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/*
* Copyright (C) 2006 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 "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "CachedResourceRequestInitiators.h"
#include "Document.h"
#include "DocumentLoader.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.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;
auto* frame = m_documentLoader.frame();
if (!frame)
return;
ResourceRequest resourceRequest = 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(SendCallbacks, SniffContent, BufferData, DoNotAllowStoredCredentials, ClientCredentialPolicy::CannotAskClientForCredentials, FetchOptions::Credentials::Omit, DoSecurityCheck, FetchOptions::Mode::NoCors, DoNotIncludeCertificateInfo, ContentSecurityPolicyImposition::DoPolicyCheck, DefersLoadingPolicy::AllowDefersLoading, CachingPolicy::AllowCaching));
request.setInitiator(cachedResourceRequestInitiators().icon);
m_resource = frame->document()->cachedResourceLoader().requestIcon(WTFMove(request));
if (m_resource)
m_resource->addClient(*this);
else
LOG_ERROR("Failed to start load for icon at url %s", resourceRequestURL.string().ascii().data());
}
void IconLoader::stopLoading()
{
if (m_resource) {
m_resource->removeClient(*this);
m_resource = nullptr;
}
}
void IconLoader::notifyFinished(CachedResource& resource)
{
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.
auto* data = m_resource->resourceBuffer();
int status = m_resource->response().httpStatusCode();
if (status && (status < 200 || status > 299))
data = nullptr;
static const char pdfMagicNumber[] = "%PDF";
static unsigned pdfMagicNumberLength = sizeof(pdfMagicNumber) - 1;
if (data && data->size() >= pdfMagicNumberLength && !memcmp(data->data(), pdfMagicNumber, pdfMagicNumberLength)) {
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.
m_documentLoader.finishedLoadingIcon(*this, data);
}
}
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