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gecko-dev/toolkit/components/places/nsFaviconService.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* This is the favicon service, which stores favicons for web pages with your
* history as you browse. It is also used to save the favicons for bookmarks.
*
* DANGER: The history query system makes assumptions about the favicon storage
* so that icons can be quickly generated for history/bookmark result sets. If
* you change the database layout at all, you will have to update both services.
*/
#include "nsFaviconService.h"
#include "nsNavHistory.h"
#include "nsPlacesMacros.h"
#include "Helpers.h"
#include "nsNetUtil.h"
#include "nsReadableUtils.h"
#include "nsStreamUtils.h"
#include "nsStringStream.h"
#include "plbase64.h"
#include "nsIClassInfoImpl.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/LoadInfo.h"
#include "mozilla/Preferences.h"
#include "nsILoadInfo.h"
#include "nsIContentPolicy.h"
#include "nsContentUtils.h"
// For large favicons optimization.
#include "imgITools.h"
#include "imgIContainer.h"
// The target dimension, in pixels, for favicons we optimize.
#define OPTIMIZED_FAVICON_DIMENSION 32
#define MAX_FAILED_FAVICONS 256
#define FAVICON_CACHE_REDUCE_COUNT 64
#define UNASSOCIATED_FAVICONS_LENGTH 32
// When replaceFaviconData is called, we store the icons in an in-memory cache
// instead of in storage. Icons in the cache are expired according to this
// interval.
#define UNASSOCIATED_ICON_EXPIRY_INTERVAL 60000
// The MIME type of the default favicon and favicons created by
// OptimizeFaviconImage.
#define DEFAULT_MIME_TYPE "image/png"
using namespace mozilla;
using namespace mozilla::places;
/**
* Used to notify a topic to system observers on async execute completion.
* Will throw on error.
*/
class ExpireFaviconsStatementCallbackNotifier : public AsyncStatementCallback
{
public:
ExpireFaviconsStatementCallbackNotifier();
NS_IMETHOD HandleCompletion(uint16_t aReason);
};
PLACES_FACTORY_SINGLETON_IMPLEMENTATION(nsFaviconService, gFaviconService)
NS_IMPL_CLASSINFO(nsFaviconService, nullptr, 0, NS_FAVICONSERVICE_CID)
NS_IMPL_ISUPPORTS_CI(
nsFaviconService
, nsIFaviconService
, mozIAsyncFavicons
, nsITimerCallback
)
nsFaviconService::nsFaviconService()
: mFailedFaviconSerial(0)
, mFailedFavicons(MAX_FAILED_FAVICONS / 2)
, mUnassociatedIcons(UNASSOCIATED_FAVICONS_LENGTH)
{
NS_ASSERTION(!gFaviconService,
"Attempting to create two instances of the service!");
gFaviconService = this;
}
nsFaviconService::~nsFaviconService()
{
NS_ASSERTION(gFaviconService == this,
"Deleting a non-singleton instance of the service");
if (gFaviconService == this)
gFaviconService = nullptr;
}
nsresult
nsFaviconService::Init()
{
mDB = Database::GetDatabase();
NS_ENSURE_STATE(mDB);
mExpireUnassociatedIconsTimer = do_CreateInstance("@mozilla.org/timer;1");
NS_ENSURE_STATE(mExpireUnassociatedIconsTimer);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::ExpireAllFavicons()
{
nsCOMPtr<mozIStorageAsyncStatement> unlinkIconsStmt = mDB->GetAsyncStatement(
"UPDATE moz_places "
"SET favicon_id = NULL "
"WHERE favicon_id NOT NULL"
);
NS_ENSURE_STATE(unlinkIconsStmt);
nsCOMPtr<mozIStorageAsyncStatement> removeIconsStmt = mDB->GetAsyncStatement(
"DELETE FROM moz_favicons WHERE id NOT IN ("
"SELECT favicon_id FROM moz_places WHERE favicon_id NOT NULL "
")"
);
NS_ENSURE_STATE(removeIconsStmt);
mozIStorageBaseStatement* stmts[] = {
unlinkIconsStmt.get()
, removeIconsStmt.get()
};
nsCOMPtr<mozIStoragePendingStatement> ps;
RefPtr<ExpireFaviconsStatementCallbackNotifier> callback =
new ExpireFaviconsStatementCallbackNotifier();
nsresult rv = mDB->MainConn()->ExecuteAsync(
stmts, ArrayLength(stmts), callback, getter_AddRefs(ps)
);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// nsITimerCallback
NS_IMETHODIMP
nsFaviconService::Notify(nsITimer* timer)
{
if (timer != mExpireUnassociatedIconsTimer.get()) {
return NS_ERROR_INVALID_ARG;
}
PRTime now = PR_Now();
for (auto iter = mUnassociatedIcons.Iter(); !iter.Done(); iter.Next()) {
UnassociatedIconHashKey* iconKey = iter.Get();
if (now - iconKey->created >= UNASSOCIATED_ICON_EXPIRY_INTERVAL) {
iter.Remove();
}
}
// Re-init the expiry timer if the cache isn't empty.
