Source/WebCore/loader/ResourceLoadObserver.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2016-2019 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 "ResourceLoadObserver.h"

 #include "DeprecatedGlobalSettings.h"
 #include "Document.h"
 #include "Frame.h"
 #include "FrameLoader.h"
 #include "FrameLoaderClient.h"
 #include "HTMLFrameOwnerElement.h"
 #include "Logging.h"
 #include "Page.h"
 #include "RegistrableDomain.h"
 #include "ResourceLoadStatistics.h"
 #include "ResourceRequest.h"
 #include "ResourceResponse.h"
 #include "RuntimeEnabledFeatures.h"
 #include "ScriptExecutionContext.h"
 #include "SecurityOrigin.h"
 #include "Settings.h"
 #include <wtf/URL.h>

 namespace WebCore {

 static const Seconds minimumNotificationInterval { 5_s };

 ResourceLoadObserver& ResourceLoadObserver::shared()
 {
     static NeverDestroyed<ResourceLoadObserver> resourceLoadObserver;
     return resourceLoadObserver;
 }

 void ResourceLoadObserver::setStatisticsUpdatedCallback(WTF::Function<void(Vector<ResourceLoadStatistics>&&)>&& notificationCallback)
 {
     ASSERT(!m_notificationCallback);
     m_notificationCallback = WTFMove(notificationCallback);
 }

 void ResourceLoadObserver::setRequestStorageAccessUnderOpenerCallback(WTF::Function<void(PAL::SessionID sessionID, const RegistrableDomain& domainInNeedOfStorageAccess, uint64_t openerPageID, const RegistrableDomain& openerDomain)>&& callback)
 {
     ASSERT(!m_requestStorageAccessUnderOpenerCallback);
     m_requestStorageAccessUnderOpenerCallback = WTFMove(callback);
 }

 void ResourceLoadObserver::setLogUserInteractionNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&)>&& callback)
 {
     ASSERT(!m_logUserInteractionNotificationCallback);
     m_logUserInteractionNotificationCallback = WTFMove(callback);
 }

 void ResourceLoadObserver::setLogWebSocketLoadingNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&, const RegistrableDomain&, WallTime)>&& callback)
 {
     ASSERT(!m_logWebSocketLoadingNotificationCallback);
     m_logWebSocketLoadingNotificationCallback = WTFMove(callback);
 }

 void ResourceLoadObserver::setLogSubresourceLoadingNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&, const RegistrableDomain&, WallTime)>&& callback)
 {
     ASSERT(!m_logSubresourceLoadingNotificationCallback);
     m_logSubresourceLoadingNotificationCallback = WTFMove(callback);
 }

 void ResourceLoadObserver::setLogSubresourceRedirectNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&, const RegistrableDomain&)>&& callback)
 {
     ASSERT(!m_logSubresourceRedirectNotificationCallback);
     m_logSubresourceRedirectNotificationCallback = WTFMove(callback);
 }

 static inline bool is3xxRedirect(const ResourceResponse& response)
 {
     return response.httpStatusCode() >= 300 && response.httpStatusCode() <= 399;
 }

 bool ResourceLoadObserver::shouldLog(bool usesEphemeralSession) const
 {
     return DeprecatedGlobalSettings::resourceLoadStatisticsEnabled() && !usesEphemeralSession && m_notificationCallback;
 }

 void ResourceLoadObserver::logSubresourceLoading(const Frame* frame, const ResourceRequest& newRequest, const ResourceResponse& redirectResponse)
 {
     ASSERT(frame->page());

     if (!frame)
         return;

     auto* page = frame->page();
     if (!page || !shouldLog(page->usesEphemeralSession()))
         return;

     bool isRedirect = is3xxRedirect(redirectResponse);
     const URL& redirectedFromURL = redirectResponse.url();
     const URL& targetURL = newRequest.url();
     const URL& topFrameURL = frame ? frame->mainFrame().document()->url() : URL();

     auto targetHost = targetURL.host();
     auto topFrameHost = topFrameURL.host();

     if (targetHost.isEmpty() || topFrameHost.isEmpty() || targetHost == topFrameHost || (isRedirect && targetHost == redirectedFromURL.host()))
         return;

