mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 00:25:27 +00:00
614 lines
19 KiB
C++
614 lines
19 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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/**
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* This is the favicon service, which stores favicons for web pages with your
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* history as you browse. It is also used to save the favicons for bookmarks.
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*
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* DANGER: The history query system makes assumptions about the favicon storage
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* so that icons can be quickly generated for history/bookmark result sets. If
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* you change the database layout at all, you will have to update both services.
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*/
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#include "nsFaviconService.h"
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#include "nsNavHistory.h"
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#include "nsPlacesMacros.h"
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#include "Helpers.h"
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#include "AsyncFaviconHelpers.h"
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#include "nsNetUtil.h"
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#include "nsReadableUtils.h"
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#include "nsStreamUtils.h"
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#include "nsStringStream.h"
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#include "plbase64.h"
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#include "nsIClassInfoImpl.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Preferences.h"
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// For large favicons optimization.
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#include "imgITools.h"
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#include "imgIContainer.h"
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// Default value for mOptimizedIconDimension
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#define OPTIMIZED_FAVICON_DIMENSION 16
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#define MAX_FAVICON_CACHE_SIZE 256
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#define FAVICON_CACHE_REDUCE_COUNT 64
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#define MAX_UNASSOCIATED_FAVICONS 64
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// When replaceFaviconData is called, we store the icons in an in-memory cache
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// instead of in storage. Icons in the cache are expired according to this
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// interval.
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#define UNASSOCIATED_ICON_EXPIRY_INTERVAL 60000
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// The MIME type of the default favicon and favicons created by
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// OptimizeFaviconImage.
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#define DEFAULT_MIME_TYPE "image/png"
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using namespace mozilla;
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using namespace mozilla::places;
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/**
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* Used to notify a topic to system observers on async execute completion.
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* Will throw on error.
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*/
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class ExpireFaviconsStatementCallbackNotifier : public AsyncStatementCallback
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{
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public:
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ExpireFaviconsStatementCallbackNotifier();
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NS_IMETHOD HandleCompletion(uint16_t aReason);
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};
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PLACES_FACTORY_SINGLETON_IMPLEMENTATION(nsFaviconService, gFaviconService)
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NS_IMPL_CLASSINFO(nsFaviconService, nullptr, 0, NS_FAVICONSERVICE_CID)
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NS_IMPL_ISUPPORTS3_CI(
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nsFaviconService
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, nsIFaviconService
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, mozIAsyncFavicons
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, nsITimerCallback
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)
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nsFaviconService::nsFaviconService()
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: mOptimizedIconDimension(OPTIMIZED_FAVICON_DIMENSION)
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, mFailedFaviconSerial(0)
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, mFailedFavicons(MAX_FAVICON_CACHE_SIZE)
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, mUnassociatedIcons(MAX_UNASSOCIATED_FAVICONS)
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{
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NS_ASSERTION(!gFaviconService,
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"Attempting to create two instances of the service!");
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gFaviconService = this;
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}
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nsFaviconService::~nsFaviconService()
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{
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NS_ASSERTION(gFaviconService == this,
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"Deleting a non-singleton instance of the service");
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if (gFaviconService == this)
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gFaviconService = nullptr;
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}
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nsresult
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nsFaviconService::Init()
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{
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mDB = Database::GetDatabase();
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NS_ENSURE_STATE(mDB);
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mOptimizedIconDimension = Preferences::GetInt(
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"places.favicons.optimizeToDimension", OPTIMIZED_FAVICON_DIMENSION
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);
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mExpireUnassociatedIconsTimer = do_CreateInstance("@mozilla.org/timer;1");
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NS_ENSURE_STATE(mExpireUnassociatedIconsTimer);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::ExpireAllFavicons()
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{
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nsCOMPtr<mozIStorageAsyncStatement> unlinkIconsStmt = mDB->GetAsyncStatement(
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"UPDATE moz_places "
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"SET favicon_id = NULL "
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"WHERE favicon_id NOT NULL"
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);
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NS_ENSURE_STATE(unlinkIconsStmt);
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nsCOMPtr<mozIStorageAsyncStatement> removeIconsStmt = mDB->GetAsyncStatement(
