HTMLResourcePreloader.cpp [plain text]
#include "config.h"
#include "HTMLResourcePreloader.h"
#include "CachedResourceLoader.h"
#include "CrossOriginAccessControl.h"
#include "Document.h"
#include "ScriptElementCachedScriptFetcher.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;
String crossOriginMode = m_crossOriginMode;
if (m_moduleScript == ModuleScript::Yes) {
if (crossOriginMode.isNull())
crossOriginMode = ScriptElementCachedScriptFetcher::defaultCrossOriginModeForModule;
}
if (m_resourceType == CachedResource::Type::Script || m_resourceType == CachedResource::Type::ImageResource)
options.referrerPolicy = m_referrerPolicy;
auto request = createPotentialAccessControlRequest(completeURL(document), WTFMove(options), document, crossOriginMode);
request.setInitiator(m_initiator);
if (m_scriptIsAsync && m_resourceType == CachedResource::Type::Script && m_moduleScript == ModuleScript::No)
request.setPriority(ResourceLoadPriority::Low);
return request;
}
void HTMLResourcePreloader::preload(PreloadRequestStream requests)
{
for (auto& request : requests)
preload(WTFMove(request));
}
void HTMLResourcePreloader::preload(std::unique_ptr<PreloadRequest> preload)
{
ASSERT(m_document.frame());
ASSERT(m_document.renderView());
if (!preload->media().isEmpty() && !MediaQueryEvaluator::mediaAttributeMatches(m_document, preload->media()))
return;
m_document.cachedResourceLoader().preload(preload->resourceType(), preload->resourceRequest(m_document));
}
}