     RegistrableDomain targetDomain { targetURL };
     RegistrableDomain topFrameDomain { topFrameURL };
     RegistrableDomain redirectedFromDomain { redirectedFromURL };

     if (targetDomain == topFrameDomain || (isRedirect && targetDomain == redirectedFromDomain))
         return;

     {
         auto& targetStatistics = ensureResourceStatisticsForRegistrableDomain(targetDomain);
         auto lastSeen = ResourceLoadStatistics::reduceTimeResolution(WallTime::now());
         targetStatistics.lastSeen = lastSeen;
         targetStatistics.subresourceUnderTopFrameDomains.add(topFrameDomain);

         m_logSubresourceLoadingNotificationCallback(page->sessionID(), targetDomain, topFrameDomain, lastSeen);
     }

     if (isRedirect) {
         auto& redirectingOriginStatistics = ensureResourceStatisticsForRegistrableDomain(redirectedFromDomain);
         redirectingOriginStatistics.subresourceUniqueRedirectsTo.add(targetDomain);
         auto& targetStatistics = ensureResourceStatisticsForRegistrableDomain(targetDomain);
         targetStatistics.subresourceUniqueRedirectsFrom.add(redirectedFromDomain);

         m_logSubresourceRedirectNotificationCallback(page->sessionID(), redirectedFromDomain, targetDomain);
     }
 }

 void ResourceLoadObserver::logWebSocketLoading(const URL& targetURL, const URL& mainFrameURL, PAL::SessionID sessionID)
 {
     if (!shouldLog(sessionID.isEphemeral()))
         return;

     auto targetHost = targetURL.host();
     auto mainFrameHost = mainFrameURL.host();

     if (targetHost.isEmpty() || mainFrameHost.isEmpty() || targetHost == mainFrameHost)
         return;

     RegistrableDomain targetDomain { targetURL };
     RegistrableDomain topFrameDomain { mainFrameURL };

     if (targetDomain == topFrameDomain)
         return;

     auto lastSeen = ResourceLoadStatistics::reduceTimeResolution(WallTime::now());

     auto& targetStatistics = ensureResourceStatisticsForRegistrableDomain(targetDomain);
     targetStatistics.lastSeen = lastSeen;
     targetStatistics.subresourceUnderTopFrameDomains.add(topFrameDomain);

     m_logWebSocketLoadingNotificationCallback(sessionID, targetDomain, topFrameDomain, lastSeen);
 }

 void ResourceLoadObserver::logUserInteractionWithReducedTimeResolution(const Document& document)
 {
     if (!document.sessionID().isValid() || !shouldLog(document.sessionID().isEphemeral()))
         return;

     auto& url = document.url();
     if (url.protocolIsAbout() || url.isLocalFile() || url.isEmpty())
         return;

     RegistrableDomain topFrameDomain { url };
     auto newTime = ResourceLoadStatistics::reduceTimeResolution(WallTime::now());
     auto lastReportedUserInteraction = m_lastReportedUserInteractionMap.get(topFrameDomain);
     if (newTime == lastReportedUserInteraction)
         return;

     m_lastReportedUserInteractionMap.set(topFrameDomain, newTime);

     auto& statistics = ensureResourceStatisticsForRegistrableDomain(topFrameDomain);
     statistics.hadUserInteraction = true;
     statistics.lastSeen = newTime;
     statistics.mostRecentUserInteractionTime = newTime;

 #if ENABLE(RESOURCE_LOAD_STATISTICS)
     if (auto* frame = document.frame()) {
         if (auto* opener = frame->loader().opener()) {
             if (auto* openerDocument = opener->document()) {
                 if (auto* openerFrame = openerDocument->frame()) {
                     if (auto openerPageID = openerFrame->loader().client().pageID())
                         requestStorageAccessUnderOpener(document.sessionID(), topFrameDomain, openerPageID.value(), *openerDocument);
                 }
             }
         }
     }

     m_logUserInteractionNotificationCallback(document.sessionID(), topFrameDomain);
 #endif

