {
|
|
mUpdateStatus = NS_ERROR_UC_UPDATE_PROTOCOL_PARSER_ERROR;
|
|
}
|
|
|
|
mProtocolParser = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::FinishUpdate()
|
|
{
|
|
LOG(("nsUrlClassifierDBServiceWorker::FinishUpdate"));
|
|
|
|
MOZ_ASSERT(!NS_IsMainThread(), "nsUrlClassifierDBServiceWorker::FinishUpdate "
|
|
"NUST NOT be on the main thread.");
|
|
|
|
if (gShuttingDownThread) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
MOZ_ASSERT(!mProtocolParser, "Should have been nulled out in FinishStream() "
|
|
"or never created.");
|
|
|
|
NS_ENSURE_STATE(mUpdateObserver);
|
|
|
|
if (NS_FAILED(mUpdateStatus)) {
|
|
LOG(("nsUrlClassifierDBServiceWorker::FinishUpdate() Not running "
|
|
"ApplyUpdate() since the update has already failed."));
|
|
return NotifyUpdateObserver(mUpdateStatus);
|
|
}
|
|
|
|
if (mTableUpdates.IsEmpty()) {
|
|
LOG(("Nothing to update. Just notify update observer."));
|
|
return NotifyUpdateObserver(NS_OK);
|
|
}
|
|
|
|
RefPtr<nsUrlClassifierDBServiceWorker> self = this;
|
|
nsresult rv = mClassifier->AsyncApplyUpdates(&mTableUpdates,
|
|
[=] (nsresult aRv) -> void {
|
|
#ifdef MOZ_SAFEBROWSING_DUMP_FAILED_UPDATES
|
|
if (NS_FAILED(aRv) &&
|
|
NS_ERROR_OUT_OF_MEMORY != aRv &&
|
|
NS_ERROR_UC_UPDATE_SHUTDOWNING != aRv) {
|
|
self->mClassifier->DumpRawTableUpdates(mRawTableUpdates);
|
|
}
|
|
// Invalidate the raw table updates.
|
|
self->mRawTableUpdates = EmptyCString();
|
|
#endif
|
|
|
|
self->NotifyUpdateObserver(aRv);
|
|
});
|
|
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("Failed to start async update. Notify immediately."));
|
|
NotifyUpdateObserver(rv);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBServiceWorker::NotifyUpdateObserver(nsresult aUpdateStatus)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread(), "nsUrlClassifierDBServiceWorker::NotifyUpdateObserver "
|
|
"NUST NOT be on the main thread.");
|
|
|
|
LOG(("nsUrlClassifierDBServiceWorker::NotifyUpdateObserver"));
|
|
|
|
// We've either
|
|
// 1) failed starting a download stream
|
|
// 2) succeeded in starting a download stream but failed to obtain
|
|
// table updates
|
|
// 3) succeeded in obtaining table updates but failed to build new
|
|
// tables.
|
|
// 4) succeeded in building new tables but failed to take them.
|
|
// 5) succeeded in taking new tables.
|
|
|
|
mUpdateStatus = aUpdateStatus;
|
|
|
|
nsCOMPtr<nsIUrlClassifierUtils> urlUtil =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID);
|
|
|
|
nsCString provider;
|
|
// Assume that all the tables in update should have the same provider.
|
|
urlUtil->GetTelemetryProvider(mUpdateTables.SafeElementAt(0, EmptyCString()), provider);
|
|
|
|
nsresult updateStatus = mUpdateStatus;
|
|
if (NS_FAILED(mUpdateStatus)) {
|
|
updateStatus = NS_ERROR_GET_MODULE(mUpdateStatus) == NS_ERROR_MODULE_URL_CLASSIFIER ?
|
|
mUpdateStatus : NS_ERROR_UC_UPDATE_UNKNOWN;
|
|
}
|
|
|
|
// Do not record telemetry for testing tables.
|
|
if (!provider.EqualsLiteral(TESTING_TABLE_PROVIDER_NAME)) {
|
|
Telemetry::Accumulate(Telemetry::URLCLASSIFIER_UPDATE_ERROR, provider,
|
|
NS_ERROR_GET_CODE(updateStatus));
|
|
}
|
|
|
|
if (!mUpdateObserver) {
|
|
// In the normal shutdown process, CancelUpdate() would NOT be
|
|
// called prior to NotifyUpdateObserver(). However, CancelUpdate()
|
|
// is a public API which can be called in the test case at any point.
|
|
// If the call sequence is FinishUpdate() then CancelUpdate(), the later
|
|
// might be executed before NotifyUpdateObserver() which is triggered
|
|
// by the update thread. In this case, we will get null mUpdateObserver.
|
|
NS_WARNING("CancelUpdate() is called before we asynchronously call "
|
|
"NotifyUpdateObserver() in FinishUpdate().");
|
|
|
|
// The DB cleanup will be done in CancelUpdate() so we can just return.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Null out mUpdateObserver before notifying so that BeginUpdate()
|
|
// becomes available prior to callback.
|
|
nsCOMPtr<nsIUrlClassifierUpdateObserver> updateObserver = nullptr;
|
|
updateObserver.swap(mUpdateObserver);
|
|
|
|
if (NS_SUCCEEDED(mUpdateStatus)) {
|
|
LOG(("Notifying success: %d", mUpdateWaitSec));
|
|
updateObserver->UpdateSuccess(mUpdateWaitSec);
|
|
} else if (NS_ERROR_NOT_IMPLEMENTED == mUpdateStatus) {
|
|
LOG(("Treating NS_ERROR_NOT_IMPLEMENTED a successful update "
|
|
"but still mark it spoiled."));
|
|
updateObserver->UpdateSuccess(0);
|
|
mClassifier->ResetTables(Classifier::Clear_Cache, mUpdateTables);
|
|
} else {
|
|
if (LOG_ENABLED()) {
|
|
nsAutoCString errorName;
|
|
mozilla::GetErrorName(mUpdateStatus, errorName);
|
|
LOG(("Notifying error: %s (%" PRIu32 ")", errorName.get(),
|
|
static_cast<uint32_t>(mUpdateStatus)));
|
|
}
|
|
|
|
updateObserver->UpdateError(mUpdateStatus);
|
|
/*
|
|
* mark the tables as spoiled(clear cache in LookupCache), we don't want to
|
|
* block hosts longer than normal because our update failed
|
|
*/
|
|
mClassifier->ResetTables(Classifier::Clear_Cache, mUpdateTables);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::ResetDatabase()
|
|
{
|
|
nsresult rv = OpenDb();
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mClassifier->Reset();
|
|
}
|
|
|
|
rv = CloseDb();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::ReloadDatabase()
|
|
{
|
|
nsTArray<nsCString> tables;
|
|
nsresult rv = mClassifier->ActiveTables(tables);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// This will null out mClassifier
|
|
rv = CloseDb();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Create new mClassifier and load prefixset and completions from disk.
|
|
rv = OpenDb();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::ClearCache()
|
|
{
|
|
nsTArray<nsCString> tables;
|
|
nsresult rv = mClassifier->ActiveTables(tables);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mClassifier->ResetTables(Classifier::Clear_Cache, tables);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::CancelUpdate()
|
|
{
|
|
LOG(("nsUrlClassifierDBServiceWorker::CancelUpdate"));
|
|
|
|
if (mUpdateObserver) {
|
|
LOG(("UpdateObserver exists, cancelling"));
|
|
|
|
mUpdateStatus = NS_BINDING_ABORTED;
|
|
|
|
mUpdateObserver->UpdateError(mUpdateStatus);
|
|
|
|
/*
|
|
* mark the tables as spoiled(clear cache in LookupCache), we don't want to
|
|
* block hosts longer than normal because our update failed
|
|
*/
|
|
mClassifier->ResetTables(Classifier::Clear_Cache, mUpdateTables);
|
|
|
|
ResetStream();
|
|
ResetUpdate();
|
|
} else {
|
|
LOG(("No UpdateObserver, nothing to cancel"));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsUrlClassifierDBServiceWorker::FlushAndDisableAsyncUpdate()
|
|
{
|
|
LOG(("nsUrlClassifierDBServiceWorker::FlushAndDisableAsyncUpdate()"));
|
|
|
|
if (mClassifier) {
|
|
mClassifier->FlushAndDisableAsyncUpdate();
|
|
}
|
|
}
|
|
|
|
// Allows the main thread to delete the connection which may be in
|
|
// a background thread.
