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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 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Places.
*
* The Initial Developer of the Original Code is
* Google Inc.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brett Wilson <brettw@gmail.com> (original author)
* Ehsan Akhgari <ehsan.akhgari@gmail.com>
* Shawn Wilsher <me@shawnwilsher.com>
* Marco Bonardo <mak77@bonardo.net>
* Richard Newman <rnewman@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* 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 "nsPlacesTables.h"
#include "nsPlacesMacros.h"
#include "Helpers.h"
#include "AsyncFaviconHelpers.h"
#include "nsNavBookmarks.h"
#include "nsNavHistory.h"
#include "nsIPrefService.h"
#include "nsNetUtil.h"
#include "nsReadableUtils.h"
#include "nsStreamUtils.h"
#include "nsStringStream.h"
#include "plbase64.h"
#include "nsIClassInfoImpl.h"
// For large favicons optimization.
#include "imgITools.h"
#include "imgIContainer.h"
// Default value for mOptimizedIconDimension
#define OPTIMIZED_FAVICON_DIMENSION 16
#define MAX_FAVICON_CACHE_SIZE 256
#define FAVICON_CACHE_REDUCE_COUNT 64
/**
* The maximum time we will keep a favicon around. We always ask the cache, if
* we can, but default to this value if we do not get a time back, or the time
* is more in the future than this.
* Currently set to one week from now.
*/
#define MAX_FAVICON_EXPIRATION ((PRTime)7 * 24 * 60 * 60 * PR_USEC_PER_SEC)
// The MIME type of the default favicon and favicons created by
// OptimizeFaviconImage.
#define DEFAULT_MIME_TYPE "image/png"
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(bool* aFaviconsExpirationRunning);
NS_IMETHOD HandleCompletion(PRUint16 aReason);
private:
bool* mFaviconsExpirationRunning;
};
PLACES_FACTORY_SINGLETON_IMPLEMENTATION(nsFaviconService, gFaviconService)
NS_IMPL_CLASSINFO(nsFaviconService, NULL, 0, NS_FAVICONSERVICE_CID)
NS_IMPL_ISUPPORTS2_CI(
nsFaviconService
, nsIFaviconService
, mozIAsyncFavicons
)
nsFaviconService::nsFaviconService()
: mSyncStatements(mDBConn)
, mFaviconsExpirationRunning(false)
, mOptimizedIconDimension(OPTIMIZED_FAVICON_DIMENSION)
, mFailedFaviconSerial(0)
, mShuttingDown(false)
{
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 = nsnull;
}
nsresult
nsFaviconService::Init()
{
// Creation of history service will call InitTables.
nsNavHistory* historyService = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(historyService, NS_ERROR_OUT_OF_MEMORY);
mDBConn = historyService->GetStorageConnection();
NS_ENSURE_TRUE(mDBConn, NS_ERROR_FAILURE);
// Init failed favicon cache.