 #if ENABLE(RESOURCE_LOAD_STATISTICS) && !RELEASE_LOG_DISABLED
     if (shouldLogUserInteraction()) {
         auto counter = ++m_loggingCounter;
 #define LOCAL_LOG(str, ...) \
         RELEASE_LOG(ResourceLoadStatistics, "ResourceLoadObserver::logUserInteraction: counter = %" PRIu64 ": " str, counter, ##__VA_ARGS__)

         auto escapeForJSON = [](String s) {
             s.replace('\\', "\\\\").replace('"', "\\\"");
             return s;
         };
         auto escapedURL = escapeForJSON(url.string());
         auto escapedDomain = escapeForJSON(topFrameDomain.string());

         LOCAL_LOG(R"({ "url": "%{public}s",)", escapedURL.utf8().data());
         LOCAL_LOG(R"(  "domain" : "%{public}s",)", escapedDomain.utf8().data());
         LOCAL_LOG(R"(  "until" : %f })", newTime.secondsSinceEpoch().seconds());

 #undef LOCAL_LOG
     }
 #endif
 }

 #if ENABLE(RESOURCE_LOAD_STATISTICS)
 void ResourceLoadObserver::requestStorageAccessUnderOpener(PAL::SessionID sessionID, const RegistrableDomain& domainInNeedOfStorageAccess, uint64_t openerPageID, Document& openerDocument)
 {
     auto openerUrl = openerDocument.url();
     RegistrableDomain openerDomain { openerUrl };
     if (domainInNeedOfStorageAccess != openerDomain
         && !openerDocument.hasRequestedPageSpecificStorageAccessWithUserInteraction(domainInNeedOfStorageAccess)
         && !equalIgnoringASCIICase(openerUrl.string(), WTF::blankURL())) {
         m_requestStorageAccessUnderOpenerCallback(sessionID, domainInNeedOfStorageAccess, openerPageID, openerDomain);
         // Remember user interaction-based requests since they don't need to be repeated.
         openerDocument.setHasRequestedPageSpecificStorageAccessWithUserInteraction(domainInNeedOfStorageAccess);
     }
 }
 #endif

 void ResourceLoadObserver::logFontLoad(const Document& document, const String& familyName, bool loadStatus)
 {
 #if ENABLE(WEB_API_STATISTICS)
     if (!shouldLog(document.sessionID().isEphemeral()))
         return;
     RegistrableDomain registrableDomain { document.url() };
     auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
     bool shouldCallNotificationCallback = false;
     if (!loadStatus) {
         if (statistics.fontsFailedToLoad.add(familyName).isNewEntry)
             shouldCallNotificationCallback = true;
     } else {
         if (statistics.fontsSuccessfullyLoaded.add(familyName).isNewEntry)
             shouldCallNotificationCallback = true;
     }
     RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
     if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
         shouldCallNotificationCallback = true;
     if (shouldCallNotificationCallback)
         scheduleNotificationIfNeeded();
 #else
     UNUSED_PARAM(document);
     UNUSED_PARAM(familyName);
     UNUSED_PARAM(loadStatus);
 #endif
 }

 void ResourceLoadObserver::logCanvasRead(const Document& document)
 {
 #if ENABLE(WEB_API_STATISTICS)
     if (!shouldLog(document.sessionID().isEphemeral()))
         return;
     RegistrableDomain registrableDomain { document.url() };
     auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
     RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
     statistics.canvasActivityRecord.wasDataRead = true;
     if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
         scheduleNotificationIfNeeded();
 #else
     UNUSED_PARAM(document);
 #endif
 }

 void ResourceLoadObserver::logCanvasWriteOrMeasure(const Document& document, const String& textWritten)
 {
 #if ENABLE(WEB_API_STATISTICS)
     if (!shouldLog(document.sessionID().isEphemeral()))
         return;
     RegistrableDomain registrableDomain { document.url() };
     auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
     bool shouldCallNotificationCallback = false;
     RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
     if (statistics.canvasActivityRecord.recordWrittenOrMeasuredText(textWritten))
         shouldCallNotificationCallback = true;
     if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
         shouldCallNotificationCallback = true;
     if (shouldCallNotificationCallback)
         scheduleNotificationIfNeeded();
 #else
     UNUSED_PARAM(document);
     UNUSED_PARAM(textWritten);
 #endif
 }

