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/*
* Copyright (C) 2014 Igalia S.L
* Copyright (C) 2016-2017 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. 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 INC. 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 "MediaResourceLoader.h"
#if ENABLE(VIDEO)
#include "CachedRawResource.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "CrossOriginAccessControl.h"
#include "Document.h"
#include "HTMLMediaElement.h"
#include "InspectorInstrumentation.h"
#include "SecurityOrigin.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
MediaResourceLoader::MediaResourceLoader(Document& document, HTMLMediaElement& mediaElement, const String& crossOriginMode)
: ContextDestructionObserver(&document)
, m_document(makeWeakPtr(document))
, m_mediaElement(makeWeakPtr(mediaElement))
, m_crossOriginMode(crossOriginMode)
{
}
MediaResourceLoader::~MediaResourceLoader()
{
ASSERT(m_resources.isEmpty());
}
void MediaResourceLoader::contextDestroyed()
{
ContextDestructionObserver::contextDestroyed();
m_document = nullptr;
m_mediaElement = nullptr;
}
RefPtr<PlatformMediaResource> MediaResourceLoader::requestResource(ResourceRequest&& request, LoadOptions options)
{
if (!m_document)
return nullptr;
DataBufferingPolicy bufferingPolicy = options & LoadOption::BufferData ? DataBufferingPolicy::BufferData : DataBufferingPolicy::DoNotBufferData;
auto cachingPolicy = options & LoadOption::DisallowCaching ? CachingPolicy::DisallowCaching : CachingPolicy::AllowCaching;
request.setRequester(ResourceRequest::Requester::Media);
if (m_mediaElement)
request.setInspectorInitiatorNodeIdentifier(InspectorInstrumentation::identifierForNode(*m_mediaElement));
#if HAVE(AVFOUNDATION_LOADER_DELEGATE) && PLATFORM(MAC)
// FIXME: Workaround for <rdar://problem/26071607>. We are not able to do CORS checking on 304 responses because they are usually missing the headers we need.
if (!m_crossOriginMode.isNull())
request.makeUnconditional();
#endif
ContentSecurityPolicyImposition contentSecurityPolicyImposition = m_mediaElement && m_mediaElement->isInUserAgentShadowTree() ? ContentSecurityPolicyImposition::SkipPolicyCheck : ContentSecurityPolicyImposition::DoPolicyCheck;
ResourceLoaderOptions loaderOptions {
SendCallbackPolicy::SendCallbacks,
ContentSniffingPolicy::DoNotSniffContent,
bufferingPolicy,
StoredCredentialsPolicy::Use,
ClientCredentialPolicy::MayAskClientForCredentials,
FetchOptions::Credentials::Include,
SecurityCheckPolicy::DoSecurityCheck,
FetchOptions::Mode::NoCors,
CertificateInfoPolicy::DoNotIncludeCertificateInfo,
contentSecurityPolicyImposition,
DefersLoadingPolicy::AllowDefersLoading,
cachingPolicy };
loaderOptions.destination = m_mediaElement && !m_mediaElement->isVideo() ? FetchOptions::Destination::Audio : FetchOptions::Destination::Video;
auto cachedRequest = createPotentialAccessControlRequest(WTFMove(request), WTFMove(loaderOptions), *m_document, m_crossOriginMode);
if (m_mediaElement)
cachedRequest.setInitiator(*m_mediaElement);
auto resource = m_document->cachedResourceLoader().requestMedia(WTFMove(cachedRequest)).value_or(nullptr);
if (!resource)
return nullptr;
Ref<MediaResource> mediaResource = MediaResource::create(*this, resource);
m_resources.add(mediaResource.ptr());
return mediaResource;
}
void MediaResourceLoader::removeResource(MediaResource& mediaResource)
{
ASSERT(m_resources.contains(&mediaResource));
m_resources.remove(&mediaResource);
}
void MediaResourceLoader::addResponseForTesting(const ResourceResponse& response)
{
