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/*
* Copyright (C) 2024 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.
*/
#pragma once
#if ENABLE(CONTENT_EXTENSIONS)
#include "ContentExtensionsBackend.h"
#include <wtf/CompletionHandler.h>
#include <wtf/Lock.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/OptionSet.h>
#include <wtf/WorkQueue.h>
namespace WebCore {
class LocalFrame;
class ResourceMonitor;
enum class ResourceMonitorEligibility : uint8_t { Unsure, NotEligible, Eligible };
class ResourceMonitorChecker final {
friend MainThreadNeverDestroyed<ResourceMonitorChecker>;
public:
using Eligibility = ResourceMonitorEligibility;
WEBCORE_EXPORT static ResourceMonitorChecker& singleton();
~ResourceMonitorChecker();
void registerResourceMonitor(ResourceMonitor&);
void unregisterResourceMonitor(ResourceMonitor&);
void checkEligibility(ContentExtensions::ResourceLoadInfo&&, CompletionHandler<void(Eligibility)>&&);
WEBCORE_EXPORT void setContentRuleList(ContentExtensions::ContentExtensionsBackend&&);
WEBCORE_EXPORT void setNetworkUsageThreshold(size_t threshold, double randomness = defaultNetworkUsageThresholdRandomness);
WEBCORE_EXPORT size_t networkUsageThreshold() const;
WEBCORE_EXPORT size_t networkUsageThresholdWithNoise() const;
static constexpr Seconds ruleListPreparationTimeout = 10_s;
static constexpr auto defaultEligibility = ResourceMonitorEligibility::NotEligible;
WEBCORE_EXPORT static constexpr size_t defaultNetworkUsageThreshold = 4 * MB;
WEBCORE_EXPORT static constexpr double defaultNetworkUsageThresholdRandomness = 0.0325;
private:
ResourceMonitorChecker();
Eligibility checkEligibility(const ContentExtensions::ResourceLoadInfo&);
void finishPendingQueries(Function<Eligibility(const ContentExtensions::ResourceLoadInfo&)> checker);
Ref<WorkQueue> protectedWorkQueue() { return m_workQueue; }
Ref<WorkQueue> m_workQueue;
std::unique_ptr<ContentExtensions::ContentExtensionsBackend> m_ruleList;
Vector<std::pair<ContentExtensions::ResourceLoadInfo, CompletionHandler<void(Eligibility)>>> m_pendingQueries;
WeakHashSet<ResourceMonitor> m_resourceMonitors;
size_t m_networkUsageThreshold { defaultNetworkUsageThreshold };
double m_networkUsageThresholdRandomness { defaultNetworkUsageThresholdRandomness };
bool m_ruleListIsPreparing { true };
};
} // namespace WebCore
#endif
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