if (!mFailedFavicons.Init(MAX_FAVICON_CACHE_SIZE))
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsIPrefBranch> pb = do_GetService(NS_PREFSERVICE_CONTRACTID);
if (pb) {
(void)pb->GetIntPref("places.favicons.optimizeToDimension",
&mOptimizedIconDimension);
}
return NS_OK;
}
mozIStorageStatement*
nsFaviconService::GetStatement(const nsCOMPtr<mozIStorageStatement>& aStmt)
{
if (mShuttingDown)
return nsnull;
RETURN_IF_STMT(mDBGetIconInfo, NS_LITERAL_CSTRING(
"SELECT id, length(data), expiration FROM moz_favicons "
"WHERE url = :icon_url"));
RETURN_IF_STMT(mDBGetURL, NS_LITERAL_CSTRING(
"SELECT f.id, f.url, length(f.data), f.expiration "
"FROM moz_places h "
"JOIN moz_favicons f ON h.favicon_id = f.id "
"WHERE h.url = :page_url "
"LIMIT 1"));
RETURN_IF_STMT(mDBGetData, NS_LITERAL_CSTRING(
"SELECT f.data, f.mime_type FROM moz_favicons f WHERE url = :icon_url"));
RETURN_IF_STMT(mDBInsertIcon, NS_LITERAL_CSTRING(
"INSERT INTO moz_favicons (id, url, data, mime_type, expiration) "
"VALUES (:icon_id, :icon_url, :data, :mime_type, :expiration)"));
RETURN_IF_STMT(mDBUpdateIcon, NS_LITERAL_CSTRING(
"UPDATE moz_favicons SET data = :data, mime_type = :mime_type, "
"expiration = :expiration "
"WHERE id = :icon_id"));
RETURN_IF_STMT(mDBSetPageFavicon, NS_LITERAL_CSTRING(
"UPDATE moz_places SET favicon_id = :icon_id WHERE id = :page_id"));
RETURN_IF_STMT(mDBRemoveOnDiskReferences, NS_LITERAL_CSTRING(
"UPDATE moz_places "
"SET favicon_id = NULL "
"WHERE favicon_id NOT NULL"));
RETURN_IF_STMT(mDBRemoveAllFavicons, NS_LITERAL_CSTRING(
"DELETE FROM moz_favicons WHERE id NOT IN ("
"SELECT favicon_id FROM moz_places WHERE favicon_id NOT NULL "
")"));
return nsnull;
}
// nsFaviconService::InitTables
//
// Called by the history service to create the favicon table. The history
// service uses this table in its queries, so it must exist even if
// nobody has called the favicon service.
nsresult // static
nsFaviconService::InitTables(mozIStorageConnection* aDBConn)
{
nsresult rv;
PRBool exists = PR_FALSE;
aDBConn->TableExists(NS_LITERAL_CSTRING("moz_favicons"), &exists);
if (!exists) {
rv = aDBConn->ExecuteSimpleSQL(CREATE_MOZ_FAVICONS);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::ExpireAllFavicons()
{
mFaviconsExpirationRunning = true;
mozIStorageBaseStatement *stmts[] = {
GetStatement(mDBRemoveOnDiskReferences),
GetStatement(mDBRemoveAllFavicons),
};
NS_ENSURE_STATE(stmts[0] && stmts[1]);
nsCOMPtr<mozIStoragePendingStatement> ps;
nsCOMPtr<ExpireFaviconsStatementCallbackNotifier> callback =
new ExpireFaviconsStatementCallbackNotifier(&mFaviconsExpirationRunning);
nsresult rv = mDBConn->ExecuteAsync(stmts, NS_ARRAY_LENGTH(stmts), callback,
getter_AddRefs(ps));
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// nsIFaviconService
NS_IMETHODIMP
nsFaviconService::SetFaviconUrlForPage(nsIURI* aPageURI, nsIURI* aFaviconURI)
{
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aFaviconURI);
// If we are about to expire all favicons, don't bother setting a new one.
if (mFaviconsExpirationRunning) {
return NS_OK;
}
nsNavHistory* history = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(history, NS_ERROR_OUT_OF_MEMORY);
if (history->InPrivateBrowsingMode()) {
return NS_OK;
}
nsresult rv;
PRInt64 iconId = -1;
PRBool hasData = PR_FALSE;
{
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBGetIconInfo);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
PRBool hasResult = PR_FALSE;
if (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
// We already have an entry for this icon, just get its stats.
rv = stmt->GetInt64(0, &iconId);
NS_ENSURE_SUCCESS(rv, rv);
PRInt32 dataSize;
rv = stmt->GetInt32(1, &dataSize);
NS_ENSURE_SUCCESS(rv, rv);
if (dataSize > 0) {
hasData = PR_TRUE;
}
}
}
mozStorageTransaction transaction(mDBConn, PR_FALSE);
if (iconId == -1) {
// We did not find any entry for this icon, so create a new one.