 void ResourceLoadObserver::logNavigatorAPIAccessed(const Document& document, const ResourceLoadStatistics::NavigatorAPI functionName)
 {
 #if ENABLE(WEB_API_STATISTICS)
     if (!shouldLog(document.sessionID().isEphemeral()))
         return;
     RegistrableDomain registrableDomain { document.url() };
     auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
     bool shouldCallNotificationCallback = false;
     if (!statistics.navigatorFunctionsAccessed.contains(functionName)) {
         statistics.navigatorFunctionsAccessed.add(functionName);
         shouldCallNotificationCallback = true;
     }
     RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
     if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
         shouldCallNotificationCallback = true;
     if (shouldCallNotificationCallback)
         scheduleNotificationIfNeeded();
 #else
     UNUSED_PARAM(document);
     UNUSED_PARAM(functionName);
 #endif
 }

 void ResourceLoadObserver::logScreenAPIAccessed(const Document& document, const ResourceLoadStatistics::ScreenAPI functionName)
 {
 #if ENABLE(WEB_API_STATISTICS)
     if (!shouldLog(document.sessionID().isEphemeral()))
         return;
     RegistrableDomain registrableDomain { document.url() };
     auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
     bool shouldCallNotificationCallback = false;
     if (!statistics.screenFunctionsAccessed.contains(functionName)) {
         statistics.screenFunctionsAccessed.add(functionName);
         shouldCallNotificationCallback = true;
     }
     RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
     if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
         shouldCallNotificationCallback = true;
     if (shouldCallNotificationCallback)
         scheduleNotificationIfNeeded();
 #else
     UNUSED_PARAM(document);
     UNUSED_PARAM(functionName);
 #endif
 }

 ResourceLoadStatistics& ResourceLoadObserver::ensureResourceStatisticsForRegistrableDomain(const RegistrableDomain& domain)
 {
     auto addResult = m_resourceStatisticsMap.ensure(domain, [&domain] {
         return ResourceLoadStatistics(domain);
     });
     return addResult.iterator->value;
 }

 void ResourceLoadObserver::updateCentralStatisticsStore()
 {
     m_notificationCallback(takeStatistics());
 }

 String ResourceLoadObserver::statisticsForURL(const URL& url)
 {
     auto iter = m_resourceStatisticsMap.find(RegistrableDomain { url });
     if (iter == m_resourceStatisticsMap.end())
         return emptyString();

     return makeString("Statistics for ", url.host().toString(), ":\n", iter->value.toString());
 }

 Vector<ResourceLoadStatistics> ResourceLoadObserver::takeStatistics()
 {
     Vector<ResourceLoadStatistics> statistics;
     statistics.reserveInitialCapacity(m_resourceStatisticsMap.size());
     for (auto& statistic : m_resourceStatisticsMap.values())
         statistics.uncheckedAppend(WTFMove(statistic));

     m_resourceStatisticsMap.clear();

     return statistics;
 }

 void ResourceLoadObserver::clearState()
 {
     m_resourceStatisticsMap.clear();
     m_lastReportedUserInteractionMap.clear();
 }

 URL ResourceLoadObserver::nonNullOwnerURL(const Document& document) const
 {
     auto url = document.url();
     auto* frame = document.frame();
     auto host = document.url().host();

     while ((host.isNull() || host.isEmpty()) && frame && !frame->isMainFrame()) {
         auto* ownerElement = frame->ownerElement();

         ASSERT(ownerElement != nullptr);

         auto& doc = ownerElement->document();
         frame = doc.frame();
         url = doc.url();
         host = url.host();
     }

     return url;
 }

 } // namespace WebCore
	/*
	* Copyright (C) 2016-2019 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 "ResourceLoadObserver.h"