|
|
// XXX This could be turned into a single shutdown event so the logic
|
|
// is simpler in nsUrlClassifierDBService::Shutdown.
|
|
nsresult
|
|
nsUrlClassifierDBServiceWorker::CloseDb()
|
|
{
|
|
if (mClassifier) {
|
|
mClassifier->Close();
|
|
mClassifier = nullptr;
|
|
}
|
|
|
|
LOG(("urlclassifier db closed\n"));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBServiceWorker::CacheCompletions(CacheResultArray *results)
|
|
{
|
|
if (gShuttingDownThread) {
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
LOG(("nsUrlClassifierDBServiceWorker::CacheCompletions [%p]", this));
|
|
if (!mClassifier) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Ownership is transferred in to us
|
|
nsAutoPtr<CacheResultArray> resultsPtr(results);
|
|
|
|
if (resultsPtr->Length() == 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (IsSameAsLastResults(*resultsPtr)) {
|
|
LOG(("Skipping completions that have just been cached already."));
|
|
return NS_OK;
|
|
}
|
|
|
|
// Only cache results for tables that we have, don't take
|
|
// in tables we might accidentally have hit during a completion.
|
|
// This happens due to goog vs googpub lists existing.
|
|
nsTArray<nsCString> tables;
|
|
nsresult rv = mClassifier->ActiveTables(tables);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsTArray<TableUpdate*> updates;
|
|
|
|
for (uint32_t i = 0; i < resultsPtr->Length(); i++) {
|
|
bool activeTable = false;
|
|
CacheResult* result = resultsPtr->ElementAt(i).get();
|
|
|
|
for (uint32_t table = 0; table < tables.Length(); table++) {
|
|
if (tables[table].Equals(result->table)) {
|
|
activeTable = true;
|
|
break;
|
|
}
|
|
}
|
|
if (activeTable) {
|
|
nsAutoPtr<ProtocolParser> pParse;
|
|
pParse = result->Ver() == CacheResult::V2 ?
|
|
static_cast<ProtocolParser*>(new ProtocolParserV2()) :
|
|
static_cast<ProtocolParser*>(new ProtocolParserProtobuf());
|
|
|
|
TableUpdate* tu = pParse->GetTableUpdate(result->table);
|
|
|
|
rv = CacheResultToTableUpdate(result, tu);
|
|
if (NS_FAILED(rv)) {
|
|
// We can bail without leaking here because ForgetTableUpdates
|
|
// hasn't been called yet.
|
|
return rv;
|
|
}
|
|
updates.AppendElement(tu);
|
|
pParse->ForgetTableUpdates();
|
|
} else {
|
|
LOG(("Completion received, but table is not active, so not caching."));
|
|
}
|
|
}
|
|
|
|
mClassifier->ApplyFullHashes(&updates);
|
|
mLastResults = Move(resultsPtr);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBServiceWorker::CacheResultToTableUpdate(CacheResult* aCacheResult,
|
|
TableUpdate* aUpdate)
|
|
{
|
|
auto tuV2 = TableUpdate::Cast<TableUpdateV2>(aUpdate);
|
|
if (tuV2) {
|
|
auto result = CacheResult::Cast<CacheResultV2>(aCacheResult);
|
|
MOZ_ASSERT(result);
|
|
|
|
if (result->miss) {
|
|
return tuV2->NewMissPrefix(result->prefix);
|
|
} else {
|
|
LOG(("CacheCompletion hash %X, Addchunk %d", result->completion.ToUint32(),
|
|
result->addChunk));
|
|
|
|
nsresult rv = tuV2->NewAddComplete(result->addChunk, result->completion);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
return tuV2->NewAddChunk(result->addChunk);
|
|
}
|
|
}
|
|
|
|
auto tuV4 = TableUpdate::Cast<TableUpdateV4>(aUpdate);
|
|
if (tuV4) {
|
|
auto result = CacheResult::Cast<CacheResultV4>(aCacheResult);
|
|
MOZ_ASSERT(result);
|
|
|
|
if (LOG_ENABLED()) {
|
|
const FullHashExpiryCache& fullHashes = result->response.fullHashes;
|
|
for (auto iter = fullHashes.ConstIter(); !iter.Done(); iter.Next()) {
|
|
Completion completion;
|
|
completion.Assign(iter.Key());
|
|
LOG(("CacheCompletion(v4) hash %X, CacheExpireTime %" PRId64,
|
|
completion.ToUint32(), iter.Data()));
|
|
}
|
|
}
|
|
|
|
tuV4->NewFullHashResponse(result->prefix, result->response);
|
|
return NS_OK;
|
|
}
|
|
|
|
// tableUpdate object should be either V2 or V4.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBServiceWorker::OpenDb()
|
|
{
|
|
if (gShuttingDownThread) {
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
MOZ_ASSERT(!NS_IsMainThread(), "Must initialize DB on background thread");
|
|
// Connection already open, don't do anything.
|
|
if (mClassifier) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv;
|
|
nsAutoPtr<Classifier> classifier(new (fallible) Classifier());
|
|
if (!classifier) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
rv = classifier->Open(*mCacheDir);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mClassifier = classifier;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBServiceWorker::ClearLastResults()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread(), "Must be on the background thread");
|
|
if (mLastResults) {
|
|
mLastResults->Clear();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBServiceWorker::GetCacheInfo(const nsACString& aTable,
|
|
nsIUrlClassifierCacheInfo** aCache)
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread(), "Must be on the background thread");
|
|
if (!mClassifier) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
mClassifier->GetCacheInfo(aTable, aCache);
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsUrlClassifierDBServiceWorker::IsSameAsLastResults(CacheResultArray& aResult)
|
|
{
|
|
if (!mLastResults || mLastResults->Length() != aResult.Length()) {
|
|
return false;
|
|
}
|
|
|
|
bool equal = true;
|
|
for (uint32_t i = 0; i < mLastResults->Length() && equal; i++) {
|
|
CacheResult* lhs = mLastResults->ElementAt(i).get();
|
|
CacheResult* rhs = aResult[i].get();
|
|
|
|
if (lhs->Ver() != rhs->Ver()) {
|
|
return false;
|
|
}
|
|
|
|
if (lhs->Ver() == CacheResult::V2) {
|
|
equal = *(CacheResult::Cast<CacheResultV2>(lhs)) ==
|
|
*(CacheResult::Cast<CacheResultV2>(rhs));
|
|
} else if (lhs->Ver() == CacheResult::V4) {
|
|
equal = *(CacheResult::Cast<CacheResultV4>(lhs)) ==
|
|
*(CacheResult::Cast<CacheResultV4>(rhs));
|
|
}
|
|
}
|
|
|
|
return equal;
|
|
}
|
|
|
|
// -------------------------------------------------------------------------
|
|
// nsUrlClassifierLookupCallback
|
|
//
|
|
// This class takes the results of a lookup found on the worker thread
|
|
// and handles any necessary partial hash expansions before calling
|
|
// the client callback.
|
|
|
|
class nsUrlClassifierLookupCallback final : public nsIUrlClassifierLookupCallback
|
|
, public nsIUrlClassifierHashCompleterCallback
|
|
{
|
|
public:
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
NS_DECL_NSIURLCLASSIFIERLOOKUPCALLBACK
|
|
NS_DECL_NSIURLCLASSIFIERHASHCOMPLETERCALLBACK
|
|
|
|
nsUrlClassifierLookupCallback(nsUrlClassifierDBService *dbservice,
|
|
nsIUrlClassifierCallback *c)
|
|
: mDBService(dbservice)
|
|
, mResults(nullptr)
|
|
, mPendingCompletions(0)
|
|
, mCallback(c)
|
|
{}
|
|
|
|
private:
|
|
~nsUrlClassifierLookupCallback();
|
|
|
|
nsresult HandleResults();
|
|
nsresult ProcessComplete(CacheResult* aCacheResult);
|
|
nsresult CacheMisses();
|
|
|
|
RefPtr<nsUrlClassifierDBService> mDBService;
|
|
nsAutoPtr<LookupResultArray> mResults;
|
|
|
|
// Completed results to send back to the worker for caching.