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"DELETE FROM moz_favicons WHERE id NOT IN ("
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"SELECT favicon_id FROM moz_places WHERE favicon_id NOT NULL "
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")"
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);
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NS_ENSURE_STATE(removeIconsStmt);
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mozIStorageBaseStatement* stmts[] = {
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unlinkIconsStmt.get()
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, removeIconsStmt.get()
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};
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nsCOMPtr<mozIStoragePendingStatement> ps;
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nsRefPtr<ExpireFaviconsStatementCallbackNotifier> callback =
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new ExpireFaviconsStatementCallbackNotifier();
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nsresult rv = mDB->MainConn()->ExecuteAsync(
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stmts, ArrayLength(stmts), callback, getter_AddRefs(ps)
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);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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//// nsITimerCallback
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static PLDHashOperator
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ExpireNonrecentUnassociatedIconsEnumerator(
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UnassociatedIconHashKey* aIconKey,
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void* aNow)
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{
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PRTime now = *(reinterpret_cast<PRTime*>(aNow));
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if (now - aIconKey->created >= UNASSOCIATED_ICON_EXPIRY_INTERVAL) {
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return PL_DHASH_REMOVE;
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}
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return PL_DHASH_NEXT;
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}
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NS_IMETHODIMP
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nsFaviconService::Notify(nsITimer* timer)
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{
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if (timer != mExpireUnassociatedIconsTimer.get()) {
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return NS_ERROR_INVALID_ARG;
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}
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PRTime now = PR_Now();
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mUnassociatedIcons.EnumerateEntries(
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ExpireNonrecentUnassociatedIconsEnumerator, &now);
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// Re-init the expiry timer if the cache isn't empty.
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if (mUnassociatedIcons.Count() > 0) {
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mExpireUnassociatedIconsTimer->InitWithCallback(
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this, UNASSOCIATED_ICON_EXPIRY_INTERVAL, nsITimer::TYPE_ONE_SHOT);
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}
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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//// nsIFaviconService
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NS_IMETHODIMP
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nsFaviconService::GetDefaultFavicon(nsIURI** _retval)
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{
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NS_ENSURE_ARG_POINTER(_retval);
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// not found, use default
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if (!mDefaultIcon) {
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nsresult rv = NS_NewURI(getter_AddRefs(mDefaultIcon),
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NS_LITERAL_CSTRING(FAVICON_DEFAULT_URL));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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return mDefaultIcon->Clone(_retval);
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}
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void
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nsFaviconService::SendFaviconNotifications(nsIURI* aPageURI,
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nsIURI* aFaviconURI,
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const nsACString& aGUID)
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{
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nsAutoCString faviconSpec;
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nsNavHistory* history = nsNavHistory::GetHistoryService();
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if (history && NS_SUCCEEDED(aFaviconURI->GetSpec(faviconSpec))) {
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history->SendPageChangedNotification(aPageURI,
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nsINavHistoryObserver::ATTRIBUTE_FAVICON,
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NS_ConvertUTF8toUTF16(faviconSpec),
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aGUID);
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}
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}
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NS_IMETHODIMP
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nsFaviconService::SetAndFetchFaviconForPage(nsIURI* aPageURI,
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nsIURI* aFaviconURI,
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bool aForceReload,
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uint32_t aFaviconLoadType,
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nsIFaviconDataCallback* aCallback)
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{
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NS_ENSURE_ARG(aPageURI);
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NS_ENSURE_ARG(aFaviconURI);
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// If a favicon is in the failed cache, only load it during a forced reload.
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bool previouslyFailed;
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nsresult rv = IsFailedFavicon(aFaviconURI, &previouslyFailed);
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NS_ENSURE_SUCCESS(rv, rv);
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if (previouslyFailed) {
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if (aForceReload)
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RemoveFailedFavicon(aFaviconURI);
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else
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return NS_OK;
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}
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// Check if the icon already exists and fetch it from the network, if needed.
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// Finally associate the icon to the requested page if not yet associated.
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rv = AsyncFetchAndSetIconForPage::start(
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aFaviconURI, aPageURI, aForceReload ? FETCH_ALWAYS : FETCH_IF_MISSING,
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aFaviconLoadType, aCallback
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);
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NS_ENSURE_SUCCESS(rv, rv);
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// DB will be updated and observers notified when data has finished loading.