	#include "DeprecatedGlobalSettings.h"
	#include "Document.h"
	#include "Frame.h"
	#include "FrameLoader.h"
	#include "FrameLoaderClient.h"
	#include "HTMLFrameOwnerElement.h"
	#include "Logging.h"
	#include "Page.h"
	#include "RegistrableDomain.h"
	#include "ResourceLoadStatistics.h"
	#include "ResourceRequest.h"
	#include "ResourceResponse.h"
	#include "RuntimeEnabledFeatures.h"
	#include "ScriptExecutionContext.h"
	#include "SecurityOrigin.h"
	#include "Settings.h"
	#include <wtf/URL.h>

	namespace WebCore {

	static const Seconds minimumNotificationInterval { 5_s };

	ResourceLoadObserver& ResourceLoadObserver::shared()
	{
	static NeverDestroyed<ResourceLoadObserver> resourceLoadObserver;
	return resourceLoadObserver;
	}

	void ResourceLoadObserver::setStatisticsUpdatedCallback(WTF::Function<void(Vector<ResourceLoadStatistics>&&)>&& notificationCallback)
	{
	ASSERT(!m_notificationCallback);
	m_notificationCallback = WTFMove(notificationCallback);
	}

	void ResourceLoadObserver::setRequestStorageAccessUnderOpenerCallback(WTF::Function<void(PAL::SessionID sessionID, const RegistrableDomain& domainInNeedOfStorageAccess, uint64_t openerPageID, const RegistrableDomain& openerDomain)>&& callback)
	{
	ASSERT(!m_requestStorageAccessUnderOpenerCallback);
	m_requestStorageAccessUnderOpenerCallback = WTFMove(callback);
	}

	void ResourceLoadObserver::setLogUserInteractionNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&)>&& callback)
	{
	ASSERT(!m_logUserInteractionNotificationCallback);
	m_logUserInteractionNotificationCallback = WTFMove(callback);
	}

	void ResourceLoadObserver::setLogWebSocketLoadingNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&, const RegistrableDomain&, WallTime)>&& callback)
	{
	ASSERT(!m_logWebSocketLoadingNotificationCallback);
	m_logWebSocketLoadingNotificationCallback = WTFMove(callback);
	}

	void ResourceLoadObserver::setLogSubresourceLoadingNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&, const RegistrableDomain&, WallTime)>&& callback)
	{
	ASSERT(!m_logSubresourceLoadingNotificationCallback);
	m_logSubresourceLoadingNotificationCallback = WTFMove(callback);
	}

	void ResourceLoadObserver::setLogSubresourceRedirectNotificationCallback(Function<void(PAL::SessionID, const RegistrableDomain&, const RegistrableDomain&)>&& callback)
	{
	ASSERT(!m_logSubresourceRedirectNotificationCallback);
	m_logSubresourceRedirectNotificationCallback = WTFMove(callback);
	}

	static inline bool is3xxRedirect(const ResourceResponse& response)
	{
	return response.httpStatusCode() >= 300 && response.httpStatusCode() <= 399;
	}

	bool ResourceLoadObserver::shouldLog(bool usesEphemeralSession) const
	{
	return DeprecatedGlobalSettings::resourceLoadStatisticsEnabled() && !usesEphemeralSession && m_notificationCallback;
	}

	void ResourceLoadObserver::logSubresourceLoading(const Frame* frame, const ResourceRequest& newRequest, const ResourceResponse& redirectResponse)
	{
	ASSERT(frame->page());

	if (!frame)
	return;

	auto* page = frame->page();
	if (!page \|\| !shouldLog(page->usesEphemeralSession()))
	return;

	bool isRedirect = is3xxRedirect(redirectResponse);
	const URL& redirectedFromURL = redirectResponse.url();
	const URL& targetURL = newRequest.url();
	const URL& topFrameURL = frame ? frame->mainFrame().document()->url() : URL();

	auto targetHost = targetURL.host();
	auto topFrameHost = topFrameURL.host();

	if (targetHost.isEmpty() \|\| topFrameHost.isEmpty() \|\| targetHost == topFrameHost \|\| (isRedirect && targetHost == redirectedFromURL.host()))
	return;