|
|
nsAutoPtr<CacheResultArray> mCacheResults;
|
|
|
|
uint32_t mPendingCompletions;
|
|
nsCOMPtr<nsIUrlClassifierCallback> mCallback;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(nsUrlClassifierLookupCallback,
|
|
nsIUrlClassifierLookupCallback,
|
|
nsIUrlClassifierHashCompleterCallback)
|
|
|
|
nsUrlClassifierLookupCallback::~nsUrlClassifierLookupCallback()
|
|
{
|
|
if (mCallback) {
|
|
NS_ReleaseOnMainThreadSystemGroup(
|
|
"nsUrlClassifierLookupCallback::mCallback", mCallback.forget());
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierLookupCallback::LookupComplete(nsTArray<LookupResult>* results)
|
|
{
|
|
NS_ASSERTION(mResults == nullptr,
|
|
"Should only get one set of results per nsUrlClassifierLookupCallback!");
|
|
|
|
if (!results) {
|
|
HandleResults();
|
|
return NS_OK;
|
|
}
|
|
|
|
mResults = results;
|
|
|
|
// Check the results entries that need to be completed.
|
|
for (uint32_t i = 0; i < results->Length(); i++) {
|
|
LookupResult& result = results->ElementAt(i);
|
|
|
|
// We will complete partial matches and matches that are stale.
|
|
if (!result.Confirmed()) {
|
|
nsCOMPtr<nsIUrlClassifierHashCompleter> completer;
|
|
nsCString gethashUrl;
|
|
nsresult rv;
|
|
nsCOMPtr<nsIUrlListManager> listManager = do_GetService(
|
|
"@mozilla.org/url-classifier/listmanager;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = listManager->GetGethashUrl(result.mTableName, gethashUrl);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
LOG(("The match from %s needs to be completed at %s",
|
|
result.mTableName.get(), gethashUrl.get()));
|
|
// gethashUrls may be empty in 2 cases: test tables, and on startup where
|
|
// we may have found a prefix in an existing table before the listmanager
|
|
// has registered the table. In the second case we should not call
|
|
// complete.
|
|
if ((!gethashUrl.IsEmpty() ||
|
|
StringBeginsWith(result.mTableName, NS_LITERAL_CSTRING("test"))) &&
|
|
mDBService->GetCompleter(result.mTableName,
|
|
getter_AddRefs(completer))) {
|
|
|
|
// Bug 1323953 - Send the first 4 bytes for completion no matter how
|
|
// long we matched the prefix.
|
|
nsresult rv = completer->Complete(result.PartialHash(),
|
|
gethashUrl,
|
|
result.mTableName,
|
|
this);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mPendingCompletions++;
|
|
}
|
|
} else {
|
|
// For tables with no hash completer, a complete hash match is
|
|
// good enough, we'll consider it is valid.
|
|
if (result.Complete()) {
|
|
result.mConfirmed = true;
|
|
LOG(("Skipping completion in a table without a valid completer (%s).",
|
|
result.mTableName.get()));
|
|
} else {
|
|
NS_WARNING("Partial match in a table without a valid completer, ignoring partial match.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
LOG(("nsUrlClassifierLookupCallback::LookupComplete [%p] "
|
|
"%u pending completions", this, mPendingCompletions));
|
|
if (mPendingCompletions == 0) {
|
|
// All results were complete, we're ready!
|
|
HandleResults();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierLookupCallback::CompletionFinished(nsresult status)
|
|
{
|
|
if (LOG_ENABLED()) {
|
|
nsAutoCString errorName;
|
|
mozilla::GetErrorName(status, errorName);
|
|
LOG(("nsUrlClassifierLookupCallback::CompletionFinished [%p, %s]",
|
|
this, errorName.get()));
|
|
}
|
|
|
|
mPendingCompletions--;
|
|
if (mPendingCompletions == 0) {
|
|
HandleResults();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierLookupCallback::CompletionV2(const nsACString& aCompleteHash,
|
|
const nsACString& aTableName,
|
|
uint32_t aChunkId)
|
|
{
|
|
LOG(("nsUrlClassifierLookupCallback::Completion [%p, %s, %d]",
|
|
this, PromiseFlatCString(aTableName).get(), aChunkId));
|
|
|
|
MOZ_ASSERT(!StringEndsWith(aTableName, NS_LITERAL_CSTRING("-proto")));
|
|
|
|
nsAutoPtr<CacheResultV2> result(new CacheResultV2);
|
|
|
|
result->table = aTableName;
|
|
result->prefix.Assign(aCompleteHash);
|
|
result->completion.Assign(aCompleteHash);
|
|
result->addChunk = aChunkId;
|
|
|
|
return ProcessComplete(result.forget());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierLookupCallback::CompletionV4(const nsACString& aPartialHash,
|
|
const nsACString& aTableName,
|
|
uint32_t aNegativeCacheDuration,
|
|
nsIArray* aFullHashes)
|
|
{
|
|
LOG(("nsUrlClassifierLookupCallback::CompletionV4 [%p, %s, %d]",
|
|
this, PromiseFlatCString(aTableName).get(), aNegativeCacheDuration));
|
|
|
|
MOZ_ASSERT(StringEndsWith(aTableName, NS_LITERAL_CSTRING("-proto")));
|
|
|
|
if(!aFullHashes) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (aNegativeCacheDuration > MAXIMUM_NEGATIVE_CACHE_DURATION_SEC) {
|
|
LOG(("Negative cache duration too large, clamping it down to"
|
|
"a reasonable value."));
|
|
aNegativeCacheDuration = MAXIMUM_NEGATIVE_CACHE_DURATION_SEC;
|
|
}
|
|
|
|
nsAutoPtr<CacheResultV4> result(new CacheResultV4);
|
|
|
|
int64_t nowSec = PR_Now() / PR_USEC_PER_SEC;
|
|
|
|
result->table = aTableName;
|
|
result->prefix.Assign(aPartialHash);
|
|
result->response.negativeCacheExpirySec = nowSec + aNegativeCacheDuration;
|
|
|
|
// Fill in positive cache entries.
|
|
uint32_t fullHashCount = 0;
|
|
nsresult rv = aFullHashes->GetLength(&fullHashCount);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < fullHashCount; i++) {
|
|
nsCOMPtr<nsIFullHashMatch> match = do_QueryElementAt(aFullHashes, i);
|
|
|
|
nsCString fullHash;
|
|
match->GetFullHash(fullHash);
|
|
|
|
uint32_t duration;
|
|
match->GetCacheDuration(&duration);
|
|
|
|
result->response.fullHashes.Put(fullHash, nowSec + duration);
|
|
}
|
|
|
|
return ProcessComplete(result.forget());
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierLookupCallback::ProcessComplete(CacheResult* aCacheResult)
|
|
{
|
|
// Send this completion to the store for caching.
|
|
if (!mCacheResults) {
|
|
mCacheResults = new (fallible) CacheResultArray();
|
|
if (!mCacheResults) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
// OK if this fails, we just won't cache the item.
|
|
mCacheResults->AppendElement(aCacheResult, fallible);
|
|
|
|
// Check if this matched any of our results.
|
|
for (uint32_t i = 0; i < mResults->Length(); i++) {
|
|
LookupResult& result = mResults->ElementAt(i);
|
|
|
|
// Now, see if it verifies a lookup
|
|
if (!result.mNoise
|
|
&& result.mTableName.Equals(aCacheResult->table)
|
|
&& aCacheResult->findCompletion(result.CompleteHash())) {
|
|
result.mProtocolConfirmed = true;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierLookupCallback::HandleResults()
|
|
{
|
|
if (!mResults) {
|
|
// No results, this URI is clean.
|
|
LOG(("nsUrlClassifierLookupCallback::HandleResults [%p, no results]", this));
|
|
return mCallback->HandleEvent(NS_LITERAL_CSTRING(""));
|
|
}
|
|
MOZ_ASSERT(mPendingCompletions == 0, "HandleResults() should never be "
|
|
"called while there are pending completions");
|
|
|
|
LOG(("nsUrlClassifierLookupCallback::HandleResults [%p, %zu results]",
|
|
this, mResults->Length()));
|
|
|
|
nsCOMPtr<nsIUrlClassifierClassifyCallback> classifyCallback =
|
|
do_QueryInterface(mCallback);
|
|
|
|
nsTArray<nsCString> tables;
|
|
// Build a stringified list of result tables.