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::ReplaceFaviconData(nsIURI* aFaviconURI,
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const uint8_t* aData,
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uint32_t aDataLen,
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const nsACString& aMimeType,
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PRTime aExpiration)
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{
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NS_ENSURE_ARG(aFaviconURI);
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NS_ENSURE_ARG(aData);
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NS_ENSURE_TRUE(aDataLen > 0, NS_ERROR_INVALID_ARG);
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NS_ENSURE_TRUE(aMimeType.Length() > 0, NS_ERROR_INVALID_ARG);
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if (aExpiration == 0) {
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aExpiration = PR_Now() + MAX_FAVICON_EXPIRATION;
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}
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UnassociatedIconHashKey* iconKey = mUnassociatedIcons.PutEntry(aFaviconURI);
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if (!iconKey) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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iconKey->created = PR_Now();
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// If the cache contains unassociated icons, an expiry timer should already exist, otherwise
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// there may be a timer left hanging around, so make sure we fire a new one.
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int32_t unassociatedCount = mUnassociatedIcons.Count();
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if (unassociatedCount == 1) {
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mExpireUnassociatedIconsTimer->Cancel();
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mExpireUnassociatedIconsTimer->InitWithCallback(
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this, UNASSOCIATED_ICON_EXPIRY_INTERVAL, nsITimer::TYPE_ONE_SHOT);
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}
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IconData* iconData = &(iconKey->iconData);
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iconData->expiration = aExpiration;
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iconData->status = ICON_STATUS_CACHED;
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iconData->fetchMode = FETCH_NEVER;
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nsresult rv = aFaviconURI->GetSpec(iconData->spec);
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NS_ENSURE_SUCCESS(rv, rv);
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// If the page provided a large image for the favicon (eg, a highres image
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// or a multiresolution .ico file), we don't want to store more data than
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// needed.
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if (aDataLen > MAX_ICON_FILESIZE(mOptimizedIconDimension)) {
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rv = OptimizeFaviconImage(aData, aDataLen, aMimeType, iconData->data, iconData->mimeType);
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NS_ENSURE_SUCCESS(rv, rv);
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if (iconData->data.Length() > MAX_FAVICON_SIZE) {
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// We cannot optimize this favicon size and we are over the maximum size
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// allowed, so we will not save data to the db to avoid bloating it.
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mUnassociatedIcons.RemoveEntry(aFaviconURI);
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return NS_ERROR_FAILURE;
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}
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} else {
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iconData->mimeType.Assign(aMimeType);
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iconData->data.Assign(TO_CHARBUFFER(aData), aDataLen);
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}
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// If the database contains an icon at the given url, we will update the
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// database immediately so that the associated pages are kept in sync.
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// Otherwise, do nothing and let the icon be picked up from the memory hash.
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rv = AsyncReplaceFaviconData::start(iconData);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::ReplaceFaviconDataFromDataURL(nsIURI* aFaviconURI,
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const nsAString& aDataURL,
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PRTime aExpiration)
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{
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NS_ENSURE_ARG(aFaviconURI);
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NS_ENSURE_TRUE(aDataURL.Length() > 0, NS_ERROR_INVALID_ARG);
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if (aExpiration == 0) {
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aExpiration = PR_Now() + MAX_FAVICON_EXPIRATION;
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}
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nsCOMPtr<nsIURI> dataURI;
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nsresult rv = NS_NewURI(getter_AddRefs(dataURI), aDataURL);
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NS_ENSURE_SUCCESS(rv, rv);
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// Use the data: protocol handler to convert the data.
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nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIProtocolHandler> protocolHandler;
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rv = ioService->GetProtocolHandler("data", getter_AddRefs(protocolHandler));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIChannel> channel;
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rv = protocolHandler->NewChannel(dataURI, getter_AddRefs(channel));
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NS_ENSURE_SUCCESS(rv, rv);
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// Blocking stream is OK for data URIs.
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nsCOMPtr<nsIInputStream> stream;
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rv = channel->Open(getter_AddRefs(stream));
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NS_ENSURE_SUCCESS(rv, rv);
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uint64_t available64;
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rv = stream->Available(&available64);
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NS_ENSURE_SUCCESS(rv, rv);
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if (available64 == 0 || available64 > UINT32_MAX / sizeof(uint8_t))
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return NS_ERROR_FILE_TOO_BIG;
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uint32_t available = (uint32_t)available64;
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// Read all the decoded data.