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBInsertIcon);
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("icon_id"));
NS_ENSURE_SUCCESS(rv, rv);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("data"));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("mime_type"));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("expiration"));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
{
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(getInfoStmt, mDBGetIconInfo);
rv = URIBinder::Bind(getInfoStmt, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
PRBool hasResult;
rv = getInfoStmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(hasResult, "hasResult is false but the call succeeded?");
iconId = getInfoStmt->AsInt64(0);
}
}
// Now, link our icon entry with the page.
PRInt64 pageId;
nsCAutoString guid;
rv = history->GetOrCreateIdForPage(aPageURI, &pageId, guid);
NS_ENSURE_SUCCESS(rv, rv);
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBSetPageFavicon);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), pageId);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("icon_id"), iconId);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
rv = transaction.Commit();
NS_ENSURE_SUCCESS(rv, rv);
// Send favicon change notifications only if the icon has any data.
if (hasData) {
SendFaviconNotifications(aPageURI, aFaviconURI, guid);
}
return NS_OK;
}
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)
{
nsCAutoString 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::SetAndLoadFaviconForPage(nsIURI* aPageURI,
nsIURI* aFaviconURI,
PRBool aForceReload,
nsIFaviconDataCallback* aCallback)
{
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aFaviconURI);
if (mFaviconsExpirationRunning)
return NS_OK;
// If a favicon is in the failed cache, only load it during a forced reload.
PRBool previouslyFailed;
nsresult rv = IsFailedFavicon(aFaviconURI, &previouslyFailed);
NS_ENSURE_SUCCESS(rv, rv);
if (previouslyFailed) {
if (aForceReload)
RemoveFailedFavicon(aFaviconURI);
else
return NS_OK;
}
// 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.
rv = AsyncFetchAndSetIconForPage::start(
aFaviconURI, aPageURI, aForceReload ? FETCH_ALWAYS : FETCH_IF_MISSING,
mDBConn, aCallback
);
NS_ENSURE_SUCCESS(rv, rv);
// DB will be updated and observers notified when data has finished loading.
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::SetAndFetchFaviconForPage(nsIURI* aPageURI,
nsIURI* aFaviconURI,
PRBool aForceReload,
nsIFaviconDataCallback* aCallback)
{
return SetAndLoadFaviconForPage(aPageURI, aFaviconURI,
aForceReload, aCallback);
}
// nsFaviconService::SetFaviconData
//
// See the IDL for this function for lots of info. Note from there: we don't
// send out notifications.
NS_IMETHODIMP
nsFaviconService::SetFaviconData(nsIURI* aFaviconURI, const PRUint8* aData,
PRUint32 aDataLen, const nsACString& aMimeType,
PRTime aExpiration)
{
NS_ENSURE_ARG(aFaviconURI);
if (mFaviconsExpirationRunning)
return NS_OK;
nsresult rv;
PRUint32 dataLen = aDataLen;
const PRUint8* data = aData;
const nsACString* mimeType = &aMimeType;
nsCString newData, newMimeType;
// 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_ICON_FILESIZE(mOptimizedIconDimension)) {
rv = OptimizeFaviconImage(aData, aDataLen, aMimeType, newData, newMimeType);
if (NS_SUCCEEDED(rv) && newData.Length() < aDataLen) {
data = reinterpret_cast<PRUint8*>(const_cast<char*>(newData.get())),
dataLen = newData.Length();
mimeType = &newMimeType;
}
else if (aDataLen > MAX_FAVICON_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.
return NS_ERROR_FAILURE;
}
}
mozIStorageStatement* statement;
{
// this block forces the scoper to reset our statement: necessary for the
// next statement
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBGetIconInfo);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
PRBool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, rv);
if (hasResult) {
// Get id of the old entry and update it.