|
|
for (uint32_t i = 0; i < mResults->Length(); i++) {
|
|
LookupResult& result = mResults->ElementAt(i);
|
|
|
|
// Leave out results that weren't confirmed, as their existence on
|
|
// the list can't be verified. Also leave out randomly-generated
|
|
// noise.
|
|
if (result.mNoise) {
|
|
LOG(("Skipping result %s from table %s (noise)",
|
|
result.PartialHashHex().get(), result.mTableName.get()));
|
|
continue;
|
|
}
|
|
|
|
if (!result.Confirmed()) {
|
|
LOG(("Skipping result %s from table %s (not confirmed)",
|
|
result.PartialHashHex().get(), result.mTableName.get()));
|
|
continue;
|
|
}
|
|
|
|
LOG(("Confirmed result %s from table %s",
|
|
result.PartialHashHex().get(), result.mTableName.get()));
|
|
|
|
if (tables.IndexOf(result.mTableName) == nsTArray<nsCString>::NoIndex) {
|
|
tables.AppendElement(result.mTableName);
|
|
}
|
|
|
|
if (classifyCallback) {
|
|
nsCString fullHashString;
|
|
result.hash.complete.ToString(fullHashString);
|
|
classifyCallback->HandleResult(result.mTableName, fullHashString);
|
|
}
|
|
}
|
|
|
|
// Some parts of this gethash request generated no hits at all.
|
|
// Save the prefixes we checked to prevent repeated requests.
|
|
CacheMisses();
|
|
|
|
if (mCacheResults) {
|
|
// This hands ownership of the cache results array back to the worker
|
|
// thread.
|
|
mDBService->CacheCompletions(mCacheResults.forget());
|
|
}
|
|
|
|
nsAutoCString tableStr;
|
|
for (uint32_t i = 0; i < tables.Length(); i++) {
|
|
if (i != 0)
|
|
tableStr.Append(',');
|
|
tableStr.Append(tables[i]);
|
|
}
|
|
|
|
return mCallback->HandleEvent(tableStr);
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierLookupCallback::CacheMisses()
|
|
{
|
|
for (uint32_t i = 0; i < mResults->Length(); i++) {
|
|
const LookupResult &result = mResults->ElementAt(i);
|
|
// Skip V4 because cache information is already included in the
|
|
// fullhash response so we don't need to manually add it here.
|
|
if (!result.mProtocolV2 || result.Confirmed() || result.mNoise) {
|
|
continue;
|
|
}
|
|
|
|
if (!mCacheResults) {
|
|
mCacheResults = new (fallible) CacheResultArray();
|
|
if (!mCacheResults) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
auto cacheResult = new CacheResultV2;
|
|
|
|
cacheResult->table = result.mTableName;
|
|
cacheResult->prefix = result.hash.fixedLengthPrefix;
|
|
cacheResult->miss = true;
|
|
if (!mCacheResults->AppendElement(cacheResult, fallible)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
struct Provider {
|
|
nsCString name;
|
|
uint8_t priority;
|
|
};
|
|
|
|
// Order matters
|
|
// Provider which is not included in this table has the lowest priority 0
|
|
static const Provider kBuiltInProviders[] = {
|
|
{ NS_LITERAL_CSTRING("mozilla"), 1 },
|
|
{ NS_LITERAL_CSTRING("google4"), 2 },
|
|
{ NS_LITERAL_CSTRING("google"), 3 },
|
|
};
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Helper class for nsIURIClassifier implementation, handle classify result and
|
|
// send back to nsIURIClassifier
|
|
|
|
class nsUrlClassifierClassifyCallback final : public nsIUrlClassifierCallback,
|
|
public nsIUrlClassifierClassifyCallback
|
|
{
|
|
public:
|
|
NS_DECL_THREADSAFE_ISUPPORTS
|
|
NS_DECL_NSIURLCLASSIFIERCALLBACK
|
|
NS_DECL_NSIURLCLASSIFIERCLASSIFYCALLBACK
|
|
|
|
explicit nsUrlClassifierClassifyCallback(nsIURIClassifierCallback *c)
|
|
: mCallback(c)
|
|
{}
|
|
|
|
private:
|
|
|
|
struct ClassifyMatchedInfo {
|
|
nsCString table;
|
|
nsCString fullhash;
|
|
Provider provider;
|
|
nsresult errorCode;
|
|
};
|
|
|
|
~nsUrlClassifierClassifyCallback() {};
|
|
|
|
nsCOMPtr<nsIURIClassifierCallback> mCallback;
|
|
nsTArray<ClassifyMatchedInfo> mMatchedArray;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(nsUrlClassifierClassifyCallback,
|
|
nsIUrlClassifierCallback,
|
|
nsIUrlClassifierClassifyCallback)
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierClassifyCallback::HandleEvent(const nsACString& tables)
|
|
{
|
|
nsresult response = TablesToResponse(tables);
|
|
ClassifyMatchedInfo* matchedInfo = nullptr;
|
|
|
|
if (NS_FAILED(response)) {
|
|
// Filter all matched info which has correct response
|
|
// In the case multiple tables found, use the higher priority provider
|
|
nsTArray<ClassifyMatchedInfo> matches;
|
|
for (uint32_t i = 0; i < mMatchedArray.Length(); i++) {
|
|
if (mMatchedArray[i].errorCode == response &&
|
|
(!matchedInfo ||
|
|
matchedInfo->provider.priority < mMatchedArray[i].provider.priority)) {
|
|
matchedInfo = &mMatchedArray[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCString provider = matchedInfo ? matchedInfo->provider.name : EmptyCString();
|
|
nsCString fullhash = matchedInfo ? matchedInfo->fullhash : EmptyCString();
|
|
nsCString table = matchedInfo ? matchedInfo->table : EmptyCString();
|
|
|
|
mCallback->OnClassifyComplete(response, table, provider, fullhash);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierClassifyCallback::HandleResult(const nsACString& aTable,
|
|
const nsACString& aFullHash)
|
|
{
|
|
LOG(("nsUrlClassifierClassifyCallback::HandleResult [%p, table %s full hash %s]",
|
|
this, PromiseFlatCString(aTable).get(), PromiseFlatCString(aFullHash).get()));
|
|
|
|
if (NS_WARN_IF(aTable.IsEmpty()) || NS_WARN_IF(aFullHash.IsEmpty())) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
ClassifyMatchedInfo* matchedInfo = mMatchedArray.AppendElement();
|
|
matchedInfo->table = aTable;
|
|
matchedInfo->fullhash = aFullHash;
|
|
|
|
nsCOMPtr<nsIUrlClassifierUtils> urlUtil =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID);
|
|
|
|
nsCString provider;
|
|
nsresult rv = urlUtil->GetProvider(aTable, provider);
|
|
|
|
matchedInfo->provider.name = NS_SUCCEEDED(rv) ? provider : EmptyCString();
|
|
matchedInfo->provider.priority = 0;
|
|
for (uint8_t i = 0; i < ArrayLength(kBuiltInProviders); i++) {
|
|
if (kBuiltInProviders[i].name.Equals(matchedInfo->provider.name)) {
|
|
matchedInfo->provider.priority = kBuiltInProviders[i].priority;
|
|
}
|
|
}
|
|
matchedInfo->errorCode = TablesToResponse(aTable);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Proxy class implementation
|
|
|
|
NS_IMPL_ADDREF(nsUrlClassifierDBService)
|
|
NS_IMPL_RELEASE(nsUrlClassifierDBService)
|
|
NS_INTERFACE_MAP_BEGIN(nsUrlClassifierDBService)
|
|
// Only nsIURIClassifier is supported in the content process!