if (mUnassociatedIcons.Count() > 0) {
mExpireUnassociatedIconsTimer->InitWithCallback(
this, UNASSOCIATED_ICON_EXPIRY_INTERVAL, nsITimer::TYPE_ONE_SHOT);
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// nsIFaviconService
NS_IMETHODIMP
nsFaviconService::GetDefaultFavicon(nsIURI** _retval)
{
NS_ENSURE_ARG_POINTER(_retval);
// not found, use default
if (!mDefaultIcon) {
nsresult rv = NS_NewURI(getter_AddRefs(mDefaultIcon),
NS_LITERAL_CSTRING(FAVICON_DEFAULT_URL));
NS_ENSURE_SUCCESS(rv, rv);
}
return mDefaultIcon->Clone(_retval);
}
void
nsFaviconService::SendFaviconNotifications(nsIURI* aPageURI,
nsIURI* aFaviconURI,
const nsACString& aGUID)
{
nsAutoCString faviconSpec;
nsNavHistory* history = nsNavHistory::GetHistoryService();
if (history && NS_SUCCEEDED(aFaviconURI->GetSpec(faviconSpec))) {
history->SendPageChangedNotification(aPageURI,
nsINavHistoryObserver::ATTRIBUTE_FAVICON,
NS_ConvertUTF8toUTF16(faviconSpec),
aGUID);
}
}
NS_IMETHODIMP
nsFaviconService::SetAndFetchFaviconForPage(nsIURI* aPageURI,
nsIURI* aFaviconURI,
bool aForceReload,
uint32_t aFaviconLoadType,
nsIFaviconDataCallback* aCallback,
nsIPrincipal* aLoadingPrincipal,
mozIPlacesPendingOperation **_canceler)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aFaviconURI);
NS_ENSURE_ARG_POINTER(_canceler);
// If a favicon is in the failed cache, only load it during a forced reload.
bool previouslyFailed;
nsresult rv = IsFailedFavicon(aFaviconURI, &previouslyFailed);
NS_ENSURE_SUCCESS(rv, rv);
if (previouslyFailed) {
if (aForceReload)
RemoveFailedFavicon(aFaviconURI);
else
return NS_OK;
}
nsCOMPtr<nsIPrincipal> loadingPrincipal = aLoadingPrincipal;
MOZ_ASSERT(loadingPrincipal, "please provide aLoadingPrincipal for this favicon");
if (!loadingPrincipal) {
// Bug 1227289 : Let's default to the systemPrincipal if no loadingPrincipal is provided
// so addons not providing a loadingPrincipal do not break in release builds.
const char16_t* params[] = {
u"nsFaviconService::setAndFetchFaviconForPage()",
u"nsFaviconService::setAndFetchFaviconForPage(..., [optional aLoadingPrincipal])"
};
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Security by Default"),
nullptr, // aDocument
nsContentUtils::eNECKO_PROPERTIES,
"APIDeprecationWarning",
params, ArrayLength(params));
loadingPrincipal = nsContentUtils::GetSystemPrincipal();
}
NS_ENSURE_TRUE(loadingPrincipal, NS_ERROR_FAILURE);
// Check if the icon already exists and fetch it from the network, if needed.
