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/*
* Copyright (C) 2006-2011, 2015 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2008 Alp Toker <alp@atoker.com>
* Copyright (C) Research In Motion Limited 2009. All rights reserved.
* Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "IconController.h"
#include "Document.h"
#include "DocumentLoader.h"
#include "ElementChildIterator.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HTMLHeadElement.h"
#include "HTMLLinkElement.h"
#include "IconDatabase.h"
#include "IconLoader.h"
#include "Logging.h"
#include "MainFrame.h"
#include "Page.h"
#include "Settings.h"
#include <wtf/text/CString.h>
namespace WebCore {
IconController::IconController(Frame& frame)
: m_frame(frame)
{
}
IconController::~IconController()
{
}
static URL iconFromLinkElements(Frame& frame)
{
// This function returns the first icon with a mime type.
// If no icon with mime type exists, the last icon is returned.
// It may make more sense to always return the last icon,
// but this implementation is consistent with previous behavior.
URL result;
auto* document = frame.document();
if (!document)
return result;
auto* head = document->head();
if (!head)
return result;
for (auto& linkElement : childrenOfType<HTMLLinkElement>(*head)) {
if (!(linkElement.iconType() & Favicon))
continue;
if (linkElement.href().isEmpty())
continue;
result = linkElement.href();
if (!linkElement.type().isEmpty())
break;
}
return result;
}
URL IconController::url()
{
if (!m_frame.isMainFrame())
return URL();
auto icon = iconFromLinkElements(m_frame);
if (!icon.isEmpty())
return icon;
icon = m_frame.document()->completeURL(ASCIILiteral("/favicon.ico"));
if (icon.protocolIsInHTTPFamily()) {
// FIXME: Not sure we need to remove credentials like this.
// However this preserves behavior this code path has historically had.
icon.setUser(String());
icon.setPass(String());
return icon;
}
return URL();
}
void IconController::commitToDatabase(const URL& icon)
{
LOG(IconDatabase, "Committing iconURL %s to database for pageURLs %s and %s", icon.string().ascii().data(), m_frame.document()->url().string().ascii().data(), m_frame.loader().initialRequest().url().string().ascii().data());
iconDatabase().setIconURLForPageURL(icon.string(), m_frame.document()->url().string());
iconDatabase().setIconURLForPageURL(icon.string(), m_frame.loader().initialRequest().url().string());
}
void IconController::startLoader()
{
// FIXME: We kick off the icon loader when the frame is done receiving its main resource.
// But we should instead do it when we're done parsing the head element.
if (!m_frame.isMainFrame())
return;
if (!iconDatabase().isEnabled())
return;
ASSERT(!m_frame.tree().parent());
if (!documentCanHaveIcon(m_frame.document()->url()))
return;
URL iconURL = url();
if (iconURL.isEmpty())
return;
// People who want to avoid loading images generally want to avoid loading all images, unless an exception has been made for site icons.
// Now that we've accounted for URL mapping, avoid starting the network load if images aren't set to display automatically.
if (!m_frame.settings().loadsImagesAutomatically() && !m_frame.settings().loadsSiteIconsIgnoringImageLoadingSetting())
return;
// If we're reloading the page, always start the icon load now.
// FIXME: How can this condition ever be true?
if (m_frame.loader().loadType() == FrameLoadType::Reload && m_frame.loader().loadType() == FrameLoadType::ReloadFromOrigin) {
continueLoadWithDecision(IconLoadYes);
return;
}
if (iconDatabase().supportsAsynchronousMode()) {
// FIXME (<rdar://problem/9168605>) - We should support in-memory-only private browsing icons in asynchronous icon database mode.
if (m_frame.page() && m_frame.page()->usesEphemeralSession())
return;
m_frame.loader().documentLoader()->getIconLoadDecisionForIconURL(iconURL.string());
// Commit the icon url mapping to the database just in case we don't end up loading later.
commitToDatabase(iconURL);
return;
}
IconLoadDecision decision = iconDatabase().synchronousLoadDecisionForIconURL(iconURL.string(), m_frame.loader().documentLoader());
if (decision == IconLoadUnknown) {
// In this case, we may end up loading the icon later, but we still want to commit the icon url mapping to the database
// just in case we don't end up loading later - if we commit the mapping a second time after the load, that's no big deal
// We also tell the client to register for the notification that the icon is received now so it isn't missed in case the
// icon is later read in from disk
LOG(IconDatabase, "IconController %p might load icon %s later", this, iconURL.string().utf8().data());
m_waitingForLoadDecision = true;
m_frame.loader().client().registerForIconNotification();
commitToDatabase(iconURL);
return;
}
continueLoadWithDecision(decision);
}
void IconController::stopLoader()
{
if (m_iconLoader)
m_iconLoader->stopLoading();
}
// Callback for the old-style synchronous IconDatabase interface.
void IconController::loadDecisionReceived(IconLoadDecision iconLoadDecision)
{
if (!m_waitingForLoadDecision)
return;
LOG(IconDatabase, "IconController %p was told a load decision is available for its icon", this);
continueLoadWithDecision(iconLoadDecision);
m_waitingForLoadDecision = false;
}
void IconController::continueLoadWithDecision(IconLoadDecision iconLoadDecision)
{
ASSERT(iconLoadDecision != IconLoadUnknown);
if (iconLoadDecision == IconLoadNo) {
URL iconURL = url();
if (iconURL.isEmpty())
return;
LOG(IconDatabase, "IconController::startLoader() - Told not to load this icon, committing iconURL %s to database for pageURL mapping", iconURL.string().utf8().data());
commitToDatabase(iconURL);
if (iconDatabase().supportsAsynchronousMode()) {
m_frame.loader().documentLoader()->getIconDataForIconURL(iconURL.string());
return;
}
// We were told not to load this icon - that means this icon is already known by the database
// If the icon data hasn't been read in from disk yet, kick off the read of the icon from the database to make sure someone
// has done it. This is after registering for the notification so the WebView can call the appropriate delegate method.
// Otherwise if the icon data *is* available, notify the delegate
if (!iconDatabase().synchronousIconDataKnownForIconURL(iconURL.string())) {
LOG(IconDatabase, "Told not to load icon %s but icon data is not yet available - registering for notification and requesting load from disk", iconURL.string().ascii().data());
m_frame.loader().client().registerForIconNotification();
iconDatabase().synchronousIconForPageURL(m_frame.document()->url().string(), IntSize(0, 0));
iconDatabase().synchronousIconForPageURL(m_frame.loader().initialRequest().url().string(), IntSize(0, 0));
} else
m_frame.loader().client().dispatchDidReceiveIcon();
return;
}
if (!m_iconLoader)
m_iconLoader = std::make_unique<IconLoader>(m_frame);
m_iconLoader->startLoading();
}
}
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