|
|
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIUrlClassifierDBService, XRE_IsParentProcess())
|
|
NS_INTERFACE_MAP_ENTRY(nsIURIClassifier)
|
|
NS_INTERFACE_MAP_ENTRY(nsIUrlClassifierInfo)
|
|
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIObserver, XRE_IsParentProcess())
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIURIClassifier)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
/* static */ nsUrlClassifierDBService*
|
|
nsUrlClassifierDBService::GetInstance(nsresult *result)
|
|
{
|
|
*result = NS_OK;
|
|
if (!sUrlClassifierDBService) {
|
|
sUrlClassifierDBService = new (fallible) nsUrlClassifierDBService();
|
|
if (!sUrlClassifierDBService) {
|
|
*result = NS_ERROR_OUT_OF_MEMORY;
|
|
return nullptr;
|
|
}
|
|
|
|
NS_ADDREF(sUrlClassifierDBService); // addref the global
|
|
|
|
*result = sUrlClassifierDBService->Init();
|
|
if (NS_FAILED(*result)) {
|
|
NS_RELEASE(sUrlClassifierDBService);
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
// Already exists, just add a ref
|
|
NS_ADDREF(sUrlClassifierDBService); // addref the return result
|
|
}
|
|
return sUrlClassifierDBService;
|
|
}
|
|
|
|
|
|
nsUrlClassifierDBService::nsUrlClassifierDBService()
|
|
: mCheckMalware(CHECK_MALWARE_DEFAULT)
|
|
, mCheckPhishing(CHECK_PHISHING_DEFAULT)
|
|
, mCheckBlockedURIs(CHECK_BLOCKED_DEFAULT)
|
|
, mInUpdate(false)
|
|
{
|
|
}
|
|
|
|
nsUrlClassifierDBService::~nsUrlClassifierDBService()
|
|
{
|
|
sUrlClassifierDBService = nullptr;
|
|
}
|
|
|
|
void
|
|
AppendTables(const nsCString& aTables, nsCString &outTables)
|
|
{
|
|
if (!aTables.IsEmpty()) {
|
|
if (!outTables.IsEmpty()) {
|
|
outTables.Append(',');
|
|
}
|
|
outTables.Append(aTables);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBService::ReadTablesFromPrefs()
|
|
{
|
|
mCheckMalware = Preferences::GetBool(CHECK_MALWARE_PREF,
|
|
CHECK_MALWARE_DEFAULT);
|
|
mCheckPhishing = Preferences::GetBool(CHECK_PHISHING_PREF,
|
|
CHECK_PHISHING_DEFAULT);
|
|
mCheckBlockedURIs = Preferences::GetBool(CHECK_BLOCKED_PREF,
|
|
CHECK_BLOCKED_DEFAULT);
|
|
|
|
nsAutoCString allTables;
|
|
nsAutoCString tables;
|
|
|
|
mBaseTables.Truncate();
|
|
mTrackingProtectionTables.Truncate();
|
|
|
|
Preferences::GetCString(PHISH_TABLE_PREF, allTables);
|
|
if (mCheckPhishing) {
|
|
AppendTables(allTables, mBaseTables);
|
|
}
|
|
|
|
Preferences::GetCString(MALWARE_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
if (mCheckMalware) {
|
|
AppendTables(tables, mBaseTables);
|
|
}
|
|
|
|
Preferences::GetCString(BLOCKED_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
if (mCheckBlockedURIs) {
|
|
AppendTables(tables, mBaseTables);
|
|
}
|
|
|
|
Preferences::GetCString(DOWNLOAD_BLOCK_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
|
|
Preferences::GetCString(DOWNLOAD_ALLOW_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
|
|
Preferences::GetCString(PASSWORD_ALLOW_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
|
|
Preferences::GetCString(TRACKING_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
AppendTables(tables, mTrackingProtectionTables);
|
|
|
|
Preferences::GetCString(TRACKING_WHITELIST_TABLE_PREF, tables);
|
|
AppendTables(tables, allTables);
|
|
AppendTables(tables, mTrackingProtectionTables);
|
|
|
|
Classifier::SplitTables(allTables, mGethashTables);
|
|
|
|
Preferences::GetCString(DISALLOW_COMPLETION_TABLE_PREF, tables);
|
|
Classifier::SplitTables(tables, mDisallowCompletionsTables);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBService::Init()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread(), "Must initialize DB service on main thread");
|
|
nsCOMPtr<nsIXULRuntime> appInfo = do_GetService("@mozilla.org/xre/app-info;1");
|
|
if (appInfo) {
|
|
bool inSafeMode = false;
|
|
appInfo->GetInSafeMode(&inSafeMode);
|
|
if (inSafeMode) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
switch (XRE_GetProcessType()) {
|
|
case GeckoProcessType_Default:
|
|
// The parent process is supported.
|
|
break;
|
|
case GeckoProcessType_Content:
|
|
// In a content process, we simply forward all requests to the parent process,
|
|
// so we can skip the initialization steps here.
|
|
// Note that since we never register an observer, Shutdown() will also never
|
|
// be called in the content process.
|
|
return NS_OK;
|
|
default:
|
|
// No other process type is supported!
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
sGethashNoise = Preferences::GetUint(GETHASH_NOISE_PREF,
|
|
GETHASH_NOISE_DEFAULT);
|
|
ReadTablesFromPrefs();
|
|
nsresult rv;
|
|
|
|
{
|
|
// Force nsIUrlClassifierUtils loading on main thread.
|
|
nsCOMPtr<nsIUrlClassifierUtils> dummy =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// Directory providers must also be accessed on the main thread.
|
|
nsCOMPtr<nsIFile> cacheDir;
|
|
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_LOCAL_50_DIR,
|
|
getter_AddRefs(cacheDir));
|
|
if (NS_FAILED(rv)) {
|
|
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
|
|
getter_AddRefs(cacheDir));
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Start the background thread.
|
|
rv = NS_NewNamedThread("URL Classifier", &gDbBackgroundThread);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
mWorker = new (fallible) nsUrlClassifierDBServiceWorker();
|
|
if (!mWorker) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
rv = mWorker->Init(sGethashNoise, cacheDir, this);
|
|
if (NS_FAILED(rv)) {
|
|
mWorker = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
// Proxy for calling the worker on the background thread
|
|
mWorkerProxy = new UrlClassifierDBServiceWorkerProxy(mWorker);
|
|
rv = mWorkerProxy->OpenDb();
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
// Add an observer for shutdown
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (!observerService)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// The application is about to quit
|
|
observerService->AddObserver(this, "quit-application", false);
|
|
observerService->AddObserver(this, "profile-before-change", false);
|
|
|
|
// XXX: Do we *really* need to be able to change all of these at runtime?
|
|
// Note: These observers should only be added when everything else above has
|
|
// succeeded. Failing to do so can cause long shutdown times in certain
|
|
// situations. See Bug 1247798 and Bug 1244803.
|
|
Preferences::AddUintVarCache(&sGethashNoise, GETHASH_NOISE_PREF,
|
|
GETHASH_NOISE_DEFAULT);
|
|
|
|
for (uint8_t i = 0; i < kObservedPrefs.Length(); i++) {
|
|
Preferences::AddStrongObserver(this, kObservedPrefs[i].get());
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsChannelClassifier is the only consumer of this interface.
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::Classify(nsIPrincipal* aPrincipal,
|
|
nsIEventTarget* aEventTarget,
|
|
bool aTrackingProtectionEnabled,
|
|
nsIURIClassifierCallback* c,
|
|
bool* result)
|
|
{
|
|
NS_ENSURE_ARG(aPrincipal);
|
|
|
|
if (XRE_IsContentProcess()) {
|
|
using namespace mozilla::dom;
|
|
|
|
ContentChild* content = ContentChild::GetSingleton();
|
|
MOZ_ASSERT(content);
|
|
|
|
auto actor = static_cast<URLClassifierChild*>
|
|
(content->AllocPURLClassifierChild(IPC::Principal(aPrincipal),
|
|
aTrackingProtectionEnabled,
|
|
result));
|
|
MOZ_ASSERT(actor);
|
|
|
|
if (aEventTarget) {
|
|
content->SetEventTargetForActor(actor, aEventTarget);
|
|
} else {
|
|
// In the case null event target we should use systemgroup event target
|
|
NS_WARNING(("Null event target, we should use SystemGroup to do labelling"));
|
|
nsCOMPtr<nsIEventTarget> systemGroupEventTarget
|
|
= mozilla::SystemGroup::EventTargetFor(mozilla::TaskCategory::Other);
|
|
content->SetEventTargetForActor(actor, systemGroupEventTarget);
|
|
}
|
|
if (!content->SendPURLClassifierConstructor(actor, IPC::Principal(aPrincipal),
|
|
aTrackingProtectionEnabled,
|
|
result)) {
|
|
*result = false;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
actor->SetCallback(c);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
if (!(mCheckMalware || mCheckPhishing || aTrackingProtectionEnabled ||
|
|
mCheckBlockedURIs)) {
|
|
*result = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<nsUrlClassifierClassifyCallback> callback =
|
|
new (fallible) nsUrlClassifierClassifyCallback(c);
|
|
|
|
if (!callback) return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
nsCString tables = mBaseTables;
|
|
if (aTrackingProtectionEnabled) {
|
|
AppendTables(mTrackingProtectionTables, tables);
|
|
}
|
|
|
|
nsresult rv = LookupURI(aPrincipal, tables, callback, false, result);
|
|
if (rv == NS_ERROR_MALFORMED_URI) {
|
|
*result = false;
|
|
// The URI had no hostname, don't try to classify it.