// Finally associate the icon to the requested page if not yet associated.
bool loadPrivate = aFaviconLoadType == nsIFaviconService::FAVICON_LOAD_PRIVATE;
PageData page;
rv = aPageURI->GetSpec(page.spec);
NS_ENSURE_SUCCESS(rv, rv);
// URIs can arguably miss a host.
(void)GetReversedHostname(aPageURI, page.revHost);
bool canAddToHistory;
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(navHistory, NS_ERROR_OUT_OF_MEMORY);
rv = navHistory->CanAddURI(aPageURI, &canAddToHistory);
NS_ENSURE_SUCCESS(rv, rv);
page.canAddToHistory = !!canAddToHistory && !loadPrivate;
IconData icon;
UnassociatedIconHashKey* iconKey = mUnassociatedIcons.GetEntry(aFaviconURI);
if (iconKey) {
icon = iconKey->iconData;
mUnassociatedIcons.RemoveEntry(iconKey);
} else {
icon.fetchMode = aForceReload ? FETCH_ALWAYS : FETCH_IF_MISSING;
rv = aFaviconURI->GetSpec(icon.spec);
NS_ENSURE_SUCCESS(rv, rv);
}
// If the page url points to an image, the icon's url will be the same.
// In future evaluate to store a resample of the image. For now avoid that
// for database size concerns.
// Don't store favicons for error pages too.
if (icon.spec.Equals(page.spec) ||
icon.spec.Equals(FAVICON_ERRORPAGE_URL)) {
return NS_OK;
}
RefPtr<AsyncFetchAndSetIconForPage> event =
new AsyncFetchAndSetIconForPage(icon, page, loadPrivate,
aCallback, aLoadingPrincipal);
// Get the target thread and start the work.
// DB will be updated and observers notified when data has finished loading.
RefPtr<Database> DB = Database::GetDatabase();
NS_ENSURE_STATE(DB);
DB->DispatchToAsyncThread(event);
// Return this event to the caller to allow aborting an eventual fetch.
event.forget(_canceler);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::ReplaceFaviconData(nsIURI* aFaviconURI,
const uint8_t* aData,
uint32_t aDataLen,
const nsACString& aMimeType,
PRTime aExpiration)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_ARG(aFaviconURI);
NS_ENSURE_ARG(aData);
NS_ENSURE_TRUE(aDataLen > 0, NS_ERROR_INVALID_ARG);
NS_ENSURE_TRUE(aMimeType.Length() > 0, NS_ERROR_INVALID_ARG);
if (aExpiration == 0) {
aExpiration = PR_Now() + MAX_FAVICON_EXPIRATION;
}
UnassociatedIconHashKey* iconKey = mUnassociatedIcons.PutEntry(aFaviconURI);
if (!iconKey) {
return NS_ERROR_OUT_OF_MEMORY;
}
iconKey->created = PR_Now();
// If the cache contains unassociated icons, an expiry timer should already exist, otherwise
// there may be a timer left hanging around, so make sure we fire a new one.
int32_t unassociatedCount = mUnassociatedIcons.Count();
if (unassociatedCount == 1) {
mExpireUnassociatedIconsTimer->Cancel();
mExpireUnassociatedIconsTimer->InitWithCallback(
this, UNASSOCIATED_ICON_EXPIRY_INTERVAL, nsITimer::TYPE_ONE_SHOT);
}
IconData* iconData = &(iconKey->iconData);
iconData->expiration = aExpiration;
iconData->status = ICON_STATUS_CACHED;
iconData->fetchMode = FETCH_NEVER;
nsresult rv = aFaviconURI->GetSpec(iconData->spec);
NS_ENSURE_SUCCESS(rv, rv);
// If the page provided a large image for the favicon (eg, a highres image
// or a multiresolution .ico file), we don't want to store more data than
// needed.