	RegistrableDomain targetDomain { targetURL };
	RegistrableDomain topFrameDomain { topFrameURL };
	RegistrableDomain redirectedFromDomain { redirectedFromURL };

	if (targetDomain == topFrameDomain \|\| (isRedirect && targetDomain == redirectedFromDomain))
	return;

	{
	auto& targetStatistics = ensureResourceStatisticsForRegistrableDomain(targetDomain);
	auto lastSeen = ResourceLoadStatistics::reduceTimeResolution(WallTime::now());
	targetStatistics.lastSeen = lastSeen;
	targetStatistics.subresourceUnderTopFrameDomains.add(topFrameDomain);

	m_logSubresourceLoadingNotificationCallback(page->sessionID(), targetDomain, topFrameDomain, lastSeen);
	}

	if (isRedirect) {
	auto& redirectingOriginStatistics = ensureResourceStatisticsForRegistrableDomain(redirectedFromDomain);
	redirectingOriginStatistics.subresourceUniqueRedirectsTo.add(targetDomain);
	auto& targetStatistics = ensureResourceStatisticsForRegistrableDomain(targetDomain);
	targetStatistics.subresourceUniqueRedirectsFrom.add(redirectedFromDomain);

	m_logSubresourceRedirectNotificationCallback(page->sessionID(), redirectedFromDomain, targetDomain);
	}
	}

	void ResourceLoadObserver::logWebSocketLoading(const URL& targetURL, const URL& mainFrameURL, PAL::SessionID sessionID)
	{
	if (!shouldLog(sessionID.isEphemeral()))
	return;

	auto targetHost = targetURL.host();
	auto mainFrameHost = mainFrameURL.host();

	if (targetHost.isEmpty() \|\| mainFrameHost.isEmpty() \|\| targetHost == mainFrameHost)
	return;

	RegistrableDomain targetDomain { targetURL };
	RegistrableDomain topFrameDomain { mainFrameURL };

	if (targetDomain == topFrameDomain)
	return;

	auto lastSeen = ResourceLoadStatistics::reduceTimeResolution(WallTime::now());

	auto& targetStatistics = ensureResourceStatisticsForRegistrableDomain(targetDomain);
	targetStatistics.lastSeen = lastSeen;
	targetStatistics.subresourceUnderTopFrameDomains.add(topFrameDomain);

	m_logWebSocketLoadingNotificationCallback(sessionID, targetDomain, topFrameDomain, lastSeen);
	}

	void ResourceLoadObserver::logUserInteractionWithReducedTimeResolution(const Document& document)
	{
	if (!document.sessionID().isValid() \|\| !shouldLog(document.sessionID().isEphemeral()))
	return;

	auto& url = document.url();
	if (url.protocolIsAbout() \|\| url.isLocalFile() \|\| url.isEmpty())
	return;

	RegistrableDomain topFrameDomain { url };
	auto newTime = ResourceLoadStatistics::reduceTimeResolution(WallTime::now());
	auto lastReportedUserInteraction = m_lastReportedUserInteractionMap.get(topFrameDomain);
	if (newTime == lastReportedUserInteraction)
	return;

	m_lastReportedUserInteractionMap.set(topFrameDomain, newTime);

	auto& statistics = ensureResourceStatisticsForRegistrableDomain(topFrameDomain);
	statistics.hadUserInteraction = true;
	statistics.lastSeen = newTime;
	statistics.mostRecentUserInteractionTime = newTime;

	#if ENABLE(RESOURCE_LOAD_STATISTICS)
	if (auto* frame = document.frame()) {
	if (auto* opener = frame->loader().opener()) {
	if (auto* openerDocument = opener->document()) {
	if (auto* openerFrame = openerDocument->frame()) {
	if (auto openerPageID = openerFrame->loader().client().pageID())
	requestStorageAccessUnderOpener(document.sessionID(), topFrameDomain, openerPageID.value(), *openerDocument);
	}
	}
	}
	}

	m_logUserInteractionNotificationCallback(document.sessionID(), topFrameDomain);
	#endif

