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/*
* Copyright (C) 2013 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.
*
* 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 "HTMLResourcePreloader.h"
#include "CachedResourceLoader.h"
#include "Document.h"
#include "MediaList.h"
#include "MediaQueryEvaluator.h"
#include "RenderView.h"
namespace WebCore {
URL PreloadRequest::completeURL(Document& document)
{
return document.completeURL(m_resourceURL, m_baseURL.isEmpty() ? document.baseURL() : m_baseURL);
}
CachedResourceRequest PreloadRequest::resourceRequest(Document& document)
{
ASSERT(isMainThread());
bool skipContentSecurityPolicyCheck = false;
if (m_resourceType == CachedResource::Type::Script)
skipContentSecurityPolicyCheck = document.contentSecurityPolicy()->allowScriptWithNonce(m_nonceAttribute);
else if (m_resourceType == CachedResource::Type::CSSStyleSheet)
skipContentSecurityPolicyCheck = document.contentSecurityPolicy()->allowStyleWithNonce(m_nonceAttribute);
ResourceLoaderOptions options = CachedResourceLoader::defaultCachedResourceOptions();
if (skipContentSecurityPolicyCheck)
options.contentSecurityPolicyImposition = ContentSecurityPolicyImposition::SkipPolicyCheck;
CachedResourceRequest request { completeURL(document), options };
request.setInitiator(m_initiator);
String crossOriginMode = m_crossOriginMode;
if (m_moduleScript == ModuleScript::Yes) {
if (crossOriginMode.isNull())
crossOriginMode = ASCIILiteral("omit");
}
request.setAsPotentiallyCrossOrigin(crossOriginMode, document);
return request;
}
void HTMLResourcePreloader::preload(PreloadRequestStream requests)
{
for (auto& request : requests)
preload(WTFMove(request));
}
static bool mediaAttributeMatches(Document& document, const RenderStyle* renderStyle, const String& attributeValue)
{
auto mediaQueries = MediaQuerySet::create(attributeValue);
return MediaQueryEvaluator { "screen", document, renderStyle }.evaluate(mediaQueries.get());
}
void HTMLResourcePreloader::preload(std::unique_ptr<PreloadRequest> preload)
{
ASSERT(m_document.frame());
ASSERT(m_document.renderView());
if (!preload->media().isEmpty() && !mediaAttributeMatches(m_document, &m_document.renderView()->style(), preload->media()))
return;
m_document.cachedResourceLoader().preload(preload->resourceType(), preload->resourceRequest(m_document));
}
}
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