if (aDataLen > MAX_FAVICON_FILESIZE) {
rv = OptimizeFaviconImage(aData, aDataLen, aMimeType, iconData->data, iconData->mimeType);
NS_ENSURE_SUCCESS(rv, rv);
if (iconData->data.Length() > nsIFaviconService::MAX_FAVICON_BUFFER_SIZE) {
// We cannot optimize this favicon size and we are over the maximum size
// allowed, so we will not save data to the db to avoid bloating it.
mUnassociatedIcons.RemoveEntry(aFaviconURI);
return NS_ERROR_FAILURE;
}
} else {
iconData->mimeType.Assign(aMimeType);
iconData->data.Assign(TO_CHARBUFFER(aData), aDataLen);
}
// If the database contains an icon at the given url, we will update the
// database immediately so that the associated pages are kept in sync.
// Otherwise, do nothing and let the icon be picked up from the memory hash.
RefPtr<AsyncReplaceFaviconData> event = new AsyncReplaceFaviconData(*iconData);
RefPtr<Database> DB = Database::GetDatabase();
NS_ENSURE_STATE(DB);
DB->DispatchToAsyncThread(event);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::ReplaceFaviconDataFromDataURL(nsIURI* aFaviconURI,
const nsAString& aDataURL,
PRTime aExpiration,
nsIPrincipal* aLoadingPrincipal)
{
NS_ENSURE_ARG(aFaviconURI);
NS_ENSURE_TRUE(aDataURL.Length() > 0, NS_ERROR_INVALID_ARG);
if (aExpiration == 0) {
aExpiration = PR_Now() + MAX_FAVICON_EXPIRATION;
}
nsCOMPtr<nsIURI> dataURI;
nsresult rv = NS_NewURI(getter_AddRefs(dataURI), aDataURL);
NS_ENSURE_SUCCESS(rv, rv);
// Use the data: protocol handler to convert the data.
nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIProtocolHandler> protocolHandler;
rv = ioService->GetProtocolHandler("data", getter_AddRefs(protocolHandler));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPrincipal> loadingPrincipal = aLoadingPrincipal;
MOZ_ASSERT(loadingPrincipal, "please provide aLoadingPrincipal for this favicon");
if (!loadingPrincipal) {
// Bug 1227289 : Let's default to the systemPrincipal if no loadingPrincipal is provided
// so addons not providing a loadingPrincipal do not break in release builds.
const char16_t* params[] = {
u"nsFaviconService::ReplaceFaviconDataFromDataURL()",
u"nsFaviconService::ReplaceFaviconDataFromDataURL(..., [optional aLoadingPrincipal])"
};
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Security by Default"),
nullptr, // aDocument
nsContentUtils::eNECKO_PROPERTIES,
"APIDeprecationWarning",
params, ArrayLength(params));
loadingPrincipal = nsContentUtils::GetSystemPrincipal();
}
NS_ENSURE_TRUE(loadingPrincipal, NS_ERROR_FAILURE);
nsCOMPtr<nsILoadInfo> loadInfo =
new mozilla::LoadInfo(loadingPrincipal,
nullptr, // aTriggeringPrincipal
nullptr, // aLoadingNode
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS |
nsILoadInfo::SEC_ALLOW_CHROME |
nsILoadInfo::SEC_DISALLOW_SCRIPT,
nsIContentPolicy::TYPE_INTERNAL_IMAGE);
nsCOMPtr<nsIChannel> channel;
rv = protocolHandler->NewChannel2(dataURI, loadInfo, getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, rv);
// Blocking stream is OK for data URIs.
nsCOMPtr<nsIInputStream> stream;
rv = channel->Open2(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, rv);
uint64_t available64;
rv = stream->Available(&available64);
NS_ENSURE_SUCCESS(rv, rv);
if (available64 == 0 || available64 > UINT32_MAX / sizeof(uint8_t))
return NS_ERROR_FILE_TOO_BIG;
uint32_t available = (uint32_t)available64;
// Read all the decoded data.