PRInt64 id;
rv = stmt->GetInt64(0, &id);
NS_ENSURE_SUCCESS(rv, rv);
statement = GetStatement(mDBUpdateIcon);
NS_ENSURE_STATE(statement);
rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("icon_id"), id);
NS_ENSURE_SUCCESS(rv, rv);
rv = statement->BindBlobByName(NS_LITERAL_CSTRING("data"), data, dataLen);
NS_ENSURE_SUCCESS(rv, rv);
rv = statement->BindUTF8StringByName(NS_LITERAL_CSTRING("mime_type"), *mimeType);
NS_ENSURE_SUCCESS(rv, rv);
rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("expiration"), aExpiration);
NS_ENSURE_SUCCESS(rv, rv);
}
else {
// Insert a new entry.
statement = GetStatement(mDBInsertIcon);
NS_ENSURE_STATE(statement);
rv = statement->BindNullByName(NS_LITERAL_CSTRING("icon_id"));
NS_ENSURE_SUCCESS(rv, rv);
rv = URIBinder::Bind(statement, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
rv = statement->BindBlobByName(NS_LITERAL_CSTRING("data"), data, dataLen);
NS_ENSURE_SUCCESS(rv, rv);
rv = statement->BindUTF8StringByName(NS_LITERAL_CSTRING("mime_type"), *mimeType);
NS_ENSURE_SUCCESS(rv, rv);
rv = statement->BindInt64ByName(NS_LITERAL_CSTRING("expiration"), aExpiration);
NS_ENSURE_SUCCESS(rv, rv);
}
}
mozStorageStatementScoper scoper(statement);
rv = statement->Execute();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::SetFaviconDataFromDataURL(nsIURI* aFaviconURI,
const nsAString& aDataURL,
PRTime aExpiration)
{
NS_ENSURE_ARG(aFaviconURI);
if (mFaviconsExpirationRunning)
return NS_OK;
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<nsIChannel> channel;
rv = protocolHandler->NewChannel(dataURI, getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, rv);
// blocking stream is OK for data URIs
nsCOMPtr<nsIInputStream> stream;
rv = channel->Open(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, rv);
PRUint32 available;
rv = stream->Available(&available);
NS_ENSURE_SUCCESS(rv, rv);
if (available == 0)
return NS_ERROR_FAILURE;
// read all the decoded data
PRUint8* buffer = static_cast<PRUint8*>
(nsMemory::Alloc(sizeof(PRUint8) * available));
if (!buffer)
return NS_ERROR_OUT_OF_MEMORY;
PRUint32 numRead;
rv = stream->Read(reinterpret_cast<char*>(buffer), available, &numRead);
if (NS_FAILED(rv) || numRead != available) {
nsMemory::Free(buffer);
return rv;
}
nsCAutoString mimeType;
rv = channel->GetContentType(mimeType);
NS_ENSURE_SUCCESS(rv, rv);
// SetFaviconData can now do the dirty work
rv = SetFaviconData(aFaviconURI, buffer, available, mimeType, aExpiration);
nsMemory::Free(buffer);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconData(nsIURI* aFaviconURI, nsACString& aMimeType,
PRUint32* aDataLen, PRUint8** aData)
{
NS_ENSURE_ARG(aFaviconURI);
NS_ENSURE_ARG_POINTER(aDataLen);
NS_ENSURE_ARG_POINTER(aData);
nsCOMPtr<nsIURI> defaultFaviconURI;
nsresult rv = GetDefaultFavicon(getter_AddRefs(defaultFaviconURI));
NS_ENSURE_SUCCESS(rv, rv);
PRBool isDefaultFavicon = PR_FALSE;
rv = defaultFaviconURI->Equals(aFaviconURI, &isDefaultFavicon);
NS_ENSURE_SUCCESS(rv, rv);
// If we're getting the default favicon, we need to handle it separately since
// it's not in the database.