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uint8_t* buffer = static_cast<uint8_t*>
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(nsMemory::Alloc(sizeof(uint8_t) * available));
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if (!buffer)
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return NS_ERROR_OUT_OF_MEMORY;
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uint32_t numRead;
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rv = stream->Read(TO_CHARBUFFER(buffer), available, &numRead);
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if (NS_FAILED(rv) || numRead != available) {
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nsMemory::Free(buffer);
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return rv;
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}
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nsAutoCString mimeType;
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rv = channel->GetContentType(mimeType);
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if (NS_FAILED(rv)) {
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nsMemory::Free(buffer);
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return rv;
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}
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// ReplaceFaviconData can now do the dirty work.
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rv = ReplaceFaviconData(aFaviconURI, buffer, available, mimeType, aExpiration);
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nsMemory::Free(buffer);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::GetFaviconURLForPage(nsIURI *aPageURI,
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nsIFaviconDataCallback* aCallback)
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{
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NS_ENSURE_ARG(aPageURI);
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NS_ENSURE_ARG(aCallback);
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nsresult rv = AsyncGetFaviconURLForPage::start(aPageURI, aCallback);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::GetFaviconDataForPage(nsIURI* aPageURI,
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nsIFaviconDataCallback* aCallback)
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{
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NS_ENSURE_ARG(aPageURI);
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NS_ENSURE_ARG(aCallback);
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nsresult rv = AsyncGetFaviconDataForPage::start(aPageURI, aCallback);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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nsresult
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nsFaviconService::GetFaviconLinkForIcon(nsIURI* aFaviconURI,
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nsIURI** aOutputURI)
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{
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NS_ENSURE_ARG(aFaviconURI);
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NS_ENSURE_ARG_POINTER(aOutputURI);
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nsAutoCString spec;
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if (aFaviconURI) {
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nsresult rv = aFaviconURI->GetSpec(spec);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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return GetFaviconLinkForIconString(spec, aOutputURI);
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}
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static PLDHashOperator
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ExpireFailedFaviconsCallback(nsCStringHashKey::KeyType aKey,
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uint32_t& aData,
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void* userArg)
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{
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uint32_t* threshold = reinterpret_cast<uint32_t*>(userArg);
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if (aData < *threshold)
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return PL_DHASH_REMOVE;
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return PL_DHASH_NEXT;
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}
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NS_IMETHODIMP
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nsFaviconService::AddFailedFavicon(nsIURI* aFaviconURI)
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{
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NS_ENSURE_ARG(aFaviconURI);
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nsAutoCString spec;
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nsresult rv = aFaviconURI->GetSpec(spec);
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NS_ENSURE_SUCCESS(rv, rv);
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mFailedFavicons.Put(spec, mFailedFaviconSerial);
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mFailedFaviconSerial ++;
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if (mFailedFavicons.Count() > MAX_FAVICON_CACHE_SIZE) {
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// need to expire some entries, delete the FAVICON_CACHE_REDUCE_COUNT number
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// of items that are the oldest
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uint32_t threshold = mFailedFaviconSerial -
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MAX_FAVICON_CACHE_SIZE + FAVICON_CACHE_REDUCE_COUNT;
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mFailedFavicons.Enumerate(ExpireFailedFaviconsCallback, &threshold);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::RemoveFailedFavicon(nsIURI* aFaviconURI)
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{
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NS_ENSURE_ARG(aFaviconURI);
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nsAutoCString spec;
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nsresult rv = aFaviconURI->GetSpec(spec);
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NS_ENSURE_SUCCESS(rv, rv);
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// we silently do nothing and succeed if the icon is not in the cache
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mFailedFavicons.Remove(spec);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFaviconService::IsFailedFavicon(nsIURI* aFaviconURI, bool* _retval)
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{
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NS_ENSURE_ARG(aFaviconURI);
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nsAutoCString spec;
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nsresult rv = aFaviconURI->GetSpec(spec);
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NS_ENSURE_SUCCESS(rv, rv);
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uint32_t serial;
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*_retval = mFailedFavicons.Get(spec, &serial);
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return NS_OK;
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}
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// nsFaviconService::GetFaviconLinkForIconString
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//
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// This computes a favicon URL with string input and using the cached
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// default one to minimize parsing.
