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/*
* Copyright (C) 2015 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.
*/
#ifndef NetworkCacheSpeculativeLoadManager_h
#define NetworkCacheSpeculativeLoadManager_h
#if ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION)
#include "NetworkCache.h"
#include "NetworkCacheStorage.h"
#include <WebCore/ResourceRequest.h>
#include <wtf/CheckedPtr.h>
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebKit {
namespace NetworkCache {
class SpeculativeLoadManager;
}
}
namespace WebCore {
enum class AdvancedPrivacyProtections : uint16_t;
}
namespace WebKit {
namespace NetworkCache {
class Entry;
class SpeculativeLoad;
class SubresourceInfo;
class SubresourcesEntry;
class SpeculativeLoadManager final : public CanMakeWeakPtr<SpeculativeLoadManager>, public CanMakeCheckedPtr<SpeculativeLoadManager> {
WTF_MAKE_TZONE_ALLOCATED(SpeculativeLoadManager);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(SpeculativeLoadManager);
public:
explicit SpeculativeLoadManager(Cache&, Storage&);
~SpeculativeLoadManager();
void registerLoad(GlobalFrameID, const WebCore::ResourceRequest&, const Key& resourceKey, std::optional<NavigatingToAppBoundDomain>, bool allowPrivacyProxy, OptionSet<WebCore::AdvancedPrivacyProtections>);
void registerMainResourceLoadResponse(const GlobalFrameID&, const WebCore::ResourceRequest&, const WebCore::ResourceResponse&);
typedef Function<void (std::unique_ptr<Entry>)> RetrieveCompletionHandler;
bool canRetrieve(const Key& storageKey, const WebCore::ResourceRequest&, const GlobalFrameID&) const;
void retrieve(const Key& storageKey, RetrieveCompletionHandler&&);
private:
class PreloadedEntry;
static bool shouldRegisterLoad(const WebCore::ResourceRequest&);
void addPreloadedEntry(std::unique_ptr<Entry>, const GlobalFrameID&, std::optional<WebCore::ResourceRequest>&& revalidationRequest = std::nullopt);
void preloadEntry(const Key&, const SubresourceInfo&, const GlobalFrameID&, std::optional<NavigatingToAppBoundDomain>, bool allowPrivacyProxy, OptionSet<WebCore::AdvancedPrivacyProtections>);
void retrieveEntryFromStorage(const SubresourceInfo&, RetrieveCompletionHandler&&);
void revalidateSubresource(const SubresourceInfo&, std::unique_ptr<Entry>, const GlobalFrameID&, std::optional<NavigatingToAppBoundDomain>, bool allowPrivacyProxy, OptionSet<WebCore::AdvancedPrivacyProtections>);
void preconnectForSubresource(const SubresourceInfo&, Entry*, const GlobalFrameID&, std::optional<NavigatingToAppBoundDomain>);
bool satisfyPendingRequests(const Key&, Entry*);
void retrieveSubresourcesEntry(const Key& storageKey, WTF::Function<void (std::unique_ptr<SubresourcesEntry>)>&&);
void startSpeculativeRevalidation(const GlobalFrameID&, SubresourcesEntry&, bool, std::optional<NavigatingToAppBoundDomain>, bool allowPrivacyProxy, OptionSet<WebCore::AdvancedPrivacyProtections>);
static bool canUsePreloadedEntry(const PreloadedEntry&, const WebCore::ResourceRequest& actualRequest);
static bool canUsePendingPreload(const SpeculativeLoad&, const WebCore::ResourceRequest& actualRequest);
Ref<Storage> protectedStorage() const;
WeakRef<Cache> m_cache;
ThreadSafeWeakPtr<Storage> m_storage; // Not expected to be null.
class PendingFrameLoad;
HashMap<GlobalFrameID, RefPtr<PendingFrameLoad>> m_pendingFrameLoads;
HashMap<Key, std::unique_ptr<SpeculativeLoad>> m_pendingPreloads;
HashMap<Key, std::unique_ptr<Vector<RetrieveCompletionHandler>>> m_pendingRetrieveRequests;
HashMap<Key, std::unique_ptr<PreloadedEntry>> m_preloadedEntries;
class ExpiringEntry;
HashMap<Key, std::unique_ptr<ExpiringEntry>> m_notPreloadedEntries; // For logging.
};
} // namespace NetworkCache
} // namespace WebKit
#endif // ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION)
#endif // NetworkCacheSpeculativeLoadManager_h
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