const auto maximumResponsesForTesting = 5;
if (m_responsesForTesting.size() > maximumResponsesForTesting)
return;
m_responsesForTesting.append(response);
}
Ref<MediaResource> MediaResource::create(MediaResourceLoader& loader, CachedResourceHandle<CachedRawResource> resource)
{
return adoptRef(*new MediaResource(loader, resource));
}
MediaResource::MediaResource(MediaResourceLoader& loader, CachedResourceHandle<CachedRawResource> resource)
: m_loader(loader)
, m_resource(resource)
{
ASSERT(resource);
resource->addClient(*this);
}
MediaResource::~MediaResource()
{
stop();
m_loader->removeResource(*this);
}
void MediaResource::stop()
{
if (!m_resource)
return;
m_resource->removeClient(*this);
m_resource = nullptr;
}
void MediaResource::responseReceived(CachedResource& resource, const ResourceResponse& response, CompletionHandler<void()>&& completionHandler)
{
ASSERT_UNUSED(resource, &resource == m_resource);
CompletionHandlerCallingScope completionHandlerCaller(WTFMove(completionHandler));
if (!m_loader->document())
return;
RefPtr<MediaResource> protectedThis(this);
if (m_resource->resourceError().isAccessControl()) {
static NeverDestroyed<const String> consoleMessage("Cross-origin media resource load denied by Cross-Origin Resource Sharing policy.");
m_loader->document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, consoleMessage.get());
m_didPassAccessControlCheck = false;
if (m_client)
m_client->accessControlCheckFailed(*this, ResourceError(errorDomainWebKitInternal, 0, response.url(), consoleMessage.get()));
stop();
return;
}
m_didPassAccessControlCheck = m_resource->options().mode == FetchOptions::Mode::Cors;
if (m_client)
m_client->responseReceived(*this, response, [this, protectedThis = makeRef(*this), completionHandler = completionHandlerCaller.release()] (auto shouldContinue) mutable {
if (completionHandler)
completionHandler();
if (shouldContinue == PolicyChecker::ShouldContinue::No)
stop();
});
m_loader->addResponseForTesting(response);
}
bool MediaResource::shouldCacheResponse(CachedResource& resource, const ResourceResponse& response)
{
ASSERT_UNUSED(resource, &resource == m_resource);
RefPtr<MediaResource> protectedThis(this);
if (m_client)
return m_client->shouldCacheResponse(*this, response);
return true;
}
void MediaResource::redirectReceived(CachedResource& resource, ResourceRequest&& request, const ResourceResponse& response, CompletionHandler<void(ResourceRequest&&)>&& completionHandler)
{
ASSERT_UNUSED(resource, &resource == m_resource);
RefPtr<MediaResource> protectedThis(this);
if (m_client)
m_client->redirectReceived(*this, WTFMove(request), response, WTFMove(completionHandler));
else
completionHandler(WTFMove(request));
}
void MediaResource::dataSent(CachedResource& resource, unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
{
ASSERT_UNUSED(resource, &resource == m_resource);
RefPtr<MediaResource> protectedThis(this);
if (m_client)
m_client->dataSent(*this, bytesSent, totalBytesToBeSent);
}
void MediaResource::dataReceived(CachedResource& resource, const char* data, int dataLength)
{
ASSERT_UNUSED(resource, &resource == m_resource);
RefPtr<MediaResource> protectedThis(this);
if (m_client)
m_client->dataReceived(*this, data, dataLength);
}
void MediaResource::notifyFinished(CachedResource& resource)
{
ASSERT_UNUSED(resource, &resource == m_resource);
RefPtr<MediaResource> protectedThis(this);
if (m_client) {
if (m_resource->loadFailedOrCanceled())
m_client->loadFailed(*this, m_resource->resourceError());
else
m_client->loadFinished(*this);
}
stop();
}
} // namespace WebCore
#endif