if (isDefaultFavicon) {
nsCAutoString defaultData;
rv = GetDefaultFaviconData(defaultData);
NS_ENSURE_SUCCESS(rv, rv);
PRUint8* bytes = reinterpret_cast<PRUint8*>(ToNewCString(defaultData));
NS_ENSURE_STATE(bytes);
*aData = bytes;
*aDataLen = defaultData.Length();
aMimeType.AssignLiteral(DEFAULT_MIME_TYPE);
return NS_OK;
}
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBGetData);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("icon_url"), aFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
PRBool hasResult = PR_FALSE;
if (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
rv = stmt->GetUTF8String(1, aMimeType);
NS_ENSURE_SUCCESS(rv, rv);
return stmt->GetBlob(0, aDataLen, aData);
}
return NS_ERROR_NOT_AVAILABLE;
}
nsresult
nsFaviconService::GetDefaultFaviconData(nsCString& byteStr)
{
if (mDefaultFaviconData.IsEmpty()) {
nsCOMPtr<nsIURI> defaultFaviconURI;
nsresult rv = GetDefaultFavicon(getter_AddRefs(defaultFaviconURI));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIInputStream> istream;
rv = NS_OpenURI(getter_AddRefs(istream), defaultFaviconURI);
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_ConsumeStream(istream, PR_UINT32_MAX, mDefaultFaviconData);
NS_ENSURE_SUCCESS(rv, rv);
rv = istream->Close();
NS_ENSURE_SUCCESS(rv, rv);
if (mDefaultFaviconData.IsEmpty())
return NS_ERROR_UNEXPECTED;
}
byteStr.Assign(mDefaultFaviconData);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconDataAsDataURL(nsIURI* aFaviconURI,
nsAString& aDataURL)
{
NS_ENSURE_ARG(aFaviconURI);
PRUint8* data;
PRUint32 dataLen;
nsCAutoString mimeType;
nsresult rv = GetFaviconData(aFaviconURI, mimeType, &dataLen, &data);
NS_ENSURE_SUCCESS(rv, rv);
if (!data) {
aDataURL.SetIsVoid(PR_TRUE);
return NS_OK;
}
char* encoded = PL_Base64Encode(reinterpret_cast<const char*>(data),
dataLen, nsnull);
nsMemory::Free(data);
if (!encoded)
return NS_ERROR_OUT_OF_MEMORY;
aDataURL.AssignLiteral("data:");
AppendUTF8toUTF16(mimeType, aDataURL);
aDataURL.AppendLiteral(";base64,");
AppendUTF8toUTF16(encoded, aDataURL);
nsMemory::Free(encoded);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconForPage(nsIURI* aPageURI, nsIURI** _retval)
{
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG_POINTER(_retval);
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBGetURL);
nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aPageURI);
NS_ENSURE_SUCCESS(rv, rv);
PRBool hasResult;
if (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
nsCAutoString url;
rv = stmt->GetUTF8String(1, url);
NS_ENSURE_SUCCESS(rv, rv);
return NS_NewURI(_retval, url);
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconURLForPage(nsIURI *aPageURI,
nsIFaviconDataCallback* aCallback)
{
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aCallback);
nsresult rv = AsyncGetFaviconURLForPage::start(aPageURI, mDBConn, aCallback);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconDataForPage(nsIURI* aPageURI,
nsIFaviconDataCallback* aCallback)
{
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG(aCallback);
nsresult rv = AsyncGetFaviconDataForPage::start(aPageURI, mDBConn, aCallback);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::GetFaviconImageForPage(nsIURI* aPageURI, nsIURI** _retval)
{
NS_ENSURE_ARG(aPageURI);
NS_ENSURE_ARG_POINTER(_retval);
DECLARE_AND_ASSIGN_SCOPED_LAZY_STMT(stmt, mDBGetURL);
nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aPageURI);
NS_ENSURE_SUCCESS(rv, rv);
PRBool hasResult;
nsCOMPtr<nsIURI> faviconURI;
if (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
PRInt32 dataLen;
rv = stmt->GetInt32(2, &dataLen);
NS_ENSURE_SUCCESS(rv, rv);
if (dataLen > 0) {
