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/*
* Copyright (C) 2012 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 "WebResourceLoadScheduler.h"
#include "Logging.h"
#include "NetworkConnectionToWebProcessMessages.h"
#include "NetworkProcessConnection.h"
#include "NetworkResourceLoadParameters.h"
#include "WebCoreArgumentCoders.h"
#include "WebProcess.h"
#include "WebResourceLoader.h"
#include <WebCore/DocumentLoader.h>
#include <WebCore/Frame.h>
#include <WebCore/FrameLoader.h>
#include <WebCore/NetscapePlugInStreamLoader.h>
#include <WebCore/ResourceBuffer.h>
#include <WebCore/ResourceLoader.h>
#include <WebCore/Settings.h>
#include <WebCore/SubresourceLoader.h>
#include <wtf/text/CString.h>
#if ENABLE(NETWORK_PROCESS)
using namespace WebCore;
namespace WebKit {
WebResourceLoadScheduler::WebResourceLoadScheduler()
: m_suspendPendingRequestsCount(0)
{
}
WebResourceLoadScheduler::~WebResourceLoadScheduler()
{
}
PassRefPtr<SubresourceLoader> WebResourceLoadScheduler::scheduleSubresourceLoad(Frame* frame, CachedResource* resource, const ResourceRequest& request, ResourceLoadPriority priority, const ResourceLoaderOptions& options)
{
RefPtr<SubresourceLoader> loader = SubresourceLoader::create(frame, resource, request, options);
if (loader)
scheduleLoad(loader.get(), priority);
return loader.release();
}
PassRefPtr<NetscapePlugInStreamLoader> WebResourceLoadScheduler::schedulePluginStreamLoad(Frame* frame, NetscapePlugInStreamLoaderClient* client, const ResourceRequest& request)
{
RefPtr<NetscapePlugInStreamLoader> loader = NetscapePlugInStreamLoader::create(frame, client, request);
if (loader)
scheduleLoad(loader.get(), ResourceLoadPriorityLow);
return loader.release();
}
void WebResourceLoadScheduler::scheduleLoad(ResourceLoader* resourceLoader, ResourceLoadPriority priority)
{
LOG(NetworkScheduling, "(WebProcess) WebResourceLoadScheduler::scheduleLoad, url '%s' priority %i", resourceLoader->url().string().utf8().data(), priority);
ASSERT(resourceLoader);
ASSERT(priority != ResourceLoadPriorityUnresolved);
priority = ResourceLoadPriorityHighest;
// If there's a web archive resource for this URL, we don't need to schedule the load since it will never touch the network.
if (resourceLoader->documentLoader()->archiveResourceForURL(resourceLoader->request().url())) {
startResourceLoader(resourceLoader);
return;
}
ResourceLoadIdentifier identifier;
ResourceRequest request = resourceLoader->request();
// We want the network process involved in scheduling data URL loads but it doesn't need to know the full (often long) URL.
if (request.url().protocolIsData()) {
DEFINE_STATIC_LOCAL(KURL, dataURL, (KURL(), "data:"));
request.setURL(dataURL);
}
// FIXME (NetworkProcess): When the ResourceLoader asks its FrameLoaderClient about using
// credential storage it passes along its identifier.
// But at this point it doesn't have the correct identifier yet.
// In practice clients we know about don't care about the identifier, but this is another reason
// we need to make sure ResourceLoaders get correct identifiers right off the bat.
StoredCredentials allowStoredCredentials = resourceLoader->shouldUseCredentialStorage() ? AllowStoredCredentials : DoNotAllowStoredCredentials;
NetworkResourceLoadParameters loadParameters(request, priority, resourceLoader->shouldSniffContent() ? SniffContent : DoNotSniffContent, allowStoredCredentials);
if (!WebProcess::shared().networkConnection()->connection()->sendSync(Messages::NetworkConnectionToWebProcess::ScheduleResourceLoad(loadParameters), Messages::NetworkConnectionToWebProcess::ScheduleResourceLoad::Reply(identifier), 0)) {
// FIXME (NetworkProcess): What should we do if this fails?