|
|
return NS_OK;
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::ClassifyLocal(nsIURI *aURI,
|
|
const nsACString& aTables,
|
|
nsACString& aTableResults)
|
|
{
|
|
nsTArray<nsCString> results;
|
|
ClassifyLocalWithTables(aURI, aTables, results);
|
|
|
|
// Convert the result array to a comma separated string
|
|
aTableResults.AssignLiteral("");
|
|
bool first = true;
|
|
for (nsCString& result : results) {
|
|
if (first) {
|
|
first = false;
|
|
} else {
|
|
aTableResults.AppendLiteral(",");
|
|
}
|
|
aTableResults.Append(result);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::AsyncClassifyLocalWithTables(nsIURI *aURI,
|
|
const nsACString& aTables,
|
|
nsIURIClassifierCallback* aCallback)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread(), "AsyncClassifyLocalWithTables must be called "
|
|
"on main thread");
|
|
|
|
// We do this check no matter what process we are in to return
|
|
// error as early as possible.
|
|
nsCOMPtr<nsIURI> uri = NS_GetInnermostURI(aURI);
|
|
NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
|
|
|
|
nsAutoCString key;
|
|
// Canonicalize the url
|
|
nsCOMPtr<nsIUrlClassifierUtils> utilsService =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID);
|
|
nsresult rv = utilsService->GetKeyForURI(uri, key);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (XRE_IsContentProcess()) {
|
|
using namespace mozilla::dom;
|
|
using namespace mozilla::ipc;
|
|
|
|
ContentChild* content = ContentChild::GetSingleton();
|
|
if (NS_WARN_IF(!content || content->IsShuttingDown())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
auto actor = new URLClassifierLocalChild();
|
|
|
|
// TODO: Bug 1353701 - Supports custom event target for labelling.
|
|
nsCOMPtr<nsIEventTarget> systemGroupEventTarget
|
|
= mozilla::SystemGroup::EventTargetFor(mozilla::TaskCategory::Other);
|
|
content->SetEventTargetForActor(actor, systemGroupEventTarget);
|
|
|
|
URIParams uri;
|
|
SerializeURI(aURI, uri);
|
|
nsAutoCString tables(aTables);
|
|
if (!content->SendPURLClassifierLocalConstructor(actor, uri, tables)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
actor->SetCallback(aCallback);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (gShuttingDownThread) {
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
using namespace mozilla::Telemetry;
|
|
auto startTime = TimeStamp::Now(); // For telemetry.
|
|
|
|
auto worker = mWorker;
|
|
nsCString tables(aTables);
|
|
|
|
// Since aCallback will be passed around threads...
|
|
nsMainThreadPtrHandle<nsIURIClassifierCallback> callback(
|
|
new nsMainThreadPtrHolder<nsIURIClassifierCallback>(
|
|
"nsIURIClassifierCallback", aCallback));
|
|
|
|
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
|
|
"nsUrlClassifierDBService::AsyncClassifyLocalWithTables",
|
|
[worker, key, tables, callback, startTime]() -> void {
|
|
|
|
nsCString matchedLists;
|
|
nsAutoPtr<LookupResultArray> results(new LookupResultArray());
|
|
if (results) {
|
|
nsresult rv = worker->DoLocalLookup(key, tables, results);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
for (uint32_t i = 0; i < results->Length(); i++) {
|
|
if (i > 0) {
|
|
matchedLists.AppendLiteral(",");
|
|
}
|
|
matchedLists.Append(results->ElementAt(i).mTableName);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> cbRunnable = NS_NewRunnableFunction(
|
|
"nsUrlClassifierDBService::AsyncClassifyLocalWithTables",
|
|
[callback, matchedLists, startTime]() -> void {
|
|
// Measure the time diff between calling and callback.
|
|
AccumulateDelta_impl<Millisecond>::compute(
|
|
Telemetry::URLCLASSIFIER_ASYNC_CLASSIFYLOCAL_TIME, startTime);
|
|
|
|
// |callback| is captured as const value so ...
|
|
auto cb = const_cast<nsIURIClassifierCallback*>(callback.get());
|
|
cb->OnClassifyComplete(NS_OK, // Not used.
|
|
matchedLists,
|
|
EmptyCString(), // provider. (Not used)
|
|
EmptyCString()); // prefix. (Not used)
|
|
});
|
|
|
|
NS_DispatchToMainThread(cbRunnable);
|
|
});
|
|
|
|
return gDbBackgroundThread->Dispatch(r, NS_DISPATCH_NORMAL);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::ClassifyLocalWithTables(nsIURI *aURI,
|
|
const nsACString& aTables,
|
|
nsTArray<nsCString>& aTableResults)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread(), "ClassifyLocalWithTables must be on main thread");
|
|
if (gShuttingDownThread) {
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
nsresult rv;
|
|
if (XRE_IsContentProcess()) {
|
|
using namespace mozilla::dom;
|
|
using namespace mozilla::ipc;
|
|
URIParams uri;
|
|
SerializeURI(aURI, uri);
|
|
nsAutoCString tables(aTables);
|
|
bool result = ContentChild::GetSingleton()->SendClassifyLocal(uri, tables,
|
|
&rv,
|
|
&aTableResults);
|
|
if (result) {
|
|
return rv;
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
AUTO_PROFILER_LABEL("nsUrlClassifierDBService::ClassifyLocalWithTables",
|
|
OTHER);
|
|
Telemetry::AutoTimer<Telemetry::URLCLASSIFIER_CLASSIFYLOCAL_TIME> timer;
|
|
|
|
nsCOMPtr<nsIURI> uri = NS_GetInnermostURI(aURI);
|
|
NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
|
|
|
|
nsAutoCString key;
|
|
// Canonicalize the url
|
|
nsCOMPtr<nsIUrlClassifierUtils> utilsService =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID);
|
|
rv = utilsService->GetKeyForURI(uri, key);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsAutoPtr<LookupResultArray> results(new (fallible) LookupResultArray());
|
|
if (!results) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// In unittests, we may not have been initalized, so don't crash.
|
|
rv = mWorkerProxy->DoLocalLookup(key, aTables, results);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = ProcessLookupResults(results, aTableResults);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
class ThreatHitReportListener final
|
|
: public nsIStreamListener
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIREQUESTOBSERVER
|
|
NS_DECL_NSISTREAMLISTENER
|
|
|
|
ThreatHitReportListener() = default;
|
|
|
|
private:
|
|
~ThreatHitReportListener() = default;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(ThreatHitReportListener, nsIStreamListener, nsIRequestObserver)
|
|
|
|
NS_IMETHODIMP
|
|
ThreatHitReportListener::OnStartRequest(nsIRequest* aRequest, nsISupports* aContext)
|
|
{
|
|
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aRequest);
|
|
if (httpChannel) {
|
|
nsresult rv;
|
|
nsresult status = NS_OK;
|
|
rv = httpChannel->GetStatus(&status);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint8_t netErrCode = NS_FAILED(status) ?
