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/*
* Copyright (C) 2010 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 "UserGestureIndicator.h"
#include "Document.h"
#include "FrameDestructionObserverInlines.h"
#include "LocalDOMWindow.h"
#include "LocalFrame.h"
#include "ResourceLoadObserver.h"
#include "SecurityOrigin.h"
#include <wtf/MainThread.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
static RefPtr<UserGestureToken>& currentToken()
{
ASSERT(isMainThread());
static NeverDestroyed<RefPtr<UserGestureToken>> token;
return token;
}
UserGestureToken::UserGestureToken(ProcessingUserGestureState state, UserGestureType gestureType, Document* document, std::optional<WTF::UUID> authorizationToken)
: m_state(state)
, m_gestureType(gestureType)
, m_authorizationToken(authorizationToken)
{
if (!document || !processingUserGesture())
return;
// User gesture is valid for the document that received the user gesture, all of its ancestors
// as well as all same-origin documents on the page.
m_documentsImpactedByUserGesture.add(*document);
auto* documentFrame = document->frame();
if (!documentFrame)
return;
for (auto* ancestorFrame = documentFrame->tree().parent(); ancestorFrame; ancestorFrame = ancestorFrame->tree().parent()) {
auto* localAncestor = dynamicDowncast<LocalFrame>(ancestorFrame);
if (!localAncestor)
continue;
if (auto* ancestorDocument = localAncestor->document())
m_documentsImpactedByUserGesture.add(*ancestorDocument);
}
auto& documentOrigin = document->securityOrigin();
for (Frame* frame = &documentFrame->tree().top(); frame; frame = frame->tree().traverseNext()) {
auto* localFrame = dynamicDowncast<LocalFrame>(frame);
if (!localFrame)
continue;
auto* frameDocument = localFrame->document();
if (frameDocument && documentOrigin.isSameOriginDomain(frameDocument->securityOrigin()))
m_documentsImpactedByUserGesture.add(*frameDocument);
}
}
UserGestureToken::~UserGestureToken()
{
for (auto& observer : m_destructionObservers)
observer(*this);
}
static Seconds maxIntervalForUserGestureForwardingForFetch { 10 };
const Seconds& UserGestureToken::maximumIntervalForUserGestureForwardingForFetch()
{
return maxIntervalForUserGestureForwardingForFetch;
}
void UserGestureToken::setMaximumIntervalForUserGestureForwardingForFetchForTesting(Seconds value)
{
maxIntervalForUserGestureForwardingForFetch = WTFMove(value);
}
bool UserGestureToken::isValidForDocument(const Document& document) const
{
return m_documentsImpactedByUserGesture.contains(document);
}
void UserGestureToken::forEachImpactedDocument(Function<void(Document&)>&& function)
{
m_documentsImpactedByUserGesture.forEach(function);
}
UserGestureIndicator::UserGestureIndicator(std::optional<ProcessingUserGestureState> state, Document* document, UserGestureType gestureType, ProcessInteractionStyle processInteractionStyle, std::optional<WTF::UUID> authorizationToken)
: m_previousToken { currentToken() }
{
ASSERT(isMainThread());
if (state)
currentToken() = UserGestureToken::create(state.value(), gestureType, document, authorizationToken);
if (state && document && currentToken()->processingUserGesture()) {
document->updateLastHandledUserGestureTimestamp(currentToken()->startTime());
if (processInteractionStyle == ProcessInteractionStyle::Immediate)
ResourceLoadObserver::shared().logUserInteractionWithReducedTimeResolution(document->topDocument());
document->topDocument().setUserDidInteractWithPage(true);
if (auto* frame = document->frame()) {
if (!frame->hasHadUserInteraction()) {
for (Frame *ancestor = frame; ancestor; ancestor = ancestor->tree().parent()) {
auto* localAncestor = dynamicDowncast<LocalFrame>(ancestor);
if (!localAncestor)
continue;
localAncestor->setHasHadUserInteraction();
}
}
}
// https://html.spec.whatwg.org/multipage/interaction.html#user-activation-processing-model
// When a user interaction causes firing of an activation triggering input event in a Document...
// NOTE: Only activate the relevent DOMWindow when the gestureType is an ActivationTriggering one
auto* window = document->domWindow();
if (window && gestureType == UserGestureType::ActivationTriggering)
window->notifyActivated(currentToken()->startTime());
}
}
UserGestureIndicator::UserGestureIndicator(RefPtr<UserGestureToken> token, UserGestureToken::GestureScope scope, UserGestureToken::IsPropagatedFromFetch isPropagatedFromFetch)
{
// Silently ignore UserGestureIndicators on non main threads.
if (!isMainThread())
return;
// It is only safe to use currentToken() on the main thread.
m_previousToken = currentToken();
if (token) {
token->setScope(scope);
token->setIsPropagatedFromFetch(isPropagatedFromFetch);
currentToken() = token;
}
}
UserGestureIndicator::~UserGestureIndicator()
{
if (!isMainThread())
return;
if (auto token = currentToken()) {
token->resetDOMPasteAccess();
token->resetScope();
token->resetIsPropagatedFromFetch();
}
currentToken() = m_previousToken;
}
RefPtr<UserGestureToken> UserGestureIndicator::currentUserGesture()
{
if (!isMainThread())
return nullptr;
return currentToken();
}
bool UserGestureIndicator::processingUserGesture(const Document* document)
{
if (!isMainThread())
return false;
if (!currentToken() || !currentToken()->processingUserGesture())
return false;
return !document || currentToken()->isValidForDocument(*document);
}
bool UserGestureIndicator::processingUserGestureForMedia()
{
if (!isMainThread())
return false;
return currentToken() ? currentToken()->processingUserGestureForMedia() : false;
}
std::optional<WTF::UUID> UserGestureIndicator::authorizationToken() const
{
if (!isMainThread())
return std::nullopt;
return currentToken() ? currentToken()->authorizationToken() : std::nullopt;
}
}
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