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nsresult
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nsFaviconService::GetFaviconLinkForIconString(const nsCString& aSpec,
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nsIURI** aOutput)
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{
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if (aSpec.IsEmpty()) {
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// default icon for empty strings
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if (! mDefaultIcon) {
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nsresult rv = NS_NewURI(getter_AddRefs(mDefaultIcon),
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NS_LITERAL_CSTRING(FAVICON_DEFAULT_URL));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
return mDefaultIcon->Clone(aOutput);
|
|
}
|
|
|
|
if (StringBeginsWith(aSpec, NS_LITERAL_CSTRING("chrome:"))) {
|
|
// pass through for chrome URLs, since they can be referenced without
|
|
// this service
|
|
return NS_NewURI(aOutput, aSpec);
|
|
}
|
|
|
|
nsAutoCString annoUri;
|
|
annoUri.AssignLiteral("moz-anno:" FAVICON_ANNOTATION_NAME ":");
|
|
annoUri += aSpec;
|
|
return NS_NewURI(aOutput, annoUri);
|
|
}
|
|
|
|
|
|
// nsFaviconService::GetFaviconSpecForIconString
|
|
//
|
|
// This computes a favicon spec for when you don't want a URI object (as in
|
|
// the tree view implementation), sparing all parsing and normalization.
|
|
void
|
|
nsFaviconService::GetFaviconSpecForIconString(const nsCString& aSpec,
|
|
nsACString& aOutput)
|
|
{
|
|
if (aSpec.IsEmpty()) {
|
|
aOutput.AssignLiteral(FAVICON_DEFAULT_URL);
|
|
} else if (StringBeginsWith(aSpec, NS_LITERAL_CSTRING("chrome:"))) {
|
|
aOutput = aSpec;
|
|
} else {
|
|
aOutput.AssignLiteral("moz-anno:" FAVICON_ANNOTATION_NAME ":");
|
|
aOutput += aSpec;
|
|
}
|
|
}
|
|
|
|
|
|
// nsFaviconService::OptimizeFaviconImage
|
|
//
|
|
// Given a blob of data (a image file already read into a buffer), optimize
|
|
// its size by recompressing it as a 16x16 PNG.
|
|
nsresult
|
|
nsFaviconService::OptimizeFaviconImage(const uint8_t* aData, uint32_t aDataLen,
|
|
const nsACString& aMimeType,
|
|
nsACString& aNewData,
|
|
nsACString& aNewMimeType)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<imgITools> imgtool = do_CreateInstance("@mozilla.org/image/tools;1");
|
|
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
rv = NS_NewByteInputStream(getter_AddRefs(stream),
|
|
reinterpret_cast<const char*>(aData), aDataLen,
|
|
NS_ASSIGNMENT_DEPEND);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// decode image
|
|
nsCOMPtr<imgIContainer> container;
|
|
rv = imgtool->DecodeImageData(stream, aMimeType, getter_AddRefs(container));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aNewMimeType.AssignLiteral(DEFAULT_MIME_TYPE);
|
|
|
|
// scale and recompress
|
|
nsCOMPtr<nsIInputStream> iconStream;
|
|
rv = imgtool->EncodeScaledImage(container, aNewMimeType,
|
|
mOptimizedIconDimension,
|
|
mOptimizedIconDimension,
|
|
EmptyString(),
|
|
getter_AddRefs(iconStream));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Read the stream into a new buffer.
|
|
rv = NS_ConsumeStream(iconStream, UINT32_MAX, aNewData);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsFaviconService::GetFaviconDataAsync(nsIURI* aFaviconURI,
|
|
mozIStorageStatementCallback *aCallback)
|
|
{
|
|
NS_ASSERTION(aCallback, "Doesn't make sense to call this without a callback");
|
|
nsCOMPtr<mozIStorageAsyncStatement> stmt = mDB->GetAsyncStatement(
|
|
"SELECT f.data, f.mime_type FROM moz_favicons f WHERE url = :icon_url"
|
|
);
|
|
NS_ENSURE_STATE(stmt);
|
|
|
|
nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<mozIStoragePendingStatement> pendingStatement;
|
|
return stmt->ExecuteAsync(aCallback, getter_AddRefs(pendingStatement));
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//// ExpireFaviconsStatementCallbackNotifier
|
|
|
|
ExpireFaviconsStatementCallbackNotifier::ExpireFaviconsStatementCallbackNotifier()
|
|
{
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
ExpireFaviconsStatementCallbackNotifier::HandleCompletion(uint16_t aReason)
|
|
{
|
|
// We should dispatch only if expiration has been successful.
|
|
if (aReason != mozIStorageStatementCallback::REASON_FINISHED)
|
|
return NS_OK;
|
|
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
(void)observerService->NotifyObservers(nullptr,
|
|
NS_PLACES_FAVICONS_EXPIRED_TOPIC_ID,
|
|
nullptr);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|