|
|
mozilla::safebrowsing::NetworkErrorToBucket(status) : 0;
|
|
mozilla::Telemetry::Accumulate(
|
|
mozilla::Telemetry::URLCLASSIFIER_THREATHIT_NETWORK_ERROR, netErrCode);
|
|
|
|
uint32_t requestStatus;
|
|
rv = httpChannel->GetResponseStatus(&requestStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
mozilla::Telemetry::Accumulate(mozilla::Telemetry::URLCLASSIFIER_THREATHIT_REMOTE_STATUS,
|
|
mozilla::safebrowsing::HTTPStatusToBucket(requestStatus));
|
|
if (LOG_ENABLED()) {
|
|
nsAutoCString errorName, spec;
|
|
mozilla::GetErrorName(status, errorName);
|
|
nsCOMPtr<nsIURI> uri;
|
|
rv = httpChannel->GetURI(getter_AddRefs(uri));
|
|
if (NS_SUCCEEDED(rv) && uri) {
|
|
uri->GetAsciiSpec(spec);
|
|
}
|
|
|
|
nsCOMPtr<nsIURLFormatter> urlFormatter =
|
|
do_GetService("@mozilla.org/toolkit/URLFormatterService;1");
|
|
|
|
// Trim sensitive log data
|
|
nsString trimmedSpec;
|
|
rv = urlFormatter->TrimSensitiveURLs(NS_ConvertUTF8toUTF16(spec), trimmedSpec);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
LOG(("ThreatHitReportListener::OnStartRequest "
|
|
"(status=%s, uri=%s, this=%p)", errorName.get(),
|
|
NS_ConvertUTF16toUTF8(trimmedSpec).get(), this));
|
|
|
|
}
|
|
}
|
|
|
|
LOG(("ThreatHit report response %d %d", requestStatus, netErrCode));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
ThreatHitReportListener::OnDataAvailable(nsIRequest* aRequest,
|
|
nsISupports* aContext,
|
|
nsIInputStream* aInputStream,
|
|
uint64_t aOffset,
|
|
uint32_t aCount)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
NS_IMETHODIMP
|
|
ThreatHitReportListener::OnStopRequest(nsIRequest* aRequest, nsISupports* aContext,
|
|
nsresult aStatus)
|
|
{
|
|
return aStatus;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::SendThreatHitReport(nsIChannel *aChannel)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aChannel);
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIClassifiedChannel> classifiedChannel =
|
|
do_QueryInterface(aChannel, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!classifiedChannel) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsAutoCString provider;
|
|
rv = classifiedChannel->GetMatchedProvider(provider);
|
|
if (NS_FAILED(rv) || provider.IsEmpty()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsAutoCString listName;
|
|
rv = classifiedChannel->GetMatchedList(listName);
|
|
if (NS_FAILED(rv) || listName.IsEmpty()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsAutoCString fullHash;
|
|
rv = classifiedChannel->GetMatchedFullHash(fullHash);
|
|
if (NS_FAILED(rv) || fullHash.IsEmpty()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsPrintfCString reportUrlPref("browser.safebrowsing.provider.%s.dataSharingURL",
|
|
provider.get());
|
|
|
|
nsCOMPtr<nsIURLFormatter> formatter(
|
|
do_GetService("@mozilla.org/toolkit/URLFormatterService;1"));
|
|
if (!formatter) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsString urlStr;
|
|
rv = formatter->FormatURLPref(NS_ConvertUTF8toUTF16(reportUrlPref), urlStr);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (urlStr.IsEmpty() || NS_LITERAL_STRING("about:blank").Equals(urlStr)) {
|
|
LOG(("%s is missing a ThreatHit data reporting URL.", provider.get()));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIUrlClassifierUtils> utilsService =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID);
|
|
if (!utilsService) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsAutoCString reportBody;
|
|
rv = utilsService->MakeThreatHitReport(aChannel, listName, fullHash, reportBody);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsAutoCString reportUriStr = NS_ConvertUTF16toUTF8(urlStr);
|
|
reportUriStr.Append("&$req=");
|
|
reportUriStr.Append(reportBody);
|
|
|
|
nsCOMPtr<nsIURI> reportURI;
|
|
rv = NS_NewURI(getter_AddRefs(reportURI), reportUriStr);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t loadFlags = nsIChannel::INHIBIT_CACHING |
|
|
nsIChannel::LOAD_BYPASS_CACHE;
|
|
|
|
nsCOMPtr<nsIChannel> reportChannel;
|
|
rv = NS_NewChannel(getter_AddRefs(reportChannel),
|
|
reportURI,
|
|
nsContentUtils::GetSystemPrincipal(),
|
|
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
|
|
nsIContentPolicy::TYPE_OTHER,
|
|
nullptr, // aLoadGroup
|
|
nullptr,
|
|
loadFlags);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Safe Browsing has a separate cookie jar
|
|
nsCOMPtr<nsILoadInfo> loadInfo = reportChannel->GetLoadInfo();
|
|
mozilla::OriginAttributes attrs;
|
|
attrs.mFirstPartyDomain.AssignLiteral(NECKO_SAFEBROWSING_FIRST_PARTY_DOMAIN);
|
|
if (loadInfo) {
|
|
loadInfo->SetOriginAttributes(attrs);
|
|
}
|
|
|
|
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(reportChannel));
|
|
NS_ENSURE_TRUE(httpChannel, rv);
|
|
|
|
rv = httpChannel->SetRequestMethod(NS_LITERAL_CSTRING("POST"));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// Disable keepalive.
|
|
rv = httpChannel->SetRequestHeader(NS_LITERAL_CSTRING("Connection"), NS_LITERAL_CSTRING("close"), false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
RefPtr<ThreatHitReportListener> listener = new ThreatHitReportListener();
|
|
rv = reportChannel->AsyncOpen2(listener);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("Failure to send Safe Browsing ThreatHit report"));
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::Lookup(nsIPrincipal* aPrincipal,
|
|
const nsACString& tables,
|
|
nsIUrlClassifierCallback* c)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
bool dummy;
|
|
return LookupURI(aPrincipal, tables, c, true, &dummy);
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBService::LookupURI(nsIPrincipal* aPrincipal,
|
|
const nsACString& tables,
|
|
nsIUrlClassifierCallback* c,
|
|
bool forceLookup,
|
|
bool *didLookup)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
NS_ENSURE_ARG(aPrincipal);
|
|
|
|
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
|
|
*didLookup = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = aPrincipal->GetURI(getter_AddRefs(uri));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
|
|
|
|
uri = NS_GetInnermostURI(uri);
|
|
NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
|
|
|
|
nsAutoCString key;
|
|
// Canonicalize the url
|
|
nsCOMPtr<nsIUrlClassifierUtils> utilsService =
|
|
do_GetService(NS_URLCLASSIFIERUTILS_CONTRACTID);
|
|
rv = utilsService->GetKeyForURI(uri, key);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
if (forceLookup) {
|
|
*didLookup = true;
|
|
} else {
|
|
bool clean = false;
|
|
|
|
if (!clean) {
|
|
nsCOMPtr<nsIPermissionManager> permissionManager =
|
|
services::GetPermissionManager();
|
|
|
|
if (permissionManager) {
|
|
uint32_t perm;
|
|
rv = permissionManager->TestPermissionFromPrincipal(aPrincipal,
|
|
"safe-browsing", &perm);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
clean |= (perm == nsIPermissionManager::ALLOW_ACTION);
|
|
}
|
|
}
|
|
|
|
*didLookup = !clean;
|
|
if (clean) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Create an nsUrlClassifierLookupCallback object. This object will
|
|
// take care of confirming partial hash matches if necessary before
|
|
// calling the client's callback.
|
|
nsCOMPtr<nsIUrlClassifierLookupCallback> callback =
|
|
new (fallible) nsUrlClassifierLookupCallback(this, c);
|
|
if (!callback) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
nsCOMPtr<nsIUrlClassifierLookupCallback> proxyCallback =
|
|
new UrlClassifierLookupCallbackProxy(callback);
|
|
|
|
// Queue this lookup and call the lookup function to flush the queue if
|
|
// necessary.
|
|
rv = mWorker->QueueLookup(key, tables, proxyCallback);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// This seems to just call HandlePendingLookups.
|
|
nsAutoCString dummy;
|
|
return mWorkerProxy->Lookup(nullptr, dummy, nullptr);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::GetTables(nsIUrlClassifierCallback* c)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
// The proxy callback uses the current thread.
|
|
nsCOMPtr<nsIUrlClassifierCallback> proxyCallback =
|
|
new UrlClassifierCallbackProxy(c);
|
|
|
|
return mWorkerProxy->GetTables(proxyCallback);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::SetHashCompleter(const nsACString &tableName,
|
|
nsIUrlClassifierHashCompleter *completer)
|
|
{
|
|
if (completer) {
|
|
mCompleters.Put(tableName, completer);
|
|
} else {
|
|
mCompleters.Remove(tableName);
|
|
}
|
|
ClearLastResults();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::ClearLastResults()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->ClearLastResults();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::BeginUpdate(nsIUrlClassifierUpdateObserver *observer,
|
|
const nsACString &updateTables)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
if (mInUpdate) {
|
|
LOG(("Already updating, not available"));
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
if (mWorker->IsBusyUpdating()) {
|
|
// |mInUpdate| used to work well because "notifying update observer"
|
|
// is synchronously done in Worker::FinishUpdate(). Even if the
|
|
// update observer hasn't been notified at this point, we can still
|
|
// dispatch BeginUpdate() since it will NOT be run until the
|
|
// previous Worker::FinishUpdate() returns.