uint8_t* buffer = static_cast<uint8_t*>
(moz_xmalloc(sizeof(uint8_t) * available));
if (!buffer)
return NS_ERROR_OUT_OF_MEMORY;
uint32_t numRead;
rv = stream->Read(TO_CHARBUFFER(buffer), available, &numRead);
if (NS_FAILED(rv) || numRead != available) {
free(buffer);
return rv;
}
nsAutoCString mimeType;
rv = channel->GetContentType(mimeType);
if (NS_FAILED(rv)) {
free(buffer);
return rv;
}
// ReplaceFaviconData can now do the dirty work.
rv = ReplaceFaviconData(aFaviconURI, buffer, available, mimeType, aExpiration);
free(buffer);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconURLForPage(nsIURI *aPageURI,
nsIFaviconDataCallback* aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aCallback);
nsAutoCString pageSpec;
nsresult rv = aPageURI->GetSpec(pageSpec);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<AsyncGetFaviconURLForPage> event =
new AsyncGetFaviconURLForPage(pageSpec, aCallback);
RefPtr<Database> DB = Database::GetDatabase();
NS_ENSURE_STATE(DB);
DB->DispatchToAsyncThread(event);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconDataForPage(nsIURI* aPageURI,
nsIFaviconDataCallback* aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aCallback);
nsAutoCString pageSpec;
nsresult rv = aPageURI->GetSpec(pageSpec);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<AsyncGetFaviconDataForPage> event =
new AsyncGetFaviconDataForPage(pageSpec, aCallback);
RefPtr<Database> DB = Database::GetDatabase();
NS_ENSURE_STATE(DB);
DB->DispatchToAsyncThread(event);
return NS_OK;
}
nsresult
nsFaviconService::GetFaviconLinkForIcon(nsIURI* aFaviconURI,
nsIURI** aOutputURI)
{
NS_ENSURE_ARG(aFaviconURI);
NS_ENSURE_ARG_POINTER(aOutputURI);
nsAutoCString spec;
if (aFaviconURI) {
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
}
return GetFaviconLinkForIconString(spec, aOutputURI);
}
NS_IMETHODIMP
nsFaviconService::AddFailedFavicon(nsIURI* aFaviconURI)
{
NS_ENSURE_ARG(aFaviconURI);
nsAutoCString spec;
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
mFailedFavicons.Put(spec, mFailedFaviconSerial);
mFailedFaviconSerial ++;
if (mFailedFavicons.Count() > MAX_FAILED_FAVICONS) {
// need to expire some entries, delete the FAVICON_CACHE_REDUCE_COUNT number
// of items that are the oldest
uint32_t threshold = mFailedFaviconSerial -
MAX_FAILED_FAVICONS + FAVICON_CACHE_REDUCE_COUNT;
for (auto iter = mFailedFavicons.Iter(); !iter.Done(); iter.Next()) {
if (iter.Data() < threshold) {
iter.Remove();
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::RemoveFailedFavicon(nsIURI* aFaviconURI)
{
NS_ENSURE_ARG(aFaviconURI);
nsAutoCString spec;
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
// we silently do nothing and succeed if the icon is not in the cache
mFailedFavicons.Remove(spec);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::IsFailedFavicon(nsIURI* aFaviconURI, bool* _retval)
{
NS_ENSURE_ARG(aFaviconURI);
nsAutoCString spec;
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t serial;
*_retval = mFailedFavicons.Get(spec, &serial);
return NS_OK;
}
// nsFaviconService::GetFaviconLinkForIconString
//
// This computes a favicon URL with string input and using the cached
// default one to minimize parsing.
nsresult
nsFaviconService::GetFaviconLinkForIconString(const nsCString& aSpec,
nsIURI** aOutput)
{
if (aSpec.IsEmpty()) {
// default icon for empty strings
if (! mDefaultIcon) {
nsresult rv = NS_NewURI(getter_AddRefs(mDefaultIcon),
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,
OPTIMIZED_FAVICON_DIMENSION,
OPTIMIZED_FAVICON_DIMENSION,
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);
// Ignore the ref part of the URI before querying the database because
// we may have added a media fragment for rendering purposes.
nsAutoCString faviconURI;
aFaviconURI->GetSpecIgnoringRef(faviconURI);
nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("icon_url"), faviconURI);
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;
}
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