	#if ENABLE(RESOURCE_LOAD_STATISTICS) && !RELEASE_LOG_DISABLED
	if (shouldLogUserInteraction()) {
	auto counter = ++m_loggingCounter;
	#define LOCAL_LOG(str, ...) \
	RELEASE_LOG(ResourceLoadStatistics, "ResourceLoadObserver::logUserInteraction: counter = %" PRIu64 ": " str, counter, ##__VA_ARGS__)

	auto escapeForJSON = [](String s) {
	s.replace('\\', "\\\\").replace('"', "\\\"");
	return s;
	};
	auto escapedURL = escapeForJSON(url.string());
	auto escapedDomain = escapeForJSON(topFrameDomain.string());

	LOCAL_LOG(R"({ "url": "%{public}s",)", escapedURL.utf8().data());
	LOCAL_LOG(R"( "domain" : "%{public}s",)", escapedDomain.utf8().data());
	LOCAL_LOG(R"( "until" : %f })", newTime.secondsSinceEpoch().seconds());

	#undef LOCAL_LOG
	}
	#endif
	}

	#if ENABLE(RESOURCE_LOAD_STATISTICS)
	void ResourceLoadObserver::requestStorageAccessUnderOpener(PAL::SessionID sessionID, const RegistrableDomain& domainInNeedOfStorageAccess, uint64_t openerPageID, Document& openerDocument)
	{
	auto openerUrl = openerDocument.url();
	RegistrableDomain openerDomain { openerUrl };
	if (domainInNeedOfStorageAccess != openerDomain
	&& !openerDocument.hasRequestedPageSpecificStorageAccessWithUserInteraction(domainInNeedOfStorageAccess)
	&& !equalIgnoringASCIICase(openerUrl.string(), WTF::blankURL())) {
	m_requestStorageAccessUnderOpenerCallback(sessionID, domainInNeedOfStorageAccess, openerPageID, openerDomain);
	// Remember user interaction-based requests since they don't need to be repeated.
	openerDocument.setHasRequestedPageSpecificStorageAccessWithUserInteraction(domainInNeedOfStorageAccess);
	}
	}
	#endif

	void ResourceLoadObserver::logFontLoad(const Document& document, const String& familyName, bool loadStatus)
	{
	#if ENABLE(WEB_API_STATISTICS)
	if (!shouldLog(document.sessionID().isEphemeral()))
	return;
	RegistrableDomain registrableDomain { document.url() };
	auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
	bool shouldCallNotificationCallback = false;
	if (!loadStatus) {
	if (statistics.fontsFailedToLoad.add(familyName).isNewEntry)
	shouldCallNotificationCallback = true;
	} else {
	if (statistics.fontsSuccessfullyLoaded.add(familyName).isNewEntry)
	shouldCallNotificationCallback = true;
	}
	RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
	if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
	shouldCallNotificationCallback = true;
	if (shouldCallNotificationCallback)
	scheduleNotificationIfNeeded();
	#else
	UNUSED_PARAM(document);
	UNUSED_PARAM(familyName);
	UNUSED_PARAM(loadStatus);
	#endif
	}

	void ResourceLoadObserver::logCanvasRead(const Document& document)
	{
	#if ENABLE(WEB_API_STATISTICS)
	if (!shouldLog(document.sessionID().isEphemeral()))
	return;
	RegistrableDomain registrableDomain { document.url() };
	auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
	RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
	statistics.canvasActivityRecord.wasDataRead = true;
	if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
	scheduleNotificationIfNeeded();
	#else
	UNUSED_PARAM(document);
	#endif
	}

	void ResourceLoadObserver::logCanvasWriteOrMeasure(const Document& document, const String& textWritten)
	{
	#if ENABLE(WEB_API_STATISTICS)
	if (!shouldLog(document.sessionID().isEphemeral()))
	return;
	RegistrableDomain registrableDomain { document.url() };
	auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
	bool shouldCallNotificationCallback = false;
	RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
	if (statistics.canvasActivityRecord.recordWrittenOrMeasuredText(textWritten))
	shouldCallNotificationCallback = true;
	if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
	shouldCallNotificationCallback = true;
	if (shouldCallNotificationCallback)
	scheduleNotificationIfNeeded();
	#else
	UNUSED_PARAM(document);
	UNUSED_PARAM(textWritten);
	#endif
	}