|
|
//
|
|
// However, some tasks in Worker::FinishUpdate() have been moved to
|
|
// another thread. The update observer will NOT be notified when
|
|
// Worker::FinishUpdate() returns. If we only check |mInUpdate|,
|
|
// the following sequence might happen on worker thread:
|
|
//
|
|
// Worker::FinishUpdate() // for update 1
|
|
// Worker::BeginUpdate() // for update 2
|
|
// Worker::NotifyUpdateObserver() // for update 1
|
|
//
|
|
// So, we have to find out a way to reject BeginUpdate() right here
|
|
// if the previous update observer hasn't been notified.
|
|
//
|
|
// Directly probing the worker's state is the most lightweight solution.
|
|
// No lock is required since Worker::BeginUpdate() and
|
|
// Worker::NotifyUpdateObserver() are by nature mutual exclusive.
|
|
// (both run on worker thread.)
|
|
LOG(("The previous update observer hasn't been notified."));
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
mInUpdate = true;
|
|
|
|
// The proxy observer uses the current thread
|
|
nsCOMPtr<nsIUrlClassifierUpdateObserver> proxyObserver =
|
|
new UrlClassifierUpdateObserverProxy(observer);
|
|
|
|
return mWorkerProxy->BeginUpdate(proxyObserver, updateTables);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::BeginStream(const nsACString &table)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->BeginStream(table);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::UpdateStream(const nsACString& aUpdateChunk)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->UpdateStream(aUpdateChunk);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::FinishStream()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->FinishStream();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::FinishUpdate()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
mInUpdate = false;
|
|
|
|
return mWorkerProxy->FinishUpdate();
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::CancelUpdate()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
mInUpdate = false;
|
|
|
|
return mWorkerProxy->CancelUpdate();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::ResetDatabase()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
if (mWorker->IsBusyUpdating()) {
|
|
LOG(("Failed to ResetDatabase because of the unfinished update."));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return mWorkerProxy->ResetDatabase();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::ReloadDatabase()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
if (mWorker->IsBusyUpdating()) {
|
|
LOG(("Failed to ReloadDatabase because of the unfinished update."));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return mWorkerProxy->ReloadDatabase();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::ClearCache()
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->ClearCache();
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::GetCacheInfo(const nsACString& aTable,
|
|
nsIUrlClassifierCacheInfo** aCache)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->GetCacheInfo(aTable, aCache);
|
|
}
|
|
|
|
nsresult
|
|
nsUrlClassifierDBService::CacheCompletions(CacheResultArray *results)
|
|
{
|
|
NS_ENSURE_TRUE(gDbBackgroundThread, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
return mWorkerProxy->CacheCompletions(results);
|
|
}
|
|
|
|
bool
|
|
nsUrlClassifierDBService::CanComplete(const nsACString &aTableName)
|
|
{
|
|
return mGethashTables.Contains(aTableName) &&
|
|
!mDisallowCompletionsTables.Contains(aTableName);
|
|
}
|
|
|
|
bool
|
|
nsUrlClassifierDBService::GetCompleter(const nsACString &tableName,
|
|
nsIUrlClassifierHashCompleter **completer)
|
|
{
|
|
// If we have specified a completer, go ahead and query it. This is only
|
|
// used by tests.
|
|
if (mCompleters.Get(tableName, completer)) {
|
|
return true;
|
|
}
|
|
|
|
if (!CanComplete(tableName)) {
|
|
return false;
|
|
}
|
|
|
|
// Otherwise, call gethash to find the hash completions.
|
|
return NS_SUCCEEDED(CallGetService(NS_URLCLASSIFIERHASHCOMPLETER_CONTRACTID,
|
|
completer));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsUrlClassifierDBService::Observe(nsISupports *aSubject, const char *aTopic,
|
|
const char16_t *aData)
|
|
{
|
|
if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
|
|
nsresult rv;
|
|
nsCOMPtr<nsIPrefBranch> prefs(do_QueryInterface(aSubject, &rv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
Unused << prefs;
|
|
|
|
if (kObservedPrefs.Contains(NS_ConvertUTF16toUTF8(aData))) {
|
|
ReadTablesFromPrefs();
|
|
}
|
|
} else if (!strcmp(aTopic, "quit-application")) {
|
|
// Tell the update thread to finish as soon as possible.
|
|
gShuttingDownThread = true;
|
|
} else if (!strcmp(aTopic, "profile-before-change")) {
|
|
gShuttingDownThread = true;
|
|
Shutdown();
|
|
} else {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Join the background thread if it exists.
|
|
nsresult
|
|
nsUrlClassifierDBService::Shutdown()
|
|
{
|
|
LOG(("shutting down db service\n"));
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
|
|
if (!gDbBackgroundThread) {
|
|
return NS_OK;
|
|
}
|
|
|
|
Telemetry::AutoTimer<Telemetry::URLCLASSIFIER_SHUTDOWN_TIME> timer;
|
|
|
|
mCompleters.Clear();
|
|
|
|
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
|
|
if (prefs) {
|
|
for (uint8_t i = 0; i < kObservedPrefs.Length(); i++) {
|
|
prefs->RemoveObserver(kObservedPrefs[i].get(), this);
|
|
}
|
|
}
|
|
|
|
// 1. Synchronize with worker thread and update thread by
|
|
// *synchronously* dispatching an event to worker thread
|
|
// for shutting down the update thread. The reason not
|
|
// shutting down update thread directly from main thread
|
|
// is to avoid racing for Classifier::mUpdateThread
|
|
// between main thread and the worker thread. (Both threads
|
|
// would access Classifier::mUpdateThread.)
|
|
if (mWorker->IsDBOpened()) {
|
|
using Worker = nsUrlClassifierDBServiceWorker;
|
|
RefPtr<nsIRunnable> r = NewRunnableMethod(
|
|
"nsUrlClassifierDBServiceWorker::FlushAndDisableAsyncUpdate",
|
|
mWorker,
|
|
&Worker::FlushAndDisableAsyncUpdate);
|
|
SyncRunnable::DispatchToThread(gDbBackgroundThread, r);
|
|
}
|
|
// At this point the update thread has been shut down and
|
|
// the worker thread should only have at most one event,
|
|
// which is the callback event.
|
|
|
|
// 2. Send CancelUpdate() event to notify the dangling update.
|
|
// (i.e. BeginUpdate is called but FinishUpdate is not.)
|
|
// and CloseDb() to clear mClassifier. They will be the last two
|
|
// events on the worker thread in the shutdown process.
|
|
DebugOnly<nsresult> rv;
|
|
rv = mWorkerProxy->CancelUpdate();
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv), "failed to post 'cancel update' event");
|
|
rv = mWorkerProxy->CloseDb();
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv), "failed to post 'close db' event");
|
|
mWorkerProxy = nullptr;
|
|
|
|
// 3. Invalidate XPCOM APIs by nulling out gDbBackgroundThread
|
|
// since every API checks gDbBackgroundThread first. This has
|
|
// to be done before calling nsIThread.shutdown because it
|
|
// will cause the pending events on the joining thread to
|
|
// be processed.
|
|
nsIThread *backgroundThread = nullptr;
|
|
Swap(backgroundThread, gDbBackgroundThread);
|
|
|
|
// 4. Wait until the worker thread is down.
|
|
if (backgroundThread) {
|
|
backgroundThread->Shutdown();
|
|
NS_RELEASE(backgroundThread);
|
|
}
|
|
|
|
mWorker = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIThread*
|
|
nsUrlClassifierDBService::BackgroundThread()
|
|
{
|
|
return gDbBackgroundThread;
|
|
}
|
|
|
|
// static
|
|
bool
|
|
nsUrlClassifierDBService::ShutdownHasStarted()
|
|
{
|
|
return gShuttingDownThread;
|
|
}
|