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/*
* Copyright (C) 2006-2025 Apple 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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 "IconLoader.h"
#include "CachedRawResource.h"
#include "CachedResourceRequest.h"
#include "CachedResourceRequestInitiatorTypes.h"
#include "DocumentLoader.h"
#include "DocumentResourceLoader.h"
#include "FrameDestructionObserverInlines.h"
#include "FrameLoader.h"
#include "LocalFrameInlines.h"
#include "LocalFrameLoaderClient.h"
#include "Logging.h"
#include "ResourceRequest.h"
#include "SharedBuffer.h"
#include <wtf/text/CString.h>
namespace WebCore {
IconLoader::IconLoader(DocumentLoader& documentLoader, const URL& url)
: m_documentLoader(documentLoader)
, m_url(url)
{
}
IconLoader::~IconLoader()
{
stopLoading();
}
void IconLoader::startLoading()
{
if (m_resource)
return;
RefPtr frame = m_documentLoader->frame();
if (!frame)
return;
ResourceRequest resourceRequest = URL { m_url };
resourceRequest.setPriority(ResourceLoadPriority::Low);
#if !ERROR_DISABLED
// Copy this because we may want to access it after transferring the
// `resourceRequest` to the `request`. If we don't, then the LOG_ERROR
// below won't print a URL.
auto resourceRequestURL = resourceRequest.url();
#endif
CachedResourceRequest request(WTFMove(resourceRequest), ResourceLoaderOptions(
SendCallbackPolicy::SendCallbacks,
ContentSniffingPolicy::SniffContent,
DataBufferingPolicy::BufferData,
StoredCredentialsPolicy::DoNotUse,
ClientCredentialPolicy::CannotAskClientForCredentials,
FetchOptions::Credentials::Omit,
SecurityCheckPolicy::DoSecurityCheck,
FetchOptions::Mode::NoCors,
CertificateInfoPolicy::DoNotIncludeCertificateInfo,
ContentSecurityPolicyImposition::DoPolicyCheck,
DefersLoadingPolicy::AllowDefersLoading,
CachingPolicy::AllowCaching));
request.setInitiatorType(cachedResourceRequestInitiatorTypes().icon);
auto cachedResource = frame->protectedDocument()->protectedCachedResourceLoader()->requestIcon(WTFMove(request));
m_resource = cachedResource.value_or(nullptr);
if (CachedResourceHandle resource = m_resource)
resource->addClient(*this);
else
LOG_ERROR("Failed to start load for icon at url %s (error: %s)", resourceRequestURL.string().ascii().data(), cachedResource.error().localizedDescription().utf8().data());
}
void IconLoader::stopLoading()
{
if (CachedResourceHandle resource = std::exchange(m_resource, nullptr))
resource->removeClient(*this);
}
void IconLoader::notifyFinished(CachedResource& resource, const NetworkLoadMetrics&, LoadWillContinueInAnotherProcess)
{
ASSERT_UNUSED(resource, &resource == m_resource);
// If we got a status code indicating an invalid response, then lets
// ignore the data and not try to decode the error page as an icon.
RefPtr data = m_resource->resourceBuffer();
int status = m_resource->response().httpStatusCode();
if (status && (status < 200 || status > 299))
data = nullptr;
constexpr uint8_t pdfMagicNumber[] = { '%', 'P', 'D', 'F' };
if (data && data->startsWith(unsafeMakeSpan(pdfMagicNumber, std::size(pdfMagicNumber)))) {
LOG(IconDatabase, "IconLoader::finishLoading() - Ignoring icon at %s because it appears to be a PDF", m_resource->url().string().ascii().data());
data = nullptr;
}
LOG(IconDatabase, "IconLoader::finishLoading() - Committing iconURL %s to database", m_resource->url().string().ascii().data());
// DocumentLoader::finishedLoadingIcon destroys this IconLoader as it finishes. This will automatically
// trigger IconLoader::stopLoading() during destruction, so we should just return here.
Ref { m_documentLoader.get() }->finishedLoadingIcon(*this, data.get());
}
}
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