ASSERT_NOT_REACHED();
}
resourceLoader->setIdentifier(identifier);
m_webResourceLoaders.set(identifier, WebResourceLoader::create(resourceLoader));
notifyDidScheduleResourceRequest(resourceLoader);
}
void WebResourceLoadScheduler::addMainResourceLoad(ResourceLoader* resourceLoader)
{
LOG(NetworkScheduling, "(WebProcess) WebResourceLoadScheduler::addMainResourceLoad, url '%s'", resourceLoader->url().string().utf8().data());
ResourceLoadIdentifier identifier;
if (!WebProcess::shared().networkConnection()->connection()->sendSync(Messages::NetworkConnectionToWebProcess::AddLoadInProgress(resourceLoader->url()), Messages::NetworkConnectionToWebProcess::AddLoadInProgress::Reply(identifier), 0)) {
// FIXME (NetworkProcess): What should we do if this fails?
ASSERT_NOT_REACHED();
}
resourceLoader->setIdentifier(identifier);
m_coreResourceLoaders.set(identifier, resourceLoader);
}
void WebResourceLoadScheduler::remove(ResourceLoader* resourceLoader)
{
ASSERT(resourceLoader);
LOG(NetworkScheduling, "(WebProcess) WebResourceLoadScheduler::remove, url '%s'", resourceLoader->url().string().utf8().data());
// FIXME (NetworkProcess): It's possible for a resourceLoader to be removed before it ever started,
// meaning before it even has an identifier.
// We should make this not be possible.
// The ResourceLoader code path should always for an identifier to ResourceLoaders.
ResourceLoadIdentifier identifier = resourceLoader->identifier();
if (!identifier) {
LOG_ERROR("WebResourceLoadScheduler removing a ResourceLoader that has no identifier.");
return;
}
// FIXME (NetworkProcess): We should only tell the NetworkProcess to remove load identifiers for ResourceLoaders that were never started.
// If a resource load was actually started within the NetworkProcess then the NetworkProcess handles clearing out the identifier.
WebProcess::shared().networkConnection()->connection()->send(Messages::NetworkConnectionToWebProcess::RemoveLoadIdentifier(identifier), 0);
ASSERT(m_webResourceLoaders.contains(identifier) || m_coreResourceLoaders.contains(identifier));
m_webResourceLoaders.remove(identifier);
m_coreResourceLoaders.remove(identifier);
}
void WebResourceLoadScheduler::crossOriginRedirectReceived(ResourceLoader*, const KURL&)
{
// We handle cross origin redirects entirely within the NetworkProcess.
// We override this call in the WebProcess to make it a no-op.
}
void WebResourceLoadScheduler::servePendingRequests(ResourceLoadPriority minimumPriority)
{
LOG(NetworkScheduling, "(WebProcess) WebResourceLoadScheduler::servePendingRequests");
// If this WebProcess has its own request suspension count then we don't even
// have to bother messaging the NetworkProcess.
if (m_suspendPendingRequestsCount)
return;
WebProcess::shared().networkConnection()->connection()->send(Messages::NetworkConnectionToWebProcess::ServePendingRequests(minimumPriority), 0);
}
void WebResourceLoadScheduler::suspendPendingRequests()
{
WebProcess::shared().networkConnection()->connection()->sendSync(Messages::NetworkConnectionToWebProcess::SuspendPendingRequests(), Messages::NetworkConnectionToWebProcess::SuspendPendingRequests::Reply(), 0);
++m_suspendPendingRequestsCount;
}
void WebResourceLoadScheduler::resumePendingRequests()
{
WebProcess::shared().networkConnection()->connection()->sendSync(Messages::NetworkConnectionToWebProcess::ResumePendingRequests(), Messages::NetworkConnectionToWebProcess::ResumePendingRequests::Reply(), 0);
ASSERT(m_suspendPendingRequestsCount);
--m_suspendPendingRequestsCount;
}
void WebResourceLoadScheduler::setSerialLoadingEnabled(bool enabled)
{
WebProcess::shared().networkConnection()->connection()->sendSync(Messages::NetworkConnectionToWebProcess::SetSerialLoadingEnabled(enabled), Messages::NetworkConnectionToWebProcess::SetSerialLoadingEnabled::Reply(), 0);
}
} // namespace WebKit
#endif // ENABLE(NETWORK_PROCESS)
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