// this page has a favicon entry with data
nsCAutoString favIconUri;
rv = stmt->GetUTF8String(1, favIconUri);
NS_ENSURE_SUCCESS(rv, rv);
return GetFaviconLinkForIconString(favIconUri, _retval);
}
}
// not found, use default
return GetDefaultFavicon(_retval);
}
nsresult
nsFaviconService::GetFaviconLinkForIcon(nsIURI* aFaviconURI,
nsIURI** aOutputURI)
{
NS_ENSURE_ARG(aFaviconURI);
NS_ENSURE_ARG_POINTER(aOutputURI);
nsCAutoString spec;
if (aFaviconURI) {
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
}
return GetFaviconLinkForIconString(spec, aOutputURI);
}
static PLDHashOperator
ExpireFailedFaviconsCallback(nsCStringHashKey::KeyType aKey,
PRUint32& aData,
void* userArg)
{
PRUint32* threshold = reinterpret_cast<PRUint32*>(userArg);
if (aData < *threshold)
return PL_DHASH_REMOVE;
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsFaviconService::AddFailedFavicon(nsIURI* aFaviconURI)
{
NS_ENSURE_ARG(aFaviconURI);
nsCAutoString spec;
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
if (! mFailedFavicons.Put(spec, mFailedFaviconSerial))
return NS_ERROR_OUT_OF_MEMORY;
mFailedFaviconSerial ++;
if (mFailedFavicons.Count() > MAX_FAVICON_CACHE_SIZE) {
// need to expire some entries, delete the FAVICON_CACHE_REDUCE_COUNT number
// of items that are the oldest
PRUint32 threshold = mFailedFaviconSerial -
MAX_FAVICON_CACHE_SIZE + FAVICON_CACHE_REDUCE_COUNT;
mFailedFavicons.Enumerate(ExpireFailedFaviconsCallback, &threshold);
}
return NS_OK;
}
NS_IMETHODIMP
nsFaviconService::RemoveFailedFavicon(nsIURI* aFaviconURI)
{
NS_ENSURE_ARG(aFaviconURI);
nsCAutoString 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, PRBool* _retval)
{
NS_ENSURE_ARG(aFaviconURI);
nsCAutoString spec;
nsresult rv = aFaviconURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
PRUint32 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);
}
nsCAutoString 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 PRUint8* aData, PRUint32 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,
getter_AddRefs(iconStream));
NS_ENSURE_SUCCESS(rv, rv);
// Read the stream into a new buffer.
rv = NS_ConsumeStream(iconStream, PR_UINT32_MAX, aNewData);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
nsFaviconService::FinalizeStatements() {
mShuttingDown = true;
mozIStorageStatement* stmts[] = {
mDBGetURL,
mDBGetData,
mDBGetIconInfo,
mDBInsertIcon,
mDBUpdateIcon,
mDBSetPageFavicon,
mDBRemoveOnDiskReferences,
mDBRemoveAllFavicons,
};
for (PRUint32 i = 0; i < NS_ARRAY_LENGTH(stmts); i++) {
nsresult rv = nsNavHistory::FinalizeStatement(stmts[i]);
NS_ENSURE_SUCCESS(rv, rv);
}
// Finalize the statementCache on the correct thread.
nsRefPtr<FinalizeStatementCacheProxy<mozIStorageStatement> > event =
new FinalizeStatementCacheProxy<mozIStorageStatement>(
mSyncStatements, NS_ISUPPORTS_CAST(nsIFaviconService*, this));
nsCOMPtr<nsIEventTarget> target = do_GetInterface(mDBConn);
NS_ENSURE_TRUE(target, NS_ERROR_OUT_OF_MEMORY);
nsresult rv = target->Dispatch(event, NS_DISPATCH_NORMAL);
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");
DECLARE_AND_ASSIGN_LAZY_STMT(stmt, mDBGetData);
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(
bool* aFaviconsExpirationRunning)
: mFaviconsExpirationRunning(aFaviconsExpirationRunning)
{
NS_ASSERTION(mFaviconsExpirationRunning, "Pointer to bool mFaviconsExpirationRunning can't be null");
}
NS_IMETHODIMP
ExpireFaviconsStatementCallbackNotifier::HandleCompletion(PRUint16 aReason)
{
*mFaviconsExpirationRunning = false;
// 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(nsnull,
NS_PLACES_FAVICONS_EXPIRED_TOPIC_ID,
nsnull);
}
return NS_OK;
}
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