	void ResourceLoadObserver::logNavigatorAPIAccessed(const Document& document, const ResourceLoadStatistics::NavigatorAPI functionName)
	{
	#if ENABLE(WEB_API_STATISTICS)
	if (!shouldLog(document.sessionID().isEphemeral()))
	return;
	RegistrableDomain registrableDomain { document.url() };
	auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
	bool shouldCallNotificationCallback = false;
	if (!statistics.navigatorFunctionsAccessed.contains(functionName)) {
	statistics.navigatorFunctionsAccessed.add(functionName);
	shouldCallNotificationCallback = true;
	}
	RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
	if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
	shouldCallNotificationCallback = true;
	if (shouldCallNotificationCallback)
	scheduleNotificationIfNeeded();
	#else
	UNUSED_PARAM(document);
	UNUSED_PARAM(functionName);
	#endif
	}

	void ResourceLoadObserver::logScreenAPIAccessed(const Document& document, const ResourceLoadStatistics::ScreenAPI functionName)
	{
	#if ENABLE(WEB_API_STATISTICS)
	if (!shouldLog(document.sessionID().isEphemeral()))
	return;
	RegistrableDomain registrableDomain { document.url() };
	auto& statistics = ensureResourceStatisticsForRegistrableDomain(registrableDomain);
	bool shouldCallNotificationCallback = false;
	if (!statistics.screenFunctionsAccessed.contains(functionName)) {
	statistics.screenFunctionsAccessed.add(functionName);
	shouldCallNotificationCallback = true;
	}
	RegistrableDomain mainFrameRegistrableDomain { document.topDocument().url() };
	if (statistics.topFrameRegistrableDomainsWhichAccessedWebAPIs.add(mainFrameRegistrableDomain.string()).isNewEntry)
	shouldCallNotificationCallback = true;
	if (shouldCallNotificationCallback)
	scheduleNotificationIfNeeded();
	#else
	UNUSED_PARAM(document);
	UNUSED_PARAM(functionName);
	#endif
	}

	ResourceLoadStatistics& ResourceLoadObserver::ensureResourceStatisticsForRegistrableDomain(const RegistrableDomain& domain)
	{
	auto addResult = m_resourceStatisticsMap.ensure(domain, [&domain] {
	return ResourceLoadStatistics(domain);
	});
	return addResult.iterator->value;
	}

	void ResourceLoadObserver::updateCentralStatisticsStore()
	{
	m_notificationCallback(takeStatistics());
	}

	String ResourceLoadObserver::statisticsForURL(const URL& url)
	{
	auto iter = m_resourceStatisticsMap.find(RegistrableDomain { url });
	if (iter == m_resourceStatisticsMap.end())
	return emptyString();

	return makeString("Statistics for ", url.host().toString(), ":\n", iter->value.toString());
	}

	Vector<ResourceLoadStatistics> ResourceLoadObserver::takeStatistics()
	{
	Vector<ResourceLoadStatistics> statistics;
	statistics.reserveInitialCapacity(m_resourceStatisticsMap.size());
	for (auto& statistic : m_resourceStatisticsMap.values())
	statistics.uncheckedAppend(WTFMove(statistic));

	m_resourceStatisticsMap.clear();

	return statistics;
	}

	void ResourceLoadObserver::clearState()
	{
	m_resourceStatisticsMap.clear();
	m_lastReportedUserInteractionMap.clear();
	}

	URL ResourceLoadObserver::nonNullOwnerURL(const Document& document) const
	{
	auto url = document.url();
	auto* frame = document.frame();
	auto host = document.url().host();

	while ((host.isNull() \|\| host.isEmpty()) && frame && !frame->isMainFrame()) {
	auto* ownerElement = frame->ownerElement();

	ASSERT(ownerElement != nullptr);

	auto& doc = ownerElement->document();
	frame = doc.frame();
	url = doc.url();
	host = url.host();
	}

	return url;
	}

	} // namespace WebCore